Write out global initializers and data rel directly to ELF file.

src/IceELFSection.cpp

Index: src/IceELFSection.cpp
diff --git a/src/IceELFSection.cpp b/src/IceELFSection.cpp
index 5dcc206df8d61849ba2cd529ceed6967fa366a23..00289e6e3c755120ad80af725a4562f733bcbf21 100644
--- a/src/IceELFSection.cpp
+++ b/src/IceELFSection.cpp
@@ -11,6 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Support/MathExtras.h"
+
 #include "IceDefs.h"
 #include "IceELFSection.h"
 #include "IceELFStreamer.h"
@@ -19,6 +21,19 @@ using namespace llvm::ELF;
 
 namespace Ice {
 
+void ELFSection::padToAlignment(ELFStreamer &Str, bool WritePadding,
+                                Elf64_Xword Align) {
+  assert(llvm::isPowerOf2_32(Align));
+  Elf64_Xword Mod = Header.sh_size & (Align - 1);
+  if (Mod == 0)
+    return;
+  Elf64_Xword AlignDiff = Align - Mod;
+  if (WritePadding)
+    Str.writeZeroPadding(AlignDiff);
+  Header.sh_size += AlignDiff;
+  assert((Header.sh_size & (Align - 1)) == 0);
+}
+
 // Text sections.
 
 void ELFTextSection::appendData(ELFStreamer &Str,
@@ -35,6 +50,21 @@ void ELFDataSection::appendData(ELFStreamer &Str,
   Header.sh_size += MoreData.size();
 }
 
+void ELFDataSection::appendZeros(ELFStreamer &Str, SizeT NumBytes) {
+  Str.writeZeroPadding(NumBytes);
+  Header.sh_size += NumBytes;
+}
+
+void ELFDataSection::appendRelocationOffset(ELFStreamer &Str, bool IsRela,
+                                            RelocOffsetT RelocOffset) {
+  if (IsRela) {
+    appendZeros(Str, RelocAddrSize);
+    return;
+  }
+  Str.writeLE32(RelocOffset);
+  Header.sh_size += RelocAddrSize;
+}
+
 // Relocation sections.
 
 void ELFRelocationSection::addRelocations(RelocOffsetT BaseOff,
@@ -73,7 +103,7 @@ void ELFSymbolTableSection::createDefinedSym(const IceString &Name,
   NewSymbol.Section = Section;
   NewSymbol.Number = ELFSym::UnknownNumber;
   bool Unique;
-  if (Type == STB_LOCAL)
+  if (Binding == STB_LOCAL)

[jvoung (off chromium), 2015/01/27 01:46:28]

oops

[Jim Stichnoth, 2015/01/27 16:44:55]

Hmm.  Too bad LLVM didn't name the enums that define these values...

[jvoung (off chromium), 2015/01/28 17:46:21]

Yeah, and unfortunately LLVM doesn't have a second copy of these where the enum
is named =)

     Unique = LocalSymbols.insert(std::make_pair(Name, NewSymbol)).second;
   else
     Unique = GlobalSymbols.insert(std::make_pair(Name, NewSymbol)).second;