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authorIgor Pashev <pashev.igor@gmail.com>2017-05-13 13:54:49 +0300
committerIgor Pashev <pashev.igor@gmail.com>2017-05-13 13:54:49 +0300
commit42156b5190f4fa150e1fab6777eb81e69d4db8c9 (patch)
tree3bf47de81cf1f89892789535a036d2d55d93a136 /debian/patches/libgo-elf-relocations-sparc64.diff
downloadgcc-6-debian.tar.gz
Imported gcc-6 (6.3.0-17)debian/6.3.0-17debian
Diffstat (limited to 'debian/patches/libgo-elf-relocations-sparc64.diff')
-rw-r--r--debian/patches/libgo-elf-relocations-sparc64.diff106
1 files changed, 106 insertions, 0 deletions
diff --git a/debian/patches/libgo-elf-relocations-sparc64.diff b/debian/patches/libgo-elf-relocations-sparc64.diff
new file mode 100644
index 0000000..8ee6460
--- /dev/null
+++ b/debian/patches/libgo-elf-relocations-sparc64.diff
@@ -0,0 +1,106 @@
+# DP: Backport r241051 from trunk
+# DP: src/libgo/go/debug/elf/testdata/go-relocation-test-gcc620-sparc64.obj is
+# DP: encoded in debian/go-relocation-test-gcc620-sparc64.obj.uue and is
+# DP: decoded at patch time.
+
+debug/elf: add sparc64 relocations
+
+This is a backport of https://go-review.googlesource.com/30870.
+
+Reviewed-on: https://go-review.googlesource.com/30916
+
+Index: b/src/libgo/go/debug/elf/file_test.go
+===================================================================
+--- a/src/libgo/go/debug/elf/file_test.go
++++ b/src/libgo/go/debug/elf/file_test.go
+@@ -473,6 +473,25 @@ var relocationTests = []relocationTest{
+ },
+ },
+ {
++ "testdata/go-relocation-test-gcc620-sparc64.obj",
++ []relocationTestEntry{
++ {0, &dwarf.Entry{
++ Offset: 0xb,
++ Tag: dwarf.TagCompileUnit,
++ Children: true,
++ Field: []dwarf.Field{
++ {Attr: dwarf.AttrProducer, Val: "GNU C11 6.2.0 20160914 -mcpu=v9 -g -fstack-protector-strong", Class: dwarf.ClassString},
++ {Attr: dwarf.AttrLanguage, Val: int64(12), Class: dwarf.ClassConstant},
++ {Attr: dwarf.AttrName, Val: "hello.c", Class: dwarf.ClassString},
++ {Attr: dwarf.AttrCompDir, Val: "/tmp", Class: dwarf.ClassString},
++ {Attr: dwarf.AttrLowpc, Val: uint64(0x0), Class: dwarf.ClassAddress},
++ {Attr: dwarf.AttrHighpc, Val: int64(0x2c), Class: dwarf.ClassConstant},
++ {Attr: dwarf.AttrStmtList, Val: int64(0), Class: dwarf.ClassLinePtr},
++ },
++ }},
++ },
++ },
++ {
+ "testdata/go-relocation-test-gcc493-mips64le.obj",
+ []relocationTestEntry{
+ {0, &dwarf.Entry{
+Index: b/src/libgo/go/debug/elf/file.go
+===================================================================
+--- a/src/libgo/go/debug/elf/file.go
++++ b/src/libgo/go/debug/elf/file.go
+@@ -598,6 +598,8 @@ func (f *File) applyRelocations(dst []by
+ return f.applyRelocationsMIPS64(dst, rels)
+ case f.Class == ELFCLASS64 && f.Machine == EM_S390:
+ return f.applyRelocationsS390x(dst, rels)
++ case f.Class == ELFCLASS64 && f.Machine == EM_SPARCV9:
++ return f.applyRelocationsSPARC64(dst, rels)
+ default:
+ return errors.New("applyRelocations: not implemented")
+ }
+@@ -951,6 +953,51 @@ func (f *File) applyRelocationsS390x(dst
+ }
+ }
+
++ return nil
++}
++
++func (f *File) applyRelocationsSPARC64(dst []byte, rels []byte) error {
++ // 24 is the size of Rela64.
++ if len(rels)%24 != 0 {
++ return errors.New("length of relocation section is not a multiple of 24")
++ }
++
++ symbols, _, err := f.getSymbols(SHT_SYMTAB)
++ if err != nil {
++ return err
++ }
++
++ b := bytes.NewReader(rels)
++ var rela Rela64
++
++ for b.Len() > 0 {
++ binary.Read(b, f.ByteOrder, &rela)
++ symNo := rela.Info >> 32
++ t := R_SPARC(rela.Info & 0xffff)
++
++ if symNo == 0 || symNo > uint64(len(symbols)) {
++ continue
++ }
++ sym := &symbols[symNo-1]
++ if SymType(sym.Info&0xf) != STT_SECTION {
++ // We don't handle non-section relocations for now.
++ continue
++ }
++
++ switch t {
++ case R_SPARC_64, R_SPARC_UA64:
++ if rela.Off+8 >= uint64(len(dst)) || rela.Addend < 0 {
++ continue
++ }
++ f.ByteOrder.PutUint64(dst[rela.Off:rela.Off+8], uint64(rela.Addend))
++ case R_SPARC_32, R_SPARC_UA32:
++ if rela.Off+4 >= uint64(len(dst)) || rela.Addend < 0 {
++ continue
++ }
++ f.ByteOrder.PutUint32(dst[rela.Off:rela.Off+4], uint32(rela.Addend))
++ }
++ }
++
+ return nil
+ }
+