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cmd/link/internal/ld: make Thearch unexported

Browse source 
s/Thearch/thearch/

This reduces the amount of exported global variables,
which in turn could make it easier to refactor them later.

Also updated somewhat vague comment about ld.Thearch.
There is no need for Thearch to be exported as Archinit is
called by ld.Main.

Updates #22095

Change-Id: I266b291f6eac0165f70c51964738206e066cea08
Reviewed-on: https://go-review.googlesource.com/103878
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
quasilyte 2018-04-01 00:58:48 +03:00 committed by Brad Fitzpatrick
parent fac7d5dd95
commit da02dcda02
8 changed files with 36 additions and 36 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
src/cmd/link/internal/ld/data.go
View file

@ -61,9 +61,9 @@ func isRuntimeDepPkg(pkg string) bool {
// is used to determine when the section can be split if it becomes too large, to ensure that
// the trampolines are in the same section as the function that uses them.
func maxSizeTrampolinesPPC64(s *sym.Symbol, isTramp bool) uint64 {
// If Thearch.Trampoline is nil, then trampoline support is not available on this arch.
// If thearch.Trampoline is nil, then trampoline support is not available on this arch.
// A trampoline does not need any dependent trampolines.
if Thearch.Trampoline == nil || isTramp {
if thearch.Trampoline == nil || isTramp {
return 0
}
@ -83,7 +83,7 @@ func maxSizeTrampolinesPPC64(s *sym.Symbol, isTramp bool) uint64 {
// On PPC64 & PPC64LE the text sections might be split but will still insert trampolines
// where necessary.
func trampoline(ctxt *Link, s *sym.Symbol) {
if Thearch.Trampoline == nil {
if thearch.Trampoline == nil {
return // no need or no support of trampolines on this arch
}
@ -103,7 +103,7 @@ func trampoline(ctxt *Link, s *sym.Symbol) {
continue
}
Thearch.Trampoline(ctxt, r, s)
thearch.Trampoline(ctxt, r, s)
}
}
@ -195,7 +195,7 @@ func relocsym(ctxt *Link, s *sym.Symbol) {
case 8:
o = int64(ctxt.Arch.ByteOrder.Uint64(s.P[off:]))
}
if !Thearch.Archreloc(ctxt, r, s, &o) {
if !thearch.Archreloc(ctxt, r, s, &o) {
Errorf(s, "unknown reloc to %v: %d (%s)", r.Sym.Name, r.Type, sym.RelocName(ctxt.Arch, r.Type))
}
case objabi.R_TLS_LE:
@ -250,10 +250,10 @@ func relocsym(ctxt *Link, s *sym.Symbol) {
if ctxt.BuildMode == BuildModePIE && ctxt.IsELF {
// We are linking the final executable, so we
// can optimize any TLS IE relocation to LE.
if Thearch.TLSIEtoLE == nil {
if thearch.TLSIEtoLE == nil {
log.Fatalf("internal linking of TLS IE not supported on %v", ctxt.Arch.Family)
}
Thearch.TLSIEtoLE(s, int(off), int(r.Siz))
thearch.TLSIEtoLE(s, int(off), int(r.Siz))
o = int64(ctxt.Tlsoffset)
// TODO: o += r.Add when ctxt.Arch.Family != sys.AMD64?
// Why do we treat r.Add differently on AMD64?
@ -445,7 +445,7 @@ func relocsym(ctxt *Link, s *sym.Symbol) {
}
if r.Variant != sym.RV_NONE {
o = Thearch.Archrelocvariant(ctxt, r, s, o)
o = thearch.Archrelocvariant(ctxt, r, s, o)
}
if false {
@ -561,14 +561,14 @@ func dynrelocsym(ctxt *Link, s *sym.Symbol) {
// It's expected that some relocations will be done
// later by relocsym (R_TLS_LE, R_ADDROFF), so
// don't worry if Adddynrel returns false.
Thearch.Adddynrel(ctxt, s, r)
thearch.Adddynrel(ctxt, s, r)
continue
}
if r.Sym != nil && r.Sym.Type == sym.SDYNIMPORT || r.Type >= 256 {
if r.Sym != nil && !r.Sym.Attr.Reachable() {
Errorf(s, "dynamic relocation to unreachable symbol %s", r.Sym.Name)
}
if !Thearch.Adddynrel(ctxt, s, r) {
if !thearch.Adddynrel(ctxt, s, r) {
Errorf(s, "unsupported dynamic relocation for symbol %s (type=%d (%s) stype=%d (%s))", r.Sym.Name, r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Sym.Type, r.Sym.Type)
}
}
@ -911,7 +911,7 @@ func dosymtype(ctxt *Link) {
// symalign returns the required alignment for the given symbol s.
func symalign(s *sym.Symbol) int32 {
min := int32(Thearch.Minalign)
min := int32(thearch.Minalign)
if s.Align >= min {
return s.Align
} else if s.Align != 0 {
@ -922,7 +922,7 @@ func symalign(s *sym.Symbol) int32 {
// If we align it, we waste a lot of space to padding.
return min
}
align := int32(Thearch.Maxalign)
align := int32(thearch.Maxalign)
for int64(align) > s.Size && align > min {
align >>= 1
}

14
src/cmd/link/internal/ld/dwarf.go
View file

@ -1372,24 +1372,24 @@ func writeframes(ctxt *Link, syms []*sym.Symbol) []*sym.Symbol {
fs.AddUint8(0) // augmentation ""
dwarf.Uleb128put(dwarfctxt, fs, 1) // code_alignment_factor
dwarf.Sleb128put(dwarfctxt, fs, dataAlignmentFactor) // all CFI offset calculations include multiplication with this factor
dwarf.Uleb128put(dwarfctxt, fs, int64(Thearch.Dwarfreglr)) // return_address_register
dwarf.Uleb128put(dwarfctxt, fs, int64(thearch.Dwarfreglr)) // return_address_register
fs.AddUint8(dwarf.DW_CFA_def_cfa) // Set the current frame address..
dwarf.Uleb128put(dwarfctxt, fs, int64(Thearch.Dwarfregsp)) // ...to use the value in the platform's SP register (defined in l.go)...
dwarf.Uleb128put(dwarfctxt, fs, int64(thearch.Dwarfregsp)) // ...to use the value in the platform's SP register (defined in l.go)...
if haslinkregister(ctxt) {
dwarf.Uleb128put(dwarfctxt, fs, int64(0)) // ...plus a 0 offset.
fs.AddUint8(dwarf.DW_CFA_same_value) // The platform's link register is unchanged during the prologue.
dwarf.Uleb128put(dwarfctxt, fs, int64(Thearch.Dwarfreglr))
dwarf.Uleb128put(dwarfctxt, fs, int64(thearch.Dwarfreglr))
fs.AddUint8(dwarf.DW_CFA_val_offset) // The previous value...
dwarf.Uleb128put(dwarfctxt, fs, int64(Thearch.Dwarfregsp)) // ...of the platform's SP register...
dwarf.Uleb128put(dwarfctxt, fs, int64(thearch.Dwarfregsp)) // ...of the platform's SP register...
dwarf.Uleb128put(dwarfctxt, fs, int64(0)) // ...is CFA+0.
} else {
dwarf.Uleb128put(dwarfctxt, fs, int64(ctxt.Arch.PtrSize)) // ...plus the word size (because the call instruction implicitly adds one word to the frame).
fs.AddUint8(dwarf.DW_CFA_offset_extended) // The previous value...
dwarf.Uleb128put(dwarfctxt, fs, int64(Thearch.Dwarfreglr)) // ...of the return address...
dwarf.Uleb128put(dwarfctxt, fs, int64(thearch.Dwarfreglr)) // ...of the return address...
dwarf.Uleb128put(dwarfctxt, fs, int64(-ctxt.Arch.PtrSize)/dataAlignmentFactor) // ...is saved at [CFA - (PtrSize/4)].
}
@ -1432,13 +1432,13 @@ func writeframes(ctxt *Link, syms []*sym.Symbol) []*sym.Symbol {
// The return address is preserved at (CFA-frame_size)
// after a stack frame has been allocated.
deltaBuf = append(deltaBuf, dwarf.DW_CFA_offset_extended_sf)
deltaBuf = dwarf.AppendUleb128(deltaBuf, uint64(Thearch.Dwarfreglr))
deltaBuf = dwarf.AppendUleb128(deltaBuf, uint64(thearch.Dwarfreglr))
deltaBuf = dwarf.AppendSleb128(deltaBuf, -int64(pcsp.value)/dataAlignmentFactor)
} else {
// The return address is restored into the link register
// when a stack frame has been de-allocated.
deltaBuf = append(deltaBuf, dwarf.DW_CFA_same_value)
deltaBuf = dwarf.AppendUleb128(deltaBuf, uint64(Thearch.Dwarfreglr))
deltaBuf = dwarf.AppendUleb128(deltaBuf, uint64(thearch.Dwarfreglr))
}
deltaBuf = appendPCDeltaCFA(ctxt.Arch, deltaBuf, int64(nextpc)-int64(pcsp.pc), int64(pcsp.value))
} else {

16
src/cmd/link/internal/ld/elf.go
View file

@ -1366,7 +1366,7 @@ func elfrelocsect(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
if !r.Xsym.Attr.Reachable() {
Errorf(s, "unreachable reloc %d (%s) target %v", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Xsym.Name)
}
if !Thearch.Elfreloc1(ctxt, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
if !thearch.Elfreloc1(ctxt, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
Errorf(s, "unsupported obj reloc %d (%s)/%d to %s", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Siz, r.Sym.Name)
}
}
@ -1599,7 +1599,7 @@ func (ctxt *Link) doelf() {
s.Type = sym.SELFRXSECT
}
Thearch.Elfsetupplt(ctxt)
thearch.Elfsetupplt(ctxt)
s = ctxt.Syms.Lookup(elfRelType+".plt", 0)
s.Attr |= sym.AttrReachable
@ -1845,22 +1845,22 @@ func Asmbelf(ctxt *Link, symo int64) {
if interpreter == "" {
switch ctxt.HeadType {
case objabi.Hlinux:
interpreter = Thearch.Linuxdynld
interpreter = thearch.Linuxdynld
case objabi.Hfreebsd:
interpreter = Thearch.Freebsddynld
interpreter = thearch.Freebsddynld
case objabi.Hnetbsd:
interpreter = Thearch.Netbsddynld
interpreter = thearch.Netbsddynld
case objabi.Hopenbsd:
interpreter = Thearch.Openbsddynld
interpreter = thearch.Openbsddynld
case objabi.Hdragonfly:
interpreter = Thearch.Dragonflydynld
interpreter = thearch.Dragonflydynld
case objabi.Hsolaris:
interpreter = Thearch.Solarisdynld
interpreter = thearch.Solarisdynld
}
}

4
src/cmd/link/internal/ld/lib.go
View file

@ -124,7 +124,7 @@ type Arch struct {
}
var (
Thearch Arch
thearch Arch
Lcsize int32
rpath Rpath
Spsize int32
@ -212,7 +212,7 @@ func mayberemoveoutfile() {
}
func libinit(ctxt *Link) {
Funcalign = Thearch.Funcalign
Funcalign = thearch.Funcalign
// add goroot to the end of the libdir list.
suffix := ""

2
src/cmd/link/internal/ld/macho.go
View file

@ -927,7 +927,7 @@ func machorelocsect(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
if !r.Xsym.Attr.Reachable() {
Errorf(s, "unreachable reloc %d (%s) target %v", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Xsym.Name)
}
if !Thearch.Machoreloc1(ctxt.Arch, ctxt.Out, s, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
if !thearch.Machoreloc1(ctxt.Arch, ctxt.Out, s, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
Errorf(s, "unsupported obj reloc %d (%s)/%d to %s", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Siz, r.Sym.Name)
}
}

8
src/cmd/link/internal/ld/main.go
View file

@ -97,7 +97,7 @@ var (
// Main is the main entry point for the linker code.
func Main(arch *sys.Arch, theArch Arch) {
Thearch = theArch
thearch = theArch
ctxt := linknew(arch)
ctxt.Bso = bufio.NewWriter(os.Stdout)
@ -168,7 +168,7 @@ func Main(arch *sys.Arch, theArch Arch) {
}
ctxt.computeTLSOffset()
Thearch.Archinit(ctxt)
thearch.Archinit(ctxt)
if ctxt.linkShared && !ctxt.IsELF {
Exitf("-linkshared can only be used on elf systems")
@ -214,7 +214,7 @@ func Main(arch *sys.Arch, theArch Arch) {
ctxt.dope()
}
ctxt.addexport()
Thearch.Gentext(ctxt) // trampolines, call stubs, etc.
thearch.Gentext(ctxt) // trampolines, call stubs, etc.
ctxt.textbuildid()
ctxt.textaddress()
ctxt.pclntab()
@ -224,7 +224,7 @@ func Main(arch *sys.Arch, theArch Arch) {
ctxt.dodata()
ctxt.address()
ctxt.reloc()
Thearch.Asmb(ctxt)
thearch.Asmb(ctxt)
ctxt.undef()
ctxt.hostlink()
ctxt.archive()

2
src/cmd/link/internal/ld/pe.go
View file

@ -538,7 +538,7 @@ func (f *peFile) emitRelocations(ctxt *Link) {
if r.Xsym.Dynid < 0 {
Errorf(sym, "reloc %d to non-coff symbol %s (outer=%s) %d", r.Type, r.Sym.Name, r.Xsym.Name, r.Sym.Type)
}
if !Thearch.PEreloc1(ctxt.Arch, ctxt.Out, sym, r, int64(uint64(sym.Value+int64(r.Off))-base)) {
if !thearch.PEreloc1(ctxt.Arch, ctxt.Out, sym, r, int64(uint64(sym.Value+int64(r.Off))-base)) {
Errorf(sym, "unsupported obj reloc %d/%d to %s", r.Type, r.Siz, r.Sym.Name)
}
relocs++

2
src/cmd/link/main.go
View file

@ -32,7 +32,7 @@ import (
// Then control flow passes to ld.Main, which parses flags, makes
// some configuration decisions, and then gives the architecture
// packages a second chance to modify the linker's configuration
// via the ld.Thearch.Archinit function.
// via the ld.Arch.Archinit function.
func main() {
var arch *sys.Arch