The following changes since commit a97978bcc2d1f650c7d411428806e5b03082b8c7: Merge remote-tracking branch 'remotes/dg-gitlab/tags/ppc-for-6.1-20210603' into staging (2021-06-03 10:00:35 +0100) are available in the Git repository at: https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20210603 for you to fetch changes up to 1c861885894d840235954060050d240259f5340b: tests/unit/test-vmstate: Assert that dup() and mkstemp() succeed (2021-06-03 16:43:27 +0100) ---------------------------------------------------------------- target-arm queue: * Some not-yet-enabled preliminaries for M-profile MVE support * Consistently use "Cortex-Axx", not "Cortex Axx" in docs, comments * docs: Fix installation of man pages with Sphinx 4.x * Mark LDS{MIN,MAX} as signed operations * Fix missing syndrome value for DAIF and PAC check exceptions * Implement BFloat16 extensions * Refactoring of hvf accelerator code in preparation for aarch64 support * Fix some coverity nits in test code ---------------------------------------------------------------- Alexander Graf (12): hvf: Move assert_hvf_ok() into common directory hvf: Move vcpu thread functions into common directory hvf: Move cpu functions into common directory hvf: Move hvf internal definitions into common header hvf: Make hvf_set_phys_mem() static hvf: Remove use of hv_uvaddr_t and hv_gpaddr_t hvf: Split out common code on vcpu init and destroy hvf: Use cpu_synchronize_state() hvf: Make synchronize functions static hvf: Remove hvf-accel-ops.h hvf: Introduce hvf vcpu struct hvf: Simplify post reset/init/loadvm hooks Damien Goutte-Gattat (1): docs: Fix installation of man pages with Sphinx 4.x Jamie Iles (4): target/arm: fix missing exception class target/arm: fold do_raise_exception into raise_exception target/arm: use raise_exception_ra for MTE check failure target/arm: use raise_exception_ra for stack limit exception Peter Maydell (15): target/arm: Add isar feature check functions for MVE target/arm: Update feature checks for insns which are "MVE or FP" target/arm: Move fpsp/fpdp isar check into callers of do_vfp_2op_sp/dp target/arm: Add MVE check to VMOV_reg_sp and VMOV_reg_dp target/arm: Fix return values in fp_sysreg_checks() target/arm: Implement M-profile VPR register target/arm: Make FPSCR.LTPSIZE writable for MVE target/arm: Allow board models to specify initial NS VTOR arm: Consistently use "Cortex-Axx", not "Cortex Axx" tests/qtest/bios-tables-test: Check for dup2() failure tests/qtest/e1000e-test: Check qemu_recv() succeeded tests/qtest/hd-geo-test: Fix checks on mkstemp() return value tests/qtest/pflash-cfi02-test: Avoid potential integer overflow tests/qtest/tpm-tests: Remove unnecessary NULL checks tests/unit/test-vmstate: Assert that dup() and mkstemp() succeed Richard Henderson (13): target/arm: Mark LDS{MIN,MAX} as signed operations target/arm: Add isar_feature_{aa32, aa64, aa64_sve}_bf16 target/arm: Unify unallocated path in disas_fp_1src target/arm: Implement scalar float32 to bfloat16 conversion target/arm: Implement vector float32 to bfloat16 conversion softfpu: Add float_round_to_odd_inf target/arm: Implement bfloat16 dot product (vector) target/arm: Implement bfloat16 dot product (indexed) target/arm: Implement bfloat16 matrix multiply accumulate target/arm: Implement bfloat widening fma (vector) target/arm: Implement bfloat widening fma (indexed) linux-user/aarch64: Enable hwcap bits for bfloat16 target/arm: Enable BFloat16 extensions docs/conf.py | 1 + docs/system/arm/aspeed.rst | 4 +- docs/system/arm/nuvoton.rst | 6 +- docs/system/arm/sabrelite.rst | 2 +- include/fpu/softfloat-types.h | 4 +- include/hw/arm/allwinner-h3.h | 2 +- include/hw/arm/armv7m.h | 2 + include/hw/core/cpu.h | 3 +- include/sysemu/hvf_int.h | 58 +++++ target/arm/cpu.h | 48 +++- target/arm/helper-sve.h | 4 + target/arm/helper.h | 15 ++ target/i386/hvf/hvf-accel-ops.h | 23 -- target/i386/hvf/hvf-i386.h | 33 +-- target/i386/hvf/vmx.h | 24 +- target/i386/hvf/x86hvf.h | 2 - target/arm/neon-dp.decode | 1 + target/arm/neon-shared.decode | 11 + target/arm/sve.decode | 19 +- target/arm/vfp.decode | 2 + accel/hvf/hvf-accel-ops.c | 471 ++++++++++++++++++++++++++++++++++++++++ accel/hvf/hvf-all.c | 47 ++++ hw/arm/armv7m.c | 7 + hw/arm/aspeed.c | 6 +- hw/arm/mcimx6ul-evk.c | 2 +- hw/arm/mcimx7d-sabre.c | 2 +- hw/arm/npcm7xx_boards.c | 4 +- hw/arm/sabrelite.c | 2 +- hw/misc/npcm7xx_clk.c | 2 +- linux-user/elfload.c | 2 + target/arm/cpu.c | 13 ++ target/arm/cpu64.c | 3 + target/arm/cpu_tcg.c | 1 + target/arm/m_helper.c | 5 +- target/arm/machine.c | 20 ++ target/arm/mte_helper.c | 12 +- target/arm/op_helper.c | 32 ++- target/arm/sve_helper.c | 2 + target/arm/translate-a64.c | 155 +++++++++++-- target/arm/translate-neon.c | 91 ++++++++ target/arm/translate-sve.c | 112 ++++++++++ target/arm/translate-vfp.c | 164 ++++++++++---- target/arm/vec_helper.c | 140 +++++++++++- target/arm/vfp_helper.c | 21 +- target/i386/hvf/hvf-accel-ops.c | 146 ------------- target/i386/hvf/hvf.c | 464 +++++---------------------------------- target/i386/hvf/x86.c | 28 +-- target/i386/hvf/x86_descr.c | 26 +-- target/i386/hvf/x86_emu.c | 62 +++--- target/i386/hvf/x86_mmu.c | 4 +- target/i386/hvf/x86_task.c | 12 +- target/i386/hvf/x86hvf.c | 222 +++++++++---------- tests/qtest/bios-tables-test.c | 8 +- tests/qtest/e1000e-test.c | 3 +- tests/qtest/hd-geo-test.c | 4 +- tests/qtest/pflash-cfi02-test.c | 2 +- tests/qtest/tpm-tests.c | 12 +- tests/unit/test-vmstate.c | 5 +- fpu/softfloat-parts.c.inc | 6 +- MAINTAINERS | 8 + accel/hvf/meson.build | 7 + accel/meson.build | 1 + target/i386/hvf/meson.build | 1 - 63 files changed, 1666 insertions(+), 935 deletions(-) create mode 100644 include/sysemu/hvf_int.h delete mode 100644 target/i386/hvf/hvf-accel-ops.h create mode 100644 accel/hvf/hvf-accel-ops.c create mode 100644 accel/hvf/hvf-all.c delete mode 100644 target/i386/hvf/hvf-accel-ops.c create mode 100644 accel/hvf/meson.build Add the isar feature check functions we will need for v8.1M MVE: * a check for MVE present: this corresponds to the pseudocode's CheckDecodeFaults(ExtType_Mve) * a check for the optional floating-point part of MVE: this corresponds to CheckDecodeFaults(ExtType_MveFp) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-2-peter.maydell@linaro.org --- target/arm/cpu.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id) } } +static inline bool isar_feature_aa32_mve(const ARMISARegisters *id) +{ + /* + * Return true if MVE is supported (either integer or floating point). + * We must check for M-profile as the MVFR1 field means something + * else for A-profile. + */ + return isar_feature_aa32_mprofile(id) && + FIELD_EX32(id->mvfr1, MVFR1, MVE) > 0; +} + +static inline bool isar_feature_aa32_mve_fp(const ARMISARegisters *id) +{ + /* + * Return true if MVE is supported (either integer or floating point). + * We must check for M-profile as the MVFR1 field means something + * else for A-profile. + */ + return isar_feature_aa32_mprofile(id) && + FIELD_EX32(id->mvfr1, MVFR1, MVE) >= 2; +} + static inline bool isar_feature_aa32_vfp_simd(const ARMISARegisters *id) { /* -- 2.20.1 Some v8M instructions are present if either the floating point extension or MVE is implemented. Update our implementation of them to check for MVE as well as for FP. This is all the insns which use CheckDecodeFaults(ExtType_MveOrFp) or CheckDecodeFaults(ExtType_MveOrDpFp) in their pseudocode, which are essentially the loads and stores, moves and sysreg accesses, except for VMOV_reg_sp and VMOV_reg_dp, which we handle in subsequent patches because they need a refactor to provide a place to put the new MVE check. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-3-peter.maydell@linaro.org --- target/arm/translate-vfp.c | 48 +++++++++++++++++++++++--------------- 1 file changed, 29 insertions(+), 19 deletions(-) diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_to_gp(DisasContext *s, arg_VMOV_to_gp *a) /* VMOV scalar to general purpose register */ TCGv_i32 tmp; - /* SIZE == MO_32 is a VFP instruction; otherwise NEON. */ - if (a->size == MO_32 - ? !dc_isar_feature(aa32_fpsp_v2, s) - : !arm_dc_feature(s, ARM_FEATURE_NEON)) { - return false; + /* + * SIZE == MO_32 is a VFP instruction; otherwise NEON. MVE has + * all sizes, whether the CPU has fp or not. + */ + if (!dc_isar_feature(aa32_mve, s)) { + if (a->size == MO_32 + ? !dc_isar_feature(aa32_fpsp_v2, s) + : !arm_dc_feature(s, ARM_FEATURE_NEON)) { + return false; + } } /* UNDEF accesses to D16-D31 if they don't exist */ @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_from_gp(DisasContext *s, arg_VMOV_from_gp *a) /* VMOV general purpose register to scalar */ TCGv_i32 tmp; - /* SIZE == MO_32 is a VFP instruction; otherwise NEON. */ - if (a->size == MO_32 - ? !dc_isar_feature(aa32_fpsp_v2, s) - : !arm_dc_feature(s, ARM_FEATURE_NEON)) { - return false; + /* + * SIZE == MO_32 is a VFP instruction; otherwise NEON. MVE has + * all sizes, whether the CPU has fp or not. + */ + if (!dc_isar_feature(aa32_mve, s)) { + if (a->size == MO_32 + ? !dc_isar_feature(aa32_fpsp_v2, s) + : !arm_dc_feature(s, ARM_FEATURE_NEON)) { + return false; + } } /* UNDEF accesses to D16-D31 if they don't exist */ @@ -XXX,XX +XXX,XX @@ typedef enum FPSysRegCheckResult { static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) { - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return FPSysRegCheckFailed; } @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_single(DisasContext *s, arg_VMOV_single *a) { TCGv_i32 tmp; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_64_sp(DisasContext *s, arg_VMOV_64_sp *a) { TCGv_i32 tmp; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_64_dp(DisasContext *s, arg_VMOV_64_dp *a) * floating point register. Note that this does not require support * for double precision arithmetic. */ - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VLDR_VSTR_hp(DisasContext *s, arg_VLDR_VSTR_sp *a) uint32_t offset; TCGv_i32 addr, tmp; - if (!dc_isar_feature(aa32_fp16_arith, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VLDR_VSTR_sp(DisasContext *s, arg_VLDR_VSTR_sp *a) uint32_t offset; TCGv_i32 addr, tmp; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VLDR_VSTR_dp(DisasContext *s, arg_VLDR_VSTR_dp *a) TCGv_i64 tmp; /* Note that this does not require support for double arithmetic. */ - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VLDM_VSTM_sp(DisasContext *s, arg_VLDM_VSTM_sp *a) TCGv_i32 addr, tmp; int i, n; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool trans_VLDM_VSTM_dp(DisasContext *s, arg_VLDM_VSTM_dp *a) int i, n; /* Note that this does not require support for double arithmetic. */ - if (!dc_isar_feature(aa32_fpsp_v2, s)) { + if (!dc_isar_feature(aa32_fpsp_v2, s) && !dc_isar_feature(aa32_mve, s)) { return false; } -- 2.20.1 The do_vfp_2op_sp() and do_vfp_2op_dp() functions currently check whether floating point is supported via the aa32_fpdp_v2 and aa32_fpsp_v2 isar checks. For v8.1M MVE support, the VMOV_reg trans functions (but not any of the others) need to update this to also allow the insn if MVE is implemented. Move the check out of the do_ function and into its callsites (which are all implemented via the DO_VFP_2OP macro), so we have a place to change the check for the VMOV insns. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-4-peter.maydell@linaro.org --- target/arm/translate-vfp.c | 37 +++++++++++++++++++------------------ 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static bool do_vfp_2op_sp(DisasContext *s, VFPGen2OpSPFn *fn, int vd, int vm) int veclen = s->vec_len; TCGv_i32 f0, fd; - if (!dc_isar_feature(aa32_fpsp_v2, s)) { - return false; - } + /* Note that the caller must check the aa32_fpsp_v2 feature. */ if (!dc_isar_feature(aa32_fpshvec, s) && (veclen != 0 || s->vec_stride != 0)) { @@ -XXX,XX +XXX,XX @@ static bool do_vfp_2op_hp(DisasContext *s, VFPGen2OpSPFn *fn, int vd, int vm) */ TCGv_i32 f0; + /* Note that the caller must check the aa32_fp16_arith feature */ + if (!dc_isar_feature(aa32_fp16_arith, s)) { return false; } @@ -XXX,XX +XXX,XX @@ static bool do_vfp_2op_dp(DisasContext *s, VFPGen2OpDPFn *fn, int vd, int vm) int veclen = s->vec_len; TCGv_i64 f0, fd; - if (!dc_isar_feature(aa32_fpdp_v2, s)) { - return false; - } + /* Note that the caller must check the aa32_fpdp_v2 feature. */ /* UNDEF accesses to D16-D31 if they don't exist */ if (!dc_isar_feature(aa32_simd_r32, s) && ((vd | vm) & 0x10)) { @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_imm_dp(DisasContext *s, arg_VMOV_imm_dp *a) return true; } -#define DO_VFP_2OP(INSN, PREC, FN) \ +#define DO_VFP_2OP(INSN, PREC, FN, CHECK) \ static bool trans_##INSN##_##PREC(DisasContext *s, \ arg_##INSN##_##PREC *a) \ { \ + if (!dc_isar_feature(CHECK, s)) { \ + return false; \ + } \ return do_vfp_2op_##PREC(s, FN, a->vd, a->vm); \ } -DO_VFP_2OP(VMOV_reg, sp, tcg_gen_mov_i32) -DO_VFP_2OP(VMOV_reg, dp, tcg_gen_mov_i64) +DO_VFP_2OP(VMOV_reg, sp, tcg_gen_mov_i32, aa32_fpsp_v2) +DO_VFP_2OP(VMOV_reg, dp, tcg_gen_mov_i64, aa32_fpdp_v2) -DO_VFP_2OP(VABS, hp, gen_helper_vfp_absh) -DO_VFP_2OP(VABS, sp, gen_helper_vfp_abss) -DO_VFP_2OP(VABS, dp, gen_helper_vfp_absd) +DO_VFP_2OP(VABS, hp, gen_helper_vfp_absh, aa32_fp16_arith) +DO_VFP_2OP(VABS, sp, gen_helper_vfp_abss, aa32_fpsp_v2) +DO_VFP_2OP(VABS, dp, gen_helper_vfp_absd, aa32_fpdp_v2) -DO_VFP_2OP(VNEG, hp, gen_helper_vfp_negh) -DO_VFP_2OP(VNEG, sp, gen_helper_vfp_negs) -DO_VFP_2OP(VNEG, dp, gen_helper_vfp_negd) +DO_VFP_2OP(VNEG, hp, gen_helper_vfp_negh, aa32_fp16_arith) +DO_VFP_2OP(VNEG, sp, gen_helper_vfp_negs, aa32_fpsp_v2) +DO_VFP_2OP(VNEG, dp, gen_helper_vfp_negd, aa32_fpdp_v2) static void gen_VSQRT_hp(TCGv_i32 vd, TCGv_i32 vm) { @@ -XXX,XX +XXX,XX @@ static void gen_VSQRT_dp(TCGv_i64 vd, TCGv_i64 vm) gen_helper_vfp_sqrtd(vd, vm, cpu_env); } -DO_VFP_2OP(VSQRT, hp, gen_VSQRT_hp) -DO_VFP_2OP(VSQRT, sp, gen_VSQRT_sp) -DO_VFP_2OP(VSQRT, dp, gen_VSQRT_dp) +DO_VFP_2OP(VSQRT, hp, gen_VSQRT_hp, aa32_fp16_arith) +DO_VFP_2OP(VSQRT, sp, gen_VSQRT_sp, aa32_fpsp_v2) +DO_VFP_2OP(VSQRT, dp, gen_VSQRT_dp, aa32_fpdp_v2) static bool trans_VCMP_hp(DisasContext *s, arg_VCMP_sp *a) { -- 2.20.1 Split out the handling of VMOV_reg_sp and VMOV_reg_dp so that we can permit the insns if either FP or MVE are present. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-5-peter.maydell@linaro.org --- target/arm/translate-vfp.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static bool trans_VMOV_imm_dp(DisasContext *s, arg_VMOV_imm_dp *a) return do_vfp_2op_##PREC(s, FN, a->vd, a->vm); \ } -DO_VFP_2OP(VMOV_reg, sp, tcg_gen_mov_i32, aa32_fpsp_v2) -DO_VFP_2OP(VMOV_reg, dp, tcg_gen_mov_i64, aa32_fpdp_v2) +#define DO_VFP_VMOV(INSN, PREC, FN) \ + static bool trans_##INSN##_##PREC(DisasContext *s, \ + arg_##INSN##_##PREC *a) \ + { \ + if (!dc_isar_feature(aa32_fp##PREC##_v2, s) && \ + !dc_isar_feature(aa32_mve, s)) { \ + return false; \ + } \ + return do_vfp_2op_##PREC(s, FN, a->vd, a->vm); \ + } + +DO_VFP_VMOV(VMOV_reg, sp, tcg_gen_mov_i32) +DO_VFP_VMOV(VMOV_reg, dp, tcg_gen_mov_i64) DO_VFP_2OP(VABS, hp, gen_helper_vfp_absh, aa32_fp16_arith) DO_VFP_2OP(VABS, sp, gen_helper_vfp_abss, aa32_fpsp_v2) -- 2.20.1 The fp_sysreg_checks() function is supposed to be returning an FPSysRegCheckResult, which is an enum with three possible values. However, three places in the function "return false" (a hangover from a previous iteration of the design where the function just returned a bool). Make these return FPSysRegCheckFailed instead (for no functional change, since both false and FPSysRegCheckFailed are zero). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-6-peter.maydell@linaro.org --- target/arm/translate-vfp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) break; case ARM_VFP_FPSCR_NZCVQC: if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { - return false; + return FPSysRegCheckFailed; } break; case ARM_VFP_FPCXT_S: case ARM_VFP_FPCXT_NS: if (!arm_dc_feature(s, ARM_FEATURE_V8_1M)) { - return false; + return FPSysRegCheckFailed; } if (!s->v8m_secure) { - return false; + return FPSysRegCheckFailed; } break; default: -- 2.20.1 If MVE is implemented for an M-profile CPU then it has a VPR register, which tracks predication information. Implement the read and write handling of this register, and the migration of its state. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-7-peter.maydell@linaro.org --- target/arm/cpu.h | 6 ++++++ target/arm/machine.c | 19 +++++++++++++++++++ target/arm/translate-vfp.c | 38 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ typedef struct CPUARMState { uint32_t cpacr[M_REG_NUM_BANKS]; uint32_t nsacr; int ltpsize; + uint32_t vpr; } v7m; /* Information associated with an exception about to be taken: @@ -XXX,XX +XXX,XX @@ FIELD(V7M_FPCCR, ASPEN, 31, 1) R_V7M_FPCCR_UFRDY_MASK | \ R_V7M_FPCCR_ASPEN_MASK) +/* v7M VPR bits */ +FIELD(V7M_VPR, P0, 0, 16) +FIELD(V7M_VPR, MASK01, 16, 4) +FIELD(V7M_VPR, MASK23, 20, 4) + /* * System register ID fields. */ diff --git a/target/arm/machine.c b/target/arm/machine.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/machine.c +++ b/target/arm/machine.c @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_m_fp = { } }; +static bool mve_needed(void *opaque) +{ + ARMCPU *cpu = opaque; + + return cpu_isar_feature(aa32_mve, cpu); +} + +static const VMStateDescription vmstate_m_mve = { + .name = "cpu/m/mve", + .version_id = 1, + .minimum_version_id = 1, + .needed = mve_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT32(env.v7m.vpr, ARMCPU), + VMSTATE_END_OF_LIST() + }, +}; + static const VMStateDescription vmstate_m = { .name = "cpu/m", .version_id = 4, @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_m = { &vmstate_m_other_sp, &vmstate_m_v8m, &vmstate_m_fp, + &vmstate_m_mve, NULL } }; diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static FPSysRegCheckResult fp_sysreg_checks(DisasContext *s, int regno) return FPSysRegCheckFailed; } break; + case ARM_VFP_VPR: + case ARM_VFP_P0: + if (!dc_isar_feature(aa32_mve, s)) { + return FPSysRegCheckFailed; + } + break; default: return FPSysRegCheckFailed; } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_write(DisasContext *s, int regno, tcg_temp_free_i32(sfpa); break; } + case ARM_VFP_VPR: + /* Behaves as NOP if not privileged */ + if (IS_USER(s)) { + break; + } + tmp = loadfn(s, opaque); + store_cpu_field(tmp, v7m.vpr); + break; + case ARM_VFP_P0: + { + TCGv_i32 vpr; + tmp = loadfn(s, opaque); + vpr = load_cpu_field(v7m.vpr); + tcg_gen_deposit_i32(vpr, vpr, tmp, + R_V7M_VPR_P0_SHIFT, R_V7M_VPR_P0_LENGTH); + store_cpu_field(vpr, v7m.vpr); + tcg_temp_free_i32(tmp); + break; + } default: g_assert_not_reached(); } @@ -XXX,XX +XXX,XX @@ static bool gen_M_fp_sysreg_read(DisasContext *s, int regno, tcg_temp_free_i32(fpscr); break; } + case ARM_VFP_VPR: + /* Behaves as NOP if not privileged */ + if (IS_USER(s)) { + break; + } + tmp = load_cpu_field(v7m.vpr); + storefn(s, opaque, tmp); + break; + case ARM_VFP_P0: + tmp = load_cpu_field(v7m.vpr); + tcg_gen_extract_i32(tmp, tmp, R_V7M_VPR_P0_SHIFT, R_V7M_VPR_P0_LENGTH); + storefn(s, opaque, tmp); + break; default: g_assert_not_reached(); } -- 2.20.1 The M-profile FPSCR has an LTPSIZE field, but if MVE is not implemented it is read-only and always reads as 4; this is how QEMU currently handles it. Make the field writable when MVE is implemented. We can safely add the field to the MVE migration struct because currently no CPUs enable MVE and so the migration struct is never used. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-8-peter.maydell@linaro.org --- target/arm/cpu.h | 3 ++- target/arm/machine.c | 1 + target/arm/vfp_helper.c | 9 ++++++--- 3 files changed, 9 insertions(+), 4 deletions(-) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ typedef struct CPUARMState { uint32_t fpdscr[M_REG_NUM_BANKS]; uint32_t cpacr[M_REG_NUM_BANKS]; uint32_t nsacr; - int ltpsize; + uint32_t ltpsize; uint32_t vpr; } v7m; @@ -XXX,XX +XXX,XX @@ void vfp_set_fpscr(CPUARMState *env, uint32_t val); #define FPCR_LTPSIZE_SHIFT 16 /* LTPSIZE, M-profile only */ #define FPCR_LTPSIZE_MASK (7 << FPCR_LTPSIZE_SHIFT) +#define FPCR_LTPSIZE_LENGTH 3 #define FPCR_NZCV_MASK (FPCR_N | FPCR_Z | FPCR_C | FPCR_V) #define FPCR_NZCVQC_MASK (FPCR_NZCV_MASK | FPCR_QC) diff --git a/target/arm/machine.c b/target/arm/machine.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/machine.c +++ b/target/arm/machine.c @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_m_mve = { .needed = mve_needed, .fields = (VMStateField[]) { VMSTATE_UINT32(env.v7m.vpr, ARMCPU), + VMSTATE_UINT32(env.v7m.ltpsize, ARMCPU), VMSTATE_END_OF_LIST() }, }; diff --git a/target/arm/vfp_helper.c b/target/arm/vfp_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vfp_helper.c +++ b/target/arm/vfp_helper.c @@ -XXX,XX +XXX,XX @@ uint32_t vfp_get_fpscr(CPUARMState *env) void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) { + ARMCPU *cpu = env_archcpu(env); + /* When ARMv8.2-FP16 is not supported, FZ16 is RES0. */ - if (!cpu_isar_feature(any_fp16, env_archcpu(env))) { + if (!cpu_isar_feature(any_fp16, cpu)) { val &= ~FPCR_FZ16; } @@ -XXX,XX +XXX,XX @@ void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) * because in v7A no-short-vector-support cores still had to * allow Stride/Len to be written with the only effect that * some insns are required to UNDEF if the guest sets them. - * - * TODO: if M-profile MVE implemented, set LTPSIZE. */ env->vfp.vec_len = extract32(val, 16, 3); env->vfp.vec_stride = extract32(val, 20, 2); + } else if (cpu_isar_feature(aa32_mve, cpu)) { + env->v7m.ltpsize = extract32(val, FPCR_LTPSIZE_SHIFT, + FPCR_LTPSIZE_LENGTH); } if (arm_feature(env, ARM_FEATURE_NEON)) { -- 2.20.1 Currently we allow board models to specify the initial value of the Secure VTOR register, using an init-svtor property on the TYPE_ARMV7M object which is plumbed through to the CPU. Allow board models to also specify the initial value of the Non-secure VTOR via a similar init-nsvtor property. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210520152840.24453-10-peter.maydell@linaro.org --- include/hw/arm/armv7m.h | 2 ++ target/arm/cpu.h | 2 ++ hw/arm/armv7m.c | 7 +++++++ target/arm/cpu.c | 10 ++++++++++ 4 files changed, 21 insertions(+) diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/arm/armv7m.h +++ b/include/hw/arm/armv7m.h @@ -XXX,XX +XXX,XX @@ OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M) * devices will be automatically layered on top of this view.) * + Property "idau": IDAU interface (forwarded to CPU object) * + Property "init-svtor": secure VTOR reset value (forwarded to CPU object) + * + Property "init-nsvtor": non-secure VTOR reset value (forwarded to CPU object) * + Property "vfp": enable VFP (forwarded to CPU object) * + Property "dsp": enable DSP (forwarded to CPU object) * + Property "enable-bitband": expose bitbanded IO @@ -XXX,XX +XXX,XX @@ struct ARMv7MState { MemoryRegion *board_memory; Object *idau; uint32_t init_svtor; + uint32_t init_nsvtor; bool enable_bitband; bool start_powered_off; bool vfp; diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ struct ARMCPU { /* For v8M, initial value of the Secure VTOR */ uint32_t init_svtor; + /* For v8M, initial value of the Non-secure VTOR */ + uint32_t init_nsvtor; /* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or * QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type. diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/armv7m.c +++ b/hw/arm/armv7m.c @@ -XXX,XX +XXX,XX @@ static void armv7m_realize(DeviceState *dev, Error **errp) return; } } + if (object_property_find(OBJECT(s->cpu), "init-nsvtor")) { + if (!object_property_set_uint(OBJECT(s->cpu), "init-nsvtor", + s->init_nsvtor, errp)) { + return; + } + } if (object_property_find(OBJECT(s->cpu), "start-powered-off")) { if (!object_property_set_bool(OBJECT(s->cpu), "start-powered-off", s->start_powered_off, errp)) { @@ -XXX,XX +XXX,XX @@ static Property armv7m_properties[] = { MemoryRegion *), DEFINE_PROP_LINK("idau", ARMv7MState, idau, TYPE_IDAU_INTERFACE, Object *), DEFINE_PROP_UINT32("init-svtor", ARMv7MState, init_svtor, 0), + DEFINE_PROP_UINT32("init-nsvtor", ARMv7MState, init_nsvtor, 0), DEFINE_PROP_BOOL("enable-bitband", ARMv7MState, enable_bitband, false), DEFINE_PROP_BOOL("start-powered-off", ARMv7MState, start_powered_off, false), diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ static void arm_cpu_reset(DeviceState *dev) env->regs[14] = 0xffffffff; env->v7m.vecbase[M_REG_S] = cpu->init_svtor & 0xffffff80; + env->v7m.vecbase[M_REG_NS] = cpu->init_nsvtor & 0xffffff80; /* Load the initial SP and PC from offset 0 and 4 in the vector table */ vecbase = env->v7m.vecbase[env->v7m.secure]; @@ -XXX,XX +XXX,XX @@ void arm_cpu_post_init(Object *obj) &cpu->init_svtor, OBJ_PROP_FLAG_READWRITE); } + if (arm_feature(&cpu->env, ARM_FEATURE_M)) { + /* + * Initial value of the NS VTOR (for cores without the Security + * extension, this is the only VTOR) + */ + object_property_add_uint32_ptr(obj, "init-nsvtor", + &cpu->init_nsvtor, + OBJ_PROP_FLAG_READWRITE); + } qdev_property_add_static(DEVICE(obj), &arm_cpu_cfgend_property); -- 2.20.1 The official punctuation for Arm CPU names uses a hyphen, like "Cortex-A9". We mostly follow this, but in a few places usage without the hyphen has crept in. Fix those so we consistently use the same way of writing the CPU name. This commit was created with: git grep -z -l 'Cortex ' | xargs -0 sed -i 's/Cortex /Cortex-/' Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20210527095152.10968-1-peter.maydell@linaro.org --- docs/system/arm/aspeed.rst | 4 ++-- docs/system/arm/nuvoton.rst | 6 +++--- docs/system/arm/sabrelite.rst | 2 +- include/hw/arm/allwinner-h3.h | 2 +- hw/arm/aspeed.c | 6 +++--- hw/arm/mcimx6ul-evk.c | 2 +- hw/arm/mcimx7d-sabre.c | 2 +- hw/arm/npcm7xx_boards.c | 4 ++-- hw/arm/sabrelite.c | 2 +- hw/misc/npcm7xx_clk.c | 2 +- 10 files changed, 16 insertions(+), 16 deletions(-) diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst index XXXXXXX..XXXXXXX 100644 --- a/docs/system/arm/aspeed.rst +++ b/docs/system/arm/aspeed.rst @@ -XXX,XX +XXX,XX @@ The QEMU Aspeed machines model BMCs of various OpenPOWER systems and Aspeed evaluation boards. They are based on different releases of the Aspeed SoC : the AST2400 integrating an ARM926EJ-S CPU (400MHz), the AST2500 with an ARM1176JZS CPU (800MHz) and more recently the AST2600 -with dual cores ARM Cortex A7 CPUs (1.2GHz). +with dual cores ARM Cortex-A7 CPUs (1.2GHz). The SoC comes with RAM, Gigabit ethernet, USB, SD/MMC, USB, SPI, I2C, etc. @@ -XXX,XX +XXX,XX @@ AST2500 SoC based machines : AST2600 SoC based machines : -- ``ast2600-evb`` Aspeed AST2600 Evaluation board (Cortex A7) +- ``ast2600-evb`` Aspeed AST2600 Evaluation board (Cortex-A7) - ``tacoma-bmc`` OpenPOWER Witherspoon POWER9 AST2600 BMC Supported devices diff --git a/docs/system/arm/nuvoton.rst b/docs/system/arm/nuvoton.rst index XXXXXXX..XXXXXXX 100644 --- a/docs/system/arm/nuvoton.rst +++ b/docs/system/arm/nuvoton.rst @@ -XXX,XX +XXX,XX @@ Nuvoton iBMC boards (``npcm750-evb``, ``quanta-gsj``) The `Nuvoton iBMC`_ chips (NPCM7xx) are a family of ARM-based SoCs that are designed to be used as Baseboard Management Controllers (BMCs) in various -servers. They all feature one or two ARM Cortex A9 CPU cores, as well as an +servers. They all feature one or two ARM Cortex-A9 CPU cores, as well as an assortment of peripherals targeted for either Enterprise or Data Center / Hyperscale applications. The former is a superset of the latter, so NPCM750 has all the peripherals of NPCM730 and more. .. _Nuvoton iBMC: https://www.nuvoton.com/products/cloud-computing/ibmc/ -The NPCM750 SoC has two Cortex A9 cores and is targeted for the Enterprise +The NPCM750 SoC has two Cortex-A9 cores and is targeted for the Enterprise segment. The following machines are based on this chip : - ``npcm750-evb`` Nuvoton NPCM750 Evaluation board -The NPCM730 SoC has two Cortex A9 cores and is targeted for Data Center and +The NPCM730 SoC has two Cortex-A9 cores and is targeted for Data Center and Hyperscale applications. The following machines are based on this chip : - ``quanta-gsj`` Quanta GSJ server BMC diff --git a/docs/system/arm/sabrelite.rst b/docs/system/arm/sabrelite.rst index XXXXXXX..XXXXXXX 100644 --- a/docs/system/arm/sabrelite.rst +++ b/docs/system/arm/sabrelite.rst @@ -XXX,XX +XXX,XX @@ Supported devices The SABRE Lite machine supports the following devices: - * Up to 4 Cortex A9 cores + * Up to 4 Cortex-A9 cores * Generic Interrupt Controller * 1 Clock Controller Module * 1 System Reset Controller diff --git a/include/hw/arm/allwinner-h3.h b/include/hw/arm/allwinner-h3.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/arm/allwinner-h3.h +++ b/include/hw/arm/allwinner-h3.h @@ -XXX,XX +XXX,XX @@ */ /* - * The Allwinner H3 is a System on Chip containing four ARM Cortex A7 + * The Allwinner H3 is a System on Chip containing four ARM Cortex-A7 * processor cores. Features and specifications include DDR2/DDR3 memory, * SD/MMC storage cards, 10/100/1000Mbit Ethernet, USB 2.0, HDMI and * various I/O modules. diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -XXX,XX +XXX,XX @@ static void aspeed_machine_ast2600_evb_class_init(ObjectClass *oc, void *data) MachineClass *mc = MACHINE_CLASS(oc); AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); - mc->desc = "Aspeed AST2600 EVB (Cortex A7)"; + mc->desc = "Aspeed AST2600 EVB (Cortex-A7)"; amc->soc_name = "ast2600-a1"; amc->hw_strap1 = AST2600_EVB_HW_STRAP1; amc->hw_strap2 = AST2600_EVB_HW_STRAP2; @@ -XXX,XX +XXX,XX @@ static void aspeed_machine_tacoma_class_init(ObjectClass *oc, void *data) MachineClass *mc = MACHINE_CLASS(oc); AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); - mc->desc = "OpenPOWER Tacoma BMC (Cortex A7)"; + mc->desc = "OpenPOWER Tacoma BMC (Cortex-A7)"; amc->soc_name = "ast2600-a1"; amc->hw_strap1 = TACOMA_BMC_HW_STRAP1; amc->hw_strap2 = TACOMA_BMC_HW_STRAP2; @@ -XXX,XX +XXX,XX @@ static void aspeed_machine_rainier_class_init(ObjectClass *oc, void *data) MachineClass *mc = MACHINE_CLASS(oc); AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc); - mc->desc = "IBM Rainier BMC (Cortex A7)"; + mc->desc = "IBM Rainier BMC (Cortex-A7)"; amc->soc_name = "ast2600-a1"; amc->hw_strap1 = RAINIER_BMC_HW_STRAP1; amc->hw_strap2 = RAINIER_BMC_HW_STRAP2; diff --git a/hw/arm/mcimx6ul-evk.c b/hw/arm/mcimx6ul-evk.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/mcimx6ul-evk.c +++ b/hw/arm/mcimx6ul-evk.c @@ -XXX,XX +XXX,XX @@ static void mcimx6ul_evk_init(MachineState *machine) static void mcimx6ul_evk_machine_init(MachineClass *mc) { - mc->desc = "Freescale i.MX6UL Evaluation Kit (Cortex A7)"; + mc->desc = "Freescale i.MX6UL Evaluation Kit (Cortex-A7)"; mc->init = mcimx6ul_evk_init; mc->max_cpus = FSL_IMX6UL_NUM_CPUS; mc->default_ram_id = "mcimx6ul-evk.ram"; diff --git a/hw/arm/mcimx7d-sabre.c b/hw/arm/mcimx7d-sabre.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/mcimx7d-sabre.c +++ b/hw/arm/mcimx7d-sabre.c @@ -XXX,XX +XXX,XX @@ static void mcimx7d_sabre_init(MachineState *machine) static void mcimx7d_sabre_machine_init(MachineClass *mc) { - mc->desc = "Freescale i.MX7 DUAL SABRE (Cortex A7)"; + mc->desc = "Freescale i.MX7 DUAL SABRE (Cortex-A7)"; mc->init = mcimx7d_sabre_init; mc->max_cpus = FSL_IMX7_NUM_CPUS; mc->default_ram_id = "mcimx7d-sabre.ram"; diff --git a/hw/arm/npcm7xx_boards.c b/hw/arm/npcm7xx_boards.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/npcm7xx_boards.c +++ b/hw/arm/npcm7xx_boards.c @@ -XXX,XX +XXX,XX @@ static void npcm750_evb_machine_class_init(ObjectClass *oc, void *data) npcm7xx_set_soc_type(nmc, TYPE_NPCM750); - mc->desc = "Nuvoton NPCM750 Evaluation Board (Cortex A9)"; + mc->desc = "Nuvoton NPCM750 Evaluation Board (Cortex-A9)"; mc->init = npcm750_evb_init; mc->default_ram_size = 512 * MiB; }; @@ -XXX,XX +XXX,XX @@ static void gsj_machine_class_init(ObjectClass *oc, void *data) npcm7xx_set_soc_type(nmc, TYPE_NPCM730); - mc->desc = "Quanta GSJ (Cortex A9)"; + mc->desc = "Quanta GSJ (Cortex-A9)"; mc->init = quanta_gsj_init; mc->default_ram_size = 512 * MiB; }; diff --git a/hw/arm/sabrelite.c b/hw/arm/sabrelite.c index XXXXXXX..XXXXXXX 100644 --- a/hw/arm/sabrelite.c +++ b/hw/arm/sabrelite.c @@ -XXX,XX +XXX,XX @@ static void sabrelite_init(MachineState *machine) static void sabrelite_machine_init(MachineClass *mc) { - mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex A9)"; + mc->desc = "Freescale i.MX6 Quad SABRE Lite Board (Cortex-A9)"; mc->init = sabrelite_init; mc->max_cpus = FSL_IMX6_NUM_CPUS; mc->ignore_memory_transaction_failures = true; diff --git a/hw/misc/npcm7xx_clk.c b/hw/misc/npcm7xx_clk.c index XXXXXXX..XXXXXXX 100644 --- a/hw/misc/npcm7xx_clk.c +++ b/hw/misc/npcm7xx_clk.c @@ -XXX,XX +XXX,XX @@ #define NPCM7XX_CLOCK_REF_HZ (25000000) /* Register Field Definitions */ -#define NPCM7XX_CLK_WDRCR_CA9C BIT(0) /* Cortex A9 Cores */ +#define NPCM7XX_CLK_WDRCR_CA9C BIT(0) /* Cortex-A9 Cores */ #define PLLCON_LOKI BIT(31) #define PLLCON_LOKS BIT(30) -- 2.20.1 From: Damien Goutte-Gattat <dgouttegattat@incenp.org> The 4.x branch of Sphinx introduces a breaking change, as generated man pages are now written to subdirectories corresponding to the manual section they belong to. This results in `make install` erroring out when attempting to install the man pages, because they are not where it expects to find them. This patch restores the behavior of Sphinx 3.x regarding man pages. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/256 Signed-off-by: Damien Goutte-Gattat <dgouttegattat@incenp.org> Message-id: 20210503161422.15028-1-dgouttegattat@incenp.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- docs/conf.py | 1 + 1 file changed, 1 insertion(+) diff --git a/docs/conf.py b/docs/conf.py index XXXXXXX..XXXXXXX 100644 --- a/docs/conf.py +++ b/docs/conf.py @@ -XXX,XX +XXX,XX @@ ['Stefan Hajnoczi <stefanha@redhat.com>', 'Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>'], 1), ] +man_make_section_directory = False # -- Options for Texinfo output ------------------------------------------- -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> The operands to tcg_gen_atomic_fetch_s{min,max}_i64 must be signed, so that the inputs are properly extended. Zero extend the result afterward, as needed. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/364 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20210602020720.47679-1-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/translate-a64.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_ldst_atomic(DisasContext *s, uint32_t insn, int o3_opc = extract32(insn, 12, 4); bool r = extract32(insn, 22, 1); bool a = extract32(insn, 23, 1); - TCGv_i64 tcg_rs, clean_addr; + TCGv_i64 tcg_rs, tcg_rt, clean_addr; AtomicThreeOpFn *fn = NULL; + MemOp mop = s->be_data | size | MO_ALIGN; if (is_vector || !dc_isar_feature(aa64_atomics, s)) { unallocated_encoding(s); @@ -XXX,XX +XXX,XX @@ static void disas_ldst_atomic(DisasContext *s, uint32_t insn, break; case 004: /* LDSMAX */ fn = tcg_gen_atomic_fetch_smax_i64; + mop |= MO_SIGN; break; case 005: /* LDSMIN */ fn = tcg_gen_atomic_fetch_smin_i64; + mop |= MO_SIGN; break; case 006: /* LDUMAX */ fn = tcg_gen_atomic_fetch_umax_i64; @@ -XXX,XX +XXX,XX @@ static void disas_ldst_atomic(DisasContext *s, uint32_t insn, } tcg_rs = read_cpu_reg(s, rs, true); + tcg_rt = cpu_reg(s, rt); if (o3_opc == 1) { /* LDCLR */ tcg_gen_not_i64(tcg_rs, tcg_rs); @@ -XXX,XX +XXX,XX @@ static void disas_ldst_atomic(DisasContext *s, uint32_t insn, /* The tcg atomic primitives are all full barriers. Therefore we * can ignore the Acquire and Release bits of this instruction. */ - fn(cpu_reg(s, rt), clean_addr, tcg_rs, get_mem_index(s), - s->be_data | size | MO_ALIGN); + fn(tcg_rt, clean_addr, tcg_rs, get_mem_index(s), mop); + + if ((mop & MO_SIGN) && size != MO_64) { + tcg_gen_ext32u_i64(tcg_rt, tcg_rt); + } } /* -- 2.20.1 From: Jamie Iles <jamie@nuviainc.com> The DAIF and PAC checks used raise_exception_ra to raise an exception and unwind CPU state but raise_exception_ra is currently designed for handling data aborts as the syndrome is partially precomputed and encoded in the TB and then merged in merge_syn_data_abort when handling the data abort. Using raise_exception_ra for DAIF and PAC checks results in an empty syndrome being retrieved from data[2] in restore_state_to_opc and setting ESR to 0. This manifested as: kvm [571]: Unknown exception class: esr: 0x000000 – Unknown/Uncategorized when launching a KVM guest when the host qemu used a CPU supporting EL2+pointer authentication and enabling pointer authentication in the guest. Rework raise_exception_ra such that the state is restored before raising the exception so that the exception is not clobbered by restore_state_to_opc. Fixes: 0d43e1a2d29a ("target/arm: Add PAuth helpers") Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jamie Iles <jamie@nuviainc.com> [PMM: added comment] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/op_helper.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -XXX,XX +XXX,XX @@ void raise_exception(CPUARMState *env, uint32_t excp, void raise_exception_ra(CPUARMState *env, uint32_t excp, uint32_t syndrome, uint32_t target_el, uintptr_t ra) { - CPUState *cs = do_raise_exception(env, excp, syndrome, target_el); - cpu_loop_exit_restore(cs, ra); + CPUState *cs = env_cpu(env); + + /* + * restore_state_to_opc() will set env->exception.syndrome, so + * we must restore CPU state here before setting the syndrome + * the caller passed us, and cannot use cpu_loop_exit_restore(). + */ + cpu_restore_state(cs, ra, true); + raise_exception(env, excp, syndrome, target_el); } uint64_t HELPER(neon_tbl)(CPUARMState *env, uint32_t desc, -- 2.20.1 From: Jamie Iles <jamie@nuviainc.com> Now that there are no other users of do_raise_exception, fold it into raise_exception. Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jamie Iles <jamie@nuviainc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/op_helper.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -XXX,XX +XXX,XX @@ #define SIGNBIT (uint32_t)0x80000000 #define SIGNBIT64 ((uint64_t)1 << 63) -static CPUState *do_raise_exception(CPUARMState *env, uint32_t excp, - uint32_t syndrome, uint32_t target_el) +void raise_exception(CPUARMState *env, uint32_t excp, + uint32_t syndrome, uint32_t target_el) { CPUState *cs = env_cpu(env); @@ -XXX,XX +XXX,XX @@ static CPUState *do_raise_exception(CPUARMState *env, uint32_t excp, cs->exception_index = excp; env->exception.syndrome = syndrome; env->exception.target_el = target_el; - - return cs; -} - -void raise_exception(CPUARMState *env, uint32_t excp, - uint32_t syndrome, uint32_t target_el) -{ - CPUState *cs = do_raise_exception(env, excp, syndrome, target_el); cpu_loop_exit(cs); } -- 2.20.1 From: Jamie Iles <jamie@nuviainc.com> Now that raise_exception_ra restores the state before raising the exception we can use restore_exception_ra to perform the state restore + exception raising without clobbering the syndrome. Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jamie Iles <jamie@nuviainc.com> [PMM: Keep the one line of the comment that is still relevant] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/mte_helper.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/mte_helper.c +++ b/target/arm/mte_helper.c @@ -XXX,XX +XXX,XX @@ static void mte_check_fail(CPUARMState *env, uint32_t desc, switch (tcf) { case 1: - /* - * Tag check fail causes a synchronous exception. - * - * In restore_state_to_opc, we set the exception syndrome - * for the load or store operation. Unwind first so we - * may overwrite that with the syndrome for the tag check. - */ - cpu_restore_state(env_cpu(env), ra, true); + /* Tag check fail causes a synchronous exception. */ env->exception.vaddress = dirty_ptr; is_write = FIELD_EX32(desc, MTEDESC, WRITE); syn = syn_data_abort_no_iss(arm_current_el(env) != 0, 0, 0, 0, 0, is_write, 0x11); - raise_exception(env, EXCP_DATA_ABORT, syn, exception_target_el(env)); + raise_exception_ra(env, EXCP_DATA_ABORT, syn, + exception_target_el(env), ra); /* noreturn, but fall through to the assert anyway */ case 0: -- 2.20.1 From: Jamie Iles <jamie@nuviainc.com> The sequence cpu_restore_state() + raise_exception() is equivalent to raise_exception_ra(), so use that instead. (In this case we never cared about the syndrome value, because M-profile doesn't use the syndrome; the old code was just written unnecessarily awkwardly.) Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jamie Iles <jamie@nuviainc.com> [PMM: Retain edited version of comment; rewrite commit message] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/m_helper.c | 5 +---- target/arm/op_helper.c | 9 +++------ 2 files changed, 4 insertions(+), 10 deletions(-) diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/m_helper.c +++ b/target/arm/m_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(v7m_msr)(CPUARMState *env, uint32_t maskreg, uint32_t val) limit = is_psp ? env->v7m.psplim[false] : env->v7m.msplim[false]; if (val < limit) { - CPUState *cs = env_cpu(env); - - cpu_restore_state(cs, GETPC(), true); - raise_exception(env, EXCP_STKOF, 0, 1); + raise_exception_ra(env, EXCP_STKOF, 0, 1, GETPC()); } if (is_psp) { diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(v8m_stackcheck)(CPUARMState *env, uint32_t newvalue) * raising an exception if the limit is breached. */ if (newvalue < v7m_sp_limit(env)) { - CPUState *cs = env_cpu(env); - /* * Stack limit exceptions are a rare case, so rather than syncing - * PC/condbits before the call, we use cpu_restore_state() to - * get them right before raising the exception. + * PC/condbits before the call, we use raise_exception_ra() so + * that cpu_restore_state() will sort them out. */ - cpu_restore_state(cs, GETPC(), true); - raise_exception(env, EXCP_STKOF, 0, 1); + raise_exception_ra(env, EXCP_STKOF, 0, 1, GETPC()); } } -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> Note that the SVE BFLOAT16 support does not require SVE2, it is an independent extension. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa32_predinv(const ARMISARegisters *id) return FIELD_EX32(id->id_isar6, ID_ISAR6, SPECRES) != 0; } +static inline bool isar_feature_aa32_bf16(const ARMISARegisters *id) +{ + return FIELD_EX32(id->id_isar6, ID_ISAR6, BF16) != 0; +} + static inline bool isar_feature_aa32_i8mm(const ARMISARegisters *id) { return FIELD_EX32(id->id_isar6, ID_ISAR6, I8MM) != 0; @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa64_dcpodp(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, DPB) >= 2; } +static inline bool isar_feature_aa64_bf16(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, BF16) != 0; +} + static inline bool isar_feature_aa64_fp_simd(const ARMISARegisters *id) { /* We always set the AdvSIMD and FP fields identically. */ @@ -XXX,XX +XXX,XX @@ static inline bool isar_feature_aa64_sve2_bitperm(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, BITPERM) != 0; } +static inline bool isar_feature_aa64_sve_bf16(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, BFLOAT16) != 0; +} + static inline bool isar_feature_aa64_sve2_sha3(const ARMISARegisters *id) { return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, SHA3) != 0; -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/translate-a64.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) int rd = extract32(insn, 0, 5); if (mos) { - unallocated_encoding(s); - return; + goto do_unallocated; } switch (opcode) { @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) /* FCVT between half, single and double precision */ int dtype = extract32(opcode, 0, 2); if (type == 2 || dtype == type) { - unallocated_encoding(s); - return; + goto do_unallocated; } if (!fp_access_check(s)) { return; @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) case 0x10 ... 0x13: /* FRINT{32,64}{X,Z} */ if (type > 1 || !dc_isar_feature(aa64_frint, s)) { - unallocated_encoding(s); - return; + goto do_unallocated; } /* fall through */ case 0x0 ... 0x3: @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) break; case 3: if (!dc_isar_feature(aa64_fp16, s)) { - unallocated_encoding(s); - return; + goto do_unallocated; } if (!fp_access_check(s)) { @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) handle_fp_1src_half(s, opcode, rd, rn); break; default: - unallocated_encoding(s); + goto do_unallocated; } break; default: + do_unallocated: unallocated_encoding(s); break; } -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is the 64-bit BFCVT and the 32-bit VCVT{B,T}.BF16.F32. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-4-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 1 + target/arm/vfp.decode | 2 ++ target/arm/translate-a64.c | 19 +++++++++++++++++++ target/arm/translate-vfp.c | 24 ++++++++++++++++++++++++ target/arm/vfp_helper.c | 5 +++++ 5 files changed, 51 insertions(+) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_3(vfp_cmped, void, f64, f64, env) DEF_HELPER_2(vfp_fcvtds, f64, f32, env) DEF_HELPER_2(vfp_fcvtsd, f32, f64, env) +DEF_HELPER_FLAGS_2(bfcvt, TCG_CALL_NO_RWG, i32, f32, ptr) DEF_HELPER_2(vfp_uitoh, f16, i32, ptr) DEF_HELPER_2(vfp_uitos, f32, i32, ptr) diff --git a/target/arm/vfp.decode b/target/arm/vfp.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vfp.decode +++ b/target/arm/vfp.decode @@ -XXX,XX +XXX,XX @@ VCVT_f64_f16 ---- 1110 1.11 0010 .... 1011 t:1 1.0 .... \ # VCVTB and VCVTT to f16: Vd format is always vd_sp; # Vm format depends on size bit +VCVT_b16_f32 ---- 1110 1.11 0011 .... 1001 t:1 1.0 .... \ + vd=%vd_sp vm=%vm_sp VCVT_f16_f32 ---- 1110 1.11 0011 .... 1010 t:1 1.0 .... \ vd=%vd_sp vm=%vm_sp VCVT_f16_f64 ---- 1110 1.11 0011 .... 1011 t:1 1.0 .... \ diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void handle_fp_1src_single(DisasContext *s, int opcode, int rd, int rn) case 0x3: /* FSQRT */ gen_helper_vfp_sqrts(tcg_res, tcg_op, cpu_env); goto done; + case 0x6: /* BFCVT */ + gen_fpst = gen_helper_bfcvt; + break; case 0x8: /* FRINTN */ case 0x9: /* FRINTP */ case 0xa: /* FRINTM */ @@ -XXX,XX +XXX,XX @@ static void disas_fp_1src(DisasContext *s, uint32_t insn) } break; + case 0x6: + switch (type) { + case 1: /* BFCVT */ + if (!dc_isar_feature(aa64_bf16, s)) { + goto do_unallocated; + } + if (!fp_access_check(s)) { + return; + } + handle_fp_1src_single(s, opcode, rd, rn); + break; + default: + goto do_unallocated; + } + break; + default: do_unallocated: unallocated_encoding(s); diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -XXX,XX +XXX,XX @@ static bool trans_VCVT_f64_f16(DisasContext *s, arg_VCVT_f64_f16 *a) return true; } +static bool trans_VCVT_b16_f32(DisasContext *s, arg_VCVT_b16_f32 *a) +{ + TCGv_ptr fpst; + TCGv_i32 tmp; + + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + fpst = fpstatus_ptr(FPST_FPCR); + tmp = tcg_temp_new_i32(); + + vfp_load_reg32(tmp, a->vm); + gen_helper_bfcvt(tmp, tmp, fpst); + tcg_gen_st16_i32(tmp, cpu_env, vfp_f16_offset(a->vd, a->t)); + tcg_temp_free_ptr(fpst); + tcg_temp_free_i32(tmp); + return true; +} + static bool trans_VCVT_f16_f32(DisasContext *s, arg_VCVT_f16_f32 *a) { TCGv_ptr fpst; diff --git a/target/arm/vfp_helper.c b/target/arm/vfp_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vfp_helper.c +++ b/target/arm/vfp_helper.c @@ -XXX,XX +XXX,XX @@ float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env) return float64_to_float32(x, &env->vfp.fp_status); } +uint32_t HELPER(bfcvt)(float32 x, void *status) +{ + return float32_to_bfloat16(x, status); +} + /* * VFP3 fixed point conversion. The AArch32 versions of fix-to-float * must always round-to-nearest; the AArch64 ones honour the FPSCR -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFCVT{N,T} for both AArch64 AdvSIMD and SVE, and VCVT.BF16.F32 for AArch32 NEON. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper-sve.h | 4 ++++ target/arm/helper.h | 1 + target/arm/neon-dp.decode | 1 + target/arm/sve.decode | 2 ++ target/arm/sve_helper.c | 2 ++ target/arm/translate-a64.c | 17 ++++++++++++++ target/arm/translate-neon.c | 45 +++++++++++++++++++++++++++++++++++++ target/arm/translate-sve.c | 16 +++++++++++++ target/arm/vfp_helper.c | 7 ++++++ 9 files changed, 95 insertions(+) diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper-sve.h +++ b/target/arm/helper-sve.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(sve_fcvt_hd, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(sve_fcvt_sd, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(sve_bfcvt, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(sve_fcvtzs_hh, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(sve2_fcvtnt_sh, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(sve2_fcvtnt_ds, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(sve_bfcvtnt, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(sve2_fcvtlt_hs, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_3(vfp_cmped, void, f64, f64, env) DEF_HELPER_2(vfp_fcvtds, f64, f32, env) DEF_HELPER_2(vfp_fcvtsd, f32, f64, env) DEF_HELPER_FLAGS_2(bfcvt, TCG_CALL_NO_RWG, i32, f32, ptr) +DEF_HELPER_FLAGS_2(bfcvt_pair, TCG_CALL_NO_RWG, i32, i64, ptr) DEF_HELPER_2(vfp_uitoh, f16, i32, ptr) DEF_HELPER_2(vfp_uitos, f32, i32, ptr) diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-dp.decode +++ b/target/arm/neon-dp.decode @@ -XXX,XX +XXX,XX @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm VRINTZ 1111 001 11 . 11 .. 10 .... 0 1011 . . 0 .... @2misc VCVT_F16_F32 1111 001 11 . 11 .. 10 .... 0 1100 0 . 0 .... @2misc_q0 + VCVT_B16_F32 1111 001 11 . 11 .. 10 .... 0 1100 1 . 0 .... @2misc_q0 VRINTM 1111 001 11 . 11 .. 10 .... 0 1101 . . 0 .... @2misc diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ FNMLS_zpzzz 01100101 .. 1 ..... 111 ... ..... ..... @rdn_pg_rm_ra # SVE floating-point convert precision FCVT_sh 01100101 10 0010 00 101 ... ..... ..... @rd_pg_rn_e0 FCVT_hs 01100101 10 0010 01 101 ... ..... ..... @rd_pg_rn_e0 +BFCVT 01100101 10 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVT_dh 01100101 11 0010 00 101 ... ..... ..... @rd_pg_rn_e0 FCVT_hd 01100101 11 0010 01 101 ... ..... ..... @rd_pg_rn_e0 FCVT_ds 01100101 11 0010 10 101 ... ..... ..... @rd_pg_rn_e0 @@ -XXX,XX +XXX,XX @@ RAX1 01000101 00 1 ..... 11110 1 ..... ..... @rd_rn_rm_e0 FCVTXNT_ds 01100100 00 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVTX_ds 01100101 00 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVTNT_sh 01100100 10 0010 00 101 ... ..... ..... @rd_pg_rn_e0 +BFCVTNT 01100100 10 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVTLT_hs 01100100 10 0010 01 101 ... ..... ..... @rd_pg_rn_e0 FCVTNT_ds 01100100 11 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVTLT_sd 01100100 11 0010 11 101 ... ..... ..... @rd_pg_rn_e0 diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -XXX,XX +XXX,XX @@ static inline uint64_t vfp_float64_to_uint64_rtz(float64 f, float_status *s) DO_ZPZ_FP(sve_fcvt_sh, uint32_t, H1_4, sve_f32_to_f16) DO_ZPZ_FP(sve_fcvt_hs, uint32_t, H1_4, sve_f16_to_f32) +DO_ZPZ_FP(sve_bfcvt, uint32_t, H1_4, float32_to_bfloat16) DO_ZPZ_FP(sve_fcvt_dh, uint64_t, , sve_f64_to_f16) DO_ZPZ_FP(sve_fcvt_hd, uint64_t, , sve_f16_to_f64) DO_ZPZ_FP(sve_fcvt_ds, uint64_t, , float64_to_float32) @@ -XXX,XX +XXX,XX @@ void HELPER(NAME)(void *vd, void *vn, void *vg, void *status, uint32_t desc) \ } while (i != 0); \ } +DO_FCVTNT(sve_bfcvtnt, uint32_t, uint16_t, H1_4, H1_2, float32_to_bfloat16) DO_FCVTNT(sve2_fcvtnt_sh, uint32_t, uint16_t, H1_4, H1_2, sve_f32_to_f16) DO_FCVTNT(sve2_fcvtnt_ds, uint64_t, uint32_t, , H1_4, float64_to_float32) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void handle_2misc_narrow(DisasContext *s, bool scalar, tcg_temp_free_i32(ahp); } break; + case 0x36: /* BFCVTN, BFCVTN2 */ + { + TCGv_ptr fpst = fpstatus_ptr(FPST_FPCR); + gen_helper_bfcvt_pair(tcg_res[pass], tcg_op, fpst); + tcg_temp_free_ptr(fpst); + } + break; case 0x56: /* FCVTXN, FCVTXN2 */ /* 64 bit to 32 bit float conversion * with von Neumann rounding (round to odd) @@ -XXX,XX +XXX,XX @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) } handle_2misc_narrow(s, false, opcode, 0, is_q, size - 1, rn, rd); return; + case 0x36: /* BFCVTN, BFCVTN2 */ + if (!dc_isar_feature(aa64_bf16, s) || size != 2) { + unallocated_encoding(s); + return; + } + if (!fp_access_check(s)) { + return; + } + handle_2misc_narrow(s, false, opcode, 0, is_q, size - 1, rn, rd); + return; case 0x17: /* FCVTL, FCVTL2 */ if (!fp_access_check(s)) { return; diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VSHLL(DisasContext *s, arg_2misc *a) return true; } +static bool trans_VCVT_B16_F32(DisasContext *s, arg_2misc *a) +{ + TCGv_ptr fpst; + TCGv_i64 tmp; + TCGv_i32 dst0, dst1; + + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + + /* UNDEF accesses to D16-D31 if they don't exist. */ + if (!dc_isar_feature(aa32_simd_r32, s) && + ((a->vd | a->vm) & 0x10)) { + return false; + } + + if ((a->vm & 1) || (a->size != 1)) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + fpst = fpstatus_ptr(FPST_STD); + tmp = tcg_temp_new_i64(); + dst0 = tcg_temp_new_i32(); + dst1 = tcg_temp_new_i32(); + + read_neon_element64(tmp, a->vm, 0, MO_64); + gen_helper_bfcvt_pair(dst0, tmp, fpst); + + read_neon_element64(tmp, a->vm, 1, MO_64); + gen_helper_bfcvt_pair(dst1, tmp, fpst); + + write_neon_element32(dst0, a->vd, 0, MO_32); + write_neon_element32(dst1, a->vd, 1, MO_32); + + tcg_temp_free_i64(tmp); + tcg_temp_free_i32(dst0); + tcg_temp_free_i32(dst1); + tcg_temp_free_ptr(fpst); + return true; +} + static bool trans_VCVT_F16_F32(DisasContext *s, arg_2misc *a) { TCGv_ptr fpst; diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_FCVT_hs(DisasContext *s, arg_rpr_esz *a) return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_hs); } +static bool trans_BFCVT(DisasContext *s, arg_rpr_esz *a) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_bfcvt); +} + static bool trans_FCVT_dh(DisasContext *s, arg_rpr_esz *a) { return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_dh); @@ -XXX,XX +XXX,XX @@ static bool trans_FCVTNT_sh(DisasContext *s, arg_rpr_esz *a) return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve2_fcvtnt_sh); } +static bool trans_BFCVTNT(DisasContext *s, arg_rpr_esz *a) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_bfcvtnt); +} + static bool trans_FCVTNT_ds(DisasContext *s, arg_rpr_esz *a) { if (!dc_isar_feature(aa64_sve2, s)) { diff --git a/target/arm/vfp_helper.c b/target/arm/vfp_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vfp_helper.c +++ b/target/arm/vfp_helper.c @@ -XXX,XX +XXX,XX @@ uint32_t HELPER(bfcvt)(float32 x, void *status) return float32_to_bfloat16(x, status); } +uint32_t HELPER(bfcvt_pair)(uint64_t pair, void *status) +{ + bfloat16 lo = float32_to_bfloat16(extract64(pair, 0, 32), status); + bfloat16 hi = float32_to_bfloat16(extract64(pair, 32, 32), status); + return deposit32(lo, 16, 16, hi); +} + /* * VFP3 fixed point conversion. The AArch32 versions of fix-to-float * must always round-to-nearest; the AArch64 ones honour the FPSCR -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> For Arm BFDOT and BFMMLA, we need a version of round-to-odd that overflows to infinity, instead of the max normal number. Cc: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-6-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/fpu/softfloat-types.h | 4 +++- fpu/softfloat-parts.c.inc | 6 ++++-- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -XXX,XX +XXX,XX @@ typedef enum __attribute__((__packed__)) { float_round_up = 2, float_round_to_zero = 3, float_round_ties_away = 4, - /* Not an IEEE rounding mode: round to the closest odd mantissa value */ + /* Not an IEEE rounding mode: round to closest odd, overflow to max */ float_round_to_odd = 5, + /* Not an IEEE rounding mode: round to closest odd, overflow to inf */ + float_round_to_odd_inf = 6, } FloatRoundMode; /* diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static void partsN(uncanon)(FloatPartsN *p, float_status *s, g_assert_not_reached(); } + overflow_norm = false; switch (s->float_rounding_mode) { case float_round_nearest_even: - overflow_norm = false; inc = ((p->frac_lo & roundeven_mask) != frac_lsbm1 ? frac_lsbm1 : 0); break; case float_round_ties_away: - overflow_norm = false; inc = frac_lsbm1; break; case float_round_to_zero: @@ -XXX,XX +XXX,XX @@ static void partsN(uncanon)(FloatPartsN *p, float_status *s, break; case float_round_to_odd: overflow_norm = true; + /* fall through */ + case float_round_to_odd_inf: inc = p->frac_lo & frac_lsb ? 0 : round_mask; break; default: @@ -XXX,XX +XXX,XX @@ static void partsN(uncanon)(FloatPartsN *p, float_status *s, ? frac_lsbm1 : 0); break; case float_round_to_odd: + case float_round_to_odd_inf: inc = p->frac_lo & frac_lsb ? 0 : round_mask; break; default: -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFDOT for both AArch64 AdvSIMD and SVE, and VDOT.BF16 for AArch32 NEON. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-7-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 3 +++ target/arm/neon-shared.decode | 2 ++ target/arm/sve.decode | 3 +++ target/arm/translate-a64.c | 20 ++++++++++++++++++ target/arm/translate-neon.c | 9 ++++++++ target/arm/translate-sve.c | 12 +++++++++++ target/arm/vec_helper.c | 40 +++++++++++++++++++++++++++++++++++ 7 files changed, 89 insertions(+) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(gvec_ummla_b, TCG_CALL_NO_RWG, DEF_HELPER_FLAGS_5(gvec_usmmla_b, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(gvec_bfdot, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, i32) + #ifdef TARGET_AARCH64 #include "helper-a64.h" #include "helper-sve.h" diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -XXX,XX +XXX,XX @@ VUDOT 1111 110 00 . 10 .... .... 1101 . q:1 . 1 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp VUSDOT 1111 110 01 . 10 .... .... 1101 . q:1 . 0 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp +VDOT_b16 1111 110 00 . 00 .... .... 1101 . q:1 . 0 .... \ + vm=%vm_dp vn=%vn_dp vd=%vd_dp # VFM[AS]L VFML 1111 110 0 s:1 . 10 .... .... 1000 . 0 . 1 .... \ diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ FMLALT_zzzw 01100100 10 1 ..... 10 0 00 1 ..... ..... @rda_rn_rm_e0 FMLSLB_zzzw 01100100 10 1 ..... 10 1 00 0 ..... ..... @rda_rn_rm_e0 FMLSLT_zzzw 01100100 10 1 ..... 10 1 00 1 ..... ..... @rda_rn_rm_e0 +### SVE2 floating-point bfloat16 dot-product +BFDOT_zzzz 01100100 01 1 ..... 10 0 00 0 ..... ..... @rda_rn_rm_e0 + ### SVE2 floating-point multiply-add long (indexed) FMLALB_zzxw 01100100 10 1 ..... 0100.0 ..... ..... @rrxr_3a esz=2 FMLALT_zzxw 01100100 10 1 ..... 0100.1 ..... ..... @rrxr_3a esz=2 diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) } feature = dc_isar_feature(aa64_fcma, s); break; + case 0x1f: /* BFDOT */ + switch (size) { + case 1: + feature = dc_isar_feature(aa64_bf16, s); + break; + default: + unallocated_encoding(s); + return; + } + break; default: unallocated_encoding(s); return; @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) } return; + case 0xf: /* BFDOT */ + switch (size) { + case 1: + gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfdot); + break; + default: + g_assert_not_reached(); + } + return; + default: g_assert_not_reached(); } diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VUSDOT(DisasContext *s, arg_VUSDOT *a) gen_helper_gvec_usdot_b); } +static bool trans_VDOT_b16(DisasContext *s, arg_VDOT_b16 *a) +{ + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + return do_neon_ddda(s, a->q * 7, a->vd, a->vn, a->vm, 0, + gen_helper_gvec_bfdot); +} + static bool trans_VFML(DisasContext *s, arg_VFML *a) { int opr_sz; diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_UMMLA(DisasContext *s, arg_rrrr_esz *a) { return do_i8mm_zzzz_ool(s, a, gen_helper_gvec_ummla_b, 0); } + +static bool trans_BFDOT_zzzz(DisasContext *s, arg_rrrr_esz *a) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + if (sve_access_check(s)) { + gen_gvec_ool_zzzz(s, gen_helper_gvec_bfdot, + a->rd, a->rn, a->rm, a->ra, 0); + } + return true; +} diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -XXX,XX +XXX,XX @@ static void do_mmla_b(void *vd, void *vn, void *vm, void *va, uint32_t desc, DO_MMLA_B(gvec_smmla_b, do_smmla_b) DO_MMLA_B(gvec_ummla_b, do_ummla_b) DO_MMLA_B(gvec_usmmla_b, do_usmmla_b) + +/* + * BFloat16 Dot Product + */ + +static float32 bfdotadd(float32 sum, uint32_t e1, uint32_t e2) +{ + /* FPCR is ignored for BFDOT and BFMMLA. */ + float_status bf_status = { + .tininess_before_rounding = float_tininess_before_rounding, + .float_rounding_mode = float_round_to_odd_inf, + .flush_to_zero = true, + .flush_inputs_to_zero = true, + .default_nan_mode = true, + }; + float32 t1, t2; + + /* + * Extract each BFloat16 from the element pair, and shift + * them such that they become float32. + */ + t1 = float32_mul(e1 << 16, e2 << 16, &bf_status); + t2 = float32_mul(e1 & 0xffff0000u, e2 & 0xffff0000u, &bf_status); + t1 = float32_add(t1, t2, &bf_status); + t1 = float32_add(sum, t1, &bf_status); + + return t1; +} + +void HELPER(gvec_bfdot)(void *vd, void *vn, void *vm, void *va, uint32_t desc) +{ + intptr_t i, opr_sz = simd_oprsz(desc); + float32 *d = vd, *a = va; + uint32_t *n = vn, *m = vm; + + for (i = 0; i < opr_sz / 4; ++i) { + d[i] = bfdotadd(a[i], n[i], m[i]); + } + clear_tail(d, opr_sz, simd_maxsz(desc)); +} -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFDOT for both AArch64 AdvSIMD and SVE, and VDOT.BF16 for AArch32 NEON. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-8-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 2 ++ target/arm/neon-shared.decode | 2 ++ target/arm/sve.decode | 3 +++ target/arm/translate-a64.c | 41 +++++++++++++++++++++++++++-------- target/arm/translate-neon.c | 9 ++++++++ target/arm/translate-sve.c | 12 ++++++++++ target/arm/vec_helper.c | 20 +++++++++++++++++ 7 files changed, 80 insertions(+), 9 deletions(-) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(gvec_usmmla_b, TCG_CALL_NO_RWG, DEF_HELPER_FLAGS_5(gvec_bfdot, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(gvec_bfdot_idx, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, i32) #ifdef TARGET_AARCH64 #include "helper-a64.h" diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -XXX,XX +XXX,XX @@ VUSDOT_scalar 1111 1110 1 . 00 .... .... 1101 . q:1 index:1 0 vm:4 \ vn=%vn_dp vd=%vd_dp VSUDOT_scalar 1111 1110 1 . 00 .... .... 1101 . q:1 index:1 1 vm:4 \ vn=%vn_dp vd=%vd_dp +VDOT_b16_scal 1111 1110 0 . 00 .... .... 1101 . q:1 index:1 0 vm:4 \ + vn=%vn_dp vd=%vd_dp %vfml_scalar_q0_rm 0:3 5:1 %vfml_scalar_q1_index 5:1 3:1 diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ FMLALB_zzxw 01100100 10 1 ..... 0100.0 ..... ..... @rrxr_3a esz=2 FMLALT_zzxw 01100100 10 1 ..... 0100.1 ..... ..... @rrxr_3a esz=2 FMLSLB_zzxw 01100100 10 1 ..... 0110.0 ..... ..... @rrxr_3a esz=2 FMLSLT_zzxw 01100100 10 1 ..... 0110.1 ..... ..... @rrxr_3a esz=2 + +### SVE2 floating-point bfloat16 dot-product (indexed) +BFDOT_zzxz 01100100 01 1 ..... 010000 ..... ..... @rrxr_2 esz=2 diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn) return; } break; - case 0x0f: /* SUDOT, USDOT */ - if (is_scalar || (size & 1) || !dc_isar_feature(aa64_i8mm, s)) { + case 0x0f: + switch (size) { + case 0: /* SUDOT */ + case 2: /* USDOT */ + if (is_scalar || !dc_isar_feature(aa64_i8mm, s)) { + unallocated_encoding(s); + return; + } + break; + case 1: /* BFDOT */ + if (is_scalar || !dc_isar_feature(aa64_bf16, s)) { + unallocated_encoding(s); + return; + } + break; + default: unallocated_encoding(s); return; } @@ -XXX,XX +XXX,XX @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn) u ? gen_helper_gvec_udot_idx_b : gen_helper_gvec_sdot_idx_b); return; - case 0x0f: /* SUDOT, USDOT */ - gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, index, - extract32(insn, 23, 1) - ? gen_helper_gvec_usdot_idx_b - : gen_helper_gvec_sudot_idx_b); - return; - + case 0x0f: + switch (extract32(insn, 22, 2)) { + case 0: /* SUDOT */ + gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, index, + gen_helper_gvec_sudot_idx_b); + return; + case 1: /* BFDOT */ + gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, index, + gen_helper_gvec_bfdot_idx); + return; + case 2: /* USDOT */ + gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, index, + gen_helper_gvec_usdot_idx_b); + return; + } + g_assert_not_reached(); case 0x11: /* FCMLA #0 */ case 0x13: /* FCMLA #90 */ case 0x15: /* FCMLA #180 */ diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VSUDOT_scalar(DisasContext *s, arg_VSUDOT_scalar *a) gen_helper_gvec_sudot_idx_b); } +static bool trans_VDOT_b16_scal(DisasContext *s, arg_VDOT_b16_scal *a) +{ + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + return do_neon_ddda(s, a->q * 6, a->vd, a->vn, a->vm, a->index, + gen_helper_gvec_bfdot_idx); +} + static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a) { int opr_sz; diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_BFDOT_zzzz(DisasContext *s, arg_rrrr_esz *a) } return true; } + +static bool trans_BFDOT_zzxz(DisasContext *s, arg_rrxr_esz *a) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + if (sve_access_check(s)) { + gen_gvec_ool_zzzz(s, gen_helper_gvec_bfdot_idx, + a->rd, a->rn, a->rm, a->ra, a->index); + } + return true; +} diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(gvec_bfdot)(void *vd, void *vn, void *vm, void *va, uint32_t desc) } clear_tail(d, opr_sz, simd_maxsz(desc)); } + +void HELPER(gvec_bfdot_idx)(void *vd, void *vn, void *vm, + void *va, uint32_t desc) +{ + intptr_t i, j, opr_sz = simd_oprsz(desc); + intptr_t index = simd_data(desc); + intptr_t elements = opr_sz / 4; + intptr_t eltspersegment = MIN(16 / 4, elements); + float32 *d = vd, *a = va; + uint32_t *n = vn, *m = vm; + + for (i = 0; i < elements; i += eltspersegment) { + uint32_t m_idx = m[i + H4(index)]; + + for (j = i; j < i + eltspersegment; j++) { + d[j] = bfdotadd(a[j], n[j], m_idx); + } + } + clear_tail(d, opr_sz, simd_maxsz(desc)); +} -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFMMLA for both AArch64 AdvSIMD and SVE, and VMMLA.BF16 for AArch32 NEON. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-9-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 3 +++ target/arm/neon-shared.decode | 2 ++ target/arm/sve.decode | 6 +++-- target/arm/translate-a64.c | 10 +++++++++ target/arm/translate-neon.c | 9 ++++++++ target/arm/translate-sve.c | 12 ++++++++++ target/arm/vec_helper.c | 42 ++++++++++++++++++++++++++++++++++- 7 files changed, 81 insertions(+), 3 deletions(-) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(gvec_bfdot, TCG_CALL_NO_RWG, DEF_HELPER_FLAGS_5(gvec_bfdot_idx, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(gvec_bfmmla, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, i32) + #ifdef TARGET_AARCH64 #include "helper-a64.h" #include "helper-sve.h" diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -XXX,XX +XXX,XX @@ VUMMLA 1111 1100 0.10 .... .... 1100 .1.1 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp VUSMMLA 1111 1100 1.10 .... .... 1100 .1.0 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp +VMMLA_b16 1111 1100 0.00 .... .... 1100 .1.0 .... \ + vm=%vm_dp vn=%vn_dp vd=%vd_dp VCMLA_scalar 1111 1110 0 . rot:2 .... .... 1000 . q:1 index:1 0 vm:4 \ vn=%vn_dp vd=%vd_dp size=1 diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ SQRDCMLAH_zzzz 01000100 esz:2 0 rm:5 0011 rot:2 rn:5 rd:5 ra=%reg_movprfx USDOT_zzzz 01000100 .. 0 ..... 011 110 ..... ..... @rda_rn_rm ### SVE2 floating point matrix multiply accumulate - -FMMLA 01100100 .. 1 ..... 111001 ..... ..... @rda_rn_rm +{ + BFMMLA 01100100 01 1 ..... 111 001 ..... ..... @rda_rn_rm_e0 + FMMLA 01100100 .. 1 ..... 111 001 ..... ..... @rda_rn_rm +} ### SVE2 Memory Gather Load Group diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) } feature = dc_isar_feature(aa64_fcma, s); break; + case 0x1d: /* BFMMLA */ + if (size != MO_16 || !is_q) { + unallocated_encoding(s); + return; + } + feature = dc_isar_feature(aa64_bf16, s); + break; case 0x1f: /* BFDOT */ switch (size) { case 1: @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) } return; + case 0xd: /* BFMMLA */ + gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfmmla); + return; case 0xf: /* BFDOT */ switch (size) { case 1: diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VUSMMLA(DisasContext *s, arg_VUSMMLA *a) return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0, gen_helper_gvec_usmmla_b); } + +static bool trans_VMMLA_b16(DisasContext *s, arg_VMMLA_b16 *a) +{ + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0, + gen_helper_gvec_bfmmla); +} diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_BFDOT_zzxz(DisasContext *s, arg_rrxr_esz *a) } return true; } + +static bool trans_BFMMLA(DisasContext *s, arg_rrrr_esz *a) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + if (sve_access_check(s)) { + gen_gvec_ool_zzzz(s, gen_helper_gvec_bfmmla, + a->rd, a->rn, a->rm, a->ra, 0); + } + return true; +} diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -XXX,XX +XXX,XX @@ static void do_mmla_b(void *vd, void *vn, void *vm, void *va, uint32_t desc, * Process the entire segment at once, writing back the * results only after we've consumed all of the inputs. * - * Key to indicies by column: + * Key to indices by column: * i j i j */ sum0 = a[H4(0 + 0)]; @@ -XXX,XX +XXX,XX @@ void HELPER(gvec_bfdot_idx)(void *vd, void *vn, void *vm, } clear_tail(d, opr_sz, simd_maxsz(desc)); } + +void HELPER(gvec_bfmmla)(void *vd, void *vn, void *vm, void *va, uint32_t desc) +{ + intptr_t s, opr_sz = simd_oprsz(desc); + float32 *d = vd, *a = va; + uint32_t *n = vn, *m = vm; + + for (s = 0; s < opr_sz / 4; s += 4) { + float32 sum00, sum01, sum10, sum11; + + /* + * Process the entire segment at once, writing back the + * results only after we've consumed all of the inputs. + * + * Key to indicies by column: + * i j i k j k + */ + sum00 = a[s + H4(0 + 0)]; + sum00 = bfdotadd(sum00, n[s + H4(0 + 0)], m[s + H4(0 + 0)]); + sum00 = bfdotadd(sum00, n[s + H4(0 + 1)], m[s + H4(0 + 1)]); + + sum01 = a[s + H4(0 + 1)]; + sum01 = bfdotadd(sum01, n[s + H4(0 + 0)], m[s + H4(2 + 0)]); + sum01 = bfdotadd(sum01, n[s + H4(0 + 1)], m[s + H4(2 + 1)]); + + sum10 = a[s + H4(2 + 0)]; + sum10 = bfdotadd(sum10, n[s + H4(2 + 0)], m[s + H4(0 + 0)]); + sum10 = bfdotadd(sum10, n[s + H4(2 + 1)], m[s + H4(0 + 1)]); + + sum11 = a[s + H4(2 + 1)]; + sum11 = bfdotadd(sum11, n[s + H4(2 + 0)], m[s + H4(2 + 0)]); + sum11 = bfdotadd(sum11, n[s + H4(2 + 1)], m[s + H4(2 + 1)]); + + d[s + H4(0 + 0)] = sum00; + d[s + H4(0 + 1)] = sum01; + d[s + H4(2 + 0)] = sum10; + d[s + H4(2 + 1)] = sum11; + } + clear_tail(d, opr_sz, simd_maxsz(desc)); +} -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFMLAL{B,T} for both AArch64 AdvSIMD and SVE, and VFMA{B,T}.BF16 for AArch32 NEON. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-10-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 3 +++ target/arm/neon-shared.decode | 3 +++ target/arm/sve.decode | 3 +++ target/arm/translate-a64.c | 13 +++++++++---- target/arm/translate-neon.c | 9 +++++++++ target/arm/translate-sve.c | 30 ++++++++++++++++++++++++++++++ target/arm/vec_helper.c | 16 ++++++++++++++++ 7 files changed, 73 insertions(+), 4 deletions(-) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(gvec_bfdot_idx, TCG_CALL_NO_RWG, DEF_HELPER_FLAGS_5(gvec_bfmmla, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_6(gvec_bfmlal, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, ptr, i32) + #ifdef TARGET_AARCH64 #include "helper-a64.h" #include "helper-sve.h" diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -XXX,XX +XXX,XX @@ VUSMMLA 1111 1100 1.10 .... .... 1100 .1.0 .... \ VMMLA_b16 1111 1100 0.00 .... .... 1100 .1.0 .... \ vm=%vm_dp vn=%vn_dp vd=%vd_dp +VFMA_b16 1111 110 0 0.11 .... .... 1000 . q:1 . 1 .... \ + vm=%vm_dp vn=%vn_dp vd=%vd_dp + VCMLA_scalar 1111 1110 0 . rot:2 .... .... 1000 . q:1 index:1 0 vm:4 \ vn=%vn_dp vd=%vd_dp size=1 VCMLA_scalar 1111 1110 1 . rot:2 .... .... 1000 . q:1 . 0 .... \ diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ FMLALT_zzzw 01100100 10 1 ..... 10 0 00 1 ..... ..... @rda_rn_rm_e0 FMLSLB_zzzw 01100100 10 1 ..... 10 1 00 0 ..... ..... @rda_rn_rm_e0 FMLSLT_zzzw 01100100 10 1 ..... 10 1 00 1 ..... ..... @rda_rn_rm_e0 +BFMLALB_zzzw 01100100 11 1 ..... 10 0 00 0 ..... ..... @rda_rn_rm_e0 +BFMLALT_zzzw 01100100 11 1 ..... 10 0 00 1 ..... ..... @rda_rn_rm_e0 + ### SVE2 floating-point bfloat16 dot-product BFDOT_zzzz 01100100 01 1 ..... 10 0 00 0 ..... ..... @rda_rn_rm_e0 diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) } feature = dc_isar_feature(aa64_bf16, s); break; - case 0x1f: /* BFDOT */ + case 0x1f: switch (size) { - case 1: + case 1: /* BFDOT */ + case 3: /* BFMLAL{B,T} */ feature = dc_isar_feature(aa64_bf16, s); break; default: @@ -XXX,XX +XXX,XX @@ static void disas_simd_three_reg_same_extra(DisasContext *s, uint32_t insn) case 0xd: /* BFMMLA */ gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfmmla); return; - case 0xf: /* BFDOT */ + case 0xf: switch (size) { - case 1: + case 1: /* BFDOT */ gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, 0, gen_helper_gvec_bfdot); break; + case 3: /* BFMLAL{B,T} */ + gen_gvec_op4_fpst(s, 1, rd, rn, rm, rd, false, is_q, + gen_helper_gvec_bfmlal); + break; default: g_assert_not_reached(); } diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VMMLA_b16(DisasContext *s, arg_VMMLA_b16 *a) return do_neon_ddda(s, 7, a->vd, a->vn, a->vm, 0, gen_helper_gvec_bfmmla); } + +static bool trans_VFMA_b16(DisasContext *s, arg_VFMA_b16 *a) +{ + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + return do_neon_ddda_fpst(s, 7, a->vd, a->vn, a->vm, a->q, FPST_STD, + gen_helper_gvec_bfmlal); +} diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_BFMMLA(DisasContext *s, arg_rrrr_esz *a) } return true; } + +static bool do_BFMLAL_zzzw(DisasContext *s, arg_rrrr_esz *a, bool sel) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + if (sve_access_check(s)) { + TCGv_ptr status = fpstatus_ptr(FPST_FPCR); + unsigned vsz = vec_full_reg_size(s); + + tcg_gen_gvec_4_ptr(vec_full_reg_offset(s, a->rd), + vec_full_reg_offset(s, a->rn), + vec_full_reg_offset(s, a->rm), + vec_full_reg_offset(s, a->ra), + status, vsz, vsz, sel, + gen_helper_gvec_bfmlal); + tcg_temp_free_ptr(status); + } + return true; +} + +static bool trans_BFMLALB_zzzw(DisasContext *s, arg_rrrr_esz *a) +{ + return do_BFMLAL_zzzw(s, a, false); +} + +static bool trans_BFMLALT_zzzw(DisasContext *s, arg_rrrr_esz *a) +{ + return do_BFMLAL_zzzw(s, a, true); +} diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(gvec_bfmmla)(void *vd, void *vn, void *vm, void *va, uint32_t desc) } clear_tail(d, opr_sz, simd_maxsz(desc)); } + +void HELPER(gvec_bfmlal)(void *vd, void *vn, void *vm, void *va, + void *stat, uint32_t desc) +{ + intptr_t i, opr_sz = simd_oprsz(desc); + intptr_t sel = simd_data(desc); + float32 *d = vd, *a = va; + bfloat16 *n = vn, *m = vm; + + for (i = 0; i < opr_sz / 4; ++i) { + float32 nn = n[H2(i * 2 + sel)] << 16; + float32 mm = m[H2(i * 2 + sel)] << 16; + d[H4(i)] = float32_muladd(nn, mm, a[H4(i)], 0, stat); + } + clear_tail(d, opr_sz, simd_maxsz(desc)); +} -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> This is BFMLAL{B,T} for both AArch64 AdvSIMD and SVE, and VFMA{B,T}.BF16 for AArch32 NEON. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-11-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/helper.h | 2 ++ target/arm/neon-shared.decode | 2 ++ target/arm/sve.decode | 2 ++ target/arm/translate-a64.c | 15 ++++++++++++++- target/arm/translate-neon.c | 10 ++++++++++ target/arm/translate-sve.c | 30 ++++++++++++++++++++++++++++++ target/arm/vec_helper.c | 22 ++++++++++++++++++++++ 7 files changed, 82 insertions(+), 1 deletion(-) diff --git a/target/arm/helper.h b/target/arm/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/arm/helper.h +++ b/target/arm/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_5(gvec_bfmmla, TCG_CALL_NO_RWG, DEF_HELPER_FLAGS_6(gvec_bfmlal, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_6(gvec_bfmlal_idx, TCG_CALL_NO_RWG, + void, ptr, ptr, ptr, ptr, ptr, i32) #ifdef TARGET_AARCH64 #include "helper-a64.h" diff --git a/target/arm/neon-shared.decode b/target/arm/neon-shared.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/neon-shared.decode +++ b/target/arm/neon-shared.decode @@ -XXX,XX +XXX,XX @@ VFML_scalar 1111 1110 0 . 0 s:1 .... .... 1000 . 0 . 1 index:1 ... \ rm=%vfml_scalar_q0_rm vn=%vn_sp vd=%vd_dp q=0 VFML_scalar 1111 1110 0 . 0 s:1 .... .... 1000 . 1 . 1 . rm:3 \ index=%vfml_scalar_q1_index vn=%vn_dp vd=%vd_dp q=1 +VFMA_b16_scal 1111 1110 0.11 .... .... 1000 . q:1 . 1 . vm:3 \ + index=%vfml_scalar_q1_index vn=%vn_dp vd=%vd_dp diff --git a/target/arm/sve.decode b/target/arm/sve.decode index XXXXXXX..XXXXXXX 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -XXX,XX +XXX,XX @@ FMLALB_zzxw 01100100 10 1 ..... 0100.0 ..... ..... @rrxr_3a esz=2 FMLALT_zzxw 01100100 10 1 ..... 0100.1 ..... ..... @rrxr_3a esz=2 FMLSLB_zzxw 01100100 10 1 ..... 0110.0 ..... ..... @rrxr_3a esz=2 FMLSLT_zzxw 01100100 10 1 ..... 0110.1 ..... ..... @rrxr_3a esz=2 +BFMLALB_zzxw 01100100 11 1 ..... 0100.0 ..... ..... @rrxr_3a esz=2 +BFMLALT_zzxw 01100100 11 1 ..... 0100.1 ..... ..... @rrxr_3a esz=2 ### SVE2 floating-point bfloat16 dot-product (indexed) BFDOT_zzxz 01100100 01 1 ..... 010000 ..... ..... @rrxr_2 esz=2 diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -XXX,XX +XXX,XX @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn) unallocated_encoding(s); return; } + size = MO_32; break; case 1: /* BFDOT */ if (is_scalar || !dc_isar_feature(aa64_bf16, s)) { unallocated_encoding(s); return; } + size = MO_32; + break; + case 3: /* BFMLAL{B,T} */ + if (is_scalar || !dc_isar_feature(aa64_bf16, s)) { + unallocated_encoding(s); + return; + } + /* can't set is_fp without other incorrect size checks */ + size = MO_16; break; default: unallocated_encoding(s); return; } - size = MO_32; break; case 0x11: /* FCMLA #0 */ case 0x13: /* FCMLA #90 */ @@ -XXX,XX +XXX,XX @@ static void disas_simd_indexed(DisasContext *s, uint32_t insn) gen_gvec_op4_ool(s, is_q, rd, rn, rm, rd, index, gen_helper_gvec_usdot_idx_b); return; + case 3: /* BFMLAL{B,T} */ + gen_gvec_op4_fpst(s, 1, rd, rn, rm, rd, 0, (index << 1) | is_q, + gen_helper_gvec_bfmlal_idx); + return; } g_assert_not_reached(); case 0x11: /* FCMLA #0 */ diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-neon.c +++ b/target/arm/translate-neon.c @@ -XXX,XX +XXX,XX @@ static bool trans_VFMA_b16(DisasContext *s, arg_VFMA_b16 *a) return do_neon_ddda_fpst(s, 7, a->vd, a->vn, a->vm, a->q, FPST_STD, gen_helper_gvec_bfmlal); } + +static bool trans_VFMA_b16_scal(DisasContext *s, arg_VFMA_b16_scal *a) +{ + if (!dc_isar_feature(aa32_bf16, s)) { + return false; + } + return do_neon_ddda_fpst(s, 6, a->vd, a->vn, a->vm, + (a->index << 1) | a->q, FPST_STD, + gen_helper_gvec_bfmlal_idx); +} diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -XXX,XX +XXX,XX @@ static bool trans_BFMLALT_zzzw(DisasContext *s, arg_rrrr_esz *a) { return do_BFMLAL_zzzw(s, a, true); } + +static bool do_BFMLAL_zzxw(DisasContext *s, arg_rrxr_esz *a, bool sel) +{ + if (!dc_isar_feature(aa64_sve_bf16, s)) { + return false; + } + if (sve_access_check(s)) { + TCGv_ptr status = fpstatus_ptr(FPST_FPCR); + unsigned vsz = vec_full_reg_size(s); + + tcg_gen_gvec_4_ptr(vec_full_reg_offset(s, a->rd), + vec_full_reg_offset(s, a->rn), + vec_full_reg_offset(s, a->rm), + vec_full_reg_offset(s, a->ra), + status, vsz, vsz, (a->index << 1) | sel, + gen_helper_gvec_bfmlal_idx); + tcg_temp_free_ptr(status); + } + return true; +} + +static bool trans_BFMLALB_zzxw(DisasContext *s, arg_rrxr_esz *a) +{ + return do_BFMLAL_zzxw(s, a, false); +} + +static bool trans_BFMLALT_zzxw(DisasContext *s, arg_rrxr_esz *a) +{ + return do_BFMLAL_zzxw(s, a, true); +} diff --git a/target/arm/vec_helper.c b/target/arm/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/vec_helper.c +++ b/target/arm/vec_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(gvec_bfmlal)(void *vd, void *vn, void *vm, void *va, } clear_tail(d, opr_sz, simd_maxsz(desc)); } + +void HELPER(gvec_bfmlal_idx)(void *vd, void *vn, void *vm, + void *va, void *stat, uint32_t desc) +{ + intptr_t i, j, opr_sz = simd_oprsz(desc); + intptr_t sel = extract32(desc, SIMD_DATA_SHIFT, 1); + intptr_t index = extract32(desc, SIMD_DATA_SHIFT + 1, 3); + intptr_t elements = opr_sz / 4; + intptr_t eltspersegment = MIN(16 / 4, elements); + float32 *d = vd, *a = va; + bfloat16 *n = vn, *m = vm; + + for (i = 0; i < elements; i += eltspersegment) { + float32 m_idx = m[H2(2 * i + index)] << 16; + + for (j = i; j < i + eltspersegment; j++) { + float32 n_j = n[H2(2 * j + sel)] << 16; + d[H4(j)] = float32_muladd(n_j, m_idx, a[H4(j)], 0, stat); + } + } + clear_tail(d, opr_sz, simd_maxsz(desc)); +} -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-12-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- linux-user/elfload.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index XXXXXXX..XXXXXXX 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -XXX,XX +XXX,XX @@ static uint32_t get_elf_hwcap2(void) GET_FEATURE_ID(aa64_sve_i8mm, ARM_HWCAP2_A64_SVEI8MM); GET_FEATURE_ID(aa64_sve_f32mm, ARM_HWCAP2_A64_SVEF32MM); GET_FEATURE_ID(aa64_sve_f64mm, ARM_HWCAP2_A64_SVEF64MM); + GET_FEATURE_ID(aa64_sve_bf16, ARM_HWCAP2_A64_SVEBF16); GET_FEATURE_ID(aa64_i8mm, ARM_HWCAP2_A64_I8MM); + GET_FEATURE_ID(aa64_bf16, ARM_HWCAP2_A64_BF16); GET_FEATURE_ID(aa64_rndr, ARM_HWCAP2_A64_RNG); GET_FEATURE_ID(aa64_bti, ARM_HWCAP2_A64_BTI); GET_FEATURE_ID(aa64_mte, ARM_HWCAP2_A64_MTE); -- 2.20.1 From: Richard Henderson <richard.henderson@linaro.org> Disable BF16 again for !have_neon and !have_vfp during realize. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210525225817.400336-13-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/cpu.c | 3 +++ target/arm/cpu64.c | 3 +++ target/arm/cpu_tcg.c | 1 + 3 files changed, 7 insertions(+) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) u = cpu->isar.id_isar6; u = FIELD_DP32(u, ID_ISAR6, JSCVT, 0); + u = FIELD_DP32(u, ID_ISAR6, BF16, 0); cpu->isar.id_isar6 = u; u = cpu->isar.mvfr0; @@ -XXX,XX +XXX,XX @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) t = cpu->isar.id_aa64isar1; t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 0); + t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 0); t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 0); cpu->isar.id_aa64isar1 = t; @@ -XXX,XX +XXX,XX @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp) u = cpu->isar.id_isar6; u = FIELD_DP32(u, ID_ISAR6, DP, 0); u = FIELD_DP32(u, ID_ISAR6, FHM, 0); + u = FIELD_DP32(u, ID_ISAR6, BF16, 0); u = FIELD_DP32(u, ID_ISAR6, I8MM, 0); cpu->isar.id_isar6 = u; diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -XXX,XX +XXX,XX @@ static void aarch64_max_initfn(Object *obj) t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 1); t = FIELD_DP64(t, ID_AA64ISAR1, SB, 1); t = FIELD_DP64(t, ID_AA64ISAR1, SPECRES, 1); + t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 1); t = FIELD_DP64(t, ID_AA64ISAR1, FRINTTS, 1); t = FIELD_DP64(t, ID_AA64ISAR1, LRCPC, 2); /* ARMv8.4-RCPC */ t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 1); @@ -XXX,XX +XXX,XX @@ static void aarch64_max_initfn(Object *obj) t = FIELD_DP64(t, ID_AA64ZFR0, SVEVER, 1); t = FIELD_DP64(t, ID_AA64ZFR0, AES, 2); /* PMULL */ t = FIELD_DP64(t, ID_AA64ZFR0, BITPERM, 1); + t = FIELD_DP64(t, ID_AA64ZFR0, BFLOAT16, 1); t = FIELD_DP64(t, ID_AA64ZFR0, SHA3, 1); t = FIELD_DP64(t, ID_AA64ZFR0, SM4, 1); t = FIELD_DP64(t, ID_AA64ZFR0, I8MM, 1); @@ -XXX,XX +XXX,XX @@ static void aarch64_max_initfn(Object *obj) u = FIELD_DP32(u, ID_ISAR6, FHM, 1); u = FIELD_DP32(u, ID_ISAR6, SB, 1); u = FIELD_DP32(u, ID_ISAR6, SPECRES, 1); + u = FIELD_DP32(u, ID_ISAR6, BF16, 1); u = FIELD_DP32(u, ID_ISAR6, I8MM, 1); cpu->isar.id_isar6 = u; diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu_tcg.c +++ b/target/arm/cpu_tcg.c @@ -XXX,XX +XXX,XX @@ static void arm_max_initfn(Object *obj) t = FIELD_DP32(t, ID_ISAR6, FHM, 1); t = FIELD_DP32(t, ID_ISAR6, SB, 1); t = FIELD_DP32(t, ID_ISAR6, SPECRES, 1); + t = FIELD_DP32(t, ID_ISAR6, BF16, 1); t = FIELD_DP32(t, ID_ISAR6, I8MM, 1); cpu->isar.id_isar6 = t; -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> Until now, Hypervisor.framework has only been available on x86_64 systems. With Apple Silicon shipping now, it extends its reach to aarch64. To prepare for support for multiple architectures, let's start moving common code out into its own accel directory. This patch moves assert_hvf_ok() and introduces generic build infrastructure. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-2-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/sysemu/hvf_int.h | 18 +++++++++++++++ accel/hvf/hvf-all.c | 47 ++++++++++++++++++++++++++++++++++++++++ target/i386/hvf/hvf.c | 33 +--------------------------- MAINTAINERS | 8 +++++++ accel/hvf/meson.build | 6 +++++ accel/meson.build | 1 + 6 files changed, 81 insertions(+), 32 deletions(-) create mode 100644 include/sysemu/hvf_int.h create mode 100644 accel/hvf/hvf-all.c create mode 100644 accel/hvf/meson.build diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ +/* + * QEMU Hypervisor.framework (HVF) support + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +/* header to be included in HVF-specific code */ + +#ifndef HVF_INT_H +#define HVF_INT_H + +#include <Hypervisor/hv.h> + +void assert_hvf_ok(hv_return_t ret); + +#endif diff --git a/accel/hvf/hvf-all.c b/accel/hvf/hvf-all.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/accel/hvf/hvf-all.c @@ -XXX,XX +XXX,XX @@ +/* + * QEMU Hypervisor.framework support + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "qemu/error-report.h" +#include "sysemu/hvf.h" +#include "sysemu/hvf_int.h" + +void assert_hvf_ok(hv_return_t ret) +{ + if (ret == HV_SUCCESS) { + return; + } + + switch (ret) { + case HV_ERROR: + error_report("Error: HV_ERROR"); + break; + case HV_BUSY: + error_report("Error: HV_BUSY"); + break; + case HV_BAD_ARGUMENT: + error_report("Error: HV_BAD_ARGUMENT"); + break; + case HV_NO_RESOURCES: + error_report("Error: HV_NO_RESOURCES"); + break; + case HV_NO_DEVICE: + error_report("Error: HV_NO_DEVICE"); + break; + case HV_UNSUPPORTED: + error_report("Error: HV_UNSUPPORTED"); + break; + default: + error_report("Unknown Error"); + } + + abort(); +} diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf.c +++ b/target/i386/hvf/hvf.c @@ -XXX,XX +XXX,XX @@ #include "qemu/error-report.h" #include "sysemu/hvf.h" +#include "sysemu/hvf_int.h" #include "sysemu/runstate.h" #include "hvf-i386.h" #include "vmcs.h" @@ -XXX,XX +XXX,XX @@ HVFState *hvf_state; -static void assert_hvf_ok(hv_return_t ret) -{ - if (ret == HV_SUCCESS) { - return; - } - - switch (ret) { - case HV_ERROR: - error_report("Error: HV_ERROR"); - break; - case HV_BUSY: - error_report("Error: HV_BUSY"); - break; - case HV_BAD_ARGUMENT: - error_report("Error: HV_BAD_ARGUMENT"); - break; - case HV_NO_RESOURCES: - error_report("Error: HV_NO_RESOURCES"); - break; - case HV_NO_DEVICE: - error_report("Error: HV_NO_DEVICE"); - break; - case HV_UNSUPPORTED: - error_report("Error: HV_UNSUPPORTED"); - break; - default: - error_report("Unknown Error"); - } - - abort(); -} - /* Memory slots */ hvf_slot *hvf_find_overlap_slot(uint64_t start, uint64_t size) { diff --git a/MAINTAINERS b/MAINTAINERS index XXXXXXX..XXXXXXX 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -XXX,XX +XXX,XX @@ M: Roman Bolshakov <r.bolshakov@yadro.com> W: https://wiki.qemu.org/Features/HVF S: Maintained F: target/i386/hvf/ + +HVF +M: Cameron Esfahani <dirty@apple.com> +M: Roman Bolshakov <r.bolshakov@yadro.com> +W: https://wiki.qemu.org/Features/HVF +S: Maintained +F: accel/hvf/ F: include/sysemu/hvf.h +F: include/sysemu/hvf_int.h WHPX CPUs M: Sunil Muthuswamy <sunilmut@microsoft.com> diff --git a/accel/hvf/meson.build b/accel/hvf/meson.build new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/accel/hvf/meson.build @@ -XXX,XX +XXX,XX @@ +hvf_ss = ss.source_set() +hvf_ss.add(files( + 'hvf-all.c', +)) + +specific_ss.add_all(when: 'CONFIG_HVF', if_true: hvf_ss) diff --git a/accel/meson.build b/accel/meson.build index XXXXXXX..XXXXXXX 100644 --- a/accel/meson.build +++ b/accel/meson.build @@ -XXX,XX +XXX,XX @@ specific_ss.add(files('accel-common.c')) softmmu_ss.add(files('accel-softmmu.c')) user_ss.add(files('accel-user.c')) +subdir('hvf') subdir('qtest') subdir('kvm') subdir('tcg') -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> Until now, Hypervisor.framework has only been available on x86_64 systems. With Apple Silicon shipping now, it extends its reach to aarch64. To prepare for support for multiple architectures, let's start moving common code out into its own accel directory. This patch moves the vCPU thread loop over. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-3-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- {target/i386 => accel}/hvf/hvf-accel-ops.h | 0 {target/i386 => accel}/hvf/hvf-accel-ops.c | 0 target/i386/hvf/x86hvf.c | 2 +- accel/hvf/meson.build | 1 + target/i386/hvf/meson.build | 1 - 5 files changed, 2 insertions(+), 2 deletions(-) rename {target/i386 => accel}/hvf/hvf-accel-ops.h (100%) rename {target/i386 => accel}/hvf/hvf-accel-ops.c (100%) diff --git a/target/i386/hvf/hvf-accel-ops.h b/accel/hvf/hvf-accel-ops.h similarity index 100% rename from target/i386/hvf/hvf-accel-ops.h rename to accel/hvf/hvf-accel-ops.h diff --git a/target/i386/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c similarity index 100% rename from target/i386/hvf/hvf-accel-ops.c rename to accel/hvf/hvf-accel-ops.c diff --git a/target/i386/hvf/x86hvf.c b/target/i386/hvf/x86hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86hvf.c +++ b/target/i386/hvf/x86hvf.c @@ -XXX,XX +XXX,XX @@ #include <Hypervisor/hv.h> #include <Hypervisor/hv_vmx.h> -#include "hvf-accel-ops.h" +#include "accel/hvf/hvf-accel-ops.h" void hvf_set_segment(struct CPUState *cpu, struct vmx_segment *vmx_seg, SegmentCache *qseg, bool is_tr) diff --git a/accel/hvf/meson.build b/accel/hvf/meson.build index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/meson.build +++ b/accel/hvf/meson.build @@ -XXX,XX +XXX,XX @@ hvf_ss = ss.source_set() hvf_ss.add(files( 'hvf-all.c', + 'hvf-accel-ops.c', )) specific_ss.add_all(when: 'CONFIG_HVF', if_true: hvf_ss) diff --git a/target/i386/hvf/meson.build b/target/i386/hvf/meson.build index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/meson.build +++ b/target/i386/hvf/meson.build @@ -XXX,XX +XXX,XX @@ i386_softmmu_ss.add(when: [hvf, 'CONFIG_HVF'], if_true: files( 'hvf.c', - 'hvf-accel-ops.c', 'x86.c', 'x86_cpuid.c', 'x86_decode.c', -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> Until now, Hypervisor.framework has only been available on x86_64 systems. With Apple Silicon shipping now, it extends its reach to aarch64. To prepare for support for multiple architectures, let's start moving common code out into its own accel directory. This patch moves CPU and memory operations over. While at it, make sure the code is consumable on non-i386 systems. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-4-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/sysemu/hvf_int.h | 4 + target/i386/hvf/hvf-i386.h | 2 - target/i386/hvf/x86hvf.h | 2 - accel/hvf/hvf-accel-ops.c | 308 ++++++++++++++++++++++++++++++++++++- target/i386/hvf/hvf.c | 302 ------------------------------------ 5 files changed, 311 insertions(+), 307 deletions(-) diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ #include <Hypervisor/hv.h> +void hvf_set_phys_mem(MemoryRegionSection *, bool); void assert_hvf_ok(hv_return_t ret); +hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); +int hvf_put_registers(CPUState *); +int hvf_get_registers(CPUState *); #endif diff --git a/target/i386/hvf/hvf-i386.h b/target/i386/hvf/hvf-i386.h index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf-i386.h +++ b/target/i386/hvf/hvf-i386.h @@ -XXX,XX +XXX,XX @@ struct HVFState { }; extern HVFState *hvf_state; -void hvf_set_phys_mem(MemoryRegionSection *, bool); void hvf_handle_io(CPUArchState *, uint16_t, void *, int, int, int); -hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); #ifdef NEED_CPU_H /* Functions exported to host specific mode */ diff --git a/target/i386/hvf/x86hvf.h b/target/i386/hvf/x86hvf.h index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86hvf.h +++ b/target/i386/hvf/x86hvf.h @@ -XXX,XX +XXX,XX @@ #include "x86_descr.h" int hvf_process_events(CPUState *); -int hvf_put_registers(CPUState *); -int hvf_get_registers(CPUState *); bool hvf_inject_interrupts(CPUState *); void hvf_set_segment(struct CPUState *cpu, struct vmx_segment *vmx_seg, SegmentCache *qseg, bool is_tr); diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ #include "qemu/osdep.h" #include "qemu/error-report.h" #include "qemu/main-loop.h" +#include "exec/address-spaces.h" +#include "exec/exec-all.h" +#include "sysemu/cpus.h" #include "sysemu/hvf.h" +#include "sysemu/hvf_int.h" #include "sysemu/runstate.h" -#include "target/i386/cpu.h" #include "qemu/guest-random.h" #include "hvf-accel-ops.h" +HVFState *hvf_state; + +/* Memory slots */ + +hvf_slot *hvf_find_overlap_slot(uint64_t start, uint64_t size) +{ + hvf_slot *slot; + int x; + for (x = 0; x < hvf_state->num_slots; ++x) { + slot = &hvf_state->slots[x]; + if (slot->size && start < (slot->start + slot->size) && + (start + size) > slot->start) { + return slot; + } + } + return NULL; +} + +struct mac_slot { + int present; + uint64_t size; + uint64_t gpa_start; + uint64_t gva; +}; + +struct mac_slot mac_slots[32]; + +static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags) +{ + struct mac_slot *macslot; + hv_return_t ret; + + macslot = &mac_slots[slot->slot_id]; + + if (macslot->present) { + if (macslot->size != slot->size) { + macslot->present = 0; + ret = hv_vm_unmap(macslot->gpa_start, macslot->size); + assert_hvf_ok(ret); + } + } + + if (!slot->size) { + return 0; + } + + macslot->present = 1; + macslot->gpa_start = slot->start; + macslot->size = slot->size; + ret = hv_vm_map((hv_uvaddr_t)slot->mem, slot->start, slot->size, flags); + assert_hvf_ok(ret); + return 0; +} + +void hvf_set_phys_mem(MemoryRegionSection *section, bool add) +{ + hvf_slot *mem; + MemoryRegion *area = section->mr; + bool writeable = !area->readonly && !area->rom_device; + hv_memory_flags_t flags; + + if (!memory_region_is_ram(area)) { + if (writeable) { + return; + } else if (!memory_region_is_romd(area)) { + /* + * If the memory device is not in romd_mode, then we actually want + * to remove the hvf memory slot so all accesses will trap. + */ + add = false; + } + } + + mem = hvf_find_overlap_slot( + section->offset_within_address_space, + int128_get64(section->size)); + + if (mem && add) { + if (mem->size == int128_get64(section->size) && + mem->start == section->offset_within_address_space && + mem->mem == (memory_region_get_ram_ptr(area) + + section->offset_within_region)) { + return; /* Same region was attempted to register, go away. */ + } + } + + /* Region needs to be reset. set the size to 0 and remap it. */ + if (mem) { + mem->size = 0; + if (do_hvf_set_memory(mem, 0)) { + error_report("Failed to reset overlapping slot"); + abort(); + } + } + + if (!add) { + return; + } + + if (area->readonly || + (!memory_region_is_ram(area) && memory_region_is_romd(area))) { + flags = HV_MEMORY_READ | HV_MEMORY_EXEC; + } else { + flags = HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC; + } + + /* Now make a new slot. */ + int x; + + for (x = 0; x < hvf_state->num_slots; ++x) { + mem = &hvf_state->slots[x]; + if (!mem->size) { + break; + } + } + + if (x == hvf_state->num_slots) { + error_report("No free slots"); + abort(); + } + + mem->size = int128_get64(section->size); + mem->mem = memory_region_get_ram_ptr(area) + section->offset_within_region; + mem->start = section->offset_within_address_space; + mem->region = area; + + if (do_hvf_set_memory(mem, flags)) { + error_report("Error registering new memory slot"); + abort(); + } +} + +static void do_hvf_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg) +{ + if (!cpu->vcpu_dirty) { + hvf_get_registers(cpu); + cpu->vcpu_dirty = true; + } +} + +void hvf_cpu_synchronize_state(CPUState *cpu) +{ + if (!cpu->vcpu_dirty) { + run_on_cpu(cpu, do_hvf_cpu_synchronize_state, RUN_ON_CPU_NULL); + } +} + +static void do_hvf_cpu_synchronize_post_reset(CPUState *cpu, + run_on_cpu_data arg) +{ + hvf_put_registers(cpu); + cpu->vcpu_dirty = false; +} + +void hvf_cpu_synchronize_post_reset(CPUState *cpu) +{ + run_on_cpu(cpu, do_hvf_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); +} + +static void do_hvf_cpu_synchronize_post_init(CPUState *cpu, + run_on_cpu_data arg) +{ + hvf_put_registers(cpu); + cpu->vcpu_dirty = false; +} + +void hvf_cpu_synchronize_post_init(CPUState *cpu) +{ + run_on_cpu(cpu, do_hvf_cpu_synchronize_post_init, RUN_ON_CPU_NULL); +} + +static void do_hvf_cpu_synchronize_pre_loadvm(CPUState *cpu, + run_on_cpu_data arg) +{ + cpu->vcpu_dirty = true; +} + +void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu) +{ + run_on_cpu(cpu, do_hvf_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); +} + +static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on) +{ + hvf_slot *slot; + + slot = hvf_find_overlap_slot( + section->offset_within_address_space, + int128_get64(section->size)); + + /* protect region against writes; begin tracking it */ + if (on) { + slot->flags |= HVF_SLOT_LOG; + hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, + HV_MEMORY_READ); + /* stop tracking region*/ + } else { + slot->flags &= ~HVF_SLOT_LOG; + hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, + HV_MEMORY_READ | HV_MEMORY_WRITE); + } +} + +static void hvf_log_start(MemoryListener *listener, + MemoryRegionSection *section, int old, int new) +{ + if (old != 0) { + return; + } + + hvf_set_dirty_tracking(section, 1); +} + +static void hvf_log_stop(MemoryListener *listener, + MemoryRegionSection *section, int old, int new) +{ + if (new != 0) { + return; + } + + hvf_set_dirty_tracking(section, 0); +} + +static void hvf_log_sync(MemoryListener *listener, + MemoryRegionSection *section) +{ + /* + * sync of dirty pages is handled elsewhere; just make sure we keep + * tracking the region. + */ + hvf_set_dirty_tracking(section, 1); +} + +static void hvf_region_add(MemoryListener *listener, + MemoryRegionSection *section) +{ + hvf_set_phys_mem(section, true); +} + +static void hvf_region_del(MemoryListener *listener, + MemoryRegionSection *section) +{ + hvf_set_phys_mem(section, false); +} + +static MemoryListener hvf_memory_listener = { + .priority = 10, + .region_add = hvf_region_add, + .region_del = hvf_region_del, + .log_start = hvf_log_start, + .log_stop = hvf_log_stop, + .log_sync = hvf_log_sync, +}; + +static void dummy_signal(int sig) +{ +} + +bool hvf_allowed; + +static int hvf_accel_init(MachineState *ms) +{ + int x; + hv_return_t ret; + HVFState *s; + + ret = hv_vm_create(HV_VM_DEFAULT); + assert_hvf_ok(ret); + + s = g_new0(HVFState, 1); + + s->num_slots = 32; + for (x = 0; x < s->num_slots; ++x) { + s->slots[x].size = 0; + s->slots[x].slot_id = x; + } + + hvf_state = s; + memory_listener_register(&hvf_memory_listener, &address_space_memory); + return 0; +} + +static void hvf_accel_class_init(ObjectClass *oc, void *data) +{ + AccelClass *ac = ACCEL_CLASS(oc); + ac->name = "HVF"; + ac->init_machine = hvf_accel_init; + ac->allowed = &hvf_allowed; +} + +static const TypeInfo hvf_accel_type = { + .name = TYPE_HVF_ACCEL, + .parent = TYPE_ACCEL, + .class_init = hvf_accel_class_init, +}; + +static void hvf_type_init(void) +{ + type_register_static(&hvf_accel_type); +} + +type_init(hvf_type_init); + /* * The HVF-specific vCPU thread function. This one should only run when the host * CPU supports the VMX "unrestricted guest" feature. diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf.c +++ b/target/i386/hvf/hvf.c @@ -XXX,XX +XXX,XX @@ #include "hvf-accel-ops.h" -HVFState *hvf_state; - -/* Memory slots */ -hvf_slot *hvf_find_overlap_slot(uint64_t start, uint64_t size) -{ - hvf_slot *slot; - int x; - for (x = 0; x < hvf_state->num_slots; ++x) { - slot = &hvf_state->slots[x]; - if (slot->size && start < (slot->start + slot->size) && - (start + size) > slot->start) { - return slot; - } - } - return NULL; -} - -struct mac_slot { - int present; - uint64_t size; - uint64_t gpa_start; - uint64_t gva; -}; - -struct mac_slot mac_slots[32]; - -static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags) -{ - struct mac_slot *macslot; - hv_return_t ret; - - macslot = &mac_slots[slot->slot_id]; - - if (macslot->present) { - if (macslot->size != slot->size) { - macslot->present = 0; - ret = hv_vm_unmap(macslot->gpa_start, macslot->size); - assert_hvf_ok(ret); - } - } - - if (!slot->size) { - return 0; - } - - macslot->present = 1; - macslot->gpa_start = slot->start; - macslot->size = slot->size; - ret = hv_vm_map((hv_uvaddr_t)slot->mem, slot->start, slot->size, flags); - assert_hvf_ok(ret); - return 0; -} - -void hvf_set_phys_mem(MemoryRegionSection *section, bool add) -{ - hvf_slot *mem; - MemoryRegion *area = section->mr; - bool writeable = !area->readonly && !area->rom_device; - hv_memory_flags_t flags; - - if (!memory_region_is_ram(area)) { - if (writeable) { - return; - } else if (!memory_region_is_romd(area)) { - /* - * If the memory device is not in romd_mode, then we actually want - * to remove the hvf memory slot so all accesses will trap. - */ - add = false; - } - } - - mem = hvf_find_overlap_slot( - section->offset_within_address_space, - int128_get64(section->size)); - - if (mem && add) { - if (mem->size == int128_get64(section->size) && - mem->start == section->offset_within_address_space && - mem->mem == (memory_region_get_ram_ptr(area) + - section->offset_within_region)) { - return; /* Same region was attempted to register, go away. */ - } - } - - /* Region needs to be reset. set the size to 0 and remap it. */ - if (mem) { - mem->size = 0; - if (do_hvf_set_memory(mem, 0)) { - error_report("Failed to reset overlapping slot"); - abort(); - } - } - - if (!add) { - return; - } - - if (area->readonly || - (!memory_region_is_ram(area) && memory_region_is_romd(area))) { - flags = HV_MEMORY_READ | HV_MEMORY_EXEC; - } else { - flags = HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC; - } - - /* Now make a new slot. */ - int x; - - for (x = 0; x < hvf_state->num_slots; ++x) { - mem = &hvf_state->slots[x]; - if (!mem->size) { - break; - } - } - - if (x == hvf_state->num_slots) { - error_report("No free slots"); - abort(); - } - - mem->size = int128_get64(section->size); - mem->mem = memory_region_get_ram_ptr(area) + section->offset_within_region; - mem->start = section->offset_within_address_space; - mem->region = area; - - if (do_hvf_set_memory(mem, flags)) { - error_report("Error registering new memory slot"); - abort(); - } -} - void vmx_update_tpr(CPUState *cpu) { /* TODO: need integrate APIC handling */ @@ -XXX,XX +XXX,XX @@ void hvf_handle_io(CPUArchState *env, uint16_t port, void *buffer, } } -static void do_hvf_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg) -{ - if (!cpu->vcpu_dirty) { - hvf_get_registers(cpu); - cpu->vcpu_dirty = true; - } -} - -void hvf_cpu_synchronize_state(CPUState *cpu) -{ - if (!cpu->vcpu_dirty) { - run_on_cpu(cpu, do_hvf_cpu_synchronize_state, RUN_ON_CPU_NULL); - } -} - -static void do_hvf_cpu_synchronize_post_reset(CPUState *cpu, - run_on_cpu_data arg) -{ - hvf_put_registers(cpu); - cpu->vcpu_dirty = false; -} - -void hvf_cpu_synchronize_post_reset(CPUState *cpu) -{ - run_on_cpu(cpu, do_hvf_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); -} - -static void do_hvf_cpu_synchronize_post_init(CPUState *cpu, - run_on_cpu_data arg) -{ - hvf_put_registers(cpu); - cpu->vcpu_dirty = false; -} - -void hvf_cpu_synchronize_post_init(CPUState *cpu) -{ - run_on_cpu(cpu, do_hvf_cpu_synchronize_post_init, RUN_ON_CPU_NULL); -} - -static void do_hvf_cpu_synchronize_pre_loadvm(CPUState *cpu, - run_on_cpu_data arg) -{ - cpu->vcpu_dirty = true; -} - -void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu) -{ - run_on_cpu(cpu, do_hvf_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); -} - static bool ept_emulation_fault(hvf_slot *slot, uint64_t gpa, uint64_t ept_qual) { int read, write; @@ -XXX,XX +XXX,XX @@ static bool ept_emulation_fault(hvf_slot *slot, uint64_t gpa, uint64_t ept_qual) return false; } -static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on) -{ - hvf_slot *slot; - - slot = hvf_find_overlap_slot( - section->offset_within_address_space, - int128_get64(section->size)); - - /* protect region against writes; begin tracking it */ - if (on) { - slot->flags |= HVF_SLOT_LOG; - hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, - HV_MEMORY_READ); - /* stop tracking region*/ - } else { - slot->flags &= ~HVF_SLOT_LOG; - hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, - HV_MEMORY_READ | HV_MEMORY_WRITE); - } -} - -static void hvf_log_start(MemoryListener *listener, - MemoryRegionSection *section, int old, int new) -{ - if (old != 0) { - return; - } - - hvf_set_dirty_tracking(section, 1); -} - -static void hvf_log_stop(MemoryListener *listener, - MemoryRegionSection *section, int old, int new) -{ - if (new != 0) { - return; - } - - hvf_set_dirty_tracking(section, 0); -} - -static void hvf_log_sync(MemoryListener *listener, - MemoryRegionSection *section) -{ - /* - * sync of dirty pages is handled elsewhere; just make sure we keep - * tracking the region. - */ - hvf_set_dirty_tracking(section, 1); -} - -static void hvf_region_add(MemoryListener *listener, - MemoryRegionSection *section) -{ - hvf_set_phys_mem(section, true); -} - -static void hvf_region_del(MemoryListener *listener, - MemoryRegionSection *section) -{ - hvf_set_phys_mem(section, false); -} - -static MemoryListener hvf_memory_listener = { - .priority = 10, - .region_add = hvf_region_add, - .region_del = hvf_region_del, - .log_start = hvf_log_start, - .log_stop = hvf_log_stop, - .log_sync = hvf_log_sync, -}; - void hvf_vcpu_destroy(CPUState *cpu) { X86CPU *x86_cpu = X86_CPU(cpu); @@ -XXX,XX +XXX,XX @@ void hvf_vcpu_destroy(CPUState *cpu) assert_hvf_ok(ret); } -static void dummy_signal(int sig) -{ -} - static void init_tsc_freq(CPUX86State *env) { size_t length; @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) return ret; } - -bool hvf_allowed; - -static int hvf_accel_init(MachineState *ms) -{ - int x; - hv_return_t ret; - HVFState *s; - - ret = hv_vm_create(HV_VM_DEFAULT); - assert_hvf_ok(ret); - - s = g_new0(HVFState, 1); - - s->num_slots = 32; - for (x = 0; x < s->num_slots; ++x) { - s->slots[x].size = 0; - s->slots[x].slot_id = x; - } - - hvf_state = s; - memory_listener_register(&hvf_memory_listener, &address_space_memory); - return 0; -} - -static void hvf_accel_class_init(ObjectClass *oc, void *data) -{ - AccelClass *ac = ACCEL_CLASS(oc); - ac->name = "HVF"; - ac->init_machine = hvf_accel_init; - ac->allowed = &hvf_allowed; -} - -static const TypeInfo hvf_accel_type = { - .name = TYPE_HVF_ACCEL, - .parent = TYPE_ACCEL, - .class_init = hvf_accel_class_init, -}; - -static void hvf_type_init(void) -{ - type_register_static(&hvf_accel_type); -} - -type_init(hvf_type_init); -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> Until now, Hypervisor.framework has only been available on x86_64 systems. With Apple Silicon shipping now, it extends its reach to aarch64. To prepare for support for multiple architectures, let's start moving common code out into its own accel directory. This patch moves a few internal struct and constant defines over. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-5-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/sysemu/hvf_int.h | 30 ++++++++++++++++++++++++++++++ target/i386/hvf/hvf-i386.h | 31 +------------------------------ 2 files changed, 31 insertions(+), 30 deletions(-) diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ #include <Hypervisor/hv.h> +/* hvf_slot flags */ +#define HVF_SLOT_LOG (1 << 0) + +typedef struct hvf_slot { + uint64_t start; + uint64_t size; + uint8_t *mem; + int slot_id; + uint32_t flags; + MemoryRegion *region; +} hvf_slot; + +typedef struct hvf_vcpu_caps { + uint64_t vmx_cap_pinbased; + uint64_t vmx_cap_procbased; + uint64_t vmx_cap_procbased2; + uint64_t vmx_cap_entry; + uint64_t vmx_cap_exit; + uint64_t vmx_cap_preemption_timer; +} hvf_vcpu_caps; + +struct HVFState { + AccelState parent; + hvf_slot slots[32]; + int num_slots; + + hvf_vcpu_caps *hvf_caps; +}; +extern HVFState *hvf_state; + void hvf_set_phys_mem(MemoryRegionSection *, bool); void assert_hvf_ok(hv_return_t ret); hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); diff --git a/target/i386/hvf/hvf-i386.h b/target/i386/hvf/hvf-i386.h index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf-i386.h +++ b/target/i386/hvf/hvf-i386.h @@ -XXX,XX +XXX,XX @@ #include "qemu/accel.h" #include "sysemu/hvf.h" +#include "sysemu/hvf_int.h" #include "cpu.h" #include "x86.h" -/* hvf_slot flags */ -#define HVF_SLOT_LOG (1 << 0) - -typedef struct hvf_slot { - uint64_t start; - uint64_t size; - uint8_t *mem; - int slot_id; - uint32_t flags; - MemoryRegion *region; -} hvf_slot; - -typedef struct hvf_vcpu_caps { - uint64_t vmx_cap_pinbased; - uint64_t vmx_cap_procbased; - uint64_t vmx_cap_procbased2; - uint64_t vmx_cap_entry; - uint64_t vmx_cap_exit; - uint64_t vmx_cap_preemption_timer; -} hvf_vcpu_caps; - -struct HVFState { - AccelState parent; - hvf_slot slots[32]; - int num_slots; - - hvf_vcpu_caps *hvf_caps; -}; -extern HVFState *hvf_state; - void hvf_handle_io(CPUArchState *, uint16_t, void *, int, int, int); #ifdef NEED_CPU_H -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> The hvf_set_phys_mem() function is only called within the same file. Make it static. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-6-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/sysemu/hvf_int.h | 1 - accel/hvf/hvf-accel-ops.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ struct HVFState { }; extern HVFState *hvf_state; -void hvf_set_phys_mem(MemoryRegionSection *, bool); void assert_hvf_ok(hv_return_t ret); hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); int hvf_put_registers(CPUState *); diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags) return 0; } -void hvf_set_phys_mem(MemoryRegionSection *section, bool add) +static void hvf_set_phys_mem(MemoryRegionSection *section, bool add) { hvf_slot *mem; MemoryRegion *area = section->mr; -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> The ARM version of Hypervisor.framework no longer defines these two types, so let's just revert to standard ones. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-7-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags) macslot->present = 1; macslot->gpa_start = slot->start; macslot->size = slot->size; - ret = hv_vm_map((hv_uvaddr_t)slot->mem, slot->start, slot->size, flags); + ret = hv_vm_map(slot->mem, slot->start, slot->size, flags); assert_hvf_ok(ret); return 0; } @@ -XXX,XX +XXX,XX @@ static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on) /* protect region against writes; begin tracking it */ if (on) { slot->flags |= HVF_SLOT_LOG; - hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, + hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size, HV_MEMORY_READ); /* stop tracking region*/ } else { slot->flags &= ~HVF_SLOT_LOG; - hv_vm_protect((hv_gpaddr_t)slot->start, (size_t)slot->size, + hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size, HV_MEMORY_READ | HV_MEMORY_WRITE); } } -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> Until now, Hypervisor.framework has only been available on x86_64 systems. With Apple Silicon shipping now, it extends its reach to aarch64. To prepare for support for multiple architectures, let's start moving common code out into its own accel directory. This patch splits the vcpu init and destroy functions into a generic and an architecture specific portion. This also allows us to move the generic functions into the generic hvf code, removing exported functions. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-8-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.h | 2 -- include/sysemu/hvf_int.h | 2 ++ accel/hvf/hvf-accel-ops.c | 30 ++++++++++++++++++++++++++++++ target/i386/hvf/hvf.c | 23 ++--------------------- 4 files changed, 34 insertions(+), 23 deletions(-) diff --git a/accel/hvf/hvf-accel-ops.h b/accel/hvf/hvf-accel-ops.h index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.h +++ b/accel/hvf/hvf-accel-ops.h @@ -XXX,XX +XXX,XX @@ #include "sysemu/cpus.h" -int hvf_init_vcpu(CPUState *); int hvf_vcpu_exec(CPUState *); void hvf_cpu_synchronize_state(CPUState *); void hvf_cpu_synchronize_post_reset(CPUState *); void hvf_cpu_synchronize_post_init(CPUState *); void hvf_cpu_synchronize_pre_loadvm(CPUState *); -void hvf_vcpu_destroy(CPUState *); #endif /* HVF_CPUS_H */ diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ struct HVFState { extern HVFState *hvf_state; void assert_hvf_ok(hv_return_t ret); +int hvf_arch_init_vcpu(CPUState *cpu); +void hvf_arch_vcpu_destroy(CPUState *cpu); hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); int hvf_put_registers(CPUState *); int hvf_get_registers(CPUState *); diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static void hvf_type_init(void) type_init(hvf_type_init); +static void hvf_vcpu_destroy(CPUState *cpu) +{ + hv_return_t ret = hv_vcpu_destroy(cpu->hvf_fd); + assert_hvf_ok(ret); + + hvf_arch_vcpu_destroy(cpu); +} + +static int hvf_init_vcpu(CPUState *cpu) +{ + int r; + + /* init cpu signals */ + sigset_t set; + struct sigaction sigact; + + memset(&sigact, 0, sizeof(sigact)); + sigact.sa_handler = dummy_signal; + sigaction(SIG_IPI, &sigact, NULL); + + pthread_sigmask(SIG_BLOCK, NULL, &set); + sigdelset(&set, SIG_IPI); + + r = hv_vcpu_create((hv_vcpuid_t *)&cpu->hvf_fd, HV_VCPU_DEFAULT); + cpu->vcpu_dirty = 1; + assert_hvf_ok(r); + + return hvf_arch_init_vcpu(cpu); +} + /* * The HVF-specific vCPU thread function. This one should only run when the host * CPU supports the VMX "unrestricted guest" feature. diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf.c +++ b/target/i386/hvf/hvf.c @@ -XXX,XX +XXX,XX @@ static bool ept_emulation_fault(hvf_slot *slot, uint64_t gpa, uint64_t ept_qual) return false; } -void hvf_vcpu_destroy(CPUState *cpu) +void hvf_arch_vcpu_destroy(CPUState *cpu) { X86CPU *x86_cpu = X86_CPU(cpu); CPUX86State *env = &x86_cpu->env; - hv_return_t ret = hv_vcpu_destroy((hv_vcpuid_t)cpu->hvf_fd); g_free(env->hvf_mmio_buf); - assert_hvf_ok(ret); } static void init_tsc_freq(CPUX86State *env) @@ -XXX,XX +XXX,XX @@ static inline bool apic_bus_freq_is_known(CPUX86State *env) return env->apic_bus_freq != 0; } -int hvf_init_vcpu(CPUState *cpu) +int hvf_arch_init_vcpu(CPUState *cpu) { - X86CPU *x86cpu = X86_CPU(cpu); CPUX86State *env = &x86cpu->env; - int r; - - /* init cpu signals */ - sigset_t set; - struct sigaction sigact; - - memset(&sigact, 0, sizeof(sigact)); - sigact.sa_handler = dummy_signal; - sigaction(SIG_IPI, &sigact, NULL); - - pthread_sigmask(SIG_BLOCK, NULL, &set); - sigdelset(&set, SIG_IPI); init_emu(); init_decoder(); @@ -XXX,XX +XXX,XX @@ int hvf_init_vcpu(CPUState *cpu) } } - r = hv_vcpu_create((hv_vcpuid_t *)&cpu->hvf_fd, HV_VCPU_DEFAULT); - cpu->vcpu_dirty = 1; - assert_hvf_ok(r); - if (hv_vmx_read_capability(HV_VMX_CAP_PINBASED, &hvf_state->hvf_caps->vmx_cap_pinbased)) { abort(); -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> There is no reason to call the hvf specific hvf_cpu_synchronize_state() when we can just use the generic cpu_synchronize_state() instead. This allows us to have less dependency on internal function definitions and allows us to make hvf_cpu_synchronize_state() static. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-9-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.h | 1 - accel/hvf/hvf-accel-ops.c | 2 +- target/i386/hvf/x86hvf.c | 9 ++++----- 3 files changed, 5 insertions(+), 7 deletions(-) diff --git a/accel/hvf/hvf-accel-ops.h b/accel/hvf/hvf-accel-ops.h index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.h +++ b/accel/hvf/hvf-accel-ops.h @@ -XXX,XX +XXX,XX @@ #include "sysemu/cpus.h" int hvf_vcpu_exec(CPUState *); -void hvf_cpu_synchronize_state(CPUState *); void hvf_cpu_synchronize_post_reset(CPUState *); void hvf_cpu_synchronize_post_init(CPUState *); void hvf_cpu_synchronize_pre_loadvm(CPUState *); diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static void do_hvf_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg) } } -void hvf_cpu_synchronize_state(CPUState *cpu) +static void hvf_cpu_synchronize_state(CPUState *cpu) { if (!cpu->vcpu_dirty) { run_on_cpu(cpu, do_hvf_cpu_synchronize_state, RUN_ON_CPU_NULL); diff --git a/target/i386/hvf/x86hvf.c b/target/i386/hvf/x86hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86hvf.c +++ b/target/i386/hvf/x86hvf.c @@ -XXX,XX +XXX,XX @@ #include "cpu.h" #include "x86_descr.h" #include "x86_decode.h" +#include "sysemu/hw_accel.h" #include "hw/i386/apic_internal.h" #include <Hypervisor/hv.h> #include <Hypervisor/hv_vmx.h> -#include "accel/hvf/hvf-accel-ops.h" - void hvf_set_segment(struct CPUState *cpu, struct vmx_segment *vmx_seg, SegmentCache *qseg, bool is_tr) { @@ -XXX,XX +XXX,XX @@ int hvf_process_events(CPUState *cpu_state) env->eflags = rreg(cpu_state->hvf_fd, HV_X86_RFLAGS); if (cpu_state->interrupt_request & CPU_INTERRUPT_INIT) { - hvf_cpu_synchronize_state(cpu_state); + cpu_synchronize_state(cpu_state); do_cpu_init(cpu); } @@ -XXX,XX +XXX,XX @@ int hvf_process_events(CPUState *cpu_state) cpu_state->halted = 0; } if (cpu_state->interrupt_request & CPU_INTERRUPT_SIPI) { - hvf_cpu_synchronize_state(cpu_state); + cpu_synchronize_state(cpu_state); do_cpu_sipi(cpu); } if (cpu_state->interrupt_request & CPU_INTERRUPT_TPR) { cpu_state->interrupt_request &= ~CPU_INTERRUPT_TPR; - hvf_cpu_synchronize_state(cpu_state); + cpu_synchronize_state(cpu_state); apic_handle_tpr_access_report(cpu->apic_state, env->eip, env->tpr_access_type); } -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> The hvf accel synchronize functions are only used as input for local callback functions, so we can make them static. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-10-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.h | 3 --- accel/hvf/hvf-accel-ops.c | 6 +++--- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/accel/hvf/hvf-accel-ops.h b/accel/hvf/hvf-accel-ops.h index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.h +++ b/accel/hvf/hvf-accel-ops.h @@ -XXX,XX +XXX,XX @@ #include "sysemu/cpus.h" int hvf_vcpu_exec(CPUState *); -void hvf_cpu_synchronize_post_reset(CPUState *); -void hvf_cpu_synchronize_post_init(CPUState *); -void hvf_cpu_synchronize_pre_loadvm(CPUState *); #endif /* HVF_CPUS_H */ diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static void do_hvf_cpu_synchronize_post_reset(CPUState *cpu, cpu->vcpu_dirty = false; } -void hvf_cpu_synchronize_post_reset(CPUState *cpu) +static void hvf_cpu_synchronize_post_reset(CPUState *cpu) { run_on_cpu(cpu, do_hvf_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); } @@ -XXX,XX +XXX,XX @@ static void do_hvf_cpu_synchronize_post_init(CPUState *cpu, cpu->vcpu_dirty = false; } -void hvf_cpu_synchronize_post_init(CPUState *cpu) +static void hvf_cpu_synchronize_post_init(CPUState *cpu) { run_on_cpu(cpu, do_hvf_cpu_synchronize_post_init, RUN_ON_CPU_NULL); } @@ -XXX,XX +XXX,XX @@ static void do_hvf_cpu_synchronize_pre_loadvm(CPUState *cpu, cpu->vcpu_dirty = true; } -void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu) +static void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu) { run_on_cpu(cpu, do_hvf_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); } -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> We can move the definition of hvf_vcpu_exec() into our internal hvf header, obsoleting the need for hvf-accel-ops.h. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-11-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.h | 17 ----------------- include/sysemu/hvf_int.h | 1 + accel/hvf/hvf-accel-ops.c | 2 -- target/i386/hvf/hvf.c | 2 -- 4 files changed, 1 insertion(+), 21 deletions(-) delete mode 100644 accel/hvf/hvf-accel-ops.h diff --git a/accel/hvf/hvf-accel-ops.h b/accel/hvf/hvf-accel-ops.h deleted file mode 100644 index XXXXXXX..XXXXXXX --- a/accel/hvf/hvf-accel-ops.h +++ /dev/null @@ -XXX,XX +XXX,XX @@ -/* - * Accelerator CPUS Interface - * - * Copyright 2020 SUSE LLC - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - */ - -#ifndef HVF_CPUS_H -#define HVF_CPUS_H - -#include "sysemu/cpus.h" - -int hvf_vcpu_exec(CPUState *); - -#endif /* HVF_CPUS_H */ diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ extern HVFState *hvf_state; void assert_hvf_ok(hv_return_t ret); int hvf_arch_init_vcpu(CPUState *cpu); void hvf_arch_vcpu_destroy(CPUState *cpu); +int hvf_vcpu_exec(CPUState *); hvf_slot *hvf_find_overlap_slot(uint64_t, uint64_t); int hvf_put_registers(CPUState *); int hvf_get_registers(CPUState *); diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ #include "sysemu/runstate.h" #include "qemu/guest-random.h" -#include "hvf-accel-ops.h" - HVFState *hvf_state; /* Memory slots */ diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf.c +++ b/target/i386/hvf/hvf.c @@ -XXX,XX +XXX,XX @@ #include "qemu/accel.h" #include "target/i386/cpu.h" -#include "hvf-accel-ops.h" - void vmx_update_tpr(CPUState *cpu) { /* TODO: need integrate APIC handling */ -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> We will need more than a single field for hvf going forward. To keep the global vcpu struct uncluttered, let's allocate a special hvf vcpu struct, similar to how hax does it. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Tested-by: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-12-agraf@csgraf.de Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/core/cpu.h | 3 +- include/sysemu/hvf_int.h | 4 + target/i386/hvf/vmx.h | 24 +++-- accel/hvf/hvf-accel-ops.c | 8 +- target/i386/hvf/hvf.c | 104 +++++++++--------- target/i386/hvf/x86.c | 28 ++--- target/i386/hvf/x86_descr.c | 26 ++--- target/i386/hvf/x86_emu.c | 62 +++++------ target/i386/hvf/x86_mmu.c | 4 +- target/i386/hvf/x86_task.c | 12 +-- target/i386/hvf/x86hvf.c | 210 ++++++++++++++++++------------------ 11 files changed, 248 insertions(+), 237 deletions(-) diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -XXX,XX +XXX,XX @@ struct KVMState; struct kvm_run; struct hax_vcpu_state; +struct hvf_vcpu_state; #define TB_JMP_CACHE_BITS 12 #define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS) @@ -XXX,XX +XXX,XX @@ struct CPUState { struct hax_vcpu_state *hax_vcpu; - int hvf_fd; + struct hvf_vcpu_state *hvf; /* track IOMMUs whose translations we've cached in the TCG TLB */ GArray *iommu_notifiers; diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h index XXXXXXX..XXXXXXX 100644 --- a/include/sysemu/hvf_int.h +++ b/include/sysemu/hvf_int.h @@ -XXX,XX +XXX,XX @@ struct HVFState { }; extern HVFState *hvf_state; +struct hvf_vcpu_state { + int fd; +}; + void assert_hvf_ok(hv_return_t ret); int hvf_arch_init_vcpu(CPUState *cpu); void hvf_arch_vcpu_destroy(CPUState *cpu); diff --git a/target/i386/hvf/vmx.h b/target/i386/hvf/vmx.h index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/vmx.h +++ b/target/i386/hvf/vmx.h @@ -XXX,XX +XXX,XX @@ #include "vmcs.h" #include "cpu.h" #include "x86.h" +#include "sysemu/hvf.h" +#include "sysemu/hvf_int.h" #include "exec/address-spaces.h" @@ -XXX,XX +XXX,XX @@ static inline void macvm_set_rip(CPUState *cpu, uint64_t rip) uint64_t val; /* BUG, should take considering overlap.. */ - wreg(cpu->hvf_fd, HV_X86_RIP, rip); + wreg(cpu->hvf->fd, HV_X86_RIP, rip); env->eip = rip; /* after moving forward in rip, we need to clean INTERRUPTABILITY */ - val = rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); + val = rvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY); if (val & (VMCS_INTERRUPTIBILITY_STI_BLOCKING | VMCS_INTERRUPTIBILITY_MOVSS_BLOCKING)) { env->hflags &= ~HF_INHIBIT_IRQ_MASK; - wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, + wvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY, val & ~(VMCS_INTERRUPTIBILITY_STI_BLOCKING | VMCS_INTERRUPTIBILITY_MOVSS_BLOCKING)); } @@ -XXX,XX +XXX,XX @@ static inline void vmx_clear_nmi_blocking(CPUState *cpu) CPUX86State *env = &x86_cpu->env; env->hflags2 &= ~HF2_NMI_MASK; - uint32_t gi = (uint32_t) rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); + uint32_t gi = (uint32_t) rvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY); gi &= ~VMCS_INTERRUPTIBILITY_NMI_BLOCKING; - wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, gi); + wvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY, gi); } static inline void vmx_set_nmi_blocking(CPUState *cpu) @@ -XXX,XX +XXX,XX @@ static inline void vmx_set_nmi_blocking(CPUState *cpu) CPUX86State *env = &x86_cpu->env; env->hflags2 |= HF2_NMI_MASK; - uint32_t gi = (uint32_t)rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); + uint32_t gi = (uint32_t)rvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY); gi |= VMCS_INTERRUPTIBILITY_NMI_BLOCKING; - wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, gi); + wvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY, gi); } static inline void vmx_set_nmi_window_exiting(CPUState *cpu) { uint64_t val; - val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); - wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val | + val = rvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS); + wvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS, val | VMCS_PRI_PROC_BASED_CTLS_NMI_WINDOW_EXITING); } @@ -XXX,XX +XXX,XX @@ static inline void vmx_clear_nmi_window_exiting(CPUState *cpu) { uint64_t val; - val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); - wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val & + val = rvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS); + wvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS, val & ~VMCS_PRI_PROC_BASED_CTLS_NMI_WINDOW_EXITING); } diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ type_init(hvf_type_init); static void hvf_vcpu_destroy(CPUState *cpu) { - hv_return_t ret = hv_vcpu_destroy(cpu->hvf_fd); + hv_return_t ret = hv_vcpu_destroy(cpu->hvf->fd); assert_hvf_ok(ret); hvf_arch_vcpu_destroy(cpu); + g_free(cpu->hvf); + cpu->hvf = NULL; } static int hvf_init_vcpu(CPUState *cpu) { int r; + cpu->hvf = g_malloc0(sizeof(*cpu->hvf)); + /* init cpu signals */ sigset_t set; struct sigaction sigact; @@ -XXX,XX +XXX,XX @@ static int hvf_init_vcpu(CPUState *cpu) pthread_sigmask(SIG_BLOCK, NULL, &set); sigdelset(&set, SIG_IPI); - r = hv_vcpu_create((hv_vcpuid_t *)&cpu->hvf_fd, HV_VCPU_DEFAULT); + r = hv_vcpu_create((hv_vcpuid_t *)&cpu->hvf->fd, HV_VCPU_DEFAULT); cpu->vcpu_dirty = 1; assert_hvf_ok(r); diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/hvf.c +++ b/target/i386/hvf/hvf.c @@ -XXX,XX +XXX,XX @@ void vmx_update_tpr(CPUState *cpu) int tpr = cpu_get_apic_tpr(x86_cpu->apic_state) << 4; int irr = apic_get_highest_priority_irr(x86_cpu->apic_state); - wreg(cpu->hvf_fd, HV_X86_TPR, tpr); + wreg(cpu->hvf->fd, HV_X86_TPR, tpr); if (irr == -1) { - wvmcs(cpu->hvf_fd, VMCS_TPR_THRESHOLD, 0); + wvmcs(cpu->hvf->fd, VMCS_TPR_THRESHOLD, 0); } else { - wvmcs(cpu->hvf_fd, VMCS_TPR_THRESHOLD, (irr > tpr) ? tpr >> 4 : + wvmcs(cpu->hvf->fd, VMCS_TPR_THRESHOLD, (irr > tpr) ? tpr >> 4 : irr >> 4); } } @@ -XXX,XX +XXX,XX @@ void vmx_update_tpr(CPUState *cpu) static void update_apic_tpr(CPUState *cpu) { X86CPU *x86_cpu = X86_CPU(cpu); - int tpr = rreg(cpu->hvf_fd, HV_X86_TPR) >> 4; + int tpr = rreg(cpu->hvf->fd, HV_X86_TPR) >> 4; cpu_set_apic_tpr(x86_cpu->apic_state, tpr); } @@ -XXX,XX +XXX,XX @@ int hvf_arch_init_vcpu(CPUState *cpu) } /* set VMCS control fields */ - wvmcs(cpu->hvf_fd, VMCS_PIN_BASED_CTLS, + wvmcs(cpu->hvf->fd, VMCS_PIN_BASED_CTLS, cap2ctrl(hvf_state->hvf_caps->vmx_cap_pinbased, VMCS_PIN_BASED_CTLS_EXTINT | VMCS_PIN_BASED_CTLS_NMI | VMCS_PIN_BASED_CTLS_VNMI)); - wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, + wvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS, cap2ctrl(hvf_state->hvf_caps->vmx_cap_procbased, VMCS_PRI_PROC_BASED_CTLS_HLT | VMCS_PRI_PROC_BASED_CTLS_MWAIT | VMCS_PRI_PROC_BASED_CTLS_TSC_OFFSET | VMCS_PRI_PROC_BASED_CTLS_TPR_SHADOW) | VMCS_PRI_PROC_BASED_CTLS_SEC_CONTROL); - wvmcs(cpu->hvf_fd, VMCS_SEC_PROC_BASED_CTLS, + wvmcs(cpu->hvf->fd, VMCS_SEC_PROC_BASED_CTLS, cap2ctrl(hvf_state->hvf_caps->vmx_cap_procbased2, VMCS_PRI_PROC_BASED2_CTLS_APIC_ACCESSES)); - wvmcs(cpu->hvf_fd, VMCS_ENTRY_CTLS, cap2ctrl(hvf_state->hvf_caps->vmx_cap_entry, + wvmcs(cpu->hvf->fd, VMCS_ENTRY_CTLS, cap2ctrl(hvf_state->hvf_caps->vmx_cap_entry, 0)); - wvmcs(cpu->hvf_fd, VMCS_EXCEPTION_BITMAP, 0); /* Double fault */ + wvmcs(cpu->hvf->fd, VMCS_EXCEPTION_BITMAP, 0); /* Double fault */ - wvmcs(cpu->hvf_fd, VMCS_TPR_THRESHOLD, 0); + wvmcs(cpu->hvf->fd, VMCS_TPR_THRESHOLD, 0); x86cpu = X86_CPU(cpu); x86cpu->env.xsave_buf = qemu_memalign(4096, 4096); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_STAR, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_LSTAR, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_CSTAR, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_FMASK, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_FSBASE, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_GSBASE, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_KERNELGSBASE, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_TSC_AUX, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_IA32_TSC, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_IA32_SYSENTER_CS, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_IA32_SYSENTER_EIP, 1); - hv_vcpu_enable_native_msr(cpu->hvf_fd, MSR_IA32_SYSENTER_ESP, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_STAR, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_LSTAR, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_CSTAR, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_FMASK, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_FSBASE, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_GSBASE, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_KERNELGSBASE, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_TSC_AUX, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_IA32_TSC, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_IA32_SYSENTER_CS, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_IA32_SYSENTER_EIP, 1); + hv_vcpu_enable_native_msr(cpu->hvf->fd, MSR_IA32_SYSENTER_ESP, 1); return 0; } @@ -XXX,XX +XXX,XX @@ static void hvf_store_events(CPUState *cpu, uint32_t ins_len, uint64_t idtvec_in } if (idtvec_info & VMCS_IDT_VEC_ERRCODE_VALID) { env->has_error_code = true; - env->error_code = rvmcs(cpu->hvf_fd, VMCS_IDT_VECTORING_ERROR); + env->error_code = rvmcs(cpu->hvf->fd, VMCS_IDT_VECTORING_ERROR); } } - if ((rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY) & + if ((rvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY) & VMCS_INTERRUPTIBILITY_NMI_BLOCKING)) { env->hflags2 |= HF2_NMI_MASK; } else { env->hflags2 &= ~HF2_NMI_MASK; } - if (rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY) & + if (rvmcs(cpu->hvf->fd, VMCS_GUEST_INTERRUPTIBILITY) & (VMCS_INTERRUPTIBILITY_STI_BLOCKING | VMCS_INTERRUPTIBILITY_MOVSS_BLOCKING)) { env->hflags |= HF_INHIBIT_IRQ_MASK; @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) return EXCP_HLT; } - hv_return_t r = hv_vcpu_run(cpu->hvf_fd); + hv_return_t r = hv_vcpu_run(cpu->hvf->fd); assert_hvf_ok(r); /* handle VMEXIT */ - uint64_t exit_reason = rvmcs(cpu->hvf_fd, VMCS_EXIT_REASON); - uint64_t exit_qual = rvmcs(cpu->hvf_fd, VMCS_EXIT_QUALIFICATION); - uint32_t ins_len = (uint32_t)rvmcs(cpu->hvf_fd, + uint64_t exit_reason = rvmcs(cpu->hvf->fd, VMCS_EXIT_REASON); + uint64_t exit_qual = rvmcs(cpu->hvf->fd, VMCS_EXIT_QUALIFICATION); + uint32_t ins_len = (uint32_t)rvmcs(cpu->hvf->fd, VMCS_EXIT_INSTRUCTION_LENGTH); - uint64_t idtvec_info = rvmcs(cpu->hvf_fd, VMCS_IDT_VECTORING_INFO); + uint64_t idtvec_info = rvmcs(cpu->hvf->fd, VMCS_IDT_VECTORING_INFO); hvf_store_events(cpu, ins_len, idtvec_info); - rip = rreg(cpu->hvf_fd, HV_X86_RIP); - env->eflags = rreg(cpu->hvf_fd, HV_X86_RFLAGS); + rip = rreg(cpu->hvf->fd, HV_X86_RIP); + env->eflags = rreg(cpu->hvf->fd, HV_X86_RFLAGS); qemu_mutex_lock_iothread(); @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) case EXIT_REASON_EPT_FAULT: { hvf_slot *slot; - uint64_t gpa = rvmcs(cpu->hvf_fd, VMCS_GUEST_PHYSICAL_ADDRESS); + uint64_t gpa = rvmcs(cpu->hvf->fd, VMCS_GUEST_PHYSICAL_ADDRESS); if (((idtvec_info & VMCS_IDT_VEC_VALID) == 0) && ((exit_qual & EXIT_QUAL_NMIUDTI) != 0)) { @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) store_regs(cpu); break; } else if (!string && !in) { - RAX(env) = rreg(cpu->hvf_fd, HV_X86_RAX); + RAX(env) = rreg(cpu->hvf->fd, HV_X86_RAX); hvf_handle_io(env, port, &RAX(env), 1, size, 1); macvm_set_rip(cpu, rip + ins_len); break; @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) break; } case EXIT_REASON_CPUID: { - uint32_t rax = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RAX); - uint32_t rbx = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RBX); - uint32_t rcx = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RCX); - uint32_t rdx = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RDX); + uint32_t rax = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RAX); + uint32_t rbx = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RBX); + uint32_t rcx = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RCX); + uint32_t rdx = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RDX); if (rax == 1) { /* CPUID1.ecx.OSXSAVE needs to know CR4 */ - env->cr[4] = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR4); + env->cr[4] = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR4); } hvf_cpu_x86_cpuid(env, rax, rcx, &rax, &rbx, &rcx, &rdx); - wreg(cpu->hvf_fd, HV_X86_RAX, rax); - wreg(cpu->hvf_fd, HV_X86_RBX, rbx); - wreg(cpu->hvf_fd, HV_X86_RCX, rcx); - wreg(cpu->hvf_fd, HV_X86_RDX, rdx); + wreg(cpu->hvf->fd, HV_X86_RAX, rax); + wreg(cpu->hvf->fd, HV_X86_RBX, rbx); + wreg(cpu->hvf->fd, HV_X86_RCX, rcx); + wreg(cpu->hvf->fd, HV_X86_RDX, rdx); macvm_set_rip(cpu, rip + ins_len); break; @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) case EXIT_REASON_XSETBV: { X86CPU *x86_cpu = X86_CPU(cpu); CPUX86State *env = &x86_cpu->env; - uint32_t eax = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RAX); - uint32_t ecx = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RCX); - uint32_t edx = (uint32_t)rreg(cpu->hvf_fd, HV_X86_RDX); + uint32_t eax = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RAX); + uint32_t ecx = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RCX); + uint32_t edx = (uint32_t)rreg(cpu->hvf->fd, HV_X86_RDX); if (ecx) { macvm_set_rip(cpu, rip + ins_len); break; } env->xcr0 = ((uint64_t)edx << 32) | eax; - wreg(cpu->hvf_fd, HV_X86_XCR0, env->xcr0 | 1); + wreg(cpu->hvf->fd, HV_X86_XCR0, env->xcr0 | 1); macvm_set_rip(cpu, rip + ins_len); break; } @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) switch (cr) { case 0x0: { - macvm_set_cr0(cpu->hvf_fd, RRX(env, reg)); + macvm_set_cr0(cpu->hvf->fd, RRX(env, reg)); break; } case 4: { - macvm_set_cr4(cpu->hvf_fd, RRX(env, reg)); + macvm_set_cr4(cpu->hvf->fd, RRX(env, reg)); break; } case 8: { @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) break; } case EXIT_REASON_TASK_SWITCH: { - uint64_t vinfo = rvmcs(cpu->hvf_fd, VMCS_IDT_VECTORING_INFO); + uint64_t vinfo = rvmcs(cpu->hvf->fd, VMCS_IDT_VECTORING_INFO); x68_segment_selector sel = {.sel = exit_qual & 0xffff}; vmx_handle_task_switch(cpu, sel, (exit_qual >> 30) & 0x3, vinfo & VMCS_INTR_VALID, vinfo & VECTORING_INFO_VECTOR_MASK, vinfo @@ -XXX,XX +XXX,XX @@ int hvf_vcpu_exec(CPUState *cpu) break; } case EXIT_REASON_RDPMC: - wreg(cpu->hvf_fd, HV_X86_RAX, 0); - wreg(cpu->hvf_fd, HV_X86_RDX, 0); + wreg(cpu->hvf->fd, HV_X86_RAX, 0); + wreg(cpu->hvf->fd, HV_X86_RDX, 0); macvm_set_rip(cpu, rip + ins_len); break; case VMX_REASON_VMCALL: diff --git a/target/i386/hvf/x86.c b/target/i386/hvf/x86.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86.c +++ b/target/i386/hvf/x86.c @@ -XXX,XX +XXX,XX @@ bool x86_read_segment_descriptor(struct CPUState *cpu, } if (GDT_SEL == sel.ti) { - base = rvmcs(cpu->hvf_fd, VMCS_GUEST_GDTR_BASE); - limit = rvmcs(cpu->hvf_fd, VMCS_GUEST_GDTR_LIMIT); + base = rvmcs(cpu->hvf->fd, VMCS_GUEST_GDTR_BASE); + limit = rvmcs(cpu->hvf->fd, VMCS_GUEST_GDTR_LIMIT); } else { - base = rvmcs(cpu->hvf_fd, VMCS_GUEST_LDTR_BASE); - limit = rvmcs(cpu->hvf_fd, VMCS_GUEST_LDTR_LIMIT); + base = rvmcs(cpu->hvf->fd, VMCS_GUEST_LDTR_BASE); + limit = rvmcs(cpu->hvf->fd, VMCS_GUEST_LDTR_LIMIT); } if (sel.index * 8 >= limit) { @@ -XXX,XX +XXX,XX @@ bool x86_write_segment_descriptor(struct CPUState *cpu, uint32_t limit; if (GDT_SEL == sel.ti) { - base = rvmcs(cpu->hvf_fd, VMCS_GUEST_GDTR_BASE); - limit = rvmcs(cpu->hvf_fd, VMCS_GUEST_GDTR_LIMIT); + base = rvmcs(cpu->hvf->fd, VMCS_GUEST_GDTR_BASE); + limit = rvmcs(cpu->hvf->fd, VMCS_GUEST_GDTR_LIMIT); } else { - base = rvmcs(cpu->hvf_fd, VMCS_GUEST_LDTR_BASE); - limit = rvmcs(cpu->hvf_fd, VMCS_GUEST_LDTR_LIMIT); + base = rvmcs(cpu->hvf->fd, VMCS_GUEST_LDTR_BASE); + limit = rvmcs(cpu->hvf->fd, VMCS_GUEST_LDTR_LIMIT); } if (sel.index * 8 >= limit) { @@ -XXX,XX +XXX,XX @@ bool x86_write_segment_descriptor(struct CPUState *cpu, bool x86_read_call_gate(struct CPUState *cpu, struct x86_call_gate *idt_desc, int gate) { - target_ulong base = rvmcs(cpu->hvf_fd, VMCS_GUEST_IDTR_BASE); - uint32_t limit = rvmcs(cpu->hvf_fd, VMCS_GUEST_IDTR_LIMIT); + target_ulong base = rvmcs(cpu->hvf->fd, VMCS_GUEST_IDTR_BASE); + uint32_t limit = rvmcs(cpu->hvf->fd, VMCS_GUEST_IDTR_LIMIT); memset(idt_desc, 0, sizeof(*idt_desc)); if (gate * 8 >= limit) { @@ -XXX,XX +XXX,XX @@ bool x86_read_call_gate(struct CPUState *cpu, struct x86_call_gate *idt_desc, bool x86_is_protected(struct CPUState *cpu) { - uint64_t cr0 = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0); + uint64_t cr0 = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR0); return cr0 & CR0_PE; } @@ -XXX,XX +XXX,XX @@ bool x86_is_v8086(struct CPUState *cpu) bool x86_is_long_mode(struct CPUState *cpu) { - return rvmcs(cpu->hvf_fd, VMCS_GUEST_IA32_EFER) & MSR_EFER_LMA; + return rvmcs(cpu->hvf->fd, VMCS_GUEST_IA32_EFER) & MSR_EFER_LMA; } bool x86_is_long64_mode(struct CPUState *cpu) @@ -XXX,XX +XXX,XX @@ bool x86_is_long64_mode(struct CPUState *cpu) bool x86_is_paging_mode(struct CPUState *cpu) { - uint64_t cr0 = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0); + uint64_t cr0 = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR0); return cr0 & CR0_PG; } bool x86_is_pae_enabled(struct CPUState *cpu) { - uint64_t cr4 = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR4); + uint64_t cr4 = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR4); return cr4 & CR4_PAE; } diff --git a/target/i386/hvf/x86_descr.c b/target/i386/hvf/x86_descr.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86_descr.c +++ b/target/i386/hvf/x86_descr.c @@ -XXX,XX +XXX,XX @@ static const struct vmx_segment_field { uint32_t vmx_read_segment_limit(CPUState *cpu, X86Seg seg) { - return (uint32_t)rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].limit); + return (uint32_t)rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].limit); } uint32_t vmx_read_segment_ar(CPUState *cpu, X86Seg seg) { - return (uint32_t)rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].ar_bytes); + return (uint32_t)rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].ar_bytes); } uint64_t vmx_read_segment_base(CPUState *cpu, X86Seg seg) { - return rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].base); + return rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].base); } x68_segment_selector vmx_read_segment_selector(CPUState *cpu, X86Seg seg) { x68_segment_selector sel; - sel.sel = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector); + sel.sel = rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].selector); return sel; } void vmx_write_segment_selector(struct CPUState *cpu, x68_segment_selector selector, X86Seg seg) { - wvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector, selector.sel); + wvmcs(cpu->hvf->fd, vmx_segment_fields[seg].selector, selector.sel); } void vmx_read_segment_descriptor(struct CPUState *cpu, struct vmx_segment *desc, X86Seg seg) { - desc->sel = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].selector); - desc->base = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].base); - desc->limit = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].limit); - desc->ar = rvmcs(cpu->hvf_fd, vmx_segment_fields[seg].ar_bytes); + desc->sel = rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].selector); + desc->base = rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].base); + desc->limit = rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].limit); + desc->ar = rvmcs(cpu->hvf->fd, vmx_segment_fields[seg].ar_bytes); } void vmx_write_segment_descriptor(CPUState *cpu, struct vmx_segment *desc, X86Seg seg) { const struct vmx_segment_field *sf = &vmx_segment_fields[seg]; - wvmcs(cpu->hvf_fd, sf->base, desc->base); - wvmcs(cpu->hvf_fd, sf->limit, desc->limit); - wvmcs(cpu->hvf_fd, sf->selector, desc->sel); - wvmcs(cpu->hvf_fd, sf->ar_bytes, desc->ar); + wvmcs(cpu->hvf->fd, sf->base, desc->base); + wvmcs(cpu->hvf->fd, sf->limit, desc->limit); + wvmcs(cpu->hvf->fd, sf->selector, desc->sel); + wvmcs(cpu->hvf->fd, sf->ar_bytes, desc->ar); } void x86_segment_descriptor_to_vmx(struct CPUState *cpu, x68_segment_selector selector, struct x86_segment_descriptor *desc, struct vmx_segment *vmx_desc) diff --git a/target/i386/hvf/x86_emu.c b/target/i386/hvf/x86_emu.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86_emu.c +++ b/target/i386/hvf/x86_emu.c @@ -XXX,XX +XXX,XX @@ void simulate_rdmsr(struct CPUState *cpu) switch (msr) { case MSR_IA32_TSC: - val = rdtscp() + rvmcs(cpu->hvf_fd, VMCS_TSC_OFFSET); + val = rdtscp() + rvmcs(cpu->hvf->fd, VMCS_TSC_OFFSET); break; case MSR_IA32_APICBASE: val = cpu_get_apic_base(X86_CPU(cpu)->apic_state); @@ -XXX,XX +XXX,XX @@ void simulate_rdmsr(struct CPUState *cpu) val = x86_cpu->ucode_rev; break; case MSR_EFER: - val = rvmcs(cpu->hvf_fd, VMCS_GUEST_IA32_EFER); + val = rvmcs(cpu->hvf->fd, VMCS_GUEST_IA32_EFER); break; case MSR_FSBASE: - val = rvmcs(cpu->hvf_fd, VMCS_GUEST_FS_BASE); + val = rvmcs(cpu->hvf->fd, VMCS_GUEST_FS_BASE); break; case MSR_GSBASE: - val = rvmcs(cpu->hvf_fd, VMCS_GUEST_GS_BASE); + val = rvmcs(cpu->hvf->fd, VMCS_GUEST_GS_BASE); break; case MSR_KERNELGSBASE: - val = rvmcs(cpu->hvf_fd, VMCS_HOST_FS_BASE); + val = rvmcs(cpu->hvf->fd, VMCS_HOST_FS_BASE); break; case MSR_STAR: abort(); @@ -XXX,XX +XXX,XX @@ void simulate_wrmsr(struct CPUState *cpu) cpu_set_apic_base(X86_CPU(cpu)->apic_state, data); break; case MSR_FSBASE: - wvmcs(cpu->hvf_fd, VMCS_GUEST_FS_BASE, data); + wvmcs(cpu->hvf->fd, VMCS_GUEST_FS_BASE, data); break; case MSR_GSBASE: - wvmcs(cpu->hvf_fd, VMCS_GUEST_GS_BASE, data); + wvmcs(cpu->hvf->fd, VMCS_GUEST_GS_BASE, data); break; case MSR_KERNELGSBASE: - wvmcs(cpu->hvf_fd, VMCS_HOST_FS_BASE, data); + wvmcs(cpu->hvf->fd, VMCS_HOST_FS_BASE, data); break; case MSR_STAR: abort(); @@ -XXX,XX +XXX,XX @@ void simulate_wrmsr(struct CPUState *cpu) break; case MSR_EFER: /*printf("new efer %llx\n", EFER(cpu));*/ - wvmcs(cpu->hvf_fd, VMCS_GUEST_IA32_EFER, data); + wvmcs(cpu->hvf->fd, VMCS_GUEST_IA32_EFER, data); if (data & MSR_EFER_NXE) { - hv_vcpu_invalidate_tlb(cpu->hvf_fd); + hv_vcpu_invalidate_tlb(cpu->hvf->fd); } break; case MSR_MTRRphysBase(0): @@ -XXX,XX +XXX,XX @@ void load_regs(struct CPUState *cpu) CPUX86State *env = &x86_cpu->env; int i = 0; - RRX(env, R_EAX) = rreg(cpu->hvf_fd, HV_X86_RAX); - RRX(env, R_EBX) = rreg(cpu->hvf_fd, HV_X86_RBX); - RRX(env, R_ECX) = rreg(cpu->hvf_fd, HV_X86_RCX); - RRX(env, R_EDX) = rreg(cpu->hvf_fd, HV_X86_RDX); - RRX(env, R_ESI) = rreg(cpu->hvf_fd, HV_X86_RSI); - RRX(env, R_EDI) = rreg(cpu->hvf_fd, HV_X86_RDI); - RRX(env, R_ESP) = rreg(cpu->hvf_fd, HV_X86_RSP); - RRX(env, R_EBP) = rreg(cpu->hvf_fd, HV_X86_RBP); + RRX(env, R_EAX) = rreg(cpu->hvf->fd, HV_X86_RAX); + RRX(env, R_EBX) = rreg(cpu->hvf->fd, HV_X86_RBX); + RRX(env, R_ECX) = rreg(cpu->hvf->fd, HV_X86_RCX); + RRX(env, R_EDX) = rreg(cpu->hvf->fd, HV_X86_RDX); + RRX(env, R_ESI) = rreg(cpu->hvf->fd, HV_X86_RSI); + RRX(env, R_EDI) = rreg(cpu->hvf->fd, HV_X86_RDI); + RRX(env, R_ESP) = rreg(cpu->hvf->fd, HV_X86_RSP); + RRX(env, R_EBP) = rreg(cpu->hvf->fd, HV_X86_RBP); for (i = 8; i < 16; i++) { - RRX(env, i) = rreg(cpu->hvf_fd, HV_X86_RAX + i); + RRX(env, i) = rreg(cpu->hvf->fd, HV_X86_RAX + i); } - env->eflags = rreg(cpu->hvf_fd, HV_X86_RFLAGS); + env->eflags = rreg(cpu->hvf->fd, HV_X86_RFLAGS); rflags_to_lflags(env); - env->eip = rreg(cpu->hvf_fd, HV_X86_RIP); + env->eip = rreg(cpu->hvf->fd, HV_X86_RIP); } void store_regs(struct CPUState *cpu) @@ -XXX,XX +XXX,XX @@ void store_regs(struct CPUState *cpu) CPUX86State *env = &x86_cpu->env; int i = 0; - wreg(cpu->hvf_fd, HV_X86_RAX, RAX(env)); - wreg(cpu->hvf_fd, HV_X86_RBX, RBX(env)); - wreg(cpu->hvf_fd, HV_X86_RCX, RCX(env)); - wreg(cpu->hvf_fd, HV_X86_RDX, RDX(env)); - wreg(cpu->hvf_fd, HV_X86_RSI, RSI(env)); - wreg(cpu->hvf_fd, HV_X86_RDI, RDI(env)); - wreg(cpu->hvf_fd, HV_X86_RBP, RBP(env)); - wreg(cpu->hvf_fd, HV_X86_RSP, RSP(env)); + wreg(cpu->hvf->fd, HV_X86_RAX, RAX(env)); + wreg(cpu->hvf->fd, HV_X86_RBX, RBX(env)); + wreg(cpu->hvf->fd, HV_X86_RCX, RCX(env)); + wreg(cpu->hvf->fd, HV_X86_RDX, RDX(env)); + wreg(cpu->hvf->fd, HV_X86_RSI, RSI(env)); + wreg(cpu->hvf->fd, HV_X86_RDI, RDI(env)); + wreg(cpu->hvf->fd, HV_X86_RBP, RBP(env)); + wreg(cpu->hvf->fd, HV_X86_RSP, RSP(env)); for (i = 8; i < 16; i++) { - wreg(cpu->hvf_fd, HV_X86_RAX + i, RRX(env, i)); + wreg(cpu->hvf->fd, HV_X86_RAX + i, RRX(env, i)); } lflags_to_rflags(env); - wreg(cpu->hvf_fd, HV_X86_RFLAGS, env->eflags); + wreg(cpu->hvf->fd, HV_X86_RFLAGS, env->eflags); macvm_set_rip(cpu, env->eip); } diff --git a/target/i386/hvf/x86_mmu.c b/target/i386/hvf/x86_mmu.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86_mmu.c +++ b/target/i386/hvf/x86_mmu.c @@ -XXX,XX +XXX,XX @@ static bool test_pt_entry(struct CPUState *cpu, struct gpt_translation *pt, pt->err_code |= MMU_PAGE_PT; } - uint32_t cr0 = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0); + uint32_t cr0 = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR0); /* check protection */ if (cr0 & CR0_WP) { if (pt->write_access && !pte_write_access(pte)) { @@ -XXX,XX +XXX,XX @@ static bool walk_gpt(struct CPUState *cpu, target_ulong addr, int err_code, { int top_level, level; bool is_large = false; - target_ulong cr3 = rvmcs(cpu->hvf_fd, VMCS_GUEST_CR3); + target_ulong cr3 = rvmcs(cpu->hvf->fd, VMCS_GUEST_CR3); uint64_t page_mask = pae ? PAE_PTE_PAGE_MASK : LEGACY_PTE_PAGE_MASK; memset(pt, 0, sizeof(*pt)); diff --git a/target/i386/hvf/x86_task.c b/target/i386/hvf/x86_task.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86_task.c +++ b/target/i386/hvf/x86_task.c @@ -XXX,XX +XXX,XX @@ static void load_state_from_tss32(CPUState *cpu, struct x86_tss_segment32 *tss) X86CPU *x86_cpu = X86_CPU(cpu); CPUX86State *env = &x86_cpu->env; - wvmcs(cpu->hvf_fd, VMCS_GUEST_CR3, tss->cr3); + wvmcs(cpu->hvf->fd, VMCS_GUEST_CR3, tss->cr3); env->eip = tss->eip; env->eflags = tss->eflags | 2; @@ -XXX,XX +XXX,XX @@ static int task_switch_32(CPUState *cpu, x68_segment_selector tss_sel, x68_segme void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int reason, bool gate_valid, uint8_t gate, uint64_t gate_type) { - uint64_t rip = rreg(cpu->hvf_fd, HV_X86_RIP); + uint64_t rip = rreg(cpu->hvf->fd, HV_X86_RIP); if (!gate_valid || (gate_type != VMCS_INTR_T_HWEXCEPTION && gate_type != VMCS_INTR_T_HWINTR && gate_type != VMCS_INTR_T_NMI)) { - int ins_len = rvmcs(cpu->hvf_fd, VMCS_EXIT_INSTRUCTION_LENGTH); + int ins_len = rvmcs(cpu->hvf->fd, VMCS_EXIT_INSTRUCTION_LENGTH); macvm_set_rip(cpu, rip + ins_len); return; } @@ -XXX,XX +XXX,XX @@ void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int rea //ret = task_switch_16(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc); VM_PANIC("task_switch_16"); - macvm_set_cr0(cpu->hvf_fd, rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0) | CR0_TS); + macvm_set_cr0(cpu->hvf->fd, rvmcs(cpu->hvf->fd, VMCS_GUEST_CR0) | CR0_TS); x86_segment_descriptor_to_vmx(cpu, tss_sel, &next_tss_desc, &vmx_seg); vmx_write_segment_descriptor(cpu, &vmx_seg, R_TR); store_regs(cpu); - hv_vcpu_invalidate_tlb(cpu->hvf_fd); - hv_vcpu_flush(cpu->hvf_fd); + hv_vcpu_invalidate_tlb(cpu->hvf->fd); + hv_vcpu_flush(cpu->hvf->fd); } diff --git a/target/i386/hvf/x86hvf.c b/target/i386/hvf/x86hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86hvf.c +++ b/target/i386/hvf/x86hvf.c @@ -XXX,XX +XXX,XX @@ void hvf_put_xsave(CPUState *cpu_state) x86_cpu_xsave_all_areas(X86_CPU(cpu_state), xsave); - if (hv_vcpu_write_fpstate(cpu_state->hvf_fd, (void*)xsave, 4096)) { + if (hv_vcpu_write_fpstate(cpu_state->hvf->fd, (void*)xsave, 4096)) { abort(); } } @@ -XXX,XX +XXX,XX @@ void hvf_put_segments(CPUState *cpu_state) CPUX86State *env = &X86_CPU(cpu_state)->env; struct vmx_segment seg; - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_IDTR_LIMIT, env->idt.limit); - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_IDTR_BASE, env->idt.base); + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_IDTR_LIMIT, env->idt.limit); + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_IDTR_BASE, env->idt.base); - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_GDTR_LIMIT, env->gdt.limit); - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_GDTR_BASE, env->gdt.base); + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_GDTR_LIMIT, env->gdt.limit); + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_GDTR_BASE, env->gdt.base); - /* wvmcs(cpu_state->hvf_fd, VMCS_GUEST_CR2, env->cr[2]); */ - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_CR3, env->cr[3]); + /* wvmcs(cpu_state->hvf->fd, VMCS_GUEST_CR2, env->cr[2]); */ + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_CR3, env->cr[3]); vmx_update_tpr(cpu_state); - wvmcs(cpu_state->hvf_fd, VMCS_GUEST_IA32_EFER, env->efer); + wvmcs(cpu_state->hvf->fd, VMCS_GUEST_IA32_EFER, env->efer); - macvm_set_cr4(cpu_state->hvf_fd, env->cr[4]); - macvm_set_cr0(cpu_state->hvf_fd, env->cr[0]); + macvm_set_cr4(cpu_state->hvf->fd, env->cr[4]); + macvm_set_cr0(cpu_state->hvf->fd, env->cr[0]); hvf_set_segment(cpu_state, &seg, &env->segs[R_CS], false); vmx_write_segment_descriptor(cpu_state, &seg, R_CS); @@ -XXX,XX +XXX,XX @@ void hvf_put_segments(CPUState *cpu_state) hvf_set_segment(cpu_state, &seg, &env->ldt, false); vmx_write_segment_descriptor(cpu_state, &seg, R_LDTR); - hv_vcpu_flush(cpu_state->hvf_fd); + hv_vcpu_flush(cpu_state->hvf->fd); } void hvf_put_msrs(CPUState *cpu_state) { CPUX86State *env = &X86_CPU(cpu_state)->env; - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_CS, + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_CS, env->sysenter_cs); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_ESP, + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_ESP, env->sysenter_esp); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_EIP, + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_EIP, env->sysenter_eip); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_STAR, env->star); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_STAR, env->star); #ifdef TARGET_X86_64 - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_CSTAR, env->cstar); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_KERNELGSBASE, env->kernelgsbase); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_FMASK, env->fmask); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_LSTAR, env->lstar); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_CSTAR, env->cstar); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_KERNELGSBASE, env->kernelgsbase); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_FMASK, env->fmask); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_LSTAR, env->lstar); #endif - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_GSBASE, env->segs[R_GS].base); - hv_vcpu_write_msr(cpu_state->hvf_fd, MSR_FSBASE, env->segs[R_FS].base); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_GSBASE, env->segs[R_GS].base); + hv_vcpu_write_msr(cpu_state->hvf->fd, MSR_FSBASE, env->segs[R_FS].base); } @@ -XXX,XX +XXX,XX @@ void hvf_get_xsave(CPUState *cpu_state) xsave = X86_CPU(cpu_state)->env.xsave_buf; - if (hv_vcpu_read_fpstate(cpu_state->hvf_fd, (void*)xsave, 4096)) { + if (hv_vcpu_read_fpstate(cpu_state->hvf->fd, (void*)xsave, 4096)) { abort(); } @@ -XXX,XX +XXX,XX @@ void hvf_get_segments(CPUState *cpu_state) vmx_read_segment_descriptor(cpu_state, &seg, R_LDTR); hvf_get_segment(&env->ldt, &seg); - env->idt.limit = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_IDTR_LIMIT); - env->idt.base = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_IDTR_BASE); - env->gdt.limit = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_GDTR_LIMIT); - env->gdt.base = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_GDTR_BASE); + env->idt.limit = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_IDTR_LIMIT); + env->idt.base = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_IDTR_BASE); + env->gdt.limit = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_GDTR_LIMIT); + env->gdt.base = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_GDTR_BASE); - env->cr[0] = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_CR0); + env->cr[0] = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_CR0); env->cr[2] = 0; - env->cr[3] = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_CR3); - env->cr[4] = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_CR4); + env->cr[3] = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_CR3); + env->cr[4] = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_CR4); - env->efer = rvmcs(cpu_state->hvf_fd, VMCS_GUEST_IA32_EFER); + env->efer = rvmcs(cpu_state->hvf->fd, VMCS_GUEST_IA32_EFER); } void hvf_get_msrs(CPUState *cpu_state) @@ -XXX,XX +XXX,XX @@ void hvf_get_msrs(CPUState *cpu_state) CPUX86State *env = &X86_CPU(cpu_state)->env; uint64_t tmp; - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_CS, &tmp); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_CS, &tmp); env->sysenter_cs = tmp; - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_ESP, &tmp); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_ESP, &tmp); env->sysenter_esp = tmp; - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_IA32_SYSENTER_EIP, &tmp); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_IA32_SYSENTER_EIP, &tmp); env->sysenter_eip = tmp; - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_STAR, &env->star); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_STAR, &env->star); #ifdef TARGET_X86_64 - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_CSTAR, &env->cstar); - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_KERNELGSBASE, &env->kernelgsbase); - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_FMASK, &env->fmask); - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_LSTAR, &env->lstar); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_CSTAR, &env->cstar); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_KERNELGSBASE, &env->kernelgsbase); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_FMASK, &env->fmask); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_LSTAR, &env->lstar); #endif - hv_vcpu_read_msr(cpu_state->hvf_fd, MSR_IA32_APICBASE, &tmp); + hv_vcpu_read_msr(cpu_state->hvf->fd, MSR_IA32_APICBASE, &tmp); - env->tsc = rdtscp() + rvmcs(cpu_state->hvf_fd, VMCS_TSC_OFFSET); + env->tsc = rdtscp() + rvmcs(cpu_state->hvf->fd, VMCS_TSC_OFFSET); } int hvf_put_registers(CPUState *cpu_state) @@ -XXX,XX +XXX,XX @@ int hvf_put_registers(CPUState *cpu_state) X86CPU *x86cpu = X86_CPU(cpu_state); CPUX86State *env = &x86cpu->env; - wreg(cpu_state->hvf_fd, HV_X86_RAX, env->regs[R_EAX]); - wreg(cpu_state->hvf_fd, HV_X86_RBX, env->regs[R_EBX]); - wreg(cpu_state->hvf_fd, HV_X86_RCX, env->regs[R_ECX]); - wreg(cpu_state->hvf_fd, HV_X86_RDX, env->regs[R_EDX]); - wreg(cpu_state->hvf_fd, HV_X86_RBP, env->regs[R_EBP]); - wreg(cpu_state->hvf_fd, HV_X86_RSP, env->regs[R_ESP]); - wreg(cpu_state->hvf_fd, HV_X86_RSI, env->regs[R_ESI]); - wreg(cpu_state->hvf_fd, HV_X86_RDI, env->regs[R_EDI]); - wreg(cpu_state->hvf_fd, HV_X86_R8, env->regs[8]); - wreg(cpu_state->hvf_fd, HV_X86_R9, env->regs[9]); - wreg(cpu_state->hvf_fd, HV_X86_R10, env->regs[10]); - wreg(cpu_state->hvf_fd, HV_X86_R11, env->regs[11]); - wreg(cpu_state->hvf_fd, HV_X86_R12, env->regs[12]); - wreg(cpu_state->hvf_fd, HV_X86_R13, env->regs[13]); - wreg(cpu_state->hvf_fd, HV_X86_R14, env->regs[14]); - wreg(cpu_state->hvf_fd, HV_X86_R15, env->regs[15]); - wreg(cpu_state->hvf_fd, HV_X86_RFLAGS, env->eflags); - wreg(cpu_state->hvf_fd, HV_X86_RIP, env->eip); + wreg(cpu_state->hvf->fd, HV_X86_RAX, env->regs[R_EAX]); + wreg(cpu_state->hvf->fd, HV_X86_RBX, env->regs[R_EBX]); + wreg(cpu_state->hvf->fd, HV_X86_RCX, env->regs[R_ECX]); + wreg(cpu_state->hvf->fd, HV_X86_RDX, env->regs[R_EDX]); + wreg(cpu_state->hvf->fd, HV_X86_RBP, env->regs[R_EBP]); + wreg(cpu_state->hvf->fd, HV_X86_RSP, env->regs[R_ESP]); + wreg(cpu_state->hvf->fd, HV_X86_RSI, env->regs[R_ESI]); + wreg(cpu_state->hvf->fd, HV_X86_RDI, env->regs[R_EDI]); + wreg(cpu_state->hvf->fd, HV_X86_R8, env->regs[8]); + wreg(cpu_state->hvf->fd, HV_X86_R9, env->regs[9]); + wreg(cpu_state->hvf->fd, HV_X86_R10, env->regs[10]); + wreg(cpu_state->hvf->fd, HV_X86_R11, env->regs[11]); + wreg(cpu_state->hvf->fd, HV_X86_R12, env->regs[12]); + wreg(cpu_state->hvf->fd, HV_X86_R13, env->regs[13]); + wreg(cpu_state->hvf->fd, HV_X86_R14, env->regs[14]); + wreg(cpu_state->hvf->fd, HV_X86_R15, env->regs[15]); + wreg(cpu_state->hvf->fd, HV_X86_RFLAGS, env->eflags); + wreg(cpu_state->hvf->fd, HV_X86_RIP, env->eip); - wreg(cpu_state->hvf_fd, HV_X86_XCR0, env->xcr0); + wreg(cpu_state->hvf->fd, HV_X86_XCR0, env->xcr0); hvf_put_xsave(cpu_state); @@ -XXX,XX +XXX,XX @@ int hvf_put_registers(CPUState *cpu_state) hvf_put_msrs(cpu_state); - wreg(cpu_state->hvf_fd, HV_X86_DR0, env->dr[0]); - wreg(cpu_state->hvf_fd, HV_X86_DR1, env->dr[1]); - wreg(cpu_state->hvf_fd, HV_X86_DR2, env->dr[2]); - wreg(cpu_state->hvf_fd, HV_X86_DR3, env->dr[3]); - wreg(cpu_state->hvf_fd, HV_X86_DR4, env->dr[4]); - wreg(cpu_state->hvf_fd, HV_X86_DR5, env->dr[5]); - wreg(cpu_state->hvf_fd, HV_X86_DR6, env->dr[6]); - wreg(cpu_state->hvf_fd, HV_X86_DR7, env->dr[7]); + wreg(cpu_state->hvf->fd, HV_X86_DR0, env->dr[0]); + wreg(cpu_state->hvf->fd, HV_X86_DR1, env->dr[1]); + wreg(cpu_state->hvf->fd, HV_X86_DR2, env->dr[2]); + wreg(cpu_state->hvf->fd, HV_X86_DR3, env->dr[3]); + wreg(cpu_state->hvf->fd, HV_X86_DR4, env->dr[4]); + wreg(cpu_state->hvf->fd, HV_X86_DR5, env->dr[5]); + wreg(cpu_state->hvf->fd, HV_X86_DR6, env->dr[6]); + wreg(cpu_state->hvf->fd, HV_X86_DR7, env->dr[7]); return 0; } @@ -XXX,XX +XXX,XX @@ int hvf_get_registers(CPUState *cpu_state) X86CPU *x86cpu = X86_CPU(cpu_state); CPUX86State *env = &x86cpu->env; - env->regs[R_EAX] = rreg(cpu_state->hvf_fd, HV_X86_RAX); - env->regs[R_EBX] = rreg(cpu_state->hvf_fd, HV_X86_RBX); - env->regs[R_ECX] = rreg(cpu_state->hvf_fd, HV_X86_RCX); - env->regs[R_EDX] = rreg(cpu_state->hvf_fd, HV_X86_RDX); - env->regs[R_EBP] = rreg(cpu_state->hvf_fd, HV_X86_RBP); - env->regs[R_ESP] = rreg(cpu_state->hvf_fd, HV_X86_RSP); - env->regs[R_ESI] = rreg(cpu_state->hvf_fd, HV_X86_RSI); - env->regs[R_EDI] = rreg(cpu_state->hvf_fd, HV_X86_RDI); - env->regs[8] = rreg(cpu_state->hvf_fd, HV_X86_R8); - env->regs[9] = rreg(cpu_state->hvf_fd, HV_X86_R9); - env->regs[10] = rreg(cpu_state->hvf_fd, HV_X86_R10); - env->regs[11] = rreg(cpu_state->hvf_fd, HV_X86_R11); - env->regs[12] = rreg(cpu_state->hvf_fd, HV_X86_R12); - env->regs[13] = rreg(cpu_state->hvf_fd, HV_X86_R13); - env->regs[14] = rreg(cpu_state->hvf_fd, HV_X86_R14); - env->regs[15] = rreg(cpu_state->hvf_fd, HV_X86_R15); + env->regs[R_EAX] = rreg(cpu_state->hvf->fd, HV_X86_RAX); + env->regs[R_EBX] = rreg(cpu_state->hvf->fd, HV_X86_RBX); + env->regs[R_ECX] = rreg(cpu_state->hvf->fd, HV_X86_RCX); + env->regs[R_EDX] = rreg(cpu_state->hvf->fd, HV_X86_RDX); + env->regs[R_EBP] = rreg(cpu_state->hvf->fd, HV_X86_RBP); + env->regs[R_ESP] = rreg(cpu_state->hvf->fd, HV_X86_RSP); + env->regs[R_ESI] = rreg(cpu_state->hvf->fd, HV_X86_RSI); + env->regs[R_EDI] = rreg(cpu_state->hvf->fd, HV_X86_RDI); + env->regs[8] = rreg(cpu_state->hvf->fd, HV_X86_R8); + env->regs[9] = rreg(cpu_state->hvf->fd, HV_X86_R9); + env->regs[10] = rreg(cpu_state->hvf->fd, HV_X86_R10); + env->regs[11] = rreg(cpu_state->hvf->fd, HV_X86_R11); + env->regs[12] = rreg(cpu_state->hvf->fd, HV_X86_R12); + env->regs[13] = rreg(cpu_state->hvf->fd, HV_X86_R13); + env->regs[14] = rreg(cpu_state->hvf->fd, HV_X86_R14); + env->regs[15] = rreg(cpu_state->hvf->fd, HV_X86_R15); - env->eflags = rreg(cpu_state->hvf_fd, HV_X86_RFLAGS); - env->eip = rreg(cpu_state->hvf_fd, HV_X86_RIP); + env->eflags = rreg(cpu_state->hvf->fd, HV_X86_RFLAGS); + env->eip = rreg(cpu_state->hvf->fd, HV_X86_RIP); hvf_get_xsave(cpu_state); - env->xcr0 = rreg(cpu_state->hvf_fd, HV_X86_XCR0); + env->xcr0 = rreg(cpu_state->hvf->fd, HV_X86_XCR0); hvf_get_segments(cpu_state); hvf_get_msrs(cpu_state); - env->dr[0] = rreg(cpu_state->hvf_fd, HV_X86_DR0); - env->dr[1] = rreg(cpu_state->hvf_fd, HV_X86_DR1); - env->dr[2] = rreg(cpu_state->hvf_fd, HV_X86_DR2); - env->dr[3] = rreg(cpu_state->hvf_fd, HV_X86_DR3); - env->dr[4] = rreg(cpu_state->hvf_fd, HV_X86_DR4); - env->dr[5] = rreg(cpu_state->hvf_fd, HV_X86_DR5); - env->dr[6] = rreg(cpu_state->hvf_fd, HV_X86_DR6); - env->dr[7] = rreg(cpu_state->hvf_fd, HV_X86_DR7); + env->dr[0] = rreg(cpu_state->hvf->fd, HV_X86_DR0); + env->dr[1] = rreg(cpu_state->hvf->fd, HV_X86_DR1); + env->dr[2] = rreg(cpu_state->hvf->fd, HV_X86_DR2); + env->dr[3] = rreg(cpu_state->hvf->fd, HV_X86_DR3); + env->dr[4] = rreg(cpu_state->hvf->fd, HV_X86_DR4); + env->dr[5] = rreg(cpu_state->hvf->fd, HV_X86_DR5); + env->dr[6] = rreg(cpu_state->hvf->fd, HV_X86_DR6); + env->dr[7] = rreg(cpu_state->hvf->fd, HV_X86_DR7); x86_update_hflags(env); return 0; @@ -XXX,XX +XXX,XX @@ int hvf_get_registers(CPUState *cpu_state) static void vmx_set_int_window_exiting(CPUState *cpu) { uint64_t val; - val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); - wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val | + val = rvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS); + wvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS, val | VMCS_PRI_PROC_BASED_CTLS_INT_WINDOW_EXITING); } void vmx_clear_int_window_exiting(CPUState *cpu) { uint64_t val; - val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); - wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val & + val = rvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS); + wvmcs(cpu->hvf->fd, VMCS_PRI_PROC_BASED_CTLS, val & ~VMCS_PRI_PROC_BASED_CTLS_INT_WINDOW_EXITING); } @@ -XXX,XX +XXX,XX @@ bool hvf_inject_interrupts(CPUState *cpu_state) uint64_t info = 0; if (have_event) { info = vector | intr_type | VMCS_INTR_VALID; - uint64_t reason = rvmcs(cpu_state->hvf_fd, VMCS_EXIT_REASON); + uint64_t reason = rvmcs(cpu_state->hvf->fd, VMCS_EXIT_REASON); if (env->nmi_injected && reason != EXIT_REASON_TASK_SWITCH) { vmx_clear_nmi_blocking(cpu_state); } @@ -XXX,XX +XXX,XX @@ bool hvf_inject_interrupts(CPUState *cpu_state) info &= ~(1 << 12); /* clear undefined bit */ if (intr_type == VMCS_INTR_T_SWINTR || intr_type == VMCS_INTR_T_SWEXCEPTION) { - wvmcs(cpu_state->hvf_fd, VMCS_ENTRY_INST_LENGTH, env->ins_len); + wvmcs(cpu_state->hvf->fd, VMCS_ENTRY_INST_LENGTH, env->ins_len); } if (env->has_error_code) { - wvmcs(cpu_state->hvf_fd, VMCS_ENTRY_EXCEPTION_ERROR, + wvmcs(cpu_state->hvf->fd, VMCS_ENTRY_EXCEPTION_ERROR, env->error_code); /* Indicate that VMCS_ENTRY_EXCEPTION_ERROR is valid */ info |= VMCS_INTR_DEL_ERRCODE; } /*printf("reinject %lx err %d\n", info, err);*/ - wvmcs(cpu_state->hvf_fd, VMCS_ENTRY_INTR_INFO, info); + wvmcs(cpu_state->hvf->fd, VMCS_ENTRY_INTR_INFO, info); }; } @@ -XXX,XX +XXX,XX @@ bool hvf_inject_interrupts(CPUState *cpu_state) if (!(env->hflags2 & HF2_NMI_MASK) && !(info & VMCS_INTR_VALID)) { cpu_state->interrupt_request &= ~CPU_INTERRUPT_NMI; info = VMCS_INTR_VALID | VMCS_INTR_T_NMI | EXCP02_NMI; - wvmcs(cpu_state->hvf_fd, VMCS_ENTRY_INTR_INFO, info); + wvmcs(cpu_state->hvf->fd, VMCS_ENTRY_INTR_INFO, info); } else { vmx_set_nmi_window_exiting(cpu_state); } @@ -XXX,XX +XXX,XX @@ bool hvf_inject_interrupts(CPUState *cpu_state) int line = cpu_get_pic_interrupt(&x86cpu->env); cpu_state->interrupt_request &= ~CPU_INTERRUPT_HARD; if (line >= 0) { - wvmcs(cpu_state->hvf_fd, VMCS_ENTRY_INTR_INFO, line | + wvmcs(cpu_state->hvf->fd, VMCS_ENTRY_INTR_INFO, line | VMCS_INTR_VALID | VMCS_INTR_T_HWINTR); } } @@ -XXX,XX +XXX,XX @@ int hvf_process_events(CPUState *cpu_state) X86CPU *cpu = X86_CPU(cpu_state); CPUX86State *env = &cpu->env; - env->eflags = rreg(cpu_state->hvf_fd, HV_X86_RFLAGS); + env->eflags = rreg(cpu_state->hvf->fd, HV_X86_RFLAGS); if (cpu_state->interrupt_request & CPU_INTERRUPT_INIT) { cpu_synchronize_state(cpu_state); -- 2.20.1 From: Alexander Graf <agraf@csgraf.de> The hooks we have that call us after reset, init and loadvm really all just want to say "The reference of all register state is in the QEMU vcpu struct, please push it". We already have a working pushing mechanism though called cpu->vcpu_dirty, so we can just reuse that for all of the above, syncing state properly the next time we actually execute a vCPU. This fixes PSCI resets on ARM, as they modify CPU state even after the post init call has completed, but before we execute the vCPU again. To also make the scheme work for x86, we have to make sure we don't move stale eflags into our env when the vcpu state is dirty. Signed-off-by: Alexander Graf <agraf@csgraf.de> Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Tested-by: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Sergio Lopez <slp@redhat.com> Message-id: 20210519202253.76782-13-agraf@csgraf.de Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- accel/hvf/hvf-accel-ops.c | 27 +++++++-------------------- target/i386/hvf/x86hvf.c | 5 ++++- 2 files changed, 11 insertions(+), 21 deletions(-) diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index XXXXXXX..XXXXXXX 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -XXX,XX +XXX,XX @@ static void hvf_cpu_synchronize_state(CPUState *cpu) } } -static void do_hvf_cpu_synchronize_post_reset(CPUState *cpu, - run_on_cpu_data arg) +static void do_hvf_cpu_synchronize_set_dirty(CPUState *cpu, + run_on_cpu_data arg) { - hvf_put_registers(cpu); - cpu->vcpu_dirty = false; + /* QEMU state is the reference, push it to HVF now and on next entry */ + cpu->vcpu_dirty = true; } static void hvf_cpu_synchronize_post_reset(CPUState *cpu) { - run_on_cpu(cpu, do_hvf_cpu_synchronize_post_reset, RUN_ON_CPU_NULL); -} - -static void do_hvf_cpu_synchronize_post_init(CPUState *cpu, - run_on_cpu_data arg) -{ - hvf_put_registers(cpu); - cpu->vcpu_dirty = false; + run_on_cpu(cpu, do_hvf_cpu_synchronize_set_dirty, RUN_ON_CPU_NULL); } static void hvf_cpu_synchronize_post_init(CPUState *cpu) { - run_on_cpu(cpu, do_hvf_cpu_synchronize_post_init, RUN_ON_CPU_NULL); -} - -static void do_hvf_cpu_synchronize_pre_loadvm(CPUState *cpu, - run_on_cpu_data arg) -{ - cpu->vcpu_dirty = true; + run_on_cpu(cpu, do_hvf_cpu_synchronize_set_dirty, RUN_ON_CPU_NULL); } static void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu) { - run_on_cpu(cpu, do_hvf_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL); + run_on_cpu(cpu, do_hvf_cpu_synchronize_set_dirty, RUN_ON_CPU_NULL); } static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on) diff --git a/target/i386/hvf/x86hvf.c b/target/i386/hvf/x86hvf.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/hvf/x86hvf.c +++ b/target/i386/hvf/x86hvf.c @@ -XXX,XX +XXX,XX @@ int hvf_process_events(CPUState *cpu_state) X86CPU *cpu = X86_CPU(cpu_state); CPUX86State *env = &cpu->env; - env->eflags = rreg(cpu_state->hvf->fd, HV_X86_RFLAGS); + if (!cpu_state->vcpu_dirty) { + /* light weight sync for CPU_INTERRUPT_HARD and IF_MASK */ + env->eflags = rreg(cpu_state->hvf->fd, HV_X86_RFLAGS); + } if (cpu_state->interrupt_request & CPU_INTERRUPT_INIT) { cpu_synchronize_state(cpu_state); -- 2.20.1 Coverity notes that we don't check for dup2() failing. Add some assertions so that if it does ever happen we get some indication. (This is similar to how we handle other "don't expect this syscall to fail" checks in this test code.) Fixes: Coverity CID 1432346 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Message-id: 20210525134458.6675-2-peter.maydell@linaro.org --- tests/qtest/bios-tables-test.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/bios-tables-test.c +++ b/tests/qtest/bios-tables-test.c @@ -XXX,XX +XXX,XX @@ static void test_acpi_asl(test_data *data) exp_sdt->asl_file, sdt->asl_file); int out = dup(STDOUT_FILENO); int ret G_GNUC_UNUSED; + int dupret; - dup2(STDERR_FILENO, STDOUT_FILENO); + g_assert(out >= 0); + dupret = dup2(STDERR_FILENO, STDOUT_FILENO); + g_assert(dupret >= 0); ret = system(diff) ; - dup2(out, STDOUT_FILENO); + dupret = dup2(out, STDOUT_FILENO); + g_assert(dupret >= 0); close(out); g_free(diff); } -- 2.20.1 The e1000e_send_verify() test calls qemu_recv() but doesn't check that the call succeeded, which annoys Coverity. Add an explicit test check for the length of the data. (This is a test check, not a "we assume this syscall always succeeds", so we use g_assert_cmpint() rather than g_assert().) Fixes: Coverity CID 1432324 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Message-id: 20210525134458.6675-3-peter.maydell@linaro.org --- tests/qtest/e1000e-test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tests/qtest/e1000e-test.c b/tests/qtest/e1000e-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/e1000e-test.c +++ b/tests/qtest/e1000e-test.c @@ -XXX,XX +XXX,XX @@ static void e1000e_send_verify(QE1000E *d, int *test_sockets, QGuestAllocator *a /* Check data sent to the backend */ ret = qemu_recv(test_sockets[0], &recv_len, sizeof(recv_len), 0); g_assert_cmpint(ret, == , sizeof(recv_len)); - qemu_recv(test_sockets[0], buffer, 64, 0); + ret = qemu_recv(test_sockets[0], buffer, 64, 0); + g_assert_cmpint(ret, >=, 5); g_assert_cmpstr(buffer, == , "TEST"); /* Free test data buffer */ -- 2.20.1 Coverity notices that the checks against mkstemp() failing in create_qcow2_with_mbr() are wrong: mkstemp returns -1 on failure but the check is just "g_assert(fd)". Fix to use "g_assert(fd >= 0)", matching the correct check in create_test_img(). Fixes: Coverity CID 1432274 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Message-id: 20210525134458.6675-4-peter.maydell@linaro.org --- tests/qtest/hd-geo-test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/qtest/hd-geo-test.c b/tests/qtest/hd-geo-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/hd-geo-test.c +++ b/tests/qtest/hd-geo-test.c @@ -XXX,XX +XXX,XX @@ static char *create_qcow2_with_mbr(MBRpartitions mbr, uint64_t sectors) } fd = mkstemp(raw_path); - g_assert(fd); + g_assert(fd >= 0); close(fd); fd = open(raw_path, O_WRONLY); @@ -XXX,XX +XXX,XX @@ static char *create_qcow2_with_mbr(MBRpartitions mbr, uint64_t sectors) close(fd); fd = mkstemp(qcow2_path); - g_assert(fd); + g_assert(fd >= 0); close(fd); qemu_img_path = getenv("QTEST_QEMU_IMG"); -- 2.20.1 Coverity points out that we calculate a 64-bit value using 32-bit arithmetic; add the cast to force the multiply to be done as 64-bits. (The overflow will never happen with the current test data.) Fixes: Coverity CID 1432320 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Message-id: 20210525134458.6675-5-peter.maydell@linaro.org --- tests/qtest/pflash-cfi02-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qtest/pflash-cfi02-test.c b/tests/qtest/pflash-cfi02-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/pflash-cfi02-test.c +++ b/tests/qtest/pflash-cfi02-test.c @@ -XXX,XX +XXX,XX @@ static void test_geometry(const void *opaque) for (int region = 0; region < nb_erase_regions; ++region) { for (uint32_t i = 0; i < c->nb_blocs[region]; ++i) { - uint64_t byte_addr = i * c->sector_len[region]; + uint64_t byte_addr = (uint64_t)i * c->sector_len[region]; g_assert_cmphex(flash_read(c, byte_addr), ==, bank_mask(c)); } } -- 2.20.1 Coverity points out that in tpm_test_swtpm_migration_test() we assume that src_tpm_addr and dst_tpm_addr are non-NULL (we pass them to tpm_util_migration_start_qemu() which will unconditionally dereference them) but then later explicitly check them for NULL. Remove the pointless checks. Fixes: Coverity CID 1432367, 1432359 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Message-id: 20210525134458.6675-6-peter.maydell@linaro.org --- tests/qtest/tpm-tests.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/tests/qtest/tpm-tests.c b/tests/qtest/tpm-tests.c index XXXXXXX..XXXXXXX 100644 --- a/tests/qtest/tpm-tests.c +++ b/tests/qtest/tpm-tests.c @@ -XXX,XX +XXX,XX @@ void tpm_test_swtpm_migration_test(const char *src_tpm_path, qtest_quit(src_qemu); tpm_util_swtpm_kill(dst_tpm_pid); - if (dst_tpm_addr) { - g_unlink(dst_tpm_addr->u.q_unix.path); - qapi_free_SocketAddress(dst_tpm_addr); - } + g_unlink(dst_tpm_addr->u.q_unix.path); + qapi_free_SocketAddress(dst_tpm_addr); tpm_util_swtpm_kill(src_tpm_pid); - if (src_tpm_addr) { - g_unlink(src_tpm_addr->u.q_unix.path); - qapi_free_SocketAddress(src_tpm_addr); - } + g_unlink(src_tpm_addr->u.q_unix.path); + qapi_free_SocketAddress(src_tpm_addr); } -- 2.20.1 Coverity complains that we don't check for failures from dup() and mkstemp(); add asserts that these syscalls succeeded. Fixes: Coverity CID 1432516, 1432574 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20210525134458.6675-7-peter.maydell@linaro.org --- tests/unit/test-vmstate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tests/unit/test-vmstate.c b/tests/unit/test-vmstate.c index XXXXXXX..XXXXXXX 100644 --- a/tests/unit/test-vmstate.c +++ b/tests/unit/test-vmstate.c @@ -XXX,XX +XXX,XX @@ static int temp_fd; /* Duplicate temp_fd and seek to the beginning of the file */ static QEMUFile *open_test_file(bool write) { - int fd = dup(temp_fd); + int fd; QIOChannel *ioc; QEMUFile *f; + fd = dup(temp_fd); + g_assert(fd >= 0); lseek(fd, 0, SEEK_SET); if (write) { g_assert_cmpint(ftruncate(fd, 0), ==, 0); @@ -XXX,XX +XXX,XX @@ int main(int argc, char **argv) g_autofree char *temp_file = g_strdup_printf("%s/vmst.test.XXXXXX", g_get_tmp_dir()); temp_fd = mkstemp(temp_file); + g_assert(temp_fd >= 0); module_call_init(MODULE_INIT_QOM); -- 2.20.1 First arm pullreq of the cycle; this is mostly my softfloat NaN handling series. (Lots more in my to-review queue, but I don't like pullreqs growing too close to a hundred patches at a time :-)) thanks -- PMM The following changes since commit 97f2796a3736ed37a1b85dc1c76a6c45b829dd17: Open 10.0 development tree (2024-12-10 17:41:17 +0000) are available in the Git repository at: https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20241211 for you to fetch changes up to 1abe28d519239eea5cf9620bb13149423e5665f8: MAINTAINERS: Add correct email address for Vikram Garhwal (2024-12-11 15:31:09 +0000) ---------------------------------------------------------------- target-arm queue: * hw/net/lan9118: Extract PHY model, reuse with imx_fec, fix bugs * fpu: Make muladd NaN handling runtime-selected, not compile-time * fpu: Make default NaN pattern runtime-selected, not compile-time * fpu: Minor NaN-related cleanups * MAINTAINERS: email address updates ---------------------------------------------------------------- Bernhard Beschow (5): hw/net/lan9118: Extract lan9118_phy hw/net/lan9118_phy: Reuse in imx_fec and consolidate implementations hw/net/lan9118_phy: Fix off-by-one error in MII_ANLPAR register hw/net/lan9118_phy: Reuse MII constants hw/net/lan9118_phy: Add missing 100 mbps full duplex advertisement Leif Lindholm (1): MAINTAINERS: update email address for Leif Lindholm Peter Maydell (54): fpu: handle raising Invalid for infzero in pick_nan_muladd fpu: Check for default_nan_mode before calling pickNaNMulAdd softfloat: Allow runtime choice of inf * 0 + NaN result tests/fp: Explicitly set inf-zero-nan rule target/arm: Set FloatInfZeroNaNRule explicitly target/s390: Set FloatInfZeroNaNRule explicitly target/ppc: Set FloatInfZeroNaNRule explicitly target/mips: Set FloatInfZeroNaNRule explicitly target/sparc: Set FloatInfZeroNaNRule explicitly target/xtensa: Set FloatInfZeroNaNRule explicitly target/x86: Set FloatInfZeroNaNRule explicitly target/loongarch: Set FloatInfZeroNaNRule explicitly target/hppa: Set FloatInfZeroNaNRule explicitly softfloat: Pass have_snan to pickNaNMulAdd softfloat: Allow runtime choice of NaN propagation for muladd tests/fp: Explicitly set 3-NaN propagation rule target/arm: Set Float3NaNPropRule explicitly target/loongarch: Set Float3NaNPropRule explicitly target/ppc: Set Float3NaNPropRule explicitly target/s390x: Set Float3NaNPropRule explicitly target/sparc: Set Float3NaNPropRule explicitly target/mips: Set Float3NaNPropRule explicitly target/xtensa: Set Float3NaNPropRule explicitly target/i386: Set Float3NaNPropRule explicitly target/hppa: Set Float3NaNPropRule explicitly fpu: Remove use_first_nan field from float_status target/m68k: Don't pass NULL float_status to floatx80_default_nan() softfloat: Create floatx80 default NaN from parts64_default_nan target/loongarch: Use normal float_status in fclass_s and fclass_d helpers target/m68k: In frem helper, initialize local float_status from env->fp_status target/m68k: Init local float_status from env fp_status in gdb get/set reg target/sparc: Initialize local scratch float_status from env->fp_status target/ppc: Use env->fp_status in helper_compute_fprf functions fpu: Allow runtime choice of default NaN value tests/fp: Set default NaN pattern explicitly target/microblaze: Set default NaN pattern explicitly target/i386: Set default NaN pattern explicitly target/hppa: Set default NaN pattern explicitly target/alpha: Set default NaN pattern explicitly target/arm: Set default NaN pattern explicitly target/loongarch: Set default NaN pattern explicitly target/m68k: Set default NaN pattern explicitly target/mips: Set default NaN pattern explicitly target/openrisc: Set default NaN pattern explicitly target/ppc: Set default NaN pattern explicitly target/sh4: Set default NaN pattern explicitly target/rx: Set default NaN pattern explicitly target/s390x: Set default NaN pattern explicitly target/sparc: Set default NaN pattern explicitly target/xtensa: Set default NaN pattern explicitly target/hexagon: Set default NaN pattern explicitly target/riscv: Set default NaN pattern explicitly target/tricore: Set default NaN pattern explicitly fpu: Remove default handling for dnan_pattern Richard Henderson (11): target/arm: Copy entire float_status in is_ebf softfloat: Inline pickNaNMulAdd softfloat: Use goto for default nan case in pick_nan_muladd softfloat: Remove which from parts_pick_nan_muladd softfloat: Pad array size in pick_nan_muladd softfloat: Move propagateFloatx80NaN to softfloat.c softfloat: Use parts_pick_nan in propagateFloatx80NaN softfloat: Inline pickNaN softfloat: Share code between parts_pick_nan cases softfloat: Sink frac_cmp in parts_pick_nan until needed softfloat: Replace WHICH with RET in parts_pick_nan Vikram Garhwal (1): MAINTAINERS: Add correct email address for Vikram Garhwal MAINTAINERS | 4 +- include/fpu/softfloat-helpers.h | 38 +++- include/fpu/softfloat-types.h | 89 +++++++- include/hw/net/imx_fec.h | 9 +- include/hw/net/lan9118_phy.h | 37 ++++ include/hw/net/mii.h | 6 + target/mips/fpu_helper.h | 20 ++ target/sparc/helper.h | 4 +- fpu/softfloat.c | 19 ++ hw/net/imx_fec.c | 146 ++------------ hw/net/lan9118.c | 137 ++----------- hw/net/lan9118_phy.c | 222 ++++++++++++++++++++ linux-user/arm/nwfpe/fpa11.c | 5 + target/alpha/cpu.c | 2 + target/arm/cpu.c | 10 + target/arm/tcg/vec_helper.c | 20 +- target/hexagon/cpu.c | 2 + target/hppa/fpu_helper.c | 12 ++ target/i386/tcg/fpu_helper.c | 12 ++ target/loongarch/tcg/fpu_helper.c | 14 +- target/m68k/cpu.c | 14 +- target/m68k/fpu_helper.c | 6 +- target/m68k/helper.c | 6 +- target/microblaze/cpu.c | 2 + target/mips/msa.c | 10 + target/openrisc/cpu.c | 2 + target/ppc/cpu_init.c | 19 ++ target/ppc/fpu_helper.c | 3 +- target/riscv/cpu.c | 2 + target/rx/cpu.c | 2 + target/s390x/cpu.c | 5 + target/sh4/cpu.c | 2 + target/sparc/cpu.c | 6 + target/sparc/fop_helper.c | 8 +- target/sparc/translate.c | 4 +- target/tricore/helper.c | 2 + target/xtensa/cpu.c | 4 + target/xtensa/fpu_helper.c | 3 +- tests/fp/fp-bench.c | 7 + tests/fp/fp-test-log2.c | 1 + tests/fp/fp-test.c | 7 + fpu/softfloat-parts.c.inc | 152 +++++++++++--- fpu/softfloat-specialize.c.inc | 412 ++------------------------------------ .mailmap | 5 +- hw/net/Kconfig | 5 + hw/net/meson.build | 1 + hw/net/trace-events | 10 +- 47 files changed, 778 insertions(+), 730 deletions(-) create mode 100644 include/hw/net/lan9118_phy.h create mode 100644 hw/net/lan9118_phy.c From: Bernhard Beschow <shentey@gmail.com> A very similar implementation of the same device exists in imx_fec. Prepare for a common implementation by extracting a device model into its own files. Some migration state has been moved into the new device model which breaks migration compatibility for the following machines: * smdkc210 * realview-* * vexpress-* * kzm * mps2-* While breaking migration ABI, fix the size of the MII registers to be 16 bit, as defined by IEEE 802.3u. Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241102125724.532843-2-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/net/lan9118_phy.h | 37 ++++++++ hw/net/lan9118.c | 137 +++++----------------------- hw/net/lan9118_phy.c | 169 +++++++++++++++++++++++++++++++++++ hw/net/Kconfig | 4 + hw/net/meson.build | 1 + 5 files changed, 233 insertions(+), 115 deletions(-) create mode 100644 include/hw/net/lan9118_phy.h create mode 100644 hw/net/lan9118_phy.c diff --git a/include/hw/net/lan9118_phy.h b/include/hw/net/lan9118_phy.h new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/include/hw/net/lan9118_phy.h @@ -XXX,XX +XXX,XX @@ +/* + * SMSC LAN9118 PHY emulation + * + * Copyright (c) 2009 CodeSourcery, LLC. + * Written by Paul Brook + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef HW_NET_LAN9118_PHY_H +#define HW_NET_LAN9118_PHY_H + +#include "qom/object.h" +#include "hw/sysbus.h" + +#define TYPE_LAN9118_PHY "lan9118-phy" +OBJECT_DECLARE_SIMPLE_TYPE(Lan9118PhyState, LAN9118_PHY) + +typedef struct Lan9118PhyState { + SysBusDevice parent_obj; + + uint16_t status; + uint16_t control; + uint16_t advertise; + uint16_t ints; + uint16_t int_mask; + qemu_irq irq; + bool link_down; +} Lan9118PhyState; + +void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down); +void lan9118_phy_reset(Lan9118PhyState *s); +uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg); +void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val); + +#endif diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/lan9118.c +++ b/hw/net/lan9118.c @@ -XXX,XX +XXX,XX @@ #include "net/net.h" #include "net/eth.h" #include "hw/irq.h" +#include "hw/net/lan9118_phy.h" #include "hw/net/lan9118.h" #include "hw/ptimer.h" #include "hw/qdev-properties.h" @@ -XXX,XX +XXX,XX @@ do { printf("lan9118: " fmt , ## __VA_ARGS__); } while (0) #define MAC_CR_RXEN 0x00000004 #define MAC_CR_RESERVED 0x7f404213 -#define PHY_INT_ENERGYON 0x80 -#define PHY_INT_AUTONEG_COMPLETE 0x40 -#define PHY_INT_FAULT 0x20 -#define PHY_INT_DOWN 0x10 -#define PHY_INT_AUTONEG_LP 0x08 -#define PHY_INT_PARFAULT 0x04 -#define PHY_INT_AUTONEG_PAGE 0x02 - #define GPT_TIMER_EN 0x20000000 /* @@ -XXX,XX +XXX,XX @@ struct lan9118_state { uint32_t mac_mii_data; uint32_t mac_flow; - uint32_t phy_status; - uint32_t phy_control; - uint32_t phy_advertise; - uint32_t phy_int; - uint32_t phy_int_mask; + Lan9118PhyState mii; + IRQState mii_irq; int32_t eeprom_writable; uint8_t eeprom[128]; @@ -XXX,XX +XXX,XX @@ struct lan9118_state { static const VMStateDescription vmstate_lan9118 = { .name = "lan9118", - .version_id = 2, - .minimum_version_id = 1, + .version_id = 3, + .minimum_version_id = 3, .fields = (const VMStateField[]) { VMSTATE_PTIMER(timer, lan9118_state), VMSTATE_UINT32(irq_cfg, lan9118_state), @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_lan9118 = { VMSTATE_UINT32(mac_mii_acc, lan9118_state), VMSTATE_UINT32(mac_mii_data, lan9118_state), VMSTATE_UINT32(mac_flow, lan9118_state), - VMSTATE_UINT32(phy_status, lan9118_state), - VMSTATE_UINT32(phy_control, lan9118_state), - VMSTATE_UINT32(phy_advertise, lan9118_state), - VMSTATE_UINT32(phy_int, lan9118_state), - VMSTATE_UINT32(phy_int_mask, lan9118_state), VMSTATE_INT32(eeprom_writable, lan9118_state), VMSTATE_UINT8_ARRAY(eeprom, lan9118_state, 128), VMSTATE_INT32(tx_fifo_size, lan9118_state), @@ -XXX,XX +XXX,XX @@ static void lan9118_reload_eeprom(lan9118_state *s) lan9118_mac_changed(s); } -static void phy_update_irq(lan9118_state *s) +static void lan9118_update_irq(void *opaque, int n, int level) { - if (s->phy_int & s->phy_int_mask) { + lan9118_state *s = opaque; + + if (level) { s->int_sts |= PHY_INT; } else { s->int_sts &= ~PHY_INT; @@ -XXX,XX +XXX,XX @@ static void phy_update_irq(lan9118_state *s) lan9118_update(s); } -static void phy_update_link(lan9118_state *s) -{ - /* Autonegotiation status mirrors link status. */ - if (qemu_get_queue(s->nic)->link_down) { - s->phy_status &= ~0x0024; - s->phy_int |= PHY_INT_DOWN; - } else { - s->phy_status |= 0x0024; - s->phy_int |= PHY_INT_ENERGYON; - s->phy_int |= PHY_INT_AUTONEG_COMPLETE; - } - phy_update_irq(s); -} - static void lan9118_set_link(NetClientState *nc) { - phy_update_link(qemu_get_nic_opaque(nc)); -} - -static void phy_reset(lan9118_state *s) -{ - s->phy_status = 0x7809; - s->phy_control = 0x3000; - s->phy_advertise = 0x01e1; - s->phy_int_mask = 0; - s->phy_int = 0; - phy_update_link(s); + lan9118_phy_update_link(&LAN9118(qemu_get_nic_opaque(nc))->mii, + nc->link_down); } static void lan9118_reset(DeviceState *d) @@ -XXX,XX +XXX,XX @@ static void lan9118_reset(DeviceState *d) s->read_word_n = 0; s->write_word_n = 0; - phy_reset(s); - s->eeprom_writable = 0; lan9118_reload_eeprom(s); } @@ -XXX,XX +XXX,XX @@ static void do_tx_packet(lan9118_state *s) uint32_t status; /* FIXME: Honor TX disable, and allow queueing of packets. */ - if (s->phy_control & 0x4000) { + if (s->mii.control & 0x4000) { /* This assumes the receive routine doesn't touch the VLANClient. */ qemu_receive_packet(qemu_get_queue(s->nic), s->txp->data, s->txp->len); } else { @@ -XXX,XX +XXX,XX @@ static void tx_fifo_push(lan9118_state *s, uint32_t val) } } -static uint32_t do_phy_read(lan9118_state *s, int reg) -{ - uint32_t val; - - switch (reg) { - case 0: /* Basic Control */ - return s->phy_control; - case 1: /* Basic Status */ - return s->phy_status; - case 2: /* ID1 */ - return 0x0007; - case 3: /* ID2 */ - return 0xc0d1; - case 4: /* Auto-neg advertisement */ - return s->phy_advertise; - case 5: /* Auto-neg Link Partner Ability */ - return 0x0f71; - case 6: /* Auto-neg Expansion */ - return 1; - /* TODO 17, 18, 27, 29, 30, 31 */ - case 29: /* Interrupt source. */ - val = s->phy_int; - s->phy_int = 0; - phy_update_irq(s); - return val; - case 30: /* Interrupt mask */ - return s->phy_int_mask; - default: - qemu_log_mask(LOG_GUEST_ERROR, - "do_phy_read: PHY read reg %d\n", reg); - return 0; - } -} - -static void do_phy_write(lan9118_state *s, int reg, uint32_t val) -{ - switch (reg) { - case 0: /* Basic Control */ - if (val & 0x8000) { - phy_reset(s); - break; - } - s->phy_control = val & 0x7980; - /* Complete autonegotiation immediately. */ - if (val & 0x1000) { - s->phy_status |= 0x0020; - } - break; - case 4: /* Auto-neg advertisement */ - s->phy_advertise = (val & 0x2d7f) | 0x80; - break; - /* TODO 17, 18, 27, 31 */ - case 30: /* Interrupt mask */ - s->phy_int_mask = val & 0xff; - phy_update_irq(s); - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, - "do_phy_write: PHY write reg %d = 0x%04x\n", reg, val); - } -} - static void do_mac_write(lan9118_state *s, int reg, uint32_t val) { switch (reg) { @@ -XXX,XX +XXX,XX @@ static void do_mac_write(lan9118_state *s, int reg, uint32_t val) if (val & 2) { DPRINTF("PHY write %d = 0x%04x\n", (val >> 6) & 0x1f, s->mac_mii_data); - do_phy_write(s, (val >> 6) & 0x1f, s->mac_mii_data); + lan9118_phy_write(&s->mii, (val >> 6) & 0x1f, s->mac_mii_data); } else { - s->mac_mii_data = do_phy_read(s, (val >> 6) & 0x1f); + s->mac_mii_data = lan9118_phy_read(&s->mii, (val >> 6) & 0x1f); DPRINTF("PHY read %d = 0x%04x\n", (val >> 6) & 0x1f, s->mac_mii_data); } @@ -XXX,XX +XXX,XX @@ static void lan9118_writel(void *opaque, hwaddr offset, break; case CSR_PMT_CTRL: if (val & 0x400) { - phy_reset(s); + lan9118_phy_reset(&s->mii); } s->pmt_ctrl &= ~0x34e; s->pmt_ctrl |= (val & 0x34e); @@ -XXX,XX +XXX,XX @@ static void lan9118_realize(DeviceState *dev, Error **errp) const MemoryRegionOps *mem_ops = s->mode_16bit ? &lan9118_16bit_mem_ops : &lan9118_mem_ops; + qemu_init_irq(&s->mii_irq, lan9118_update_irq, s, 0); + object_initialize_child(OBJECT(s), "mii", &s->mii, TYPE_LAN9118_PHY); + if (!sysbus_realize_and_unref(SYS_BUS_DEVICE(&s->mii), errp)) { + return; + } + qdev_connect_gpio_out(DEVICE(&s->mii), 0, &s->mii_irq); + memory_region_init_io(&s->mmio, OBJECT(dev), mem_ops, s, "lan9118-mmio", 0x100); sysbus_init_mmio(sbd, &s->mmio); diff --git a/hw/net/lan9118_phy.c b/hw/net/lan9118_phy.c new file mode 100644 index XXXXXXX..XXXXXXX --- /dev/null +++ b/hw/net/lan9118_phy.c @@ -XXX,XX +XXX,XX @@ +/* + * SMSC LAN9118 PHY emulation + * + * Copyright (c) 2009 CodeSourcery, LLC. + * Written by Paul Brook + * + * This code is licensed under the GNU GPL v2 + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "hw/net/lan9118_phy.h" +#include "hw/irq.h" +#include "hw/resettable.h" +#include "migration/vmstate.h" +#include "qemu/log.h" + +#define PHY_INT_ENERGYON (1 << 7) +#define PHY_INT_AUTONEG_COMPLETE (1 << 6) +#define PHY_INT_FAULT (1 << 5) +#define PHY_INT_DOWN (1 << 4) +#define PHY_INT_AUTONEG_LP (1 << 3) +#define PHY_INT_PARFAULT (1 << 2) +#define PHY_INT_AUTONEG_PAGE (1 << 1) + +static void lan9118_phy_update_irq(Lan9118PhyState *s) +{ + qemu_set_irq(s->irq, !!(s->ints & s->int_mask)); +} + +uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg) +{ + uint16_t val; + + switch (reg) { + case 0: /* Basic Control */ + return s->control; + case 1: /* Basic Status */ + return s->status; + case 2: /* ID1 */ + return 0x0007; + case 3: /* ID2 */ + return 0xc0d1; + case 4: /* Auto-neg advertisement */ + return s->advertise; + case 5: /* Auto-neg Link Partner Ability */ + return 0x0f71; + case 6: /* Auto-neg Expansion */ + return 1; + /* TODO 17, 18, 27, 29, 30, 31 */ + case 29: /* Interrupt source. */ + val = s->ints; + s->ints = 0; + lan9118_phy_update_irq(s); + return val; + case 30: /* Interrupt mask */ + return s->int_mask; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "lan9118_phy_read: PHY read reg %d\n", reg); + return 0; + } +} + +void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val) +{ + switch (reg) { + case 0: /* Basic Control */ + if (val & 0x8000) { + lan9118_phy_reset(s); + break; + } + s->control = val & 0x7980; + /* Complete autonegotiation immediately. */ + if (val & 0x1000) { + s->status |= 0x0020; + } + break; + case 4: /* Auto-neg advertisement */ + s->advertise = (val & 0x2d7f) | 0x80; + break; + /* TODO 17, 18, 27, 31 */ + case 30: /* Interrupt mask */ + s->int_mask = val & 0xff; + lan9118_phy_update_irq(s); + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, + "lan9118_phy_write: PHY write reg %d = 0x%04x\n", reg, val); + } +} + +void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down) +{ + s->link_down = link_down; + + /* Autonegotiation status mirrors link status. */ + if (link_down) { + s->status &= ~0x0024; + s->ints |= PHY_INT_DOWN; + } else { + s->status |= 0x0024; + s->ints |= PHY_INT_ENERGYON; + s->ints |= PHY_INT_AUTONEG_COMPLETE; + } + lan9118_phy_update_irq(s); +} + +void lan9118_phy_reset(Lan9118PhyState *s) +{ + s->control = 0x3000; + s->status = 0x7809; + s->advertise = 0x01e1; + s->int_mask = 0; + s->ints = 0; + lan9118_phy_update_link(s, s->link_down); +} + +static void lan9118_phy_reset_hold(Object *obj, ResetType type) +{ + Lan9118PhyState *s = LAN9118_PHY(obj); + + lan9118_phy_reset(s); +} + +static void lan9118_phy_init(Object *obj) +{ + Lan9118PhyState *s = LAN9118_PHY(obj); + + qdev_init_gpio_out(DEVICE(s), &s->irq, 1); +} + +static const VMStateDescription vmstate_lan9118_phy = { + .name = "lan9118-phy", + .version_id = 1, + .minimum_version_id = 1, + .fields = (const VMStateField[]) { + VMSTATE_UINT16(control, Lan9118PhyState), + VMSTATE_UINT16(status, Lan9118PhyState), + VMSTATE_UINT16(advertise, Lan9118PhyState), + VMSTATE_UINT16(ints, Lan9118PhyState), + VMSTATE_UINT16(int_mask, Lan9118PhyState), + VMSTATE_BOOL(link_down, Lan9118PhyState), + VMSTATE_END_OF_LIST() + } +}; + +static void lan9118_phy_class_init(ObjectClass *klass, void *data) +{ + ResettableClass *rc = RESETTABLE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + rc->phases.hold = lan9118_phy_reset_hold; + dc->vmsd = &vmstate_lan9118_phy; +} + +static const TypeInfo types[] = { + { + .name = TYPE_LAN9118_PHY, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(Lan9118PhyState), + .instance_init = lan9118_phy_init, + .class_init = lan9118_phy_class_init, + } +}; + +DEFINE_TYPES(types) diff --git a/hw/net/Kconfig b/hw/net/Kconfig index XXXXXXX..XXXXXXX 100644 --- a/hw/net/Kconfig +++ b/hw/net/Kconfig @@ -XXX,XX +XXX,XX @@ config VMXNET3_PCI config SMC91C111 bool +config LAN9118_PHY + bool + config LAN9118 bool + select LAN9118_PHY select PTIMER config NE2000_ISA diff --git a/hw/net/meson.build b/hw/net/meson.build index XXXXXXX..XXXXXXX 100644 --- a/hw/net/meson.build +++ b/hw/net/meson.build @@ -XXX,XX +XXX,XX @@ system_ss.add(when: 'CONFIG_VMXNET3_PCI', if_true: files('vmxnet3.c')) system_ss.add(when: 'CONFIG_SMC91C111', if_true: files('smc91c111.c')) system_ss.add(when: 'CONFIG_LAN9118', if_true: files('lan9118.c')) +system_ss.add(when: 'CONFIG_LAN9118_PHY', if_true: files('lan9118_phy.c')) system_ss.add(when: 'CONFIG_NE2000_ISA', if_true: files('ne2000-isa.c')) system_ss.add(when: 'CONFIG_OPENCORES_ETH', if_true: files('opencores_eth.c')) system_ss.add(when: 'CONFIG_XGMAC', if_true: files('xgmac.c')) -- 2.34.1 From: Bernhard Beschow <shentey@gmail.com> imx_fec models the same PHY as lan9118_phy. The code is almost the same with imx_fec having more logging and tracing. Merge these improvements into lan9118_phy and reuse in imx_fec to fix the code duplication. Some migration state how resides in the new device model which breaks migration compatibility for the following machines: * imx25-pdk * sabrelite * mcimx7d-sabre * mcimx6ul-evk Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241102125724.532843-3-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/net/imx_fec.h | 9 ++- hw/net/imx_fec.c | 146 ++++----------------------------------- hw/net/lan9118_phy.c | 82 ++++++++++++++++------ hw/net/Kconfig | 1 + hw/net/trace-events | 10 +-- 5 files changed, 85 insertions(+), 163 deletions(-) diff --git a/include/hw/net/imx_fec.h b/include/hw/net/imx_fec.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/net/imx_fec.h +++ b/include/hw/net/imx_fec.h @@ -XXX,XX +XXX,XX @@ OBJECT_DECLARE_SIMPLE_TYPE(IMXFECState, IMX_FEC) #define TYPE_IMX_ENET "imx.enet" #include "hw/sysbus.h" +#include "hw/net/lan9118_phy.h" +#include "hw/irq.h" #include "net/net.h" #define ENET_EIR 1 @@ -XXX,XX +XXX,XX @@ struct IMXFECState { uint32_t tx_descriptor[ENET_TX_RING_NUM]; uint32_t tx_ring_num; - uint32_t phy_status; - uint32_t phy_control; - uint32_t phy_advertise; - uint32_t phy_int; - uint32_t phy_int_mask; + Lan9118PhyState mii; + IRQState mii_irq; uint32_t phy_num; bool phy_connected; struct IMXFECState *phy_consumer; diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/imx_fec.c +++ b/hw/net/imx_fec.c @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_imx_eth_txdescs = { static const VMStateDescription vmstate_imx_eth = { .name = TYPE_IMX_FEC, - .version_id = 2, - .minimum_version_id = 2, + .version_id = 3, + .minimum_version_id = 3, .fields = (const VMStateField[]) { VMSTATE_UINT32_ARRAY(regs, IMXFECState, ENET_MAX), VMSTATE_UINT32(rx_descriptor, IMXFECState), VMSTATE_UINT32(tx_descriptor[0], IMXFECState), - VMSTATE_UINT32(phy_status, IMXFECState), - VMSTATE_UINT32(phy_control, IMXFECState), - VMSTATE_UINT32(phy_advertise, IMXFECState), - VMSTATE_UINT32(phy_int, IMXFECState), - VMSTATE_UINT32(phy_int_mask, IMXFECState), VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription * const []) { @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_imx_eth = { }, }; -#define PHY_INT_ENERGYON (1 << 7) -#define PHY_INT_AUTONEG_COMPLETE (1 << 6) -#define PHY_INT_FAULT (1 << 5) -#define PHY_INT_DOWN (1 << 4) -#define PHY_INT_AUTONEG_LP (1 << 3) -#define PHY_INT_PARFAULT (1 << 2) -#define PHY_INT_AUTONEG_PAGE (1 << 1) - static void imx_eth_update(IMXFECState *s); /* @@ -XXX,XX +XXX,XX @@ static void imx_eth_update(IMXFECState *s); * For now we don't handle any GPIO/interrupt line, so the OS will * have to poll for the PHY status. */ -static void imx_phy_update_irq(IMXFECState *s) +static void imx_phy_update_irq(void *opaque, int n, int level) { - imx_eth_update(s); -} - -static void imx_phy_update_link(IMXFECState *s) -{ - /* Autonegotiation status mirrors link status. */ - if (qemu_get_queue(s->nic)->link_down) { - trace_imx_phy_update_link("down"); - s->phy_status &= ~0x0024; - s->phy_int |= PHY_INT_DOWN; - } else { - trace_imx_phy_update_link("up"); - s->phy_status |= 0x0024; - s->phy_int |= PHY_INT_ENERGYON; - s->phy_int |= PHY_INT_AUTONEG_COMPLETE; - } - imx_phy_update_irq(s); + imx_eth_update(opaque); } static void imx_eth_set_link(NetClientState *nc) { - imx_phy_update_link(IMX_FEC(qemu_get_nic_opaque(nc))); -} - -static void imx_phy_reset(IMXFECState *s) -{ - trace_imx_phy_reset(); - - s->phy_status = 0x7809; - s->phy_control = 0x3000; - s->phy_advertise = 0x01e1; - s->phy_int_mask = 0; - s->phy_int = 0; - imx_phy_update_link(s); + lan9118_phy_update_link(&IMX_FEC(qemu_get_nic_opaque(nc))->mii, + nc->link_down); } static uint32_t imx_phy_read(IMXFECState *s, int reg) { - uint32_t val; uint32_t phy = reg / 32; if (!s->phy_connected) { @@ -XXX,XX +XXX,XX @@ static uint32_t imx_phy_read(IMXFECState *s, int reg) reg %= 32; - switch (reg) { - case 0: /* Basic Control */ - val = s->phy_control; - break; - case 1: /* Basic Status */ - val = s->phy_status; - break; - case 2: /* ID1 */ - val = 0x0007; - break; - case 3: /* ID2 */ - val = 0xc0d1; - break; - case 4: /* Auto-neg advertisement */ - val = s->phy_advertise; - break; - case 5: /* Auto-neg Link Partner Ability */ - val = 0x0f71; - break; - case 6: /* Auto-neg Expansion */ - val = 1; - break; - case 29: /* Interrupt source. */ - val = s->phy_int; - s->phy_int = 0; - imx_phy_update_irq(s); - break; - case 30: /* Interrupt mask */ - val = s->phy_int_mask; - break; - case 17: - case 18: - case 27: - case 31: - qemu_log_mask(LOG_UNIMP, "[%s.phy]%s: reg %d not implemented\n", - TYPE_IMX_FEC, __func__, reg); - val = 0; - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, "[%s.phy]%s: Bad address at offset %d\n", - TYPE_IMX_FEC, __func__, reg); - val = 0; - break; - } - - trace_imx_phy_read(val, phy, reg); - - return val; + return lan9118_phy_read(&s->mii, reg); } static void imx_phy_write(IMXFECState *s, int reg, uint32_t val) @@ -XXX,XX +XXX,XX @@ static void imx_phy_write(IMXFECState *s, int reg, uint32_t val) reg %= 32; - trace_imx_phy_write(val, phy, reg); - - switch (reg) { - case 0: /* Basic Control */ - if (val & 0x8000) { - imx_phy_reset(s); - } else { - s->phy_control = val & 0x7980; - /* Complete autonegotiation immediately. */ - if (val & 0x1000) { - s->phy_status |= 0x0020; - } - } - break; - case 4: /* Auto-neg advertisement */ - s->phy_advertise = (val & 0x2d7f) | 0x80; - break; - case 30: /* Interrupt mask */ - s->phy_int_mask = val & 0xff; - imx_phy_update_irq(s); - break; - case 17: - case 18: - case 27: - case 31: - qemu_log_mask(LOG_UNIMP, "[%s.phy)%s: reg %d not implemented\n", - TYPE_IMX_FEC, __func__, reg); - break; - default: - qemu_log_mask(LOG_GUEST_ERROR, "[%s.phy]%s: Bad address at offset %d\n", - TYPE_IMX_FEC, __func__, reg); - break; - } + lan9118_phy_write(&s->mii, reg, val); } static void imx_fec_read_bd(IMXFECBufDesc *bd, dma_addr_t addr) @@ -XXX,XX +XXX,XX @@ static void imx_eth_reset(DeviceState *d) s->rx_descriptor = 0; memset(s->tx_descriptor, 0, sizeof(s->tx_descriptor)); - - /* We also reset the PHY */ - imx_phy_reset(s); } static uint32_t imx_default_read(IMXFECState *s, uint32_t index) @@ -XXX,XX +XXX,XX @@ static void imx_eth_realize(DeviceState *dev, Error **errp) sysbus_init_irq(sbd, &s->irq[0]); sysbus_init_irq(sbd, &s->irq[1]); + qemu_init_irq(&s->mii_irq, imx_phy_update_irq, s, 0); + object_initialize_child(OBJECT(s), "mii", &s->mii, TYPE_LAN9118_PHY); + if (!sysbus_realize_and_unref(SYS_BUS_DEVICE(&s->mii), errp)) { + return; + } + qdev_connect_gpio_out(DEVICE(&s->mii), 0, &s->mii_irq); + qemu_macaddr_default_if_unset(&s->conf.macaddr); s->nic = qemu_new_nic(&imx_eth_net_info, &s->conf, diff --git a/hw/net/lan9118_phy.c b/hw/net/lan9118_phy.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/lan9118_phy.c +++ b/hw/net/lan9118_phy.c @@ -XXX,XX +XXX,XX @@ * Copyright (c) 2009 CodeSourcery, LLC. * Written by Paul Brook * + * Copyright (c) 2013 Jean-Christophe Dubois. <jcd@tribudubois.net> + * * This code is licensed under the GNU GPL v2 * * Contributions after 2012-01-13 are licensed under the terms of the @@ -XXX,XX +XXX,XX @@ #include "hw/resettable.h" #include "migration/vmstate.h" #include "qemu/log.h" +#include "trace.h" #define PHY_INT_ENERGYON (1 << 7) #define PHY_INT_AUTONEG_COMPLETE (1 << 6) @@ -XXX,XX +XXX,XX @@ uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg) switch (reg) { case 0: /* Basic Control */ - return s->control; + val = s->control; + break; case 1: /* Basic Status */ - return s->status; + val = s->status; + break; case 2: /* ID1 */ - return 0x0007; + val = 0x0007; + break; case 3: /* ID2 */ - return 0xc0d1; + val = 0xc0d1; + break; case 4: /* Auto-neg advertisement */ - return s->advertise; + val = s->advertise; + break; case 5: /* Auto-neg Link Partner Ability */ - return 0x0f71; + val = 0x0f71; + break; case 6: /* Auto-neg Expansion */ - return 1; - /* TODO 17, 18, 27, 29, 30, 31 */ + val = 1; + break; case 29: /* Interrupt source. */ val = s->ints; s->ints = 0; lan9118_phy_update_irq(s); - return val; + break; case 30: /* Interrupt mask */ - return s->int_mask; + val = s->int_mask; + break; + case 17: + case 18: + case 27: + case 31: + qemu_log_mask(LOG_UNIMP, "%s: reg %d not implemented\n", + __func__, reg); + val = 0; + break; default: - qemu_log_mask(LOG_GUEST_ERROR, - "lan9118_phy_read: PHY read reg %d\n", reg); - return 0; + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad address at offset %d\n", + __func__, reg); + val = 0; + break; } + + trace_lan9118_phy_read(val, reg); + + return val; } void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val) { + trace_lan9118_phy_write(val, reg); + switch (reg) { case 0: /* Basic Control */ if (val & 0x8000) { lan9118_phy_reset(s); - break; - } - s->control = val & 0x7980; - /* Complete autonegotiation immediately. */ - if (val & 0x1000) { - s->status |= 0x0020; + } else { + s->control = val & 0x7980; + /* Complete autonegotiation immediately. */ + if (val & 0x1000) { + s->status |= 0x0020; + } } break; case 4: /* Auto-neg advertisement */ s->advertise = (val & 0x2d7f) | 0x80; break; - /* TODO 17, 18, 27, 31 */ case 30: /* Interrupt mask */ s->int_mask = val & 0xff; lan9118_phy_update_irq(s); break; + case 17: + case 18: + case 27: + case 31: + qemu_log_mask(LOG_UNIMP, "%s: reg %d not implemented\n", + __func__, reg); + break; default: - qemu_log_mask(LOG_GUEST_ERROR, - "lan9118_phy_write: PHY write reg %d = 0x%04x\n", reg, val); + qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad address at offset %d\n", + __func__, reg); + break; } } @@ -XXX,XX +XXX,XX @@ void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down) /* Autonegotiation status mirrors link status. */ if (link_down) { + trace_lan9118_phy_update_link("down"); s->status &= ~0x0024; s->ints |= PHY_INT_DOWN; } else { + trace_lan9118_phy_update_link("up"); s->status |= 0x0024; s->ints |= PHY_INT_ENERGYON; s->ints |= PHY_INT_AUTONEG_COMPLETE; @@ -XXX,XX +XXX,XX @@ void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down) void lan9118_phy_reset(Lan9118PhyState *s) { + trace_lan9118_phy_reset(); + s->control = 0x3000; s->status = 0x7809; s->advertise = 0x01e1; @@ -XXX,XX +XXX,XX @@ static const VMStateDescription vmstate_lan9118_phy = { .version_id = 1, .minimum_version_id = 1, .fields = (const VMStateField[]) { - VMSTATE_UINT16(control, Lan9118PhyState), VMSTATE_UINT16(status, Lan9118PhyState), + VMSTATE_UINT16(control, Lan9118PhyState), VMSTATE_UINT16(advertise, Lan9118PhyState), VMSTATE_UINT16(ints, Lan9118PhyState), VMSTATE_UINT16(int_mask, Lan9118PhyState), diff --git a/hw/net/Kconfig b/hw/net/Kconfig index XXXXXXX..XXXXXXX 100644 --- a/hw/net/Kconfig +++ b/hw/net/Kconfig @@ -XXX,XX +XXX,XX @@ config ALLWINNER_SUN8I_EMAC config IMX_FEC bool + select LAN9118_PHY config CADENCE bool diff --git a/hw/net/trace-events b/hw/net/trace-events index XXXXXXX..XXXXXXX 100644 --- a/hw/net/trace-events +++ b/hw/net/trace-events @@ -XXX,XX +XXX,XX @@ allwinner_sun8i_emac_set_link(bool active) "Set link: active=%u" allwinner_sun8i_emac_read(uint64_t offset, uint64_t val) "MMIO read: offset=0x%" PRIx64 " value=0x%" PRIx64 allwinner_sun8i_emac_write(uint64_t offset, uint64_t val) "MMIO write: offset=0x%" PRIx64 " value=0x%" PRIx64 +# lan9118_phy.c +lan9118_phy_read(uint16_t val, int reg) "[0x%02x] -> 0x%04" PRIx16 +lan9118_phy_write(uint16_t val, int reg) "[0x%02x] <- 0x%04" PRIx16 +lan9118_phy_update_link(const char *s) "%s" +lan9118_phy_reset(void) "" + # lance.c lance_mem_readw(uint64_t addr, uint32_t ret) "addr=0x%"PRIx64"val=0x%04x" lance_mem_writew(uint64_t addr, uint32_t val) "addr=0x%"PRIx64"val=0x%04x" @@ -XXX,XX +XXX,XX @@ i82596_set_multicast(uint16_t count) "Added %d multicast entries" i82596_channel_attention(void *s) "%p: Received CHANNEL ATTENTION" # imx_fec.c -imx_phy_read(uint32_t val, int phy, int reg) "0x%04"PRIx32" <= phy[%d].reg[%d]" imx_phy_read_num(int phy, int configured) "read request from unconfigured phy %d (configured %d)" -imx_phy_write(uint32_t val, int phy, int reg) "0x%04"PRIx32" => phy[%d].reg[%d]" imx_phy_write_num(int phy, int configured) "write request to unconfigured phy %d (configured %d)" -imx_phy_update_link(const char *s) "%s" -imx_phy_reset(void) "" imx_fec_read_bd(uint64_t addr, int flags, int len, int data) "tx_bd 0x%"PRIx64" flags 0x%04x len %d data 0x%08x" imx_enet_read_bd(uint64_t addr, int flags, int len, int data, int options, int status) "tx_bd 0x%"PRIx64" flags 0x%04x len %d data 0x%08x option 0x%04x status 0x%04x" imx_eth_tx_bd_busy(void) "tx_bd ran out of descriptors to transmit" -- 2.34.1 From: Bernhard Beschow <shentey@gmail.com> Turns 0x70 into 0xe0 (== 0x70 << 1) which adds the missing MII_ANLPAR_TX and fixes the MSB of selector field to be zero, as specified in the datasheet. Fixes: 2a424990170b "LAN9118 emulation" Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241102125724.532843-4-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/net/lan9118_phy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/net/lan9118_phy.c b/hw/net/lan9118_phy.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/lan9118_phy.c +++ b/hw/net/lan9118_phy.c @@ -XXX,XX +XXX,XX @@ uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg) val = s->advertise; break; case 5: /* Auto-neg Link Partner Ability */ - val = 0x0f71; + val = 0x0fe1; break; case 6: /* Auto-neg Expansion */ val = 1; -- 2.34.1 From: Bernhard Beschow <shentey@gmail.com> Prefer named constants over magic values for better readability. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Message-id: 20241102125724.532843-5-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- include/hw/net/mii.h | 6 +++++ hw/net/lan9118_phy.c | 63 ++++++++++++++++++++++++++++---------------- 2 files changed, 46 insertions(+), 23 deletions(-) diff --git a/include/hw/net/mii.h b/include/hw/net/mii.h index XXXXXXX..XXXXXXX 100644 --- a/include/hw/net/mii.h +++ b/include/hw/net/mii.h @@ -XXX,XX +XXX,XX @@ #define MII_BMSR_JABBER (1 << 1) /* Jabber detected */ #define MII_BMSR_EXTCAP (1 << 0) /* Ext-reg capability */ +#define MII_ANAR_RFAULT (1 << 13) /* Say we can detect faults */ #define MII_ANAR_PAUSE_ASYM (1 << 11) /* Try for asymmetric pause */ #define MII_ANAR_PAUSE (1 << 10) /* Try for pause */ #define MII_ANAR_TXFD (1 << 8) @@ -XXX,XX +XXX,XX @@ #define MII_ANAR_10FD (1 << 6) #define MII_ANAR_10 (1 << 5) #define MII_ANAR_CSMACD (1 << 0) +#define MII_ANAR_SELECT (0x001f) /* Selector bits */ #define MII_ANLPAR_ACK (1 << 14) #define MII_ANLPAR_PAUSEASY (1 << 11) /* can pause asymmetrically */ @@ -XXX,XX +XXX,XX @@ #define RTL8201CP_PHYID1 0x0000 #define RTL8201CP_PHYID2 0x8201 +/* SMSC LAN9118 */ +#define SMSCLAN9118_PHYID1 0x0007 +#define SMSCLAN9118_PHYID2 0xc0d1 + /* RealTek 8211E */ #define RTL8211E_PHYID1 0x001c #define RTL8211E_PHYID2 0xc915 diff --git a/hw/net/lan9118_phy.c b/hw/net/lan9118_phy.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/lan9118_phy.c +++ b/hw/net/lan9118_phy.c @@ -XXX,XX +XXX,XX @@ #include "qemu/osdep.h" #include "hw/net/lan9118_phy.h" +#include "hw/net/mii.h" #include "hw/irq.h" #include "hw/resettable.h" #include "migration/vmstate.h" @@ -XXX,XX +XXX,XX @@ uint16_t lan9118_phy_read(Lan9118PhyState *s, int reg) uint16_t val; switch (reg) { - case 0: /* Basic Control */ + case MII_BMCR: val = s->control; break; - case 1: /* Basic Status */ + case MII_BMSR: val = s->status; break; - case 2: /* ID1 */ - val = 0x0007; + case MII_PHYID1: + val = SMSCLAN9118_PHYID1; break; - case 3: /* ID2 */ - val = 0xc0d1; + case MII_PHYID2: + val = SMSCLAN9118_PHYID2; break; - case 4: /* Auto-neg advertisement */ + case MII_ANAR: val = s->advertise; break; - case 5: /* Auto-neg Link Partner Ability */ - val = 0x0fe1; + case MII_ANLPAR: + val = MII_ANLPAR_PAUSEASY | MII_ANLPAR_PAUSE | MII_ANLPAR_T4 | + MII_ANLPAR_TXFD | MII_ANLPAR_TX | MII_ANLPAR_10FD | + MII_ANLPAR_10 | MII_ANLPAR_CSMACD; break; - case 6: /* Auto-neg Expansion */ - val = 1; + case MII_ANER: + val = MII_ANER_NWAY; break; case 29: /* Interrupt source. */ val = s->ints; @@ -XXX,XX +XXX,XX @@ void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val) trace_lan9118_phy_write(val, reg); switch (reg) { - case 0: /* Basic Control */ - if (val & 0x8000) { + case MII_BMCR: + if (val & MII_BMCR_RESET) { lan9118_phy_reset(s); } else { - s->control = val & 0x7980; + s->control = val & (MII_BMCR_LOOPBACK | MII_BMCR_SPEED100 | + MII_BMCR_AUTOEN | MII_BMCR_PDOWN | MII_BMCR_FD | + MII_BMCR_CTST); /* Complete autonegotiation immediately. */ - if (val & 0x1000) { - s->status |= 0x0020; + if (val & MII_BMCR_AUTOEN) { + s->status |= MII_BMSR_AN_COMP; } } break; - case 4: /* Auto-neg advertisement */ - s->advertise = (val & 0x2d7f) | 0x80; + case MII_ANAR: + s->advertise = (val & (MII_ANAR_RFAULT | MII_ANAR_PAUSE_ASYM | + MII_ANAR_PAUSE | MII_ANAR_10FD | MII_ANAR_10 | + MII_ANAR_SELECT)) + | MII_ANAR_TX; break; case 30: /* Interrupt mask */ s->int_mask = val & 0xff; @@ -XXX,XX +XXX,XX @@ void lan9118_phy_update_link(Lan9118PhyState *s, bool link_down) /* Autonegotiation status mirrors link status. */ if (link_down) { trace_lan9118_phy_update_link("down"); - s->status &= ~0x0024; + s->status &= ~(MII_BMSR_AN_COMP | MII_BMSR_LINK_ST); s->ints |= PHY_INT_DOWN; } else { trace_lan9118_phy_update_link("up"); - s->status |= 0x0024; + s->status |= MII_BMSR_AN_COMP | MII_BMSR_LINK_ST; s->ints |= PHY_INT_ENERGYON; s->ints |= PHY_INT_AUTONEG_COMPLETE; } @@ -XXX,XX +XXX,XX @@ void lan9118_phy_reset(Lan9118PhyState *s) { trace_lan9118_phy_reset(); - s->control = 0x3000; - s->status = 0x7809; - s->advertise = 0x01e1; + s->control = MII_BMCR_AUTOEN | MII_BMCR_SPEED100; + s->status = MII_BMSR_100TX_FD + | MII_BMSR_100TX_HD + | MII_BMSR_10T_FD + | MII_BMSR_10T_HD + | MII_BMSR_AUTONEG + | MII_BMSR_EXTCAP; + s->advertise = MII_ANAR_TXFD + | MII_ANAR_TX + | MII_ANAR_10FD + | MII_ANAR_10 + | MII_ANAR_CSMACD; s->int_mask = 0; s->ints = 0; lan9118_phy_update_link(s, s->link_down); -- 2.34.1 From: Bernhard Beschow <shentey@gmail.com> The real device advertises this mode and the device model already advertises 100 mbps half duplex and 10 mbps full+half duplex. So advertise this mode to make the model more realistic. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Bernhard Beschow <shentey@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Message-id: 20241102125724.532843-6-shentey@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/net/lan9118_phy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/net/lan9118_phy.c b/hw/net/lan9118_phy.c index XXXXXXX..XXXXXXX 100644 --- a/hw/net/lan9118_phy.c +++ b/hw/net/lan9118_phy.c @@ -XXX,XX +XXX,XX @@ void lan9118_phy_write(Lan9118PhyState *s, int reg, uint16_t val) break; case MII_ANAR: s->advertise = (val & (MII_ANAR_RFAULT | MII_ANAR_PAUSE_ASYM | - MII_ANAR_PAUSE | MII_ANAR_10FD | MII_ANAR_10 | - MII_ANAR_SELECT)) + MII_ANAR_PAUSE | MII_ANAR_TXFD | MII_ANAR_10FD | + MII_ANAR_10 | MII_ANAR_SELECT)) | MII_ANAR_TX; break; case 30: /* Interrupt mask */ -- 2.34.1 For IEEE fused multiply-add, the (0 * inf) + NaN case should raise Invalid for the multiplication of 0 by infinity. Currently we handle this in the per-architecture ifdef ladder in pickNaNMulAdd(). However, since this isn't really architecture specific we can hoist it up to the generic code. For the cases where the infzero test in pickNaNMulAdd was returning 2, we can delete the check entirely and allow the code to fall into the normal pick-a-NaN handling, because this will return 2 anyway (input 'c' being the only NaN in this case). For the cases where infzero was returning 3 to indicate "return the default NaN", we must retain that "return 3". For Arm, this looks like it might be a behaviour change because we used to set float_flag_invalid | float_flag_invalid_imz only if C is a quiet NaN. However, it is not, because Arm target code never looks at float_flag_invalid_imz, and for the (0 * inf) + SNaN case we already raised float_flag_invalid via the "abc_mask & float_cmask_snan" check in pick_nan_muladd. For any target architecture using the "default implementation" at the bottom of the ifdef, this is a behaviour change but will be fixing a bug (where we failed to raise the Invalid exception for (0 * inf + QNaN). The architectures using the default case are: * hppa * i386 * sh4 * tricore The x86, Tricore and SH4 CPU architecture manuals are clear that this should have raised Invalid; HPPA is a bit vaguer but still seems clear enough. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-2-peter.maydell@linaro.org --- fpu/softfloat-parts.c.inc | 13 +++++++------ fpu/softfloat-specialize.c.inc | 29 +---------------------------- 2 files changed, 8 insertions(+), 34 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, int ab_mask, int abc_mask) { int which; + bool infzero = (ab_mask == float_cmask_infzero); if (unlikely(abc_mask & float_cmask_snan)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); } - which = pickNaNMulAdd(a->cls, b->cls, c->cls, - ab_mask == float_cmask_infzero, s); + if (infzero) { + /* This is (0 * inf) + NaN or (inf * 0) + NaN */ + float_raise(float_flag_invalid | float_flag_invalid_imz, s); + } + + which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, s); if (s->default_nan_mode || which == 3) { - /* - * Note that this check is after pickNaNMulAdd so that function - * has an opportunity to set the Invalid flag for infzero. - */ parts_default_nan(a, s); return a; } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * the default NaN */ if (infzero && is_qnan(c_cls)) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); return 3; } @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * case sets InvalidOp and returns the default NaN */ if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); return 3; } /* Prefer sNaN over qNaN, in the a, b, c order. */ @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * For MIPS systems that conform to IEEE754-2008, the (inf,zero,nan) * case sets InvalidOp and returns the input value 'c' */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - return 2; - } /* Prefer sNaN over qNaN, in the c, a, b order. */ if (is_snan(c_cls)) { return 2; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) * case sets InvalidOp and returns the input value 'c' */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - return 2; - } + /* Prefer sNaN over qNaN, in the c, a, b order. */ if (is_snan(c_cls)) { return 2; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * to return an input NaN if we have one (ie c) rather than generating * a default NaN */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - return 2; - } /* If fRA is a NaN return it; otherwise if fRB is a NaN return it; * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 1; } #elif defined(TARGET_RISCV) - /* For RISC-V, InvalidOp is set when multiplicands are Inf and zero */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - } return 3; /* default NaN */ #elif defined(TARGET_S390X) if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); return 3; } @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 2; } #elif defined(TARGET_SPARC) - /* For (inf,0,nan) return c. */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - return 2; - } /* Prefer SNaN over QNaN, order C, B, A. */ if (is_snan(c_cls)) { return 2; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * For Xtensa, the (inf,zero,nan) case sets InvalidOp and returns * an input NaN if we have one (ie c). */ - if (infzero) { - float_raise(float_flag_invalid | float_flag_invalid_imz, status); - return 2; - } if (status->use_first_nan) { if (is_nan(a_cls)) { return 0; -- 2.34.1 If the target sets default_nan_mode then we're always going to return the default NaN, and pickNaNMulAdd() no longer has any side effects. For consistency with pickNaN(), check for default_nan_mode before calling pickNaNMulAdd(). When we convert pickNaNMulAdd() to allow runtime selection of the NaN propagation rule, this means we won't have to make the targets which use default_nan_mode also set a propagation rule. Since RiscV always uses default_nan_mode, this allows us to remove its ifdef case from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-3-peter.maydell@linaro.org --- fpu/softfloat-parts.c.inc | 8 ++++++-- fpu/softfloat-specialize.c.inc | 9 +++++++-- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, float_raise(float_flag_invalid | float_flag_invalid_imz, s); } - which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, s); + if (s->default_nan_mode) { + which = 3; + } else { + which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, s); + } - if (s->default_nan_mode || which == 3) { + if (which == 3) { parts_default_nan(a, s); return a; } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, bool infzero, float_status *status) { + /* + * We guarantee not to require the target to tell us how to + * pick a NaN if we're always returning the default NaN. + * But if we're not in default-NaN mode then the target must + * specify. + */ + assert(!status->default_nan_mode); #if defined(TARGET_ARM) /* For ARM, the (inf,zero,qnan) case sets InvalidOp and returns * the default NaN @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { return 1; } -#elif defined(TARGET_RISCV) - return 3; /* default NaN */ #elif defined(TARGET_S390X) if (infzero) { return 3; -- 2.34.1 IEEE 758 does not define a fixed rule for what NaN to return in the case of a fused multiply-add of inf * 0 + NaN. Different architectures thus do different things: * some return the default NaN * some return the input NaN * Arm returns the default NaN if the input NaN is quiet, and the input NaN if it is signalling We want to make this logic be runtime selected rather than hardcoded into the binary, because: * this will let us have multiple targets in one QEMU binary * the Arm FEAT_AFP architectural feature includes letting the guest select a NaN propagation rule at runtime In this commit we add an enum for the propagation rule, the field in float_status, and the corresponding getters and setters. We change pickNaNMulAdd to honour this, but because all targets still leave this field at its default 0 value, the fallback logic will pick the rule type with the old ifdef ladder. Note that four architectures both use the muladd softfloat functions and did not have a branch of the ifdef ladder to specify their behaviour (and so were ending up with the "default" case, probably wrongly): i386, HPPA, SH4 and Tricore. SH4 and Tricore both set default_nan_mode, and so will never get into pickNaNMulAdd(). For HPPA and i386 we retain the same behaviour as the old default-case, which is to not ever return the default NaN. This might not be correct but it is not a behaviour change. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-4-peter.maydell@linaro.org --- include/fpu/softfloat-helpers.h | 11 ++++ include/fpu/softfloat-types.h | 23 +++++++++ fpu/softfloat-specialize.c.inc | 91 ++++++++++++++++++++++----------- 3 files changed, 95 insertions(+), 30 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -XXX,XX +XXX,XX @@ static inline void set_float_2nan_prop_rule(Float2NaNPropRule rule, status->float_2nan_prop_rule = rule; } +static inline void set_float_infzeronan_rule(FloatInfZeroNaNRule rule, + float_status *status) +{ + status->float_infzeronan_rule = rule; +} + static inline void set_flush_to_zero(bool val, float_status *status) { status->flush_to_zero = val; @@ -XXX,XX +XXX,XX @@ static inline Float2NaNPropRule get_float_2nan_prop_rule(float_status *status) return status->float_2nan_prop_rule; } +static inline FloatInfZeroNaNRule get_float_infzeronan_rule(float_status *status) +{ + return status->float_infzeronan_rule; +} + static inline bool get_flush_to_zero(float_status *status) { return status->flush_to_zero; diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -XXX,XX +XXX,XX @@ typedef enum __attribute__((__packed__)) { float_2nan_prop_x87, } Float2NaNPropRule; +/* + * Rule for result of fused multiply-add 0 * Inf + NaN. + * This must be a NaN, but implementations differ on whether this + * is the input NaN or the default NaN. + * + * You don't need to set this if default_nan_mode is enabled. + * When not in default-NaN mode, it is an error for the target + * not to set the rule in float_status if it uses muladd, and we + * will assert if we need to handle an input NaN and no rule was + * selected. + */ +typedef enum __attribute__((__packed__)) { + /* No propagation rule specified */ + float_infzeronan_none = 0, + /* Result is never the default NaN (so always the input NaN) */ + float_infzeronan_dnan_never, + /* Result is always the default NaN */ + float_infzeronan_dnan_always, + /* Result is the default NaN if the input NaN is quiet */ + float_infzeronan_dnan_if_qnan, +} FloatInfZeroNaNRule; + /* * Floating Point Status. Individual architectures may maintain * several versions of float_status for different functions. The @@ -XXX,XX +XXX,XX @@ typedef struct float_status { FloatRoundMode float_rounding_mode; FloatX80RoundPrec floatx80_rounding_precision; Float2NaNPropRule float_2nan_prop_rule; + FloatInfZeroNaNRule float_infzeronan_rule; bool tininess_before_rounding; /* should denormalised results go to zero and set the inexact flag? */ bool flush_to_zero; diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, bool infzero, float_status *status) { + FloatInfZeroNaNRule rule = status->float_infzeronan_rule; + /* * We guarantee not to require the target to tell us how to * pick a NaN if we're always returning the default NaN. @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * specify. */ assert(!status->default_nan_mode); + + if (rule == float_infzeronan_none) { + /* + * Temporarily fall back to ifdef ladder + */ #if defined(TARGET_ARM) - /* For ARM, the (inf,zero,qnan) case sets InvalidOp and returns - * the default NaN - */ - if (infzero && is_qnan(c_cls)) { - return 3; + /* + * For ARM, the (inf,zero,qnan) case returns the default NaN, + * but (inf,zero,snan) returns the input NaN. + */ + rule = float_infzeronan_dnan_if_qnan; +#elif defined(TARGET_MIPS) + if (snan_bit_is_one(status)) { + /* + * For MIPS systems that conform to IEEE754-1985, the (inf,zero,nan) + * case sets InvalidOp and returns the default NaN + */ + rule = float_infzeronan_dnan_always; + } else { + /* + * For MIPS systems that conform to IEEE754-2008, the (inf,zero,nan) + * case sets InvalidOp and returns the input value 'c' + */ + rule = float_infzeronan_dnan_never; + } +#elif defined(TARGET_PPC) || defined(TARGET_SPARC) || \ + defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ + defined(TARGET_I386) || defined(TARGET_LOONGARCH) + /* + * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) + * case sets InvalidOp and returns the input value 'c' + */ + /* + * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer + * to return an input NaN if we have one (ie c) rather than generating + * a default NaN + */ + rule = float_infzeronan_dnan_never; +#elif defined(TARGET_S390X) + rule = float_infzeronan_dnan_always; +#endif } + if (infzero) { + /* + * Inf * 0 + NaN -- some implementations return the default NaN here, + * and some return the input NaN. + */ + switch (rule) { + case float_infzeronan_dnan_never: + return 2; + case float_infzeronan_dnan_always: + return 3; + case float_infzeronan_dnan_if_qnan: + return is_qnan(c_cls) ? 3 : 2; + default: + g_assert_not_reached(); + } + } + +#if defined(TARGET_ARM) + /* This looks different from the ARM ARM pseudocode, because the ARM ARM * puts the operands to a fused mac operation (a*b)+c in the order c,a,b. */ @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } #elif defined(TARGET_MIPS) if (snan_bit_is_one(status)) { - /* - * For MIPS systems that conform to IEEE754-1985, the (inf,zero,nan) - * case sets InvalidOp and returns the default NaN - */ - if (infzero) { - return 3; - } /* Prefer sNaN over qNaN, in the a, b, c order. */ if (is_snan(a_cls)) { return 0; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 2; } } else { - /* - * For MIPS systems that conform to IEEE754-2008, the (inf,zero,nan) - * case sets InvalidOp and returns the input value 'c' - */ /* Prefer sNaN over qNaN, in the c, a, b order. */ if (is_snan(c_cls)) { return 2; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } } #elif defined(TARGET_LOONGARCH64) - /* - * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) - * case sets InvalidOp and returns the input value 'c' - */ - /* Prefer sNaN over qNaN, in the c, a, b order. */ if (is_snan(c_cls)) { return 2; @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 1; } #elif defined(TARGET_PPC) - /* For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer - * to return an input NaN if we have one (ie c) rather than generating - * a default NaN - */ - /* If fRA is a NaN return it; otherwise if fRB is a NaN return it; * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB */ @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, return 1; } #elif defined(TARGET_S390X) - if (infzero) { - return 3; - } - if (is_snan(a_cls)) { return 0; } else if (is_snan(b_cls)) { -- 2.34.1 Explicitly set a rule in the softfloat tests for the inf-zero-nan muladd special case. In meson.build we put -DTARGET_ARM in fpcflags, and so we should select here the Arm rule of float_infzeronan_dnan_if_qnan. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241202131347.498124-5-peter.maydell@linaro.org --- tests/fp/fp-bench.c | 5 +++++ tests/fp/fp-test.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-bench.c +++ b/tests/fp/fp-bench.c @@ -XXX,XX +XXX,XX @@ static void run_bench(void) { bench_func_t f; + /* + * These implementation-defined choices for various things IEEE + * doesn't specify match those used by the Arm architecture. + */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &soft_status); + set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &soft_status); f = bench_funcs[operation][precision]; g_assert(f); diff --git a/tests/fp/fp-test.c b/tests/fp/fp-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-test.c +++ b/tests/fp/fp-test.c @@ -XXX,XX +XXX,XX @@ void run_test(void) { unsigned int i; + /* + * These implementation-defined choices for various things IEEE + * doesn't specify match those used by the Arm architecture. + */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &qsf); + set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &qsf); genCases_setLevel(test_level); verCases_maxErrorCount = n_max_errors; -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the Arm target, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-6-peter.maydell@linaro.org --- target/arm/cpu.c | 3 +++ fpu/softfloat-specialize.c.inc | 8 +------- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, * * tininess-before-rounding * * 2-input NaN propagation prefers SNaN over QNaN, and then * operand A over operand B (see FPProcessNaNs() pseudocode) + * * 0 * Inf + NaN returns the default NaN if the input NaN is quiet, + * and the input NaN if it is signalling */ static void arm_set_default_fp_behaviours(float_status *s) { set_float_detect_tininess(float_tininess_before_rounding, s); set_float_2nan_prop_rule(float_2nan_prop_s_ab, s); + set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, s); } static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, /* * Temporarily fall back to ifdef ladder */ -#if defined(TARGET_ARM) - /* - * For ARM, the (inf,zero,qnan) case returns the default NaN, - * but (inf,zero,snan) returns the input NaN. - */ - rule = float_infzeronan_dnan_if_qnan; -#elif defined(TARGET_MIPS) +#if defined(TARGET_MIPS) if (snan_bit_is_one(status)) { /* * For MIPS systems that conform to IEEE754-1985, the (inf,zero,nan) -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for s390, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-7-peter.maydell@linaro.org --- target/s390x/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -XXX,XX +XXX,XX @@ static void s390_cpu_reset_hold(Object *obj, ResetType type) set_float_detect_tininess(float_tininess_before_rounding, &env->fpu_status); set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fpu_status); + set_float_infzeronan_rule(float_infzeronan_dnan_always, + &env->fpu_status); /* fall through */ case RESET_TYPE_S390_CPU_NORMAL: env->psw.mask &= ~PSW_MASK_RI; diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * a default NaN */ rule = float_infzeronan_dnan_never; -#elif defined(TARGET_S390X) - rule = float_infzeronan_dnan_always; #endif } -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the PPC target, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-8-peter.maydell@linaro.org --- target/ppc/cpu_init.c | 7 +++++++ fpu/softfloat-specialize.c.inc | 7 +------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index XXXXXXX..XXXXXXX 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -XXX,XX +XXX,XX @@ static void ppc_cpu_reset_hold(Object *obj, ResetType type) */ set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); set_float_2nan_prop_rule(float_2nan_prop_ab, &env->vec_status); + /* + * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer + * to return an input NaN if we have one (ie c) rather than generating + * a default NaN + */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->vec_status); for (i = 0; i < ARRAY_SIZE(env->spr_cb); i++) { ppc_spr_t *spr = &env->spr_cb[i]; diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, */ rule = float_infzeronan_dnan_never; } -#elif defined(TARGET_PPC) || defined(TARGET_SPARC) || \ +#elif defined(TARGET_SPARC) || \ defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ defined(TARGET_I386) || defined(TARGET_LOONGARCH) /* * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) * case sets InvalidOp and returns the input value 'c' */ - /* - * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer - * to return an input NaN if we have one (ie c) rather than generating - * a default NaN - */ rule = float_infzeronan_dnan_never; #endif } -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the MIPS target, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-9-peter.maydell@linaro.org --- target/mips/fpu_helper.h | 9 +++++++++ target/mips/msa.c | 4 ++++ fpu/softfloat-specialize.c.inc | 16 +--------------- 3 files changed, 14 insertions(+), 15 deletions(-) diff --git a/target/mips/fpu_helper.h b/target/mips/fpu_helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/mips/fpu_helper.h +++ b/target/mips/fpu_helper.h @@ -XXX,XX +XXX,XX @@ static inline void restore_flush_mode(CPUMIPSState *env) static inline void restore_snan_bit_mode(CPUMIPSState *env) { bool nan2008 = env->active_fpu.fcr31 & (1 << FCR31_NAN2008); + FloatInfZeroNaNRule izn_rule; /* * With nan2008, SNaNs are silenced in the usual way. @@ -XXX,XX +XXX,XX @@ static inline void restore_snan_bit_mode(CPUMIPSState *env) */ set_snan_bit_is_one(!nan2008, &env->active_fpu.fp_status); set_default_nan_mode(!nan2008, &env->active_fpu.fp_status); + /* + * For MIPS systems that conform to IEEE754-1985, the (inf,zero,nan) + * case sets InvalidOp and returns the default NaN. + * For MIPS systems that conform to IEEE754-2008, the (inf,zero,nan) + * case sets InvalidOp and returns the input value 'c'. + */ + izn_rule = nan2008 ? float_infzeronan_dnan_never : float_infzeronan_dnan_always; + set_float_infzeronan_rule(izn_rule, &env->active_fpu.fp_status); } static inline void restore_fp_status(CPUMIPSState *env) diff --git a/target/mips/msa.c b/target/mips/msa.c index XXXXXXX..XXXXXXX 100644 --- a/target/mips/msa.c +++ b/target/mips/msa.c @@ -XXX,XX +XXX,XX @@ void msa_reset(CPUMIPSState *env) /* set proper signanling bit meaning ("1" means "quiet") */ set_snan_bit_is_one(0, &env->active_tc.msa_fp_status); + + /* Inf * 0 + NaN returns the input NaN */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, + &env->active_tc.msa_fp_status); } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, /* * Temporarily fall back to ifdef ladder */ -#if defined(TARGET_MIPS) - if (snan_bit_is_one(status)) { - /* - * For MIPS systems that conform to IEEE754-1985, the (inf,zero,nan) - * case sets InvalidOp and returns the default NaN - */ - rule = float_infzeronan_dnan_always; - } else { - /* - * For MIPS systems that conform to IEEE754-2008, the (inf,zero,nan) - * case sets InvalidOp and returns the input value 'c' - */ - rule = float_infzeronan_dnan_never; - } -#elif defined(TARGET_SPARC) || \ +#if defined(TARGET_SPARC) || \ defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ defined(TARGET_I386) || defined(TARGET_LOONGARCH) /* -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the SPARC target, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-10-peter.maydell@linaro.org --- target/sparc/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 3 +-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -XXX,XX +XXX,XX @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp) * the CPU state struct so it won't get zeroed on reset. */ set_float_2nan_prop_rule(float_2nan_prop_s_ba, &env->fp_status); + /* For inf * 0 + NaN, return the input NaN */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); cpu_exec_realizefn(cs, &local_err); if (local_err != NULL) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, /* * Temporarily fall back to ifdef ladder */ -#if defined(TARGET_SPARC) || \ - defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ +#if defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ defined(TARGET_I386) || defined(TARGET_LOONGARCH) /* * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the xtensa target, so we can remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-11-peter.maydell@linaro.org --- target/xtensa/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -XXX,XX +XXX,XX @@ static void xtensa_cpu_reset_hold(Object *obj, ResetType type) reset_mmu(env); cs->halted = env->runstall; #endif + /* For inf * 0 + NaN, return the input NaN */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); set_no_signaling_nans(!dfpu, &env->fp_status); xtensa_use_first_nan(env, !dfpu); } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, /* * Temporarily fall back to ifdef ladder */ -#if defined(TARGET_XTENSA) || defined(TARGET_HPPA) || \ +#if defined(TARGET_HPPA) || \ defined(TARGET_I386) || defined(TARGET_LOONGARCH) /* * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the x86 target. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-12-peter.maydell@linaro.org --- target/i386/tcg/fpu_helper.c | 7 +++++++ fpu/softfloat-specialize.c.inc | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void cpu_init_fp_statuses(CPUX86State *env) */ set_float_2nan_prop_rule(float_2nan_prop_x87, &env->mmx_status); set_float_2nan_prop_rule(float_2nan_prop_x87, &env->sse_status); + /* + * Only SSE has multiply-add instructions. In the SDM Section 14.5.2 + * "Fused-Multiply-ADD (FMA) Numeric Behavior" the NaN handling is + * specified -- for 0 * inf + NaN the input NaN is selected, and if + * there are multiple input NaNs they are selected in the order a, b, c. + */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->sse_status); } static inline uint8_t save_exception_flags(CPUX86State *env) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, * Temporarily fall back to ifdef ladder */ #if defined(TARGET_HPPA) || \ - defined(TARGET_I386) || defined(TARGET_LOONGARCH) + defined(TARGET_LOONGARCH) /* * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) * case sets InvalidOp and returns the input value 'c' -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the loongarch target. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-13-peter.maydell@linaro.org --- target/loongarch/tcg/fpu_helper.c | 5 +++++ fpu/softfloat-specialize.c.inc | 7 +------ 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/target/loongarch/tcg/fpu_helper.c b/target/loongarch/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/loongarch/tcg/fpu_helper.c +++ b/target/loongarch/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void restore_fp_status(CPULoongArchState *env) &env->fp_status); set_flush_to_zero(0, &env->fp_status); set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status); + /* + * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) + * case sets InvalidOp and returns the input value 'c' + */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); } int ieee_ex_to_loongarch(int xcpt) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, /* * Temporarily fall back to ifdef ladder */ -#if defined(TARGET_HPPA) || \ - defined(TARGET_LOONGARCH) - /* - * For LoongArch systems that conform to IEEE754-2008, the (inf,zero,nan) - * case sets InvalidOp and returns the input value 'c' - */ +#if defined(TARGET_HPPA) rule = float_infzeronan_dnan_never; #endif } -- 2.34.1 Set the FloatInfZeroNaNRule explicitly for the HPPA target, so we can remove the ifdef from pickNaNMulAdd(). As this is the last target to be converted to explicitly setting the rule, we can remove the fallback code in pickNaNMulAdd() entirely. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-14-peter.maydell@linaro.org --- target/hppa/fpu_helper.c | 2 ++ fpu/softfloat-specialize.c.inc | 13 +------------ 2 files changed, 3 insertions(+), 12 deletions(-) diff --git a/target/hppa/fpu_helper.c b/target/hppa/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/hppa/fpu_helper.c +++ b/target/hppa/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(loaded_fr0)(CPUHPPAState *env) * HPPA does note implement a CPU reset method at all... */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status); + /* For inf * 0 + NaN, return the input NaN */ + set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); } void cpu_hppa_loaded_fr0(CPUHPPAState *env) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, bool infzero, float_status *status) { - FloatInfZeroNaNRule rule = status->float_infzeronan_rule; - /* * We guarantee not to require the target to tell us how to * pick a NaN if we're always returning the default NaN. @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, */ assert(!status->default_nan_mode); - if (rule == float_infzeronan_none) { - /* - * Temporarily fall back to ifdef ladder - */ -#if defined(TARGET_HPPA) - rule = float_infzeronan_dnan_never; -#endif - } - if (infzero) { /* * Inf * 0 + NaN -- some implementations return the default NaN here, * and some return the input NaN. */ - switch (rule) { + switch (status->float_infzeronan_rule) { case float_infzeronan_dnan_never: return 2; case float_infzeronan_dnan_always: -- 2.34.1 The new implementation of pickNaNMulAdd() will find it convenient to know whether at least one of the three arguments to the muladd was a signaling NaN. We already calculate that in the caller, so pass it in as a new bool have_snan. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-15-peter.maydell@linaro.org --- fpu/softfloat-parts.c.inc | 5 +++-- fpu/softfloat-specialize.c.inc | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, { int which; bool infzero = (ab_mask == float_cmask_infzero); + bool have_snan = (abc_mask & float_cmask_snan); - if (unlikely(abc_mask & float_cmask_snan)) { + if (unlikely(have_snan)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); } @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, if (s->default_nan_mode) { which = 3; } else { - which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, s); + which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, have_snan, s); } if (which == 3) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, | Return values : 0 : a; 1 : b; 2 : c; 3 : default-NaN *----------------------------------------------------------------------------*/ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, - bool infzero, float_status *status) + bool infzero, bool have_snan, float_status *status) { /* * We guarantee not to require the target to tell us how to -- 2.34.1 IEEE 758 does not define a fixed rule for which NaN to pick as the result if both operands of a 3-operand fused multiply-add operation are NaNs. As a result different architectures have ended up with different rules for propagating NaNs. QEMU currently hardcodes the NaN propagation logic into the binary because pickNaNMulAdd() has an ifdef ladder for different targets. We want to make the propagation rule instead be selectable at runtime, because: * this will let us have multiple targets in one QEMU binary * the Arm FEAT_AFP architectural feature includes letting the guest select a NaN propagation rule at runtime In this commit we add an enum for the propagation rule, the field in float_status, and the corresponding getters and setters. We change pickNaNMulAdd to honour this, but because all targets still leave this field at its default 0 value, the fallback logic will pick the rule type with the old ifdef ladder. It's valid not to set a propagation rule if default_nan_mode is enabled, because in that case there's no need to pick a NaN; all the callers of pickNaNMulAdd() catch this case and skip calling it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-16-peter.maydell@linaro.org --- include/fpu/softfloat-helpers.h | 11 +++ include/fpu/softfloat-types.h | 55 +++++++++++ fpu/softfloat-specialize.c.inc | 167 ++++++++------------------------ 3 files changed, 107 insertions(+), 126 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -XXX,XX +XXX,XX @@ static inline void set_float_2nan_prop_rule(Float2NaNPropRule rule, status->float_2nan_prop_rule = rule; } +static inline void set_float_3nan_prop_rule(Float3NaNPropRule rule, + float_status *status) +{ + status->float_3nan_prop_rule = rule; +} + static inline void set_float_infzeronan_rule(FloatInfZeroNaNRule rule, float_status *status) { @@ -XXX,XX +XXX,XX @@ static inline Float2NaNPropRule get_float_2nan_prop_rule(float_status *status) return status->float_2nan_prop_rule; } +static inline Float3NaNPropRule get_float_3nan_prop_rule(float_status *status) +{ + return status->float_3nan_prop_rule; +} + static inline FloatInfZeroNaNRule get_float_infzeronan_rule(float_status *status) { return status->float_infzeronan_rule; diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -XXX,XX +XXX,XX @@ this code that are retained. #ifndef SOFTFLOAT_TYPES_H #define SOFTFLOAT_TYPES_H +#include "hw/registerfields.h" + /* * Software IEC/IEEE floating-point types. */ @@ -XXX,XX +XXX,XX @@ typedef enum __attribute__((__packed__)) { float_2nan_prop_x87, } Float2NaNPropRule; +/* + * 3-input NaN propagation rule, for fused multiply-add. Individual + * architectures have different rules for which input NaN is + * propagated to the output when there is more than one NaN on the + * input. + * + * If default_nan_mode is enabled then it is valid not to set a NaN + * propagation rule, because the softfloat code guarantees not to try + * to pick a NaN to propagate in default NaN mode. When not in + * default-NaN mode, it is an error for the target not to set the rule + * in float_status if it uses a muladd, and we will assert if we need + * to handle an input NaN and no rule was selected. + * + * The naming scheme for Float3NaNPropRule values is: + * float_3nan_prop_s_abc: + * = "Prefer SNaN over QNaN, then operand A over B over C" + * float_3nan_prop_abc: + * = "Prefer A over B over C regardless of SNaN vs QNAN" + * + * For QEMU, the multiply-add operation is A * B + C. + */ + +/* + * We set the Float3NaNPropRule enum values up so we can select the + * right value in pickNaNMulAdd in a data driven way. + */ +FIELD(3NAN, 1ST, 0, 2) /* which operand is most preferred ? */ +FIELD(3NAN, 2ND, 2, 2) /* which operand is next most preferred ? */ +FIELD(3NAN, 3RD, 4, 2) /* which operand is least preferred ? */ +FIELD(3NAN, SNAN, 6, 1) /* do we prefer SNaN over QNaN ? */ + +#define PROPRULE(X, Y, Z) \ + ((X << R_3NAN_1ST_SHIFT) | (Y << R_3NAN_2ND_SHIFT) | (Z << R_3NAN_3RD_SHIFT)) + +typedef enum __attribute__((__packed__)) { + float_3nan_prop_none = 0, /* No propagation rule specified */ + float_3nan_prop_abc = PROPRULE(0, 1, 2), + float_3nan_prop_acb = PROPRULE(0, 2, 1), + float_3nan_prop_bac = PROPRULE(1, 0, 2), + float_3nan_prop_bca = PROPRULE(1, 2, 0), + float_3nan_prop_cab = PROPRULE(2, 0, 1), + float_3nan_prop_cba = PROPRULE(2, 1, 0), + float_3nan_prop_s_abc = float_3nan_prop_abc | R_3NAN_SNAN_MASK, + float_3nan_prop_s_acb = float_3nan_prop_acb | R_3NAN_SNAN_MASK, + float_3nan_prop_s_bac = float_3nan_prop_bac | R_3NAN_SNAN_MASK, + float_3nan_prop_s_bca = float_3nan_prop_bca | R_3NAN_SNAN_MASK, + float_3nan_prop_s_cab = float_3nan_prop_cab | R_3NAN_SNAN_MASK, + float_3nan_prop_s_cba = float_3nan_prop_cba | R_3NAN_SNAN_MASK, +} Float3NaNPropRule; + +#undef PROPRULE + /* * Rule for result of fused multiply-add 0 * Inf + NaN. * This must be a NaN, but implementations differ on whether this @@ -XXX,XX +XXX,XX @@ typedef struct float_status { FloatRoundMode float_rounding_mode; FloatX80RoundPrec floatx80_rounding_precision; Float2NaNPropRule float_2nan_prop_rule; + Float3NaNPropRule float_3nan_prop_rule; FloatInfZeroNaNRule float_infzeronan_rule; bool tininess_before_rounding; /* should denormalised results go to zero and set the inexact flag? */ diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, bool infzero, bool have_snan, float_status *status) { + FloatClass cls[3] = { a_cls, b_cls, c_cls }; + Float3NaNPropRule rule = status->float_3nan_prop_rule; + int which; + /* * We guarantee not to require the target to tell us how to * pick a NaN if we're always returning the default NaN. @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } } + if (rule == float_3nan_prop_none) { #if defined(TARGET_ARM) - - /* This looks different from the ARM ARM pseudocode, because the ARM ARM - * puts the operands to a fused mac operation (a*b)+c in the order c,a,b. - */ - if (is_snan(c_cls)) { - return 2; - } else if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_qnan(c_cls)) { - return 2; - } else if (is_qnan(a_cls)) { - return 0; - } else { - return 1; - } + /* + * This looks different from the ARM ARM pseudocode, because the ARM ARM + * puts the operands to a fused mac operation (a*b)+c in the order c,a,b + */ + rule = float_3nan_prop_s_cab; #elif defined(TARGET_MIPS) - if (snan_bit_is_one(status)) { - /* Prefer sNaN over qNaN, in the a, b, c order. */ - if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_snan(c_cls)) { - return 2; - } else if (is_qnan(a_cls)) { - return 0; - } else if (is_qnan(b_cls)) { - return 1; + if (snan_bit_is_one(status)) { + rule = float_3nan_prop_s_abc; } else { - return 2; + rule = float_3nan_prop_s_cab; } - } else { - /* Prefer sNaN over qNaN, in the c, a, b order. */ - if (is_snan(c_cls)) { - return 2; - } else if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_qnan(c_cls)) { - return 2; - } else if (is_qnan(a_cls)) { - return 0; - } else { - return 1; - } - } #elif defined(TARGET_LOONGARCH64) - /* Prefer sNaN over qNaN, in the c, a, b order. */ - if (is_snan(c_cls)) { - return 2; - } else if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_qnan(c_cls)) { - return 2; - } else if (is_qnan(a_cls)) { - return 0; - } else { - return 1; - } + rule = float_3nan_prop_s_cab; #elif defined(TARGET_PPC) - /* If fRA is a NaN return it; otherwise if fRB is a NaN return it; - * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB - */ - if (is_nan(a_cls)) { - return 0; - } else if (is_nan(c_cls)) { - return 2; - } else { - return 1; - } + /* + * If fRA is a NaN return it; otherwise if fRB is a NaN return it; + * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB + */ + rule = float_3nan_prop_acb; #elif defined(TARGET_S390X) - if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_snan(c_cls)) { - return 2; - } else if (is_qnan(a_cls)) { - return 0; - } else if (is_qnan(b_cls)) { - return 1; - } else { - return 2; - } + rule = float_3nan_prop_s_abc; #elif defined(TARGET_SPARC) - /* Prefer SNaN over QNaN, order C, B, A. */ - if (is_snan(c_cls)) { - return 2; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_snan(a_cls)) { - return 0; - } else if (is_qnan(c_cls)) { - return 2; - } else if (is_qnan(b_cls)) { - return 1; - } else { - return 0; - } + rule = float_3nan_prop_s_cba; #elif defined(TARGET_XTENSA) - /* - * For Xtensa, the (inf,zero,nan) case sets InvalidOp and returns - * an input NaN if we have one (ie c). - */ - if (status->use_first_nan) { - if (is_nan(a_cls)) { - return 0; - } else if (is_nan(b_cls)) { - return 1; + if (status->use_first_nan) { + rule = float_3nan_prop_abc; } else { - return 2; + rule = float_3nan_prop_cba; } - } else { - if (is_nan(c_cls)) { - return 2; - } else if (is_nan(b_cls)) { - return 1; - } else { - return 0; - } - } #else - /* A default implementation: prefer a to b to c. - * This is unlikely to actually match any real implementation. - */ - if (is_nan(a_cls)) { - return 0; - } else if (is_nan(b_cls)) { - return 1; - } else { - return 2; - } + rule = float_3nan_prop_abc; #endif + } + + assert(rule != float_3nan_prop_none); + if (have_snan && (rule & R_3NAN_SNAN_MASK)) { + /* We have at least one SNaN input and should prefer it */ + do { + which = rule & R_3NAN_1ST_MASK; + rule >>= R_3NAN_1ST_LENGTH; + } while (!is_snan(cls[which])); + } else { + do { + which = rule & R_3NAN_1ST_MASK; + rule >>= R_3NAN_1ST_LENGTH; + } while (!is_nan(cls[which])); + } + return which; } /*---------------------------------------------------------------------------- -- 2.34.1 Explicitly set a rule in the softfloat tests for propagating NaNs in the muladd case. In meson.build we put -DTARGET_ARM in fpcflags, and so we should select here the Arm rule of float_3nan_prop_s_cab. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-17-peter.maydell@linaro.org --- tests/fp/fp-bench.c | 1 + tests/fp/fp-test.c | 1 + 2 files changed, 2 insertions(+) diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-bench.c +++ b/tests/fp/fp-bench.c @@ -XXX,XX +XXX,XX @@ static void run_bench(void) * doesn't specify match those used by the Arm architecture. */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &soft_status); + set_float_3nan_prop_rule(float_3nan_prop_s_cab, &soft_status); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &soft_status); f = bench_funcs[operation][precision]; diff --git a/tests/fp/fp-test.c b/tests/fp/fp-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-test.c +++ b/tests/fp/fp-test.c @@ -XXX,XX +XXX,XX @@ void run_test(void) * doesn't specify match those used by the Arm architecture. */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &qsf); + set_float_3nan_prop_rule(float_3nan_prop_s_cab, &qsf); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &qsf); genCases_setLevel(test_level); -- 2.34.1 Set the Float3NaNPropRule explicitly for Arm, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-18-peter.maydell@linaro.org --- target/arm/cpu.c | 5 +++++ fpu/softfloat-specialize.c.inc | 8 +------- 2 files changed, 6 insertions(+), 7 deletions(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, * * tininess-before-rounding * * 2-input NaN propagation prefers SNaN over QNaN, and then * operand A over operand B (see FPProcessNaNs() pseudocode) + * * 3-input NaN propagation prefers SNaN over QNaN, and then + * operand C over A over B (see FPProcessNaNs3() pseudocode, + * but note that for QEMU muladd is a * b + c, whereas for + * the pseudocode function the arguments are in the order c, a, b. * * 0 * Inf + NaN returns the default NaN if the input NaN is quiet, * and the input NaN if it is signalling */ @@ -XXX,XX +XXX,XX @@ static void arm_set_default_fp_behaviours(float_status *s) { set_float_detect_tininess(float_tininess_before_rounding, s); set_float_2nan_prop_rule(float_2nan_prop_s_ab, s); + set_float_3nan_prop_rule(float_3nan_prop_s_cab, s); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, s); } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } if (rule == float_3nan_prop_none) { -#if defined(TARGET_ARM) - /* - * This looks different from the ARM ARM pseudocode, because the ARM ARM - * puts the operands to a fused mac operation (a*b)+c in the order c,a,b - */ - rule = float_3nan_prop_s_cab; -#elif defined(TARGET_MIPS) +#if defined(TARGET_MIPS) if (snan_bit_is_one(status)) { rule = float_3nan_prop_s_abc; } else { -- 2.34.1 Set the Float3NaNPropRule explicitly for loongarch, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-19-peter.maydell@linaro.org --- target/loongarch/tcg/fpu_helper.c | 1 + fpu/softfloat-specialize.c.inc | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/target/loongarch/tcg/fpu_helper.c b/target/loongarch/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/loongarch/tcg/fpu_helper.c +++ b/target/loongarch/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void restore_fp_status(CPULoongArchState *env) * case sets InvalidOp and returns the input value 'c' */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); + set_float_3nan_prop_rule(float_3nan_prop_s_cab, &env->fp_status); } int ieee_ex_to_loongarch(int xcpt) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { rule = float_3nan_prop_s_cab; } -#elif defined(TARGET_LOONGARCH64) - rule = float_3nan_prop_s_cab; #elif defined(TARGET_PPC) /* * If fRA is a NaN return it; otherwise if fRB is a NaN return it; -- 2.34.1 Set the Float3NaNPropRule explicitly for PPC, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-20-peter.maydell@linaro.org --- target/ppc/cpu_init.c | 8 ++++++++ fpu/softfloat-specialize.c.inc | 6 ------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index XXXXXXX..XXXXXXX 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -XXX,XX +XXX,XX @@ static void ppc_cpu_reset_hold(Object *obj, ResetType type) */ set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); set_float_2nan_prop_rule(float_2nan_prop_ab, &env->vec_status); + /* + * NaN propagation for fused multiply-add: + * if fRA is a NaN return it; otherwise if fRB is a NaN return it; + * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB + * whereas QEMU labels the operands as (a * b) + c. + */ + set_float_3nan_prop_rule(float_3nan_prop_acb, &env->fp_status); + set_float_3nan_prop_rule(float_3nan_prop_acb, &env->vec_status); /* * For PPC, the (inf,zero,qnan) case sets InvalidOp, but we prefer * to return an input NaN if we have one (ie c) rather than generating diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { rule = float_3nan_prop_s_cab; } -#elif defined(TARGET_PPC) - /* - * If fRA is a NaN return it; otherwise if fRB is a NaN return it; - * otherwise return fRC. Note that muladd on PPC is (fRA * fRC) + frB - */ - rule = float_3nan_prop_acb; #elif defined(TARGET_S390X) rule = float_3nan_prop_s_abc; #elif defined(TARGET_SPARC) -- 2.34.1 Set the Float3NaNPropRule explicitly for s390x, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-21-peter.maydell@linaro.org --- target/s390x/cpu.c | 1 + fpu/softfloat-specialize.c.inc | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -XXX,XX +XXX,XX @@ static void s390_cpu_reset_hold(Object *obj, ResetType type) set_float_detect_tininess(float_tininess_before_rounding, &env->fpu_status); set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fpu_status); + set_float_3nan_prop_rule(float_3nan_prop_s_abc, &env->fpu_status); set_float_infzeronan_rule(float_infzeronan_dnan_always, &env->fpu_status); /* fall through */ diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { rule = float_3nan_prop_s_cab; } -#elif defined(TARGET_S390X) - rule = float_3nan_prop_s_abc; #elif defined(TARGET_SPARC) rule = float_3nan_prop_s_cba; #elif defined(TARGET_XTENSA) -- 2.34.1 Set the Float3NaNPropRule explicitly for SPARC, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-22-peter.maydell@linaro.org --- target/sparc/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -XXX,XX +XXX,XX @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp) * the CPU state struct so it won't get zeroed on reset. */ set_float_2nan_prop_rule(float_2nan_prop_s_ba, &env->fp_status); + /* For fused-multiply add, prefer SNaN over QNaN, then C->B->A */ + set_float_3nan_prop_rule(float_3nan_prop_s_cba, &env->fp_status); /* For inf * 0 + NaN, return the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } else { rule = float_3nan_prop_s_cab; } -#elif defined(TARGET_SPARC) - rule = float_3nan_prop_s_cba; #elif defined(TARGET_XTENSA) if (status->use_first_nan) { rule = float_3nan_prop_abc; -- 2.34.1 Set the Float3NaNPropRule explicitly for Arm, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-23-peter.maydell@linaro.org --- target/mips/fpu_helper.h | 4 ++++ target/mips/msa.c | 3 +++ fpu/softfloat-specialize.c.inc | 8 +------- 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/target/mips/fpu_helper.h b/target/mips/fpu_helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/mips/fpu_helper.h +++ b/target/mips/fpu_helper.h @@ -XXX,XX +XXX,XX @@ static inline void restore_snan_bit_mode(CPUMIPSState *env) { bool nan2008 = env->active_fpu.fcr31 & (1 << FCR31_NAN2008); FloatInfZeroNaNRule izn_rule; + Float3NaNPropRule nan3_rule; /* * With nan2008, SNaNs are silenced in the usual way. @@ -XXX,XX +XXX,XX @@ static inline void restore_snan_bit_mode(CPUMIPSState *env) */ izn_rule = nan2008 ? float_infzeronan_dnan_never : float_infzeronan_dnan_always; set_float_infzeronan_rule(izn_rule, &env->active_fpu.fp_status); + nan3_rule = nan2008 ? float_3nan_prop_s_cab : float_3nan_prop_s_abc; + set_float_3nan_prop_rule(nan3_rule, &env->active_fpu.fp_status); + } static inline void restore_fp_status(CPUMIPSState *env) diff --git a/target/mips/msa.c b/target/mips/msa.c index XXXXXXX..XXXXXXX 100644 --- a/target/mips/msa.c +++ b/target/mips/msa.c @@ -XXX,XX +XXX,XX @@ void msa_reset(CPUMIPSState *env) set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->active_tc.msa_fp_status); + set_float_3nan_prop_rule(float_3nan_prop_s_cab, + &env->active_tc.msa_fp_status); + /* clear float_status exception flags */ set_float_exception_flags(0, &env->active_tc.msa_fp_status); diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } if (rule == float_3nan_prop_none) { -#if defined(TARGET_MIPS) - if (snan_bit_is_one(status)) { - rule = float_3nan_prop_s_abc; - } else { - rule = float_3nan_prop_s_cab; - } -#elif defined(TARGET_XTENSA) +#if defined(TARGET_XTENSA) if (status->use_first_nan) { rule = float_3nan_prop_abc; } else { -- 2.34.1 Set the Float3NaNPropRule explicitly for xtensa, and remove the ifdef from pickNaNMulAdd(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-24-peter.maydell@linaro.org --- target/xtensa/fpu_helper.c | 2 ++ fpu/softfloat-specialize.c.inc | 8 -------- 2 files changed, 2 insertions(+), 8 deletions(-) diff --git a/target/xtensa/fpu_helper.c b/target/xtensa/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/xtensa/fpu_helper.c +++ b/target/xtensa/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void xtensa_use_first_nan(CPUXtensaState *env, bool use_first) set_use_first_nan(use_first, &env->fp_status); set_float_2nan_prop_rule(use_first ? float_2nan_prop_ab : float_2nan_prop_ba, &env->fp_status); + set_float_3nan_prop_rule(use_first ? float_3nan_prop_abc : float_3nan_prop_cba, + &env->fp_status); } void HELPER(wur_fpu2k_fcr)(CPUXtensaState *env, uint32_t v) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } if (rule == float_3nan_prop_none) { -#if defined(TARGET_XTENSA) - if (status->use_first_nan) { - rule = float_3nan_prop_abc; - } else { - rule = float_3nan_prop_cba; - } -#else rule = float_3nan_prop_abc; -#endif } assert(rule != float_3nan_prop_none); -- 2.34.1 Set the Float3NaNPropRule explicitly for i386. We had no i386-specific behaviour in the old ifdef ladder, so we were using the default "prefer a then b then c" fallback; this is actually the correct per-the-spec handling for i386. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-25-peter.maydell@linaro.org --- target/i386/tcg/fpu_helper.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void cpu_init_fp_statuses(CPUX86State *env) * there are multiple input NaNs they are selected in the order a, b, c. */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->sse_status); + set_float_3nan_prop_rule(float_3nan_prop_abc, &env->sse_status); } static inline uint8_t save_exception_flags(CPUX86State *env) -- 2.34.1 Set the Float3NaNPropRule explicitly for HPPA, and remove the ifdef from pickNaNMulAdd(). HPPA is the only target that was using the default branch of the ifdef ladder (other targets either do not use muladd or set default_nan_mode), so we can remove the ifdef fallback entirely now (allowing the "rule not set" case to fall into the default of the switch statement and assert). We add a TODO note that the HPPA rule is probably wrong; this is not a behavioural change for this refactoring. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-26-peter.maydell@linaro.org --- target/hppa/fpu_helper.c | 8 ++++++++ fpu/softfloat-specialize.c.inc | 4 ---- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/target/hppa/fpu_helper.c b/target/hppa/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/hppa/fpu_helper.c +++ b/target/hppa/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(loaded_fr0)(CPUHPPAState *env) * HPPA does note implement a CPU reset method at all... */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &env->fp_status); + /* + * TODO: The HPPA architecture reference only documents its NaN + * propagation rule for 2-operand operations. Testing on real hardware + * might be necessary to confirm whether this order for muladd is correct. + * Not preferring the SNaN is almost certainly incorrect as it diverges + * from the documented rules for 2-operand operations. + */ + set_float_3nan_prop_rule(float_3nan_prop_abc, &env->fp_status); /* For inf * 0 + NaN, return the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, } } - if (rule == float_3nan_prop_none) { - rule = float_3nan_prop_abc; - } - assert(rule != float_3nan_prop_none); if (have_snan && (rule & R_3NAN_SNAN_MASK)) { /* We have at least one SNaN input and should prefer it */ -- 2.34.1 The use_first_nan field in float_status was an xtensa-specific way to select at runtime from two different NaN propagation rules. Now that xtensa is using the target-agnostic NaN propagation rule selection that we've just added, we can remove use_first_nan, because there is no longer any code that reads it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-27-peter.maydell@linaro.org --- include/fpu/softfloat-helpers.h | 5 ----- include/fpu/softfloat-types.h | 1 - target/xtensa/fpu_helper.c | 1 - 3 files changed, 7 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -XXX,XX +XXX,XX @@ static inline void set_snan_bit_is_one(bool val, float_status *status) status->snan_bit_is_one = val; } -static inline void set_use_first_nan(bool val, float_status *status) -{ - status->use_first_nan = val; -} - static inline void set_no_signaling_nans(bool val, float_status *status) { status->no_signaling_nans = val; diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -XXX,XX +XXX,XX @@ typedef struct float_status { * softfloat-specialize.inc.c) */ bool snan_bit_is_one; - bool use_first_nan; bool no_signaling_nans; /* should overflowed results subtract re_bias to its exponent? */ bool rebias_overflow; diff --git a/target/xtensa/fpu_helper.c b/target/xtensa/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/xtensa/fpu_helper.c +++ b/target/xtensa/fpu_helper.c @@ -XXX,XX +XXX,XX @@ static const struct { void xtensa_use_first_nan(CPUXtensaState *env, bool use_first) { - set_use_first_nan(use_first, &env->fp_status); set_float_2nan_prop_rule(use_first ? float_2nan_prop_ab : float_2nan_prop_ba, &env->fp_status); set_float_3nan_prop_rule(use_first ? float_3nan_prop_abc : float_3nan_prop_cba, -- 2.34.1 Currently m68k_cpu_reset_hold() calls floatx80_default_nan(NULL) to get the NaN bit pattern to reset the FPU registers. This works because it happens that our implementation of floatx80_default_nan() doesn't actually look at the float_status pointer except for TARGET_MIPS. However, this isn't guaranteed, and to be able to remove the ifdef in floatx80_default_nan() we're going to need a real float_status here. Rearrange m68k_cpu_reset_hold() so that we initialize env->fp_status earlier, and thus can pass it to floatx80_default_nan(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-28-peter.maydell@linaro.org --- target/m68k/cpu.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -XXX,XX +XXX,XX @@ static void m68k_cpu_reset_hold(Object *obj, ResetType type) CPUState *cs = CPU(obj); M68kCPUClass *mcc = M68K_CPU_GET_CLASS(obj); CPUM68KState *env = cpu_env(cs); - floatx80 nan = floatx80_default_nan(NULL); + floatx80 nan; int i; if (mcc->parent_phases.hold) { @@ -XXX,XX +XXX,XX @@ static void m68k_cpu_reset_hold(Object *obj, ResetType type) #else cpu_m68k_set_sr(env, SR_S | SR_I); #endif - for (i = 0; i < 8; i++) { - env->fregs[i].d = nan; - } - cpu_m68k_set_fpcr(env, 0); /* * M68000 FAMILY PROGRAMMER'S REFERENCE MANUAL * 3.4 FLOATING-POINT INSTRUCTION DETAILS @@ -XXX,XX +XXX,XX @@ static void m68k_cpu_reset_hold(Object *obj, ResetType type) * preceding paragraph for nonsignaling NaNs. */ set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); + + nan = floatx80_default_nan(&env->fp_status); + for (i = 0; i < 8; i++) { + env->fregs[i].d = nan; + } + cpu_m68k_set_fpcr(env, 0); env->fpsr = 0; /* TODO: We should set PC from the interrupt vector. */ -- 2.34.1 We create our 128-bit default NaN by calling parts64_default_nan() and then adjusting the result. We can do the same trick for creating the floatx80 default NaN, which lets us drop a target ifdef. floatx80 is used only by: i386 m68k arm nwfpe old floating-point emulation emulation support (which is essentially dead, especially the parts involving floatx80) PPC (only in the xsrqpxp instruction, which just rounds an input value by converting to floatx80 and back, so will never generate the default NaN) The floatx80 default NaN as currently implemented is: m68k: sign = 0, exp = 1...1, int = 1, frac = 1....1 i386: sign = 1, exp = 1...1, int = 1, frac = 10...0 These are the same as the parts64_default_nan for these architectures. This is technically a possible behaviour change for arm linux-user nwfpe emulation emulation, because the default NaN will now have the sign bit clear. But we were already generating a different floatx80 default NaN from the real kernel emulation we are supposedly following, which appears to use an all-bits-1 value: https://elixir.bootlin.com/linux/v6.12/source/arch/arm/nwfpe/softfloat-specialize#L267 This won't affect the only "real" use of the nwfpe emulation, which is ancient binaries that used it as part of the old floating point calling convention; that only uses loads and stores of 32 and 64 bit floats, not any of the floatx80 behaviour the original hardware had. We also get the nwfpe float64 default NaN value wrong: https://elixir.bootlin.com/linux/v6.12/source/arch/arm/nwfpe/softfloat-specialize#L166 so if we ever cared about this obscure corner the right fix would be to correct that so nwfpe used its own default-NaN setting rather than the Arm VFP one. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-29-peter.maydell@linaro.org --- fpu/softfloat-specialize.c.inc | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts128_silence_nan(FloatParts128 *p, float_status *status) floatx80 floatx80_default_nan(float_status *status) { floatx80 r; + /* + * Extrapolate from the choices made by parts64_default_nan to fill + * in the floatx80 format. We assume that floatx80's explicit + * integer bit is always set (this is true for i386 and m68k, + * which are the only real users of this format). + */ + FloatParts64 p64; + parts64_default_nan(&p64, status); - /* None of the targets that have snan_bit_is_one use floatx80. */ - assert(!snan_bit_is_one(status)); -#if defined(TARGET_M68K) - r.low = UINT64_C(0xFFFFFFFFFFFFFFFF); - r.high = 0x7FFF; -#else - /* X86 */ - r.low = UINT64_C(0xC000000000000000); - r.high = 0xFFFF; -#endif + r.high = 0x7FFF | (p64.sign << 15); + r.low = (1ULL << DECOMPOSED_BINARY_POINT) | p64.frac; return r; } -- 2.34.1 In target/loongarch's helper_fclass_s() and helper_fclass_d() we pass a zero-initialized float_status struct to float32_is_quiet_nan() and float64_is_quiet_nan(), with the cryptic comment "for snan_bit_is_one". This pattern appears to have been copied from target/riscv, where it is used because the functions there do not have ready access to the CPU state struct. The comment presumably refers to the fact that the main reason the is_quiet_nan() functions want the float_state is because they want to know about the snan_bit_is_one config. In the loongarch helpers, though, we have the CPU state struct to hand. Use the usual env->fp_status here. This avoids our needing to track that we need to update the initializer of the local float_status structs when the core softfloat code adds new options for targets to configure their behaviour. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-30-peter.maydell@linaro.org --- target/loongarch/tcg/fpu_helper.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/target/loongarch/tcg/fpu_helper.c b/target/loongarch/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/loongarch/tcg/fpu_helper.c +++ b/target/loongarch/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ uint64_t helper_fclass_s(CPULoongArchState *env, uint64_t fj) } else if (float32_is_zero_or_denormal(f)) { return sign ? 1 << 4 : 1 << 8; } else if (float32_is_any_nan(f)) { - float_status s = { }; /* for snan_bit_is_one */ - return float32_is_quiet_nan(f, &s) ? 1 << 1 : 1 << 0; + return float32_is_quiet_nan(f, &env->fp_status) ? 1 << 1 : 1 << 0; } else { return sign ? 1 << 3 : 1 << 7; } @@ -XXX,XX +XXX,XX @@ uint64_t helper_fclass_d(CPULoongArchState *env, uint64_t fj) } else if (float64_is_zero_or_denormal(f)) { return sign ? 1 << 4 : 1 << 8; } else if (float64_is_any_nan(f)) { - float_status s = { }; /* for snan_bit_is_one */ - return float64_is_quiet_nan(f, &s) ? 1 << 1 : 1 << 0; + return float64_is_quiet_nan(f, &env->fp_status) ? 1 << 1 : 1 << 0; } else { return sign ? 1 << 3 : 1 << 7; } -- 2.34.1 In the frem helper, we have a local float_status because we want to execute the floatx80_div() with a custom rounding mode. Instead of zero-initializing the local float_status and then having to set it up with the m68k standard behaviour (including the NaN propagation rule and copying the rounding precision from env->fp_status), initialize it as a complete copy of env->fp_status. This will avoid our having to add new code in this function for every new config knob we add to fp_status. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-31-peter.maydell@linaro.org --- target/m68k/fpu_helper.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(frem)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) fp_rem = floatx80_rem(val1->d, val0->d, &env->fp_status); if (!floatx80_is_any_nan(fp_rem)) { - float_status fp_status = { }; + /* Use local temporary fp_status to set different rounding mode */ + float_status fp_status = env->fp_status; uint32_t quotient; int sign; /* Calculate quotient directly using round to nearest mode */ - set_float_2nan_prop_rule(float_2nan_prop_ab, &fp_status); set_float_rounding_mode(float_round_nearest_even, &fp_status); - set_floatx80_rounding_precision( - get_floatx80_rounding_precision(&env->fp_status), &fp_status); fp_quot.d = floatx80_div(val1->d, val0->d, &fp_status); sign = extractFloatx80Sign(fp_quot.d); -- 2.34.1 In cf_fpu_gdb_get_reg() and cf_fpu_gdb_set_reg() we do the conversion from float64 to floatx80 using a scratch float_status, because we don't want the conversion to affect the CPU's floating point exception status. Currently we use a zero-initialized float_status. This will get steadily more awkward as we add config knobs to float_status that the target must initialize. Avoid having to add any of that configuration here by instead initializing our local float_status from the env->fp_status. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-32-peter.maydell@linaro.org --- target/m68k/helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/m68k/helper.c b/target/m68k/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/m68k/helper.c +++ b/target/m68k/helper.c @@ -XXX,XX +XXX,XX @@ static int cf_fpu_gdb_get_reg(CPUState *cs, GByteArray *mem_buf, int n) CPUM68KState *env = &cpu->env; if (n < 8) { - float_status s = {}; + /* Use scratch float_status so any exceptions don't change CPU state */ + float_status s = env->fp_status; return gdb_get_reg64(mem_buf, floatx80_to_float64(env->fregs[n].d, &s)); } switch (n) { @@ -XXX,XX +XXX,XX @@ static int cf_fpu_gdb_set_reg(CPUState *cs, uint8_t *mem_buf, int n) CPUM68KState *env = &cpu->env; if (n < 8) { - float_status s = {}; + /* Use scratch float_status so any exceptions don't change CPU state */ + float_status s = env->fp_status; env->fregs[n].d = float64_to_floatx80(ldq_be_p(mem_buf), &s); return 8; } -- 2.34.1 In the helper functions flcmps and flcmpd we use a scratch float_status so that we don't change the CPU state if the comparison raises any floating point exception flags. Instead of zero-initializing this scratch float_status, initialize it as a copy of env->fp_status. This avoids the need to explicitly initialize settings like the NaN propagation rule or others we might add to softfloat in future. To do this we need to pass the CPU env pointer in to the helper. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-33-peter.maydell@linaro.org --- target/sparc/helper.h | 4 ++-- target/sparc/fop_helper.c | 8 ++++---- target/sparc/translate.c | 4 ++-- 3 files changed, 8 insertions(+), 8 deletions(-) diff --git a/target/sparc/helper.h b/target/sparc/helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/helper.h +++ b/target/sparc/helper.h @@ -XXX,XX +XXX,XX @@ DEF_HELPER_FLAGS_3(fcmpd, TCG_CALL_NO_WG, i32, env, f64, f64) DEF_HELPER_FLAGS_3(fcmped, TCG_CALL_NO_WG, i32, env, f64, f64) DEF_HELPER_FLAGS_3(fcmpq, TCG_CALL_NO_WG, i32, env, i128, i128) DEF_HELPER_FLAGS_3(fcmpeq, TCG_CALL_NO_WG, i32, env, i128, i128) -DEF_HELPER_FLAGS_2(flcmps, TCG_CALL_NO_RWG_SE, i32, f32, f32) -DEF_HELPER_FLAGS_2(flcmpd, TCG_CALL_NO_RWG_SE, i32, f64, f64) +DEF_HELPER_FLAGS_3(flcmps, TCG_CALL_NO_RWG_SE, i32, env, f32, f32) +DEF_HELPER_FLAGS_3(flcmpd, TCG_CALL_NO_RWG_SE, i32, env, f64, f64) DEF_HELPER_2(raise_exception, noreturn, env, int) DEF_HELPER_FLAGS_3(faddd, TCG_CALL_NO_WG, f64, env, f64, f64) diff --git a/target/sparc/fop_helper.c b/target/sparc/fop_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/fop_helper.c +++ b/target/sparc/fop_helper.c @@ -XXX,XX +XXX,XX @@ uint32_t helper_fcmpeq(CPUSPARCState *env, Int128 src1, Int128 src2) return finish_fcmp(env, r, GETPC()); } -uint32_t helper_flcmps(float32 src1, float32 src2) +uint32_t helper_flcmps(CPUSPARCState *env, float32 src1, float32 src2) { /* * FLCMP never raises an exception nor modifies any FSR fields. * Perform the comparison with a dummy fp environment. */ - float_status discard = { }; + float_status discard = env->fp_status; FloatRelation r; set_float_2nan_prop_rule(float_2nan_prop_s_ba, &discard); @@ -XXX,XX +XXX,XX @@ uint32_t helper_flcmps(float32 src1, float32 src2) g_assert_not_reached(); } -uint32_t helper_flcmpd(float64 src1, float64 src2) +uint32_t helper_flcmpd(CPUSPARCState *env, float64 src1, float64 src2) { - float_status discard = { }; + float_status discard = env->fp_status; FloatRelation r; set_float_2nan_prop_rule(float_2nan_prop_s_ba, &discard); diff --git a/target/sparc/translate.c b/target/sparc/translate.c index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -XXX,XX +XXX,XX @@ static bool trans_FLCMPs(DisasContext *dc, arg_FLCMPs *a) src1 = gen_load_fpr_F(dc, a->rs1); src2 = gen_load_fpr_F(dc, a->rs2); - gen_helper_flcmps(cpu_fcc[a->cc], src1, src2); + gen_helper_flcmps(cpu_fcc[a->cc], tcg_env, src1, src2); return advance_pc(dc); } @@ -XXX,XX +XXX,XX @@ static bool trans_FLCMPd(DisasContext *dc, arg_FLCMPd *a) src1 = gen_load_fpr_D(dc, a->rs1); src2 = gen_load_fpr_D(dc, a->rs2); - gen_helper_flcmpd(cpu_fcc[a->cc], src1, src2); + gen_helper_flcmpd(cpu_fcc[a->cc], tcg_env, src1, src2); return advance_pc(dc); } -- 2.34.1 In the helper_compute_fprf functions, we pass a dummy float_status in to the is_signaling_nan() function. This is unnecessary, because we have convenient access to the CPU env pointer here and that is already set up with the correct values for the snan_bit_is_one and no_signaling_nans config settings. is_signaling_nan() doesn't ever update the fp_status with any exception flags, so there is no reason not to use env->fp_status here. Use env->fp_status instead of the dummy fp_status. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-34-peter.maydell@linaro.org --- target/ppc/fpu_helper.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void helper_compute_fprf_##tp(CPUPPCState *env, tp arg) \ } else if (tp##_is_infinity(arg)) { \ fprf = neg ? 0x09 << FPSCR_FPRF : 0x05 << FPSCR_FPRF; \ } else { \ - float_status dummy = { }; /* snan_bit_is_one = 0 */ \ - if (tp##_is_signaling_nan(arg, &dummy)) { \ + if (tp##_is_signaling_nan(arg, &env->fp_status)) { \ fprf = 0x00 << FPSCR_FPRF; \ } else { \ fprf = 0x11 << FPSCR_FPRF; \ -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Now that float_status has a bunch of fp parameters, it is easier to copy an existing structure than create one from scratch. Begin by copying the structure that corresponds to the FPSR and make only the adjustments required for BFloat16 semantics. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241203203949.483774-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/tcg/vec_helper.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) diff --git a/target/arm/tcg/vec_helper.c b/target/arm/tcg/vec_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/tcg/vec_helper.c +++ b/target/arm/tcg/vec_helper.c @@ -XXX,XX +XXX,XX @@ bool is_ebf(CPUARMState *env, float_status *statusp, float_status *oddstatusp) * no effect on AArch32 instructions. */ bool ebf = is_a64(env) && env->vfp.fpcr & FPCR_EBF; - *statusp = (float_status){ - .tininess_before_rounding = float_tininess_before_rounding, - .float_rounding_mode = float_round_to_odd_inf, - .flush_to_zero = true, - .flush_inputs_to_zero = true, - .default_nan_mode = true, - }; + + *statusp = env->vfp.fp_status; + set_default_nan_mode(true, statusp); if (ebf) { - float_status *fpst = &env->vfp.fp_status; - set_flush_to_zero(get_flush_to_zero(fpst), statusp); - set_flush_inputs_to_zero(get_flush_inputs_to_zero(fpst), statusp); - set_float_rounding_mode(get_float_rounding_mode(fpst), statusp); - /* EBF=1 needs to do a step with round-to-odd semantics */ *oddstatusp = *statusp; set_float_rounding_mode(float_round_to_odd, oddstatusp); + } else { + set_flush_to_zero(true, statusp); + set_flush_inputs_to_zero(true, statusp); + set_float_rounding_mode(float_round_to_odd_inf, statusp); } - return ebf; } -- 2.34.1 Currently we hardcode the default NaN value in parts64_default_nan() using a compile-time ifdef ladder. This is awkward for two cases: * for single-QEMU-binary we can't hard-code target-specifics like this * for Arm FEAT_AFP the default NaN value depends on FPCR.AH (specifically the sign bit is different) Add a field to float_status to specify the default NaN value; fall back to the old ifdef behaviour if these are not set. The default NaN value is specified by setting a uint8_t to a pattern corresponding to the sign and upper fraction parts of the NaN; the lower bits of the fraction are set from bit 0 of the pattern. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-35-peter.maydell@linaro.org --- include/fpu/softfloat-helpers.h | 11 +++++++ include/fpu/softfloat-types.h | 10 ++++++ fpu/softfloat-specialize.c.inc | 55 ++++++++++++++++++++------------- 3 files changed, 54 insertions(+), 22 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -XXX,XX +XXX,XX @@ static inline void set_float_infzeronan_rule(FloatInfZeroNaNRule rule, status->float_infzeronan_rule = rule; } +static inline void set_float_default_nan_pattern(uint8_t dnan_pattern, + float_status *status) +{ + status->default_nan_pattern = dnan_pattern; +} + static inline void set_flush_to_zero(bool val, float_status *status) { status->flush_to_zero = val; @@ -XXX,XX +XXX,XX @@ static inline FloatInfZeroNaNRule get_float_infzeronan_rule(float_status *status return status->float_infzeronan_rule; } +static inline uint8_t get_float_default_nan_pattern(float_status *status) +{ + return status->default_nan_pattern; +} + static inline bool get_flush_to_zero(float_status *status) { return status->flush_to_zero; diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index XXXXXXX..XXXXXXX 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -XXX,XX +XXX,XX @@ typedef struct float_status { /* should denormalised inputs go to zero and set the input_denormal flag? */ bool flush_inputs_to_zero; bool default_nan_mode; + /* + * The pattern to use for the default NaN. Here the high bit specifies + * the default NaN's sign bit, and bits 6..0 specify the high bits of the + * fractional part. The low bits of the fractional part are copies of bit 0. + * The exponent of the default NaN is (as for any NaN) always all 1s. + * Note that a value of 0 here is not a valid NaN. The target must set + * this to the correct non-zero value, or we will assert when trying to + * create a default NaN. + */ + uint8_t default_nan_pattern; /* * The flags below are not used on all specializations and may * constant fold away (see snan_bit_is_one()/no_signalling_nans() in diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) { bool sign = 0; uint64_t frac; + uint8_t dnan_pattern = status->default_nan_pattern; + if (dnan_pattern == 0) { #if defined(TARGET_SPARC) || defined(TARGET_M68K) - /* !snan_bit_is_one, set all bits */ - frac = (1ULL << DECOMPOSED_BINARY_POINT) - 1; -#elif defined(TARGET_I386) || defined(TARGET_X86_64) \ + /* Sign bit clear, all frac bits set */ + dnan_pattern = 0b01111111; +#elif defined(TARGET_I386) || defined(TARGET_X86_64) \ || defined(TARGET_MICROBLAZE) - /* !snan_bit_is_one, set sign and msb */ - frac = 1ULL << (DECOMPOSED_BINARY_POINT - 1); - sign = 1; + /* Sign bit set, most significant frac bit set */ + dnan_pattern = 0b11000000; #elif defined(TARGET_HPPA) - /* snan_bit_is_one, set msb-1. */ - frac = 1ULL << (DECOMPOSED_BINARY_POINT - 2); + /* Sign bit clear, msb-1 frac bit set */ + dnan_pattern = 0b00100000; #elif defined(TARGET_HEXAGON) - sign = 1; - frac = ~0ULL; + /* Sign bit set, all frac bits set. */ + dnan_pattern = 0b11111111; #else - /* - * This case is true for Alpha, ARM, MIPS, OpenRISC, PPC, RISC-V, - * S390, SH4, TriCore, and Xtensa. Our other supported targets - * do not have floating-point. - */ - if (snan_bit_is_one(status)) { - /* set all bits other than msb */ - frac = (1ULL << (DECOMPOSED_BINARY_POINT - 1)) - 1; - } else { - /* set msb */ - frac = 1ULL << (DECOMPOSED_BINARY_POINT - 1); - } + /* + * This case is true for Alpha, ARM, MIPS, OpenRISC, PPC, RISC-V, + * S390, SH4, TriCore, and Xtensa. Our other supported targets + * do not have floating-point. + */ + if (snan_bit_is_one(status)) { + /* sign bit clear, set all frac bits other than msb */ + dnan_pattern = 0b00111111; + } else { + /* sign bit clear, set frac msb */ + dnan_pattern = 0b01000000; + } #endif + } + assert(dnan_pattern != 0); + + sign = dnan_pattern >> 7; + /* + * Place default_nan_pattern [6:0] into bits [62:56], + * and replecate bit [0] down into [55:0] + */ + frac = deposit64(0, DECOMPOSED_BINARY_POINT - 7, 7, dnan_pattern); + frac = deposit64(frac, 0, DECOMPOSED_BINARY_POINT - 7, -(dnan_pattern & 1)); *p = (FloatParts64) { .cls = float_class_qnan, -- 2.34.1 Set the default NaN pattern explicitly for the tests/fp code. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-36-peter.maydell@linaro.org --- tests/fp/fp-bench.c | 1 + tests/fp/fp-test-log2.c | 1 + tests/fp/fp-test.c | 1 + 3 files changed, 3 insertions(+) diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-bench.c +++ b/tests/fp/fp-bench.c @@ -XXX,XX +XXX,XX @@ static void run_bench(void) set_float_2nan_prop_rule(float_2nan_prop_s_ab, &soft_status); set_float_3nan_prop_rule(float_3nan_prop_s_cab, &soft_status); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &soft_status); + set_float_default_nan_pattern(0b01000000, &soft_status); f = bench_funcs[operation][precision]; g_assert(f); diff --git a/tests/fp/fp-test-log2.c b/tests/fp/fp-test-log2.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-test-log2.c +++ b/tests/fp/fp-test-log2.c @@ -XXX,XX +XXX,XX @@ int main(int ac, char **av) int i; set_float_2nan_prop_rule(float_2nan_prop_s_ab, &qsf); + set_float_default_nan_pattern(0b01000000, &qsf); set_float_rounding_mode(float_round_nearest_even, &qsf); test.d = 0.0; diff --git a/tests/fp/fp-test.c b/tests/fp/fp-test.c index XXXXXXX..XXXXXXX 100644 --- a/tests/fp/fp-test.c +++ b/tests/fp/fp-test.c @@ -XXX,XX +XXX,XX @@ void run_test(void) */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &qsf); set_float_3nan_prop_rule(float_3nan_prop_s_cab, &qsf); + set_float_default_nan_pattern(0b01000000, &qsf); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, &qsf); genCases_setLevel(test_level); -- 2.34.1 Set the default NaN pattern explicitly, and remove the ifdef from parts64_default_nan(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-37-peter.maydell@linaro.org --- target/microblaze/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 3 +-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -XXX,XX +XXX,XX @@ static void mb_cpu_reset_hold(Object *obj, ResetType type) * this architecture. */ set_float_2nan_prop_rule(float_2nan_prop_x87, &env->fp_status); + /* Default NaN: sign bit set, most significant frac bit set */ + set_float_default_nan_pattern(0b11000000, &env->fp_status); #if defined(CONFIG_USER_ONLY) /* start in user mode with interrupts enabled. */ diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) #if defined(TARGET_SPARC) || defined(TARGET_M68K) /* Sign bit clear, all frac bits set */ dnan_pattern = 0b01111111; -#elif defined(TARGET_I386) || defined(TARGET_X86_64) \ - || defined(TARGET_MICROBLAZE) +#elif defined(TARGET_I386) || defined(TARGET_X86_64) /* Sign bit set, most significant frac bit set */ dnan_pattern = 0b11000000; #elif defined(TARGET_HPPA) -- 2.34.1 Set the default NaN pattern explicitly, and remove the ifdef from parts64_default_nan(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-38-peter.maydell@linaro.org --- target/i386/tcg/fpu_helper.c | 4 ++++ fpu/softfloat-specialize.c.inc | 3 --- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void cpu_init_fp_statuses(CPUX86State *env) */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->sse_status); set_float_3nan_prop_rule(float_3nan_prop_abc, &env->sse_status); + /* Default NaN: sign bit set, most significant frac bit set */ + set_float_default_nan_pattern(0b11000000, &env->fp_status); + set_float_default_nan_pattern(0b11000000, &env->mmx_status); + set_float_default_nan_pattern(0b11000000, &env->sse_status); } static inline uint8_t save_exception_flags(CPUX86State *env) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) #if defined(TARGET_SPARC) || defined(TARGET_M68K) /* Sign bit clear, all frac bits set */ dnan_pattern = 0b01111111; -#elif defined(TARGET_I386) || defined(TARGET_X86_64) - /* Sign bit set, most significant frac bit set */ - dnan_pattern = 0b11000000; #elif defined(TARGET_HPPA) /* Sign bit clear, msb-1 frac bit set */ dnan_pattern = 0b00100000; -- 2.34.1 Set the default NaN pattern explicitly, and remove the ifdef from parts64_default_nan(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-39-peter.maydell@linaro.org --- target/hppa/fpu_helper.c | 2 ++ fpu/softfloat-specialize.c.inc | 3 --- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/target/hppa/fpu_helper.c b/target/hppa/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/hppa/fpu_helper.c +++ b/target/hppa/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void HELPER(loaded_fr0)(CPUHPPAState *env) set_float_3nan_prop_rule(float_3nan_prop_abc, &env->fp_status); /* For inf * 0 + NaN, return the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); + /* Default NaN: sign bit clear, msb-1 frac bit set */ + set_float_default_nan_pattern(0b00100000, &env->fp_status); } void cpu_hppa_loaded_fr0(CPUHPPAState *env) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) #if defined(TARGET_SPARC) || defined(TARGET_M68K) /* Sign bit clear, all frac bits set */ dnan_pattern = 0b01111111; -#elif defined(TARGET_HPPA) - /* Sign bit clear, msb-1 frac bit set */ - dnan_pattern = 0b00100000; #elif defined(TARGET_HEXAGON) /* Sign bit set, all frac bits set. */ dnan_pattern = 0b11111111; -- 2.34.1 Set the default NaN pattern explicitly for the alpha target. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-40-peter.maydell@linaro.org --- target/alpha/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/alpha/cpu.c +++ b/target/alpha/cpu.c @@ -XXX,XX +XXX,XX @@ static void alpha_cpu_initfn(Object *obj) * operand in Fa. That is float_2nan_prop_ba. */ set_float_2nan_prop_rule(float_2nan_prop_x87, &env->fp_status); + /* Default NaN: sign bit clear, msb frac bit set */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); #if defined(CONFIG_USER_ONLY) env->flags = ENV_FLAG_PS_USER | ENV_FLAG_FEN; cpu_alpha_store_fpcr(env, (uint64_t)(FPCR_INVD | FPCR_DZED | FPCR_OVFD -- 2.34.1 Set the default NaN pattern explicitly for the arm target. This includes setting it for the old linux-user nwfpe emulation. For nwfpe, our default doesn't match the real kernel, but we avoid making a behaviour change in this commit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-41-peter.maydell@linaro.org --- linux-user/arm/nwfpe/fpa11.c | 5 +++++ target/arm/cpu.c | 2 ++ 2 files changed, 7 insertions(+) diff --git a/linux-user/arm/nwfpe/fpa11.c b/linux-user/arm/nwfpe/fpa11.c index XXXXXXX..XXXXXXX 100644 --- a/linux-user/arm/nwfpe/fpa11.c +++ b/linux-user/arm/nwfpe/fpa11.c @@ -XXX,XX +XXX,XX @@ void resetFPA11(void) * this late date. */ set_float_2nan_prop_rule(float_2nan_prop_s_ab, &fpa11->fp_status); + /* + * Use the same default NaN value as Arm VFP. This doesn't match + * the Linux kernel's nwfpe emulation, which uses an all-1s value. + */ + set_float_default_nan_pattern(0b01000000, &fpa11->fp_status); } void SetRoundingMode(const unsigned int opcode) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -XXX,XX +XXX,XX @@ void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, * the pseudocode function the arguments are in the order c, a, b. * * 0 * Inf + NaN returns the default NaN if the input NaN is quiet, * and the input NaN if it is signalling + * * Default NaN has sign bit clear, msb frac bit set */ static void arm_set_default_fp_behaviours(float_status *s) { @@ -XXX,XX +XXX,XX @@ static void arm_set_default_fp_behaviours(float_status *s) set_float_2nan_prop_rule(float_2nan_prop_s_ab, s); set_float_3nan_prop_rule(float_3nan_prop_s_cab, s); set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, s); + set_float_default_nan_pattern(0b01000000, s); } static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque) -- 2.34.1 Set the default NaN pattern explicitly for loongarch. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-42-peter.maydell@linaro.org --- target/loongarch/tcg/fpu_helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/loongarch/tcg/fpu_helper.c b/target/loongarch/tcg/fpu_helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/loongarch/tcg/fpu_helper.c +++ b/target/loongarch/tcg/fpu_helper.c @@ -XXX,XX +XXX,XX @@ void restore_fp_status(CPULoongArchState *env) */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); set_float_3nan_prop_rule(float_3nan_prop_s_cab, &env->fp_status); + /* Default NaN: sign bit clear, msb frac bit set */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); } int ieee_ex_to_loongarch(int xcpt) -- 2.34.1 Set the default NaN pattern explicitly for m68k. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-43-peter.maydell@linaro.org --- target/m68k/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/m68k/cpu.c +++ b/target/m68k/cpu.c @@ -XXX,XX +XXX,XX @@ static void m68k_cpu_reset_hold(Object *obj, ResetType type) * preceding paragraph for nonsignaling NaNs. */ set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); + /* Default NaN: sign bit clear, all frac bits set */ + set_float_default_nan_pattern(0b01111111, &env->fp_status); nan = floatx80_default_nan(&env->fp_status); for (i = 0; i < 8; i++) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) uint8_t dnan_pattern = status->default_nan_pattern; if (dnan_pattern == 0) { -#if defined(TARGET_SPARC) || defined(TARGET_M68K) +#if defined(TARGET_SPARC) /* Sign bit clear, all frac bits set */ dnan_pattern = 0b01111111; #elif defined(TARGET_HEXAGON) -- 2.34.1 Set the default NaN pattern explicitly for MIPS. Note that this is our only target which currently changes the default NaN at runtime (which it was previously doing indirectly when it changed the snan_bit_is_one setting). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-44-peter.maydell@linaro.org --- target/mips/fpu_helper.h | 7 +++++++ target/mips/msa.c | 3 +++ 2 files changed, 10 insertions(+) diff --git a/target/mips/fpu_helper.h b/target/mips/fpu_helper.h index XXXXXXX..XXXXXXX 100644 --- a/target/mips/fpu_helper.h +++ b/target/mips/fpu_helper.h @@ -XXX,XX +XXX,XX @@ static inline void restore_snan_bit_mode(CPUMIPSState *env) set_float_infzeronan_rule(izn_rule, &env->active_fpu.fp_status); nan3_rule = nan2008 ? float_3nan_prop_s_cab : float_3nan_prop_s_abc; set_float_3nan_prop_rule(nan3_rule, &env->active_fpu.fp_status); + /* + * With nan2008, the default NaN value has the sign bit clear and the + * frac msb set; with the older mode, the sign bit is clear, and all + * frac bits except the msb are set. + */ + set_float_default_nan_pattern(nan2008 ? 0b01000000 : 0b00111111, + &env->active_fpu.fp_status); } diff --git a/target/mips/msa.c b/target/mips/msa.c index XXXXXXX..XXXXXXX 100644 --- a/target/mips/msa.c +++ b/target/mips/msa.c @@ -XXX,XX +XXX,XX @@ void msa_reset(CPUMIPSState *env) /* Inf * 0 + NaN returns the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->active_tc.msa_fp_status); + /* Default NaN: sign bit clear, frac msb set */ + set_float_default_nan_pattern(0b01000000, + &env->active_tc.msa_fp_status); } -- 2.34.1 Set the default NaN pattern explicitly for openrisc. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-45-peter.maydell@linaro.org --- target/openrisc/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/openrisc/cpu.c +++ b/target/openrisc/cpu.c @@ -XXX,XX +XXX,XX @@ static void openrisc_cpu_reset_hold(Object *obj, ResetType type) */ set_float_2nan_prop_rule(float_2nan_prop_x87, &cpu->env.fp_status); + /* Default NaN: sign bit clear, frac msb set */ + set_float_default_nan_pattern(0b01000000, &cpu->env.fp_status); #ifndef CONFIG_USER_ONLY cpu->env.picmr = 0x00000000; -- 2.34.1 Set the default NaN pattern explicitly for ppc. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-46-peter.maydell@linaro.org --- target/ppc/cpu_init.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index XXXXXXX..XXXXXXX 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -XXX,XX +XXX,XX @@ static void ppc_cpu_reset_hold(Object *obj, ResetType type) set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->vec_status); + /* Default NaN: sign bit clear, set frac msb */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); + set_float_default_nan_pattern(0b01000000, &env->vec_status); + for (i = 0; i < ARRAY_SIZE(env->spr_cb); i++) { ppc_spr_t *spr = &env->spr_cb[i]; -- 2.34.1 Set the default NaN pattern explicitly for sh4. Note that sh4 is one of the only three targets (the others being HPPA and sometimes MIPS) that has snan_bit_is_one set. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-47-peter.maydell@linaro.org --- target/sh4/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/sh4/cpu.c +++ b/target/sh4/cpu.c @@ -XXX,XX +XXX,XX @@ static void superh_cpu_reset_hold(Object *obj, ResetType type) set_flush_to_zero(1, &env->fp_status); #endif set_default_nan_mode(1, &env->fp_status); + /* sign bit clear, set all frac bits other than msb */ + set_float_default_nan_pattern(0b00111111, &env->fp_status); } static void superh_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) -- 2.34.1 Set the default NaN pattern explicitly for rx. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-48-peter.maydell@linaro.org --- target/rx/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/rx/cpu.c b/target/rx/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/rx/cpu.c +++ b/target/rx/cpu.c @@ -XXX,XX +XXX,XX @@ static void rx_cpu_reset_hold(Object *obj, ResetType type) * then prefer dest over source", which is float_2nan_prop_s_ab. */ set_float_2nan_prop_rule(float_2nan_prop_x87, &env->fp_status); + /* Default NaN value: sign bit clear, set frac msb */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); } static ObjectClass *rx_cpu_class_by_name(const char *cpu_model) -- 2.34.1 Set the default NaN pattern explicitly for s390x. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-49-peter.maydell@linaro.org --- target/s390x/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -XXX,XX +XXX,XX @@ static void s390_cpu_reset_hold(Object *obj, ResetType type) set_float_3nan_prop_rule(float_3nan_prop_s_abc, &env->fpu_status); set_float_infzeronan_rule(float_infzeronan_dnan_always, &env->fpu_status); + /* Default NaN value: sign bit clear, frac msb set */ + set_float_default_nan_pattern(0b01000000, &env->fpu_status); /* fall through */ case RESET_TYPE_S390_CPU_NORMAL: env->psw.mask &= ~PSW_MASK_RI; -- 2.34.1 Set the default NaN pattern explicitly for SPARC, and remove the ifdef from parts64_default_nan. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-50-peter.maydell@linaro.org --- target/sparc/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 5 +---- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/sparc/cpu.c +++ b/target/sparc/cpu.c @@ -XXX,XX +XXX,XX @@ static void sparc_cpu_realizefn(DeviceState *dev, Error **errp) set_float_3nan_prop_rule(float_3nan_prop_s_cba, &env->fp_status); /* For inf * 0 + NaN, return the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); + /* Default NaN value: sign bit clear, all frac bits set */ + set_float_default_nan_pattern(0b01111111, &env->fp_status); cpu_exec_realizefn(cs, &local_err); if (local_err != NULL) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) uint8_t dnan_pattern = status->default_nan_pattern; if (dnan_pattern == 0) { -#if defined(TARGET_SPARC) - /* Sign bit clear, all frac bits set */ - dnan_pattern = 0b01111111; -#elif defined(TARGET_HEXAGON) +#if defined(TARGET_HEXAGON) /* Sign bit set, all frac bits set. */ dnan_pattern = 0b11111111; #else -- 2.34.1 Set the default NaN pattern explicitly for xtensa. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-51-peter.maydell@linaro.org --- target/xtensa/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/xtensa/cpu.c +++ b/target/xtensa/cpu.c @@ -XXX,XX +XXX,XX @@ static void xtensa_cpu_reset_hold(Object *obj, ResetType type) /* For inf * 0 + NaN, return the input NaN */ set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->fp_status); set_no_signaling_nans(!dfpu, &env->fp_status); + /* Default NaN value: sign bit clear, set frac msb */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); xtensa_use_first_nan(env, !dfpu); } -- 2.34.1 Set the default NaN pattern explicitly for hexagon. Remove the ifdef from parts64_default_nan(); the only remaining unconverted targets all use the default case. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-52-peter.maydell@linaro.org --- target/hexagon/cpu.c | 2 ++ fpu/softfloat-specialize.c.inc | 5 ----- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/hexagon/cpu.c +++ b/target/hexagon/cpu.c @@ -XXX,XX +XXX,XX @@ static void hexagon_cpu_reset_hold(Object *obj, ResetType type) set_default_nan_mode(1, &env->fp_status); set_float_detect_tininess(float_tininess_before_rounding, &env->fp_status); + /* Default NaN value: sign bit set, all frac bits set */ + set_float_default_nan_pattern(0b11111111, &env->fp_status); } static void hexagon_cpu_disas_set_info(CPUState *s, disassemble_info *info) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) uint8_t dnan_pattern = status->default_nan_pattern; if (dnan_pattern == 0) { -#if defined(TARGET_HEXAGON) - /* Sign bit set, all frac bits set. */ - dnan_pattern = 0b11111111; -#else /* * This case is true for Alpha, ARM, MIPS, OpenRISC, PPC, RISC-V, * S390, SH4, TriCore, and Xtensa. Our other supported targets @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) /* sign bit clear, set frac msb */ dnan_pattern = 0b01000000; } -#endif } assert(dnan_pattern != 0); -- 2.34.1 Set the default NaN pattern explicitly for riscv. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-53-peter.maydell@linaro.org --- target/riscv/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index XXXXXXX..XXXXXXX 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -XXX,XX +XXX,XX @@ static void riscv_cpu_reset_hold(Object *obj, ResetType type) cs->exception_index = RISCV_EXCP_NONE; env->load_res = -1; set_default_nan_mode(1, &env->fp_status); + /* Default NaN value: sign bit clear, frac msb set */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); env->vill = true; #ifndef CONFIG_USER_ONLY -- 2.34.1 Set the default NaN pattern explicitly for tricore. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-54-peter.maydell@linaro.org --- target/tricore/helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/tricore/helper.c b/target/tricore/helper.c index XXXXXXX..XXXXXXX 100644 --- a/target/tricore/helper.c +++ b/target/tricore/helper.c @@ -XXX,XX +XXX,XX @@ void fpu_set_state(CPUTriCoreState *env) set_flush_to_zero(1, &env->fp_status); set_float_detect_tininess(float_tininess_before_rounding, &env->fp_status); set_default_nan_mode(1, &env->fp_status); + /* Default NaN pattern: sign bit clear, frac msb set */ + set_float_default_nan_pattern(0b01000000, &env->fp_status); } uint32_t psw_read(CPUTriCoreState *env) -- 2.34.1 Now that all our targets have bene converted to explicitly specify their pattern for the default NaN value we can remove the remaining fallback code in parts64_default_nan(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241202131347.498124-55-peter.maydell@linaro.org --- fpu/softfloat-specialize.c.inc | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static void parts64_default_nan(FloatParts64 *p, float_status *status) uint64_t frac; uint8_t dnan_pattern = status->default_nan_pattern; - if (dnan_pattern == 0) { - /* - * This case is true for Alpha, ARM, MIPS, OpenRISC, PPC, RISC-V, - * S390, SH4, TriCore, and Xtensa. Our other supported targets - * do not have floating-point. - */ - if (snan_bit_is_one(status)) { - /* sign bit clear, set all frac bits other than msb */ - dnan_pattern = 0b00111111; - } else { - /* sign bit clear, set frac msb */ - dnan_pattern = 0b01000000; - } - } assert(dnan_pattern != 0); sign = dnan_pattern >> 7; -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Inline pickNaNMulAdd into its only caller. This makes one assert redundant with the immediately preceding IF. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-3-richard.henderson@linaro.org [PMM: keep comment from old code in new location] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 41 +++++++++++++++++++++++++- fpu/softfloat-specialize.c.inc | 54 ---------------------------------- 2 files changed, 40 insertions(+), 55 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, } if (s->default_nan_mode) { + /* + * We guarantee not to require the target to tell us how to + * pick a NaN if we're always returning the default NaN. + * But if we're not in default-NaN mode then the target must + * specify. + */ which = 3; + } else if (infzero) { + /* + * Inf * 0 + NaN -- some implementations return the + * default NaN here, and some return the input NaN. + */ + switch (s->float_infzeronan_rule) { + case float_infzeronan_dnan_never: + which = 2; + break; + case float_infzeronan_dnan_always: + which = 3; + break; + case float_infzeronan_dnan_if_qnan: + which = is_qnan(c->cls) ? 3 : 2; + break; + default: + g_assert_not_reached(); + } } else { - which = pickNaNMulAdd(a->cls, b->cls, c->cls, infzero, have_snan, s); + FloatClass cls[3] = { a->cls, b->cls, c->cls }; + Float3NaNPropRule rule = s->float_3nan_prop_rule; + + assert(rule != float_3nan_prop_none); + if (have_snan && (rule & R_3NAN_SNAN_MASK)) { + /* We have at least one SNaN input and should prefer it */ + do { + which = rule & R_3NAN_1ST_MASK; + rule >>= R_3NAN_1ST_LENGTH; + } while (!is_snan(cls[which])); + } else { + do { + which = rule & R_3NAN_1ST_MASK; + rule >>= R_3NAN_1ST_LENGTH; + } while (!is_nan(cls[which])); + } } if (which == 3) { diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, } } -/*---------------------------------------------------------------------------- -| Select which NaN to propagate for a three-input operation. -| For the moment we assume that no CPU needs the 'larger significand' -| information. -| Return values : 0 : a; 1 : b; 2 : c; 3 : default-NaN -*----------------------------------------------------------------------------*/ -static int pickNaNMulAdd(FloatClass a_cls, FloatClass b_cls, FloatClass c_cls, - bool infzero, bool have_snan, float_status *status) -{ - FloatClass cls[3] = { a_cls, b_cls, c_cls }; - Float3NaNPropRule rule = status->float_3nan_prop_rule; - int which; - - /* - * We guarantee not to require the target to tell us how to - * pick a NaN if we're always returning the default NaN. - * But if we're not in default-NaN mode then the target must - * specify. - */ - assert(!status->default_nan_mode); - - if (infzero) { - /* - * Inf * 0 + NaN -- some implementations return the default NaN here, - * and some return the input NaN. - */ - switch (status->float_infzeronan_rule) { - case float_infzeronan_dnan_never: - return 2; - case float_infzeronan_dnan_always: - return 3; - case float_infzeronan_dnan_if_qnan: - return is_qnan(c_cls) ? 3 : 2; - default: - g_assert_not_reached(); - } - } - - assert(rule != float_3nan_prop_none); - if (have_snan && (rule & R_3NAN_SNAN_MASK)) { - /* We have at least one SNaN input and should prefer it */ - do { - which = rule & R_3NAN_1ST_MASK; - rule >>= R_3NAN_1ST_LENGTH; - } while (!is_snan(cls[which])); - } else { - do { - which = rule & R_3NAN_1ST_MASK; - rule >>= R_3NAN_1ST_LENGTH; - } while (!is_nan(cls[which])); - } - return which; -} - /*---------------------------------------------------------------------------- | Returns 1 if the double-precision floating-point value `a' is a quiet | NaN; otherwise returns 0. -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Remove "3" as a special case for which and simply branch to return the desired value. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-4-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, * But if we're not in default-NaN mode then the target must * specify. */ - which = 3; + goto default_nan; } else if (infzero) { /* * Inf * 0 + NaN -- some implementations return the @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, */ switch (s->float_infzeronan_rule) { case float_infzeronan_dnan_never: - which = 2; break; case float_infzeronan_dnan_always: - which = 3; - break; + goto default_nan; case float_infzeronan_dnan_if_qnan: - which = is_qnan(c->cls) ? 3 : 2; + if (is_qnan(c->cls)) { + goto default_nan; + } break; default: g_assert_not_reached(); } + which = 2; } else { FloatClass cls[3] = { a->cls, b->cls, c->cls }; Float3NaNPropRule rule = s->float_3nan_prop_rule; @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, } } - if (which == 3) { - parts_default_nan(a, s); - return a; - } - switch (which) { case 0: break; @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, parts_silence_nan(a, s); } return a; + + default_nan: + parts_default_nan(a, s); + return a; } /* -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Assign the pointer return value to 'a' directly, rather than going through an intermediary index. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 32 ++++++++++---------------------- 1 file changed, 10 insertions(+), 22 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, FloatPartsN *c, float_status *s, int ab_mask, int abc_mask) { - int which; bool infzero = (ab_mask == float_cmask_infzero); bool have_snan = (abc_mask & float_cmask_snan); + FloatPartsN *ret; if (unlikely(have_snan)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, default: g_assert_not_reached(); } - which = 2; + ret = c; } else { - FloatClass cls[3] = { a->cls, b->cls, c->cls }; + FloatPartsN *val[3] = { a, b, c }; Float3NaNPropRule rule = s->float_3nan_prop_rule; assert(rule != float_3nan_prop_none); if (have_snan && (rule & R_3NAN_SNAN_MASK)) { /* We have at least one SNaN input and should prefer it */ do { - which = rule & R_3NAN_1ST_MASK; + ret = val[rule & R_3NAN_1ST_MASK]; rule >>= R_3NAN_1ST_LENGTH; - } while (!is_snan(cls[which])); + } while (!is_snan(ret->cls)); } else { do { - which = rule & R_3NAN_1ST_MASK; + ret = val[rule & R_3NAN_1ST_MASK]; rule >>= R_3NAN_1ST_LENGTH; - } while (!is_nan(cls[which])); + } while (!is_nan(ret->cls)); } } - switch (which) { - case 0: - break; - case 1: - a = b; - break; - case 2: - a = c; - break; - default: - g_assert_not_reached(); + if (is_snan(ret->cls)) { + parts_silence_nan(ret, s); } - if (is_snan(a->cls)) { - parts_silence_nan(a, s); - } - return a; + return ret; default_nan: parts_default_nan(a, s); -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> While all indices into val[] should be in [0-2], the mask applied is two bits. To help static analysis see there is no possibility of read beyond the end of the array, pad the array to 4 entries, with the final being (implicitly) NULL. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-6-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, } ret = c; } else { - FloatPartsN *val[3] = { a, b, c }; + FloatPartsN *val[R_3NAN_1ST_MASK + 1] = { a, b, c }; Float3NaNPropRule rule = s->float_3nan_prop_rule; assert(rule != float_3nan_prop_none); -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> This function is part of the public interface and is not "specialized" to any target in any way. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241203203949.483774-7-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat.c | 52 ++++++++++++++++++++++++++++++++++ fpu/softfloat-specialize.c.inc | 52 ---------------------------------- 2 files changed, 52 insertions(+), 52 deletions(-) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -XXX,XX +XXX,XX @@ void normalizeFloatx80Subnormal(uint64_t aSig, int32_t *zExpPtr, *zExpPtr = 1 - shiftCount; } +/*---------------------------------------------------------------------------- +| Takes two extended double-precision floating-point values `a' and `b', one +| of which is a NaN, and returns the appropriate NaN result. If either `a' or +| `b' is a signaling NaN, the invalid exception is raised. +*----------------------------------------------------------------------------*/ + +floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b, float_status *status) +{ + bool aIsLargerSignificand; + FloatClass a_cls, b_cls; + + /* This is not complete, but is good enough for pickNaN. */ + a_cls = (!floatx80_is_any_nan(a) + ? float_class_normal + : floatx80_is_signaling_nan(a, status) + ? float_class_snan + : float_class_qnan); + b_cls = (!floatx80_is_any_nan(b) + ? float_class_normal + : floatx80_is_signaling_nan(b, status) + ? float_class_snan + : float_class_qnan); + + if (is_snan(a_cls) || is_snan(b_cls)) { + float_raise(float_flag_invalid, status); + } + + if (status->default_nan_mode) { + return floatx80_default_nan(status); + } + + if (a.low < b.low) { + aIsLargerSignificand = 0; + } else if (b.low < a.low) { + aIsLargerSignificand = 1; + } else { + aIsLargerSignificand = (a.high < b.high) ? 1 : 0; + } + + if (pickNaN(a_cls, b_cls, aIsLargerSignificand, status)) { + if (is_snan(b_cls)) { + return floatx80_silence_nan(b, status); + } + return b; + } else { + if (is_snan(a_cls)) { + return floatx80_silence_nan(a, status); + } + return a; + } +} + /*---------------------------------------------------------------------------- | Takes an abstract floating-point value having sign `zSign', exponent `zExp', | and extended significand formed by the concatenation of `zSig0' and `zSig1', diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ floatx80 floatx80_silence_nan(floatx80 a, float_status *status) return a; } -/*---------------------------------------------------------------------------- -| Takes two extended double-precision floating-point values `a' and `b', one -| of which is a NaN, and returns the appropriate NaN result. If either `a' or -| `b' is a signaling NaN, the invalid exception is raised. -*----------------------------------------------------------------------------*/ - -floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b, float_status *status) -{ - bool aIsLargerSignificand; - FloatClass a_cls, b_cls; - - /* This is not complete, but is good enough for pickNaN. */ - a_cls = (!floatx80_is_any_nan(a) - ? float_class_normal - : floatx80_is_signaling_nan(a, status) - ? float_class_snan - : float_class_qnan); - b_cls = (!floatx80_is_any_nan(b) - ? float_class_normal - : floatx80_is_signaling_nan(b, status) - ? float_class_snan - : float_class_qnan); - - if (is_snan(a_cls) || is_snan(b_cls)) { - float_raise(float_flag_invalid, status); - } - - if (status->default_nan_mode) { - return floatx80_default_nan(status); - } - - if (a.low < b.low) { - aIsLargerSignificand = 0; - } else if (b.low < a.low) { - aIsLargerSignificand = 1; - } else { - aIsLargerSignificand = (a.high < b.high) ? 1 : 0; - } - - if (pickNaN(a_cls, b_cls, aIsLargerSignificand, status)) { - if (is_snan(b_cls)) { - return floatx80_silence_nan(b, status); - } - return b; - } else { - if (is_snan(a_cls)) { - return floatx80_silence_nan(a, status); - } - return a; - } -} - /*---------------------------------------------------------------------------- | Returns 1 if the quadruple-precision floating-point value `a' is a quiet | NaN; otherwise returns 0. -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Unpacking and repacking the parts may be slightly more work than we did before, but we get to reuse more code. For a code path handling exceptional values, this is an improvement. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241203203949.483774-8-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat.c | 43 +++++-------------------------------------- 1 file changed, 5 insertions(+), 38 deletions(-) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -XXX,XX +XXX,XX @@ void normalizeFloatx80Subnormal(uint64_t aSig, int32_t *zExpPtr, floatx80 propagateFloatx80NaN(floatx80 a, floatx80 b, float_status *status) { - bool aIsLargerSignificand; - FloatClass a_cls, b_cls; + FloatParts128 pa, pb, *pr; - /* This is not complete, but is good enough for pickNaN. */ - a_cls = (!floatx80_is_any_nan(a) - ? float_class_normal - : floatx80_is_signaling_nan(a, status) - ? float_class_snan - : float_class_qnan); - b_cls = (!floatx80_is_any_nan(b) - ? float_class_normal - : floatx80_is_signaling_nan(b, status) - ? float_class_snan - : float_class_qnan); - - if (is_snan(a_cls) || is_snan(b_cls)) { - float_raise(float_flag_invalid, status); - } - - if (status->default_nan_mode) { + if (!floatx80_unpack_canonical(&pa, a, status) || + !floatx80_unpack_canonical(&pb, b, status)) { return floatx80_default_nan(status); } - if (a.low < b.low) { - aIsLargerSignificand = 0; - } else if (b.low < a.low) { - aIsLargerSignificand = 1; - } else { - aIsLargerSignificand = (a.high < b.high) ? 1 : 0; - } - - if (pickNaN(a_cls, b_cls, aIsLargerSignificand, status)) { - if (is_snan(b_cls)) { - return floatx80_silence_nan(b, status); - } - return b; - } else { - if (is_snan(a_cls)) { - return floatx80_silence_nan(a, status); - } - return a; - } + pr = parts_pick_nan(&pa, &pb, status); + return floatx80_round_pack_canonical(pr, status); } /*---------------------------------------------------------------------------- -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Inline pickNaN into its only caller. This makes one assert redundant with the immediately preceding IF. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-9-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 82 +++++++++++++++++++++++++---- fpu/softfloat-specialize.c.inc | 96 ---------------------------------- 2 files changed, 73 insertions(+), 105 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static void partsN(return_nan)(FloatPartsN *a, float_status *s) static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, float_status *s) { + int cmp, which; + if (is_snan(a->cls) || is_snan(b->cls)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); } if (s->default_nan_mode) { parts_default_nan(a, s); - } else { - int cmp = frac_cmp(a, b); - if (cmp == 0) { - cmp = a->sign < b->sign; - } + return a; + } - if (pickNaN(a->cls, b->cls, cmp > 0, s)) { - a = b; - } + cmp = frac_cmp(a, b); + if (cmp == 0) { + cmp = a->sign < b->sign; + } + + switch (s->float_2nan_prop_rule) { + case float_2nan_prop_s_ab: if (is_snan(a->cls)) { - parts_silence_nan(a, s); + which = 0; + } else if (is_snan(b->cls)) { + which = 1; + } else if (is_qnan(a->cls)) { + which = 0; + } else { + which = 1; } + break; + case float_2nan_prop_s_ba: + if (is_snan(b->cls)) { + which = 1; + } else if (is_snan(a->cls)) { + which = 0; + } else if (is_qnan(b->cls)) { + which = 1; + } else { + which = 0; + } + break; + case float_2nan_prop_ab: + which = is_nan(a->cls) ? 0 : 1; + break; + case float_2nan_prop_ba: + which = is_nan(b->cls) ? 1 : 0; + break; + case float_2nan_prop_x87: + /* + * This implements x87 NaN propagation rules: + * SNaN + QNaN => return the QNaN + * two SNaNs => return the one with the larger significand, silenced + * two QNaNs => return the one with the larger significand + * SNaN and a non-NaN => return the SNaN, silenced + * QNaN and a non-NaN => return the QNaN + * + * If we get down to comparing significands and they are the same, + * return the NaN with the positive sign bit (if any). + */ + if (is_snan(a->cls)) { + if (is_snan(b->cls)) { + which = cmp > 0 ? 0 : 1; + } else { + which = is_qnan(b->cls) ? 1 : 0; + } + } else if (is_qnan(a->cls)) { + if (is_snan(b->cls) || !is_qnan(b->cls)) { + which = 0; + } else { + which = cmp > 0 ? 0 : 1; + } + } else { + which = 1; + } + break; + default: + g_assert_not_reached(); + } + + if (which) { + a = b; + } + if (is_snan(a->cls)) { + parts_silence_nan(a, s); } return a; } diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -XXX,XX +XXX,XX @@ bool float32_is_signaling_nan(float32 a_, float_status *status) } } -/*---------------------------------------------------------------------------- -| Select which NaN to propagate for a two-input operation. -| IEEE754 doesn't specify all the details of this, so the -| algorithm is target-specific. -| The routine is passed various bits of information about the -| two NaNs and should return 0 to select NaN a and 1 for NaN b. -| Note that signalling NaNs are always squashed to quiet NaNs -| by the caller, by calling floatXX_silence_nan() before -| returning them. -| -| aIsLargerSignificand is only valid if both a and b are NaNs -| of some kind, and is true if a has the larger significand, -| or if both a and b have the same significand but a is -| positive but b is negative. It is only needed for the x87 -| tie-break rule. -*----------------------------------------------------------------------------*/ - -static int pickNaN(FloatClass a_cls, FloatClass b_cls, - bool aIsLargerSignificand, float_status *status) -{ - /* - * We guarantee not to require the target to tell us how to - * pick a NaN if we're always returning the default NaN. - * But if we're not in default-NaN mode then the target must - * specify via set_float_2nan_prop_rule(). - */ - assert(!status->default_nan_mode); - - switch (status->float_2nan_prop_rule) { - case float_2nan_prop_s_ab: - if (is_snan(a_cls)) { - return 0; - } else if (is_snan(b_cls)) { - return 1; - } else if (is_qnan(a_cls)) { - return 0; - } else { - return 1; - } - break; - case float_2nan_prop_s_ba: - if (is_snan(b_cls)) { - return 1; - } else if (is_snan(a_cls)) { - return 0; - } else if (is_qnan(b_cls)) { - return 1; - } else { - return 0; - } - break; - case float_2nan_prop_ab: - if (is_nan(a_cls)) { - return 0; - } else { - return 1; - } - break; - case float_2nan_prop_ba: - if (is_nan(b_cls)) { - return 1; - } else { - return 0; - } - break; - case float_2nan_prop_x87: - /* - * This implements x87 NaN propagation rules: - * SNaN + QNaN => return the QNaN - * two SNaNs => return the one with the larger significand, silenced - * two QNaNs => return the one with the larger significand - * SNaN and a non-NaN => return the SNaN, silenced - * QNaN and a non-NaN => return the QNaN - * - * If we get down to comparing significands and they are the same, - * return the NaN with the positive sign bit (if any). - */ - if (is_snan(a_cls)) { - if (is_snan(b_cls)) { - return aIsLargerSignificand ? 0 : 1; - } - return is_qnan(b_cls) ? 1 : 0; - } else if (is_qnan(a_cls)) { - if (is_snan(b_cls) || !is_qnan(b_cls)) { - return 0; - } else { - return aIsLargerSignificand ? 0 : 1; - } - } else { - return 1; - } - default: - g_assert_not_reached(); - } -} - /*---------------------------------------------------------------------------- | Returns 1 if the double-precision floating-point value `a' is a quiet | NaN; otherwise returns 0. -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Remember if there was an SNaN, and use that to simplify float_2nan_prop_s_{ab,ba} to only the snan component. Then, fall through to the corresponding float_2nan_prop_{ab,ba} case to handle any remaining nans, which must be quiet. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241203203949.483774-10-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 32 ++++++++++++-------------------- 1 file changed, 12 insertions(+), 20 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static void partsN(return_nan)(FloatPartsN *a, float_status *s) static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, float_status *s) { + bool have_snan = false; int cmp, which; if (is_snan(a->cls) || is_snan(b->cls)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); + have_snan = true; } if (s->default_nan_mode) { @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, switch (s->float_2nan_prop_rule) { case float_2nan_prop_s_ab: - if (is_snan(a->cls)) { - which = 0; - } else if (is_snan(b->cls)) { - which = 1; - } else if (is_qnan(a->cls)) { - which = 0; - } else { - which = 1; + if (have_snan) { + which = is_snan(a->cls) ? 0 : 1; + break; } - break; - case float_2nan_prop_s_ba: - if (is_snan(b->cls)) { - which = 1; - } else if (is_snan(a->cls)) { - which = 0; - } else if (is_qnan(b->cls)) { - which = 1; - } else { - which = 0; - } - break; + /* fall through */ case float_2nan_prop_ab: which = is_nan(a->cls) ? 0 : 1; break; + case float_2nan_prop_s_ba: + if (have_snan) { + which = is_snan(b->cls) ? 1 : 0; + break; + } + /* fall through */ case float_2nan_prop_ba: which = is_nan(b->cls) ? 1 : 0; break; -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Move the fractional comparison to the end of the float_2nan_prop_x87 case. This is not required for any other 2nan propagation rule. Reorganize the x87 case itself to break out of the switch when the fractional comparison is not required. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20241203203949.483774-11-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, return a; } - cmp = frac_cmp(a, b); - if (cmp == 0) { - cmp = a->sign < b->sign; - } - switch (s->float_2nan_prop_rule) { case float_2nan_prop_s_ab: if (have_snan) { @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, * return the NaN with the positive sign bit (if any). */ if (is_snan(a->cls)) { - if (is_snan(b->cls)) { - which = cmp > 0 ? 0 : 1; - } else { + if (!is_snan(b->cls)) { which = is_qnan(b->cls) ? 1 : 0; + break; } } else if (is_qnan(a->cls)) { if (is_snan(b->cls) || !is_qnan(b->cls)) { which = 0; - } else { - which = cmp > 0 ? 0 : 1; + break; } } else { which = 1; + break; } + cmp = frac_cmp(a, b); + if (cmp == 0) { + cmp = a->sign < b->sign; + } + which = cmp > 0 ? 0 : 1; break; default: g_assert_not_reached(); -- 2.34.1 From: Richard Henderson <richard.henderson@linaro.org> Replace the "index" selecting between A and B with a result variable of the proper type. This improves clarity within the function. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241203203949.483774-12-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- fpu/softfloat-parts.c.inc | 28 +++++++++++++--------------- 1 file changed, 13 insertions(+), 15 deletions(-) diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index XXXXXXX..XXXXXXX 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, float_status *s) { bool have_snan = false; - int cmp, which; + FloatPartsN *ret; + int cmp; if (is_snan(a->cls) || is_snan(b->cls)) { float_raise(float_flag_invalid | float_flag_invalid_snan, s); @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, switch (s->float_2nan_prop_rule) { case float_2nan_prop_s_ab: if (have_snan) { - which = is_snan(a->cls) ? 0 : 1; + ret = is_snan(a->cls) ? a : b; break; } /* fall through */ case float_2nan_prop_ab: - which = is_nan(a->cls) ? 0 : 1; + ret = is_nan(a->cls) ? a : b; break; case float_2nan_prop_s_ba: if (have_snan) { - which = is_snan(b->cls) ? 1 : 0; + ret = is_snan(b->cls) ? b : a; break; } /* fall through */ case float_2nan_prop_ba: - which = is_nan(b->cls) ? 1 : 0; + ret = is_nan(b->cls) ? b : a; break; case float_2nan_prop_x87: /* @@ -XXX,XX +XXX,XX @@ static FloatPartsN *partsN(pick_nan)(FloatPartsN *a, FloatPartsN *b, */ if (is_snan(a->cls)) { if (!is_snan(b->cls)) { - which = is_qnan(b->cls) ? 1 : 0; + ret = is_qnan(b->cls) ? b : a; break; } } else if (is_qnan(a->cls)) { if (is_snan(b->cls) || !is_qnan(b->cls)) { - which = 0; + ret = a; break; } } else { - which = 1; + ret = b; break; } cmp = frac_cmp(a, b); if (cmp == 0) { cmp = a->sign < b->sign; } - which = cmp > 0 ? 0 : 1; + ret = cmp > 0 ? a : b; break; default: g_assert_not_reached(); } - if (which) { - a = b; + if (is_snan(ret->cls)) { + parts_silence_nan(ret, s); } - if (is_snan(a->cls)) { - parts_silence_nan(a, s); - } - return a; + return ret; } static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, -- 2.34.1 From: Leif Lindholm <quic_llindhol@quicinc.com> I'm migrating to Qualcomm's new open source email infrastructure, so update my email address, and update the mailmap to match. Signed-off-by: Leif Lindholm <leif.lindholm@oss.qualcomm.com> Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Reviewed-by: Brian Cain <brian.cain@oss.qualcomm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20241205114047.1125842-1-leif.lindholm@oss.qualcomm.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- MAINTAINERS | 2 +- .mailmap | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index XXXXXXX..XXXXXXX 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -XXX,XX +XXX,XX @@ F: include/hw/ssi/imx_spi.h SBSA-REF M: Radoslaw Biernacki <rad@semihalf.com> M: Peter Maydell <peter.maydell@linaro.org> -R: Leif Lindholm <quic_llindhol@quicinc.com> +R: Leif Lindholm <leif.lindholm@oss.qualcomm.com> R: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> L: qemu-arm@nongnu.org S: Maintained diff --git a/.mailmap b/.mailmap index XXXXXXX..XXXXXXX 100644 --- a/.mailmap +++ b/.mailmap @@ -XXX,XX +XXX,XX @@ Huacai Chen <chenhuacai@kernel.org> <chenhc@lemote.com> Huacai Chen <chenhuacai@kernel.org> <chenhuacai@loongson.cn> James Hogan <jhogan@kernel.org> <james.hogan@imgtec.com> Juan Quintela <quintela@trasno.org> <quintela@redhat.com> -Leif Lindholm <quic_llindhol@quicinc.com> <leif.lindholm@linaro.org> -Leif Lindholm <quic_llindhol@quicinc.com> <leif@nuviainc.com> +Leif Lindholm <leif.lindholm@oss.qualcomm.com> <quic_llindhol@quicinc.com> +Leif Lindholm <leif.lindholm@oss.qualcomm.com> <leif.lindholm@linaro.org> +Leif Lindholm <leif.lindholm@oss.qualcomm.com> <leif@nuviainc.com> Luc Michel <luc@lmichel.fr> <luc.michel@git.antfield.fr> Luc Michel <luc@lmichel.fr> <luc.michel@greensocs.com> Luc Michel <luc@lmichel.fr> <lmichel@kalray.eu> -- 2.34.1 From: Vikram Garhwal <vikram.garhwal@bytedance.com> Previously, maintainer role was paused due to inactive email id. Commit id: c009d715721861984c4987bcc78b7ee183e86d75. Signed-off-by: Vikram Garhwal <vikram.garhwal@bytedance.com> Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com> Message-id: 20241204184205.12952-1-vikram.garhwal@bytedance.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index XXXXXXX..XXXXXXX 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -XXX,XX +XXX,XX @@ F: tests/qtest/fuzz-sb16-test.c Xilinx CAN M: Francisco Iglesias <francisco.iglesias@amd.com> +M: Vikram Garhwal <vikram.garhwal@bytedance.com> S: Maintained F: hw/net/can/xlnx-* F: include/hw/net/xlnx-* @@ -XXX,XX +XXX,XX @@ F: include/hw/rx/ CAN bus subsystem and hardware M: Pavel Pisa <pisa@cmp.felk.cvut.cz> M: Francisco Iglesias <francisco.iglesias@amd.com> +M: Vikram Garhwal <vikram.garhwal@bytedance.com> S: Maintained W: https://canbus.pages.fel.cvut.cz/ F: net/can/* -- 2.34.1