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Elliott Hughes2faa5f12012-01-30 14:42:07 -08001/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070016
17#ifndef ART_SRC_CONSTANTS_X86_H_
18#define ART_SRC_CONSTANTS_X86_H_
19
Ian Rogersb033c752011-07-20 12:22:35 -070020#include <iosfwd>
Brian Carlstrom578bbdc2011-07-21 14:07:47 -070021#include "globals.h"
22#include "logging.h"
23#include "macros.h"
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070024
Carl Shapiro6b6b5f02011-06-21 15:05:09 -070025namespace art {
Ian Rogers2c8f6532011-09-02 17:16:34 -070026namespace x86 {
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070027
28enum Register {
29 EAX = 0,
30 ECX = 1,
31 EDX = 2,
32 EBX = 3,
33 ESP = 4,
34 EBP = 5,
35 ESI = 6,
36 EDI = 7,
37 kNumberOfCpuRegisters = 8,
38 kFirstByteUnsafeRegister = 4,
39 kNoRegister = -1 // Signals an illegal register.
40};
Elliott Hughes1f359b02011-07-17 14:27:17 -070041std::ostream& operator<<(std::ostream& os, const Register& rhs);
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070042
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070043enum ByteRegister {
44 AL = 0,
45 CL = 1,
46 DL = 2,
47 BL = 3,
48 AH = 4,
49 CH = 5,
50 DH = 6,
51 BH = 7,
52 kNoByteRegister = -1 // Signals an illegal register.
53};
54
55
56enum XmmRegister {
57 XMM0 = 0,
58 XMM1 = 1,
59 XMM2 = 2,
60 XMM3 = 3,
61 XMM4 = 4,
62 XMM5 = 5,
63 XMM6 = 6,
64 XMM7 = 7,
65 kNumberOfXmmRegisters = 8,
66 kNoXmmRegister = -1 // Signals an illegal register.
67};
Ian Rogersb033c752011-07-20 12:22:35 -070068std::ostream& operator<<(std::ostream& os, const XmmRegister& reg);
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070069
Ian Rogersb033c752011-07-20 12:22:35 -070070enum X87Register {
71 ST0 = 0,
72 ST1 = 1,
73 ST2 = 2,
74 ST3 = 3,
75 ST4 = 4,
76 ST5 = 5,
77 ST6 = 6,
78 ST7 = 7,
79 kNumberOfX87Registers = 8,
80 kNoX87Register = -1 // Signals an illegal register.
81};
82std::ostream& operator<<(std::ostream& os, const X87Register& reg);
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070083
84enum ScaleFactor {
85 TIMES_1 = 0,
86 TIMES_2 = 1,
87 TIMES_4 = 2,
88 TIMES_8 = 3
89};
90
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -070091enum Condition {
Elliott Hughes18c07532011-08-18 15:50:51 -070092 kOverflow = 0,
93 kNoOverflow = 1,
94 kBelow = 2,
95 kAboveEqual = 3,
96 kEqual = 4,
97 kNotEqual = 5,
98 kBelowEqual = 6,
99 kAbove = 7,
100 kSign = 8,
101 kNotSign = 9,
102 kParityEven = 10,
103 kParityOdd = 11,
104 kLess = 12,
105 kGreaterEqual = 13,
106 kLessEqual = 14,
107 kGreater = 15,
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -0700108
Elliott Hughes18c07532011-08-18 15:50:51 -0700109 kZero = kEqual,
110 kNotZero = kNotEqual,
111 kNegative = kSign,
112 kPositive = kNotSign
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -0700113};
114
115
116class Instr {
117 public:
118 static const uint8_t kHltInstruction = 0xF4;
119 // We prefer not to use the int3 instruction since it conflicts with gdb.
120 static const uint8_t kBreakPointInstruction = kHltInstruction;
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -0700121
122 bool IsBreakPoint() {
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -0700123 return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction;
124 }
125
126 // Instructions are read out of a code stream. The only way to get a
127 // reference to an instruction is to convert a pointer. There is no way
128 // to allocate or create instances of class Instr.
129 // Use the At(pc) function to create references to Instr.
130 static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); }
131
132 private:
133 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
134};
135
Ian Rogers2c8f6532011-09-02 17:16:34 -0700136} // namespace x86
Carl Shapiro6b6b5f02011-06-21 15:05:09 -0700137} // namespace art
Carl Shapiroa5d5cfd2011-06-21 12:46:59 -0700138
Carl Shapiro6b6b5f02011-06-21 15:05:09 -0700139#endif // ART_SRC_CONSTANTS_X86_H_