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target/loongarch: Implement vfrstp

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This patch includes:
- VFRSTP[I].{B/H}.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-33-gaosong@loongson.cn>
This commit is contained in:
Song Gao 2023-05-04 20:27:58 +08:00
parent 0b1e67051d
commit ac95a0b975
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GPG key ID: 40A2FFF239263EDF
5 changed files with 61 additions and 0 deletions
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41
target/loongarch/lsx_helper.c
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@ -2019,3 +2019,44 @@ DO_BITI(vbitrevi_b, 8, UB, DO_BITREV)
DO_BITI(vbitrevi_h, 16, UH, DO_BITREV)
DO_BITI(vbitrevi_w, 32, UW, DO_BITREV)
DO_BITI(vbitrevi_d, 64, UD, DO_BITREV)
#define VFRSTP(NAME, BIT, MASK, E) \
void HELPER(NAME)(CPULoongArchState *env, \
uint32_t vd, uint32_t vj, uint32_t vk) \
{ \
int i, m; \
VReg *Vd = &(env->fpr[vd].vreg); \
VReg *Vj = &(env->fpr[vj].vreg); \
VReg *Vk = &(env->fpr[vk].vreg); \
\
for (i = 0; i < LSX_LEN/BIT; i++) { \
if (Vj->E(i) < 0) { \
break; \
} \
} \
m = Vk->E(0) & MASK; \
Vd->E(m) = i; \
}
VFRSTP(vfrstp_b, 8, 0xf, B)
VFRSTP(vfrstp_h, 16, 0x7, H)
#define VFRSTPI(NAME, BIT, E) \
void HELPER(NAME)(CPULoongArchState *env, \
uint32_t vd, uint32_t vj, uint32_t imm) \
{ \
int i, m; \
VReg *Vd = &(env->fpr[vd].vreg); \
VReg *Vj = &(env->fpr[vj].vreg); \
\
for (i = 0; i < LSX_LEN/BIT; i++) { \
if (Vj->E(i) < 0) { \
break; \
} \
} \
m = imm % (LSX_LEN/BIT); \
Vd->E(m) = i; \
}
VFRSTPI(vfrstpi_b, 8, B)
VFRSTPI(vfrstpi_h, 16, H)