| // 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 amd64 |
| |
| import ( |
| "cmd/compile/internal/gc" |
| "cmd/internal/obj" |
| "cmd/internal/obj/x86" |
| ) |
| |
| const ( |
| 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: {Flags: gc.Pseudo | gc.Skip}, |
| obj.ATEXT: {Flags: gc.Pseudo}, |
| obj.AFUNCDATA: {Flags: gc.Pseudo}, |
| obj.APCDATA: {Flags: gc.Pseudo}, |
| obj.AUNDEF: {Flags: gc.Break}, |
| obj.AUSEFIELD: {Flags: gc.OK}, |
| obj.ACHECKNIL: {Flags: gc.LeftRead}, |
| obj.AVARDEF: {Flags: gc.Pseudo | gc.RightWrite}, |
| obj.AVARKILL: {Flags: gc.Pseudo | gc.RightWrite}, |
| |
| // NOP is an internal no-op that also stands |
| // for USED and SET annotations, not the Intel opcode. |
| obj.ANOP: {Flags: gc.LeftRead | gc.RightWrite}, |
| x86.AADCL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.AADCQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.AADCW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.AADDB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AADDL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AADDW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AADDQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AADDSD: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, |
| x86.AADDSS: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, |
| x86.AANDB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AANDL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AANDQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AANDW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| obj.ACALL: {Flags: gc.RightAddr | gc.Call | gc.KillCarry}, |
| x86.ACDQ: {Flags: gc.OK, Reguse: AX, Regset: AX | DX}, |
| x86.ACQO: {Flags: gc.OK, Reguse: AX, Regset: AX | DX}, |
| x86.ACWD: {Flags: gc.OK, Reguse: AX, Regset: AX | DX}, |
| x86.ACLD: {Flags: gc.OK}, |
| x86.ASTD: {Flags: gc.OK}, |
| x86.ACMPB: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACMPL: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACMPQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACMPW: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACOMISD: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACOMISS: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ACVTSD2SL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSD2SQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSD2SS: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSL2SD: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSL2SS: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSQ2SD: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSQ2SS: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSS2SD: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSS2SL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTSS2SQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTTSD2SL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTTSD2SQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTTSS2SL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ACVTTSS2SQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.ADECB: {Flags: gc.SizeB | RightRdwr}, |
| x86.ADECL: {Flags: gc.SizeL | RightRdwr}, |
| x86.ADECQ: {Flags: gc.SizeQ | RightRdwr}, |
| x86.ADECW: {Flags: gc.SizeW | RightRdwr}, |
| x86.ADIVB: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, |
| x86.ADIVL: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.ADIVQ: {Flags: gc.SizeQ | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.ADIVW: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.ADIVSD: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, |
| x86.ADIVSS: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, |
| x86.AIDIVB: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, |
| x86.AIDIVL: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.AIDIVQ: {Flags: gc.SizeQ | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.AIDIVW: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX | DX, Regset: AX | DX}, |
| x86.AIMULB: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, |
| x86.AIMULL: {Flags: gc.SizeL | gc.LeftRead | gc.ImulAXDX | gc.SetCarry}, |
| x86.AIMULQ: {Flags: gc.SizeQ | gc.LeftRead | gc.ImulAXDX | gc.SetCarry}, |
| x86.AIMULW: {Flags: gc.SizeW | gc.LeftRead | gc.ImulAXDX | gc.SetCarry}, |
| x86.AINCB: {Flags: gc.SizeB | RightRdwr}, |
| x86.AINCL: {Flags: gc.SizeL | RightRdwr}, |
| x86.AINCQ: {Flags: gc.SizeQ | RightRdwr}, |
| x86.AINCW: {Flags: gc.SizeW | RightRdwr}, |
| x86.AJCC: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJCS: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJEQ: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJGE: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJGT: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJHI: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJLE: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJLS: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJLT: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJMI: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJNE: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJOC: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJOS: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJPC: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJPL: {Flags: gc.Cjmp | gc.UseCarry}, |
| x86.AJPS: {Flags: gc.Cjmp | gc.UseCarry}, |
| obj.AJMP: {Flags: gc.Jump | gc.Break | gc.KillCarry}, |
| x86.ALEAL: {Flags: gc.LeftAddr | gc.RightWrite}, |
| x86.ALEAQ: {Flags: gc.LeftAddr | gc.RightWrite}, |
| x86.AMOVBLSX: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVBLZX: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVBQSX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVBQZX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVBWSX: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVBWZX: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVLQSX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVLQZX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVWLSX: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVWLZX: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVWQSX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVWQZX: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVQL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Conv}, |
| x86.AMOVB: {Flags: gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMOVL: {Flags: gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMOVQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMOVW: {Flags: gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMOVSB: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, |
| x86.AMOVSL: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, |
| x86.AMOVSQ: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, |
| x86.AMOVSW: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI}, |
| obj.ADUFFCOPY: {Flags: gc.OK, Reguse: DI | SI, Regset: DI | SI | CX}, |
| x86.AMOVSD: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMOVSS: {Flags: gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move}, |
| |
| // We use MOVAPD as a faster synonym for MOVSD. |
| x86.AMOVAPD: {Flags: gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move}, |
| x86.AMULB: {Flags: gc.SizeB | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX}, |
| x86.AMULL: {Flags: gc.SizeL | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX | DX}, |
| x86.AMULQ: {Flags: gc.SizeQ | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX | DX}, |
| x86.AMULW: {Flags: gc.SizeW | gc.LeftRead | gc.SetCarry, Reguse: AX, Regset: AX | DX}, |
| x86.AMULSD: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, |
| x86.AMULSS: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, |
| x86.ANEGB: {Flags: gc.SizeB | RightRdwr | gc.SetCarry}, |
| x86.ANEGL: {Flags: gc.SizeL | RightRdwr | gc.SetCarry}, |
| x86.ANEGQ: {Flags: gc.SizeQ | RightRdwr | gc.SetCarry}, |
| x86.ANEGW: {Flags: gc.SizeW | RightRdwr | gc.SetCarry}, |
| x86.ANOTB: {Flags: gc.SizeB | RightRdwr}, |
| x86.ANOTL: {Flags: gc.SizeL | RightRdwr}, |
| x86.ANOTQ: {Flags: gc.SizeQ | RightRdwr}, |
| x86.ANOTW: {Flags: gc.SizeW | RightRdwr}, |
| x86.AORB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AORL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AORQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AORW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.APOPQ: {Flags: gc.SizeQ | gc.RightWrite}, |
| x86.APUSHQ: {Flags: gc.SizeQ | gc.LeftRead}, |
| x86.ARCLB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCLL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCLQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCLW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCRB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCRL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCRQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.ARCRW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry | gc.UseCarry}, |
| x86.AREP: {Flags: gc.OK, Reguse: CX, Regset: CX}, |
| x86.AREPN: {Flags: gc.OK, Reguse: CX, Regset: CX}, |
| obj.ARET: {Flags: gc.Break | gc.KillCarry}, |
| x86.AROLB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.AROLL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.AROLQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.AROLW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ARORB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ARORL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ARORQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ARORW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASALB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASALL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASALQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASALW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASARB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASARL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASARQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASARW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASBBB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.ASBBL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.ASBBQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.ASBBW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry | gc.UseCarry}, |
| x86.ASETCC: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETCS: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETEQ: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETGE: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETGT: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETHI: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETLE: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETLS: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETLT: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETMI: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETNE: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETOC: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETOS: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETPC: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETPL: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASETPS: {Flags: gc.SizeB | gc.RightWrite | gc.UseCarry}, |
| x86.ASHLB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHLL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHLQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHLW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHRB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHRL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHRQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASHRW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.ShiftCX | gc.SetCarry}, |
| x86.ASQRTSD: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, |
| x86.ASTOSB: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, |
| x86.ASTOSL: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, |
| x86.ASTOSQ: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, |
| x86.ASTOSW: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, |
| obj.ADUFFZERO: {Flags: gc.OK, Reguse: AX | DI, Regset: DI}, |
| x86.ASUBB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.ASUBL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.ASUBQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.ASUBW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.ASUBSD: {Flags: gc.SizeD | gc.LeftRead | RightRdwr}, |
| x86.ASUBSS: {Flags: gc.SizeF | gc.LeftRead | RightRdwr}, |
| x86.ATESTB: {Flags: gc.SizeB | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ATESTL: {Flags: gc.SizeL | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ATESTQ: {Flags: gc.SizeQ | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.ATESTW: {Flags: gc.SizeW | gc.LeftRead | gc.RightRead | gc.SetCarry}, |
| x86.AUCOMISD: {Flags: gc.SizeD | gc.LeftRead | gc.RightRead}, |
| x86.AUCOMISS: {Flags: gc.SizeF | gc.LeftRead | gc.RightRead}, |
| x86.AXCHGB: {Flags: gc.SizeB | LeftRdwr | RightRdwr}, |
| x86.AXCHGL: {Flags: gc.SizeL | LeftRdwr | RightRdwr}, |
| x86.AXCHGQ: {Flags: gc.SizeQ | LeftRdwr | RightRdwr}, |
| x86.AXCHGW: {Flags: gc.SizeW | LeftRdwr | RightRdwr}, |
| x86.AXORB: {Flags: gc.SizeB | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AXORL: {Flags: gc.SizeL | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AXORQ: {Flags: gc.SizeQ | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| x86.AXORW: {Flags: gc.SizeW | gc.LeftRead | RightRdwr | gc.SetCarry}, |
| } |
| |
| func progflags(p *obj.Prog) uint32 { |
| flags := progtable[p.As].Flags |
| if flags&gc.ImulAXDX != 0 && p.To.Type != obj.TYPE_NONE { |
| flags |= RightRdwr |
| } |
| return flags |
| } |
| |
| func progcarryflags(p *obj.Prog) uint32 { |
| return progtable[p.As].Flags |
| } |
| |
| func proginfo(p *obj.Prog) { |
| info := &p.Info |
| *info = progtable[p.As] |
| if info.Flags == 0 { |
| gc.Fatalf("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)) |
| } |
| if gc.Ctxt.Flag_dynlink { |
| // When -dynlink is passed, many operations on external names (and |
| // also calling duffzero/duffcopy) use R15 as a scratch register. |
| if p.As == x86.ALEAQ || info.Flags == gc.Pseudo || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP { |
| return |
| } |
| if p.As == obj.ADUFFZERO || p.As == obj.ADUFFCOPY || (p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local) || (p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local) { |
| info.Reguse |= R15 |
| info.Regset |= R15 |
| return |
| } |
| } |
| } |
