MCAssembler: Move ApplyFixup to the TargetAsmBackend, this is a target specific not object writer specific task.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98947 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index d7a9e1a..fec5638 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -9,6 +9,8 @@
#include "llvm/Target/TargetAsmBackend.h"
#include "X86.h"
+#include "X86FixupKinds.h"
+#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/Target/TargetRegistry.h"
#include "llvm/Target/TargetAsmBackend.h"
@@ -16,10 +18,34 @@
namespace {
+static unsigned getFixupKindLog2Size(unsigned Kind) {
+ switch (Kind) {
+ default: assert(0 && "invalid fixup kind!");
+ case X86::reloc_pcrel_1byte:
+ case FK_Data_1: return 0;
+ case FK_Data_2: return 1;
+ case X86::reloc_pcrel_4byte:
+ case X86::reloc_riprel_4byte:
+ case X86::reloc_riprel_4byte_movq_load:
+ case FK_Data_4: return 2;
+ case FK_Data_8: return 3;
+ }
+}
+
class X86AsmBackend : public TargetAsmBackend {
public:
X86AsmBackend(const Target &T)
: TargetAsmBackend(T) {}
+
+ void ApplyFixup(const MCAsmFixup &Fixup, MCDataFragment &DF,
+ uint64_t Value) const {
+ unsigned Size = 1 << getFixupKindLog2Size(Fixup.Kind);
+
+ assert(Fixup.Offset + Size <= DF.getContents().size() &&
+ "Invalid fixup offset!");
+ for (unsigned i = 0; i != Size; ++i)
+ DF.getContents()[Fixup.Offset + i] = uint8_t(Value >> (i * 8));
+ }
};
class DarwinX86AsmBackend : public X86AsmBackend {