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//===-- llvm/MC/WinCOFFStreamer.cpp -----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains an implementation of a Win32 COFF object file streamer.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "WinCOFFStreamer"
#include "llvm/MC/MCObjectStreamer.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/Target/TargetAsmBackend.h"
#include "llvm/Support/COFF.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
#define dbg_notimpl(x) \
do { dbgs() << "not implemented, " << __FUNCTION__ << " (" << x << ")"; \
abort(); } while (false);
namespace {
class WinCOFFStreamer : public MCObjectStreamer {
public:
WinCOFFStreamer(MCContext &Context,
TargetAsmBackend &TAB,
MCCodeEmitter &CE,
raw_ostream &OS);
// MCStreamer interface
virtual void EmitLabel(MCSymbol *Symbol);
virtual void EmitAssemblerFlag(MCAssemblerFlag Flag);
virtual void EmitAssignment(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute);
virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
virtual void BeginCOFFSymbolDef(MCSymbol const *Symbol);
virtual void EmitCOFFSymbolStorageClass(int StorageClass);
virtual void EmitCOFFSymbolType(int Type);
virtual void EndCOFFSymbolDef();
virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value);
virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment);
virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size);
virtual void EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
unsigned Size,unsigned ByteAlignment);
virtual void EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment);
virtual void EmitBytes(StringRef Data, unsigned AddrSpace);
virtual void EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace);
virtual void EmitGPRel32Value(const MCExpr *Value);
virtual void EmitValueToAlignment(unsigned ByteAlignment, int64_t Value,
unsigned ValueSize, unsigned MaxBytesToEmit);
virtual void EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit);
virtual void EmitValueToOffset(const MCExpr *Offset, unsigned char Value);
virtual void EmitFileDirective(StringRef Filename);
virtual void EmitDwarfFileDirective(unsigned FileNo,StringRef Filename);
virtual void EmitInstruction(const MCInst &Instruction);
virtual void Finish();
};
} // end anonymous namespace.
WinCOFFStreamer::WinCOFFStreamer(MCContext &Context,
TargetAsmBackend &TAB,
MCCodeEmitter &CE,
raw_ostream &OS)
: MCObjectStreamer(Context, TAB, OS, &CE) {
}
// MCStreamer interface
void WinCOFFStreamer::EmitLabel(MCSymbol *Symbol) {
}
void WinCOFFStreamer::EmitAssemblerFlag(MCAssemblerFlag Flag) {
dbg_notimpl("Flag = " << Flag);
}
void WinCOFFStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
}
void WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
MCSymbolAttr Attribute) {
}
void WinCOFFStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
dbg_notimpl("Symbol = " << Symbol->getName() << ", DescValue = "<< DescValue);
}
void WinCOFFStreamer::BeginCOFFSymbolDef(MCSymbol const *Symbol) {
}
void WinCOFFStreamer::EmitCOFFSymbolStorageClass(int StorageClass) {
}
void WinCOFFStreamer::EmitCOFFSymbolType(int Type) {
}
void WinCOFFStreamer::EndCOFFSymbolDef() {
}
void WinCOFFStreamer::EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {
dbg_notimpl("Symbol = " << Symbol->getName() << ", Value = " << *Value);
}
void WinCOFFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
}
void WinCOFFStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {
}
void WinCOFFStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
unsigned Size,unsigned ByteAlignment) {
MCSectionCOFF const *SectionCOFF =
static_cast<MCSectionCOFF const *>(Section);
dbg_notimpl("Section = " << SectionCOFF->getSectionName() << ", Symbol = " <<
Symbol->getName() << ", Size = " << Size << ", ByteAlignment = "
<< ByteAlignment);
}
void WinCOFFStreamer::EmitTBSSSymbol(const MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
MCSectionCOFF const *SectionCOFF =
static_cast<MCSectionCOFF const *>(Section);
dbg_notimpl("Section = " << SectionCOFF->getSectionName() << ", Symbol = " <<
Symbol->getName() << ", Size = " << Size << ", ByteAlignment = "
<< ByteAlignment);
}
void WinCOFFStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) {
}
void WinCOFFStreamer::EmitValue(const MCExpr *Value, unsigned Size,
unsigned AddrSpace) {
}
void WinCOFFStreamer::EmitGPRel32Value(const MCExpr *Value) {
dbg_notimpl("Value = '" << *Value);
}
void WinCOFFStreamer::EmitValueToAlignment(unsigned ByteAlignment,
int64_t Value,
unsigned ValueSize,
unsigned MaxBytesToEmit) {
}
void WinCOFFStreamer::EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit = 0) {
}
void WinCOFFStreamer::EmitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0) {
dbg_notimpl("Offset = '" << *Offset << "', Value = " << Value);
}
void WinCOFFStreamer::EmitFileDirective(StringRef Filename) {
// Ignore for now, linkers don't care, and proper debug
// info will be a much large effort.
}
void WinCOFFStreamer::EmitDwarfFileDirective(unsigned FileNo,
StringRef Filename) {
dbg_notimpl("FileNo = " << FileNo << ", Filename = '" << Filename << "'");
}
void WinCOFFStreamer::EmitInstruction(const MCInst &Instruction) {
}
void WinCOFFStreamer::Finish() {
MCObjectStreamer::Finish();
}
namespace llvm
{
MCStreamer *createWinCOFFStreamer(MCContext &Context,
TargetAsmBackend &TAB,
MCCodeEmitter &CE,
raw_ostream &OS) {
return new WinCOFFStreamer(Context, TAB, CE, OS);
}
}
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