func adddynsym(ctxt *ld.Link, s *ld.LSym) {
if s.Dynid >= 0 {
return
}
if ld.Iself {
s.Dynid = int32(ld.Nelfsym)
ld.Nelfsym++
d := ld.Linklookup(ctxt, ".dynsym", 0)
name := s.Extname
ld.Adduint32(ctxt, d, uint32(ld.Addstring(ld.Linklookup(ctxt, ".dynstr", 0), name)))
/* type */
t := ld.STB_GLOBAL << 4
if s.Cgoexport != 0 && s.Type&ld.SMASK == ld.STEXT {
t |= ld.STT_FUNC
} else {
t |= ld.STT_OBJECT
}
ld.Adduint8(ctxt, d, uint8(t))
/* reserved */
ld.Adduint8(ctxt, d, 0)
/* section where symbol is defined */
if s.Type == ld.SDYNIMPORT {
ld.Adduint16(ctxt, d, ld.SHN_UNDEF)
} else {
ld.Adduint16(ctxt, d, 1)
}
/* value */
if s.Type == ld.SDYNIMPORT {
ld.Adduint64(ctxt, d, 0)
} else {
ld.Addaddr(ctxt, d, s)
}
/* size of object */
ld.Adduint64(ctxt, d, uint64(s.Size))
if s.Cgoexport&ld.CgoExportDynamic == 0 && s.Dynimplib != "" && needlib(s.Dynimplib) != 0 {
ld.Elfwritedynent(ld.Linklookup(ctxt, ".dynamic", 0), ld.DT_NEEDED, uint64(ld.Addstring(ld.Linklookup(ctxt, ".dynstr", 0), s.Dynimplib)))
}
} else if ld.HEADTYPE == ld.Hdarwin {
ld.Diag("adddynsym: missed symbol %s (%s)", s.Name, s.Extname)
} else if ld.HEADTYPE == ld.Hwindows {
} else // already taken care of
{
ld.Diag("adddynsym: unsupported binary format")
}
}
func adddynlib(lib string) {
if needlib(lib) == 0 {
return
}
if ld.Iself {
s := ld.Linklookup(ld.Ctxt, ".dynstr", 0)
if s.Size == 0 {
ld.Addstring(s, "")
}
ld.Elfwritedynent(ld.Linklookup(ld.Ctxt, ".dynamic", 0), ld.DT_NEEDED, uint64(ld.Addstring(s, lib)))
} else {
ld.Diag("adddynlib: unsupported binary format")
}
}