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// Copyright 2011 Google Inc. All Rights Reserved.
#ifndef ART_SRC_CONSTANTS_X86_H_
#define ART_SRC_CONSTANTS_X86_H_
#include <iosfwd>
#include "globals.h"
#include "logging.h"
#include "macros.h"
namespace art {
namespace x86 {
enum Register {
EAX = 0,
ECX = 1,
EDX = 2,
EBX = 3,
ESP = 4,
EBP = 5,
ESI = 6,
EDI = 7,
kNumberOfCpuRegisters = 8,
kFirstByteUnsafeRegister = 4,
kNoRegister = -1 // Signals an illegal register.
};
std::ostream& operator<<(std::ostream& os, const Register& rhs);
enum ByteRegister {
AL = 0,
CL = 1,
DL = 2,
BL = 3,
AH = 4,
CH = 5,
DH = 6,
BH = 7,
kNoByteRegister = -1 // Signals an illegal register.
};
enum XmmRegister {
XMM0 = 0,
XMM1 = 1,
XMM2 = 2,
XMM3 = 3,
XMM4 = 4,
XMM5 = 5,
XMM6 = 6,
XMM7 = 7,
kNumberOfXmmRegisters = 8,
kNoXmmRegister = -1 // Signals an illegal register.
};
std::ostream& operator<<(std::ostream& os, const XmmRegister& reg);
enum X87Register {
ST0 = 0,
ST1 = 1,
ST2 = 2,
ST3 = 3,
ST4 = 4,
ST5 = 5,
ST6 = 6,
ST7 = 7,
kNumberOfX87Registers = 8,
kNoX87Register = -1 // Signals an illegal register.
};
std::ostream& operator<<(std::ostream& os, const X87Register& reg);
enum ScaleFactor {
TIMES_1 = 0,
TIMES_2 = 1,
TIMES_4 = 2,
TIMES_8 = 3
};
enum Condition {
kOverflow = 0,
kNoOverflow = 1,
kBelow = 2,
kAboveEqual = 3,
kEqual = 4,
kNotEqual = 5,
kBelowEqual = 6,
kAbove = 7,
kSign = 8,
kNotSign = 9,
kParityEven = 10,
kParityOdd = 11,
kLess = 12,
kGreaterEqual = 13,
kLessEqual = 14,
kGreater = 15,
kZero = kEqual,
kNotZero = kNotEqual,
kNegative = kSign,
kPositive = kNotSign
};
class Instr {
public:
static const uint8_t kHltInstruction = 0xF4;
// We prefer not to use the int3 instruction since it conflicts with gdb.
static const uint8_t kBreakPointInstruction = kHltInstruction;
static const int kBreakPointInstructionSize = 1;
bool IsBreakPoint() {
CHECK_EQ(kBreakPointInstructionSize, 1);
return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction;
}
// Instructions are read out of a code stream. The only way to get a
// reference to an instruction is to convert a pointer. There is no way
// to allocate or create instances of class Instr.
// Use the At(pc) function to create references to Instr.
static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); }
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
};
} // namespace x86
} // namespace art
#endif // ART_SRC_CONSTANTS_X86_H_