Implement a very basic PIC case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115454 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-10-03 00:46:57 +00:00
parent 11bfe3e5bf
commit 9d8b7555cd
2 changed files with 32 additions and 0 deletions

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@ -535,6 +535,13 @@ void ELFObjectWriterImpl::RecordRelocation(const MCAssembler &Asm,
MCSymbolData &SD = Asm.getSymbolData(*Symbol);
MCFragment *F = SD.getFragment();
if (const MCSymbolRefExpr *RefB = Target.getSymB()) {
const MCSymbol &SymbolB = RefB->getSymbol();
MCSymbolData &SDB = Asm.getSymbolData(SymbolB);
IsPCRel = true;
Value += Fixup.getOffset() - Layout.getSymbolAddress(&SDB);
}
// Check that this case has already been fully resolved before we get
// here.
if (Symbol->isDefined() && !SD.isExternal() &&

25
test/MC/ELF/pic-diff.s Normal file
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@ -0,0 +1,25 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump | FileCheck %s
// CHECK: # Symbol 5
// CHECK-NEXT: (('st_name', 5) # 'baz'
// CHECK-NEXT: ('st_bind', 1)
// CHECK-NEXT: ('st_type', 0)
// CHECK-NEXT: ('st_other', 0)
// CHECK-NEXT: ('st_shndx', 0)
// CHECK-NEXT: ('st_value', 0)
// CHECK-NEXT: ('st_size', 0)
// CHECK-NEXT: ),
// CHECK: ('_relocations', [
// CHECK-NEXT: # Relocation 0
// CHECK-NEXT: (('r_offset', 12)
// CHECK-NEXT: ('r_sym', 5)
// CHECK-NEXT: ('r_type', 2)
// CHECK-NEXT: ('r_addend', 8)
// CHECK-NEXT: ),
// CHECK-NEXT: ])
.zero 4
foo:
.zero 8
.long baz - foo