func ldobjfile(ctxt *Link, f *obj.Biobuf, pkg string, length int64, pn string) {
start := obj.Boffset(f)
ctxt.IncVersion()
var buf [8]uint8
obj.Bread(f, buf[:])
if string(buf[:]) != startmagic {
log.Fatalf("%s: invalid file start %x %x %x %x %x %x %x %x", pn, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7])
}
c := obj.Bgetc(f)
if c != 1 {
log.Fatalf("%s: invalid file version number %d", pn, c)
}
var lib string
for {
lib = rdstring(f)
if lib == "" {
break
}
addlib(ctxt, pkg, pn, lib)
}
ctxt.CurRefs = []*LSym{nil} // zeroth ref is nil
for {
c, err := f.Peek(1)
if err != nil {
log.Fatalf("%s: peeking: %v", pn, err)
}
if c[0] == 0xff {
obj.Bgetc(f)
break
}
readref(ctxt, f, pkg, pn)
}
dataLength := rdint64(f)
data := make([]byte, dataLength)
obj.Bread(f, data)
for {
c, err := f.Peek(1)
if err != nil {
log.Fatalf("%s: peeking: %v", pn, err)
}
if c[0] == 0xff {
break
}
readsym(ctxt, f, &data, pkg, pn)
}
buf = [8]uint8{}
obj.Bread(f, buf[:])
if string(buf[:]) != endmagic {
log.Fatalf("%s: invalid file end", pn)
}
if obj.Boffset(f) != start+length {
log.Fatalf("%s: unexpected end at %d, want %d", pn, int64(obj.Boffset(f)), int64(start+length))
}
}
func ldobjfile(ctxt *Link, f *obj.Biobuf, pkg string, length int64, pn string) {
start := obj.Boffset(f)
ctxt.Version++
var buf [8]uint8
obj.Bread(f, buf[:])
if string(buf[:]) != startmagic {
log.Fatalf("%s: invalid file start %x %x %x %x %x %x %x %x", pn, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7])
}
c := obj.Bgetc(f)
if c != 1 {
log.Fatalf("%s: invalid file version number %d", pn, c)
}
var lib string
for {
lib = rdstring(f)
if lib == "" {
break
}
addlib(ctxt, pkg, pn, lib)
}
for {
c, err := f.Peek(1)
if err != nil {
log.Fatalf("%s: peeking: %v", pn, err)
}
if c[0] == 0xff {
break
}
readsym(ctxt, f, pkg, pn)
}
buf = [8]uint8{}
obj.Bread(f, buf[:])
if string(buf[:]) != endmagic {
log.Fatalf("%s: invalid file end", pn)
}
if obj.Boffset(f) != start+length {
log.Fatalf("%s: unexpected end at %d, want %d", pn, int64(obj.Boffset(f)), int64(start+length))
}
}
func rdint64(f *obj.Biobuf) int64 {
r := f.Reader()
uv := uint64(0)
for shift := uint(0); ; shift += 7 {
if shift >= 64 {
log.Fatalf("corrupt input")
}
c, err := r.ReadByte()
if err != nil {
log.Fatalln("error reading input: ", err)
}
uv |= uint64(c&0x7F) << shift
if c&0x80 == 0 {
break
}
}
return int64(uv>>1) ^ (int64(uint64(uv)<<63) >> 63)
}