Check in LLVM r95781.
diff --git a/lib/Target/X86/X86ELFWriterInfo.cpp b/lib/Target/X86/X86ELFWriterInfo.cpp
new file mode 100644
index 0000000..1597d2b
--- /dev/null
+++ b/lib/Target/X86/X86ELFWriterInfo.cpp
@@ -0,0 +1,153 @@
+//===-- X86ELFWriterInfo.cpp - ELF Writer Info for the X86 backend --------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements ELF writer information for the X86 backend.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86ELFWriterInfo.h"
+#include "X86Relocations.h"
+#include "llvm/Function.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
+
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// Implementation of the X86ELFWriterInfo class
+//===----------------------------------------------------------------------===//
+
+X86ELFWriterInfo::X86ELFWriterInfo(TargetMachine &TM)
+ : TargetELFWriterInfo(TM) {
+ bool is64Bit = TM.getTargetData()->getPointerSizeInBits() == 64;
+ EMachine = is64Bit ? EM_X86_64 : EM_386;
+ }
+
+X86ELFWriterInfo::~X86ELFWriterInfo() {}
+
+unsigned X86ELFWriterInfo::getRelocationType(unsigned MachineRelTy) const {
+ if (is64Bit) {
+ switch(MachineRelTy) {
+ case X86::reloc_pcrel_word:
+ return R_X86_64_PC32;
+ case X86::reloc_absolute_word:
+ return R_X86_64_32;
+ case X86::reloc_absolute_word_sext:
+ return R_X86_64_32S;
+ case X86::reloc_absolute_dword:
+ return R_X86_64_64;
+ case X86::reloc_picrel_word:
+ default:
+ llvm_unreachable("unknown x86_64 machine relocation type");
+ }
+ } else {
+ switch(MachineRelTy) {
+ case X86::reloc_pcrel_word:
+ return R_386_PC32;
+ case X86::reloc_absolute_word:
+ return R_386_32;
+ case X86::reloc_absolute_word_sext:
+ case X86::reloc_absolute_dword:
+ case X86::reloc_picrel_word:
+ default:
+ llvm_unreachable("unknown x86 machine relocation type");
+ }
+ }
+ return 0;
+}
+
+long int X86ELFWriterInfo::getDefaultAddendForRelTy(unsigned RelTy,
+ long int Modifier) const {
+ if (is64Bit) {
+ switch(RelTy) {
+ case R_X86_64_PC32: return Modifier - 4;
+ case R_X86_64_32:
+ case R_X86_64_32S:
+ case R_X86_64_64:
+ return Modifier;
+ default:
+ llvm_unreachable("unknown x86_64 relocation type");
+ }
+ } else {
+ switch(RelTy) {
+ case R_386_PC32: return Modifier - 4;
+ case R_386_32: return Modifier;
+ default:
+ llvm_unreachable("unknown x86 relocation type");
+ }
+ }
+ return 0;
+}
+
+unsigned X86ELFWriterInfo::getRelocationTySize(unsigned RelTy) const {
+ if (is64Bit) {
+ switch(RelTy) {
+ case R_X86_64_PC32:
+ case R_X86_64_32:
+ case R_X86_64_32S:
+ return 32;
+ case R_X86_64_64:
+ return 64;
+ default:
+ llvm_unreachable("unknown x86_64 relocation type");
+ }
+ } else {
+ switch(RelTy) {
+ case R_386_PC32:
+ case R_386_32:
+ return 32;
+ default:
+ llvm_unreachable("unknown x86 relocation type");
+ }
+ }
+ return 0;
+}
+
+bool X86ELFWriterInfo::isPCRelativeRel(unsigned RelTy) const {
+ if (is64Bit) {
+ switch(RelTy) {
+ case R_X86_64_PC32:
+ return true;
+ case R_X86_64_32:
+ case R_X86_64_32S:
+ case R_X86_64_64:
+ return false;
+ default:
+ llvm_unreachable("unknown x86_64 relocation type");
+ }
+ } else {
+ switch(RelTy) {
+ case R_386_PC32:
+ return true;
+ case R_386_32:
+ return false;
+ default:
+ llvm_unreachable("unknown x86 relocation type");
+ }
+ }
+ return 0;
+}
+
+unsigned X86ELFWriterInfo::getAbsoluteLabelMachineRelTy() const {
+ return is64Bit ?
+ X86::reloc_absolute_dword : X86::reloc_absolute_word;
+}
+
+long int X86ELFWriterInfo::computeRelocation(unsigned SymOffset,
+ unsigned RelOffset,
+ unsigned RelTy) const {
+
+ if (RelTy == R_X86_64_PC32 || RelTy == R_386_PC32)
+ return SymOffset - (RelOffset + 4);
+ else
+ assert("computeRelocation unknown for this relocation type");
+
+ return 0;
+}