| Message ID | 20240103185716.1790546-2-me@deliversmonkey.space (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Pointer Masking update for Zjpm v0.8 | expand |
On Thu, Jan 4, 2024 at 6:33 AM Alexey Baturo <baturo.alexey@gmail.com> wrote: > > From: Alexey Baturo <baturo.alexey@gmail.com> > > Zjpm v0.8 is almost frozen and it's much simplier compared to the existing one: > The newer version doesn't allow to specify custom mask or base for masking. > Instead it allows only certain options for masking top bits. > > Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com> > --- > target/riscv/cpu.c | 10 -- > target/riscv/cpu.h | 32 +--- > target/riscv/cpu_bits.h | 87 ---------- > target/riscv/cpu_helper.c | 52 ------ > target/riscv/csr.c | 326 ----------------------------------- > target/riscv/machine.c | 9 - > target/riscv/translate.c | 27 +-- > target/riscv/vector_helper.c | 2 +- > 8 files changed, 10 insertions(+), 535 deletions(-) > > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c > index 83c7c0cf07..1e6571ce99 100644 > --- a/target/riscv/cpu.c > +++ b/target/riscv/cpu.c > @@ -710,13 +710,6 @@ 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, > }; > > for (i = 0; i < ARRAY_SIZE(dump_csrs); ++i) { > @@ -891,8 +884,6 @@ static void riscv_cpu_reset_hold(Object *obj) > } > i++; > } > - /* mmte is supposed to have pm.current hardwired to 1 */ > - env->mmte |= (EXT_STATUS_INITIAL | MMTE_M_PM_CURRENT); > > /* > * Clear mseccfg and unlock all the PMP entries upon reset. > @@ -906,7 +897,6 @@ static void riscv_cpu_reset_hold(Object *obj) > pmp_unlock_entries(env); > #endif > env->xl = riscv_cpu_mxl(env); > - riscv_cpu_update_mask(env); > cs->exception_index = RISCV_EXCP_NONE; > env->load_res = -1; > set_default_nan_mode(1, &env->fp_status); > diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h > index d74b361be6..73f7004936 100644 > --- a/target/riscv/cpu.h > +++ b/target/riscv/cpu.h > @@ -374,18 +374,7 @@ struct CPUArchState { > /* 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; > - > - /* CSRs for execution environment configuration */ > + /* CSRs for execution enviornment configuration */ > uint64_t menvcfg; > uint64_t mstateen[SMSTATEEN_MAX_COUNT]; > uint64_t hstateen[SMSTATEEN_MAX_COUNT]; > @@ -393,8 +382,6 @@ struct CPUArchState { > target_ulong senvcfg; > uint64_t henvcfg; > #endif > - target_ulong cur_pmmask; > - target_ulong cur_pmbase; > > /* Fields from here on are preserved across CPU reset. */ > QEMUTimer *stimer; /* Internal timer for S-mode interrupt */ > @@ -543,17 +530,14 @@ FIELD(TB_FLAGS, VILL, 14, 1) > FIELD(TB_FLAGS, VSTART_EQ_ZERO, 15, 1) > /* The combination of MXL/SXL/UXL that applies to the current cpu mode. */ > FIELD(TB_FLAGS, XL, 16, 2) > -/* If PointerMasking should be applied */ > -FIELD(TB_FLAGS, PM_MASK_ENABLED, 18, 1) > -FIELD(TB_FLAGS, PM_BASE_ENABLED, 19, 1) > -FIELD(TB_FLAGS, VTA, 20, 1) > -FIELD(TB_FLAGS, VMA, 21, 1) > +FIELD(TB_FLAGS, VTA, 18, 1) > +FIELD(TB_FLAGS, VMA, 19, 1) > /* Native debug itrigger */ > -FIELD(TB_FLAGS, ITRIGGER, 22, 1) > +FIELD(TB_FLAGS, ITRIGGER, 20, 1) > /* Virtual mode enabled */ > -FIELD(TB_FLAGS, VIRT_ENABLED, 23, 1) > -FIELD(TB_FLAGS, PRIV, 24, 2) > -FIELD(TB_FLAGS, AXL, 26, 2) > +FIELD(TB_FLAGS, VIRT_ENABLED, 21, 1) > +FIELD(TB_FLAGS, PRIV, 22, 2) > +FIELD(TB_FLAGS, AXL, 24, 2) > > #ifdef TARGET_RISCV32 > #define riscv_cpu_mxl(env) ((void)(env), MXL_RV32) > @@ -680,8 +664,6 @@ static inline uint32_t vext_get_vlmax(RISCVCPU *cpu, target_ulong vtype) > void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, > uint64_t *cs_base, uint32_t *pflags); > > -void riscv_cpu_update_mask(CPURISCVState *env); > - > RISCVException riscv_csrrw(CPURISCVState *env, int csrno, > target_ulong *ret_value, > target_ulong new_value, target_ulong write_mask); > diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h > index ebd7917d49..1c92458a01 100644 > --- a/target/riscv/cpu_bits.h > +++ b/target/riscv/cpu_bits.h > @@ -491,37 +491,6 @@ > #define CSR_MHPMCOUNTER30H 0xb9e > #define CSR_MHPMCOUNTER31H 0xb9f > > -/* > - * 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 > #define CSR_SCOUNTOVF 0xda0 > > /* Crypto Extension */ > @@ -741,11 +710,6 @@ typedef enum RISCVException { > #define VS_MODE_INTERRUPTS ((uint64_t)(MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)) > #define HS_MODE_INTERRUPTS ((uint64_t)(MIP_SGEIP | VS_MODE_INTERRUPTS)) > > -/* General PointerMasking CSR bits */ > -#define PM_ENABLE 0x00000001ULL > -#define PM_CURRENT 0x00000002ULL > -#define PM_INSN 0x00000004ULL > - > /* Execution environment configuration bits */ > #define MENVCFG_FIOM BIT(0) > #define MENVCFG_CBIE (3UL << 4) > @@ -778,57 +742,6 @@ typedef enum RISCVException { > #define HENVCFGH_PBMTE MENVCFGH_PBMTE > #define HENVCFGH_STCE MENVCFGH_STCE > > -/* 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 (EXT_STATUS_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_INSN | \ > - MMTE_S_PM_ENABLE | MMTE_S_PM_CURRENT | MMTE_S_PM_INSN | \ > - MMTE_M_PM_ENABLE | MMTE_M_PM_CURRENT | MMTE_M_PM_INSN | \ > - 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_INSN | \ > - SMTE_S_PM_ENABLE | SMTE_S_PM_CURRENT | SMTE_S_PM_INSN | \ > - 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_INSN) > - > /* MISELECT, SISELECT, and VSISELECT bits (AIA) */ > #define ISELECT_IPRIO0 0x30 > #define ISELECT_IPRIO15 0x3f > diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c > index e7e23b34f4..a3d477d226 100644 > --- a/target/riscv/cpu_helper.c > +++ b/target/riscv/cpu_helper.c > @@ -135,61 +135,10 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, > flags = FIELD_DP32(flags, TB_FLAGS, VS, vs); > flags = FIELD_DP32(flags, TB_FLAGS, XL, env->xl); > flags = FIELD_DP32(flags, TB_FLAGS, AXL, cpu_address_xl(env)); > - if (env->cur_pmmask != 0) { > - flags = FIELD_DP32(flags, TB_FLAGS, PM_MASK_ENABLED, 1); > - } > - if (env->cur_pmbase != 0) { > - flags = FIELD_DP32(flags, TB_FLAGS, PM_BASE_ENABLED, 1); > - } > > *pflags = flags; > } > > -void riscv_cpu_update_mask(CPURISCVState *env) > -{ > - target_ulong mask = 0, base = 0; > - RISCVMXL xl = env->xl; > - /* > - * TODO: Current RVJ spec does not specify > - * how the extension interacts with XLEN. > - */ > -#ifndef CONFIG_USER_ONLY > - int mode = cpu_address_mode(env); > - xl = cpu_get_xl(env, mode); > - if (riscv_has_ext(env, RVJ)) { > - switch (mode) { > - case PRV_M: > - if (env->mmte & M_PM_ENABLE) { > - mask = env->mpmmask; > - base = env->mpmbase; > - } > - break; > - case PRV_S: > - if (env->mmte & S_PM_ENABLE) { > - mask = env->spmmask; > - base = env->spmbase; > - } > - break; > - case PRV_U: > - if (env->mmte & U_PM_ENABLE) { > - mask = env->upmmask; > - base = env->upmbase; > - } > - break; > - default: > - g_assert_not_reached(); > - } > - } > -#endif > - if (xl == MXL_RV32) { > - env->cur_pmmask = mask & UINT32_MAX; > - env->cur_pmbase = base & UINT32_MAX; > - } else { > - env->cur_pmmask = mask; > - env->cur_pmbase = base; > - } > -} > - > #ifndef CONFIG_USER_ONLY > > /* > @@ -721,7 +670,6 @@ void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv) > /* tlb_flush is unnecessary as mode is contained in mmu_idx */ > env->priv = newpriv; > env->xl = cpu_recompute_xl(env); > - riscv_cpu_update_mask(env); > > /* > * Clear the load reservation - otherwise a reservation placed in one > diff --git a/target/riscv/csr.c b/target/riscv/csr.c > index fde7ce1a53..ea4e1ac6ef 100644 > --- a/target/riscv/csr.c > +++ b/target/riscv/csr.c > @@ -483,16 +483,6 @@ static RISCVException hgatp(CPURISCVState *env, int csrno) > return hmode(env, csrno); > } > > -/* 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 int aia_hmode(CPURISCVState *env, int csrno) > { > if (!riscv_cpu_cfg(env)->ext_ssaia) { > @@ -1355,7 +1345,6 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno, > env->xl = cpu_recompute_xl(env); > } > > - riscv_cpu_update_mask(env); > return RISCV_EXCP_NONE; > } > > @@ -3900,302 +3889,6 @@ static RISCVException read_tinfo(CPURISCVState *env, int csrno, > return RISCV_EXCP_NONE; > } > > -/* > - * 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 = get_field(csrno, 0x300); > - int pm_current; > - > - if (env->debugger) { > - return false; > - } > - /* > - * If priv lvls differ that means we're accessing csr from higher priv lvl, > - * so allow the access > - */ > - if (env->priv != csr_priv) { > - return false; > - } > - switch (env->priv) { > - case PRV_M: > - pm_current = get_field(env->mmte, M_PM_CURRENT); > - break; > - case PRV_S: > - pm_current = get_field(env->mmte, S_PM_CURRENT); > - break; > - case PRV_U: > - pm_current = 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==1 */ > - return !pm_current; > -} > - > -static RISCVException read_mmte(CPURISCVState *env, int csrno, > - target_ulong *val) > -{ > - *val = 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 = val & MMTE_MASK; > - > - if (val != 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 |= MMTE_M_PM_CURRENT; > - > - /* hardwiring pm.instruction bit to 0, since it's not supported yet */ > - wpri_val &= ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN); > - env->mmte = wpri_val | EXT_STATUS_DIRTY; > - riscv_cpu_update_mask(env); > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->mmte & SMTE_MASK; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_smte(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - target_ulong wpri_val = val & SMTE_MASK; > - > - if (val != 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==0 we can't modify current PM CSRs */ > - if (check_pm_current_disabled(env, csrno)) { > - return RISCV_EXCP_NONE; > - } > - > - wpri_val |= (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 = env->mmte & UMTE_MASK; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_umte(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - target_ulong wpri_val = val & UMTE_MASK; > - > - if (val != 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 |= (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 = env->mpmmask; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_mpmmask(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - env->mpmmask = val; > - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { > - env->cur_pmmask = val; > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->spmmask; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_spmmask(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - /* if pm.current==0 we can't modify current PM CSRs */ > - if (check_pm_current_disabled(env, csrno)) { > - return RISCV_EXCP_NONE; > - } > - env->spmmask = val; > - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { > - env->cur_pmmask = val; > - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { > - env->cur_pmmask &= UINT32_MAX; > - } > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->upmmask; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_upmmask(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - /* if pm.current==0 we can't modify current PM CSRs */ > - if (check_pm_current_disabled(env, csrno)) { > - return RISCV_EXCP_NONE; > - } > - env->upmmask = val; > - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { > - env->cur_pmmask = val; > - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { > - env->cur_pmmask &= UINT32_MAX; > - } > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->mpmbase; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_mpmbase(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - env->mpmbase = val; > - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { > - env->cur_pmbase = val; > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->spmbase; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_spmbase(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - /* if pm.current==0 we can't modify current PM CSRs */ > - if (check_pm_current_disabled(env, csrno)) { > - return RISCV_EXCP_NONE; > - } > - env->spmbase = val; > - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { > - env->cur_pmbase = val; > - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { > - env->cur_pmbase &= UINT32_MAX; > - } > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = 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 = env->upmbase; > - return RISCV_EXCP_NONE; > -} > - > -static RISCVException write_upmbase(CPURISCVState *env, int csrno, > - target_ulong val) > -{ > - uint64_t mstatus; > - > - /* if pm.current==0 we can't modify current PM CSRs */ > - if (check_pm_current_disabled(env, csrno)) { > - return RISCV_EXCP_NONE; > - } > - env->upmbase = val; > - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { > - env->cur_pmbase = val; > - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { > - env->cur_pmbase &= UINT32_MAX; > - } > - } > - env->mmte |= EXT_STATUS_DIRTY; > - > - /* Set XS and SD bits, since PM CSRs are dirty */ > - mstatus = env->mstatus | MSTATUS_XS; > - write_mstatus(env, csrno, mstatus); > - return RISCV_EXCP_NONE; > -} > - > #endif > > /* Crypto Extension */ > @@ -4800,25 +4493,6 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { > [CSR_TDATA3] = { "tdata3", debug, read_tdata, write_tdata }, > [CSR_TINFO] = { "tinfo", debug, read_tinfo, write_ignore }, > > - /* User Pointer Masking */ > - [CSR_UMTE] = { "umte", pointer_masking, read_umte, write_umte }, > - [CSR_UPMMASK] = { "upmmask", pointer_masking, read_upmmask, > - write_upmmask }, > - [CSR_UPMBASE] = { "upmbase", pointer_masking, read_upmbase, > - write_upmbase }, > - /* Machine Pointer Masking */ > - [CSR_MMTE] = { "mmte", pointer_masking, read_mmte, write_mmte }, > - [CSR_MPMMASK] = { "mpmmask", pointer_masking, read_mpmmask, > - write_mpmmask }, > - [CSR_MPMBASE] = { "mpmbase", pointer_masking, read_mpmbase, > - write_mpmbase }, > - /* Supervisor Pointer Masking */ > - [CSR_SMTE] = { "smte", pointer_masking, read_smte, write_smte }, > - [CSR_SPMMASK] = { "spmmask", pointer_masking, read_spmmask, > - write_spmmask }, > - [CSR_SPMBASE] = { "spmbase", pointer_masking, read_spmbase, > - write_spmbase }, > - > /* Performance Counters */ > [CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_hpmcounter }, > [CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_hpmcounter }, > diff --git a/target/riscv/machine.c b/target/riscv/machine.c > index fdde243e04..860fe56d43 100644 > --- a/target/riscv/machine.c > +++ b/target/riscv/machine.c > @@ -164,14 +164,6 @@ static const VMStateDescription vmstate_pointermasking = { > .minimum_version_id = 1, The version_id and minimum_version_id should be bumped here Alistair > .needed = pointermasking_needed, > .fields = (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() > } > }; > @@ -267,7 +259,6 @@ static int riscv_cpu_post_load(void *opaque, int version_id) > CPURISCVState *env = &cpu->env; > > env->xl = cpu_recompute_xl(env); > - riscv_cpu_update_mask(env); > return 0; > } > > diff --git a/target/riscv/translate.c b/target/riscv/translate.c > index f0be79bb16..6b4b9a671c 100644 > --- a/target/riscv/translate.c > +++ b/target/riscv/translate.c > @@ -42,9 +42,6 @@ static TCGv cpu_gpr[32], cpu_gprh[32], cpu_pc, cpu_vl, cpu_vstart; > 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; > -static TCGv pm_base; > > /* > * If an operation is being performed on less than TARGET_LONG_BITS, > @@ -106,9 +103,6 @@ typedef struct DisasContext { > bool vl_eq_vlmax; > CPUState *cs; > TCGv zero; > - /* PointerMasking extension */ > - bool pm_mask_enabled; > - bool pm_base_enabled; > /* Use icount trigger for native debug */ > bool itrigger; > /* FRM is known to contain a valid value. */ > @@ -582,14 +576,9 @@ static TCGv get_address(DisasContext *ctx, int rs1, int imm) > TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); > > tcg_gen_addi_tl(addr, src1, imm); > - if (ctx->pm_mask_enabled) { > - tcg_gen_andc_tl(addr, addr, pm_mask); > - } else if (get_address_xl(ctx) == MXL_RV32) { > + if (get_address_xl(ctx) == MXL_RV32) { > tcg_gen_ext32u_tl(addr, addr); > } > - if (ctx->pm_base_enabled) { > - tcg_gen_or_tl(addr, addr, pm_base); > - } > > return addr; > } > @@ -601,14 +590,9 @@ static TCGv get_address_indexed(DisasContext *ctx, int rs1, TCGv offs) > TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); > > tcg_gen_add_tl(addr, src1, offs); > - if (ctx->pm_mask_enabled) { > - tcg_gen_andc_tl(addr, addr, pm_mask); > - } else if (get_xl(ctx) == MXL_RV32) { > + if (get_xl(ctx) == MXL_RV32) { > tcg_gen_ext32u_tl(addr, addr); > } > - if (ctx->pm_base_enabled) { > - tcg_gen_or_tl(addr, addr, pm_base); > - } > return addr; > } > > @@ -1192,8 +1176,6 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) > ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL); > ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL); > ctx->cs = cs; > - ctx->pm_mask_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_MASK_ENABLED); > - ctx->pm_base_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_BASE_ENABLED); > ctx->itrigger = FIELD_EX32(tb_flags, TB_FLAGS, ITRIGGER); > ctx->zero = tcg_constant_tl(0); > ctx->virt_inst_excp = false; > @@ -1325,9 +1307,4 @@ void riscv_translate_init(void) > "load_res"); > load_val = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, load_val), > "load_val"); > - /* Assign PM CSRs to tcg globals */ > - pm_mask = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, cur_pmmask), > - "pmmask"); > - pm_base = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, cur_pmbase), > - "pmbase"); > } > diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c > index c1c3a4d1ea..8e7a8e80a0 100644 > --- a/target/riscv/vector_helper.c > +++ b/target/riscv/vector_helper.c > @@ -94,7 +94,7 @@ static inline uint32_t vext_max_elems(uint32_t desc, uint32_t log2_esz) > > static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong addr) > { > - return (addr & ~env->cur_pmmask) | env->cur_pmbase; > + return addr; > } > > /* > -- > 2.34.1 > >
Sure, I would do it in the next updated series. пт, 5 янв. 2024 г. в 08:04, Alistair Francis <alistair23@gmail.com>: > On Thu, Jan 4, 2024 at 6:33 AM Alexey Baturo <baturo.alexey@gmail.com> > wrote: > > > > From: Alexey Baturo <baturo.alexey@gmail.com> > > > > Zjpm v0.8 is almost frozen and it's much simplier compared to the > existing one: > > The newer version doesn't allow to specify custom mask or base for > masking. > > Instead it allows only certain options for masking top bits. > > > > Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com> > > --- > > target/riscv/cpu.c | 10 -- > > target/riscv/cpu.h | 32 +--- > > target/riscv/cpu_bits.h | 87 ---------- > > target/riscv/cpu_helper.c | 52 ------ > > target/riscv/csr.c | 326 ----------------------------------- > > target/riscv/machine.c | 9 - > > target/riscv/translate.c | 27 +-- > > target/riscv/vector_helper.c | 2 +- > > 8 files changed, 10 insertions(+), 535 deletions(-) > > > > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c > > index 83c7c0cf07..1e6571ce99 100644 > > --- a/target/riscv/cpu.c > > +++ b/target/riscv/cpu.c > > @@ -710,13 +710,6 @@ 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, > > }; > > > > for (i = 0; i < ARRAY_SIZE(dump_csrs); ++i) { > > @@ -891,8 +884,6 @@ static void riscv_cpu_reset_hold(Object *obj) > > } > > i++; > > } > > - /* mmte is supposed to have pm.current hardwired to 1 */ > > - env->mmte |= (EXT_STATUS_INITIAL | MMTE_M_PM_CURRENT); > > > > /* > > * Clear mseccfg and unlock all the PMP entries upon reset. > > @@ -906,7 +897,6 @@ static void riscv_cpu_reset_hold(Object *obj) > > pmp_unlock_entries(env); > > #endif > > env->xl = riscv_cpu_mxl(env); > > - riscv_cpu_update_mask(env); > > cs->exception_index = RISCV_EXCP_NONE; > > env->load_res = -1; > > set_default_nan_mode(1, &env->fp_status); > > diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h > > index d74b361be6..73f7004936 100644 > > --- a/target/riscv/cpu.h > > +++ b/target/riscv/cpu.h > > @@ -374,18 +374,7 @@ struct CPUArchState { > > /* 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; > > - > > - /* CSRs for execution environment configuration */ > > + /* CSRs for execution enviornment configuration */ > > uint64_t menvcfg; > > uint64_t mstateen[SMSTATEEN_MAX_COUNT]; > > uint64_t hstateen[SMSTATEEN_MAX_COUNT]; > > @@ -393,8 +382,6 @@ struct CPUArchState { > > target_ulong senvcfg; > > uint64_t henvcfg; > > #endif > > - target_ulong cur_pmmask; > > - target_ulong cur_pmbase; > > > > /* Fields from here on are preserved across CPU reset. */ > > QEMUTimer *stimer; /* Internal timer for S-mode interrupt */ > > @@ -543,17 +530,14 @@ FIELD(TB_FLAGS, VILL, 14, 1) > > FIELD(TB_FLAGS, VSTART_EQ_ZERO, 15, 1) > > /* The combination of MXL/SXL/UXL that applies to the current cpu mode. > */ > > FIELD(TB_FLAGS, XL, 16, 2) > > -/* If PointerMasking should be applied */ > > -FIELD(TB_FLAGS, PM_MASK_ENABLED, 18, 1) > > -FIELD(TB_FLAGS, PM_BASE_ENABLED, 19, 1) > > -FIELD(TB_FLAGS, VTA, 20, 1) > > -FIELD(TB_FLAGS, VMA, 21, 1) > > +FIELD(TB_FLAGS, VTA, 18, 1) > > +FIELD(TB_FLAGS, VMA, 19, 1) > > /* Native debug itrigger */ > > -FIELD(TB_FLAGS, ITRIGGER, 22, 1) > > +FIELD(TB_FLAGS, ITRIGGER, 20, 1) > > /* Virtual mode enabled */ > > -FIELD(TB_FLAGS, VIRT_ENABLED, 23, 1) > > -FIELD(TB_FLAGS, PRIV, 24, 2) > > -FIELD(TB_FLAGS, AXL, 26, 2) > > +FIELD(TB_FLAGS, VIRT_ENABLED, 21, 1) > > +FIELD(TB_FLAGS, PRIV, 22, 2) > > +FIELD(TB_FLAGS, AXL, 24, 2) > > > > #ifdef TARGET_RISCV32 > > #define riscv_cpu_mxl(env) ((void)(env), MXL_RV32) > > @@ -680,8 +664,6 @@ static inline uint32_t vext_get_vlmax(RISCVCPU *cpu, > target_ulong vtype) > > void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, > > uint64_t *cs_base, uint32_t *pflags); > > > > -void riscv_cpu_update_mask(CPURISCVState *env); > > - > > RISCVException riscv_csrrw(CPURISCVState *env, int csrno, > > target_ulong *ret_value, > > target_ulong new_value, target_ulong > write_mask); > > diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h > > index ebd7917d49..1c92458a01 100644 > > --- a/target/riscv/cpu_bits.h > > +++ b/target/riscv/cpu_bits.h > > @@ -491,37 +491,6 @@ > > #define CSR_MHPMCOUNTER30H 0xb9e > > #define CSR_MHPMCOUNTER31H 0xb9f > > > > -/* > > - * 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 > > #define CSR_SCOUNTOVF 0xda0 > > > > /* Crypto Extension */ > > @@ -741,11 +710,6 @@ typedef enum RISCVException { > > #define VS_MODE_INTERRUPTS ((uint64_t)(MIP_VSSIP | MIP_VSTIP | > MIP_VSEIP)) > > #define HS_MODE_INTERRUPTS ((uint64_t)(MIP_SGEIP | VS_MODE_INTERRUPTS)) > > > > -/* General PointerMasking CSR bits */ > > -#define PM_ENABLE 0x00000001ULL > > -#define PM_CURRENT 0x00000002ULL > > -#define PM_INSN 0x00000004ULL > > - > > /* Execution environment configuration bits */ > > #define MENVCFG_FIOM BIT(0) > > #define MENVCFG_CBIE (3UL << 4) > > @@ -778,57 +742,6 @@ typedef enum RISCVException { > > #define HENVCFGH_PBMTE MENVCFGH_PBMTE > > #define HENVCFGH_STCE MENVCFGH_STCE > > > > -/* 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 (EXT_STATUS_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_INSN | \ > > - MMTE_S_PM_ENABLE | MMTE_S_PM_CURRENT | > MMTE_S_PM_INSN | \ > > - MMTE_M_PM_ENABLE | MMTE_M_PM_CURRENT | > MMTE_M_PM_INSN | \ > > - 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_INSN | \ > > - SMTE_S_PM_ENABLE | SMTE_S_PM_CURRENT | > SMTE_S_PM_INSN | \ > > - 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_INSN) > > - > > /* MISELECT, SISELECT, and VSISELECT bits (AIA) */ > > #define ISELECT_IPRIO0 0x30 > > #define ISELECT_IPRIO15 0x3f > > diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c > > index e7e23b34f4..a3d477d226 100644 > > --- a/target/riscv/cpu_helper.c > > +++ b/target/riscv/cpu_helper.c > > @@ -135,61 +135,10 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, > vaddr *pc, > > flags = FIELD_DP32(flags, TB_FLAGS, VS, vs); > > flags = FIELD_DP32(flags, TB_FLAGS, XL, env->xl); > > flags = FIELD_DP32(flags, TB_FLAGS, AXL, cpu_address_xl(env)); > > - if (env->cur_pmmask != 0) { > > - flags = FIELD_DP32(flags, TB_FLAGS, PM_MASK_ENABLED, 1); > > - } > > - if (env->cur_pmbase != 0) { > > - flags = FIELD_DP32(flags, TB_FLAGS, PM_BASE_ENABLED, 1); > > - } > > > > *pflags = flags; > > } > > > > -void riscv_cpu_update_mask(CPURISCVState *env) > > -{ > > - target_ulong mask = 0, base = 0; > > - RISCVMXL xl = env->xl; > > - /* > > - * TODO: Current RVJ spec does not specify > > - * how the extension interacts with XLEN. > > - */ > > -#ifndef CONFIG_USER_ONLY > > - int mode = cpu_address_mode(env); > > - xl = cpu_get_xl(env, mode); > > - if (riscv_has_ext(env, RVJ)) { > > - switch (mode) { > > - case PRV_M: > > - if (env->mmte & M_PM_ENABLE) { > > - mask = env->mpmmask; > > - base = env->mpmbase; > > - } > > - break; > > - case PRV_S: > > - if (env->mmte & S_PM_ENABLE) { > > - mask = env->spmmask; > > - base = env->spmbase; > > - } > > - break; > > - case PRV_U: > > - if (env->mmte & U_PM_ENABLE) { > > - mask = env->upmmask; > > - base = env->upmbase; > > - } > > - break; > > - default: > > - g_assert_not_reached(); > > - } > > - } > > -#endif > > - if (xl == MXL_RV32) { > > - env->cur_pmmask = mask & UINT32_MAX; > > - env->cur_pmbase = base & UINT32_MAX; > > - } else { > > - env->cur_pmmask = mask; > > - env->cur_pmbase = base; > > - } > > -} > > - > > #ifndef CONFIG_USER_ONLY > > > > /* > > @@ -721,7 +670,6 @@ void riscv_cpu_set_mode(CPURISCVState *env, > target_ulong newpriv) > > /* tlb_flush is unnecessary as mode is contained in mmu_idx */ > > env->priv = newpriv; > > env->xl = cpu_recompute_xl(env); > > - riscv_cpu_update_mask(env); > > > > /* > > * Clear the load reservation - otherwise a reservation placed in > one > > diff --git a/target/riscv/csr.c b/target/riscv/csr.c > > index fde7ce1a53..ea4e1ac6ef 100644 > > --- a/target/riscv/csr.c > > +++ b/target/riscv/csr.c > > @@ -483,16 +483,6 @@ static RISCVException hgatp(CPURISCVState *env, int > csrno) > > return hmode(env, csrno); > > } > > > > -/* 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 int aia_hmode(CPURISCVState *env, int csrno) > > { > > if (!riscv_cpu_cfg(env)->ext_ssaia) { > > @@ -1355,7 +1345,6 @@ static RISCVException write_mstatus(CPURISCVState > *env, int csrno, > > env->xl = cpu_recompute_xl(env); > > } > > > > - riscv_cpu_update_mask(env); > > return RISCV_EXCP_NONE; > > } > > > > @@ -3900,302 +3889,6 @@ static RISCVException read_tinfo(CPURISCVState > *env, int csrno, > > return RISCV_EXCP_NONE; > > } > > > > -/* > > - * 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 = get_field(csrno, 0x300); > > - int pm_current; > > - > > - if (env->debugger) { > > - return false; > > - } > > - /* > > - * If priv lvls differ that means we're accessing csr from higher > priv lvl, > > - * so allow the access > > - */ > > - if (env->priv != csr_priv) { > > - return false; > > - } > > - switch (env->priv) { > > - case PRV_M: > > - pm_current = get_field(env->mmte, M_PM_CURRENT); > > - break; > > - case PRV_S: > > - pm_current = get_field(env->mmte, S_PM_CURRENT); > > - break; > > - case PRV_U: > > - pm_current = 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==1 */ > > - return !pm_current; > > -} > > - > > -static RISCVException read_mmte(CPURISCVState *env, int csrno, > > - target_ulong *val) > > -{ > > - *val = 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 = val & MMTE_MASK; > > - > > - if (val != 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 |= MMTE_M_PM_CURRENT; > > - > > - /* hardwiring pm.instruction bit to 0, since it's not supported yet > */ > > - wpri_val &= ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN); > > - env->mmte = wpri_val | EXT_STATUS_DIRTY; > > - riscv_cpu_update_mask(env); > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->mmte & SMTE_MASK; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_smte(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - target_ulong wpri_val = val & SMTE_MASK; > > - > > - if (val != 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==0 we can't modify current PM CSRs */ > > - if (check_pm_current_disabled(env, csrno)) { > > - return RISCV_EXCP_NONE; > > - } > > - > > - wpri_val |= (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 = env->mmte & UMTE_MASK; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_umte(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - target_ulong wpri_val = val & UMTE_MASK; > > - > > - if (val != 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 |= (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 = env->mpmmask; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_mpmmask(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - env->mpmmask = val; > > - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { > > - env->cur_pmmask = val; > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->spmmask; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_spmmask(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - /* if pm.current==0 we can't modify current PM CSRs */ > > - if (check_pm_current_disabled(env, csrno)) { > > - return RISCV_EXCP_NONE; > > - } > > - env->spmmask = val; > > - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { > > - env->cur_pmmask = val; > > - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { > > - env->cur_pmmask &= UINT32_MAX; > > - } > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->upmmask; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_upmmask(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - /* if pm.current==0 we can't modify current PM CSRs */ > > - if (check_pm_current_disabled(env, csrno)) { > > - return RISCV_EXCP_NONE; > > - } > > - env->upmmask = val; > > - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { > > - env->cur_pmmask = val; > > - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { > > - env->cur_pmmask &= UINT32_MAX; > > - } > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->mpmbase; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_mpmbase(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - env->mpmbase = val; > > - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { > > - env->cur_pmbase = val; > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->spmbase; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_spmbase(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - /* if pm.current==0 we can't modify current PM CSRs */ > > - if (check_pm_current_disabled(env, csrno)) { > > - return RISCV_EXCP_NONE; > > - } > > - env->spmbase = val; > > - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { > > - env->cur_pmbase = val; > > - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { > > - env->cur_pmbase &= UINT32_MAX; > > - } > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = 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 = env->upmbase; > > - return RISCV_EXCP_NONE; > > -} > > - > > -static RISCVException write_upmbase(CPURISCVState *env, int csrno, > > - target_ulong val) > > -{ > > - uint64_t mstatus; > > - > > - /* if pm.current==0 we can't modify current PM CSRs */ > > - if (check_pm_current_disabled(env, csrno)) { > > - return RISCV_EXCP_NONE; > > - } > > - env->upmbase = val; > > - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { > > - env->cur_pmbase = val; > > - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { > > - env->cur_pmbase &= UINT32_MAX; > > - } > > - } > > - env->mmte |= EXT_STATUS_DIRTY; > > - > > - /* Set XS and SD bits, since PM CSRs are dirty */ > > - mstatus = env->mstatus | MSTATUS_XS; > > - write_mstatus(env, csrno, mstatus); > > - return RISCV_EXCP_NONE; > > -} > > - > > #endif > > > > /* Crypto Extension */ > > @@ -4800,25 +4493,6 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { > > [CSR_TDATA3] = { "tdata3", debug, read_tdata, write_tdata > }, > > [CSR_TINFO] = { "tinfo", debug, read_tinfo, write_ignore > }, > > > > - /* User Pointer Masking */ > > - [CSR_UMTE] = { "umte", pointer_masking, read_umte, > write_umte }, > > - [CSR_UPMMASK] = { "upmmask", pointer_masking, read_upmmask, > > - write_upmmask > }, > > - [CSR_UPMBASE] = { "upmbase", pointer_masking, read_upmbase, > > - write_upmbase > }, > > - /* Machine Pointer Masking */ > > - [CSR_MMTE] = { "mmte", pointer_masking, read_mmte, > write_mmte }, > > - [CSR_MPMMASK] = { "mpmmask", pointer_masking, read_mpmmask, > > - write_mpmmask > }, > > - [CSR_MPMBASE] = { "mpmbase", pointer_masking, read_mpmbase, > > - write_mpmbase > }, > > - /* Supervisor Pointer Masking */ > > - [CSR_SMTE] = { "smte", pointer_masking, read_smte, > write_smte }, > > - [CSR_SPMMASK] = { "spmmask", pointer_masking, read_spmmask, > > - write_spmmask > }, > > - [CSR_SPMBASE] = { "spmbase", pointer_masking, read_spmbase, > > - write_spmbase > }, > > - > > /* Performance Counters */ > > [CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_hpmcounter > }, > > [CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_hpmcounter > }, > > diff --git a/target/riscv/machine.c b/target/riscv/machine.c > > index fdde243e04..860fe56d43 100644 > > --- a/target/riscv/machine.c > > +++ b/target/riscv/machine.c > > @@ -164,14 +164,6 @@ static const VMStateDescription > vmstate_pointermasking = { > > .minimum_version_id = 1, > > The version_id and minimum_version_id should be bumped here > > Alistair > > > .needed = pointermasking_needed, > > .fields = (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() > > } > > }; > > @@ -267,7 +259,6 @@ static int riscv_cpu_post_load(void *opaque, int > version_id) > > CPURISCVState *env = &cpu->env; > > > > env->xl = cpu_recompute_xl(env); > > - riscv_cpu_update_mask(env); > > return 0; > > } > > > > diff --git a/target/riscv/translate.c b/target/riscv/translate.c > > index f0be79bb16..6b4b9a671c 100644 > > --- a/target/riscv/translate.c > > +++ b/target/riscv/translate.c > > @@ -42,9 +42,6 @@ static TCGv cpu_gpr[32], cpu_gprh[32], cpu_pc, cpu_vl, > cpu_vstart; > > 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; > > -static TCGv pm_base; > > > > /* > > * If an operation is being performed on less than TARGET_LONG_BITS, > > @@ -106,9 +103,6 @@ typedef struct DisasContext { > > bool vl_eq_vlmax; > > CPUState *cs; > > TCGv zero; > > - /* PointerMasking extension */ > > - bool pm_mask_enabled; > > - bool pm_base_enabled; > > /* Use icount trigger for native debug */ > > bool itrigger; > > /* FRM is known to contain a valid value. */ > > @@ -582,14 +576,9 @@ static TCGv get_address(DisasContext *ctx, int rs1, > int imm) > > TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); > > > > tcg_gen_addi_tl(addr, src1, imm); > > - if (ctx->pm_mask_enabled) { > > - tcg_gen_andc_tl(addr, addr, pm_mask); > > - } else if (get_address_xl(ctx) == MXL_RV32) { > > + if (get_address_xl(ctx) == MXL_RV32) { > > tcg_gen_ext32u_tl(addr, addr); > > } > > - if (ctx->pm_base_enabled) { > > - tcg_gen_or_tl(addr, addr, pm_base); > > - } > > > > return addr; > > } > > @@ -601,14 +590,9 @@ static TCGv get_address_indexed(DisasContext *ctx, > int rs1, TCGv offs) > > TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); > > > > tcg_gen_add_tl(addr, src1, offs); > > - if (ctx->pm_mask_enabled) { > > - tcg_gen_andc_tl(addr, addr, pm_mask); > > - } else if (get_xl(ctx) == MXL_RV32) { > > + if (get_xl(ctx) == MXL_RV32) { > > tcg_gen_ext32u_tl(addr, addr); > > } > > - if (ctx->pm_base_enabled) { > > - tcg_gen_or_tl(addr, addr, pm_base); > > - } > > return addr; > > } > > > > @@ -1192,8 +1176,6 @@ static void > riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) > > ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL); > > ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL); > > ctx->cs = cs; > > - ctx->pm_mask_enabled = FIELD_EX32(tb_flags, TB_FLAGS, > PM_MASK_ENABLED); > > - ctx->pm_base_enabled = FIELD_EX32(tb_flags, TB_FLAGS, > PM_BASE_ENABLED); > > ctx->itrigger = FIELD_EX32(tb_flags, TB_FLAGS, ITRIGGER); > > ctx->zero = tcg_constant_tl(0); > > ctx->virt_inst_excp = false; > > @@ -1325,9 +1307,4 @@ void riscv_translate_init(void) > > "load_res"); > > load_val = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, > load_val), > > "load_val"); > > - /* Assign PM CSRs to tcg globals */ > > - pm_mask = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, > cur_pmmask), > > - "pmmask"); > > - pm_base = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, > cur_pmbase), > > - "pmbase"); > > } > > diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c > > index c1c3a4d1ea..8e7a8e80a0 100644 > > --- a/target/riscv/vector_helper.c > > +++ b/target/riscv/vector_helper.c > > @@ -94,7 +94,7 @@ static inline uint32_t vext_max_elems(uint32_t desc, > uint32_t log2_esz) > > > > static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong > addr) > > { > > - return (addr & ~env->cur_pmmask) | env->cur_pmbase; > > + return addr; > > } > > > > /* > > -- > > 2.34.1 > > > > >
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 83c7c0cf07..1e6571ce99 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -710,13 +710,6 @@ 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, }; for (i = 0; i < ARRAY_SIZE(dump_csrs); ++i) { @@ -891,8 +884,6 @@ static void riscv_cpu_reset_hold(Object *obj) } i++; } - /* mmte is supposed to have pm.current hardwired to 1 */ - env->mmte |= (EXT_STATUS_INITIAL | MMTE_M_PM_CURRENT); /* * Clear mseccfg and unlock all the PMP entries upon reset. @@ -906,7 +897,6 @@ static void riscv_cpu_reset_hold(Object *obj) pmp_unlock_entries(env); #endif env->xl = riscv_cpu_mxl(env); - riscv_cpu_update_mask(env); cs->exception_index = RISCV_EXCP_NONE; env->load_res = -1; set_default_nan_mode(1, &env->fp_status); diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d74b361be6..73f7004936 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -374,18 +374,7 @@ struct CPUArchState { /* 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; - - /* CSRs for execution environment configuration */ + /* CSRs for execution enviornment configuration */ uint64_t menvcfg; uint64_t mstateen[SMSTATEEN_MAX_COUNT]; uint64_t hstateen[SMSTATEEN_MAX_COUNT]; @@ -393,8 +382,6 @@ struct CPUArchState { target_ulong senvcfg; uint64_t henvcfg; #endif - target_ulong cur_pmmask; - target_ulong cur_pmbase; /* Fields from here on are preserved across CPU reset. */ QEMUTimer *stimer; /* Internal timer for S-mode interrupt */ @@ -543,17 +530,14 @@ FIELD(TB_FLAGS, VILL, 14, 1) FIELD(TB_FLAGS, VSTART_EQ_ZERO, 15, 1) /* The combination of MXL/SXL/UXL that applies to the current cpu mode. */ FIELD(TB_FLAGS, XL, 16, 2) -/* If PointerMasking should be applied */ -FIELD(TB_FLAGS, PM_MASK_ENABLED, 18, 1) -FIELD(TB_FLAGS, PM_BASE_ENABLED, 19, 1) -FIELD(TB_FLAGS, VTA, 20, 1) -FIELD(TB_FLAGS, VMA, 21, 1) +FIELD(TB_FLAGS, VTA, 18, 1) +FIELD(TB_FLAGS, VMA, 19, 1) /* Native debug itrigger */ -FIELD(TB_FLAGS, ITRIGGER, 22, 1) +FIELD(TB_FLAGS, ITRIGGER, 20, 1) /* Virtual mode enabled */ -FIELD(TB_FLAGS, VIRT_ENABLED, 23, 1) -FIELD(TB_FLAGS, PRIV, 24, 2) -FIELD(TB_FLAGS, AXL, 26, 2) +FIELD(TB_FLAGS, VIRT_ENABLED, 21, 1) +FIELD(TB_FLAGS, PRIV, 22, 2) +FIELD(TB_FLAGS, AXL, 24, 2) #ifdef TARGET_RISCV32 #define riscv_cpu_mxl(env) ((void)(env), MXL_RV32) @@ -680,8 +664,6 @@ static inline uint32_t vext_get_vlmax(RISCVCPU *cpu, target_ulong vtype) void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, uint64_t *cs_base, uint32_t *pflags); -void riscv_cpu_update_mask(CPURISCVState *env); - RISCVException riscv_csrrw(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask); diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index ebd7917d49..1c92458a01 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -491,37 +491,6 @@ #define CSR_MHPMCOUNTER30H 0xb9e #define CSR_MHPMCOUNTER31H 0xb9f -/* - * 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 #define CSR_SCOUNTOVF 0xda0 /* Crypto Extension */ @@ -741,11 +710,6 @@ typedef enum RISCVException { #define VS_MODE_INTERRUPTS ((uint64_t)(MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)) #define HS_MODE_INTERRUPTS ((uint64_t)(MIP_SGEIP | VS_MODE_INTERRUPTS)) -/* General PointerMasking CSR bits */ -#define PM_ENABLE 0x00000001ULL -#define PM_CURRENT 0x00000002ULL -#define PM_INSN 0x00000004ULL - /* Execution environment configuration bits */ #define MENVCFG_FIOM BIT(0) #define MENVCFG_CBIE (3UL << 4) @@ -778,57 +742,6 @@ typedef enum RISCVException { #define HENVCFGH_PBMTE MENVCFGH_PBMTE #define HENVCFGH_STCE MENVCFGH_STCE -/* 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 (EXT_STATUS_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_INSN | \ - MMTE_S_PM_ENABLE | MMTE_S_PM_CURRENT | MMTE_S_PM_INSN | \ - MMTE_M_PM_ENABLE | MMTE_M_PM_CURRENT | MMTE_M_PM_INSN | \ - 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_INSN | \ - SMTE_S_PM_ENABLE | SMTE_S_PM_CURRENT | SMTE_S_PM_INSN | \ - 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_INSN) - /* MISELECT, SISELECT, and VSISELECT bits (AIA) */ #define ISELECT_IPRIO0 0x30 #define ISELECT_IPRIO15 0x3f diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index e7e23b34f4..a3d477d226 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -135,61 +135,10 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, flags = FIELD_DP32(flags, TB_FLAGS, VS, vs); flags = FIELD_DP32(flags, TB_FLAGS, XL, env->xl); flags = FIELD_DP32(flags, TB_FLAGS, AXL, cpu_address_xl(env)); - if (env->cur_pmmask != 0) { - flags = FIELD_DP32(flags, TB_FLAGS, PM_MASK_ENABLED, 1); - } - if (env->cur_pmbase != 0) { - flags = FIELD_DP32(flags, TB_FLAGS, PM_BASE_ENABLED, 1); - } *pflags = flags; } -void riscv_cpu_update_mask(CPURISCVState *env) -{ - target_ulong mask = 0, base = 0; - RISCVMXL xl = env->xl; - /* - * TODO: Current RVJ spec does not specify - * how the extension interacts with XLEN. - */ -#ifndef CONFIG_USER_ONLY - int mode = cpu_address_mode(env); - xl = cpu_get_xl(env, mode); - if (riscv_has_ext(env, RVJ)) { - switch (mode) { - case PRV_M: - if (env->mmte & M_PM_ENABLE) { - mask = env->mpmmask; - base = env->mpmbase; - } - break; - case PRV_S: - if (env->mmte & S_PM_ENABLE) { - mask = env->spmmask; - base = env->spmbase; - } - break; - case PRV_U: - if (env->mmte & U_PM_ENABLE) { - mask = env->upmmask; - base = env->upmbase; - } - break; - default: - g_assert_not_reached(); - } - } -#endif - if (xl == MXL_RV32) { - env->cur_pmmask = mask & UINT32_MAX; - env->cur_pmbase = base & UINT32_MAX; - } else { - env->cur_pmmask = mask; - env->cur_pmbase = base; - } -} - #ifndef CONFIG_USER_ONLY /* @@ -721,7 +670,6 @@ void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv) /* tlb_flush is unnecessary as mode is contained in mmu_idx */ env->priv = newpriv; env->xl = cpu_recompute_xl(env); - riscv_cpu_update_mask(env); /* * Clear the load reservation - otherwise a reservation placed in one diff --git a/target/riscv/csr.c b/target/riscv/csr.c index fde7ce1a53..ea4e1ac6ef 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -483,16 +483,6 @@ static RISCVException hgatp(CPURISCVState *env, int csrno) return hmode(env, csrno); } -/* 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 int aia_hmode(CPURISCVState *env, int csrno) { if (!riscv_cpu_cfg(env)->ext_ssaia) { @@ -1355,7 +1345,6 @@ static RISCVException write_mstatus(CPURISCVState *env, int csrno, env->xl = cpu_recompute_xl(env); } - riscv_cpu_update_mask(env); return RISCV_EXCP_NONE; } @@ -3900,302 +3889,6 @@ static RISCVException read_tinfo(CPURISCVState *env, int csrno, return RISCV_EXCP_NONE; } -/* - * 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 = get_field(csrno, 0x300); - int pm_current; - - if (env->debugger) { - return false; - } - /* - * If priv lvls differ that means we're accessing csr from higher priv lvl, - * so allow the access - */ - if (env->priv != csr_priv) { - return false; - } - switch (env->priv) { - case PRV_M: - pm_current = get_field(env->mmte, M_PM_CURRENT); - break; - case PRV_S: - pm_current = get_field(env->mmte, S_PM_CURRENT); - break; - case PRV_U: - pm_current = 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==1 */ - return !pm_current; -} - -static RISCVException read_mmte(CPURISCVState *env, int csrno, - target_ulong *val) -{ - *val = 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 = val & MMTE_MASK; - - if (val != 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 |= MMTE_M_PM_CURRENT; - - /* hardwiring pm.instruction bit to 0, since it's not supported yet */ - wpri_val &= ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN); - env->mmte = wpri_val | EXT_STATUS_DIRTY; - riscv_cpu_update_mask(env); - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->mmte & SMTE_MASK; - return RISCV_EXCP_NONE; -} - -static RISCVException write_smte(CPURISCVState *env, int csrno, - target_ulong val) -{ - target_ulong wpri_val = val & SMTE_MASK; - - if (val != 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==0 we can't modify current PM CSRs */ - if (check_pm_current_disabled(env, csrno)) { - return RISCV_EXCP_NONE; - } - - wpri_val |= (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 = env->mmte & UMTE_MASK; - return RISCV_EXCP_NONE; -} - -static RISCVException write_umte(CPURISCVState *env, int csrno, - target_ulong val) -{ - target_ulong wpri_val = val & UMTE_MASK; - - if (val != 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 |= (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 = env->mpmmask; - return RISCV_EXCP_NONE; -} - -static RISCVException write_mpmmask(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - env->mpmmask = val; - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { - env->cur_pmmask = val; - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->spmmask; - return RISCV_EXCP_NONE; -} - -static RISCVException write_spmmask(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - /* if pm.current==0 we can't modify current PM CSRs */ - if (check_pm_current_disabled(env, csrno)) { - return RISCV_EXCP_NONE; - } - env->spmmask = val; - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { - env->cur_pmmask = val; - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { - env->cur_pmmask &= UINT32_MAX; - } - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->upmmask; - return RISCV_EXCP_NONE; -} - -static RISCVException write_upmmask(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - /* if pm.current==0 we can't modify current PM CSRs */ - if (check_pm_current_disabled(env, csrno)) { - return RISCV_EXCP_NONE; - } - env->upmmask = val; - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { - env->cur_pmmask = val; - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { - env->cur_pmmask &= UINT32_MAX; - } - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->mpmbase; - return RISCV_EXCP_NONE; -} - -static RISCVException write_mpmbase(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - env->mpmbase = val; - if ((cpu_address_mode(env) == PRV_M) && (env->mmte & M_PM_ENABLE)) { - env->cur_pmbase = val; - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->spmbase; - return RISCV_EXCP_NONE; -} - -static RISCVException write_spmbase(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - /* if pm.current==0 we can't modify current PM CSRs */ - if (check_pm_current_disabled(env, csrno)) { - return RISCV_EXCP_NONE; - } - env->spmbase = val; - if ((cpu_address_mode(env) == PRV_S) && (env->mmte & S_PM_ENABLE)) { - env->cur_pmbase = val; - if (cpu_get_xl(env, PRV_S) == MXL_RV32) { - env->cur_pmbase &= UINT32_MAX; - } - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = 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 = env->upmbase; - return RISCV_EXCP_NONE; -} - -static RISCVException write_upmbase(CPURISCVState *env, int csrno, - target_ulong val) -{ - uint64_t mstatus; - - /* if pm.current==0 we can't modify current PM CSRs */ - if (check_pm_current_disabled(env, csrno)) { - return RISCV_EXCP_NONE; - } - env->upmbase = val; - if ((cpu_address_mode(env) == PRV_U) && (env->mmte & U_PM_ENABLE)) { - env->cur_pmbase = val; - if (cpu_get_xl(env, PRV_U) == MXL_RV32) { - env->cur_pmbase &= UINT32_MAX; - } - } - env->mmte |= EXT_STATUS_DIRTY; - - /* Set XS and SD bits, since PM CSRs are dirty */ - mstatus = env->mstatus | MSTATUS_XS; - write_mstatus(env, csrno, mstatus); - return RISCV_EXCP_NONE; -} - #endif /* Crypto Extension */ @@ -4800,25 +4493,6 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_TDATA3] = { "tdata3", debug, read_tdata, write_tdata }, [CSR_TINFO] = { "tinfo", debug, read_tinfo, write_ignore }, - /* User Pointer Masking */ - [CSR_UMTE] = { "umte", pointer_masking, read_umte, write_umte }, - [CSR_UPMMASK] = { "upmmask", pointer_masking, read_upmmask, - write_upmmask }, - [CSR_UPMBASE] = { "upmbase", pointer_masking, read_upmbase, - write_upmbase }, - /* Machine Pointer Masking */ - [CSR_MMTE] = { "mmte", pointer_masking, read_mmte, write_mmte }, - [CSR_MPMMASK] = { "mpmmask", pointer_masking, read_mpmmask, - write_mpmmask }, - [CSR_MPMBASE] = { "mpmbase", pointer_masking, read_mpmbase, - write_mpmbase }, - /* Supervisor Pointer Masking */ - [CSR_SMTE] = { "smte", pointer_masking, read_smte, write_smte }, - [CSR_SPMMASK] = { "spmmask", pointer_masking, read_spmmask, - write_spmmask }, - [CSR_SPMBASE] = { "spmbase", pointer_masking, read_spmbase, - write_spmbase }, - /* Performance Counters */ [CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_hpmcounter }, [CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_hpmcounter }, diff --git a/target/riscv/machine.c b/target/riscv/machine.c index fdde243e04..860fe56d43 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -164,14 +164,6 @@ static const VMStateDescription vmstate_pointermasking = { .minimum_version_id = 1, .needed = pointermasking_needed, .fields = (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() } }; @@ -267,7 +259,6 @@ static int riscv_cpu_post_load(void *opaque, int version_id) CPURISCVState *env = &cpu->env; env->xl = cpu_recompute_xl(env); - riscv_cpu_update_mask(env); return 0; } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index f0be79bb16..6b4b9a671c 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -42,9 +42,6 @@ static TCGv cpu_gpr[32], cpu_gprh[32], cpu_pc, cpu_vl, cpu_vstart; 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; -static TCGv pm_base; /* * If an operation is being performed on less than TARGET_LONG_BITS, @@ -106,9 +103,6 @@ typedef struct DisasContext { bool vl_eq_vlmax; CPUState *cs; TCGv zero; - /* PointerMasking extension */ - bool pm_mask_enabled; - bool pm_base_enabled; /* Use icount trigger for native debug */ bool itrigger; /* FRM is known to contain a valid value. */ @@ -582,14 +576,9 @@ static TCGv get_address(DisasContext *ctx, int rs1, int imm) TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); tcg_gen_addi_tl(addr, src1, imm); - if (ctx->pm_mask_enabled) { - tcg_gen_andc_tl(addr, addr, pm_mask); - } else if (get_address_xl(ctx) == MXL_RV32) { + if (get_address_xl(ctx) == MXL_RV32) { tcg_gen_ext32u_tl(addr, addr); } - if (ctx->pm_base_enabled) { - tcg_gen_or_tl(addr, addr, pm_base); - } return addr; } @@ -601,14 +590,9 @@ static TCGv get_address_indexed(DisasContext *ctx, int rs1, TCGv offs) TCGv src1 = get_gpr(ctx, rs1, EXT_NONE); tcg_gen_add_tl(addr, src1, offs); - if (ctx->pm_mask_enabled) { - tcg_gen_andc_tl(addr, addr, pm_mask); - } else if (get_xl(ctx) == MXL_RV32) { + if (get_xl(ctx) == MXL_RV32) { tcg_gen_ext32u_tl(addr, addr); } - if (ctx->pm_base_enabled) { - tcg_gen_or_tl(addr, addr, pm_base); - } return addr; } @@ -1192,8 +1176,6 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->xl = FIELD_EX32(tb_flags, TB_FLAGS, XL); ctx->address_xl = FIELD_EX32(tb_flags, TB_FLAGS, AXL); ctx->cs = cs; - ctx->pm_mask_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_MASK_ENABLED); - ctx->pm_base_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_BASE_ENABLED); ctx->itrigger = FIELD_EX32(tb_flags, TB_FLAGS, ITRIGGER); ctx->zero = tcg_constant_tl(0); ctx->virt_inst_excp = false; @@ -1325,9 +1307,4 @@ void riscv_translate_init(void) "load_res"); load_val = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, load_val), "load_val"); - /* Assign PM CSRs to tcg globals */ - pm_mask = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, cur_pmmask), - "pmmask"); - pm_base = tcg_global_mem_new(tcg_env, offsetof(CPURISCVState, cur_pmbase), - "pmbase"); } diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index c1c3a4d1ea..8e7a8e80a0 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -94,7 +94,7 @@ static inline uint32_t vext_max_elems(uint32_t desc, uint32_t log2_esz) static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong addr) { - return (addr & ~env->cur_pmmask) | env->cur_pmbase; + return addr; } /*