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// Inferno utils/5l/obj.c
// http://code.google.com/p/inferno-os/source/browse/utils/5l/obj.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package main
import (
"cmd/internal/ld"
"cmd/internal/obj"
"fmt"
"log"
)
// Reading object files.
func main() {
linkarchinit()
ld.Ldmain()
}
func linkarchinit() {
ld.Thestring = "arm"
ld.Thelinkarch = &ld.Linkarm
ld.Thearch.Thechar = thechar
ld.Thearch.Ptrsize = ld.Thelinkarch.Ptrsize
ld.Thearch.Intsize = ld.Thelinkarch.Ptrsize
ld.Thearch.Regsize = ld.Thelinkarch.Regsize
ld.Thearch.Funcalign = FuncAlign
ld.Thearch.Maxalign = MaxAlign
ld.Thearch.Minlc = MINLC
ld.Thearch.Dwarfregsp = DWARFREGSP
ld.Thearch.Adddynlib = adddynlib
ld.Thearch.Adddynrel = adddynrel
ld.Thearch.Adddynsym = adddynsym
ld.Thearch.Archinit = archinit
ld.Thearch.Archreloc = archreloc
ld.Thearch.Archrelocvariant = archrelocvariant
ld.Thearch.Asmb = asmb
ld.Thearch.Elfreloc1 = elfreloc1
ld.Thearch.Elfsetupplt = elfsetupplt
ld.Thearch.Gentext = gentext
ld.Thearch.Machoreloc1 = machoreloc1
ld.Thearch.Lput = ld.Lputl
ld.Thearch.Wput = ld.Wputl
ld.Thearch.Vput = ld.Vputl
ld.Thearch.Linuxdynld = "/lib/ld-linux.so.3" // 2 for OABI, 3 for EABI
ld.Thearch.Freebsddynld = "/usr/libexec/ld-elf.so.1"
ld.Thearch.Openbsddynld = "/usr/libexec/ld.so"
ld.Thearch.Netbsddynld = "/libexec/ld.elf_so"
ld.Thearch.Dragonflydynld = "XXX"
ld.Thearch.Solarisdynld = "XXX"
}
func archinit() {
// getgoextlinkenabled is based on GO_EXTLINK_ENABLED when
// Go was built; see ../../make.bash.
if ld.Linkmode == ld.LinkAuto && obj.Getgoextlinkenabled() == "0" {
ld.Linkmode = ld.LinkInternal
}
switch ld.HEADTYPE {
default:
if ld.Linkmode == ld.LinkAuto {
ld.Linkmode = ld.LinkInternal
}
if ld.Linkmode == ld.LinkExternal && obj.Getgoextlinkenabled() != "1" {
log.Fatalf("cannot use -linkmode=external with -H %s", ld.Headstr(int(ld.HEADTYPE)))
}
case ld.Hlinux,
ld.Hfreebsd,
ld.Hnacl,
ld.Hdarwin:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case ld.Hplan9: /* plan 9 */
ld.HEADR = 32
if ld.INITTEXT == -1 {
ld.INITTEXT = 4128
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case ld.Hlinux, /* arm elf */
ld.Hfreebsd,
ld.Hnetbsd,
ld.Hopenbsd:
ld.Debug['d'] = 0
// with dynamic linking
ld.Elfinit()
ld.HEADR = ld.ELFRESERVE
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x10000 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case ld.Hnacl:
ld.Elfinit()
ld.HEADR = 0x10000
ld.Funcalign = 16
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x20000
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 0x10000
}
case ld.Hdarwin: /* apple MACH */
ld.Debug['w'] = 1 // disable DWARF generataion
ld.Machoinit()
ld.HEADR = ld.INITIAL_MACHO_HEADR
if ld.INITTEXT == -1 {
ld.INITTEXT = 4096 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
}
if ld.INITDAT != 0 && ld.INITRND != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(ld.INITDAT), uint32(ld.INITRND))
}
// embed goarm to runtime.goarm
s := ld.Linklookup(ld.Ctxt, "runtime.goarm", 0)
s.Type = ld.SRODATA
ld.Adduint8(ld.Ctxt, s, uint8(ld.Ctxt.Goarm))
}