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Issue 9836108: Rollback of r11015, r11014, r11011, r11010 in trunk branch. (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Finish file upload Created 8 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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27 27
28 #include <assert.h> 28 #include <assert.h>
29 #include <stdio.h> 29 #include <stdio.h>
30 #include <stdarg.h> 30 #include <stdarg.h>
31 31
32 #include "v8.h" 32 #include "v8.h"
33 33
34 #if defined(V8_TARGET_ARCH_X64) 34 #if defined(V8_TARGET_ARCH_X64)
35 35
36 #include "disasm.h" 36 #include "disasm.h"
37 #include "lazy-instance.h"
38 37
39 namespace disasm { 38 namespace disasm {
40 39
41 enum OperandType { 40 enum OperandType {
42 UNSET_OP_ORDER = 0, 41 UNSET_OP_ORDER = 0,
43 // Operand size decides between 16, 32 and 64 bit operands. 42 // Operand size decides between 16, 32 and 64 bit operands.
44 REG_OPER_OP_ORDER = 1, // Register destination, operand source. 43 REG_OPER_OP_ORDER = 1, // Register destination, operand source.
45 OPER_REG_OP_ORDER = 2, // Operand destination, register source. 44 OPER_REG_OP_ORDER = 2, // Operand destination, register source.
46 // Fixed 8-bit operands. 45 // Fixed 8-bit operands.
47 BYTE_SIZE_OPERAND_FLAG = 4, 46 BYTE_SIZE_OPERAND_FLAG = 4,
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263 void InstructionTable::AddJumpConditionalShort() { 262 void InstructionTable::AddJumpConditionalShort() {
264 for (byte b = 0x70; b <= 0x7F; b++) { 263 for (byte b = 0x70; b <= 0x7F; b++) {
265 InstructionDesc* id = &instructions_[b]; 264 InstructionDesc* id = &instructions_[b];
266 ASSERT_EQ(NO_INSTR, id->type); // Information not already entered 265 ASSERT_EQ(NO_INSTR, id->type); // Information not already entered
267 id->mnem = NULL; // Computed depending on condition code. 266 id->mnem = NULL; // Computed depending on condition code.
268 id->type = JUMP_CONDITIONAL_SHORT_INSTR; 267 id->type = JUMP_CONDITIONAL_SHORT_INSTR;
269 } 268 }
270 } 269 }
271 270
272 271
273 static v8::internal::LazyInstance<InstructionTable>::type instruction_table = 272 static InstructionTable instruction_table;
274 LAZY_INSTANCE_INITIALIZER;
275 273
276 274
277 static InstructionDesc cmov_instructions[16] = { 275 static InstructionDesc cmov_instructions[16] = {
278 {"cmovo", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 276 {"cmovo", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
279 {"cmovno", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 277 {"cmovno", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
280 {"cmovc", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 278 {"cmovc", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
281 {"cmovnc", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 279 {"cmovnc", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
282 {"cmovz", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 280 {"cmovz", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
283 {"cmovnz", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 281 {"cmovnz", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
284 {"cmovna", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false}, 282 {"cmovna", TWO_OPERANDS_INSTR, REG_OPER_OP_ORDER, false},
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1333 setRex(current); 1331 setRex(current);
1334 if (rex_w()) AppendToBuffer("REX.W "); 1332 if (rex_w()) AppendToBuffer("REX.W ");
1335 } else if ((current & 0xFE) == 0xF2) { // Group 1 prefix (0xF2 or 0xF3). 1333 } else if ((current & 0xFE) == 0xF2) { // Group 1 prefix (0xF2 or 0xF3).
1336 group_1_prefix_ = current; 1334 group_1_prefix_ = current;
1337 } else { // Not a prefix - an opcode. 1335 } else { // Not a prefix - an opcode.
1338 break; 1336 break;
1339 } 1337 }
1340 data++; 1338 data++;
1341 } 1339 }
1342 1340
1343 const InstructionDesc& idesc = instruction_table.Get().Get(current); 1341 const InstructionDesc& idesc = instruction_table.Get(current);
1344 byte_size_operand_ = idesc.byte_size_operation; 1342 byte_size_operand_ = idesc.byte_size_operation;
1345 switch (idesc.type) { 1343 switch (idesc.type) {
1346 case ZERO_OPERANDS_INSTR: 1344 case ZERO_OPERANDS_INSTR:
1347 if (current >= 0xA4 && current <= 0xA7) { 1345 if (current >= 0xA4 && current <= 0xA7) {
1348 // String move or compare operations. 1346 // String move or compare operations.
1349 if (group_1_prefix_ == REP_PREFIX) { 1347 if (group_1_prefix_ == REP_PREFIX) {
1350 // REP. 1348 // REP.
1351 AppendToBuffer("rep "); 1349 AppendToBuffer("rep ");
1352 } 1350 }
1353 if (rex_w()) AppendToBuffer("REX.W "); 1351 if (rex_w()) AppendToBuffer("REX.W ");
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1843 for (int i = 6 - static_cast<int>(pc - prev_pc); i >= 0; i--) { 1841 for (int i = 6 - static_cast<int>(pc - prev_pc); i >= 0; i--) {
1844 fprintf(f, " "); 1842 fprintf(f, " ");
1845 } 1843 }
1846 fprintf(f, " %s\n", buffer.start()); 1844 fprintf(f, " %s\n", buffer.start());
1847 } 1845 }
1848 } 1846 }
1849 1847
1850 } // namespace disasm 1848 } // namespace disasm
1851 1849
1852 #endif // V8_TARGET_ARCH_X64 1850 #endif // V8_TARGET_ARCH_X64
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