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Mon, 16 Dec 2024 04:19:21 -0800 (PST) From: baturo.alexey@gmail.com To: Cc: baturo.alexey@gmail.com, richard.henderson@linaro.org, zhiwei_liu@linux.alibaba.com, dbarboza@ventanamicro.com, liwei1518@gmail.com, alistair23@gmail.com, frank.chang@sifive.com, palmer@dabbelt.com, Alistair.Francis@wdc.com, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v13 6/7] target/riscv: Apply pointer masking for virtualized memory accesses Date: Mon, 16 Dec 2024 15:19:06 +0300 Message-Id: <20241216121907.660504-7-baturo.alexey@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241216121907.660504-1-baturo.alexey@gmail.com> References: <20241216121907.660504-1-baturo.alexey@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; 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charset="utf-8" From: Alexey Baturo <baturo.alexey@gmail.com> Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com> --- target/riscv/cpu.h | 1 + target/riscv/cpu_helper.c | 18 +++++++++++++++ target/riscv/internals.h | 44 ++++++++++++++++++++++++++++++++++++ target/riscv/op_helper.c | 16 ++++++------- target/riscv/vector_helper.c | 21 ----------------- 5 files changed, 71 insertions(+), 29 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 38231fe21e..536ad20fdd 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -773,6 +773,7 @@ bool riscv_cpu_is_32bit(RISCVCPU *cpu); =20 bool riscv_cpu_virt_mem_enabled(CPURISCVState *env); RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env); +RISCVPmPmm riscv_pm_get_virt_pmm(CPURISCVState *env); uint32_t riscv_pm_get_pmlen(RISCVPmPmm pmm); =20 RISCVException riscv_csrr(CPURISCVState *env, int csrno, diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 480d2c2c8b..471d8d40a1 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -260,6 +260,24 @@ RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env) return pmm; } =20 +RISCVPmPmm riscv_pm_get_virt_pmm(CPURISCVState *env) +{ + RISCVPmPmm pmm =3D PMM_FIELD_DISABLED; +#ifndef CONFIG_USER_ONLY + int priv_mode =3D cpu_address_mode(env); + if (priv_mode =3D=3D PRV_U) { + pmm =3D get_field(env->hstatus, HSTATUS_HUPMM); + } else { + if (get_field(env->hstatus, HSTATUS_SPVP)) { + pmm =3D get_field(env->henvcfg, HENVCFG_PMM); + } else { + pmm =3D get_field(env->senvcfg, SENVCFG_PMM); + } + } +#endif + return pmm; +} + bool riscv_cpu_virt_mem_enabled(CPURISCVState *env) { bool virt_mem_en =3D false; diff --git a/target/riscv/internals.h b/target/riscv/internals.h index ddbdee885b..017f33af1f 100644 --- a/target/riscv/internals.h +++ b/target/riscv/internals.h @@ -142,4 +142,48 @@ static inline float16 check_nanbox_h(CPURISCVState *en= v, uint64_t f) /* Our implementation of CPUClass::has_work */ bool riscv_cpu_has_work(CPUState *cs); =20 +/* Zjpm addr masking routine */ +static inline target_ulong adjust_addr_body(CPURISCVState *env, + target_ulong addr, + bool is_virt) +{ + if (riscv_cpu_mxl(env) =3D=3D MXL_RV32) { + return addr; + } + RISCVPmPmm pmm =3D PMM_FIELD_DISABLED; + if (is_virt) { + pmm =3D riscv_pm_get_virt_pmm(env); + } else { + pmm =3D riscv_pm_get_pmm(env); + } + if (pmm =3D=3D PMM_FIELD_DISABLED) { + return addr; + } + uint32_t pmlen =3D riscv_pm_get_pmlen(pmm); + bool signext =3D false; + if (!is_virt) { + signext =3D riscv_cpu_virt_mem_enabled(env); + } + addr =3D addr << pmlen; + /* sign/zero extend masked address by N-1 bit */ + if (signext) { + addr =3D (target_long)addr >> pmlen; + } else { + addr =3D addr >> pmlen; + } + return addr; +} + +static inline target_ulong adjust_addr(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, false); +} + +static inline target_ulong adjust_addr_virt(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, true); +} + #endif diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c index eddedacf4b..20e5bd5088 100644 --- a/target/riscv/op_helper.c +++ b/target/riscv/op_helper.c @@ -472,7 +472,7 @@ target_ulong helper_hyp_hlv_bu(CPURISCVState *env, targ= et_ulong addr) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_UB, mmu_idx); =20 - return cpu_ldb_mmu(env, addr, oi, ra); + return cpu_ldb_mmu(env, adjust_addr_virt(env, addr), oi, ra); } =20 target_ulong helper_hyp_hlv_hu(CPURISCVState *env, target_ulong addr) @@ -481,7 +481,7 @@ target_ulong helper_hyp_hlv_hu(CPURISCVState *env, targ= et_ulong addr) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUW, mmu_idx); =20 - return cpu_ldw_mmu(env, addr, oi, ra); + return cpu_ldw_mmu(env, adjust_addr_virt(env, addr), oi, ra); } =20 target_ulong helper_hyp_hlv_wu(CPURISCVState *env, target_ulong addr) @@ -490,7 +490,7 @@ target_ulong helper_hyp_hlv_wu(CPURISCVState *env, targ= et_ulong addr) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUL, mmu_idx); =20 - return cpu_ldl_mmu(env, addr, oi, ra); + return cpu_ldl_mmu(env, adjust_addr_virt(env, addr), oi, ra); } =20 target_ulong helper_hyp_hlv_d(CPURISCVState *env, target_ulong addr) @@ -499,7 +499,7 @@ target_ulong helper_hyp_hlv_d(CPURISCVState *env, targe= t_ulong addr) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUQ, mmu_idx); =20 - return cpu_ldq_mmu(env, addr, oi, ra); + return cpu_ldq_mmu(env, adjust_addr_virt(env, addr), oi, ra); } =20 void helper_hyp_hsv_b(CPURISCVState *env, target_ulong addr, target_ulong = val) @@ -508,7 +508,7 @@ void helper_hyp_hsv_b(CPURISCVState *env, target_ulong = addr, target_ulong val) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_UB, mmu_idx); =20 - cpu_stb_mmu(env, addr, val, oi, ra); + cpu_stb_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } =20 void helper_hyp_hsv_h(CPURISCVState *env, target_ulong addr, target_ulong = val) @@ -517,7 +517,7 @@ void helper_hyp_hsv_h(CPURISCVState *env, target_ulong = addr, target_ulong val) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUW, mmu_idx); =20 - cpu_stw_mmu(env, addr, val, oi, ra); + cpu_stw_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } =20 void helper_hyp_hsv_w(CPURISCVState *env, target_ulong addr, target_ulong = val) @@ -526,7 +526,7 @@ void helper_hyp_hsv_w(CPURISCVState *env, target_ulong = addr, target_ulong val) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUL, mmu_idx); =20 - cpu_stl_mmu(env, addr, val, oi, ra); + cpu_stl_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } =20 void helper_hyp_hsv_d(CPURISCVState *env, target_ulong addr, target_ulong = val) @@ -535,7 +535,7 @@ void helper_hyp_hsv_d(CPURISCVState *env, target_ulong = addr, target_ulong val) int mmu_idx =3D check_access_hlsv(env, false, ra); MemOpIdx oi =3D make_memop_idx(MO_TEUQ, mmu_idx); =20 - cpu_stq_mmu(env, addr, val, oi, ra); + cpu_stq_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } =20 /* diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 37c6c198a5..a0093bcc9c 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -105,27 +105,6 @@ static inline uint32_t vext_max_elems(uint32_t desc, u= int32_t log2_esz) return scale < 0 ? vlenb >> -scale : vlenb << scale; } =20 -static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong ad= dr) -{ - if (riscv_cpu_mxl(env) =3D=3D MXL_RV32) { - return addr; - } - RISCVPmPmm pmm =3D riscv_pm_get_pmm(env); - if (pmm =3D=3D PMM_FIELD_DISABLED) { - return addr; - } - int pmlen =3D riscv_pm_get_pmlen(pmm); - bool signext =3D riscv_cpu_virt_mem_enabled(env); - addr =3D addr << pmlen; - /* sign/zero extend masked address by N-1 bit */ - if (signext) { - addr =3D (target_long)addr >> pmlen; - } else { - addr =3D addr >> pmlen; - } - return addr; -} - /* * This function checks watchpoint before real load operation. * --=20 2.39.5