DebugInfo: Push header handling down into CompileUnit

This is a preliminary step to handling type units by abstracting over
all (type or compile) units.

llvm-svn: 193714

1 files changed, 13 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 27ba19a8964..703e2c12d8d 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -22,6 +22,8 @@
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Instructions.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCStreamer.h"
 #include "llvm/Target/Mangler.h"
 #include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/Target/TargetMachine.h"
@@ -1900,3 +1902,14 @@ DIE *CompileUnit::getOrCreateStaticMemberDIE(const DIDerivedType DT) {
 
   return StaticMemberDIE;
 }
+
+void CompileUnit::emitHeader(const MCSection *ASection,
+                             const MCSymbol *ASectionSym) {
+  Asm->OutStreamer.AddComment("DWARF version number");
+  Asm->EmitInt16(DD->getDwarfVersion());
+  Asm->OutStreamer.AddComment("Offset Into Abbrev. Section");
+  Asm->EmitSectionOffset(Asm->GetTempSymbol(ASection->getLabelBeginName()),
+                         ASectionSym);
+  Asm->OutStreamer.AddComment("Address Size (in bytes)");
+  Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
+}