MC/Mach-O/x86_64: Relocations in debug sections should use local relocations
when possible.
- <rdar://problem/7934873>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103092 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MachObjectWriter.cpp b/lib/MC/MachObjectWriter.cpp
index a533ccf..f4aef96 100644
--- a/lib/MC/MachObjectWriter.cpp
+++ b/lib/MC/MachObjectWriter.cpp
@@ -548,6 +548,17 @@
MCSymbolData &SD = Asm.getSymbolData(*Symbol);
const MCSymbolData *Base = Asm.getAtom(Layout, &SD);
+ // Relocations inside debug sections always use local relocations when
+ // possible. This seems to be done because the debugger doesn't fully
+ // understand x86_64 relocation entries, and expects to find values that
+ // have already been fixed up.
+ if (Symbol->isDefined()) {
+ const MCSectionMachO &Section = static_cast<const MCSectionMachO&>(
+ Fragment->getParent()->getSection());
+ if (Section.hasAttribute(MCSectionMachO::S_ATTR_DEBUG))
+ Base = 0;
+ }
+
// x86_64 almost always uses external relocations, except when there is no
// symbol to use as a base address (a local symbol with no preceeding
// non-local symbol).