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[dev.link] cmd/link: port xcoff to new loader syntax

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Change-Id: I074dd726640f2bcf7aa50b5e10e0b3a278489cd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/216038
Run-TryBot: Jeremy Faller <jeremy@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Jeremy Faller 2020-01-23 14:41:34 -05:00
parent 76d0977745
commit 8896a6b8aa
3 changed files with 25 additions and 25 deletions
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2
src/cmd/link/internal/ld/lib.go
View File

@ -1898,7 +1898,7 @@ func ldobj(ctxt *Link, f *bio.Reader, lib *sym.Library, length int64, pn string,
Errorf(nil, "%v", err)
return
}
ctxt.Textp = append(ctxt.Textp, textp...)
ctxt.Textp2 = append(ctxt.Textp2, textp...)
}
return ldhostobj(ldxcoff, ctxt.HeadType, f, pkg, length, pn, file)
}

2
src/cmd/link/internal/ld/main.go
View File

@ -98,7 +98,7 @@ var (
)
func (ctxt *Link) loaderSupport() bool {
return ctxt.IsELF || ctxt.HeadType == objabi.Hdarwin
return ctxt.IsELF || ctxt.HeadType == objabi.Hdarwin || ctxt.HeadType == objabi.Haix
}
// Main is the main entry point for the linker code.

46
src/cmd/link/internal/loadxcoff/ldxcoff.go
View File

@ -19,7 +19,7 @@ import (
// ldSection is an XCOFF section with its symbols.
type ldSection struct {
xcoff.Section
sym *sym.Symbol
sym loader.Sym
}
// TODO(brainman): maybe just add ReadAt method to bio.Reader instead of creating xcoffBiobuf
@ -41,8 +41,8 @@ func (f *xcoffBiobuf) ReadAt(p []byte, off int64) (int, error) {
// loads the Xcoff file pn from f.
// Symbols are written into loader, and a slice of the text symbols is returned.
func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Reader, pkg string, length int64, pn string) (textp []*sym.Symbol, err error) {
errorf := func(str string, args ...interface{}) ([]*sym.Symbol, error) {
func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Reader, pkg string, length int64, pn string) (textp []loader.Sym, err error) {
errorf := func(str string, args ...interface{}) ([]loader.Sym, error) {
return nil, fmt.Errorf("loadxcoff: %v: %v", pn, fmt.Sprintf(str, args...))
}
@ -62,29 +62,30 @@ func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Read
lds := new(ldSection)
lds.Section = *sect
name := fmt.Sprintf("%s(%s)", pkg, lds.Name)
s := l.LookupOrCreate(name, localSymVersion)
symbol := l.LookupOrCreateSym(name, localSymVersion)
s, _ := l.MakeSymbolUpdater(symbol)
switch lds.Type {
default:
return errorf("unrecognized section type 0x%x", lds.Type)
case xcoff.STYP_TEXT:
s.Type = sym.STEXT
s.SetType(sym.STEXT)
case xcoff.STYP_DATA:
s.Type = sym.SNOPTRDATA
s.SetType(sym.SNOPTRDATA)
case xcoff.STYP_BSS:
s.Type = sym.SNOPTRBSS
s.SetType(sym.SNOPTRBSS)
}
s.Size = int64(lds.Size)
if s.Type != sym.SNOPTRBSS {
s.SetSize(int64(lds.Size))
if s.Type() != sym.SNOPTRBSS {
data, err := lds.Section.Data()
if err != nil {
return nil, err
}
s.P = data
s.SetData(data)
}
lds.sym = s
lds.sym = symbol
ldSections = append(ldSections, lds)
}
@ -100,14 +101,14 @@ func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Read
continue
}
s := l.LookupOrCreate(sx.Name, 0)
s := l.LookupOrCreateSym(sx.Name, 0)
// Text symbol
if s.Type == sym.STEXT {
if s.Attr.OnList() {
return errorf("symbol %s listed multiple times", s.Name)
if l.SymType(s) == sym.STEXT {
if l.AttrOnList(s) {
return errorf("symbol %s listed multiple times", l.SymName(s))
}
s.Attr |= sym.AttrOnList
l.SetAttrOnList(s, true)
textp = append(textp, s)
}
}
@ -118,11 +119,11 @@ func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Read
if sect.Type != xcoff.STYP_TEXT && sect.Type != xcoff.STYP_DATA {
continue
}
rs := make([]sym.Reloc, sect.Nreloc)
rs := make([]loader.Reloc, sect.Nreloc)
for i, rx := range sect.Relocs {
r := &rs[i]
r.Sym = l.LookupOrCreate(rx.Symbol.Name, 0)
r.Sym = l.LookupOrCreateSym(rx.Symbol.Name, 0)
if uint64(int32(rx.VirtualAddress)) != rx.VirtualAddress {
return errorf("virtual address of a relocation is too big: 0x%x", rx.VirtualAddress)
}
@ -136,20 +137,19 @@ func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, input *bio.Read
if rx.Length != 64 {
return errorf("section %s: relocation R_POS has length different from 64: %d", sect.Name, rx.Length)
}
r.Siz = 8
r.Size = 8
r.Type = objabi.R_CONST
r.Add = int64(rx.Symbol.Value)
case xcoff.R_RBR:
r.Siz = 4
r.Size = 4
r.Type = objabi.R_CALLPOWER
r.Add = 0 //
}
}
s := sect.sym
s.R = rs
s.R = s.R[:sect.Nreloc]
bld, _ := l.MakeSymbolUpdater(sect.sym)
bld.SetRelocs(rs[:sect.Nreloc])
}
return textp, nil