Emit DWARF line entries for all data in the instruction stream.

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

diff --git a/lib/MC/MCELFStreamer.cpp b/lib/MC/MCELFStreamer.cpp
index a89e8a665610b23a73a9ba9783bd66eb7fd3fd3f..3f6c62c0625c423c7c54d300007bfacb1c12fe7b 100644 (file)
--- a/lib/MC/MCELFStreamer.cpp
+++ b/lib/MC/MCELFStreamer.cpp
@@ -148,8 +148,8 @@ static unsigned CombineSymbolTypes(unsigned T1, unsigned T2) {
   return T2;
 }
 
-void MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
-                                          MCSymbolAttr Attribute) {
+bool MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
+                                        MCSymbolAttr Attribute) {
   // Indirect symbols are handled differently, to match how 'as' handles
   // them. This makes writing matching .o files easier.
   if (Attribute == MCSA_IndirectSymbol) {
@@ -159,7 +159,7 @@ void MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
     ISD.Symbol = Symbol;
     ISD.SectionData = getCurrentSectionData();
     getAssembler().getIndirectSymbols().push_back(ISD);
-    return;
+    return true;
   }
 
   // Adding a symbol attribute always introduces the symbol, note that an
@@ -182,7 +182,7 @@ void MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
   case MCSA_WeakDefAutoPrivate:
   case MCSA_Invalid:
   case MCSA_IndirectSymbol:
-    llvm_unreachable("Invalid symbol attribute for ELF!");
+    return false;
 
   case MCSA_NoDeadStrip:
   case MCSA_ELF_TypeGnuUniqueObject:
@@ -251,6 +251,8 @@ void MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
     MCELF::SetVisibility(SD, ELF::STV_INTERNAL);
     break;
   }
+
+  return true;
 }
 
 void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
@@ -270,7 +272,8 @@ void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
                                                          ELF::SHF_WRITE |
                                                          ELF::SHF_ALLOC,
                                                          SectionKind::getBSS());
-    Symbol->setSection(*Section);
+
+    AssignSection(Symbol, Section);
 
     struct LocalCommon L = {&SD, Size, ByteAlignment};
     LocalCommons.push_back(L);
@@ -296,12 +299,11 @@ void MCELFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
   EmitCommonSymbol(Symbol, Size, ByteAlignment);
 }
 
-void MCELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
-                                  unsigned AddrSpace) {
+void MCELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size) {
   if (getCurrentSectionData()->isBundleLocked())
     report_fatal_error("Emitting values inside a locked bundle is forbidden");
   fixSymbolsInTLSFixups(Value);
-  MCObjectStreamer::EmitValueImpl(Value, Size, AddrSpace);
+  MCObjectStreamer::EmitValueImpl(Value, Size);
 }
 
 void MCELFStreamer::EmitValueToAlignment(unsigned ByteAlignment,
@@ -327,7 +329,22 @@ void MCELFStreamer::EmitFileDirective(StringRef Filename) {
   SD.setFlags(ELF_STT_File | ELF_STB_Local | ELF_STV_Default);
 }
 
-void  MCELFStreamer::fixSymbolsInTLSFixups(const MCExpr *expr) {
+void MCELFStreamer::EmitIdent(StringRef IdentString) {
+  const MCSection *Comment = getAssembler().getContext().getELFSection(
+      ".comment", ELF::SHT_PROGBITS, ELF::SHF_MERGE | ELF::SHF_STRINGS,
+      SectionKind::getReadOnly(), 1, "");
+  PushSection();
+  SwitchSection(Comment);
+  if (!SeenIdent) {
+    EmitIntValue(0, 1);
+    SeenIdent = true;
+  }
+  EmitBytes(IdentString);
+  EmitIntValue(0, 1);
+  PopSection();
+}
+
+void MCELFStreamer::fixSymbolsInTLSFixups(const MCExpr *expr) {
   switch (expr->getKind()) {
   case MCExpr::Target:
     cast<MCTargetExpr>(expr)->fixELFSymbolsInTLSFixups(getAssembler());
@@ -526,9 +543,7 @@ void MCELFStreamer::EmitBundleUnlock() {
   SD->setBundleLockState(MCSectionData::NotBundleLocked);
 }
 
-void MCELFStreamer::FinishImpl() {
-  EmitFrames(true);
-
+void MCELFStreamer::Flush() {
   for (std::vector<LocalCommon>::const_iterator i = LocalCommons.begin(),
                                                 e = LocalCommons.end();
        i != e; ++i) {
@@ -549,17 +564,23 @@ void MCELFStreamer::FinishImpl() {
       SectData.setAlignment(ByteAlignment);
   }
 
-  this->MCObjectStreamer::FinishImpl();
+  LocalCommons.clear();
 }
-void MCELFStreamer::EmitTCEntry(const MCSymbol &S) {
-  // Creates a R_PPC64_TOC relocation
-  MCObjectStreamer::EmitSymbolValue(&S, 8);
+
+void MCELFStreamer::FinishImpl() {
+  EmitFrames(NULL, true);
+
+  Flush();
+
+  this->MCObjectStreamer::FinishImpl();
 }
 
-MCStreamer *llvm::createELFStreamer(MCContext &Context, MCAsmBackend &MAB,
-                                    raw_ostream &OS, MCCodeEmitter *CE,
-                                    bool RelaxAll, bool NoExecStack) {
-  MCELFStreamer *S = new MCELFStreamer(Context, MAB, OS, CE);
+MCStreamer *llvm::createELFStreamer(MCContext &Context,
+                                    MCTargetStreamer *Streamer,
+                                    MCAsmBackend &MAB, raw_ostream &OS,
+                                    MCCodeEmitter *CE, bool RelaxAll,
+                                    bool NoExecStack) {
+  MCELFStreamer *S = new MCELFStreamer(Context, Streamer, MAB, OS, CE);
   if (RelaxAll)
     S->getAssembler().setRelaxAll(true);
   if (NoExecStack)