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| 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef V8_COMPILER_INSTRUCTION_CODES_H_ |
| 6 #define V8_COMPILER_INSTRUCTION_CODES_H_ |
| 7 |
| 8 #if V8_TARGET_ARCH_ARM |
| 9 #include "src/compiler/arm/instruction-codes-arm.h" |
| 10 #elif V8_TARGET_ARCH_ARM64 |
| 11 #include "src/compiler/arm64/instruction-codes-arm64.h" |
| 12 #elif V8_TARGET_ARCH_IA32 |
| 13 #include "src/compiler/ia32/instruction-codes-ia32.h" |
| 14 #elif V8_TARGET_ARCH_X64 |
| 15 #include "src/compiler/x64/instruction-codes-x64.h" |
| 16 #else |
| 17 #error "Unsupported target architecture." |
| 18 #endif |
| 19 #include "src/utils.h" |
| 20 |
| 21 namespace v8 { |
| 22 namespace internal { |
| 23 |
| 24 class OStream; |
| 25 |
| 26 namespace compiler { |
| 27 |
| 28 // Target-specific opcodes that specify which assembly sequence to emit. |
| 29 // Most opcodes specify a single instruction. |
| 30 #define ARCH_OPCODE_LIST(V) \ |
| 31 V(ArchDeoptimize) \ |
| 32 V(ArchJmp) \ |
| 33 V(ArchNop) \ |
| 34 V(ArchRet) \ |
| 35 TARGET_ARCH_OPCODE_LIST(V) |
| 36 |
| 37 enum ArchOpcode { |
| 38 #define DECLARE_ARCH_OPCODE(Name) k##Name, |
| 39 ARCH_OPCODE_LIST(DECLARE_ARCH_OPCODE) |
| 40 #undef DECLARE_ARCH_OPCODE |
| 41 #define COUNT_ARCH_OPCODE(Name) +1 |
| 42 kLastArchOpcode = -1 ARCH_OPCODE_LIST(COUNT_ARCH_OPCODE) |
| 43 #undef COUNT_ARCH_OPCODE |
| 44 }; |
| 45 |
| 46 OStream& operator<<(OStream& os, const ArchOpcode& ao); |
| 47 |
| 48 // Addressing modes represent the "shape" of inputs to an instruction. |
| 49 // Many instructions support multiple addressing modes. Addressing modes |
| 50 // are encoded into the InstructionCode of the instruction and tell the |
| 51 // code generator after register allocation which assembler method to call. |
| 52 #define ADDRESSING_MODE_LIST(V) \ |
| 53 V(None) \ |
| 54 TARGET_ADDRESSING_MODE_LIST(V) |
| 55 |
| 56 enum AddressingMode { |
| 57 #define DECLARE_ADDRESSING_MODE(Name) kMode_##Name, |
| 58 ADDRESSING_MODE_LIST(DECLARE_ADDRESSING_MODE) |
| 59 #undef DECLARE_ADDRESSING_MODE |
| 60 #define COUNT_ADDRESSING_MODE(Name) +1 |
| 61 kLastAddressingMode = -1 ADDRESSING_MODE_LIST(COUNT_ADDRESSING_MODE) |
| 62 #undef COUNT_ADDRESSING_MODE |
| 63 }; |
| 64 |
| 65 OStream& operator<<(OStream& os, const AddressingMode& am); |
| 66 |
| 67 // The mode of the flags continuation (see below). |
| 68 enum FlagsMode { kFlags_none = 0, kFlags_branch = 1, kFlags_set = 2 }; |
| 69 |
| 70 OStream& operator<<(OStream& os, const FlagsMode& fm); |
| 71 |
| 72 // The condition of flags continuation (see below). |
| 73 enum FlagsCondition { |
| 74 kEqual, |
| 75 kNotEqual, |
| 76 kSignedLessThan, |
| 77 kSignedGreaterThanOrEqual, |
| 78 kSignedLessThanOrEqual, |
| 79 kSignedGreaterThan, |
| 80 kUnsignedLessThan, |
| 81 kUnsignedGreaterThanOrEqual, |
| 82 kUnsignedLessThanOrEqual, |
| 83 kUnsignedGreaterThan, |
| 84 kUnorderedEqual, |
| 85 kUnorderedNotEqual, |
| 86 kUnorderedLessThan, |
| 87 kUnorderedGreaterThanOrEqual, |
| 88 kUnorderedLessThanOrEqual, |
| 89 kUnorderedGreaterThan |
| 90 }; |
| 91 |
| 92 OStream& operator<<(OStream& os, const FlagsCondition& fc); |
| 93 |
| 94 // The InstructionCode is an opaque, target-specific integer that encodes |
| 95 // what code to emit for an instruction in the code generator. It is not |
| 96 // interesting to the register allocator, as the inputs and flags on the |
| 97 // instructions specify everything of interest. |
| 98 typedef int32_t InstructionCode; |
| 99 |
| 100 // Helpers for encoding / decoding InstructionCode into the fields needed |
| 101 // for code generation. We encode the instruction, addressing mode, and flags |
| 102 // continuation into a single InstructionCode which is stored as part of |
| 103 // the instruction. |
| 104 typedef BitField<ArchOpcode, 0, 7> ArchOpcodeField; |
| 105 typedef BitField<AddressingMode, 7, 4> AddressingModeField; |
| 106 typedef BitField<FlagsMode, 11, 2> FlagsModeField; |
| 107 typedef BitField<FlagsCondition, 13, 4> FlagsConditionField; |
| 108 typedef BitField<int, 13, 19> MiscField; |
| 109 |
| 110 } // namespace compiler |
| 111 } // namespace internal |
| 112 } // namespace v8 |
| 113 |
| 114 #endif // V8_COMPILER_INSTRUCTION_CODES_H_ |
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