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 | 82 ---------
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(+), 530 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..3f9415d68d 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 */
@@ -778,57 +747,6 @@ 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;
}
/*
--
2.34.1On Sat, Dec 16, 2023 at 11:52 PM 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 | 82 ---------
> 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(+), 530 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..3f9415d68d 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 */
> @@ -778,57 +747,6 @@ 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,
We want to bump the version_id and minimum_version_id
Alistair
Hi Alistair,
Thanks for the lightning fast reply!
Could you please tell who should bump those numbers and to what values?
Do you think I could submit this patch series for the review?
Thanks
пн, 18 дек. 2023 г. в 06:11, Alistair Francis <alistair23@gmail.com>:
> On Sat, Dec 16, 2023 at 11:52 PM 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 | 82 ---------
> > 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(+), 530 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..3f9415d68d 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 */
> > @@ -778,57 +747,6 @@ 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,
>
> We want to bump the version_id and minimum_version_id
>
> Alistair
>
On Tue, Dec 19, 2023 at 2:54 AM Alexey Baturo <baturo.alexey@gmail.com> wrote:
>
> Hi Alistair,
>
> Thanks for the lightning fast reply!
> Could you please tell who should bump those numbers and to what values?
Just increment them by 1
> Do you think I could submit this patch series for the review?
Yes, I think so
Alistair
>
> Thanks
>
> пн, 18 дек. 2023 г. в 06:11, Alistair Francis <alistair23@gmail.com>:
>>
>> On Sat, Dec 16, 2023 at 11:52 PM 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 | 82 ---------
>> > 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(+), 530 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..3f9415d68d 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 */
>> > @@ -778,57 +747,6 @@ 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,
>>
>> We want to bump the version_id and minimum_version_id
>>
>> Alistair
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