GNU Info
(nasm.info)Section B.4
B.4. x86 Instruction Set ========================
Section B.4.1- `AAA', `AAS', `AAM', `AAD': ASCII Adjustments
- Section B.4.2
- `ADC': Add with Carry
- Section B.4.3
- `ADD': Add Integers
- Section B.4.4
- `ADDPD': ADD Packed Double-Precision FP Values
- Section B.4.5
- `ADDPS': ADD Packed Single-Precision FP Values
- Section B.4.6
- `ADDSD': ADD Scalar Double-Precision FP Values
- Section B.4.7
- `ADDSS': ADD Scalar Single-Precision FP Values
- Section B.4.8
- `AND': Bitwise AND
- Section B.4.9
- `ANDNPD': Bitwise Logical AND NOT of Packed Double-Precision FP Values
- Section B.4.10
- `ANDNPS': Bitwise Logical AND NOT of Packed Single-Precision FP Values
- Section B.4.11
- `ANDPD': Bitwise Logical AND For Single FP
- Section B.4.12
- `ANDPS': Bitwise Logical AND For Single FP
- Section B.4.13
- `ARPL': Adjust RPL Field of Selector
- Section B.4.14
- `BOUND': Check Array Index against Bounds
- Section B.4.15
- `BSF', `BSR': Bit Scan
- Section B.4.16
- `BSWAP': Byte Swap
- Section B.4.17
- `BT', `BTC', `BTR', `BTS': Bit Test
- Section B.4.18
- `CALL': Call Subroutine
- Section B.4.19
- `CBW', `CWD', `CDQ', `CWDE': Sign Extensions
- Section B.4.20
- `CLC', `CLD', `CLI', `CLTS': Clear Flags
- Section B.4.21
- `CLFLUSH': Flush Cache Line
- Section B.4.22
- `CMC': Complement Carry Flag
- Section B.4.23
- `CMOVcc': Conditional Move
- Section B.4.24
- `CMP': Compare Integers
- Section B.4.25
- `CMPccPD': Packed Double-Precision FP Compare
- Section B.4.26
- `CMPccPS': Packed Single-Precision FP Compare
- Section B.4.27
- `CMPSB', `CMPSW', `CMPSD': Compare Strings
- Section B.4.28
- `CMPccSD': Scalar Double-Precision FP Compare
- Section B.4.29
- `CMPccSS': Scalar Single-Precision FP Compare
- Section B.4.30
- `CMPXCHG', `CMPXCHG486': Compare and Exchange
- Section B.4.31
- `CMPXCHG8B': Compare and Exchange Eight Bytes
- Section B.4.32
- `COMISD': Scalar Ordered Double-Precision FP Compare and Set EFLAGS
- Section B.4.33
- `COMISS': Scalar Ordered Single-Precision FP Compare and Set EFLAGS
- Section B.4.34
- `CPUID': Get CPU Identification Code
- Section B.4.35
- `CVTDQ2PD': Packed Signed INT32 to Packed Double-Precision FP Conversion
- Section B.4.36
- `CVTDQ2PS': Packed Signed INT32 to Packed Single-Precision FP Conversion
- Section B.4.37
- `CVTPD2DQ': Packed Double-Precision FP to Packed Signed INT32 Conversion
- Section B.4.38
- `CVTPD2PI': Packed Double-Precision FP to Packed Signed INT32 Conversion
- Section B.4.39
- `CVTPD2PS': Packed Double-Precision FP to Packed Single-Precision FP Conversion
- Section B.4.40
- `CVTPI2PD': Packed Signed INT32 to Packed Double-Precision FP Conversion
- Section B.4.41
- `CVTPI2PS': Packed Signed INT32 to Packed Single-FP Conversion
- Section B.4.42
- `CVTPS2DQ': Packed Single-Precision FP to Packed Signed INT32 Conversion
- Section B.4.43
- `CVTPS2PD': Packed Single-Precision FP to Packed Double-Precision FP Conversion
- Section B.4.44
- `CVTPS2PI': Packed Single-Precision FP to Packed Signed INT32 Conversion
- Section B.4.45
- `CVTSD2SI': Scalar Double-Precision FP to Signed INT32 Conversion
- Section B.4.46
- `CVTSD2SS': Scalar Double-Precision FP to Scalar Single-Precision FP Conversion
- Section B.4.47
- `CVTSI2SD': Signed INT32 to Scalar Double-Precision FP Conversion
- Section B.4.48
- `CVTSI2SS': Signed INT32 to Scalar Single-Precision FP Conversion
- Section B.4.49
- `CVTSS2SD': Scalar Single-Precision FP to Scalar Double-Precision FP Conversion
- Section B.4.50
- `CVTSS2SI': Scalar Single-Precision FP to Signed INT32 Conversion
- Section B.4.51
- `CVTTPD2DQ': Packed Double-Precision FP to Packed Signed INT32 Conversion with Truncation
- Section B.4.52
- `CVTTPD2PI': Packed Double-Precision FP to Packed Signed INT32 Conversion with Truncation
- Section B.4.53
- `CVTTPS2DQ': Packed Single-Precision FP to Packed Signed INT32 Conversion with Truncation
- Section B.4.54
- `CVTTPS2PI': Packed Single-Precision FP to Packed Signed INT32 Conversion with Truncation
- Section B.4.55
- `CVTTSD2SI': Scalar Double-Precision FP to Signed INT32 Conversion with Truncation
- Section B.4.56
- `CVTTSS2SI': Scalar Single-Precision FP to Signed INT32 Conversion with Truncation
- Section B.4.57
- `DAA', `DAS': Decimal Adjustments
- Section B.4.58
- `DEC': Decrement Integer
- Section B.4.59
- `DIV': Unsigned Integer Divide
- Section B.4.60
- `DIVPD': Packed Double-Precision FP Divide
- Section B.4.61
- `DIVPS': Packed Single-Precision FP Divide
- Section B.4.62
- `DIVSD': Scalar Double-Precision FP Divide
- Section B.4.63
- `DIVSS': Scalar Single-Precision FP Divide
- Section B.4.64
- `EMMS': Empty MMX State
- Section B.4.65
- `ENTER': Create Stack Frame
- Section B.4.66
- `F2XM1': Calculate 2**X-1
- Section B.4.67
- `FABS': Floating-Point Absolute Value
- Section B.4.68
- `FADD', `FADDP': Floating-Point Addition
- Section B.4.69
- `FBLD', `FBSTP': BCD Floating-Point Load and Store
- Section B.4.70
- `FCHS': Floating-Point Change Sign
- Section B.4.71
- `FCLEX', `FNCLEX': Clear Floating-Point Exceptions
- Section B.4.72
- `FCMOVcc': Floating-Point Conditional Move
- Section B.4.73
- `FCOM', `FCOMP', `FCOMPP', `FCOMI', `FCOMIP': Floating-Point Compare
- Section B.4.74
- `FCOS': Cosine
- Section B.4.75
- `FDECSTP': Decrement Floating-Point Stack Pointer
- Section B.4.76
- `FxDISI', `FxENI': Disable and Enable Floating-Point Interrupts
- Section B.4.77
- `FDIV', `FDIVP', `FDIVR', `FDIVRP': Floating-Point Division
- Section B.4.78
- `FEMMS': Faster Enter/Exit of the MMX or floating-point state
- Section B.4.79
- `FFREE': Flag Floating-Point Register as Unused
- Section B.4.80
- `FIADD': Floating-Point/Integer Addition
- Section B.4.81
- `FICOM', `FICOMP': Floating-Point/Integer Compare
- Section B.4.82
- `FIDIV', `FIDIVR': Floating-Point/Integer Division
- Section B.4.83
- `FILD', `FIST', `FISTP': Floating-Point/Integer Conversion
- Section B.4.84
- `FIMUL': Floating-Point/Integer Multiplication
- Section B.4.85
- `FINCSTP': Increment Floating-Point Stack Pointer
- Section B.4.86
- `FINIT', `FNINIT': Initialise Floating-Point Unit
- Section B.4.87
- `FISUB': Floating-Point/Integer Subtraction
- Section B.4.88
- `FLD': Floating-Point Load
- Section B.4.89
- `FLDxx': Floating-Point Load Constants
- Section B.4.90
- `FLDCW': Load Floating-Point Control Word
- Section B.4.91
- `FLDENV': Load Floating-Point Environment
- Section B.4.92
- `FMUL', `FMULP': Floating-Point Multiply
- Section B.4.93
- `FNOP': Floating-Point No Operation
- Section B.4.94
- `FPATAN', `FPTAN': Arctangent and Tangent
- Section B.4.95
- `FPREM', `FPREM1': Floating-Point Partial Remainder
- Section B.4.96
- `FRNDINT': Floating-Point Round to Integer
- Section B.4.97
- `FSAVE', `FRSTOR': Save/Restore Floating-Point State
- Section B.4.98
- `FSCALE': Scale Floating-Point Value by Power of Two
- Section B.4.99
- `FSETPM': Set Protected Mode
- Section B.4.100
- `FSIN', `FSINCOS': Sine and Cosine
- Section B.4.101
- `FSQRT': Floating-Point Square Root
- Section B.4.102
- `FST', `FSTP': Floating-Point Store
- Section B.4.103
- `FSTCW': Store Floating-Point Control Word
- Section B.4.104
- `FSTENV': Store Floating-Point Environment
- Section B.4.105
- `FSTSW': Store Floating-Point Status Word
- Section B.4.106
- `FSUB', `FSUBP', `FSUBR', `FSUBRP': Floating-Point Subtract
- Section B.4.107
- `FTST': Test `ST0' Against Zero
- Section B.4.108
- `FUCOMxx': Floating-Point Unordered Compare
- Section B.4.109
- `FXAM': Examine Class of Value in `ST0'
- Section B.4.110
- `FXCH': Floating-Point Exchange
- Section B.4.111
- `FXRSTOR': Restore `FP', `MMX' and `SSE' State
- Section B.4.112
- `FXSAVE': Store `FP', `MMX' and `SSE' State
- Section B.4.113
- `FXTRACT': Extract Exponent and Significand
- Section B.4.114
- `FYL2X', `FYL2XP1': Compute Y times Log2(X) or Log2(X+1)
- Section B.4.115
- `HLT': Halt Processor
- Section B.4.116
- `IBTS': Insert Bit String
- Section B.4.117
- `IDIV': Signed Integer Divide
- Section B.4.118
- `IMUL': Signed Integer Multiply
- Section B.4.119
- `IN': Input from I/O Port
- Section B.4.120
- `INC': Increment Integer
- Section B.4.121
- `INSB', `INSW', `INSD': Input String from I/O Port
- Section B.4.122
- `INT': Software Interrupt
- Section B.4.123
- `INT3', `INT1', `ICEBP', `INT01': Breakpoints
- Section B.4.124
- `INTO': Interrupt if Overflow
- Section B.4.125
- `INVD': Invalidate Internal Caches
- Section B.4.126
- `INVLPG': Invalidate TLB Entry
- Section B.4.127
- `IRET', `IRETW', `IRETD': Return from Interrupt
- Section B.4.128
- `Jcc': Conditional Branch
- Section B.4.129
- `JCXZ', `JECXZ': Jump if CX/ECX Zero
- Section B.4.130
- `JMP': Jump
- Section B.4.131
- `LAHF': Load AH from Flags
- Section B.4.132
- `LAR': Load Access Rights
- Section B.4.133
- `LDMXCSR': Load Streaming SIMD Extension Control/Status
- Section B.4.134
- `LDS', `LES', `LFS', `LGS', `LSS': Load Far Pointer
- Section B.4.135
- `LEA': Load Effective Address
- Section B.4.136
- `LEAVE': Destroy Stack Frame
- Section B.4.137
- `LFENCE': Load Fence
- Section B.4.138
- `LGDT', `LIDT', `LLDT': Load Descriptor Tables
- Section B.4.139
- `LMSW': Load/Store Machine Status Word
- Section B.4.140
- `LOADALL', `LOADALL286': Load Processor State
- Section B.4.141
- `LODSB', `LODSW', `LODSD': Load from String
- Section B.4.142
- `LOOP', `LOOPE', `LOOPZ', `LOOPNE', `LOOPNZ': Loop with Counter
- Section B.4.143
- `LSL': Load Segment Limit
- Section B.4.144
- `LTR': Load Task Register
- Section B.4.145
- `MASKMOVDQU': Byte Mask Write
- Section B.4.146
- `MASKMOVQ': Byte Mask Write
- Section B.4.147
- `MAXPD': Return Packed Double-Precision FP Maximum
- Section B.4.148
- `MAXPS': Return Packed Single-Precision FP Maximum
- Section B.4.149
- `MAXSD': Return Scalar Double-Precision FP Maximum
- Section B.4.150
- `MAXSS': Return Scalar Single-Precision FP Maximum
- Section B.4.151
- `MFENCE': Memory Fence
- Section B.4.152
- `MINPD': Return Packed Double-Precision FP Minimum
- Section B.4.153
- `MINPS': Return Packed Single-Precision FP Minimum
- Section B.4.154
- `MINSD': Return Scalar Double-Precision FP Minimum
- Section B.4.155
- `MINSS': Return Scalar Single-Precision FP Minimum
- Section B.4.156
- `MOV': Move Data
- Section B.4.157
- `MOVAPD': Move Aligned Packed Double-Precision FP Values
- Section B.4.158
- `MOVAPS': Move Aligned Packed Single-Precision FP Values
- Section B.4.159
- `MOVD': Move Doubleword to/from MMX Register
- Section B.4.160
- `MOVDQ2Q': Move Quadword from XMM to MMX register.
- Section B.4.161
- `MOVDQA': Move Aligned Double Quadword
- Section B.4.162
- `MOVDQU': Move Unaligned Double Quadword
- Section B.4.163
- `MOVHLPS': Move Packed Single-Precision FP High to Low
- Section B.4.164
- `MOVHPD': Move High Packed Double-Precision FP
- Section B.4.165
- `MOVHPS': Move High Packed Single-Precision FP
- Section B.4.166
- `MOVLHPS': Move Packed Single-Precision FP Low to High
- Section B.4.167
- `MOVLPD': Move Low Packed Double-Precision FP
- Section B.4.168
- `MOVLPS': Move Low Packed Single-Precision FP
- Section B.4.169
- `MOVMSKPD': Extract Packed Double-Precision FP Sign Mask
- Section B.4.170
- `MOVMSKPS': Extract Packed Single-Precision FP Sign Mask
- Section B.4.171
- `MOVNTDQ': Move Double Quadword Non Temporal
- Section B.4.172
- `MOVNTI': Move Doubleword Non Temporal
- Section B.4.173
- `MOVNTPD': Move Aligned Four Packed Single-Precision FP Values Non Temporal
- Section B.4.174
- `MOVNTPS': Move Aligned Four Packed Single-Precision FP Values Non Temporal
- Section B.4.175
- `MOVNTQ': Move Quadword Non Temporal
- Section B.4.176
- `MOVQ': Move Quadword to/from MMX Register
- Section B.4.177
- `MOVQ2DQ': Move Quadword from MMX to XMM register.
- Section B.4.178
- `MOVSB', `MOVSW', `MOVSD': Move String
- Section B.4.179
- `MOVSD': Move Scalar Double-Precision FP Value
- Section B.4.180
- `MOVSS': Move Scalar Single-Precision FP Value
- Section B.4.181
- `MOVSX', `MOVZX': Move Data with Sign or Zero Extend
- Section B.4.182
- `MOVUPD': Move Unaligned Packed Double-Precision FP Values
- Section B.4.183
- `MOVUPS': Move Unaligned Packed Single-Precision FP Values
- Section B.4.184
- `MUL': Unsigned Integer Multiply
- Section B.4.185
- `MULPD': Packed Single-FP Multiply
- Section B.4.186
- `MULPS': Packed Single-FP Multiply
- Section B.4.187
- `MULSD': Scalar Single-FP Multiply
- Section B.4.188
- `MULSS': Scalar Single-FP Multiply
- Section B.4.189
- `NEG', `NOT': Two's and One's Complement
- Section B.4.190
- `NOP': No Operation
- Section B.4.191
- `OR': Bitwise OR
- Section B.4.192
- `ORPD': Bit-wise Logical OR of Double-Precision FP Data
- Section B.4.193
- `ORPS': Bit-wise Logical OR of Single-Precision FP Data
- Section B.4.194
- `OUT': Output Data to I/O Port
- Section B.4.195
- `OUTSB', `OUTSW', `OUTSD': Output String to I/O Port
- Section B.4.196
- `PACKSSDW', `PACKSSWB', `PACKUSWB': Pack Data
- Section B.4.197
- `PADDB', `PADDW', `PADDD': Add Packed Integers
- Section B.4.198
- `PADDQ': Add Packed Quadword Integers
- Section B.4.199
- `PADDSB', `PADDSW': Add Packed Signed Integers With Saturation
- Section B.4.200
- `PADDSIW': MMX Packed Addition to Implicit Destination
- Section B.4.201
- `PADDUSB', `PADDUSW': Add Packed Unsigned Integers With Saturation
- Section B.4.202
- `PAND', `PANDN': MMX Bitwise AND and AND-NOT
- Section B.4.203
- `PAUSE': Spin Loop Hint
- Section B.4.204
- `PAVEB': MMX Packed Average
- Section B.4.205
- `PAVGB' `PAVGW': Average Packed Integers
- Section B.4.206
- `PAVGUSB': Average of unsigned packed 8-bit values
- Section B.4.207
- `PCMPxx': Compare Packed Integers.
- Section B.4.208
- `PDISTIB': MMX Packed Distance and Accumulate with Implied Register
- Section B.4.209
- `PEXTRW': Extract Word
- Section B.4.210
- `PF2ID': Packed Single-Precision FP to Integer Convert
- Section B.4.211
- `PF2IW': Packed Single-Precision FP to Integer Word Convert
- Section B.4.212
- `PFACC': Packed Single-Precision FP Accumulate
- Section B.4.213
- `PFADD': Packed Single-Precision FP Addition
- Section B.4.214
- `PFCMPxx': Packed Single-Precision FP Compare
- Section B.4.215
- `PFMAX': Packed Single-Precision FP Maximum
- Section B.4.216
- `PFMIN': Packed Single-Precision FP Minimum
- Section B.4.217
- `PFMUL': Packed Single-Precision FP Multiply
- Section B.4.218
- `PFNACC': Packed Single-Precision FP Negative Accumulate
- Section B.4.219
- `PFPNACC': Packed Single-Precision FP Mixed Accumulate
- Section B.4.220
- `PFRCP': Packed Single-Precision FP Reciprocal Approximation
- Section B.4.221
- `PFRCPIT1': Packed Single-Precision FP Reciprocal, First Iteration Step
- Section B.4.222
- `PFRCPIT2': Packed Single-Precision FP Reciprocal/ Reciprocal Square Root, Second Iteration Step
- Section B.4.223
- `PFRSQIT1': Packed Single-Precision FP Reciprocal Square Root, First Iteration Step
- Section B.4.224
- `PFRSQRT': Packed Single-Precision FP Reciprocal Square Root Approximation
- Section B.4.225
- `PFSUB': Packed Single-Precision FP Subtract
- Section B.4.226
- `PFSUBR': Packed Single-Precision FP Reverse Subtract
- Section B.4.227
- `PI2FD': Packed Doubleword Integer to Single-Precision FP Convert
- Section B.4.228
- `PF2IW': Packed Word Integer to Single-Precision FP Convert
- Section B.4.229
- `PINSRW': Insert Word
- Section B.4.230
- `PMACHRIW': Packed Multiply and Accumulate with Rounding
- Section B.4.231
- `PMADDWD': MMX Packed Multiply and Add
- Section B.4.232
- `PMAGW': MMX Packed Magnitude
- Section B.4.233
- `PMAXSW': Packed Signed Integer Word Maximum
- Section B.4.234
- `PMAXUB': Packed Unsigned Integer Byte Maximum
- Section B.4.235
- `PMINSW': Packed Signed Integer Word Minimum
- Section B.4.236
- `PMINUB': Packed Unsigned Integer Byte Minimum
- Section B.4.237
- `PMOVMSKB': Move Byte Mask To Integer
- Section B.4.238
- `PMULHRWC', `PMULHRIW': Multiply Packed 16-bit Integers With Rounding, and Store High Word
- Section B.4.239
- `PMULHRWA': Multiply Packed 16-bit Integers With Rounding, and Store High Word
- Section B.4.240
- `PMULHUW': Multiply Packed 16-bit Integers, and Store High Word
- Section B.4.241
- `PMULHW', `PMULLW': Multiply Packed 16-bit Integers, and Store
- Section B.4.242
- `PMULUDQ': Multiply Packed Unsigned 32-bit Integers, and Store.
- Section B.4.243
- `PMVccZB': MMX Packed Conditional Move
- Section B.4.244
- `POP': Pop Data from Stack
- Section B.4.245
- `POPAx': Pop All General-Purpose Registers
- Section B.4.246
- `POPFx': Pop Flags Register
- Section B.4.247
- `POR': MMX Bitwise OR
- Section B.4.248
- `PREFETCH': Prefetch Data Into Caches
- Section B.4.249
- `PREFETCHh': Prefetch Data Into Caches
- Section B.4.250
- `PSADBW': Packed Sum of Absolute Differences
- Section B.4.251
- `PSHUFD': Shuffle Packed Doublewords
- Section B.4.252
- `PSHUFHW': Shuffle Packed High Words
- Section B.4.253
- `PSHUFLW': Shuffle Packed Low Words
- Section B.4.254
- `PSHUFW': Shuffle Packed Words
- Section B.4.255
- `PSLLx': Packed Data Bit Shift Left Logical
- Section B.4.256
- `PSRAx': Packed Data Bit Shift Right Arithmetic
- Section B.4.257
- `PSRLx': Packed Data Bit Shift Right Logical
- Section B.4.258
- `PSUBx': Subtract Packed Integers
- Section B.4.259
- `PSUBSxx', `PSUBUSx': Subtract Packed Integers With Saturation
- Section B.4.260
- `PSUBSIW': MMX Packed Subtract with Saturation to Implied Destination
- Section B.4.261
- `PSWAPD': Swap Packed Data
- Section B.4.262
- `PUNPCKxxx': Unpack and Interleave Data
- Section B.4.263
- `PUSH': Push Data on Stack
- Section B.4.264
- `PUSHAx': Push All General-Purpose Registers
- Section B.4.265
- `PUSHFx': Push Flags Register
- Section B.4.266
- `PXOR': MMX Bitwise XOR
- Section B.4.267
- `RCL', `RCR': Bitwise Rotate through Carry Bit
- Section B.4.268
- `RCPPS': Packed Single-Precision FP Reciprocal
- Section B.4.269
- `RCPSS': Scalar Single-Precision FP Reciprocal
- Section B.4.270
- `RDMSR': Read Model-Specific Registers
- Section B.4.271
- `RDPMC': Read Performance-Monitoring Counters
- Section B.4.272
- `RDSHR': Read SMM Header Pointer Register
- Section B.4.273
- `RDTSC': Read Time-Stamp Counter
- Section B.4.274
- `RET', `RETF', `RETN': Return from Procedure Call
- Section B.4.275
- `ROL', `ROR': Bitwise Rotate
- Section B.4.276
- `RSDC': Restore Segment Register and Descriptor
- Section B.4.277
- `RSLDT': Restore Segment Register and Descriptor
- Section B.4.278
- `RSM': Resume from System-Management Mode
- Section B.4.279
- `RSQRTPS': Packed Single-Precision FP Square Root Reciprocal
- Section B.4.280
- `RSQRTSS': Scalar Single-Precision FP Square Root Reciprocal
- Section B.4.281
- `RSTS': Restore TSR and Descriptor
- Section B.4.282
- `SAHF': Store AH to Flags
- Section B.4.283
- `SAL', `SAR': Bitwise Arithmetic Shifts
- Section B.4.284
- `SALC': Set AL from Carry Flag
- Section B.4.285
- `SBB': Subtract with Borrow
- Section B.4.286
- `SCASB', `SCASW', `SCASD': Scan String
- Section B.4.287
- `SETcc': Set Register from Condition
- Section B.4.288
- `SFENCE': Store Fence
- Section B.4.289
- `SGDT', `SIDT', `SLDT': Store Descriptor Table Pointers
- Section B.4.290
- `SHL', `SHR': Bitwise Logical Shifts
- Section B.4.291
- `SHLD', `SHRD': Bitwise Double-Precision Shifts
- Section B.4.292
- `SHUFPD': Shuffle Packed Double-Precision FP Values
- Section B.4.293
- `SHUFPS': Shuffle Packed Single-Precision FP Values
- Section B.4.294
- `SMI': System Management Interrupt
- Section B.4.295
- `SMINT', `SMINTOLD': Software SMM Entry (CYRIX)
- Section B.4.296
- `SMSW': Store Machine Status Word
- Section B.4.297
- `SQRTPD': Packed Double-Precision FP Square Root
- Section B.4.298
- `SQRTPS': Packed Single-Precision FP Square Root
- Section B.4.299
- `SQRTSD': Scalar Double-Precision FP Square Root
- Section B.4.300
- `SQRTSS': Scalar Single-Precision FP Square Root
- Section B.4.301
- `STC', `STD', `STI': Set Flags
- Section B.4.302
- `STMXCSR': Store Streaming SIMD Extension Control/Status
- Section B.4.303
- `STOSB', `STOSW', `STOSD': Store Byte to String
- Section B.4.304
- `STR': Store Task Register
- Section B.4.305
- `SUB': Subtract Integers
- Section B.4.306
- `SUBPD': Packed Double-Precision FP Subtract
- Section B.4.307
- `SUBPS': Packed Single-Precision FP Subtract
- Section B.4.308
- `SUBSD': Scalar Single-FP Subtract
- Section B.4.309
- `SUBSS': Scalar Single-FP Subtract
- Section B.4.310
- `SVDC': Save Segment Register and Descriptor
- Section B.4.311
- `SVLDT': Save LDTR and Descriptor
- Section B.4.312
- `SVTS': Save TSR and Descriptor
- Section B.4.313
- `SYSCALL': Call Operating System
- Section B.4.314
- `SYSENTER': Fast System Call
- Section B.4.315
- `SYSEXIT': Fast Return From System Call
- Section B.4.316
- `SYSRET': Return From Operating System
- Section B.4.317
- `TEST': Test Bits (notional bitwise AND)
- Section B.4.318
- `UCOMISD': Unordered Scalar Double-Precision FP compare and set EFLAGS
- Section B.4.319
- `UCOMISS': Unordered Scalar Single-Precision FP compare and set EFLAGS
- Section B.4.320
- `UD0', `UD1', `UD2': Undefined Instruction
- Section B.4.321
- `UMOV': User Move Data
- Section B.4.322
- `UNPCKHPD': Unpack and Interleave High Packed Double-Precision FP Values
- Section B.4.323
- `UNPCKHPS': Unpack and Interleave High Packed Single-Precision FP Values
- Section B.4.324
- `UNPCKLPD': Unpack and Interleave Low Packed Double-Precision FP Data
- Section B.4.325
- `UNPCKLPS': Unpack and Interleave Low Packed Single-Precision FP Data
- Section B.4.326
- `VERR', `VERW': Verify Segment Readability/Writability
- Section B.4.327
- `WAIT': Wait for Floating-Point Processor
- Section B.4.328
- `WBINVD': Write Back and Invalidate Cache
- Section B.4.329
- `WRMSR': Write Model-Specific Registers
- Section B.4.330
- `WRSHR': Write SMM Header Pointer Register
- Section B.4.331
- `XADD': Exchange and Add
- Section B.4.332
- `XBTS': Extract Bit String
- Section B.4.333
- `XCHG': Exchange
- Section B.4.334
- `XLATB': Translate Byte in Lookup Table
- Section B.4.335
- `XOR': Bitwise Exclusive OR
- Section B.4.336
- `XORPD': Bitwise Logical XOR of Double-Precision FP Values
- Section B.4.337
- `XORPS': Bitwise Logical XOR of Single-Precision FP Values
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