Set default flags for .rodata.

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

diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index 42de0ae1b5d49e7e38f25f380383b351d2e9703e..8759f2b51ca6c369d2e52f046887ea01847d7590 100644 (file)
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -31,8 +31,8 @@ namespace {
 
 class MCMachOStreamer : public MCObjectStreamer {
 private:
-  void EmitInstToFragment(const MCInst &Inst);
-  void EmitInstToData(const MCInst &Inst);
+  virtual void EmitInstToFragment(const MCInst &Inst);
+  virtual void EmitInstToData(const MCInst &Inst);
 
 public:
   MCMachOStreamer(MCContext &Context, TargetAsmBackend &TAB,
@@ -45,6 +45,7 @@ public:
   virtual void InitSections();
   virtual void EmitLabel(MCSymbol *Symbol);
   virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
+  virtual void EmitThumbFunc(MCSymbol *Func);
   virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
   virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
   virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
@@ -98,8 +99,6 @@ public:
     //report_fatal_error("unsupported directive: '.file'");
   }
 
-  virtual void EmitInstruction(const MCInst &Inst);
-
   virtual void Finish();
 
   /// @}
@@ -151,6 +150,9 @@ void MCMachOStreamer::EmitLabel(MCSymbol *Symbol) {
 
 void MCMachOStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
   switch (Flag) {
+  case MCAF_SyntaxUnified: return; // no-op here.
+  case MCAF_Code16: return; // no-op here.
+  case MCAF_Code32: return; // no-op here.
   case MCAF_SubsectionsViaSymbols:
     getAssembler().setSubsectionsViaSymbols(true);
     return;
@@ -159,6 +161,10 @@ void MCMachOStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
   }
 }
 
+void MCMachOStreamer::EmitThumbFunc(MCSymbol *Func) {
+  // FIXME: Flag the function ISA as thumb with DW_AT_APPLE_isa.
+}
+
 void MCMachOStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
   // TODO: This is exactly the same as WinCOFFStreamer. Consider merging into
   // MCObjectStreamer.
@@ -406,50 +412,9 @@ void MCMachOStreamer::EmitInstToData(const MCInst &Inst) {
   DF->getContents().append(Code.begin(), Code.end());
 }
 
-void MCMachOStreamer::EmitInstruction(const MCInst &Inst) {
-  // Scan for values.
-  for (unsigned i = Inst.getNumOperands(); i--; )
-    if (Inst.getOperand(i).isExpr())
-      AddValueSymbols(Inst.getOperand(i).getExpr());
-
-  getCurrentSectionData()->setHasInstructions(true);
-
-  // Now that a machine instruction has been assembled into this section, make
-  // a line entry for any .loc directive that has been seen.
-  MCLineEntry::Make(this, getCurrentSection());
-
-  // If this instruction doesn't need relaxation, just emit it as data.
-  if (!getAssembler().getBackend().MayNeedRelaxation(Inst)) {
-    EmitInstToData(Inst);
-    return;
-  }
-
-  // Otherwise, if we are relaxing everything, relax the instruction as much as
-  // possible and emit it as data.
-  if (getAssembler().getRelaxAll()) {
-    MCInst Relaxed;
-    getAssembler().getBackend().RelaxInstruction(Inst, Relaxed);
-    while (getAssembler().getBackend().MayNeedRelaxation(Relaxed))
-      getAssembler().getBackend().RelaxInstruction(Relaxed, Relaxed);
-    EmitInstToData(Relaxed);
-    return;
-  }
-
-  // Otherwise emit to a separate fragment.
-  EmitInstToFragment(Inst);
-}
-
 void MCMachOStreamer::Finish() {
   // Dump out the dwarf file & directory tables and line tables.
-  if (getContext().hasDwarfFiles() &&
-      // TODO: This not enabled for 64-bit Mach-O targets.  As there are needed
-      // changes in the handling of 64-bit relocation entries for dwarf Mach-O
-      // sections that need to made.  Currently it gets
-      //   LLVM ERROR: unsupported local relocations in difference
-      // due dealing with "a-b" expressions made up for dwarf line entries
-      // because the line section has no non-local symbols thus it can't find
-      // an atom symbol for the base.
-      getAssembler().getBackend().getPointerSize() != 8) {
+  if (getContext().hasDwarfFiles()) {
     const MCSection *DwarfLineSection = getContext().getMachOSection("__DWARF",
                                          "__debug_line",
                                          MCSectionMachO::S_ATTR_DEBUG,