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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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558 static const int kJumpInstructionLength = 13; | 558 static const int kJumpInstructionLength = 13; |
559 static const int kCallInstructionLength = 13; | 559 static const int kCallInstructionLength = 13; |
560 static const int kJSReturnSequenceLength = 13; | 560 static const int kJSReturnSequenceLength = 13; |
561 static const int kShortCallInstructionLength = 5; | 561 static const int kShortCallInstructionLength = 5; |
562 | 562 |
563 // The debug break slot must be able to contain a call instruction. | 563 // The debug break slot must be able to contain a call instruction. |
564 static const int kDebugBreakSlotLength = kCallInstructionLength; | 564 static const int kDebugBreakSlotLength = kCallInstructionLength; |
565 | 565 |
566 // One byte opcode for test eax,0xXXXXXXXX. | 566 // One byte opcode for test eax,0xXXXXXXXX. |
567 static const byte kTestEaxByte = 0xA9; | 567 static const byte kTestEaxByte = 0xA9; |
| 568 // One byte opcode for test al, 0xXX. |
| 569 static const byte kTestAlByte = 0xA8; |
568 | 570 |
569 // --------------------------------------------------------------------------- | 571 // --------------------------------------------------------------------------- |
570 // Code generation | 572 // Code generation |
571 // | 573 // |
572 // Function names correspond one-to-one to x64 instruction mnemonics. | 574 // Function names correspond one-to-one to x64 instruction mnemonics. |
573 // Unless specified otherwise, instructions operate on 64-bit operands. | 575 // Unless specified otherwise, instructions operate on 64-bit operands. |
574 // | 576 // |
575 // If we need versions of an assembly instruction that operate on different | 577 // If we need versions of an assembly instruction that operate on different |
576 // width arguments, we add a single-letter suffix specifying the width. | 578 // width arguments, we add a single-letter suffix specifying the width. |
577 // This is done for the following instructions: mov, cmp, inc, dec, | 579 // This is done for the following instructions: mov, cmp, inc, dec, |
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856 // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. | 858 // Divide edx:eax by lower 32 bits of src. Quotient in eax, rem. in edx. |
857 void idivl(Register src); | 859 void idivl(Register src); |
858 | 860 |
859 // Signed multiply instructions. | 861 // Signed multiply instructions. |
860 void imul(Register src); // rdx:rax = rax * src. | 862 void imul(Register src); // rdx:rax = rax * src. |
861 void imul(Register dst, Register src); // dst = dst * src. | 863 void imul(Register dst, Register src); // dst = dst * src. |
862 void imul(Register dst, const Operand& src); // dst = dst * src. | 864 void imul(Register dst, const Operand& src); // dst = dst * src. |
863 void imul(Register dst, Register src, Immediate imm); // dst = src * imm. | 865 void imul(Register dst, Register src, Immediate imm); // dst = src * imm. |
864 // Signed 32-bit multiply instructions. | 866 // Signed 32-bit multiply instructions. |
865 void imull(Register dst, Register src); // dst = dst * src. | 867 void imull(Register dst, Register src); // dst = dst * src. |
| 868 void imull(Register dst, const Operand& src); // dst = dst * src. |
866 void imull(Register dst, Register src, Immediate imm); // dst = src * imm. | 869 void imull(Register dst, Register src, Immediate imm); // dst = src * imm. |
867 | 870 |
868 void incq(Register dst); | 871 void incq(Register dst); |
869 void incq(const Operand& dst); | 872 void incq(const Operand& dst); |
870 void incl(Register dst); | 873 void incl(Register dst); |
871 void incl(const Operand& dst); | 874 void incl(const Operand& dst); |
872 | 875 |
873 void lea(Register dst, const Operand& src); | 876 void lea(Register dst, const Operand& src); |
874 void leal(Register dst, const Operand& src); | 877 void leal(Register dst, const Operand& src); |
875 | 878 |
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1561 private: | 1564 private: |
1562 Assembler* assembler_; | 1565 Assembler* assembler_; |
1563 #ifdef DEBUG | 1566 #ifdef DEBUG |
1564 int space_before_; | 1567 int space_before_; |
1565 #endif | 1568 #endif |
1566 }; | 1569 }; |
1567 | 1570 |
1568 } } // namespace v8::internal | 1571 } } // namespace v8::internal |
1569 | 1572 |
1570 #endif // V8_X64_ASSEMBLER_X64_H_ | 1573 #endif // V8_X64_ASSEMBLER_X64_H_ |
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