func skiptopkgdef(b *obj.Biobuf) bool {
/* archive header */
p := obj.Brdline(b, '\n')
if p == "" {
return false
}
if obj.Blinelen(b) != 8 {
return false
}
if p != "!<arch>\n" {
return false
}
/* symbol table may be first; skip it */
sz := arsize(b, "__.GOSYMDEF")
if sz >= 0 {
obj.Bseek(b, int64(sz), 1)
} else {
obj.Bseek(b, 8, 0)
}
/* package export block is next */
sz = arsize(b, "__.PKGDEF")
if sz <= 0 {
return false
}
return true
}
func skiptopkgdef(b *obj.Biobuf) bool {
// archive header
p := obj.Brdline(b, '\n')
if p == "" {
return false
}
if obj.Blinelen(b) != 8 {
return false
}
if p != "!<arch>\n" {
return false
}
// package export block should be first
sz := arsize(b, "__.PKGDEF")
return sz > 0
}
func ldobj(f *obj.Biobuf, pkg string, length int64, pn string, file string, whence int) {
eof := obj.Boffset(f) + length
start := obj.Boffset(f)
c1 := obj.Bgetc(f)
c2 := obj.Bgetc(f)
c3 := obj.Bgetc(f)
c4 := obj.Bgetc(f)
obj.Bseek(f, start, 0)
magic := uint32(c1)<<24 | uint32(c2)<<16 | uint32(c3)<<8 | uint32(c4)
if magic == 0x7f454c46 { // \x7F E L F
ldhostobj(ldelf, f, pkg, length, pn, file)
return
}
if magic&^1 == 0xfeedface || magic&^0x01000000 == 0xcefaedfe {
ldhostobj(ldmacho, f, pkg, length, pn, file)
return
}
if c1 == 0x4c && c2 == 0x01 || c1 == 0x64 && c2 == 0x86 {
ldhostobj(ldpe, f, pkg, length, pn, file)
return
}
/* check the header */
line := obj.Brdline(f, '\n')
if line == "" {
if obj.Blinelen(f) > 0 {
Diag("%s: not an object file", pn)
return
}
Diag("truncated object file: %s", pn)
return
}
if !strings.HasPrefix(line, "go object ") {
if strings.HasSuffix(pn, ".go") {
Exitf("%cl: input %s is not .%c file (use %cg to compile .go files)", Thearch.Thechar, pn, Thearch.Thechar, Thearch.Thechar)
}
if line == Thestring {
// old header format: just $GOOS
Diag("%s: stale object file", pn)
return
}
Diag("%s: not an object file", pn)
return
}
// First, check that the basic goos, goarch, and version match.
t := fmt.Sprintf("%s %s %s ", goos, obj.Getgoarch(), obj.Getgoversion())
line = strings.TrimRight(line, "\n")
if !strings.HasPrefix(line[10:]+" ", t) && Debug['f'] == 0 {
Diag("%s: object is [%s] expected [%s]", pn, line[10:], t)
return
}
// Second, check that longer lines match each other exactly,
// so that the Go compiler and write additional information
// that must be the same from run to run.
if len(line) >= len(t)+10 {
if theline == "" {
theline = line[10:]
} else if theline != line[10:] {
Diag("%s: object is [%s] expected [%s]", pn, line[10:], theline)
return
}
}
/* skip over exports and other info -- ends with \n!\n */
import0 := obj.Boffset(f)
c1 = '\n' // the last line ended in \n
c2 = obj.Bgetc(f)
c3 = obj.Bgetc(f)
for c1 != '\n' || c2 != '!' || c3 != '\n' {
c1 = c2
c2 = c3
c3 = obj.Bgetc(f)
if c3 == obj.Beof {
Diag("truncated object file: %s", pn)
return
}
}
import1 := obj.Boffset(f)
obj.Bseek(f, import0, 0)
ldpkg(f, pkg, import1-import0-2, pn, whence) // -2 for !\n
obj.Bseek(f, import1, 0)
ldobjfile(Ctxt, f, pkg, eof-obj.Boffset(f), pn)
}