llvm-6502/lib/CodeGen/MachOWriter.h
Nate Begeman 3fe980b127 Hook up llc's -filetype=obj to use MCStreamer if an MCCodeEmitter is available.
Remove most of old Mach-O Writer support, it has been replaced by MCMachOStreamer

Further refactoring to completely remove MachOWriter and drive the object file
writer with the AsmPrinter MCInst/MCSection logic is forthcoming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-15 18:51:18 +00:00

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//=== MachOWriter.h - Target-independent Mach-O writer support --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MachOWriter class.
//
//===----------------------------------------------------------------------===//
#ifndef MACHOWRITER_H
#define MACHOWRITER_H
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
class GlobalVariable;
class Mangler;
class MCCodeEmitter;
class MCContext;
class MCStreamer;
/// MachOWriter - This class implements the common target-independent code for
/// writing Mach-O files. Targets should derive a class from this to
/// parameterize the output format.
///
class MachOWriter : public MachineFunctionPass {
static char ID;
protected:
/// Output stream to send the resultant object file to.
///
formatted_raw_ostream &O;
/// Target machine description.
///
TargetMachine &TM;
/// Target Asm Printer information.
///
const MCAsmInfo *MAI;
/// MCCE - The MCCodeEmitter object that we are exposing to emit machine
/// code for functions to the .o file.
MCCodeEmitter *MCCE;
/// OutContext - This is the context for the output file that we are
/// streaming. This owns all of the global MC-related objects for the
/// generated translation unit.
MCContext &OutContext;
/// OutStreamer - This is the MCStreamer object for the file we are
/// generating. This contains the transient state for the current
/// translation unit that we are generating (such as the current section
/// etc).
MCStreamer &OutStreamer;
/// Name-mangler for global names.
///
Mangler *Mang;
/// doInitialization - Emit the file header and all of the global variables
/// for the module to the Mach-O file.
bool doInitialization(Module &M);
/// doFinalization - Now that the module has been completely processed, emit
/// the Mach-O file to 'O'.
bool doFinalization(Module &M);
bool runOnMachineFunction(MachineFunction &MF);
public:
explicit MachOWriter(formatted_raw_ostream &O, TargetMachine &TM,
const MCAsmInfo *T, MCCodeEmitter *MCE);
virtual ~MachOWriter();
virtual const char *getPassName() const {
return "Mach-O Writer";
}
};
}
#endif