From: Frank Chang <frank.chang@sifive.com>
This patchset implements the vector extension v0.9 for RISC-V on QEMU.
This patchset is sent as RFC because RVV v0.9 is still in draft state.
However, as RVV v1.0 should be ratified soon and there shouldn't be
critical changes between RVV v1.0 and RVV v0.9. We would like to have
the community to review RVV v0.9 implementations. Once RVV v1.0 is
ratified, we will then upgrade to RVV v1.0.
You can change the cpu argument: vext_spec to v0.9 (i.e. vext_spec=v0.9)
to run with RVV v0.9 instructions.
Changelog:
v2
* drop v0.7.1 support.
* replace invisible return check macros with functions.
* move mark_vs_dirty() to translators.
* add SSTATUS_VS flag for s-mode.
* nan-box scalar fp register for floating-point operations.
* add gdbstub files for vector registers to allow system-mode
debugging with GDB.
Chih-Min Chao (2):
fpu: add api to handle alternative sNaN propagation
fpu: fix float16 nan check
Frank Chang (65):
target/riscv: drop vector 0.7.1 support
target/riscv: rvv-0.9: support vector 0.9
target/riscv: fix rsub gvec tcg_assert_listed_vecop assertion
target/riscv: correct the gvec IR called in gen_vec_rsub16_i64()
target/riscv: fix return value of do_opivx_widen()
target/riscv: fix vill bit index in vtype register
target/riscv: Use FIELD_EX32() to extract wd field
target/riscv: rvv-0.9: remove vxrm and vxsat fields from fcsr register
target/riscv: rvv-0.9: remove MLEN calculations
target/riscv: rvv-0.9: add fractional LMUL
target/riscv: rvv-0.9: add VMA and VTA
target/riscv: rvv-0.9: update check functions
target/riscv: introduce more imm value modes in translator functions
target/riscv: rvv-0.9: add narrower_nanbox_fpr helper
target/riscv: rvv-0.9: apply narrower nanbox helper in opfvf_trans
target/riscv: rvv-0.9: configure instructions
target/riscv: rvv-0.9: stride load and store instructions
target/riscv: rvv-0.9: index load and store instructions
target/riscv: rvv-0.9: fix address index overflow bug of indexed
load/store insns
target/riscv: rvv-0.9: fault-only-first unit stride load
target/riscv: rvv-0.9: amo operations
target/riscv: rvv-0.9: load/store whole register instructions
target/riscv: rvv-0.9: update vext_max_elems() for load/store insns
target/riscv: rvv-0.9: take fractional LMUL into vector max elements
calculation
target/riscv: rvv-0.9: floating-point square-root instruction
target/riscv: rvv-0.9: floating-point classify instructions
target/riscv: rvv-0.9: mask population count instruction
target/riscv: rvv-0.9: find-first-set mask bit instruction
target/riscv: rvv-0.9: set-X-first mask bit instructions
target/riscv: rvv-0.9: iota instruction
target/riscv: rvv-0.9: element index instruction
target/riscv: rvv-0.9: allow load element with sign-extended
target/riscv: rvv-0.9: register gather instructions
target/riscv: rvv-0.9: integer scalar move instructions
target/riscv: rvv-0.9: floating-point move instruction
target/riscv: rvv-0.9: floating-point scalar move instructions
target/riscv: rvv-0.9: whole register move instructions
target/riscv: rvv-0.9: integer extension instructions
target/riscv: rvv-0.9: single-width averaging add and subtract
instructions
target/riscv: rvv-0.9: single-width bit shift instructions
target/riscv: rvv-0.9: integer add-with-carry/subtract-with-borrow
target/riscv: rvv-0.9: narrowing integer right shift instructions
target/riscv: rvv-0.9: widening integer multiply-add instructions
target/riscv: rvv-0.9: quad-widening integer multiply-add instructions
target/riscv: rvv-0.9: single-width saturating add and subtract
instructions
target/riscv: rvv-0.9: integer comparison instructions
target/riscv: use softfloat lib float16 comparison functions
target/riscv: rvv-0.9: floating-point compare instructions
target/riscv: rvv-0.9: single-width integer reduction instructions
target/riscv: rvv-0.9: widening integer reduction instructions
target/riscv: rvv-0.9: mask-register logical instructions
target/riscv: rvv-0.9: slide instructions
target/riscv: rvv-0.9: floating-point slide instructions
target/riscv: rvv-0.9: narrowing fixed-point clip instructions
target/riscv: rvv-0.9: floating-point/integer type-convert
instructions
target/riscv: rvv-0.9: single-width floating-point reduction
target/riscv: rvv-0.9: widening floating-point reduction instructions
target/riscv: rvv-0.9: single-width scaling shift instructions
target/riscv: rvv-0.9: remove widening saturating scaled multiply-add
target/riscv: rvv-0.9: remove vmford.vv and vmford.vf
target/riscv: rvv-0.9: remove integer extract instruction
target/riscv: rvv-0.9: floating-point min/max instructions
softfloat: add fp16 and uint8/int8 interconvert functions
target/riscv: rvv-0.9: widening floating-point/integer type-convert
target/riscv: rvv-0.9: narrowing floating-point/integer type-convert
Greentime Hu (2):
target/riscv: rvv-0.9: add vlenb register
target/riscv: gdb: support vector registers for rv32
Hsiangkai Wang (2):
target/riscv: gdb: modify gdb csr xml file to align with csr register
map
target/riscv: gdb: support vector registers for rv64
Kito Cheng (1):
fpu: implement full set compare for fp16
LIU Zhiwei (4):
target/riscv: rvv-0.9: add mstatus VS field
target/riscv: rvv-0.9: add sstatus VS field
target/riscv: rvv-0.9: add translation-time vector context status
target/riscv: rvv-0.9: add vcsr register
configure | 4 +-
fpu/softfloat-specialize.inc.c | 4 +-
fpu/softfloat.c | 137 +-
gdb-xml/riscv-32bit-csr.xml | 11 +-
gdb-xml/riscv-64bit-csr.xml | 18 +-
gdb-xml/riscv-64bit-vector-128b.xml | 59 +
gdb-xml/riscv-64bit-vector-256b.xml | 59 +
gdb-xml/riscv-64bit-vector-512b.xml | 59 +
include/fpu/softfloat.h | 55 +
target/riscv/cpu.c | 10 +-
target/riscv/cpu.h | 67 +-
target/riscv/cpu_bits.h | 10 +
target/riscv/cpu_helper.c | 16 +-
target/riscv/csr.c | 63 +-
target/riscv/gdbstub.c | 62 +-
target/riscv/helper.h | 507 +++--
target/riscv/insn32-64.decode | 18 +-
target/riscv/insn32.decode | 282 +--
target/riscv/insn_trans/trans_rvv.inc.c | 2291 +++++++++++++++-------
target/riscv/internals.h | 18 +-
target/riscv/translate.c | 43 +-
target/riscv/vector_helper.c | 2367 +++++++++++++----------
22 files changed, 3993 insertions(+), 2167 deletions(-)
create mode 100644 gdb-xml/riscv-64bit-vector-128b.xml
create mode 100644 gdb-xml/riscv-64bit-vector-256b.xml
create mode 100644 gdb-xml/riscv-64bit-vector-512b.xml
--
2.17.1