MC/Mach-O: PCrel relocations weren't using the right base address, they are

relative to the fragment address, not its offset. This was masked by the text
section normally being at address 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98420 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index 88be99cffdd36ec8f1a99ed5aab2237826decae9..29ac8684bde3a0a3197b6d1c92f611661af45b1b 100644 (file)
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -1024,7 +1024,7 @@ bool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout, MCAsmFixup &Fixup,
   }
 
   if (IsPCRel)
-    Value -= DF->getOffset() + Fixup.Offset;
+    Value -= DF->getAddress() + Fixup.Offset;
 
   return IsResolved;
 }

diff --git a/test/MC/MachO/reloc-pcrel-offset.s b/test/MC/MachO/reloc-pcrel-offset.s
new file mode 100644 (file)
index 0000000..46dc3a9
--- /dev/null
+++ b/test/MC/MachO/reloc-pcrel-offset.s
@@ -0,0 +1,14 @@
+// RUN: llvm-mc -n -triple i386-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+// CHECK: # Relocation 0
+// CHECK: (('word-0', 0x1),
+// CHECK: ('word-1', 0x5000002)),
+// CHECK-NEXT: ])
+// CHECK: ('_section_data', '\xe8\xfb\xff\xff\xff')
+
+        .data
+        .long 0
+
+        .text
+_a:
+        call _a