github.com/euank/go@v0.0.0-20160829210321-495514729181/src/cmd/compile/internal/x86/prog.go (about) 1 // Copyright 2013 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package x86 6 7 import ( 8 "cmd/compile/internal/gc" 9 "cmd/internal/obj" 10 "cmd/internal/obj/x86" 11 ) 12 13 var ( 14 AX = RtoB(x86.REG_AX) 15 BX = RtoB(x86.REG_BX) 16 CX = RtoB(x86.REG_CX) 17 DX = RtoB(x86.REG_DX) 18 DI = RtoB(x86.REG_DI) 19 SI = RtoB(x86.REG_SI) 20 LeftRdwr uint32 = gc.LeftRead | gc.LeftWrite 21 RightRdwr uint32 = gc.RightRead | gc.RightWrite 22 ) 23 24 // This table gives the basic information about instruction 25 // generated by the compiler and processed in the optimizer. 26 // See opt.h for bit definitions. 27 // 28 // Instructions not generated need not be listed. 29 // As an exception to that rule, we typically write down all the 30 // size variants of an operation even if we just use a subset. 31 // 32 // The table is formatted for 8-space tabs. 33 var progtable = [x86.ALAST & obj.AMask]obj.ProgInfo{ 34 obj.ATYPE: {Flags: gc.Pseudo | gc.Skip}, 35 obj.ATEXT: {Flags: gc.Pseudo}, 36 obj.AFUNCDATA: {Flags: gc.Pseudo}, 37 obj.APCDATA: {Flags: gc.Pseudo}, 38 obj.AUNDEF: {Flags: gc.Break}, 39 obj.AUSEFIELD: {Flags: gc.OK}, 40 obj.ACHECKNIL: {Flags: gc.LeftRead}, 41 obj.AVARDEF: {Flags: gc.Pseudo | gc.RightWrite}, 42 obj.AVARKILL: {Flags: gc.Pseudo | gc.RightWrite}, 43 obj.AVARLIVE: {Flags: gc.Pseudo | gc.LeftRead}, 44 45 // NOP is an internal no-op that also stands 46 // for USED and SET annotations, not the Intel opcode. 47 obj.ANOP: {Flags: gc.LeftRead | gc.RightWrite}, 48 x86.AADCL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, 49 x86.AADCW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, 50 x86.AADDB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, 51 x86.AADDL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, 52 x86.AADDW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, 53 x86.AADDSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, 54 x86.AADDSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, 55 x86.AANDB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, 56 x86.AANDL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, 57 x86.AANDW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, 58 obj.ACALL: {Flags: gc.RightAddr | gc.Call | gc.KillCarry}, 59 x86.ACDQ & obj.AMask: {Flags: gc.OK, Reguse: AX, Regset: AX | DX}, 60 x86.ACWD & obj.AMask: {Flags: gc.OK, Reguse: AX, Regset: AX | DX}, 61 x86.ACLD & obj.AMask: {Flags: gc.OK}, 62 x86.ASTD & obj.AMask: {Flags: gc.OK}, 63 x86.ACMPB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry}, 64 x86.ACMPL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry}, 65 x86.ACMPW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry}, 66 x86.ACOMISD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead | gc.SetCarry}, 67 x86.ACOMISS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead | gc.SetCarry}, 68 x86.ACVTSD2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 69 x86.ACVTSD2SS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 70 x86.ACVTSL2SD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 71 x86.ACVTSL2SS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, 72 x86.ACVTSS2SD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, 73 x86.ACVTSS2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 74 x86.ACVTTSD2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 75 x86.ACVTTSS2SL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 76 x86.ADECB & obj.AMask: {Flags: gc.SizeB | RightRdwr}, 77 x86.ADECL & obj.AMask: {Flags: gc.SizeL | RightRdwr}, 78 x86.ADECW & obj.AMask: {Flags: gc.SizeW | RightRdwr}, 79 x86.ADIVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, 80 x86.ADIVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, 81 x86.ADIVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, 82 x86.ADIVSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, 83 x86.ADIVSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, 84 x86.AFLDCW & obj.AMask: {Flags: gc.SizeW | gc.LeftAddr}, 85 x86.AFSTCW & obj.AMask: {Flags: gc.SizeW | gc.RightAddr}, 86 x86.AFSTSW & obj.AMask: {Flags: gc.SizeW | gc.RightAddr | gc.RightWrite}, 87 x86.AFADDD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 88 x86.AFADDDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 89 x86.AFADDF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 90 x86.AFCOMD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead}, 91 x86.AFCOMDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead}, 92 x86.AFCOMDPP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightRead}, 93 x86.AFCOMF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead}, 94 x86.AFCOMFP & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead}, 95 // NOTE(khr): don't use FUCOMI* instructions, not available 96 // on Pentium MMX. See issue 13923. 97 //x86.AFUCOMIP&obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightRead}, 98 x86.AFUCOMP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead}, 99 x86.AFUCOMPP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead}, 100 x86.AFCHS & obj.AMask: {Flags: gc.SizeD | RightRdwr}, // also SizeF 101 102 x86.AFDIVDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 103 x86.AFDIVF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 104 x86.AFDIVD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 105 x86.AFDIVRDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 106 x86.AFDIVRF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 107 x86.AFDIVRD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 108 x86.AFXCHD & obj.AMask: {Flags: gc.SizeD | LeftRdwr | RightRdwr}, 109 x86.AFSUBD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 110 x86.AFSUBDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 111 x86.AFSUBF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 112 x86.AFSUBRD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 113 x86.AFSUBRDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 114 x86.AFSUBRF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 115 x86.AFMOVD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | gc.RightWrite}, 116 x86.AFMOVF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | gc.RightWrite}, 117 x86.AFMOVL & obj.AMask: {Flags: gc.SizeL | gc.LeftAddr | gc.RightWrite}, 118 x86.AFMOVW & obj.AMask: {Flags: gc.SizeW | gc.LeftAddr | gc.RightWrite}, 119 x86.AFMOVV & obj.AMask: {Flags: gc.SizeQ | gc.LeftAddr | gc.RightWrite}, 120 121 // These instructions are marked as RightAddr 122 // so that the register optimizer does not try to replace the 123 // memory references with integer register references. 124 // But they do not use the previous value at the address, so 125 // we also mark them RightWrite. 126 x86.AFMOVDP & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.RightAddr}, 127 x86.AFMOVFP & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.RightAddr}, 128 x86.AFMOVLP & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.RightAddr}, 129 x86.AFMOVWP & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.RightAddr}, 130 x86.AFMOVVP & obj.AMask: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.RightAddr}, 131 x86.AFMULD & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 132 x86.AFMULDP & obj.AMask: {Flags: gc.SizeD | gc.LeftAddr | RightRdwr}, 133 x86.AFMULF & obj.AMask: {Flags: gc.SizeF | gc.LeftAddr | RightRdwr}, 134 x86.AIDIVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, 135 x86.AIDIVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, 136 x86.AIDIVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, 137 x86.AIMULB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, 138 x86.AIMULL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.ImulAXDX | gc.SetCarry}, 139 x86.AIMULW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.ImulAXDX | gc.SetCarry}, 140 x86.AINCB & obj.AMask: {Flags: gc.SizeB | RightRdwr}, 141 x86.AINCL & obj.AMask: {Flags: gc.SizeL | RightRdwr}, 142 x86.AINCW & obj.AMask: {Flags: gc.SizeW | RightRdwr}, 143 x86.AJCC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 144 x86.AJCS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 145 x86.AJEQ & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 146 x86.AJGE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 147 x86.AJGT & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 148 x86.AJHI & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 149 x86.AJLE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 150 x86.AJLS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 151 x86.AJLT & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 152 x86.AJMI & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 153 x86.AJNE & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 154 x86.AJOC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 155 x86.AJOS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 156 x86.AJPC & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 157 x86.AJPL & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 158 x86.AJPS & obj.AMask: {Flags: gc.Cjmp | gc.UseCarry}, 159 obj.AJMP: {Flags: gc.Jump | gc.Break | gc.KillCarry}, 160 x86.ALEAW & obj.AMask: {Flags: gc.LeftAddr | gc.RightWrite}, 161 x86.ALEAL & obj.AMask: {Flags: gc.LeftAddr | gc.RightWrite}, 162 x86.AMOVBLSX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 163 x86.AMOVBLZX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 164 x86.AMOVBWSX & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv}, 165 x86.AMOVBWZX & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv}, 166 x86.AMOVWLSX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 167 x86.AMOVWLZX & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, 168 x86.AMOVB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move}, 169 x86.AMOVL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, 170 x86.AMOVW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move}, 171 x86.AMOVSB & obj.AMask: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, 172 x86.AMOVSL & obj.AMask: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, 173 x86.AMOVSW & obj.AMask: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, 174 obj.ADUFFCOPY: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI | CX}, 175 x86.AMOVSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move}, 176 x86.AMOVSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move}, 177 178 // We use MOVAPD as a faster synonym for MOVSD. 179 x86.AMOVAPD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move}, 180 x86.AMULB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, 181 x86.AMULL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX | DX}, 182 x86.AMULW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX | DX}, 183 x86.AMULSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, 184 x86.AMULSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, 185 x86.ANEGB & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.SetCarry}, 186 x86.ANEGL & obj.AMask: {Flags: gc.SizeL | RightRdwr | gc.SetCarry}, 187 x86.ANEGW & obj.AMask: {Flags: gc.SizeW | RightRdwr | gc.SetCarry}, 188 x86.ANOTB & obj.AMask: {Flags: gc.SizeB | RightRdwr}, 189 x86.ANOTL & obj.AMask: {Flags: gc.SizeL | RightRdwr}, 190 x86.ANOTW & obj.AMask: {Flags: gc.SizeW | RightRdwr}, 191 x86.AORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, 192 x86.AORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, 193 x86.AORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, 194 x86.APOPL & obj.AMask: {Flags: gc.SizeL | gc.RightWrite}, 195 x86.APUSHL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead}, 196 x86.APXOR & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, 197 x86.ARCLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 198 x86.ARCLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 199 x86.ARCLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 200 x86.ARCRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 201 x86.ARCRL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 202 x86.ARCRW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, 203 x86.AREP & obj.AMask: {Flags: gc.OK, Reguse: CX, Regset: CX}, 204 x86.AREPN & obj.AMask: {Flags: gc.OK, Reguse: CX, Regset: CX}, 205 obj.ARET: {Flags: gc.Break | gc.KillCarry}, 206 x86.AROLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 207 x86.AROLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 208 x86.AROLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 209 x86.ARORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 210 x86.ARORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 211 x86.ARORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 212 x86.ASAHF & obj.AMask: {Flags: gc.OK, Reguse: AX, Regset: AX}, 213 x86.ASALB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 214 x86.ASALL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 215 x86.ASALW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 216 x86.ASARB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 217 x86.ASARL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 218 x86.ASARW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 219 x86.ASBBB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, 220 x86.ASBBL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, 221 x86.ASBBW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, 222 x86.ASETCC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 223 x86.ASETCS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 224 x86.ASETEQ & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 225 x86.ASETGE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 226 x86.ASETGT & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 227 x86.ASETHI & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 228 x86.ASETLE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 229 x86.ASETLS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 230 x86.ASETLT & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 231 x86.ASETMI & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 232 x86.ASETNE & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 233 x86.ASETOC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 234 x86.ASETOS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 235 x86.ASETPC & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 236 x86.ASETPL & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 237 x86.ASETPS & obj.AMask: {Flags: gc.SizeB | RightRdwr | gc.UseCarry}, 238 x86.ASHLB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 239 x86.ASHLL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 240 x86.ASHLW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 241 x86.ASHRB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 242 x86.ASHRL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 243 x86.ASHRW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, 244 x86.ASTOSB & obj.AMask: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, 245 x86.ASTOSL & obj.AMask: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, 246 x86.ASTOSW & obj.AMask: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, 247 obj.ADUFFZERO: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, 248 x86.ASUBB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, 249 x86.ASUBL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, 250 x86.ASUBW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, 251 x86.ASUBSD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, 252 x86.ASUBSS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, 253 x86.ATESTB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry}, 254 x86.ATESTL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry}, 255 x86.ATESTW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry}, 256 x86.AUCOMISD & obj.AMask: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead}, 257 x86.AUCOMISS & obj.AMask: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead}, 258 x86.AXCHGB & obj.AMask: {Flags: gc.SizeB | LeftRdwr | RightRdwr}, 259 x86.AXCHGL & obj.AMask: {Flags: gc.SizeL | LeftRdwr | RightRdwr}, 260 x86.AXCHGW & obj.AMask: {Flags: gc.SizeW | LeftRdwr | RightRdwr}, 261 x86.AXORB & obj.AMask: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, 262 x86.AXORL & obj.AMask: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, 263 x86.AXORW & obj.AMask: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, 264 } 265 266 func proginfo(p *obj.Prog) { 267 info := &p.Info 268 *info = progtable[p.As&obj.AMask] 269 if info.Flags == 0 { 270 gc.Fatalf("unknown instruction %v", p) 271 } 272 273 if (info.Flags&gc.ShiftCX != 0) && p.From.Type != obj.TYPE_CONST { 274 info.Reguse |= CX 275 } 276 277 if info.Flags&gc.ImulAXDX != 0 { 278 if p.To.Type == obj.TYPE_NONE { 279 info.Reguse |= AX 280 info.Regset |= AX | DX 281 } else { 282 info.Flags |= RightRdwr 283 } 284 } 285 286 // Addressing makes some registers used. 287 if p.From.Type == obj.TYPE_MEM && p.From.Name == obj.NAME_NONE { 288 info.Regindex |= RtoB(int(p.From.Reg)) 289 } 290 if p.From.Index != x86.REG_NONE { 291 info.Regindex |= RtoB(int(p.From.Index)) 292 } 293 if p.To.Type == obj.TYPE_MEM && p.To.Name == obj.NAME_NONE { 294 info.Regindex |= RtoB(int(p.To.Reg)) 295 } 296 if p.To.Index != x86.REG_NONE { 297 info.Regindex |= RtoB(int(p.To.Index)) 298 } 299 }