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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/cpu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 0a33d387ba..0ea9fc65c8 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -72,6 +72,7 @@ #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_counters; bool ext_ifencei; --=20 2.20.1 From nobody Sun Feb 8 02:08:29 2026 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 ARC-Seal: i=1; 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Tue, 27 Apr 2021 15:06:23 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v8 2/6] [RISCV_PM] Support CSRs required for RISC-V PM extension except for the h-mode Date: Wed, 28 Apr 2021 01:06:11 +0300 Message-Id: <20210427220615.12763-3-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210427220615.12763-1-space.monkey.delivers@gmail.com> References: <20210427220615.12763-1-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::630; envelope-from=baturo.alexey@gmail.com; helo=mail-ej1-x630.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 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@wdc.com, 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) Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Baturo --- target/riscv/cpu.c | 5 + target/riscv/cpu.h | 12 ++ target/riscv/cpu_bits.h | 66 +++++++++++ target/riscv/csr.c | 239 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 322 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 7d6ed80f6b..c04911ec05 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -473,6 +473,11 @@ static void riscv_cpu_realize(DeviceState *dev, Error = **errp) if (cpu->cfg.ext_h) { target_misa |=3D RVH; } + if (cpu->cfg.ext_j) { +#ifndef CONFIG_USER_ONLY + env->mmte |=3D PM_EXT_INITIAL; +#endif + } if (cpu->cfg.ext_v) { target_misa |=3D RVV; if (!is_power_of_2(cpu->cfg.vlen)) { diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 0ea9fc65c8..19aa3b4769 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -238,6 +238,18 @@ struct CPURISCVState { =20 /* True if in debugger mode. */ bool debugger; + + /* + * CSRs for PM + * TODO: move these csr to appropriate groups + */ + 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/cpu_bits.h b/target/riscv/cpu_bits.h index caf4599207..f8e7cdb99b 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -354,6 +354,21 @@ #define CSR_MHPMCOUNTER30H 0xb9e #define CSR_MHPMCOUNTER31H 0xb9f =20 +/* Custom user register */ +#define CSR_UMTE 0x8c0 +#define CSR_UPMMASK 0x8c1 +#define CSR_UPMBASE 0x8c2 + +/* Custom machine register */ +#define CSR_MMTE 0x7c0 +#define CSR_MPMMASK 0x7c1 +#define CSR_MPMBASE 0x7c2 + +/* Custom supervisor register */ +#define CSR_SMTE 0x9c0 +#define CSR_SPMMASK 0x9c1 +#define CSR_SPMBASE 0x9c2 + /* Legacy Machine Protection and Translation (priv v1.9.1) */ #define CSR_MBASE 0x380 #define CSR_MBOUND 0x381 @@ -592,4 +607,55 @@ #define MIE_UTIE (1 << IRQ_U_TIMER) #define MIE_SSIE (1 << IRQ_S_SOFT) #define MIE_USIE (1 << IRQ_U_SOFT) + +/* general mte CSR bits*/ +#define PM_ENABLE 0x00000001ULL +#define PM_CURRENT 0x00000002ULL +#define PM_XS_MASK 0x00000003ULL + +/* PM 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 4ULL +#define M_OFFSET 6ULL + +#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 S_PM_ENABLE (PM_ENABLE << S_OFFSET) +#define S_PM_CURRENT (PM_CURRENT << S_OFFSET) +#define M_PM_ENABLE (PM_ENABLE << 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_S_PM_ENABLE S_PM_ENABLE +#define MMTE_S_PM_CURRENT S_PM_CURRENT +#define MMTE_M_PM_ENABLE M_PM_ENABLE +#define MMTE_MASK (MMTE_U_PM_ENABLE | MMTE_U_PM_CURRENT | \ + MMTE_S_PM_ENABLE | MMTE_S_PM_CURRENT | \ + MMTE_M_PM_ENABLE | MMTE_PM_XS_BITS) + +/* 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_S_PM_ENABLE S_PM_ENABLE +#define SMTE_S_PM_CURRENT S_PM_CURRENT +#define SMTE_MASK (SMTE_U_PM_ENABLE | SMTE_U_PM_CURRENT | \ + SMTE_S_PM_ENABLE | SMTE_S_PM_CURRENT | \ + 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_MASK (UMTE_U_PM_ENABLE | MMTE_U_PM_CURRENT) + #endif diff --git a/target/riscv/csr.c b/target/riscv/csr.c index d2585395bf..829e043ef9 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -184,6 +184,38 @@ static int hmode32(CPURISCVState *env, int csrno) =20 } =20 +static int umode(CPURISCVState *env, int csrno) +{ + return -!riscv_has_ext(env, RVU); +} + +/* Checks if PointerMasking registers could be accessed */ +static int pointer_masking(CPURISCVState *env, int csrno) { + /* Check if j-ext is present */ + int j_check =3D -!riscv_has_ext(env, RVJ); + int mode_check =3D 0; + int csr_priv =3D get_field(csrno, 0x300); + /* check if particular mode is present */ + switch (csr_priv) { + case PRV_M: + mode_check =3D any(env, csrno); + break; + case PRV_S: + mode_check =3D smode(env, csrno); + break; + case PRV_U: + mode_check =3D umode(env, csrno); + break; + default: + g_assert_not_reached(); + } + /* raise fault if no j-ext or particular mode are present */ + if (j_check < 0) { + return -RISCV_EXCP_ILLEGAL_INST; + } + return mode_check; +} + static int pmp(CPURISCVState *env, int csrno) { return -!riscv_feature(env, RISCV_FEATURE_PMP); @@ -1263,6 +1295,200 @@ static int write_pmpaddr(CPURISCVState *env, int cs= rno, target_ulong val) return 0; } =20 +/* + * Functions to access Pointer Masking feature registers + * We have to check if current priv lvl could modify + * csr in given mode + */ +static int check_pm_current_disabled(CPURISCVState *env, int csrno) +{ + int csr_priv =3D get_field(csrno, 0x300); + /* + * 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 0; + } + int cur_bit_pos; + switch (env->priv) { + case PRV_M: + /* m-mode is always allowed to modify registers, so allow */ + return 0; + case PRV_S: + cur_bit_pos =3D S_PM_CURRENT; + break; + case PRV_U: + cur_bit_pos =3D U_PM_CURRENT; + break; + default: + g_assert_not_reached(); + } + int pm_current =3D get_field(env->mmte, cur_bit_pos); + /* It's same priv lvl, so we allow to modify csr only if pm_current=3D= =3D1 */ + return !pm_current; +} + +static int read_mmte(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->mmte & MMTE_MASK; + return 0; +} + +static int write_mmte(CPURISCVState *env, int csrno, target_ulong val) +{ + target_ulong wpri_val =3D val & MMTE_MASK; + if (val !=3D wpri_val) { + qemu_log_mask(LOG_GUEST_ERROR, + "MMTE: WPRI violation written 0x%lx vs expected 0x%l= x\n", + val, wpri_val); + } + env->mmte =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_smte(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->mmte & SMTE_MASK; + return 0; +} + +static int 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, + "SMTE: WPRI violation written 0x%lx vs expected 0x%l= x\n", + val, wpri_val); + } + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + target_ulong new_val =3D val | (env->mmte & ~SMTE_MASK); + write_mmte(env, csrno, new_val); + return 0; +} + +static int read_umte(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->mmte & UMTE_MASK; + return 0; +} + +static int 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, + "UMTE: WPRI violation written 0x%lx vs expected 0x%l= x\n", + val, wpri_val); + } + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + target_ulong new_val =3D val | (env->mmte & ~UMTE_MASK); + write_mmte(env, csrno, new_val); + return 0; +} + +static int read_mpmmask(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->mpmmask; + return 0; +} + +static int write_mpmmask(CPURISCVState *env, int csrno, target_ulong val) +{ + env->mpmmask =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_spmmask(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->spmmask; + return 0; +} + +static int write_spmmask(CPURISCVState *env, int csrno, target_ulong val) +{ + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + env->spmmask =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_upmmask(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->upmmask; + return 0; +} + +static int write_upmmask(CPURISCVState *env, int csrno, target_ulong val) +{ + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + env->upmmask =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_mpmbase(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->mpmbase; + return 0; +} + +static int write_mpmbase(CPURISCVState *env, int csrno, target_ulong val) +{ + env->mpmbase =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_spmbase(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->spmbase; + return 0; +} + +static int write_spmbase(CPURISCVState *env, int csrno, target_ulong val) +{ + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + env->spmbase =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + +static int read_upmbase(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env->upmbase; + return 0; +} + +static int write_upmbase(CPURISCVState *env, int csrno, target_ulong val) +{ + if (check_pm_current_disabled(env, csrno)) { + return 0; + } + env->upmbase =3D val; + env->mstatus |=3D MSTATUS_XS | MSTATUS_SD; + env->mmte |=3D PM_EXT_DIRTY; + return 0; +} + #endif =20 /* @@ -1494,6 +1720,19 @@ 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 2.20.1 From nobody Sun Feb 8 02:08:29 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index c04911ec05..0682410f5d 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -287,6 +287,31 @@ static void riscv_cpu_dump_state(CPUState *cs, FILE *f= , int flags) qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "htval ", env->htval); qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mtval2 ", env->mtval2); } + if (riscv_has_ext(env, RVJ)) { + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mmte ", env->mmte); + switch (env->priv) { + case PRV_U: + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "upmbase ", + env->upmbase); + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "upmmask ", + env->upmmask); + break; + case PRV_S: + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "spmbase ", + env->spmbase); + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "spmmask ", + env->spmmask); + break; + case PRV_M: + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mpmbase ", + env->mpmbase); + qemu_fprintf(f, " %s " TARGET_FMT_lx "\n", "mpmmask ", + env->mpmmask); + break; + default: + g_assert_not_reached(); + } + } #endif =20 for (i =3D 0; i < 32; i++) { --=20 2.20.1 From nobody Sun Feb 8 02:08:29 2026 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 ARC-Seal: i=1; a=rsa-sha256; t=1619561324; cv=none; d=zohomail.com; s=zohoarc; b=F89sbQROHdZfdBGzTazLSKve08c3Ajmr+qXOXgQHF27Y54Z4kdaQOZasyUUwG5SUgVuGGOzhon5Fbh5+T0XhxOc8OvrvEYNyRSZ2V1rZu9n/8c13Nq8H0joyQGuyCQ7upPtOxzWYNstT/tcwH12jwszWVaKWi78oQXNrVjBfPx0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1619561324; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject; 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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 | 10 ++++++++++ 5 files changed, 19 insertions(+) diff --git a/target/riscv/insn_trans/trans_rva.c.inc b/target/riscv/insn_tr= ans/trans_rva.c.inc index be8a9f06dd..5559e347ba 100644 --- a/target/riscv/insn_trans/trans_rva.c.inc +++ b/target/riscv/insn_trans/trans_rva.c.inc @@ -26,6 +26,7 @@ static inline bool gen_lr(DisasContext *ctx, arg_atomic *= a, MemOp mop) if (a->rl) { tcg_gen_mb(TCG_MO_ALL | TCG_BAR_STRL); } + gen_pm_adjust_address(ctx, src1, 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); @@ -46,6 +47,7 @@ static inline bool gen_sc(DisasContext *ctx, arg_atomic *= a, MemOp mop) TCGLabel *l2 =3D gen_new_label(); =20 gen_get_gpr(src1, a->rs1); + gen_pm_adjust_address(ctx, src1, src1); tcg_gen_brcond_tl(TCG_COND_NE, load_res, src1, l1); =20 gen_get_gpr(src2, a->rs2); @@ -91,6 +93,7 @@ static bool gen_amo(DisasContext *ctx, arg_atomic *a, gen_get_gpr(src1, a->rs1); gen_get_gpr(src2, a->rs2); =20 + gen_pm_adjust_address(ctx, src1, src1); (*func)(src2, src1, src2, ctx->mem_idx, mop); =20 gen_set_gpr(a->rd, src2); diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_tr= ans/trans_rvd.c.inc index 4f832637fa..935342f66d 100644 --- a/target/riscv/insn_trans/trans_rvd.c.inc +++ b/target/riscv/insn_trans/trans_rvd.c.inc @@ -25,6 +25,7 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a) TCGv t0 =3D tcg_temp_new(); gen_get_gpr(t0, a->rs1); tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); =20 tcg_gen_qemu_ld_i64(cpu_fpr[a->rd], t0, ctx->mem_idx, MO_TEQ); =20 @@ -40,6 +41,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a) TCGv t0 =3D tcg_temp_new(); gen_get_gpr(t0, a->rs1); tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); =20 tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], t0, 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 3dfec8211d..04b3c3eb3d 100644 --- a/target/riscv/insn_trans/trans_rvf.c.inc +++ b/target/riscv/insn_trans/trans_rvf.c.inc @@ -30,6 +30,7 @@ static bool trans_flw(DisasContext *ctx, arg_flw *a) TCGv t0 =3D tcg_temp_new(); gen_get_gpr(t0, a->rs1); tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); =20 tcg_gen_qemu_ld_i64(cpu_fpr[a->rd], t0, ctx->mem_idx, MO_TEUL); gen_nanbox_s(cpu_fpr[a->rd], cpu_fpr[a->rd]); @@ -47,6 +48,7 @@ static bool trans_fsw(DisasContext *ctx, arg_fsw *a) gen_get_gpr(t0, a->rs1); =20 tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); =20 tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], t0, 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 d04ca0394c..bee7f6be46 100644 --- a/target/riscv/insn_trans/trans_rvi.c.inc +++ b/target/riscv/insn_trans/trans_rvi.c.inc @@ -141,6 +141,7 @@ static bool gen_load(DisasContext *ctx, arg_lb *a, MemO= p memop) TCGv t1 =3D tcg_temp_new(); gen_get_gpr(t0, a->rs1); tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); =20 tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, memop); gen_set_gpr(a->rd, t1); @@ -180,6 +181,7 @@ static bool gen_store(DisasContext *ctx, arg_sb *a, Mem= Op memop) TCGv dat =3D tcg_temp_new(); gen_get_gpr(t0, a->rs1); tcg_gen_addi_tl(t0, t0, a->imm); + gen_pm_adjust_address(ctx, t0, t0); gen_get_gpr(dat, a->rs2); =20 tcg_gen_qemu_st_tl(dat, t0, ctx->mem_idx, memop); diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 2f9f5ccc62..2e815a5912 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -89,6 +89,16 @@ static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in) tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32)); } =20 +/* + * Temp stub: generates address adjustment for PointerMasking + */ +static void gen_pm_adjust_address(DisasContext *s, + TCGv_i64 dst, + TCGv_i64 src) +{ + tcg_gen_mov_i64(dst, src); +} + /* * A narrow n-bit operation, where n < FLEN, checks that input operands * are correctly Nan-boxed, i.e., all upper FLEN - n bits are 1. --=20 2.20.1 From nobody Sun Feb 8 02:08:29 2026 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 --- target/riscv/cpu.h | 20 ++++++++++++++++++++ target/riscv/translate.c | 36 ++++++++++++++++++++++++++++++++++-- 2 files changed, 54 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 19aa3b4769..2edfc59712 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -407,6 +407,8 @@ FIELD(TB_FLAGS, SEW, 5, 3) FIELD(TB_FLAGS, VILL, 8, 1) /* Is a Hypervisor instruction load/store allowed? */ FIELD(TB_FLAGS, HLSX, 9, 1) +/* If PointerMasking should be applied */ +FIELD(TB_FLAGS, PM_ENABLED, 10, 1) =20 bool riscv_cpu_is_32bit(CPURISCVState *env); =20 @@ -464,6 +466,24 @@ static inline void cpu_get_tb_cpu_state(CPURISCVState = *env, target_ulong *pc, flags =3D FIELD_DP32(flags, TB_FLAGS, HLSX, 1); } } + if (riscv_has_ext(env, RVJ)) { + int priv =3D cpu_mmu_index(env, false); + 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 *pflags =3D flags; diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 2e815a5912..37706d56d5 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 @@ -64,6 +67,10 @@ typedef struct DisasContext { uint16_t vlen; uint16_t mlen; bool vl_eq_vlmax; + /* PointerMasking extension */ + bool pm_enabled; + TCGv pm_mask; + TCGv pm_base; CPUState *cs; } DisasContext; =20 @@ -90,13 +97,19 @@ static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in) } =20 /* - * Temp stub: generates address adjustment for PointerMasking + * Generates address adjustment for PointerMasking */ static void gen_pm_adjust_address(DisasContext *s, TCGv_i64 dst, TCGv_i64 src) { - tcg_gen_mov_i64(dst, src); + if (!s->pm_enabled) { + /* Load unmodified address */ + tcg_gen_mov_i64(dst, src); + } else { + tcg_gen_andc_i64(dst, src, s->pm_mask); + tcg_gen_or_i64(dst, dst, s->pm_base); + } } =20 /* @@ -657,6 +670,10 @@ static void riscv_tr_init_disas_context(DisasContextBa= se *dcbase, CPUState *cs) ctx->lmul =3D FIELD_EX32(tb_flags, TB_FLAGS, LMUL); ctx->mlen =3D 1 << (ctx->sew + 3 - ctx->lmul); ctx->vl_eq_vlmax =3D FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX); + ctx->pm_enabled =3D FIELD_EX32(tb_flags, TB_FLAGS, PM_ENABLED); + int priv =3D cpu_mmu_index(env, false) & TB_FLAGS_PRIV_MMU_MASK; + ctx->pm_mask =3D pm_mask[priv]; + ctx->pm_base =3D pm_base[priv]; ctx->cs =3D cs; } =20 @@ -777,4 +794,19 @@ 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 2.20.1 From nobody Sun Feb 8 02:08:29 2026 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 ARC-Seal: i=1; a=rsa-sha256; t=1619561503; cv=none; d=zohomail.com; s=zohoarc; b=PM1H2RTerPOmyEaEiF3NhxV4UT22E8OnLsK6yQAkk+6PNKtqKn8x/T+1M0KBDHVO+KdmGLcal5okexZxMQ9OrALP8LBwhYRqVrjxGxwoKRcIXmEXatDaDc2T134Tl03E/y8vzAKX+320xrcmAtTnrmnmBeJmBmLXSqGP2ntILhU= ARC-Message-Signature: i=1; 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Tue, 27 Apr 2021 15:06:27 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v8 6/6] [RISCV_PM] Allow experimental J-ext to be turned on Date: Wed, 28 Apr 2021 01:06:15 +0300 Message-Id: <20210427220615.12763-7-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210427220615.12763-1-space.monkey.delivers@gmail.com> References: <20210427220615.12763-1-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::529; envelope-from=baturo.alexey@gmail.com; helo=mail-ed1-x529.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 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) Content-Type: text/plain; charset="utf-8" Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 0682410f5d..fecc64d7ba 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -502,6 +502,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error *= *errp) #ifndef CONFIG_USER_ONLY env->mmte |=3D PM_EXT_INITIAL; #endif + target_misa |=3D RVJ; } if (cpu->cfg.ext_v) { target_misa |=3D RVV; @@ -574,6 +575,7 @@ static Property riscv_cpu_properties[] =3D { DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true), /* This is experimental so mark with 'x-' */ 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_BOOL("Counters", RISCVCPU, cfg.ext_counters, true), DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), --=20 2.20.1