| Carl Shapiro | a5d5cfd | 2011-06-21 12:46:59 -0700 | [diff] [blame^] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
| 2 | |
| 3 | #ifndef ART_SRC_CONSTANTS_X86_H_ |
| 4 | #define ART_SRC_CONSTANTS_X86_H_ |
| 5 | |
| 6 | #include "src/globals.h" |
| 7 | #include "src/logging.h" |
| 8 | #include "src/macros.h" |
| 9 | |
| 10 | namespace android { |
| 11 | namespace runtime { |
| 12 | |
| 13 | enum Register { |
| 14 | EAX = 0, |
| 15 | ECX = 1, |
| 16 | EDX = 2, |
| 17 | EBX = 3, |
| 18 | ESP = 4, |
| 19 | EBP = 5, |
| 20 | ESI = 6, |
| 21 | EDI = 7, |
| 22 | kNumberOfCpuRegisters = 8, |
| 23 | kFirstByteUnsafeRegister = 4, |
| 24 | kNoRegister = -1 // Signals an illegal register. |
| 25 | }; |
| 26 | |
| 27 | |
| 28 | enum ByteRegister { |
| 29 | AL = 0, |
| 30 | CL = 1, |
| 31 | DL = 2, |
| 32 | BL = 3, |
| 33 | AH = 4, |
| 34 | CH = 5, |
| 35 | DH = 6, |
| 36 | BH = 7, |
| 37 | kNoByteRegister = -1 // Signals an illegal register. |
| 38 | }; |
| 39 | |
| 40 | |
| 41 | enum XmmRegister { |
| 42 | XMM0 = 0, |
| 43 | XMM1 = 1, |
| 44 | XMM2 = 2, |
| 45 | XMM3 = 3, |
| 46 | XMM4 = 4, |
| 47 | XMM5 = 5, |
| 48 | XMM6 = 6, |
| 49 | XMM7 = 7, |
| 50 | kNumberOfXmmRegisters = 8, |
| 51 | kNoXmmRegister = -1 // Signals an illegal register. |
| 52 | }; |
| 53 | |
| 54 | |
| 55 | enum ScaleFactor { |
| 56 | TIMES_1 = 0, |
| 57 | TIMES_2 = 1, |
| 58 | TIMES_4 = 2, |
| 59 | TIMES_8 = 3 |
| 60 | }; |
| 61 | |
| 62 | |
| 63 | enum Condition { |
| 64 | OVERFLOW = 0, |
| 65 | NO_OVERFLOW = 1, |
| 66 | BELOW = 2, |
| 67 | ABOVE_EQUAL = 3, |
| 68 | EQUAL = 4, |
| 69 | NOT_EQUAL = 5, |
| 70 | BELOW_EQUAL = 6, |
| 71 | ABOVE = 7, |
| 72 | SIGN = 8, |
| 73 | NOT_SIGN = 9, |
| 74 | PARITY_EVEN = 10, |
| 75 | PARITY_ODD = 11, |
| 76 | LESS = 12, |
| 77 | GREATER_EQUAL = 13, |
| 78 | LESS_EQUAL = 14, |
| 79 | GREATER = 15, |
| 80 | |
| 81 | ZERO = EQUAL, |
| 82 | NOT_ZERO = NOT_EQUAL, |
| 83 | NEGATIVE = SIGN, |
| 84 | POSITIVE = NOT_SIGN |
| 85 | }; |
| 86 | |
| 87 | |
| 88 | class Instr { |
| 89 | public: |
| 90 | static const uint8_t kHltInstruction = 0xF4; |
| 91 | // We prefer not to use the int3 instruction since it conflicts with gdb. |
| 92 | static const uint8_t kBreakPointInstruction = kHltInstruction; |
| 93 | static const int kBreakPointInstructionSize = 1; |
| 94 | |
| 95 | bool IsBreakPoint() { |
| 96 | CHECK_EQ(kBreakPointInstructionSize, 1); |
| 97 | return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction; |
| 98 | } |
| 99 | |
| 100 | // Instructions are read out of a code stream. The only way to get a |
| 101 | // reference to an instruction is to convert a pointer. There is no way |
| 102 | // to allocate or create instances of class Instr. |
| 103 | // Use the At(pc) function to create references to Instr. |
| 104 | static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); } |
| 105 | |
| 106 | private: |
| 107 | DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); |
| 108 | }; |
| 109 | |
| 110 | } } // namespace android::runtime |
| 111 | |
| 112 | #endif // ART_CONSTANTS_IA32_H_ |