llvm-mirror/include/llvm/MC/MCWinCOFFStreamer.h
Francis Visoiu Mistrih bb4cf24f14 [MC] Error on a .zerofill directive in a non-virtual section
On darwin, all virtual sections have zerofill type, and having a
.zerofill directive in a non-virtual section is not allowed. Instead of
asserting, show a nicer error.

In order to use the equivalent of .zerofill in a non-virtual section,
the usage of .zero of .space is required.

This patch replaces the assert with an error.

Differential Revision: https://reviews.llvm.org/D48517

llvm-svn: 336127
2018-07-02 17:29:43 +00:00

83 lines
2.7 KiB
C++

//===- MCWinCOFFStreamer.h - COFF Object File Interface ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_MCWINCOFFSTREAMER_H
#define LLVM_MC_MCWINCOFFSTREAMER_H
#include "llvm/MC/MCDirectives.h"
#include "llvm/MC/MCObjectStreamer.h"
namespace llvm {
class MCAsmBackend;
class MCContext;
class MCCodeEmitter;
class MCInst;
class MCSection;
class MCSubtargetInfo;
class MCSymbol;
class StringRef;
class raw_pwrite_stream;
class MCWinCOFFStreamer : public MCObjectStreamer {
public:
MCWinCOFFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> MAB,
std::unique_ptr<MCCodeEmitter> CE,
std::unique_ptr<MCObjectWriter> OW);
/// state management
void reset() override {
CurSymbol = nullptr;
MCObjectStreamer::reset();
}
/// \name MCStreamer interface
/// \{
void InitSections(bool NoExecStack) override;
void EmitLabel(MCSymbol *Symbol, SMLoc Loc = SMLoc()) override;
void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
void EmitThumbFunc(MCSymbol *Func) override;
bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
void BeginCOFFSymbolDef(MCSymbol const *Symbol) override;
void EmitCOFFSymbolStorageClass(int StorageClass) override;
void EmitCOFFSymbolType(int Type) override;
void EndCOFFSymbolDef() override;
void EmitCOFFSafeSEH(MCSymbol const *Symbol) override;
void EmitCOFFSymbolIndex(MCSymbol const *Symbol) override;
void EmitCOFFSectionIndex(MCSymbol const *Symbol) override;
void EmitCOFFSecRel32(MCSymbol const *Symbol, uint64_t Offset) override;
void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) override;
void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) override;
void EmitZerofill(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment, SMLoc Loc = SMLoc()) override;
void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) override;
void EmitIdent(StringRef IdentString) override;
void EmitWinEHHandlerData(SMLoc Loc) override;
void FinishImpl() override;
/// \}
protected:
const MCSymbol *CurSymbol;
void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &STI) override;
private:
void Error(const Twine &Msg) const;
};
} // end namespace llvm
#endif // LLVM_MC_MCWINCOFFSTREAMER_H