[MC] Generate a timestamp for COFF object files

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

diff --git a/lib/MC/MCObjectStreamer.cpp b/lib/MC/MCObjectStreamer.cpp
index a73c171bd1c08ce9b300cd9651f68c07bfb9a855..1da182b355953c50decf0cdae44cc4e9625e5c4c 100644 (file)
--- a/lib/MC/MCObjectStreamer.cpp
+++ b/lib/MC/MCObjectStreamer.cpp
@@ -28,7 +28,7 @@ MCObjectStreamer::MCObjectStreamer(MCContext &Context, MCAsmBackend &TAB,
                                    MCCodeEmitter *Emitter_)
     : MCStreamer(Context),
       Assembler(new MCAssembler(Context, TAB, *Emitter_,
-                                *TAB.createObjectWriter(OS), OS)),
+                                *TAB.createObjectWriter(OS))),
       EmitEHFrame(true), EmitDebugFrame(false) {}
 
 MCObjectStreamer::~MCObjectStreamer() {
@@ -124,6 +124,7 @@ void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
                                      const SMLoc &Loc) {
   MCStreamer::EmitValueImpl(Value, Size, Loc);
   MCDataFragment *DF = getOrCreateDataFragment();
+  flushPendingLabels(DF, DF->getContents().size());
 
   MCLineEntry::Make(this, getCurrentSection().first);
 
@@ -275,7 +276,6 @@ void MCObjectStreamer::EmitInstToFragment(const MCInst &Inst,
   raw_svector_ostream VecOS(Code);
   getAssembler().getEmitter().encodeInstruction(Inst, VecOS, IF->getFixups(),
                                                 STI);
-  VecOS.flush();
   IF->getContents().append(Code.begin(), Code.end());
 }
 
@@ -320,8 +320,10 @@ static const MCExpr *buildSymbolDiff(MCObjectStreamer &OS, const MCSymbol *A,
   return AddrDelta;
 }
 
-static void emitDwarfSetLineAddr(MCObjectStreamer &OS, int64_t LineDelta,
-                                 const MCSymbol *Label, int PointerSize) {
+static void emitDwarfSetLineAddr(MCObjectStreamer &OS,
+                                 MCDwarfLineTableParams Params,
+                                 int64_t LineDelta, const MCSymbol *Label,
+                                 int PointerSize) {
   // emit the sequence to set the address
   OS.EmitIntValue(dwarf::DW_LNS_extended_op, 1);
   OS.EmitULEB128IntValue(PointerSize + 1);
@@ -329,7 +331,7 @@ static void emitDwarfSetLineAddr(MCObjectStreamer &OS, int64_t LineDelta,
   OS.EmitSymbolValue(Label, PointerSize);
 
   // emit the sequence for the LineDelta (from 1) and a zero address delta.
-  MCDwarfLineAddr::Emit(&OS, LineDelta, 0);
+  MCDwarfLineAddr::Emit(&OS, Params, LineDelta, 0);
 }
 
 void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
@@ -337,13 +339,15 @@ void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
                                                 const MCSymbol *Label,
                                                 unsigned PointerSize) {
   if (!LastLabel) {
-    emitDwarfSetLineAddr(*this, LineDelta, Label, PointerSize);
+    emitDwarfSetLineAddr(*this, Assembler->getDWARFLinetableParams(), LineDelta,
+                         Label, PointerSize);
     return;
   }
   const MCExpr *AddrDelta = buildSymbolDiff(*this, Label, LastLabel);
   int64_t Res;
   if (AddrDelta->evaluateAsAbsolute(Res, getAssembler())) {
-    MCDwarfLineAddr::Emit(this, LineDelta, Res);
+    MCDwarfLineAddr::Emit(this, Assembler->getDWARFLinetableParams(), LineDelta,
+                          Res);
     return;
   }
   insert(new MCDwarfLineAddrFragment(LineDelta, *AddrDelta));
@@ -362,7 +366,9 @@ void MCObjectStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
 
 void MCObjectStreamer::EmitBytes(StringRef Data) {
   MCLineEntry::Make(this, getCurrentSection().first);
-  getOrCreateDataFragment()->getContents().append(Data.begin(), Data.end());
+  MCDataFragment *DF = getOrCreateDataFragment();
+  flushPendingLabels(DF, DF->getContents().size());
+  DF->getContents().append(Data.begin(), Data.end());
 }
 
 void MCObjectStreamer::EmitValueToAlignment(unsigned ByteAlignment,
@@ -410,6 +416,7 @@ bool MCObjectStreamer::EmitValueToOffset(const MCExpr *Offset,
 // Associate GPRel32 fixup with data and resize data area
 void MCObjectStreamer::EmitGPRel32Value(const MCExpr *Value) {
   MCDataFragment *DF = getOrCreateDataFragment();
+  flushPendingLabels(DF, DF->getContents().size());
 
   DF->getFixups().push_back(MCFixup::create(DF->getContents().size(), 
                                             Value, FK_GPRel_4));
@@ -419,6 +426,7 @@ void MCObjectStreamer::EmitGPRel32Value(const MCExpr *Value) {
 // Associate GPRel32 fixup with data and resize data area
 void MCObjectStreamer::EmitGPRel64Value(const MCExpr *Value) {
   MCDataFragment *DF = getOrCreateDataFragment();
+  flushPendingLabels(DF, DF->getContents().size());
 
   DF->getFixups().push_back(MCFixup::create(DF->getContents().size(), 
                                             Value, FK_GPRel_4));
@@ -428,7 +436,9 @@ void MCObjectStreamer::EmitGPRel64Value(const MCExpr *Value) {
 void MCObjectStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
   // FIXME: A MCFillFragment would be more memory efficient but MCExpr has
   //        problems evaluating expressions across multiple fragments.
-  getOrCreateDataFragment()->getContents().append(NumBytes, FillValue);
+  MCDataFragment *DF = getOrCreateDataFragment();
+  flushPendingLabels(DF, DF->getContents().size());
+  DF->getContents().append(NumBytes, FillValue);
 }
 
 void MCObjectStreamer::EmitZeros(uint64_t NumBytes) {
@@ -444,7 +454,7 @@ void MCObjectStreamer::FinishImpl() {
     MCGenDwarfInfo::Emit(this);
 
   // Dump out the dwarf file & directory tables and line tables.
-  MCDwarfLineTable::Emit(this);
+  MCDwarfLineTable::Emit(this, getAssembler().getDWARFLinetableParams());
 
   flushPendingLabels(nullptr);
   getAssembler().Finish();