github.com/sean-/go@v0.0.0-20151219100004-97f854cd7bb6/src/cmd/compile/internal/ppc64/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 ppc64
     6  
     7  import (
     8  	"cmd/compile/internal/gc"
     9  	"cmd/internal/obj"
    10  	"cmd/internal/obj/ppc64"
    11  )
    12  
    13  var thechar int = '9'
    14  
    15  var thestring string = "ppc64"
    16  
    17  var thelinkarch *obj.LinkArch
    18  
    19  func linkarchinit() {
    20  	thestring = obj.Getgoarch()
    21  	gc.Thearch.Thestring = thestring
    22  	if thestring == "ppc64le" {
    23  		thelinkarch = &ppc64.Linkppc64le
    24  	} else {
    25  		thelinkarch = &ppc64.Linkppc64
    26  	}
    27  	gc.Thearch.Thelinkarch = thelinkarch
    28  }
    29  
    30  var MAXWIDTH int64 = 1 << 50
    31  
    32  /*
    33   * go declares several platform-specific type aliases:
    34   * int, uint, and uintptr
    35   */
    36  var typedefs = []gc.Typedef{
    37  	{"int", gc.TINT, gc.TINT64},
    38  	{"uint", gc.TUINT, gc.TUINT64},
    39  	{"uintptr", gc.TUINTPTR, gc.TUINT64},
    40  }
    41  
    42  func betypeinit() {
    43  	gc.Widthptr = 8
    44  	gc.Widthint = 8
    45  	gc.Widthreg = 8
    46  
    47  	if gc.Ctxt.Flag_shared != 0 {
    48  		gc.Thearch.ReservedRegs = append(gc.Thearch.ReservedRegs, ppc64.REG_R2)
    49  		gc.Thearch.ReservedRegs = append(gc.Thearch.ReservedRegs, ppc64.REG_R12)
    50  	}
    51  }
    52  
    53  func Main() {
    54  	gc.Thearch.Thechar = thechar
    55  	gc.Thearch.Thestring = thestring
    56  	gc.Thearch.Thelinkarch = thelinkarch
    57  	gc.Thearch.Typedefs = typedefs
    58  	gc.Thearch.REGSP = ppc64.REGSP
    59  	gc.Thearch.REGCTXT = ppc64.REGCTXT
    60  	gc.Thearch.REGCALLX = ppc64.REG_R3
    61  	gc.Thearch.REGCALLX2 = ppc64.REG_R4
    62  	gc.Thearch.REGRETURN = ppc64.REG_R3
    63  	gc.Thearch.REGMIN = ppc64.REG_R0
    64  	gc.Thearch.REGMAX = ppc64.REG_R31
    65  	gc.Thearch.FREGMIN = ppc64.REG_F0
    66  	gc.Thearch.FREGMAX = ppc64.REG_F31
    67  	gc.Thearch.MAXWIDTH = MAXWIDTH
    68  	gc.Thearch.ReservedRegs = resvd
    69  
    70  	gc.Thearch.Betypeinit = betypeinit
    71  	gc.Thearch.Cgen_hmul = cgen_hmul
    72  	gc.Thearch.Cgen_shift = cgen_shift
    73  	gc.Thearch.Clearfat = clearfat
    74  	gc.Thearch.Defframe = defframe
    75  	gc.Thearch.Dodiv = dodiv
    76  	gc.Thearch.Excise = excise
    77  	gc.Thearch.Expandchecks = expandchecks
    78  	gc.Thearch.Getg = getg
    79  	gc.Thearch.Gins = gins
    80  	gc.Thearch.Ginscmp = ginscmp
    81  	gc.Thearch.Ginscon = ginscon
    82  	gc.Thearch.Ginsnop = ginsnop
    83  	gc.Thearch.Gmove = gmove
    84  	gc.Thearch.Linkarchinit = linkarchinit
    85  	gc.Thearch.Peep = peep
    86  	gc.Thearch.Proginfo = proginfo
    87  	gc.Thearch.Regtyp = regtyp
    88  	gc.Thearch.Sameaddr = sameaddr
    89  	gc.Thearch.Smallindir = smallindir
    90  	gc.Thearch.Stackaddr = stackaddr
    91  	gc.Thearch.Blockcopy = blockcopy
    92  	gc.Thearch.Sudoaddable = sudoaddable
    93  	gc.Thearch.Sudoclean = sudoclean
    94  	gc.Thearch.Excludedregs = excludedregs
    95  	gc.Thearch.RtoB = RtoB
    96  	gc.Thearch.FtoB = RtoB
    97  	gc.Thearch.BtoR = BtoR
    98  	gc.Thearch.BtoF = BtoF
    99  	gc.Thearch.Optoas = optoas
   100  	gc.Thearch.Doregbits = doregbits
   101  	gc.Thearch.Regnames = regnames
   102  
   103  	gc.Main()
   104  	gc.Exit(0)
   105  }