diff options
| author | Jin Kyu Song <jin.kyu.song@intel.com> | 2013-08-30 18:10:35 -0700 |
|---|---|---|
| committer | Cyrill Gorcunov <gorcunov@gmail.com> | 2013-09-07 11:50:11 +0400 |
| commit | c47ef9490bb9855b1d04931b696510a1cb042cad (patch) | |
| tree | 483c99706c345d006ec5161e73dab62766121507 | |
| parent | 088827bc6c8590108e5d752fd1f968d128b5586e (diff) | |
| download | nasm-c47ef9490bb9855b1d04931b696510a1cb042cad.tar.gz | |
AVX-512: Fix rounding mode value in EVEX prefix with SAE
If SAE is set, VL(vector length) is implied to be 512.
EVEX.L'L (=EVEX.RC) is set to 00b by default.
Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
| -rw-r--r-- | assemble.c | 15 | ||||
| -rw-r--r-- | nasm.h | 3 |
2 files changed, 11 insertions, 7 deletions
@@ -1167,15 +1167,18 @@ static int64_t calcsize(int32_t segment, int64_t offset, int bits, op_er_sae = (ins->evex_brerop >= 0 ? &ins->oprs[ins->evex_brerop] : NULL); - if (op_er_sae && (op_er_sae->decoflags & ER)) { - /* set EVEX.RC (rounding control) and b */ - ins->evex_p[2] |= (((ins->evex_rm - BRC_RN) << 5) & EVEX_P2LL) | - EVEX_P2B; + if (op_er_sae && (op_er_sae->decoflags & (ER | SAE))) { + /* set EVEX.b */ + ins->evex_p[2] |= EVEX_P2B; + if (op_er_sae->decoflags & ER) { + /* set EVEX.RC (rounding control) */ + ins->evex_p[2] |= ((ins->evex_rm - BRC_RN) << 5) + & EVEX_P2RC; + } } else { /* set EVEX.L'L (vector length) */ ins->evex_p[2] |= ((ins->vex_wlp << (5 - 2)) & EVEX_P2LL); - if ((op_er_sae && (op_er_sae->decoflags & SAE)) || - (opy->decoflags & BRDCAST_MASK)) { + if (opy->decoflags & BRDCAST_MASK) { /* set EVEX.b */ ins->evex_p[2] |= EVEX_P2B; } @@ -514,7 +514,8 @@ static inline uint8_t get_cond_opcode(enum ccode c) #define EVEX_P2AAA 0x07 /* EVEX P[18:16] : Embedded opmask */ #define EVEX_P2VP 0x08 /* EVEX P[19] : High-16 NDS reg */ #define EVEX_P2B 0x10 /* EVEX P[20] : Broadcast / RC / SAE */ -#define EVEX_P2LL 0x60 /* EVEX P[22:21] : Vector length / RC */ +#define EVEX_P2LL 0x60 /* EVEX P[22:21] : Vector length */ +#define EVEX_P2RC EVEX_P2LL /* EVEX P[22:21] : Rounding control */ #define EVEX_P2Z 0x80 /* EVEX P[23] : Zeroing/Merging */ /* |