| // Copyright 2013 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package x86 |
| |
| import ( |
| "cmd/compile/internal/gc" |
| "cmd/internal/obj" |
| "cmd/internal/obj/x86" |
| ) |
| |
| var ( |
| AX = RtoB(x86.REG_AX) |
| BX = RtoB(x86.REG_BX) |
| CX = RtoB(x86.REG_CX) |
| DX = RtoB(x86.REG_DX) |
| DI = RtoB(x86.REG_DI) |
| SI = RtoB(x86.REG_SI) |
| LeftRdwr uint32 = gc.LeftRead | gc.LeftWrite |
| RightRdwr uint32 = gc.RightRead | gc.RightWrite |
| ) |
| |
| // This table gives the basic information about instruction |
| // generated by the compiler and processed in the optimizer. |
| // See opt.h for bit definitions. |
| // |
| // Instructions not generated need not be listed. |
| // As an exception to that rule, we typically write down all the |
| // size variants of an operation even if we just use a subset. |
| // |
| // The table is formatted for 8-space tabs. |
| var progtable = [x86.ALAST]obj.ProgInfo{ |
| obj.ATYPE: {gc.Pseudo | gc.Skip, 0, 0, 0}, |
| obj.ATEXT: {gc.Pseudo, 0, 0, 0}, |
| obj.AFUNCDATA: {gc.Pseudo, 0, 0, 0}, |
| obj.APCDATA: {gc.Pseudo, 0, 0, 0}, |
| obj.AUNDEF: {gc.Break, 0, 0, 0}, |
| obj.AUSEFIELD: {gc.OK, 0, 0, 0}, |
| obj.ACHECKNIL: {gc.LeftRead, 0, 0, 0}, |
| obj.AVARDEF: {gc.Pseudo | gc.RightWrite, 0, 0, 0}, |
| obj.AVARKILL: {gc.Pseudo | gc.RightWrite, 0, 0, 0}, |
| |
| // NOP is an internal no-op that also stands |
| // for USED and SET annotations, not the Intel opcode. |
| obj.ANOP: {gc.LeftRead | gc.RightWrite, 0, 0, 0}, |
| x86.AADCL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.AADCW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.AADDB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AADDL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AADDW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AADDSD: {gc.SizeD | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.AADDSS: {gc.SizeF | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.AANDB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AANDL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AANDW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| obj.ACALL: {gc.RightAddr | gc.Call | gc.KillCarry, 0, 0, 0}, |
| x86.ACDQ: {gc.OK, AX, AX | DX, 0}, |
| x86.ACWD: {gc.OK, AX, AX | DX, 0}, |
| x86.ACLD: {gc.OK, 0, 0, 0}, |
| x86.ASTD: {gc.OK, 0, 0, 0}, |
| x86.ACMPB: {gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ACMPL: {gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ACMPW: {gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ACOMISD: {gc.SizeD | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ACOMISS: {gc.SizeF | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ACVTSD2SL: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTSD2SS: {gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTSL2SD: {gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTSL2SS: {gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTSS2SD: {gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTSS2SL: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTTSD2SL: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ACVTTSS2SL: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.ADECB: {gc.SizeB | RightRdwr, 0, 0, 0}, |
| x86.ADECL: {gc.SizeL | RightRdwr, 0, 0, 0}, |
| x86.ADECW: {gc.SizeW | RightRdwr, 0, 0, 0}, |
| x86.ADIVB: {gc.SizeB | gc.LeftRead | gc.SetCarry, AX, AX, 0}, |
| x86.ADIVL: {gc.SizeL | gc.LeftRead | gc.SetCarry, AX | DX, AX | DX, 0}, |
| x86.ADIVW: {gc.SizeW | gc.LeftRead | gc.SetCarry, AX | DX, AX | DX, 0}, |
| x86.ADIVSD: {gc.SizeD | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.ADIVSS: {gc.SizeF | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.AFLDCW: {gc.SizeW | gc.LeftAddr, 0, 0, 0}, |
| x86.AFSTCW: {gc.SizeW | gc.RightAddr, 0, 0, 0}, |
| x86.AFSTSW: {gc.SizeW | gc.RightAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AFADDD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFADDDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFADDF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFCOMD: {gc.SizeD | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFCOMDP: {gc.SizeD | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFCOMDPP: {gc.SizeD | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFCOMF: {gc.SizeF | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFCOMFP: {gc.SizeF | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFUCOMIP: {gc.SizeF | gc.LeftAddr | gc.RightRead, 0, 0, 0}, |
| x86.AFCHS: {gc.SizeD | RightRdwr, 0, 0, 0}, // also SizeF |
| |
| x86.AFDIVDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFDIVF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFDIVD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFDIVRDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFDIVRF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFDIVRD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFXCHD: {gc.SizeD | LeftRdwr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBRD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBRDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFSUBRF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFMOVD: {gc.SizeD | gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AFMOVF: {gc.SizeF | gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AFMOVL: {gc.SizeL | gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AFMOVW: {gc.SizeW | gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AFMOVV: {gc.SizeQ | gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| |
| // These instructions are marked as RightAddr |
| // so that the register optimizer does not try to replace the |
| // memory references with integer register references. |
| // But they do not use the previous value at the address, so |
| // we also mark them RightWrite. |
| x86.AFMOVDP: {gc.SizeD | gc.LeftRead | gc.RightWrite | gc.RightAddr, 0, 0, 0}, |
| x86.AFMOVFP: {gc.SizeF | gc.LeftRead | gc.RightWrite | gc.RightAddr, 0, 0, 0}, |
| x86.AFMOVLP: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.RightAddr, 0, 0, 0}, |
| x86.AFMOVWP: {gc.SizeW | gc.LeftRead | gc.RightWrite | gc.RightAddr, 0, 0, 0}, |
| x86.AFMOVVP: {gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.RightAddr, 0, 0, 0}, |
| x86.AFMULD: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFMULDP: {gc.SizeD | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AFMULF: {gc.SizeF | gc.LeftAddr | RightRdwr, 0, 0, 0}, |
| x86.AIDIVB: {gc.SizeB | gc.LeftRead | gc.SetCarry, AX, AX, 0}, |
| x86.AIDIVL: {gc.SizeL | gc.LeftRead | gc.SetCarry, AX | DX, AX | DX, 0}, |
| x86.AIDIVW: {gc.SizeW | gc.LeftRead | gc.SetCarry, AX | DX, AX | DX, 0}, |
| x86.AIMULB: {gc.SizeB | gc.LeftRead | gc.SetCarry, AX, AX, 0}, |
| x86.AIMULL: {gc.SizeL | gc.LeftRead | gc.ImulAXDX | gc.SetCarry, 0, 0, 0}, |
| x86.AIMULW: {gc.SizeW | gc.LeftRead | gc.ImulAXDX | gc.SetCarry, 0, 0, 0}, |
| x86.AINCB: {gc.SizeB | RightRdwr, 0, 0, 0}, |
| x86.AINCL: {gc.SizeL | RightRdwr, 0, 0, 0}, |
| x86.AINCW: {gc.SizeW | RightRdwr, 0, 0, 0}, |
| x86.AJCC: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJCS: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJEQ: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJGE: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJGT: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJHI: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJLE: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJLS: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJLT: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJMI: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJNE: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJOC: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJOS: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJPC: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJPL: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| x86.AJPS: {gc.Cjmp | gc.UseCarry, 0, 0, 0}, |
| obj.AJMP: {gc.Jump | gc.Break | gc.KillCarry, 0, 0, 0}, |
| x86.ALEAL: {gc.LeftAddr | gc.RightWrite, 0, 0, 0}, |
| x86.AMOVBLSX: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVBLZX: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVBWSX: {gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVBWZX: {gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVWLSX: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVWLZX: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0}, |
| x86.AMOVB: {gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| x86.AMOVL: {gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| x86.AMOVW: {gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| x86.AMOVSB: {gc.OK, DI | SI, DI | SI, 0}, |
| x86.AMOVSL: {gc.OK, DI | SI, DI | SI, 0}, |
| x86.AMOVSW: {gc.OK, DI | SI, DI | SI, 0}, |
| obj.ADUFFCOPY: {gc.OK, DI | SI, DI | SI | CX, 0}, |
| x86.AMOVSD: {gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| x86.AMOVSS: {gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| |
| // We use MOVAPD as a faster synonym for MOVSD. |
| x86.AMOVAPD: {gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0}, |
| x86.AMULB: {gc.SizeB | gc.LeftRead | gc.SetCarry, AX, AX, 0}, |
| x86.AMULL: {gc.SizeL | gc.LeftRead | gc.SetCarry, AX, AX | DX, 0}, |
| x86.AMULW: {gc.SizeW | gc.LeftRead | gc.SetCarry, AX, AX | DX, 0}, |
| x86.AMULSD: {gc.SizeD | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.AMULSS: {gc.SizeF | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.ANEGB: {gc.SizeB | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ANEGL: {gc.SizeL | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ANEGW: {gc.SizeW | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ANOTB: {gc.SizeB | RightRdwr, 0, 0, 0}, |
| x86.ANOTL: {gc.SizeL | RightRdwr, 0, 0, 0}, |
| x86.ANOTW: {gc.SizeW | RightRdwr, 0, 0, 0}, |
| x86.AORB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AORL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AORW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.APOPL: {gc.SizeL | gc.RightWrite, 0, 0, 0}, |
| x86.APUSHL: {gc.SizeL | gc.LeftRead, 0, 0, 0}, |
| x86.ARCLB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ARCLL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ARCLW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ARCRB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ARCRL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ARCRW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.AREP: {gc.OK, CX, CX, 0}, |
| x86.AREPN: {gc.OK, CX, CX, 0}, |
| obj.ARET: {gc.Break | gc.KillCarry, 0, 0, 0}, |
| x86.AROLB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.AROLL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.AROLW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ARORB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ARORL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ARORW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASAHF: {gc.OK, AX, AX, 0}, |
| x86.ASALB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASALL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASALW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASARB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASARL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASARW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASBBB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ASBBL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ASBBW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry, 0, 0, 0}, |
| x86.ASETCC: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETCS: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETEQ: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETGE: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETGT: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETHI: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETLE: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETLS: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETLT: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETMI: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETNE: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETOC: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETOS: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETPC: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETPL: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASETPS: {gc.SizeB | RightRdwr | gc.UseCarry, 0, 0, 0}, |
| x86.ASHLB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASHLL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASHLW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASHRB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASHRL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASHRW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry, 0, 0, 0}, |
| x86.ASTOSB: {gc.OK, AX | DI, DI, 0}, |
| x86.ASTOSL: {gc.OK, AX | DI, DI, 0}, |
| x86.ASTOSW: {gc.OK, AX | DI, DI, 0}, |
| obj.ADUFFZERO: {gc.OK, AX | DI, DI, 0}, |
| x86.ASUBB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ASUBL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ASUBW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.ASUBSD: {gc.SizeD | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.ASUBSS: {gc.SizeF | gc.LeftRead | RightRdwr, 0, 0, 0}, |
| x86.ATESTB: {gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ATESTL: {gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.ATESTW: {gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry, 0, 0, 0}, |
| x86.AUCOMISD: {gc.SizeD | gc.LeftRead | gc.RightRead, 0, 0, 0}, |
| x86.AUCOMISS: {gc.SizeF | gc.LeftRead | gc.RightRead, 0, 0, 0}, |
| x86.AXCHGB: {gc.SizeB | LeftRdwr | RightRdwr, 0, 0, 0}, |
| x86.AXCHGL: {gc.SizeL | LeftRdwr | RightRdwr, 0, 0, 0}, |
| x86.AXCHGW: {gc.SizeW | LeftRdwr | RightRdwr, 0, 0, 0}, |
| x86.AXORB: {gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AXORL: {gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| x86.AXORW: {gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry, 0, 0, 0}, |
| } |
| |
| func proginfo(p *obj.Prog) { |
| info := &p.Info |
| *info = progtable[p.As] |
| if info.Flags == 0 { |
| gc.Fatal("unknown instruction %v", p) |
| } |
| |
| if (info.Flags&gc.ShiftCX != 0) && p.From.Type != obj.TYPE_CONST { |
| info.Reguse |= CX |
| } |
| |
| if info.Flags&gc.ImulAXDX != 0 { |
| if p.To.Type == obj.TYPE_NONE { |
| info.Reguse |= AX |
| info.Regset |= AX | DX |
| } else { |
| info.Flags |= RightRdwr |
| } |
| } |
| |
| // Addressing makes some registers used. |
| if p.From.Type == obj.TYPE_MEM && p.From.Name == obj.NAME_NONE { |
| info.Regindex |= RtoB(int(p.From.Reg)) |
| } |
| if p.From.Index != x86.REG_NONE { |
| info.Regindex |= RtoB(int(p.From.Index)) |
| } |
| if p.To.Type == obj.TYPE_MEM && p.To.Name == obj.NAME_NONE { |
| info.Regindex |= RtoB(int(p.To.Reg)) |
| } |
| if p.To.Index != x86.REG_NONE { |
| info.Regindex |= RtoB(int(p.To.Index)) |
| } |
| } |
