MC: Add a .debug section that we'll soon use to emit debug info into COFF files

llvm-svn: 200285

llvm/include/llvm/MC/MCObjectFileInfo.h

@@ -129,6 +129,8 @@ protected:
   const MCSection *DwarfGnuPubNamesSection;
   const MCSection *DwarfGnuPubTypesSection;
 
+  const MCSection *COFFDebugSymbolsSection;
+
   // Extra TLS Variable Data section.  If the target needs to put additional
   // information for a TLS variable, it'll go here.
   const MCSection *TLSExtraDataSection;
@@ -283,6 +285,10 @@ public:
     return DwarfAddrSection;
   }
 
+  const MCSection *getCOFFDebugSymbolsSection() const {
+    return COFFDebugSymbolsSection;
+  }
+
   const MCSection *getTLSExtraDataSection() const {
     return TLSExtraDataSection;
   }

llvm/lib/MC/MCObjectFileInfo.cpp

@@ -609,6 +609,13 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
                         SectionKind::getReadOnly());
 
   // Debug info.
+  COFFDebugSymbolsSection =
+    Ctx->getCOFFSection(".debug$S",
+                        COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getMetadata());
+
   DwarfAbbrevSection =
     Ctx->getCOFFSection(".debug_abbrev",
                         COFF::IMAGE_SCN_MEM_DISCARDABLE |