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 #include "llvm/Support/Visibility.h"
00020 using namespace llvm;
00021 
00022 namespace {
00023   class VISIBILITY_HIDDEN X86ELFWriter : public ELFWriter {
00024   public:
00025     X86ELFWriter(std::ostream &O, X86TargetMachine &TM) : ELFWriter(O, TM) {
00026       e_machine = 3;   // EM_386
00027     }
00028   };
00029 }
00030 
00031 /// addX86ELFObjectWriterPass - Returns a pass that outputs the generated code
00032 /// as an ELF object file.
00033 ///
00034 void llvm::addX86ELFObjectWriterPass(PassManager &FPM,
00035                                      std::ostream &O, X86TargetMachine &TM) {
00036   X86ELFWriter *EW = new X86ELFWriter(O, TM);
00037   FPM.add(EW);
00038   FPM.add(createX86CodeEmitterPass(TM, EW->getMachineCodeEmitter()));
00039 }