// determineLinkMode sets Linkmode.
//
// It is called after flags are processed and inputs are processed,
// so the Linkmode variable has an initial value from the -linkmode
// flag and the iscgo externalobj variables are set.
func determineLinkMode(ctxt *Link) {
switch Linkmode {
case LinkAuto:
// The environment variable GO_EXTLINK_ENABLED controls the
// default value of -linkmode. If it is not set when the
// linker is called we take the value it was set to when
// cmd/link was compiled. (See make.bash.)
switch obj.Getgoextlinkenabled() {
case "0":
if needed, reason := mustLinkExternal(ctxt); needed {
Exitf("internal linking requested via GO_EXTLINK_ENABLED, but external linking required: %s", reason)
}
Linkmode = LinkInternal
case "1":
Linkmode = LinkExternal
default:
if needed, _ := mustLinkExternal(ctxt); needed {
Linkmode = LinkExternal
} else if iscgo && externalobj {
Linkmode = LinkExternal
} else {
Linkmode = LinkInternal
}
}
case LinkInternal:
if needed, reason := mustLinkExternal(ctxt); needed {
Exitf("internal linking requested but external linking required: %s", reason)
}
}
}
func archinit(ctxt *ld.Link) {
// 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
}
if ld.Buildmode == ld.BuildmodeCArchive || ld.Buildmode == ld.BuildmodeCShared || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hlinux: // s390x ELF
ld.Elfinit(ctxt)
ld.HEADR = ld.ELFRESERVE
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
}
if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
}
}
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:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hlinux: /* s390x elf */
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 = 0x10000
}
}
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))
}
}
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:
break
}
switch ld.HEADTYPE {
default:
ld.Diag("unknown -H option")
ld.Errorexit()
fallthrough
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: /* arm64 elf */
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 = 0x10000
}
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
}
}
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))
}
}
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
}
if ld.Buildmode == ld.BuildmodeCArchive || ld.Buildmode == ld.BuildmodeCShared || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
}
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 obj.Hlinux,
obj.Hfreebsd,
obj.Hnacl,
obj.Hdarwin:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.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 obj.Hlinux, /* arm elf */
obj.Hfreebsd,
obj.Hnetbsd,
obj.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 obj.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 obj.Hdarwin: /* apple MACH */
ld.Debug['w'] = 1 // disable DWARF generation
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))
}
}
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.Buildmode {
case ld.BuildmodePIE, ld.BuildmodeShared:
ld.Linkmode = ld.LinkExternal
}
if ld.Linkshared {
ld.Linkmode = ld.LinkExternal
}
if ld.Linkmode == ld.LinkExternal {
toc := ld.Linklookup(ld.Ctxt, ".TOC.", 0)
toc.Type = obj.SDYNIMPORT
}
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 obj.Hlinux:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.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 obj.Hlinux: /* ppc64 elf */
if ld.Thestring == "ppc64" {
ld.Debug['d'] = 1 // TODO(austin): ELF ABI v1 not supported yet
}
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 = 0x10000
}
case obj.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
}
}
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))
}
}
func archinit(ctxt *ld.Link) {
// 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
}
if ld.Buildmode == ld.BuildmodeCShared || ld.Buildmode == ld.BuildmodePIE || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
got := ld.Linklookup(ctxt, "_GLOBAL_OFFSET_TABLE_", 0)
got.Type = obj.SDYNIMPORT
got.Attr |= ld.AttrReachable
}
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 obj.Hdarwin,
obj.Hfreebsd,
obj.Hlinux,
obj.Hnetbsd,
obj.Hopenbsd,
obj.Hwindows:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 4096 + 32
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hdarwin: /* apple MACH */
ld.Machoinit()
ld.HEADR = ld.INITIAL_MACHO_HEADR
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 4096 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hlinux, /* elf32 executable */
obj.Hfreebsd,
obj.Hnetbsd,
obj.Hopenbsd:
ld.Elfinit(ctxt)
ld.HEADR = ld.ELFRESERVE
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x08048000 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hnacl:
ld.Elfinit(ctxt)
ld.HEADR = 0x10000
ld.Funcalign = 32
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x20000
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
case obj.Hwindows: /* PE executable */
ld.Peinit(ctxt)
ld.HEADR = ld.PEFILEHEADR
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = ld.PEBASE + int64(ld.PESECTHEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = ld.PESECTALIGN
}
}
if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
}
}
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 obj.Hdarwin,
obj.Hfreebsd,
obj.Hhaiku,
obj.Hlinux,
obj.Hnetbsd,
obj.Hopenbsd,
obj.Hwindows:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32
if ld.INITTEXT == -1 {
ld.INITTEXT = 4096 + 32
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case obj.Hdarwin: /* apple MACH */
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
}
case obj.Hlinux, /* elf32 executable */
obj.Hfreebsd,
obj.Hhaiku,
obj.Hnetbsd,
obj.Hopenbsd:
ld.Elfinit()
ld.HEADR = ld.ELFRESERVE
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x08048000 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case obj.Hnacl:
ld.Elfinit()
ld.HEADR = 0x10000
ld.Funcalign = 32
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x20000
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 0x10000
}
case obj.Hwindows: /* PE executable */
ld.Peinit()
ld.HEADR = ld.PEFILEHEADR
if ld.INITTEXT == -1 {
ld.INITTEXT = ld.PEBASE + int64(ld.PESECTHEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = ld.PESECTALIGN
}
}
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))
}
}
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
}
if ld.Buildmode == ld.BuildmodeCArchive || ld.Buildmode == ld.BuildmodeCShared || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
}
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 obj.Hdarwin,
obj.Hdragonfly,
obj.Hhaiku,
obj.Hfreebsd,
obj.Hlinux,
obj.Hnacl,
obj.Hnetbsd,
obj.Hopenbsd,
obj.Hsolaris,
obj.Hwindows:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32 + 8
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x200000 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 0x200000
}
case obj.Helf: /* elf32 executable */
ld.HEADR = int32(ld.Rnd(52+3*32, 16))
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x80110000
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case obj.Hdarwin: /* apple MACH */
ld.Machoinit()
ld.HEADR = ld.INITIAL_MACHO_HEADR
if ld.INITRND == -1 {
ld.INITRND = 4096
}
if ld.INITTEXT == -1 {
ld.INITTEXT = 4096 + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
case obj.Hlinux, /* elf64 executable */
obj.Hfreebsd, /* freebsd */
obj.Hhaiku, /* haiku */
obj.Hnetbsd, /* netbsd */
obj.Hopenbsd, /* openbsd */
obj.Hdragonfly, /* dragonfly */
obj.Hsolaris: /* solaris */
ld.Elfinit()
ld.HEADR = ld.ELFRESERVE
if ld.INITTEXT == -1 {
ld.INITTEXT = (1 << 22) + int64(ld.HEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 4096
}
case obj.Hnacl:
ld.Elfinit()
ld.Debug['w']++ // disable dwarf, which gets confused and is useless anyway
ld.HEADR = 0x10000
ld.Funcalign = 32
if ld.INITTEXT == -1 {
ld.INITTEXT = 0x20000
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = 0x10000
}
case obj.Hwindows: /* PE executable */
ld.Peinit()
ld.HEADR = ld.PEFILEHEADR
if ld.INITTEXT == -1 {
ld.INITTEXT = ld.PEBASE + int64(ld.PESECTHEADR)
}
if ld.INITDAT == -1 {
ld.INITDAT = 0
}
if ld.INITRND == -1 {
ld.INITRND = ld.PESECTALIGN
}
}
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))
}
}
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.Diag("unknown -H option")
ld.Errorexit()
fallthrough
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))
}
func archinit(ctxt *ld.Link) {
// 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.Buildmode {
case ld.BuildmodePIE, ld.BuildmodeShared:
ld.Linkmode = ld.LinkExternal
}
if *ld.FlagLinkshared {
ld.Linkmode = ld.LinkExternal
}
if ld.Linkmode == ld.LinkExternal {
toc := ld.Linklookup(ctxt, ".TOC.", 0)
toc.Type = obj.SDYNIMPORT
}
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 obj.Hlinux:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 4128
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hlinux: /* ppc64 elf */
if ld.SysArch == sys.ArchPPC64 {
*ld.FlagD = true // TODO(austin): ELF ABI v1 not supported yet
}
ld.Elfinit(ctxt)
ld.HEADR = ld.ELFRESERVE
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
case obj.Hnacl:
ld.Elfinit(ctxt)
ld.HEADR = 0x10000
ld.Funcalign = 16
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x20000
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
}
if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
}
}
func archinit(ctxt *ld.Link) {
// 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
}
// Darwin/arm64 only supports external linking
if ld.HEADTYPE == obj.Hdarwin {
ld.Linkmode = ld.LinkExternal
}
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 obj.Hlinux, obj.Hdarwin:
break
}
if ld.Buildmode == ld.BuildmodeCShared || ld.DynlinkingGo() {
ld.Linkmode = ld.LinkExternal
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 4128
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hlinux: /* arm64 elf */
ld.Elfinit(ctxt)
ld.HEADR = ld.ELFRESERVE
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
case obj.Hdarwin: /* apple MACH */
*ld.FlagW = true // disable DWARF generation
ld.Machoinit()
ld.HEADR = ld.INITIAL_MACHO_HEADR
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 4096 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 4096
}
case obj.Hnacl:
ld.Elfinit(ctxt)
ld.HEADR = 0x10000
ld.Funcalign = 16
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x20000
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
}
if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
}
}
func archinit(ctxt *ld.Link) {
// 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 obj.Hlinux:
break
}
switch ld.HEADTYPE {
default:
ld.Exitf("unknown -H option: %v", ld.HEADTYPE)
case obj.Hplan9: /* plan 9 */
ld.HEADR = 32
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 16*1024 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 16 * 1024
}
case obj.Hlinux: /* mips64 elf */
ld.Elfinit(ctxt)
ld.HEADR = ld.ELFRESERVE
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
case obj.Hnacl:
ld.Elfinit(ctxt)
ld.HEADR = 0x10000
ld.Funcalign = 16
if *ld.FlagTextAddr == -1 {
*ld.FlagTextAddr = 0x20000
}
if *ld.FlagDataAddr == -1 {
*ld.FlagDataAddr = 0
}
if *ld.FlagRound == -1 {
*ld.FlagRound = 0x10000
}
}
if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
}
}
