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[PATCH v2 10/14] target/riscv: Adjust vector address with mask
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From: |
LIU Zhiwei |
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Subject: |
[PATCH v2 10/14] target/riscv: Adjust vector address with mask |
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Date: |
Wed, 10 Nov 2021 15:04:48 +0800 |
The mask comes from the pointer masking extension, or the max value
corresponding to XLEN bits.
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
---
target/riscv/cpu.c | 1 +
target/riscv/cpu.h | 4 ++++
target/riscv/cpu_helper.c | 40 ++++++++++++++++++++++++++++++++++++
target/riscv/csr.c | 19 +++++++++++++++++
target/riscv/machine.c | 10 +++++++++
target/riscv/vector_helper.c | 23 +++++++++++++--------
6 files changed, 88 insertions(+), 9 deletions(-)
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 0d2d175fa2..886388f066 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -378,6 +378,7 @@ static void riscv_cpu_reset(DeviceState *dev)
#ifndef CONFIG_USER_ONLY
env->misa_mxl = env->misa_mxl_max;
env->priv = PRV_M;
+ riscv_cpu_update_mask(env);
env->mstatus &= ~(MSTATUS_MIE | MSTATUS_MPRV);
if (env->misa_mxl > MXL_RV32) {
/*
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 11590a510e..73d7aa9ad7 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -252,6 +252,8 @@ struct CPURISCVState {
target_ulong upmmask;
target_ulong upmbase;
#endif
+ target_ulong mask;
+ target_ulong base;
float_status fp_status;
@@ -443,6 +445,8 @@ static inline uint32_t vext_get_vlmax(RISCVCPU *cpu,
target_ulong vtype)
void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc,
target_ulong *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_helper.c b/target/riscv/cpu_helper.c
index 79aba9c880..d1ecdea392 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -133,6 +133,46 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong
*pc,
*pflags = flags;
}
+void riscv_cpu_update_mask(CPURISCVState *env)
+{
+ target_ulong mask = -1, base = 0;
+#ifndef CONFIG_USER_ONLY
+ if (riscv_has_ext(env, RVJ)) {
+ switch (env->priv) {
+ 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 (cpu_get_xl(env) == MXL_RV32) {
+ env->mask = mask & UINT32_MAX;
+ env->base = base & UINT32_MAX;
+ } else {
+ env->mask = mask;
+ env->base = base;
+ }
+}
+
+
+
#ifndef CONFIG_USER_ONLY
static int riscv_cpu_local_irq_pending(CPURISCVState *env)
{
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 74c0b788fd..59e368f004 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -1496,6 +1496,7 @@ static RISCVException write_mmte(CPURISCVState *env, int
csrno,
/* 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 | PM_EXT_DIRTY;
+ riscv_cpu_update_mask(env);
/* Set XS and SD bits, since PM CSRs are dirty */
mstatus = env->mstatus | MSTATUS_XS;
@@ -1571,6 +1572,9 @@ static RISCVException write_mpmmask(CPURISCVState *env,
int csrno,
uint64_t mstatus;
env->mpmmask = val;
+ if ((env->priv == PRV_M) && (env->mmte & M_PM_ENABLE)) {
+ env->mask = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
@@ -1596,6 +1600,9 @@ static RISCVException write_spmmask(CPURISCVState *env,
int csrno,
return RISCV_EXCP_NONE;
}
env->spmmask = val;
+ if ((env->priv == PRV_S) && (env->mmte & S_PM_ENABLE)) {
+ env->mask = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
@@ -1621,6 +1628,9 @@ static RISCVException write_upmmask(CPURISCVState *env,
int csrno,
return RISCV_EXCP_NONE;
}
env->upmmask = val;
+ if ((env->priv == PRV_U) && (env->mmte & U_PM_ENABLE)) {
+ env->mask = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
@@ -1642,6 +1652,9 @@ static RISCVException write_mpmbase(CPURISCVState *env,
int csrno,
uint64_t mstatus;
env->mpmbase = val;
+ if ((env->priv == PRV_M) && (env->mmte & M_PM_ENABLE)) {
+ env->base = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
@@ -1667,6 +1680,9 @@ static RISCVException write_spmbase(CPURISCVState *env,
int csrno,
return RISCV_EXCP_NONE;
}
env->spmbase = val;
+ if ((env->priv == PRV_S) && (env->mmte & S_PM_ENABLE)) {
+ env->base = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
@@ -1692,6 +1708,9 @@ static RISCVException write_upmbase(CPURISCVState *env,
int csrno,
return RISCV_EXCP_NONE;
}
env->upmbase = val;
+ if ((env->priv == PRV_U) && (env->mmte & U_PM_ENABLE)) {
+ env->base = val;
+ }
env->mmte |= PM_EXT_DIRTY;
/* Set XS and SD bits, since PM CSRs are dirty */
diff --git a/target/riscv/machine.c b/target/riscv/machine.c
index 7b4c739564..19e982d3f0 100644
--- a/target/riscv/machine.c
+++ b/target/riscv/machine.c
@@ -164,10 +164,20 @@ static const VMStateDescription vmstate_hyper = {
}
};
+static int riscv_cpu_post_load(void *opaque, int version_id)
+{
+ RISCVCPU *cpu = opaque;
+ CPURISCVState *env = &cpu->env;
+
+ riscv_cpu_update_mask(env);
+ return 0;
+}
+
const VMStateDescription vmstate_riscv_cpu = {
.name = "cpu",
.version_id = 3,
.minimum_version_id = 3,
+ .post_load = riscv_cpu_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINTTL_ARRAY(env.gpr, RISCVCPU, 32),
VMSTATE_UINT64_ARRAY(env.fpr, RISCVCPU, 32),
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 60006b1b1b..0b297f6bc8 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -123,6 +123,11 @@ static inline uint32_t vext_maxsz(uint32_t desc)
return simd_maxsz(desc) << vext_lmul(desc);
}
+static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong addr)
+{
+ return (addr & env->mask) | env->base;
+}
+
/*
* This function checks watchpoint before real load operation.
*
@@ -140,12 +145,12 @@ static void probe_pages(CPURISCVState *env, target_ulong
addr,
target_ulong pagelen = -(addr | TARGET_PAGE_MASK);
target_ulong curlen = MIN(pagelen, len);
- probe_access(env, addr, curlen, access_type,
+ probe_access(env, adjust_addr(env, addr), curlen, access_type,
cpu_mmu_index(env, false), ra);
if (len > curlen) {
addr += curlen;
curlen = len - curlen;
- probe_access(env, addr, curlen, access_type,
+ probe_access(env, adjust_addr(env, addr), curlen, access_type,
cpu_mmu_index(env, false), ra);
}
}
@@ -306,7 +311,7 @@ vext_ldst_stride(void *vd, void *v0, target_ulong base,
}
while (k < nf) {
target_ulong addr = base + stride * i + k * msz;
- ldst_elem(env, addr, i + k * vlmax, vd, ra);
+ ldst_elem(env, adjust_addr(env, addr), i + k * vlmax, vd, ra);
k++;
}
}
@@ -399,7 +404,7 @@ vext_ldst_us(void *vd, target_ulong base, CPURISCVState
*env, uint32_t desc,
k = 0;
while (k < nf) {
target_ulong addr = base + (i * nf + k) * msz;
- ldst_elem(env, addr, i + k * vlmax, vd, ra);
+ ldst_elem(env, adjust_addr(env, addr), i + k * vlmax, vd, ra);
k++;
}
}
@@ -536,7 +541,7 @@ vext_ldst_index(void *vd, void *v0, target_ulong base,
}
while (k < nf) {
abi_ptr addr = get_index_addr(base, i, vs2) + k * msz;
- ldst_elem(env, addr, i + k * vlmax, vd, ra);
+ ldst_elem(env, adjust_addr(env, addr), i + k * vlmax, vd, ra);
k++;
}
}
@@ -626,7 +631,7 @@ vext_ldff(void *vd, void *v0, target_ulong base,
if (!vm && !vext_elem_mask(v0, mlen, i)) {
continue;
}
- addr = base + nf * i * msz;
+ addr = adjust_addr(env, base + nf * i * msz);
if (i == 0) {
probe_pages(env, addr, nf * msz, ra, MMU_DATA_LOAD);
} else {
@@ -653,7 +658,7 @@ vext_ldff(void *vd, void *v0, target_ulong base,
break;
}
remain -= offset;
- addr += offset;
+ addr = adjust_addr(env, addr + offset);
}
}
}
@@ -669,7 +674,7 @@ ProbeSuccess:
}
while (k < nf) {
target_ulong addr = base + (i * nf + k) * msz;
- ldst_elem(env, addr, i + k * vlmax, vd, ra);
+ ldst_elem(env, adjust_addr(env, addr), i + k * vlmax, vd, ra);
k++;
}
}
@@ -808,7 +813,7 @@ vext_amo_noatomic(void *vs3, void *v0, target_ulong base,
continue;
}
addr = get_index_addr(base, i, vs2);
- noatomic_op(vs3, addr, wd, i, env, ra);
+ noatomic_op(vs3, adjust_addr(env, addr), wd, i, env, ra);
}
clear_elem(vs3, env->vl, env->vl * esz, vlmax * esz);
}
--
2.25.1
- Re: [PATCH v2 05/14] target/riscv: Calculate address according to XLEN, (continued)
[PATCH v2 06/14] target/riscv: Adjust vsetvl according to XLEN, LIU Zhiwei, 2021/11/10
[PATCH v2 07/14] target/riscv: Ajdust vector atomic check with XLEN, LIU Zhiwei, 2021/11/10
[PATCH v2 08/14] target/riscv: Fix check range for first fault only, LIU Zhiwei, 2021/11/10
[PATCH v2 09/14] target/riscv: Relax debug check for pm write, LIU Zhiwei, 2021/11/10
[PATCH v2 10/14] target/riscv: Adjust vector address with mask,
LIU Zhiwei <=
[PATCH v2 11/14] target/riscv: Adjust scalar reg in vector with XLEN, LIU Zhiwei, 2021/11/10
[PATCH v2 12/14] target/riscv: Split out the vill from vtype, LIU Zhiwei, 2021/11/10
[PATCH v2 13/14] target/riscv: Don't save pc when exception return, LIU Zhiwei, 2021/11/10