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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/disassembler.h" | 5 #include "vm/disassembler.h" |
6 | 6 |
7 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. | 7 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
8 #if defined(TARGET_ARCH_X64) | 8 #if defined(TARGET_ARCH_X64) |
9 #include "platform/utils.h" | 9 #include "platform/utils.h" |
10 #include "vm/allocation.h" | 10 #include "vm/allocation.h" |
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1192 // These instructions may be affected by an 0x66, 0xF2, or 0xF3 prefix. | 1192 // These instructions may be affected by an 0x66, 0xF2, or 0xF3 prefix. |
1193 // We do not use any three-byte opcodes, which start with 0x0F38 or 0x0F3A. | 1193 // We do not use any three-byte opcodes, which start with 0x0F38 or 0x0F3A. |
1194 int DisassemblerX64::TwoByteOpcodeInstruction(uint8_t* data) { | 1194 int DisassemblerX64::TwoByteOpcodeInstruction(uint8_t* data) { |
1195 uint8_t opcode = *(data + 1); | 1195 uint8_t opcode = *(data + 1); |
1196 uint8_t* current = data + 2; | 1196 uint8_t* current = data + 2; |
1197 // At return, "current" points to the start of the next instruction. | 1197 // At return, "current" points to the start of the next instruction. |
1198 const char* mnemonic = TwoByteMnemonic(opcode); | 1198 const char* mnemonic = TwoByteMnemonic(opcode); |
1199 if (operand_size_ == 0x66) { | 1199 if (operand_size_ == 0x66) { |
1200 // 0x66 0x0F prefix. | 1200 // 0x66 0x0F prefix. |
1201 int mod, regop, rm; | 1201 int mod, regop, rm; |
1202 if (opcode == 0x3A) { | 1202 if (opcode == 0xC6) { |
| 1203 int mod, regop, rm; |
| 1204 get_modrm(*current, &mod, ®op, &rm); |
| 1205 AppendToBuffer("shufpd %s, ", NameOfXMMRegister(regop)); |
| 1206 current += PrintRightXMMOperand(current); |
| 1207 AppendToBuffer(" [%x]", *current); |
| 1208 current++; |
| 1209 } else if (opcode == 0x3A) { |
1203 uint8_t third_byte = *current; | 1210 uint8_t third_byte = *current; |
1204 current = data + 3; | 1211 current = data + 3; |
1205 if (third_byte == 0x17) { | 1212 if (third_byte == 0x17) { |
1206 get_modrm(*current, &mod, ®op, &rm); | 1213 get_modrm(*current, &mod, ®op, &rm); |
1207 AppendToBuffer("extractps "); // reg/m32, xmm, imm8 | 1214 AppendToBuffer("extractps "); // reg/m32, xmm, imm8 |
1208 current += PrintRightOperand(current); | 1215 current += PrintRightOperand(current); |
1209 AppendToBuffer(", %s, %d", NameOfCPURegister(regop), (*current) & 3); | 1216 AppendToBuffer(", %s, %d", NameOfCPURegister(regop), (*current) & 3); |
1210 current += 1; | 1217 current += 1; |
1211 } else if (third_byte == 0x0b) { | 1218 } else if (third_byte == 0x0b) { |
1212 get_modrm(*current, &mod, ®op, &rm); | 1219 get_modrm(*current, &mod, ®op, &rm); |
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1960 pc); | 1967 pc); |
1961 pc += instruction_length; | 1968 pc += instruction_length; |
1962 } | 1969 } |
1963 | 1970 |
1964 return; | 1971 return; |
1965 } | 1972 } |
1966 | 1973 |
1967 } // namespace dart | 1974 } // namespace dart |
1968 | 1975 |
1969 #endif // defined TARGET_ARCH_X64 | 1976 #endif // defined TARGET_ARCH_X64 |
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