Reapply r151278 with fixes.

MCize function entry label emission on PowerPC64 properly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151547 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 6 deletions

diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 505559b9c6..7e6403b6c4 100644
--- a/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -39,6 +39,7 @@
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSectionELF.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetInstrInfo.h"
@@ -49,6 +50,7 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/ELF.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "InstPrinter/PPCInstPrinter.h"
@@ -391,13 +393,21 @@ void PPCLinuxAsmPrinter::EmitFunctionEntryLabel() {
     return AsmPrinter::EmitFunctionEntryLabel();
     
   // Emit an official procedure descriptor.
-  // FIXME 64-bit SVR4: Use MCSection here!
-  OutStreamer.EmitRawText(StringRef("\t.section\t\".opd\",\"aw\""));
-  OutStreamer.EmitRawText(StringRef("\t.align 3"));
+  const MCSection *Current = OutStreamer.getCurrentSection();
+  const MCSectionELF *Section = OutStreamer.getContext().getELFSection(".opd",
+      ELF::SHT_PROGBITS, ELF::SHF_WRITE | ELF::SHF_ALLOC,
+      SectionKind::getReadOnly());
+  OutStreamer.SwitchSection(Section);
   OutStreamer.EmitLabel(CurrentFnSym);
-  OutStreamer.EmitRawText("\t.quad .L." + Twine(CurrentFnSym->getName()) +
-                          ",.TOC.@tocbase");
-  OutStreamer.EmitRawText(StringRef("\t.previous"));
+  OutStreamer.EmitValueToAlignment(8);
+  MCSymbol *Symbol1 = 
+    OutContext.GetOrCreateSymbol(".L." + Twine(CurrentFnSym->getName()));
+  MCSymbol *Symbol2 = OutContext.GetOrCreateSymbol(StringRef(".TOC.@tocbase"));
+  OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol1, OutContext),
+                        Subtarget.isPPC64() ? 8 : 4/*size*/, 0/*addrspace*/);
+  OutStreamer.EmitValue(MCSymbolRefExpr::Create(Symbol2, OutContext),
+                        Subtarget.isPPC64() ? 8 : 4/*size*/, 0/*addrspace*/);
+  OutStreamer.SwitchSection(Current);
 
   MCSymbol *RealFnSym = OutContext.GetOrCreateSymbol(
                           ".L." + Twine(CurrentFnSym->getName()));