[MC] Generate a timestamp for COFF object files

[oota-llvm.git] / lib / MC / MCELFObjectTargetWriter.cpp

diff --git a/lib/MC/MCELFObjectTargetWriter.cpp b/lib/MC/MCELFObjectTargetWriter.cpp
index 12a02a9e97405f77df9efb28f2817f48a794670c..bc0ba85a8ff62c10673968484f4115fd54ad4626 100644 (file)
--- a/lib/MC/MCELFObjectTargetWriter.cpp
+++ b/lib/MC/MCELFObjectTargetWriter.cpp
@@ -7,17 +7,45 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/ADT/STLExtras.h"
 #include "llvm/MC/MCELFObjectWriter.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCValue.h"
 
 using namespace llvm;
 
 MCELFObjectTargetWriter::MCELFObjectTargetWriter(bool Is64Bit_,
-                                                 Triple::OSType OSType_,
+                                                 uint8_t OSABI_,
                                                  uint16_t EMachine_,
-                                                 bool HasRelocationAddend_)
-  : OSType(OSType_), EMachine(EMachine_),
-    HasRelocationAddend(HasRelocationAddend_), Is64Bit(Is64Bit_) {
+                                                 bool HasRelocationAddend_,
+                                                 bool IsN64_)
+  : OSABI(OSABI_), EMachine(EMachine_),
+    HasRelocationAddend(HasRelocationAddend_), Is64Bit(Is64Bit_),
+    IsN64(IsN64_){
 }
 
-MCELFObjectTargetWriter::~MCELFObjectTargetWriter() {
+bool MCELFObjectTargetWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
+                                                      unsigned Type) const {
+  return false;
+}
+
+// ELF doesn't require relocations to be in any order. We sort by the Offset,
+// just to match gnu as for easier comparison. The use type is an arbitrary way
+// of making the sort deterministic.
+static int cmpRel(const ELFRelocationEntry *AP, const ELFRelocationEntry *BP) {
+  const ELFRelocationEntry &A = *AP;
+  const ELFRelocationEntry &B = *BP;
+  if (A.Offset != B.Offset)
+    return B.Offset - A.Offset;
+  if (B.Type != A.Type)
+    return A.Type - B.Type;
+  //llvm_unreachable("ELFRelocs might be unstable!");
+  return 0;
+}
+
+
+void
+MCELFObjectTargetWriter::sortRelocs(const MCAssembler &Asm,
+                                    std::vector<ELFRelocationEntry> &Relocs) {
+  array_pod_sort(Relocs.begin(), Relocs.end(), cmpRel);
 }