github.com/rsc/tmp@v0.0.0-20240517235954-6deaab19748b/bootstrap/bootstrap6g/galign.go (about)

     1  // Do not edit. Bootstrap copy of /Users/rsc/g/go/src/cmd/6g/galign.go
     2  
     3  // Copyright 2009 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import (
    10  	"rsc.io/tmp/bootstrap/internal/gc"
    11  	"rsc.io/tmp/bootstrap/internal/obj"
    12  	"rsc.io/tmp/bootstrap/internal/obj/x86"
    13  )
    14  
    15  var (
    16  	thechar     int           = '6'
    17  	thestring   string        = "amd64"
    18  	thelinkarch *obj.LinkArch = &x86.Linkamd64
    19  )
    20  
    21  func linkarchinit() {
    22  	if obj.Getgoarch() == "amd64p32" {
    23  		thelinkarch = &x86.Linkamd64p32
    24  		gc.Thearch.Thelinkarch = thelinkarch
    25  		thestring = "amd64p32"
    26  		gc.Thearch.Thestring = "amd64p32"
    27  	}
    28  }
    29  
    30  var MAXWIDTH int64 = 1 << 50
    31  
    32  var (
    33  	addptr int = x86.AADDQ
    34  	movptr int = x86.AMOVQ
    35  	leaptr int = x86.ALEAQ
    36  	cmpptr int = x86.ACMPQ
    37  )
    38  
    39  /*
    40   * go declares several platform-specific type aliases:
    41   * int, uint, and uintptr
    42   */
    43  var typedefs = []gc.Typedef{
    44  	gc.Typedef{"int", gc.TINT, gc.TINT64},
    45  	gc.Typedef{"uint", gc.TUINT, gc.TUINT64},
    46  	gc.Typedef{"uintptr", gc.TUINTPTR, gc.TUINT64},
    47  }
    48  
    49  func betypeinit() {
    50  	gc.Widthptr = 8
    51  	gc.Widthint = 8
    52  	gc.Widthreg = 8
    53  	if obj.Getgoarch() == "amd64p32" {
    54  		gc.Widthptr = 4
    55  		gc.Widthint = 4
    56  		addptr = x86.AADDL
    57  		movptr = x86.AMOVL
    58  		leaptr = x86.ALEAL
    59  		cmpptr = x86.ACMPL
    60  		typedefs[0].Sameas = gc.TINT32
    61  		typedefs[1].Sameas = gc.TUINT32
    62  		typedefs[2].Sameas = gc.TUINT32
    63  	}
    64  
    65  	if gc.Ctxt.Flag_dynlink {
    66  		gc.Thearch.ReservedRegs = append(gc.Thearch.ReservedRegs, x86.REG_R15)
    67  	}
    68  }
    69  
    70  func main() {
    71  	if obj.Getgoos() == "nacl" {
    72  		resvd = append(resvd, x86.REG_BP, x86.REG_R15)
    73  	} else if obj.Framepointer_enabled != 0 {
    74  		resvd = append(resvd, x86.REG_BP)
    75  	}
    76  
    77  	gc.Thearch.Thechar = thechar
    78  	gc.Thearch.Thestring = thestring
    79  	gc.Thearch.Thelinkarch = thelinkarch
    80  	gc.Thearch.Typedefs = typedefs
    81  	gc.Thearch.REGSP = x86.REGSP
    82  	gc.Thearch.REGCTXT = x86.REGCTXT
    83  	gc.Thearch.REGCALLX = x86.REG_BX
    84  	gc.Thearch.REGCALLX2 = x86.REG_AX
    85  	gc.Thearch.REGRETURN = x86.REG_AX
    86  	gc.Thearch.REGMIN = x86.REG_AX
    87  	gc.Thearch.REGMAX = x86.REG_R15
    88  	gc.Thearch.FREGMIN = x86.REG_X0
    89  	gc.Thearch.FREGMAX = x86.REG_X15
    90  	gc.Thearch.MAXWIDTH = MAXWIDTH
    91  	gc.Thearch.ReservedRegs = resvd
    92  
    93  	gc.Thearch.AddIndex = addindex
    94  	gc.Thearch.Betypeinit = betypeinit
    95  	gc.Thearch.Cgen_bmul = cgen_bmul
    96  	gc.Thearch.Cgen_hmul = cgen_hmul
    97  	gc.Thearch.Cgen_shift = cgen_shift
    98  	gc.Thearch.Clearfat = clearfat
    99  	gc.Thearch.Defframe = defframe
   100  	gc.Thearch.Dodiv = dodiv
   101  	gc.Thearch.Excise = excise
   102  	gc.Thearch.Expandchecks = expandchecks
   103  	gc.Thearch.Getg = getg
   104  	gc.Thearch.Gins = gins
   105  	gc.Thearch.Ginsboolval = ginsboolval
   106  	gc.Thearch.Ginscon = ginscon
   107  	gc.Thearch.Ginsnop = ginsnop
   108  	gc.Thearch.Gmove = gmove
   109  	gc.Thearch.Linkarchinit = linkarchinit
   110  	gc.Thearch.Peep = peep
   111  	gc.Thearch.Proginfo = proginfo
   112  	gc.Thearch.Regtyp = regtyp
   113  	gc.Thearch.Sameaddr = sameaddr
   114  	gc.Thearch.Smallindir = smallindir
   115  	gc.Thearch.Stackaddr = stackaddr
   116  	gc.Thearch.Stackcopy = stackcopy
   117  	gc.Thearch.Sudoaddable = sudoaddable
   118  	gc.Thearch.Sudoclean = sudoclean
   119  	gc.Thearch.Excludedregs = excludedregs
   120  	gc.Thearch.RtoB = RtoB
   121  	gc.Thearch.FtoB = FtoB
   122  	gc.Thearch.BtoR = BtoR
   123  	gc.Thearch.BtoF = BtoF
   124  	gc.Thearch.Optoas = optoas
   125  	gc.Thearch.Doregbits = doregbits
   126  	gc.Thearch.Regnames = regnames
   127  
   128  	gc.Main()
   129  	gc.RunAtExit()
   130  }