github.com/gocuntian/go@v0.0.0-20160610041250-fee02d270bf8/src/cmd/compile/internal/x86/galign.go (about)

     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  func betypeinit() {
    16  }
    17  
    18  func Main() {
    19  	gc.Thearch.LinkArch = &x86.Link386
    20  	gc.Thearch.REGSP = x86.REGSP
    21  	gc.Thearch.REGCTXT = x86.REGCTXT
    22  	gc.Thearch.REGCALLX = x86.REG_BX
    23  	gc.Thearch.REGCALLX2 = x86.REG_AX
    24  	gc.Thearch.REGRETURN = x86.REG_AX
    25  	gc.Thearch.REGMIN = x86.REG_AX
    26  	gc.Thearch.REGMAX = x86.REG_DI
    27  	switch v := obj.Getgo386(); v {
    28  	case "387":
    29  		gc.Thearch.FREGMIN = x86.REG_F0
    30  		gc.Thearch.FREGMAX = x86.REG_F7
    31  		gc.Thearch.Use387 = true
    32  	case "sse2":
    33  		gc.Thearch.FREGMIN = x86.REG_X0
    34  		gc.Thearch.FREGMAX = x86.REG_X7
    35  	default:
    36  		fmt.Fprintf(os.Stderr, "unsupported setting GO386=%s\n", v)
    37  		gc.Exit(1)
    38  	}
    39  	gc.Thearch.MAXWIDTH = (1 << 32) - 1
    40  	gc.Thearch.ReservedRegs = resvd
    41  
    42  	gc.Thearch.Betypeinit = betypeinit
    43  	gc.Thearch.Bgen_float = bgen_float
    44  	gc.Thearch.Cgen64 = cgen64
    45  	gc.Thearch.Cgen_bmul = cgen_bmul
    46  	gc.Thearch.Cgen_float = cgen_float
    47  	gc.Thearch.Cgen_hmul = cgen_hmul
    48  	gc.Thearch.Cgen_shift = cgen_shift
    49  	gc.Thearch.Clearfat = clearfat
    50  	gc.Thearch.Cmp64 = cmp64
    51  	gc.Thearch.Defframe = defframe
    52  	gc.Thearch.Dodiv = cgen_div
    53  	gc.Thearch.Excise = excise
    54  	gc.Thearch.Expandchecks = expandchecks
    55  	gc.Thearch.Getg = getg
    56  	gc.Thearch.Gins = gins
    57  	gc.Thearch.Ginscmp = ginscmp
    58  	gc.Thearch.Ginscon = ginscon
    59  	gc.Thearch.Ginsnop = ginsnop
    60  	gc.Thearch.Gmove = gmove
    61  	gc.Thearch.Igenindex = igenindex
    62  	gc.Thearch.Peep = peep
    63  	gc.Thearch.Proginfo = proginfo
    64  	gc.Thearch.Regtyp = regtyp
    65  	gc.Thearch.Sameaddr = sameaddr
    66  	gc.Thearch.Smallindir = smallindir
    67  	gc.Thearch.Stackaddr = stackaddr
    68  	gc.Thearch.Blockcopy = blockcopy
    69  	gc.Thearch.Sudoaddable = sudoaddable
    70  	gc.Thearch.Sudoclean = sudoclean
    71  	gc.Thearch.Excludedregs = excludedregs
    72  	gc.Thearch.RtoB = RtoB
    73  	gc.Thearch.FtoB = FtoB
    74  	gc.Thearch.BtoR = BtoR
    75  	gc.Thearch.BtoF = BtoF
    76  	gc.Thearch.Optoas = optoas
    77  	gc.Thearch.Doregbits = doregbits
    78  	gc.Thearch.Regnames = regnames
    79  
    80  	gc.Main()
    81  	gc.Exit(0)
    82  }