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target/riscv: rvv-1.0: add evl parameter to vext_ldst_us()

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Add supports of Vector unit-stride mask load/store instructions
(vlm.v, vsm.v), which has:
    evl (effective vector length) = ceil(env->vl / 8).

The new instructions operate the same as unmasked byte loads and stores.
Add evl parameter to reuse vext_ldst_us().

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211210075704.23951-74-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Frank Chang 2021-12-10 15:56:59 +08:00 committed by Alistair Francis
parent 34a2c2d81a
commit 5c89e9c096
1 changed files with 18 additions and 18 deletions
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36
target/riscv/vector_helper.c
View file

@ -279,15 +279,15 @@ GEN_VEXT_ST_STRIDE(vsse64_v, int64_t, ste_d)
/* unmasked unit-stride load and store operation*/
static void
vext_ldst_us(void *vd, target_ulong base, CPURISCVState *env, uint32_t desc,
vext_ldst_elem_fn *ldst_elem,
uint32_t esz, uintptr_t ra, MMUAccessType access_type)
vext_ldst_elem_fn *ldst_elem, uint32_t esz, uint32_t evl,
uintptr_t ra, MMUAccessType access_type)
{
uint32_t i, k;
uint32_t nf = vext_nf(desc);
uint32_t max_elems = vext_max_elems(desc, esz);
/* load bytes from guest memory */
for (i = env->vstart; i < env->vl; i++, env->vstart++) {
for (i = env->vstart; i < evl; i++, env->vstart++) {
k = 0;
while (k < nf) {
target_ulong addr = base + ((i * nf + k) << esz);
@ -316,7 +316,7 @@ void HELPER(NAME)(void *vd, void *v0, target_ulong base, \
CPURISCVState *env, uint32_t desc) \
{ \
vext_ldst_us(vd, base, env, desc, LOAD_FN, \
ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_LOAD); \
ctzl(sizeof(ETYPE)), env->vl, GETPC(), MMU_DATA_LOAD); \
}
GEN_VEXT_LD_US(vle8_v, int8_t, lde_b)
@ -324,20 +324,20 @@ GEN_VEXT_LD_US(vle16_v, int16_t, lde_h)
GEN_VEXT_LD_US(vle32_v, int32_t, lde_w)
GEN_VEXT_LD_US(vle64_v, int64_t, lde_d)
#define GEN_VEXT_ST_US(NAME, ETYPE, STORE_FN) \
void HELPER(NAME##_mask)(void *vd, void *v0, target_ulong base, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t stride = vext_nf(desc) << ctzl(sizeof(ETYPE)); \
vext_ldst_stride(vd, v0, base, stride, env, desc, false, STORE_FN, \
ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE); \
} \
\
void HELPER(NAME)(void *vd, void *v0, target_ulong base, \
CPURISCVState *env, uint32_t desc) \
{ \
vext_ldst_us(vd, base, env, desc, STORE_FN, \
ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE); \
#define GEN_VEXT_ST_US(NAME, ETYPE, STORE_FN) \
void HELPER(NAME##_mask)(void *vd, void *v0, target_ulong base, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t stride = vext_nf(desc) << ctzl(sizeof(ETYPE)); \
vext_ldst_stride(vd, v0, base, stride, env, desc, false, STORE_FN, \
ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE); \
} \
\
void HELPER(NAME)(void *vd, void *v0, target_ulong base, \
CPURISCVState *env, uint32_t desc) \
{ \
vext_ldst_us(vd, base, env, desc, STORE_FN, \
ctzl(sizeof(ETYPE)), env->vl, GETPC(), MMU_DATA_STORE); \
}
GEN_VEXT_ST_US(vse8_v, int8_t, ste_b)