Esempio n. 1
0
File: asm.go Progetto: tidatida/go
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")
	}
}
Esempio n. 2
0
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")
	}
}