1 // Copyright 2009 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 "fmt" 12 "os" 13 ) 14 15 var thechar int = '8' 16 17 var thestring string = "386" 18 19 var thelinkarch *obj.LinkArch = &x86.Link386 20 21 func linkarchinit() { 22 } 23 24 var MAXWIDTH int64 = (1 << 32) - 1 25 26 /* 27 * go declares several platform-specific type aliases: 28 * int, uint, and uintptr 29 */ 30 var typedefs = []gc.Typedef{ 31 gc.Typedef{"int", gc.TINT, gc.TINT32}, 32 gc.Typedef{"uint", gc.TUINT, gc.TUINT32}, 33 gc.Typedef{"uintptr", gc.TUINTPTR, gc.TUINT32}, 34 } 35 36 func betypeinit() { 37 gc.Widthptr = 4 38 gc.Widthint = 4 39 gc.Widthreg = 4 40 } 41 42 func Main() { 43 gc.Thearch.Thechar = thechar 44 gc.Thearch.Thestring = thestring 45 gc.Thearch.Thelinkarch = thelinkarch 46 gc.Thearch.Typedefs = typedefs 47 gc.Thearch.REGSP = x86.REGSP 48 gc.Thearch.REGCTXT = x86.REGCTXT 49 gc.Thearch.REGCALLX = x86.REG_BX 50 gc.Thearch.REGCALLX2 = x86.REG_AX 51 gc.Thearch.REGRETURN = x86.REG_AX 52 gc.Thearch.REGMIN = x86.REG_AX 53 gc.Thearch.REGMAX = x86.REG_DI 54 switch v := obj.Getgo386(); v { 55 case "387": 56 gc.Thearch.FREGMIN = x86.REG_F0 57 gc.Thearch.FREGMAX = x86.REG_F7 58 gc.Thearch.Use387 = true 59 case "sse2": 60 gc.Thearch.FREGMIN = x86.REG_X0 61 gc.Thearch.FREGMAX = x86.REG_X7 62 default: 63 fmt.Fprintf(os.Stderr, "unsupported setting GO386=%s\n", v) 64 gc.Exit(1) 65 } 66 gc.Thearch.MAXWIDTH = MAXWIDTH 67 gc.Thearch.ReservedRegs = resvd 68 69 gc.Thearch.Betypeinit = betypeinit 70 gc.Thearch.Bgen_float = bgen_float 71 gc.Thearch.Cgen64 = cgen64 72 gc.Thearch.Cgen_bmul = cgen_bmul 73 gc.Thearch.Cgen_float = cgen_float 74 gc.Thearch.Cgen_hmul = cgen_hmul 75 gc.Thearch.Cgen_shift = cgen_shift 76 gc.Thearch.Clearfat = clearfat 77 gc.Thearch.Cmp64 = cmp64 78 gc.Thearch.Defframe = defframe 79 gc.Thearch.Dodiv = cgen_div 80 gc.Thearch.Excise = excise 81 gc.Thearch.Expandchecks = expandchecks 82 gc.Thearch.Getg = getg 83 gc.Thearch.Gins = gins 84 gc.Thearch.Ginscmp = ginscmp 85 gc.Thearch.Ginscon = ginscon 86 gc.Thearch.Ginsnop = ginsnop 87 gc.Thearch.Gmove = gmove 88 gc.Thearch.Igenindex = igenindex 89 gc.Thearch.Linkarchinit = linkarchinit 90 gc.Thearch.Peep = peep 91 gc.Thearch.Proginfo = proginfo 92 gc.Thearch.Regtyp = regtyp 93 gc.Thearch.Sameaddr = sameaddr 94 gc.Thearch.Smallindir = smallindir 95 gc.Thearch.Stackaddr = stackaddr 96 gc.Thearch.Blockcopy = blockcopy 97 gc.Thearch.Sudoaddable = sudoaddable 98 gc.Thearch.Sudoclean = sudoclean 99 gc.Thearch.Excludedregs = excludedregs 100 gc.Thearch.RtoB = RtoB 101 gc.Thearch.FtoB = FtoB 102 gc.Thearch.BtoR = BtoR 103 gc.Thearch.BtoF = BtoF 104 gc.Thearch.Optoas = optoas 105 gc.Thearch.Doregbits = doregbits 106 gc.Thearch.Regnames = regnames 107 108 gc.Main() 109 gc.Exit(0) 110 } 111
