LLVM API Documentation

X86ELFWriter.cpp

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00001 //===-- X86ELFWriter.cpp - Emit an ELF file for the X86 backend -----------===//
00002 //
00003 //                     The LLVM Compiler Infrastructure
00004 //
00005 // This file was developed by the LLVM research group and is distributed under
00006 // the University of Illinois Open Source License. See LICENSE.TXT for details.
00007 //
00008 //===----------------------------------------------------------------------===//
00009 //
00010 // This file implements an ELF writer for the X86 backend.  The public interface
00011 // to this file is the createX86ELFObjectWriterPass function.
00012 //
00013 //===----------------------------------------------------------------------===//
00014 
00015 #include "X86.h"
00016 #include "X86TargetMachine.h"
00017 #include "llvm/PassManager.h"
00018 #include "llvm/CodeGen/ELFWriter.h"
00019 using namespace llvm;
00020 
00021 namespace {
00022   class X86ELFWriter : public ELFWriter {
00023   public:
00024     X86ELFWriter(std::ostream &O, X86TargetMachine &TM) : ELFWriter(O, TM) {
00025       e_machine = 3;   // EM_386
00026     }
00027   };
00028 }
00029 
00030 /// addX86ELFObjectWriterPass - Returns a pass that outputs the generated code
00031 /// as an ELF object file.
00032 ///
00033 void llvm::addX86ELFObjectWriterPass(PassManager &FPM,
00034                                      std::ostream &O, X86TargetMachine &TM) {
00035   X86ELFWriter *EW = new X86ELFWriter(O, TM);
00036   FPM.add(EW);
00037   FPM.add(createX86CodeEmitterPass(EW->getMachineCodeEmitter()));
00038 }