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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X64 | 7 #if V8_TARGET_ARCH_X64 |
8 | 8 |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/macro-assembler.h" | 10 #include "src/macro-assembler.h" |
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1376 src->link_to(pc_offset() - sizeof(int32_t)); | 1376 src->link_to(pc_offset() - sizeof(int32_t)); |
1377 } else { | 1377 } else { |
1378 DCHECK(src->is_unused()); | 1378 DCHECK(src->is_unused()); |
1379 int32_t current = pc_offset(); | 1379 int32_t current = pc_offset(); |
1380 emitl(current); | 1380 emitl(current); |
1381 src->link_to(current); | 1381 src->link_to(current); |
1382 } | 1382 } |
1383 } | 1383 } |
1384 | 1384 |
1385 | 1385 |
| 1386 void Assembler::movsxbl(Register dst, Register src) { |
| 1387 EnsureSpace ensure_space(this); |
| 1388 if (!src.is_byte_register()) { |
| 1389 // Register is not one of al, bl, cl, dl. Its encoding needs REX. |
| 1390 emit_rex_32(dst, src); |
| 1391 } else { |
| 1392 emit_optional_rex_32(dst, src); |
| 1393 } |
| 1394 emit(0x0F); |
| 1395 emit(0xBE); |
| 1396 emit_modrm(dst, src); |
| 1397 } |
| 1398 |
| 1399 |
1386 void Assembler::movsxbl(Register dst, const Operand& src) { | 1400 void Assembler::movsxbl(Register dst, const Operand& src) { |
1387 EnsureSpace ensure_space(this); | 1401 EnsureSpace ensure_space(this); |
1388 emit_optional_rex_32(dst, src); | 1402 emit_optional_rex_32(dst, src); |
1389 emit(0x0F); | 1403 emit(0x0F); |
1390 emit(0xBE); | 1404 emit(0xBE); |
1391 emit_operand(dst, src); | 1405 emit_operand(dst, src); |
1392 } | 1406 } |
1393 | 1407 |
1394 | 1408 |
1395 void Assembler::movsxbq(Register dst, const Operand& src) { | 1409 void Assembler::movsxbq(Register dst, const Operand& src) { |
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3170 | 3184 |
3171 | 3185 |
3172 bool RelocInfo::IsInConstantPool() { | 3186 bool RelocInfo::IsInConstantPool() { |
3173 return false; | 3187 return false; |
3174 } | 3188 } |
3175 | 3189 |
3176 | 3190 |
3177 } } // namespace v8::internal | 3191 } } // namespace v8::internal |
3178 | 3192 |
3179 #endif // V8_TARGET_ARCH_X64 | 3193 #endif // V8_TARGET_ARCH_X64 |
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