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debug/elf: add comments explaining applyRelocations for amd64/arm64

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LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/155190043
This commit is contained in:
Ian Lance Taylor 2014-10-09 14:38:45 -07:00
parent f1c0899e6f
commit 7abc8c4acc
1 changed files with 8 additions and 0 deletions
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8
src/debug/elf/file.go
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@ -564,6 +564,10 @@ func (f *File) applyRelocationsAMD64(dst []byte, rels []byte) error {
continue
}
// There are relocations, so this must be a normal
// object file, and we only look at section symbols,
// so we assume that the symbol value is 0.
switch t {
case R_X86_64_64:
if rela.Off+8 >= uint64(len(dst)) || rela.Addend < 0 {
@ -646,6 +650,10 @@ func (f *File) applyRelocationsARM64(dst []byte, rels []byte) error {
continue
}
// There are relocations, so this must be a normal
// object file, and we only look at section symbols,
// so we assume that the symbol value is 0.
switch t {
case R_AARCH64_ABS64:
if rela.Off+8 >= uint64(len(dst)) || rela.Addend < 0 {