Revision 96b4cf38 tcg/i386/tcg-target.c
| b/tcg/i386/tcg-target.c | ||
|---|---|---|
| 156 | 156 |
return 0; |
| 157 | 157 |
} |
| 158 | 158 |
|
| 159 |
#define P_EXT 0x100 /* 0x0f opcode prefix */ |
|
| 159 |
#define P_EXT 0x100 /* 0x0f opcode prefix */ |
|
| 160 |
#define P_DATA16 0x200 /* 0x66 opcode prefix */ |
|
| 160 | 161 |
|
| 161 | 162 |
#define OPC_ARITH_EvIz (0x81) |
| 162 | 163 |
#define OPC_ARITH_EvIb (0x83) |
| ... | ... | |
| 262 | 263 |
|
| 263 | 264 |
static inline void tcg_out_opc(TCGContext *s, int opc) |
| 264 | 265 |
{
|
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if (opc & P_EXT) |
|
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if (opc & P_DATA16) {
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tcg_out8(s, 0x66); |
|
| 268 |
} |
|
| 269 |
if (opc & P_EXT) {
|
|
| 266 | 270 |
tcg_out8(s, 0x0f); |
| 271 |
} |
|
| 267 | 272 |
tcg_out8(s, opc); |
| 268 | 273 |
} |
| 269 | 274 |
|
| ... | ... | |
| 396 | 401 |
|
| 397 | 402 |
static void tcg_out_shifti(TCGContext *s, int subopc, int reg, int count) |
| 398 | 403 |
{
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| 404 |
/* Propagate an opcode prefix, such as P_DATA16. */ |
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int ext = subopc & ~0x7; |
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subopc &= 0x7; |
|
| 407 |
|
|
| 399 | 408 |
if (count == 1) {
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| 400 |
tcg_out_modrm(s, OPC_SHIFT_1, subopc, reg); |
|
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tcg_out_modrm(s, OPC_SHIFT_1 | ext, subopc, reg);
|
|
| 401 | 410 |
} else {
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tcg_out_modrm(s, OPC_SHIFT_Ib, subopc, reg); |
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tcg_out_modrm(s, OPC_SHIFT_Ib | ext, subopc, reg);
|
|
| 403 | 412 |
tcg_out8(s, count); |
| 404 | 413 |
} |
| 405 | 414 |
} |
| ... | ... | |
| 411 | 420 |
|
| 412 | 421 |
static inline void tcg_out_rolw_8(TCGContext *s, int reg) |
| 413 | 422 |
{
|
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tcg_out8(s, 0x66); |
|
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tcg_out_shifti(s, SHIFT_ROL, reg, 8); |
|
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tcg_out_shifti(s, SHIFT_ROL | P_DATA16, reg, 8); |
|
| 416 | 424 |
} |
| 417 | 425 |
|
| 418 | 426 |
static inline void tcg_out_ext8u(TCGContext *s, int dest, int src) |
| ... | ... | |
| 1053 | 1061 |
data_reg = r1; |
| 1054 | 1062 |
} |
| 1055 | 1063 |
/* movw */ |
| 1056 |
tcg_out8(s, 0x66);
|
|
| 1057 |
tcg_out_modrm_offset(s, OPC_MOVL_EvGv, data_reg, r0, GUEST_BASE);
|
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tcg_out_modrm_offset(s, OPC_MOVL_EvGv | P_DATA16,
|
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data_reg, r0, GUEST_BASE);
|
|
| 1058 | 1066 |
break; |
| 1059 | 1067 |
case 2: |
| 1060 | 1068 |
if (bswap) {
|
| ... | ... | |
| 1159 | 1167 |
break; |
| 1160 | 1168 |
case INDEX_op_st16_i32: |
| 1161 | 1169 |
/* movw */ |
| 1162 |
tcg_out8(s, 0x66);
|
|
| 1163 |
tcg_out_modrm_offset(s, OPC_MOVL_EvGv, args[0], args[1], args[2]);
|
|
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tcg_out_modrm_offset(s, OPC_MOVL_EvGv | P_DATA16,
|
|
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args[0], args[1], args[2]);
|
|
| 1164 | 1172 |
break; |
| 1165 | 1173 |
case INDEX_op_st_i32: |
| 1166 | 1174 |
tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
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