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target/riscv: vector integer add-with-carry / subtract-with-borrow instructions

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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200701152549.1218-13-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:25:00 +08:00 • committed by Alistair Francis
parent 8fcdf77630
commit 3a6f8f68ad
4 changed files with 294 additions and 0 deletions
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137
target/riscv/vector_helper.c
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@ -187,6 +187,14 @@ static void clearq(void *vd, uint32_t idx, uint32_t cnt, uint32_t tot)
vext_clear(cur, cnt, tot);
}
static inline void vext_set_elem_mask(void *v0, int mlen, int index,
uint8_t value)
{
int idx = (index * mlen) / 64;
int pos = (index * mlen) % 64;
uint64_t old = ((uint64_t *)v0)[idx];
((uint64_t *)v0)[idx] = deposit64(old, pos, mlen, value);
}
static inline int vext_elem_mask(void *v0, int mlen, int index)
{
@ -1128,3 +1136,132 @@ GEN_VEXT_VX(vwadd_wx_w, 4, 8, clearq)
GEN_VEXT_VX(vwsub_wx_b, 1, 2, clearh)
GEN_VEXT_VX(vwsub_wx_h, 2, 4, clearl)
GEN_VEXT_VX(vwsub_wx_w, 4, 8, clearq)
/* Vector Integer Add-with-Carry / Subtract-with-Borrow Instructions */
#define DO_VADC(N, M, C) (N + M + C)
#define DO_VSBC(N, M, C) (N - M - C)
#define GEN_VEXT_VADC_VVM(NAME, ETYPE, H, DO_OP, CLEAR_FN) \
void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vl = env->vl; \
uint32_t esz = sizeof(ETYPE); \
uint32_t vlmax = vext_maxsz(desc) / esz; \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
ETYPE s1 = *((ETYPE *)vs1 + H(i)); \
ETYPE s2 = *((ETYPE *)vs2 + H(i)); \
uint8_t carry = vext_elem_mask(v0, mlen, i); \
\
*((ETYPE *)vd + H(i)) = DO_OP(s2, s1, carry); \
} \
CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \
}
GEN_VEXT_VADC_VVM(vadc_vvm_b, uint8_t, H1, DO_VADC, clearb)
GEN_VEXT_VADC_VVM(vadc_vvm_h, uint16_t, H2, DO_VADC, clearh)
GEN_VEXT_VADC_VVM(vadc_vvm_w, uint32_t, H4, DO_VADC, clearl)
GEN_VEXT_VADC_VVM(vadc_vvm_d, uint64_t, H8, DO_VADC, clearq)
GEN_VEXT_VADC_VVM(vsbc_vvm_b, uint8_t, H1, DO_VSBC, clearb)
GEN_VEXT_VADC_VVM(vsbc_vvm_h, uint16_t, H2, DO_VSBC, clearh)
GEN_VEXT_VADC_VVM(vsbc_vvm_w, uint32_t, H4, DO_VSBC, clearl)
GEN_VEXT_VADC_VVM(vsbc_vvm_d, uint64_t, H8, DO_VSBC, clearq)
#define GEN_VEXT_VADC_VXM(NAME, ETYPE, H, DO_OP, CLEAR_FN) \
void HELPER(NAME)(void *vd, void *v0, target_ulong s1, void *vs2, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vl = env->vl; \
uint32_t esz = sizeof(ETYPE); \
uint32_t vlmax = vext_maxsz(desc) / esz; \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
ETYPE s2 = *((ETYPE *)vs2 + H(i)); \
uint8_t carry = vext_elem_mask(v0, mlen, i); \
\
*((ETYPE *)vd + H(i)) = DO_OP(s2, (ETYPE)(target_long)s1, carry);\
} \
CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \
}
GEN_VEXT_VADC_VXM(vadc_vxm_b, uint8_t, H1, DO_VADC, clearb)
GEN_VEXT_VADC_VXM(vadc_vxm_h, uint16_t, H2, DO_VADC, clearh)
GEN_VEXT_VADC_VXM(vadc_vxm_w, uint32_t, H4, DO_VADC, clearl)
GEN_VEXT_VADC_VXM(vadc_vxm_d, uint64_t, H8, DO_VADC, clearq)
GEN_VEXT_VADC_VXM(vsbc_vxm_b, uint8_t, H1, DO_VSBC, clearb)
GEN_VEXT_VADC_VXM(vsbc_vxm_h, uint16_t, H2, DO_VSBC, clearh)
GEN_VEXT_VADC_VXM(vsbc_vxm_w, uint32_t, H4, DO_VSBC, clearl)
GEN_VEXT_VADC_VXM(vsbc_vxm_d, uint64_t, H8, DO_VSBC, clearq)
#define DO_MADC(N, M, C) (C ? (__typeof(N))(N + M + 1) <= N : \
(__typeof(N))(N + M) < N)
#define DO_MSBC(N, M, C) (C ? N <= M : N < M)
#define GEN_VEXT_VMADC_VVM(NAME, ETYPE, H, DO_OP) \
void HELPER(NAME)(void *vd, void *v0, void *vs1, void *vs2, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vl = env->vl; \
uint32_t vlmax = vext_maxsz(desc) / sizeof(ETYPE); \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
ETYPE s1 = *((ETYPE *)vs1 + H(i)); \
ETYPE s2 = *((ETYPE *)vs2 + H(i)); \
uint8_t carry = vext_elem_mask(v0, mlen, i); \
\
vext_set_elem_mask(vd, mlen, i, DO_OP(s2, s1, carry));\
} \
for (; i < vlmax; i++) { \
vext_set_elem_mask(vd, mlen, i, 0); \
} \
}
GEN_VEXT_VMADC_VVM(vmadc_vvm_b, uint8_t, H1, DO_MADC)
GEN_VEXT_VMADC_VVM(vmadc_vvm_h, uint16_t, H2, DO_MADC)
GEN_VEXT_VMADC_VVM(vmadc_vvm_w, uint32_t, H4, DO_MADC)
GEN_VEXT_VMADC_VVM(vmadc_vvm_d, uint64_t, H8, DO_MADC)
GEN_VEXT_VMADC_VVM(vmsbc_vvm_b, uint8_t, H1, DO_MSBC)
GEN_VEXT_VMADC_VVM(vmsbc_vvm_h, uint16_t, H2, DO_MSBC)
GEN_VEXT_VMADC_VVM(vmsbc_vvm_w, uint32_t, H4, DO_MSBC)
GEN_VEXT_VMADC_VVM(vmsbc_vvm_d, uint64_t, H8, DO_MSBC)
#define GEN_VEXT_VMADC_VXM(NAME, ETYPE, H, DO_OP) \
void HELPER(NAME)(void *vd, void *v0, target_ulong s1, \
void *vs2, CPURISCVState *env, uint32_t desc) \
{ \
uint32_t mlen = vext_mlen(desc); \
uint32_t vl = env->vl; \
uint32_t vlmax = vext_maxsz(desc) / sizeof(ETYPE); \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
ETYPE s2 = *((ETYPE *)vs2 + H(i)); \
uint8_t carry = vext_elem_mask(v0, mlen, i); \
\
vext_set_elem_mask(vd, mlen, i, \
DO_OP(s2, (ETYPE)(target_long)s1, carry)); \
} \
for (; i < vlmax; i++) { \
vext_set_elem_mask(vd, mlen, i, 0); \
} \
}
GEN_VEXT_VMADC_VXM(vmadc_vxm_b, uint8_t, H1, DO_MADC)
GEN_VEXT_VMADC_VXM(vmadc_vxm_h, uint16_t, H2, DO_MADC)
GEN_VEXT_VMADC_VXM(vmadc_vxm_w, uint32_t, H4, DO_MADC)
GEN_VEXT_VMADC_VXM(vmadc_vxm_d, uint64_t, H8, DO_MADC)
GEN_VEXT_VMADC_VXM(vmsbc_vxm_b, uint8_t, H1, DO_MSBC)
GEN_VEXT_VMADC_VXM(vmsbc_vxm_h, uint16_t, H2, DO_MSBC)
GEN_VEXT_VMADC_VXM(vmsbc_vxm_w, uint32_t, H4, DO_MSBC)
GEN_VEXT_VMADC_VXM(vmsbc_vxm_d, uint64_t, H8, DO_MSBC)