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debug/elf: add sparc64 relocations
Change-Id: I1a2504ad9ca8607588d2d366598115fe360435b5 Reviewed-on: https://go-review.googlesource.com/30870 Reviewed-by: Ian Lance Taylor <iant@golang.org>
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@ -598,6 +598,8 @@ func (f *File) applyRelocations(dst []byte, rels []byte) error {
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return f.applyRelocationsMIPS64(dst, rels)
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case f.Class == ELFCLASS64 && f.Machine == EM_S390:
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return f.applyRelocationss390x(dst, rels)
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case f.Class == ELFCLASS64 && f.Machine == EM_SPARCV9:
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return f.applyRelocationsSPARC64(dst, rels)
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default:
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return errors.New("applyRelocations: not implemented")
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}
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@ -962,6 +964,51 @@ func (f *File) applyRelocationss390x(dst []byte, rels []byte) error {
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return nil
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}
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func (f *File) applyRelocationsSPARC64(dst []byte, rels []byte) error {
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// 24 is the size of Rela64.
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if len(rels)%24 != 0 {
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return errors.New("length of relocation section is not a multiple of 24")
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}
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symbols, _, err := f.getSymbols(SHT_SYMTAB)
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if err != nil {
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return err
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}
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b := bytes.NewReader(rels)
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var rela Rela64
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for b.Len() > 0 {
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binary.Read(b, f.ByteOrder, &rela)
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symNo := rela.Info >> 32
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t := R_SPARC(rela.Info & 0xffff)
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if symNo == 0 || symNo > uint64(len(symbols)) {
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continue
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}
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sym := &symbols[symNo-1]
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if SymType(sym.Info&0xf) != STT_SECTION {
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// We don't handle non-section relocations for now.
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continue
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}
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switch t {
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case R_SPARC_64, R_SPARC_UA64:
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if rela.Off+8 >= uint64(len(dst)) || rela.Addend < 0 {
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continue
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}
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f.ByteOrder.PutUint64(dst[rela.Off:rela.Off+8], uint64(rela.Addend))
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case R_SPARC_32, R_SPARC_UA32:
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if rela.Off+4 >= uint64(len(dst)) || rela.Addend < 0 {
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continue
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}
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f.ByteOrder.PutUint32(dst[rela.Off:rela.Off+4], uint32(rela.Addend))
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}
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}
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return nil
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}
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func (f *File) DWARF() (*dwarf.Data, error) {
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// sectionData gets the data for s, checks its size, and
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// applies any applicable relations.
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@ -491,6 +491,25 @@ var relocationTests = []relocationTest{
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}},
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},
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},
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{
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"testdata/go-relocation-test-gcc620-sparc64.obj",
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[]relocationTestEntry{
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{0, &dwarf.Entry{
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Offset: 0xb,
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Tag: dwarf.TagCompileUnit,
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Children: true,
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Field: []dwarf.Field{
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{Attr: dwarf.AttrProducer, Val: "GNU C11 6.2.0 20160914 -mcpu=v9 -g -fstack-protector-strong", Class: dwarf.ClassString},
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{Attr: dwarf.AttrLanguage, Val: int64(12), Class: dwarf.ClassConstant},
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{Attr: dwarf.AttrName, Val: "hello.c", Class: dwarf.ClassString},
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{Attr: dwarf.AttrCompDir, Val: "/tmp", Class: dwarf.ClassString},
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{Attr: dwarf.AttrLowpc, Val: uint64(0x0), Class: dwarf.ClassAddress},
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{Attr: dwarf.AttrHighpc, Val: int64(0x2c), Class: dwarf.ClassConstant},
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{Attr: dwarf.AttrStmtList, Val: int64(0), Class: dwarf.ClassLinePtr},
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},
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}},
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},
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},
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{
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"testdata/go-relocation-test-gcc493-mips64le.obj",
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[]relocationTestEntry{
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BIN
src/debug/elf/testdata/go-relocation-test-gcc620-sparc64.obj
vendored
Normal file
BIN
src/debug/elf/testdata/go-relocation-test-gcc620-sparc64.obj
vendored
Normal file
Binary file not shown.
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