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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis Reviewed-by: Bin Meng --- target/riscv/cpu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index a33dc30be8..1cfc6a53a0 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -65,6 +65,7 @@ #define RVS RV('S') #define RVU RV('U') #define RVH RV('H') +#define RVJ RV('J') =20 /* S extension denotes that Supervisor mode exists, however it is possible to have a core that support S mode but does not have an MMU and there @@ -291,6 +292,7 @@ struct RISCVCPU { bool ext_s; bool ext_u; bool ext_h; + bool ext_j; bool ext_v; bool ext_zba; bool ext_zbb; --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1635184093222253.18826262445805; 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Mon, 25 Oct 2021 10:36:19 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v17 2/8] target/riscv: Add CSR defines for RISC-V PM extension Date: Mon, 25 Oct 2021 20:36:03 +0300 Message-Id: <20211025173609.2724490-3-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> References: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::52d; envelope-from=baturo.alexey@gmail.com; helo=mail-ed1-x52d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UPPERCASE_50_75=0.008 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baturo.alexey@gmail.com, qemu-riscv@nongnu.org, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, richard.henderson@linaro.org, qemu-devel@nongnu.org, space.monkey.delivers@gmail.com, Alistair Francis , kupokupokupopo@gmail.com, palmer@dabbelt.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1635184094807100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/cpu_bits.h | 96 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index cffcd3a5df..aa0bce4e06 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -334,6 +334,38 @@ #define CSR_MHPMCOUNTER30H 0xb9e #define CSR_MHPMCOUNTER31H 0xb9f =20 +/* + * User PointerMasking registers + * NB: actual CSR numbers might be changed in future + */ +#define CSR_UMTE 0x4c0 +#define CSR_UPMMASK 0x4c1 +#define CSR_UPMBASE 0x4c2 + +/* + * Machine PointerMasking registers + * NB: actual CSR numbers might be changed in future + */ +#define CSR_MMTE 0x3c0 +#define CSR_MPMMASK 0x3c1 +#define CSR_MPMBASE 0x3c2 + +/* + * Supervisor PointerMaster registers + * NB: actual CSR numbers might be changed in future + */ +#define CSR_SMTE 0x1c0 +#define CSR_SPMMASK 0x1c1 +#define CSR_SPMBASE 0x1c2 + +/* + * Hypervisor PointerMaster registers + * NB: actual CSR numbers might be changed in future + */ +#define CSR_VSMTE 0x2c0 +#define CSR_VSPMMASK 0x2c1 +#define CSR_VSPMBASE 0x2c2 + /* mstatus CSR bits */ #define MSTATUS_UIE 0x00000001 #define MSTATUS_SIE 0x00000002 @@ -525,4 +557,68 @@ typedef enum RISCVException { #define MIE_UTIE (1 << IRQ_U_TIMER) #define MIE_SSIE (1 << IRQ_S_SOFT) #define MIE_USIE (1 << IRQ_U_SOFT) + +/* General PointerMasking CSR bits*/ +#define PM_ENABLE 0x00000001ULL +#define PM_CURRENT 0x00000002ULL +#define PM_INSN 0x00000004ULL +#define PM_XS_MASK 0x00000003ULL + +/* PointerMasking XS bits values */ +#define PM_EXT_DISABLE 0x00000000ULL +#define PM_EXT_INITIAL 0x00000001ULL +#define PM_EXT_CLEAN 0x00000002ULL +#define PM_EXT_DIRTY 0x00000003ULL + +/* Offsets for every pair of control bits per each priv level */ +#define XS_OFFSET 0ULL +#define U_OFFSET 2ULL +#define S_OFFSET 5ULL +#define M_OFFSET 8ULL + +#define PM_XS_BITS (PM_XS_MASK << XS_OFFSET) +#define U_PM_ENABLE (PM_ENABLE << U_OFFSET) +#define U_PM_CURRENT (PM_CURRENT << U_OFFSET) +#define U_PM_INSN (PM_INSN << U_OFFSET) +#define S_PM_ENABLE (PM_ENABLE << S_OFFSET) +#define S_PM_CURRENT (PM_CURRENT << S_OFFSET) +#define S_PM_INSN (PM_INSN << S_OFFSET) +#define M_PM_ENABLE (PM_ENABLE << M_OFFSET) +#define M_PM_CURRENT (PM_CURRENT << M_OFFSET) +#define M_PM_INSN (PM_INSN << M_OFFSET) + +/* mmte CSR bits */ +#define MMTE_PM_XS_BITS PM_XS_BITS +#define MMTE_U_PM_ENABLE U_PM_ENABLE +#define MMTE_U_PM_CURRENT U_PM_CURRENT +#define MMTE_U_PM_INSN U_PM_INSN +#define MMTE_S_PM_ENABLE S_PM_ENABLE +#define MMTE_S_PM_CURRENT S_PM_CURRENT +#define MMTE_S_PM_INSN S_PM_INSN +#define MMTE_M_PM_ENABLE M_PM_ENABLE +#define MMTE_M_PM_CURRENT M_PM_CURRENT +#define MMTE_M_PM_INSN M_PM_INSN +#define MMTE_MASK (MMTE_U_PM_ENABLE | MMTE_U_PM_CURRENT | MMTE_U_PM_INS= N | \ + MMTE_S_PM_ENABLE | MMTE_S_PM_CURRENT | MMTE_S_PM_INS= N | \ + MMTE_M_PM_ENABLE | MMTE_M_PM_CURRENT | MMTE_M_PM_INS= N | \ + MMTE_PM_XS_BITS) + +/* (v)smte CSR bits */ +#define SMTE_PM_XS_BITS PM_XS_BITS +#define SMTE_U_PM_ENABLE U_PM_ENABLE +#define SMTE_U_PM_CURRENT U_PM_CURRENT +#define SMTE_U_PM_INSN U_PM_INSN +#define SMTE_S_PM_ENABLE S_PM_ENABLE +#define SMTE_S_PM_CURRENT S_PM_CURRENT +#define SMTE_S_PM_INSN S_PM_INSN +#define SMTE_MASK (SMTE_U_PM_ENABLE | SMTE_U_PM_CURRENT | SMTE_U_PM_INS= N | \ + SMTE_S_PM_ENABLE | SMTE_S_PM_CURRENT | SMTE_S_PM_INS= N | \ + SMTE_PM_XS_BITS) + +/* umte CSR bits */ +#define UMTE_U_PM_ENABLE U_PM_ENABLE +#define UMTE_U_PM_CURRENT U_PM_CURRENT +#define UMTE_U_PM_INSN U_PM_INSN +#define UMTE_MASK (UMTE_U_PM_ENABLE | MMTE_U_PM_CURRENT | UMTE_U_PM_IN= SN) + #endif --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 2 + target/riscv/cpu.h | 11 ++ target/riscv/csr.c | 285 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 298 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 788fa0b11c..6b767a4a0b 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -367,6 +367,8 @@ static void riscv_cpu_reset(DeviceState *dev) env->mcause =3D 0; env->pc =3D env->resetvec; env->two_stage_lookup =3D false; + /* mmte is supposed to have pm.current hardwired to 1 */ + env->mmte |=3D (PM_EXT_INITIAL | MMTE_M_PM_CURRENT); #endif cs->exception_index =3D RISCV_EXCP_NONE; env->load_res =3D -1; diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 1cfc6a53a0..b2422e3f99 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -238,6 +238,17 @@ struct CPURISCVState { =20 /* True if in debugger mode. */ bool debugger; + + /* + * CSRs for PointerMasking extension + */ + target_ulong mmte; + target_ulong mpmmask; + target_ulong mpmbase; + target_ulong spmmask; + target_ulong spmbase; + target_ulong upmmask; + target_ulong upmbase; #endif =20 float_status fp_status; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 69e4d65fcd..9f41954894 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -192,6 +192,16 @@ static RISCVException hmode32(CPURISCVState *env, int = csrno) =20 } =20 +/* Checks if PointerMasking registers could be accessed */ +static RISCVException pointer_masking(CPURISCVState *env, int csrno) +{ + /* Check if j-ext is present */ + if (riscv_has_ext(env, RVJ)) { + return RISCV_EXCP_NONE; + } + return RISCV_EXCP_ILLEGAL_INST; +} + static RISCVException pmp(CPURISCVState *env, int csrno) { if (riscv_feature(env, RISCV_FEATURE_PMP)) { @@ -1425,6 +1435,268 @@ static RISCVException write_pmpaddr(CPURISCVState *= env, int csrno, return RISCV_EXCP_NONE; } =20 +/* + * Functions to access Pointer Masking feature registers + * We have to check if current priv lvl could modify + * csr in given mode + */ +static bool check_pm_current_disabled(CPURISCVState *env, int csrno) +{ + int csr_priv =3D get_field(csrno, 0x300); + int pm_current; + + /* + * If priv lvls differ that means we're accessing csr from higher priv= lvl, + * so allow the access + */ + if (env->priv !=3D csr_priv) { + return false; + } + switch (env->priv) { + case PRV_M: + pm_current =3D get_field(env->mmte, M_PM_CURRENT); + break; + case PRV_S: + pm_current =3D get_field(env->mmte, S_PM_CURRENT); + break; + case PRV_U: + pm_current =3D get_field(env->mmte, U_PM_CURRENT); + break; + default: + g_assert_not_reached(); + } + /* It's same priv lvl, so we allow to modify csr only if pm.current=3D= =3D1 */ + return !pm_current; +} + +static RISCVException read_mmte(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->mmte & MMTE_MASK; + return RISCV_EXCP_NONE; +} + +static RISCVException write_mmte(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + target_ulong wpri_val =3D val & MMTE_MASK; + + if (val !=3D wpri_val) { + qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT= _lx "\n", + "MMTE: WPRI violation written 0x", val, + "vs expected 0x", wpri_val); + } + /* for machine mode pm.current is hardwired to 1 */ + wpri_val |=3D MMTE_M_PM_CURRENT; + + /* hardwiring pm.instruction bit to 0, since it's not supported yet */ + wpri_val &=3D ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN); + env->mmte =3D wpri_val | PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_smte(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->mmte & SMTE_MASK; + return RISCV_EXCP_NONE; +} + +static RISCVException write_smte(CPURISCVState *env, int csrno, + target_ulong val) +{ + target_ulong wpri_val =3D val & SMTE_MASK; + + if (val !=3D wpri_val) { + qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT= _lx "\n", + "SMTE: WPRI violation written 0x", val, + "vs expected 0x", wpri_val); + } + + /* if pm.current=3D=3D0 we can't modify current PM CSRs */ + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + + wpri_val |=3D (env->mmte & ~SMTE_MASK); + write_mmte(env, csrno, wpri_val); + return RISCV_EXCP_NONE; +} + +static RISCVException read_umte(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->mmte & UMTE_MASK; + return RISCV_EXCP_NONE; +} + +static RISCVException write_umte(CPURISCVState *env, int csrno, + target_ulong val) +{ + target_ulong wpri_val =3D val & UMTE_MASK; + + if (val !=3D wpri_val) { + qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT= _lx "\n", + "UMTE: WPRI violation written 0x", val, + "vs expected 0x", wpri_val); + } + + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + + wpri_val |=3D (env->mmte & ~UMTE_MASK); + write_mmte(env, csrno, wpri_val); + return RISCV_EXCP_NONE; +} + +static RISCVException read_mpmmask(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->mpmmask; + return RISCV_EXCP_NONE; +} + +static RISCVException write_mpmmask(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + env->mpmmask =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_spmmask(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->spmmask; + return RISCV_EXCP_NONE; +} + +static RISCVException write_spmmask(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + /* if pm.current=3D=3D0 we can't modify current PM CSRs */ + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + env->spmmask =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_upmmask(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->upmmask; + return RISCV_EXCP_NONE; +} + +static RISCVException write_upmmask(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + /* if pm.current=3D=3D0 we can't modify current PM CSRs */ + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + env->upmmask =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_mpmbase(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->mpmbase; + return RISCV_EXCP_NONE; +} + +static RISCVException write_mpmbase(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + env->mpmbase =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_spmbase(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->spmbase; + return RISCV_EXCP_NONE; +} + +static RISCVException write_spmbase(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + /* if pm.current=3D=3D0 we can't modify current PM CSRs */ + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + env->spmbase =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + +static RISCVException read_upmbase(CPURISCVState *env, int csrno, + target_ulong *val) +{ + *val =3D env->upmbase; + return RISCV_EXCP_NONE; +} + +static RISCVException write_upmbase(CPURISCVState *env, int csrno, + target_ulong val) +{ + uint64_t mstatus; + + /* if pm.current=3D=3D0 we can't modify current PM CSRs */ + if (check_pm_current_disabled(env, csrno)) { + return RISCV_EXCP_NONE; + } + env->upmbase =3D val; + env->mmte |=3D PM_EXT_DIRTY; + + /* Set XS and SD bits, since PM CSRs are dirty */ + mstatus =3D env->mstatus | MSTATUS_XS; + write_mstatus(env, csrno, mstatus); + return RISCV_EXCP_NONE; +} + #endif =20 /* @@ -1659,6 +1931,19 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] =3D { [CSR_PMPADDR14] =3D { "pmpaddr14", pmp, read_pmpaddr, write_pmpaddr }, [CSR_PMPADDR15] =3D { "pmpaddr15", pmp, read_pmpaddr, write_pmpaddr }, =20 + /* User Pointer Masking */ + [CSR_UMTE] =3D { "umte", pointer_masking, read_umte, write= _umte }, + [CSR_UPMMASK] =3D { "upmmask", pointer_masking, read_upmmask, write= _upmmask }, + [CSR_UPMBASE] =3D { "upmbase", pointer_masking, read_upmbase, write= _upmbase }, + /* Machine Pointer Masking */ + [CSR_MMTE] =3D { "mmte", pointer_masking, read_mmte, write= _mmte }, + [CSR_MPMMASK] =3D { "mpmmask", pointer_masking, read_mpmmask, write= _mpmmask }, + [CSR_MPMBASE] =3D { "mpmbase", pointer_masking, read_mpmbase, write= _mpmbase }, + /* Supervisor Pointer Masking */ + [CSR_SMTE] =3D { "smte", pointer_masking, read_smte, write= _smte }, + [CSR_SPMMASK] =3D { "spmmask", pointer_masking, read_spmmask, write= _spmmask }, + [CSR_SPMBASE] =3D { "spmbase", pointer_masking, read_spmbase, write= _spmbase }, + /* Performance Counters */ [CSR_HPMCOUNTER3] =3D { "hpmcounter3", ctr, read_zero }, [CSR_HPMCOUNTER4] =3D { "hpmcounter4", ctr, read_zero }, --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/machine.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/target/riscv/machine.c b/target/riscv/machine.c index f64b2a96c1..7b4c739564 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -84,6 +84,14 @@ static bool vector_needed(void *opaque) return riscv_has_ext(env, RVV); } =20 +static bool pointermasking_needed(void *opaque) +{ + RISCVCPU *cpu =3D opaque; + CPURISCVState *env =3D &cpu->env; + + return riscv_has_ext(env, RVJ); +} + static const VMStateDescription vmstate_vector =3D { .name =3D "cpu/vector", .version_id =3D 1, @@ -100,6 +108,24 @@ static const VMStateDescription vmstate_vector =3D { } }; =20 +static const VMStateDescription vmstate_pointermasking =3D { + .name =3D "cpu/pointer_masking", + .version_id =3D 1, + .minimum_version_id =3D 1, + .needed =3D pointermasking_needed, + .fields =3D (VMStateField[]) { + VMSTATE_UINTTL(env.mmte, RISCVCPU), + VMSTATE_UINTTL(env.mpmmask, RISCVCPU), + VMSTATE_UINTTL(env.mpmbase, RISCVCPU), + VMSTATE_UINTTL(env.spmmask, RISCVCPU), + VMSTATE_UINTTL(env.spmbase, RISCVCPU), + VMSTATE_UINTTL(env.upmmask, RISCVCPU), + VMSTATE_UINTTL(env.upmbase, RISCVCPU), + + VMSTATE_END_OF_LIST() + } +}; + static const VMStateDescription vmstate_hyper =3D { .name =3D "cpu/hyper", .version_id =3D 1, @@ -191,6 +217,7 @@ const VMStateDescription vmstate_riscv_cpu =3D { &vmstate_pmp, &vmstate_hyper, &vmstate_vector, + &vmstate_pointermasking, NULL } }; --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1635183686590806.6057578839464; Mon, 25 Oct 2021 10:41:26 -0700 (PDT) Received: from localhost ([::1]:45350 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mf3yP-0002g5-54 for importer@patchew.org; Mon, 25 Oct 2021 13:41:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47578) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mf3tc-0008Vt-J0; 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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 6b767a4a0b..16fac64806 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -271,6 +271,13 @@ static void riscv_cpu_dump_state(CPUState *cs, FILE *f= , int flags) CSR_MSCRATCH, CSR_SSCRATCH, CSR_SATP, + CSR_MMTE, + CSR_UPMBASE, + CSR_UPMMASK, + CSR_SPMBASE, + CSR_SPMMASK, + CSR_MPMBASE, + CSR_MPMMASK, }; =20 for (int i =3D 0; i < ARRAY_SIZE(dump_csrs); ++i) { --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 16351841593611001.416002876658; 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Mon, 25 Oct 2021 10:36:24 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v17 6/8] target/riscv: Support pointer masking for RISC-V for i/c/f/d/a types of instructions Date: Mon, 25 Oct 2021 20:36:07 +0300 Message-Id: <20211025173609.2724490-7-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> References: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::52d; envelope-from=baturo.alexey@gmail.com; helo=mail-ed1-x52d.google.com X-Spam_score_int: 0 X-Spam_score: -0.1 X-Spam_bar: / X-Spam_report: (-0.1 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, GAPPY_SUBJECT=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baturo.alexey@gmail.com, qemu-riscv@nongnu.org, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, richard.henderson@linaro.org, qemu-devel@nongnu.org, space.monkey.delivers@gmail.com, Alistair Francis , kupokupokupopo@gmail.com, palmer@dabbelt.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1635184159903100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/insn_trans/trans_rva.c.inc | 3 +++ target/riscv/insn_trans/trans_rvd.c.inc | 2 ++ target/riscv/insn_trans/trans_rvf.c.inc | 2 ++ target/riscv/insn_trans/trans_rvi.c.inc | 2 ++ target/riscv/translate.c | 8 ++++++++ 5 files changed, 17 insertions(+) diff --git a/target/riscv/insn_trans/trans_rva.c.inc b/target/riscv/insn_tr= ans/trans_rva.c.inc index 6ea07d89b0..40fe132b04 100644 --- a/target/riscv/insn_trans/trans_rva.c.inc +++ b/target/riscv/insn_trans/trans_rva.c.inc @@ -25,6 +25,7 @@ static bool gen_lr(DisasContext *ctx, arg_atomic *a, MemO= p mop) if (a->rl) { tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL); } + src1 =3D gen_pm_adjust_address(ctx, src1); tcg_gen_qemu_ld_tl(load_val, src1, ctx->mem_idx, mop); if (a->aq) { tcg_gen_mb(TCG_MO_ALL | TCG_BAR_LDAQ); @@ -44,6 +45,7 @@ static bool gen_sc(DisasContext *ctx, arg_atomic *a, MemO= p mop) TCGLabel *l2 =3D gen_new_label(); =20 src1 =3D get_gpr(ctx, a->rs1, EXT_ZERO); + src1 =3D gen_pm_adjust_address(ctx, src1); tcg_gen_brcond_tl(TCG_COND_NE, load_res, src1, l1); =20 /* @@ -84,6 +86,7 @@ static bool gen_amo(DisasContext *ctx, arg_atomic *a, TCGv src1 =3D get_gpr(ctx, a->rs1, EXT_NONE); TCGv src2 =3D get_gpr(ctx, a->rs2, EXT_NONE); =20 + src1 =3D gen_pm_adjust_address(ctx, src1); func(dest, src1, src2, ctx->mem_idx, mop); =20 gen_set_gpr(ctx, a->rd, dest); diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_tr= ans/trans_rvd.c.inc index db9ae15755..64fb0046f7 100644 --- a/target/riscv/insn_trans/trans_rvd.c.inc +++ b/target/riscv/insn_trans/trans_rvd.c.inc @@ -31,6 +31,7 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 tcg_gen_qemu_ld_i64(cpu_fpr[a->rd], addr, ctx->mem_idx, MO_TEQ); =20 @@ -51,6 +52,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], addr, ctx->mem_idx, MO_TEQ); =20 diff --git a/target/riscv/insn_trans/trans_rvf.c.inc b/target/riscv/insn_tr= ans/trans_rvf.c.inc index bddbd418d9..b5459249c4 100644 --- a/target/riscv/insn_trans/trans_rvf.c.inc +++ b/target/riscv/insn_trans/trans_rvf.c.inc @@ -37,6 +37,7 @@ static bool trans_flw(DisasContext *ctx, arg_flw *a) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 dest =3D cpu_fpr[a->rd]; tcg_gen_qemu_ld_i64(dest, addr, ctx->mem_idx, MO_TEUL); @@ -59,6 +60,7 @@ static bool trans_fsw(DisasContext *ctx, arg_fsw *a) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], addr, ctx->mem_idx, MO_TEUL); =20 diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_tr= ans/trans_rvi.c.inc index 91dc438a3a..e51dbc41c5 100644 --- a/target/riscv/insn_trans/trans_rvi.c.inc +++ b/target/riscv/insn_trans/trans_rvi.c.inc @@ -144,6 +144,7 @@ static bool gen_load(DisasContext *ctx, arg_lb *a, MemO= p memop) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, memop); gen_set_gpr(ctx, a->rd, dest); @@ -185,6 +186,7 @@ static bool gen_store(DisasContext *ctx, arg_sb *a, Mem= Op memop) tcg_gen_addi_tl(temp, addr, a->imm); addr =3D temp; } + addr =3D gen_pm_adjust_address(ctx, addr); =20 tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, memop); return true; diff --git a/target/riscv/translate.c b/target/riscv/translate.c index d38f87d718..a5e6fa145d 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -271,6 +271,14 @@ static void gen_jal(DisasContext *ctx, int rd, target_= ulong imm) ctx->base.is_jmp =3D DISAS_NORETURN; } =20 +/* + * Temp stub: generates address adjustment for PointerMasking + */ +static TCGv gen_pm_adjust_address(DisasContext *s, TCGv src) +{ + return src; +} + #ifndef CONFIG_USER_ONLY /* The states of mstatus_fs are: * 0 =3D disabled, 1 =3D initial, 2 =3D clean, 3 =3D dirty --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" From: Anatoly Parshintsev Signed-off-by: Anatoly Parshintsev Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/cpu.h | 2 ++ target/riscv/cpu_helper.c | 18 ++++++++++++++++++ target/riscv/translate.c | 39 +++++++++++++++++++++++++++++++++++++-- 3 files changed, 57 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index b2422e3f99..325908287d 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -410,6 +410,8 @@ FIELD(TB_FLAGS, HLSX, 10, 1) FIELD(TB_FLAGS, MSTATUS_HS_FS, 11, 2) /* The combination of MXL/SXL/UXL that applies to the current cpu mode. */ FIELD(TB_FLAGS, XL, 13, 2) +/* If PointerMasking should be applied */ +FIELD(TB_FLAGS, PM_ENABLED, 15, 1) =20 #ifdef TARGET_RISCV32 #define riscv_cpu_mxl(env) ((void)(env), MXL_RV32) diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 0d1132f39d..662228c238 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -107,6 +107,24 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, target_u= long *pc, flags =3D FIELD_DP32(flags, TB_FLAGS, MSTATUS_HS_FS, get_field(env->mstatus_hs, MSTATUS_FS)); } + if (riscv_has_ext(env, RVJ)) { + int priv =3D flags & TB_FLAGS_PRIV_MMU_MASK; + bool pm_enabled =3D false; + switch (priv) { + case PRV_U: + pm_enabled =3D env->mmte & U_PM_ENABLE; + break; + case PRV_S: + pm_enabled =3D env->mmte & S_PM_ENABLE; + break; + case PRV_M: + pm_enabled =3D env->mmte & M_PM_ENABLE; + break; + default: + g_assert_not_reached(); + } + flags =3D FIELD_DP32(flags, TB_FLAGS, PM_ENABLED, pm_enabled); + } #endif =20 flags =3D FIELD_DP32(flags, TB_FLAGS, XL, cpu_get_xl(env)); diff --git a/target/riscv/translate.c b/target/riscv/translate.c index a5e6fa145d..1d57bc97b5 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -36,6 +36,9 @@ static TCGv cpu_gpr[32], cpu_pc, cpu_vl; static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */ static TCGv load_res; static TCGv load_val; +/* globals for PM CSRs */ +static TCGv pm_mask[4]; +static TCGv pm_base[4]; =20 #include "exec/gen-icount.h" =20 @@ -83,6 +86,10 @@ typedef struct DisasContext { TCGv zero; /* Space for 3 operands plus 1 extra for address computation. */ TCGv temp[4]; + /* PointerMasking extension */ + bool pm_enabled; + TCGv pm_mask; + TCGv pm_base; } DisasContext; =20 static inline bool has_ext(DisasContext *ctx, uint32_t ext) @@ -272,11 +279,20 @@ static void gen_jal(DisasContext *ctx, int rd, target= _ulong imm) } =20 /* - * Temp stub: generates address adjustment for PointerMasking + * Generates address adjustment for PointerMasking */ static TCGv gen_pm_adjust_address(DisasContext *s, TCGv src) { - return src; + TCGv temp; + if (!s->pm_enabled) { + /* Load unmodified address */ + return src; + } else { + temp =3D temp_new(s); + tcg_gen_andc_tl(temp, src, s->pm_mask); + tcg_gen_or_tl(temp, temp, s->pm_base); + return temp; + } } =20 #ifndef CONFIG_USER_ONLY @@ -622,6 +638,10 @@ static void riscv_tr_init_disas_context(DisasContextBa= se *dcbase, CPUState *cs) ctx->cs =3D cs; ctx->ntemp =3D 0; memset(ctx->temp, 0, sizeof(ctx->temp)); + ctx->pm_enabled =3D FIELD_EX32(tb_flags, TB_FLAGS, PM_ENABLED); + int priv =3D tb_flags & TB_FLAGS_PRIV_MMU_MASK; + ctx->pm_mask =3D pm_mask[priv]; + ctx->pm_base =3D pm_base[priv]; =20 ctx->zero =3D tcg_constant_tl(0); } @@ -735,4 +755,19 @@ void riscv_translate_init(void) "load_res"); load_val =3D tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_= val), "load_val"); +#ifndef CONFIG_USER_ONLY + /* Assign PM CSRs to tcg globals */ + pm_mask[PRV_U] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmmask), "upmma= sk"); + pm_base[PRV_U] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmbase), "upmba= se"); + pm_mask[PRV_S] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmmask), "spmma= sk"); + pm_base[PRV_S] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmbase), "spmba= se"); + pm_mask[PRV_M] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmmask), "mpmma= sk"); + pm_base[PRV_M] =3D + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmbase), "mpmba= se"); +#endif } --=20 2.30.2 From nobody Wed May 15 14:30:10 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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bh=qRkVlY5FpL2EgGFei+8X6hixFzpDnG8xWG9BcSES9JE=; b=fLtX7mOz8e5EqALWvpaijkg0L73OhG7cwvQtZJ73d5uGDX058fssDQdwIxf4l94QaL QhRgK5u1hsy9tRlg8erxfMnKe4bvXLQrL7JFYCAkbNjYdLd7kTh1UFXwEb/dEcohAJBy Pb0S/VN5t/WlXFWZ1cTQqhbAJXVafETOsAEHVtTIh/Jsr1Wg7pxEJC7oiVGC2RX0Oh6f DBrmTHH6SqP3l03u7t5T65KFx/77UlY9AGKxJAcPRoW+2myfAMocvM/EuZ7nqskAWHfd z3hwkCH5BfayqcOge6eUGPG+nnC7eKcz+hAPH/5J3vkIKZBWAJEXc4F7akFUArY13fd/ F2pQ== X-Gm-Message-State: AOAM532hZGpe+Oftn9hQBKuQuJq9gMwjtVwnLGDLDEpbC0+Cgd7omJ81 tmyUgTchZkX53iSd5f6Hm1Q= X-Google-Smtp-Source: ABdhPJxTAzF+ZsCghQnGvurSKlCcAC5VXcSmurHZWdAEAckdVIJIA7CCpOlnjo16UalSU1E/3TkwVw== X-Received: by 2002:a17:906:1d1a:: with SMTP id n26mr24166573ejh.479.1635183386722; Mon, 25 Oct 2021 10:36:26 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v17 8/8] target/riscv: Allow experimental J-ext to be turned on Date: Mon, 25 Oct 2021 20:36:09 +0300 Message-Id: <20211025173609.2724490-9-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> References: <20211025173609.2724490-1-space.monkey.delivers@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::530; envelope-from=baturo.alexey@gmail.com; helo=mail-ed1-x530.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baturo.alexey@gmail.com, qemu-riscv@nongnu.org, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, richard.henderson@linaro.org, qemu-devel@nongnu.org, space.monkey.delivers@gmail.com, Alistair Francis , kupokupokupopo@gmail.com, palmer@dabbelt.com, Bin Meng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1635184335802100001 Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis Reviewed-by: Bin Meng Reviewed-by: Richard Henderson --- target/riscv/cpu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 16fac64806..7d53125dbc 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -562,6 +562,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error *= *errp) } set_vext_version(env, vext_version); } + if (cpu->cfg.ext_j) { + ext |=3D RVJ; + } =20 set_misa(env, env->misa_mxl, ext); } @@ -637,6 +640,7 @@ static Property riscv_cpu_properties[] =3D { DEFINE_PROP_BOOL("x-zbc", RISCVCPU, cfg.ext_zbc, false), DEFINE_PROP_BOOL("x-zbs", RISCVCPU, cfg.ext_zbs, false), DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false), + DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false), DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false), DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), --=20 2.30.2