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Instruction

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Document Number: MD00086

Revision 2.50

July 1, 2005

MIPS Technologies, Inc.

1225 Charleston Road

Mountain View, CA 94043-1353

MIPS32® Architecture For Programmers

Volume II: The MIPS32® Instruction Set

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MIPS32® Architecture For Programmers Volume II, Revision 2.50

Template: B1.14, Built with tags: 2B ARCH FPU_PS FPU_PSandARCH MIPS32

MIPS32® Architecture For Programmers Volume II, Revision 2.50 i

Table of Contents

Chapter 1 About This Book ................................................................................................................................................. 1

1.1 Typographical Conventions ................................................................................................................................... 1

1.1.1 Italic Text ..................................................................................................................................................... 1

1.1.2 Bold Text ..................................................................................................................................................... 1

1.1.3 Courier Text ................................................................................................................................................. 1

1.2 UNPREDICTABLE and UNDEFINED ................................................................................................................ 2

1.2.1 UNPREDICTABLE ..................................................................................................................................... 2

1.2.2 UNDEFINED ............................................................................................................................................... 2

1.2.3 UNSTABLE ................................................................................................................................................. 2

1.3 Special Symbols in Pseudocode Notation .............................................................................................................. 3

1.4 For More Information ............................................................................................................................................ 5

Chapter 2 Guide to the Instruction Set ................................................................................................................................. 7

2.1 Understanding the Instruction Fields ..................................................................................................................... 7

2.1.1 Instruction Fields ......................................................................................................................................... 8

2.1.2 Instruction Descriptive Name and Mnemonic ............................................................................................. 9

2.1.3 Format Field ................................................................................................................................................. 9

2.1.4 Purpose Field ............................................................................................................................................. 10

2.1.5 Description Field ........................................................................................................................................ 10

2.1.6 Restrictions Field ....................................................................................................................................... 10

2.1.7 Operation Field .......................................................................................................................................... 11

2.1.8 Exceptions Field ......................................................................................................................................... 11

2.1.9 Programming Notes and Implementation Notes Fields ............................................................................. 11

2.2 Operation Section Notation and Functions .......................................................................................................... 12

2.2.1 Instruction Execution Ordering .................................................................................................................. 12

2.2.2 Pseudocode Functions ................................................................................................................................ 12

2.3 Op and Function Subfield Notation ..................................................................................................................... 22

2.4 FPU Instructions .................................................................................................................................................. 22

Chapter 3 The MIPS32® Instruction Set ........................................................................................................................... 23

3.1 Compliance and Subsetting .................................................................................................................................. 23

3.2 Alphabetical List of Instructions .......................................................................................................................... 24

ABS.fmt ....................................................................................................................................................................... 33

ADD............................................................................................................................................................................. 34

ADD.fmt ...................................................................................................................................................................... 35

ADDI............................................................................................................................................................................ 36

ADDIU......................................................................................................................................................................... 37

ADDU .......................................................................................................................................................................... 38

ALNV.PS ..................................................................................................................................................................... 39

AND............................................................................................................................................................................. 42

ANDI............................................................................................................................................................................ 43

B................................................................................................................................................................................... 44

BAL.............................................................................................................................................................................. 45

BC1F............................................................................................................................................................................ 46

BC1FL.......................................................................................................................................................................... 48

BC1T............................................................................................................................................................................ 50

BC1TL ......................................................................................................................................................................... 52

BC2F............................................................................................................................................................................ 54

BC2FL.......................................................................................................................................................................... 55

BC2T............................................................................................................................................................................ 57

BC2TL ......................................................................................................................................................................... 58

ii MIPS32® Architecture For Programmers Volume II, Revision 2.50

BEQ.............................................................................................................................................................................. 60

BEQL ........................................................................................................................................................................... 61

BGEZ ........................................................................................................................................................................... 63

BGEZAL...................................................................................................................................................................... 64

BGEZALL ................................................................................................................................................................... 65

BGEZL......................................................................................................................................................................... 67

BGTZ ........................................................................................................................................................................... 69

BGTZL......................................................................................................................................................................... 70

BLEZ............................................................................................................................................................................ 72

BLEZL ......................................................................................................................................................................... 73

BLTZ............................................................................................................................................................................ 75

BLTZAL ...................................................................................................................................................................... 76

BLTZALL.................................................................................................................................................................... 77

BLTZL ......................................................................................................................................................................... 79

BNE.............................................................................................................................................................................. 81

BNEL ........................................................................................................................................................................... 82

BREAK ........................................................................................................................................................................ 84

C.cond.fmt.................................................................................................................................................................... 85

CACHE ........................................................................................................................................................................ 90

CEIL.L.fmt................................................................................................................................................................... 97

CEIL.W.fmt ................................................................................................................................................................. 99

CFC1.......................................................................................................................................................................... 100

CFC2.......................................................................................................................................................................... 102

CLO............................................................................................................................................................................ 103

CLZ ............................................................................................................................................................................ 104

COP2.......................................................................................................................................................................... 105

CTC1.......................................................................................................................................................................... 106

CTC2.......................................................................................................................................................................... 108

CVT.D.fmt ................................................................................................................................................................. 109

CVT.L.fmt.................................................................................................................................................................. 110

CVT.PS.S................................................................................................................................................................... 112

CVT.S.fmt.................................................................................................................................................................. 114

CVT.S.PL................................................................................................................................................................... 115

CVT.S.PU .................................................................................................................................................................. 116

CVT.W.fmt ................................................................................................................................................................ 117

DERET....................................................................................................................................................................... 118

DI ............................................................................................................................................................................... 120

DIV............................................................................................................................................................................. 122

DIV.fmt...................................................................................................................................................................... 124

DIVU.......................................................................................................................................................................... 125

EHB............................................................................................................................................................................ 126

EI................................................................................................................................................................................ 127

ERET.......................................................................................................................................................................... 129

EXT............................................................................................................................................................................ 131

FLOOR.L.fmt............................................................................................................................................................. 133

FLOOR.W.fmt ........................................................................................................................................................... 135

INS ............................................................................................................................................................................. 136

J .................................................................................................................................................................................. 138

JAL............................................................................................................................................................................. 139

JALR .......................................................................................................................................................................... 140

JALR.HB.................................................................................................................................................................... 142

JR ............................................................................................................................................................................... 145

JR.HB......................................................................................................................................................................... 147

LB............................................................................................................................................................................... 150

LBU............................................................................................................................................................................ 151

MIPS32® Architecture For Programmers Volume II, Revision 2.50 iii

LDC1.......................................................................................................................................................................... 152

LDC2.......................................................................................................................................................................... 153

LDXC1....................................................................................................................................................................... 154

LH .............................................................................................................................................................................. 155

LHU ........................................................................................................................................................................... 156

LL............................................................................................................................................................................... 157

LUI............................................................................................................................................................................. 159

LUXC1....................................................................................................................................................................... 160

LW ............................................................................................................................................................................. 161

LWC1......................................................................................................................................................................... 162

LWC2......................................................................................................................................................................... 163

LWL........................................................................................................................................................................... 164

LWR........................................................................................................................................................................... 167

LWXC1...................................................................................................................................................................... 171

MADD ....................................................................................................................................................................... 172

MADD.fmt................................................................................................................................................................. 173

MADDU..................................................................................................................................................................... 175

MFC0 ......................................................................................................................................................................... 176

MFC1 ......................................................................................................................................................................... 177

MFC2 ......................................................................................................................................................................... 178

MFHC1 ...................................................................................................................................................................... 179

MFHC2 ...................................................................................................................................................................... 180

MFHI.......................................................................................................................................................................... 181

MFLO......................................................................................................................................................................... 182

MOV.fmt.................................................................................................................................................................... 183

MOVF ........................................................................................................................................................................ 184

MOVF.fmt.................................................................................................................................................................. 185

MOVN ....................................................................................................................................................................... 187

MOVN.fmt................................................................................................................................................................. 188

MOVT........................................................................................................................................................................ 190

MOVT.fmt ................................................................................................................................................................. 191

MOVZ........................................................................................................................................................................ 193

MOVZ.fmt ................................................................................................................................................................. 194

MSUB ........................................................................................................................................................................ 196

MSUB.fmt.................................................................................................................................................................. 197

MSUBU ..................................................................................................................................................................... 199

MTC0......................................................................................................................................................................... 200

MTC1......................................................................................................................................................................... 201

MTC2......................................................................................................................................................................... 202

MTHC1 ...................................................................................................................................................................... 203

MTHC2 ...................................................................................................................................................................... 204

MTHI ......................................................................................................................................................................... 205

MTLO ........................................................................................................................................................................ 206

MUL........................................................................................................................................................................... 207

MUL.fmt .................................................................................................................................................................... 208

MULT ........................................................................................................................................................................ 209

MULTU ..................................................................................................................................................................... 210

NEG.fmt..................................................................................................................................................................... 211

NMADD.fmt.............................................................................................................................................................. 212

NMSUB.fmt............................................................................................................................................................... 214

NOP............................................................................................................................................................................ 216

NOR ........................................................................................................................................................................... 217

OR .............................................................................................................................................................................. 218

ORI............................................................................................................................................................................. 219

PLL.PS....................................................................................................................................................................... 220