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Work around gold bug http://sourceware.org/PR16794.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205416 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-04-02 12:15:20 +00:00
parent 421397ac00
commit 5d853bf42d
3 changed files with 8 additions and 3 deletions
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5
lib/MC/ELFObjectWriter.cpp
View File

@ -796,6 +796,11 @@ bool ELFObjectWriter::shouldRelocateWithSymbol(const MCSymbolRefExpr *RefA,
if (Flags & ELF::SHF_MERGE) {
if (C != 0)
return true;
// It looks like gold has a bug (http://sourceware.org/PR16794) and can
// only handle section relocations to mergeable sections if using RELA.
if (!hasRelocationAddend())
return true;
}
// Most TLS relocations use a got, so they need the symbol. Even those that

4
test/MC/ELF/basic-elf-32.s
View File

@ -46,9 +46,9 @@ main: # @main
// CHECK: Relocations [
// CHECK: Section (2) .rel.text {
// CHECK: 0x6 R_386_32 .rodata.str1.1
// CHECK: 0x6 R_386_32 .L.str1
// CHECK: 0xB R_386_PC32 puts
// CHECK: 0x12 R_386_32 .rodata.str1.1
// CHECK: 0x12 R_386_32 .L.str2
// CHECK: 0x17 R_386_PC32 puts
// CHECK: }
// CHECK: ]

2
test/MC/ELF/relocation-386.s
View File

@ -5,7 +5,7 @@
// CHECK: Relocations [
// CHECK-NEXT: Section (2) .rel.text {
// CHECK-NEXT: 0x2 R_386_GOTOFF .rodata.str1.16 0x0
// CHECK-NEXT: 0x2 R_386_GOTOFF .Lfoo 0x0
// CHECK-NEXT: 0x{{[^ ]+}} R_386_PLT32 bar2 0x0
// CHECK-NEXT: 0x{{[^ ]+}} R_386_GOTPC _GLOBAL_OFFSET_TABLE_ 0x0
// Relocation 3 (bar3@GOTOFF) is done with symbol 7 (bss)