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cmd/link: move Library type to sym package

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For #22095

Change-Id: I2cb0d3e0aaf9f97952cf8dda0e99a4379e275020
Reviewed-on: https://go-review.googlesource.com/68332
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
David Crawshaw 2017-10-04 18:13:35 -04:00
parent 475d92ba4d
commit a910fe2c83
9 changed files with 59 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -123,7 +123,7 @@ func hostArchive(ctxt *Link, name string) {
pname := fmt.Sprintf("%s(%s)", name, arhdr.name)
l = atolwhex(arhdr.size)
libgcc := Library{Pkg: "libgcc"}
libgcc := sym.Library{Pkg: "libgcc"}
h := ldobj(ctxt, f, &libgcc, l, pname, name, ArchiveObj)
f.Seek(h.off, 0)
h.ld(ctxt, f, h.pkg, h.length, h.pn)

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

@ -2112,7 +2112,7 @@ func (ctxt *Link) doelf() {
sort.Sort(byPkg(ctxt.Library))
h := sha1.New()
for _, l := range ctxt.Library {
io.WriteString(h, l.hash)
io.WriteString(h, l.Hash)
}
addgonote(ctxt, ".note.go.abihash", ELF_NOTE_GOABIHASH_TAG, h.Sum([]byte{}))
addgonote(ctxt, ".note.go.pkg-list", ELF_NOTE_GOPKGLIST_TAG, pkglistfornote)

7
src/cmd/link/internal/ld/ld.go
View File

@ -32,6 +32,7 @@
package ld
import (
"cmd/link/internal/sym"
"io/ioutil"
"log"
"os"
@ -147,7 +148,7 @@ func findlib(ctxt *Link, lib string) (string, bool) {
return pname, isshlib
}
func addlib(ctxt *Link, src string, obj string, lib string) *Library {
func addlib(ctxt *Link, src string, obj string, lib string) *sym.Library {
pkg := pkgname(lib)
// already loaded?
@ -175,7 +176,7 @@ func addlib(ctxt *Link, src string, obj string, lib string) *Library {
* pkg: package import path, e.g. container/vector
* shlib: path to shared library, or .shlibname file holding path
*/
func addlibpath(ctxt *Link, srcref string, objref string, file string, pkg string, shlib string) *Library {
func addlibpath(ctxt *Link, srcref string, objref string, file string, pkg string, shlib string) *sym.Library {
if l := ctxt.LibraryByPkg[pkg]; l != nil {
return l
}
@ -184,7 +185,7 @@ func addlibpath(ctxt *Link, srcref string, objref string, file string, pkg strin
ctxt.Logf("%5.2f addlibpath: srcref: %s objref: %s file: %s pkg: %s shlib: %s\n", Cputime(), srcref, objref, file, pkg, shlib)
}
l := &Library{}
l := &sym.Library{}
ctxt.LibraryByPkg[pkg] = l
ctxt.Library = append(ctxt.Library, l)
l.Objref = objref

26
src/cmd/link/internal/ld/lib.go
View File

@ -265,7 +265,7 @@ func errorexit() {
Exit(0)
}
func loadinternal(ctxt *Link, name string) *Library {
func loadinternal(ctxt *Link, name string) *sym.Library {
if *FlagLinkshared && ctxt.PackageShlib != nil {
if shlib := ctxt.PackageShlib[name]; shlib != "" {
return addlibpath(ctxt, "internal", "internal", "", name, shlib)
@ -608,8 +608,8 @@ func (ctxt *Link) loadlib() {
if isRuntimeDepPkg(lib.Pkg) != doInternal {
continue
}
ctxt.Textp = append(ctxt.Textp, lib.textp...)
for _, s := range lib.dupTextSyms {
ctxt.Textp = append(ctxt.Textp, lib.Textp...)
for _, s := range lib.DupTextSyms {
if !s.Attr.OnList() {
ctxt.Textp = append(ctxt.Textp, s)
s.Attr |= sym.AttrOnList
@ -708,7 +708,7 @@ func nextar(bp *bio.Reader, off int64, a *ArHdr) int64 {
return arsize + SAR_HDR
}
func genhash(ctxt *Link, lib *Library) {
func genhash(ctxt *Link, lib *sym.Library) {
f, err := bio.Open(lib.File)
if err != nil {
Errorf(nil, "cannot open file %s for hash generation: %v", lib.File, err)
@ -762,10 +762,10 @@ func genhash(ctxt *Link, lib *Library) {
}
h.Write(pkgDefBytes[0:firstEOL])
h.Write(pkgDefBytes[firstDoubleDollar : firstDoubleDollar+secondDoubleDollar])
lib.hash = hex.EncodeToString(h.Sum(nil))
lib.Hash = hex.EncodeToString(h.Sum(nil))
}
func objfile(ctxt *Link, lib *Library) {
func objfile(ctxt *Link, lib *sym.Library) {
pkg := objabi.PathToPrefix(lib.Pkg)
if ctxt.Debugvlog > 1 {
@ -1369,7 +1369,7 @@ func hostlinkArchArgs(arch *sys.Arch) []string {
// ldobj loads an input object. If it is a host object (an object
// compiled by a non-Go compiler) it returns the Hostobj pointer. If
// it is a Go object, it returns nil.
func ldobj(ctxt *Link, f *bio.Reader, lib *Library, length int64, pn string, file string, whence int) *Hostobj {
func ldobj(ctxt *Link, f *bio.Reader, lib *sym.Library, length int64, pn string, file string, whence int) *Hostobj {
pkg := objabi.PathToPrefix(lib.Pkg)
eof := f.Offset() + length
@ -1460,7 +1460,7 @@ func ldobj(ctxt *Link, f *bio.Reader, lib *Library, length int64, pn string, fil
f.Seek(import1, 0)
LoadObjFile(ctxt.Arch, ctxt.Syms, f, lib, eof-f.Offset(), pn)
lib.addImports(ctxt, pn)
addImports(ctxt, lib, pn)
return nil
}
@ -2199,16 +2199,16 @@ const (
visited
)
func postorder(libs []*Library) []*Library {
order := make([]*Library, 0, len(libs)) // hold the result
mark := make(map[*Library]markKind, len(libs))
func postorder(libs []*sym.Library) []*sym.Library {
order := make([]*sym.Library, 0, len(libs)) // hold the result
mark := make(map[*sym.Library]markKind, len(libs))
for _, lib := range libs {
dfs(lib, mark, &order)
}
return order
}
func dfs(lib *Library, mark map[*Library]markKind, order *[]*Library) {
func dfs(lib *sym.Library, mark map[*sym.Library]markKind, order *[]*sym.Library) {
if mark[lib] == visited {
return
}
@ -2216,7 +2216,7 @@ func dfs(lib *Library, mark map[*Library]markKind, order *[]*Library) {
panic("found import cycle while visiting " + lib.Pkg)
}
mark[lib] = visiting
for _, i := range lib.imports {
for _, i := range lib.Imports {
dfs(i, mark, order)
}
mark[lib] = visited

29
src/cmd/link/internal/ld/link.go
View File

@ -62,8 +62,8 @@ type Link struct {
Tlsg *sym.Symbol
Libdir []string
Library []*Library
LibraryByPkg map[string]*Library
Library []*sym.Library
LibraryByPkg map[string]*sym.Library
Shlibs []Shlib
Tlsoffset int
Textp []*sym.Symbol
@ -98,32 +98,15 @@ func (l *Link) Logf(format string, args ...interface{}) {
l.Bso.Flush()
}
type Library struct {
Objref string
Srcref string
File string
Pkg string
Shlib string
hash string
importStrings []string
imports []*Library
textp []*sym.Symbol // text symbols defined in this library
dupTextSyms []*sym.Symbol // dupok text symbols defined in this library
}
func (l Library) String() string {
return l.Pkg
}
func (l *Library) addImports(ctxt *Link, pn string) {
func addImports(ctxt *Link, l *sym.Library, pn string) {
pkg := objabi.PathToPrefix(l.Pkg)
for _, importStr := range l.importStrings {
for _, importStr := range l.ImportStrings {
lib := addlib(ctxt, pkg, pn, importStr)
if lib != nil {
l.imports = append(l.imports, lib)
l.Imports = append(l.Imports, lib)
}
}
l.importStrings = nil
l.ImportStrings = nil
}
type Pciter struct {

12
src/cmd/link/internal/ld/objfile.go
View File

@ -32,7 +32,7 @@ type objReader struct {
rd *bufio.Reader
arch *sys.Arch
syms *sym.Symbols
lib *Library
lib *sym.Library
pn string
dupSym *sym.Symbol
localSymVersion int
@ -51,7 +51,7 @@ type objReader struct {
file []*sym.Symbol
}
func LoadObjFile(arch *sys.Arch, syms *sym.Symbols, f *bio.Reader, lib *Library, length int64, pn string) {
func LoadObjFile(arch *sys.Arch, syms *sym.Symbols, f *bio.Reader, lib *sym.Library, length int64, pn string) {
start := f.Offset()
r := &objReader{
rd: f.Reader,
@ -88,7 +88,7 @@ func (r *objReader) loadObjFile() {
if lib == "" {
break
}
r.lib.importStrings = append(r.lib.importStrings, lib)
r.lib.ImportStrings = append(r.lib.ImportStrings, lib)
}
// sym.Symbol references
@ -319,14 +319,14 @@ overwrite:
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Attr |= sym.AttrOnList
r.lib.textp = append(r.lib.textp, s)
r.lib.Textp = append(r.lib.Textp, s)
} else {
// there may ba a dup in another package
// put into a temp list and add to text later
if !isdup {
r.lib.dupTextSyms = append(r.lib.dupTextSyms, s)
r.lib.DupTextSyms = append(r.lib.DupTextSyms, s)
} else {
r.lib.dupTextSyms = append(r.lib.dupTextSyms, dup)
r.lib.DupTextSyms = append(r.lib.DupTextSyms, dup)
}
}
}

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

@ -43,7 +43,7 @@ func linknew(arch *sys.Arch) *Link {
Syms: sym.NewSymbols(),
Out: &OutBuf{arch: arch},
Arch: arch,
LibraryByPkg: make(map[string]*Library),
LibraryByPkg: make(map[string]*sym.Library),
}
if objabi.GOARCH != arch.Name {

10
src/cmd/link/internal/ld/symtab.go
View File

@ -250,7 +250,7 @@ func Asmplan9sym(ctxt *Link) {
var symt *sym.Symbol
type byPkg []*Library
type byPkg []*sym.Library
func (libs byPkg) Len() int {
return len(libs)
@ -500,13 +500,13 @@ func (ctxt *Link) symtab() {
s := ctxt.Syms.Lookup("go.link.pkghashbytes."+l.Pkg, 0)
s.Attr |= sym.AttrReachable
s.Type = sym.SRODATA
s.Size = int64(len(l.hash))
s.P = []byte(l.hash)
s.Size = int64(len(l.Hash))
s.P = []byte(l.Hash)
str := ctxt.Syms.Lookup("go.link.pkghash."+l.Pkg, 0)
str.Attr |= sym.AttrReachable
str.Type = sym.SRODATA
str.AddAddr(ctxt.Arch, s)
str.AddUint(ctxt.Arch, uint64(len(l.hash)))
str.AddUint(ctxt.Arch, uint64(len(l.Hash)))
}
}
@ -592,7 +592,7 @@ func (ctxt *Link) symtab() {
// pkghashes[i].name
addgostring(ctxt, pkghashes, fmt.Sprintf("go.link.pkgname.%d", i), l.Pkg)
// pkghashes[i].linktimehash
addgostring(ctxt, pkghashes, fmt.Sprintf("go.link.pkglinkhash.%d", i), string(l.hash))
addgostring(ctxt, pkghashes, fmt.Sprintf("go.link.pkglinkhash.%d", i), string(l.Hash))
// pkghashes[i].runtimehash
hash := ctxt.Syms.ROLookup("go.link.pkghash."+l.Pkg, 0)
pkghashes.AddAddr(ctxt.Arch, hash)

22
src/cmd/link/internal/sym/library.go Normal file
View File

@ -0,0 +1,22 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sym
type Library struct {
Objref string
Srcref string
File string
Pkg string
Shlib string
Hash string
ImportStrings []string
Imports []*Library
Textp []*Symbol // text symbols defined in this library
DupTextSyms []*Symbol // dupok text symbols defined in this library
}
func (l Library) String() string {
return l.Pkg
}