llvm-mirror/lib/CodeGen/AsmPrinter/DwarfException.h
Joerg Sonnenberger 5f19da4f7e Emit .cfi_sections before the first .cfi_startproc
GNU as rejects input where .cfi_sections is used after .cfi_startproc,
if the new section differs from the old. Adjust our output to always
emit .cfi_sections before the first .cfi_startproc to minimize necessary
code.

Differential Revision: https://reviews.llvm.org/D28011

llvm-svn: 290817
2017-01-02 18:05:27 +00:00

96 lines
3.1 KiB
C++

//===-- DwarfException.h - Dwarf Exception Framework -----------*- 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 support for writing dwarf exception info into asm files.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
#include "EHStreamer.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/MC/MCDwarf.h"
namespace llvm {
class MachineFunction;
class ARMTargetStreamer;
class LLVM_LIBRARY_VISIBILITY DwarfCFIExceptionBase : public EHStreamer {
protected:
DwarfCFIExceptionBase(AsmPrinter *A);
/// Per-function flag to indicate if frame CFI info should be emitted.
bool shouldEmitCFI;
/// Per-module flag to indicate if .cfi_section has beeen emitted.
bool hasEmittedCFISections;
void markFunctionEnd() override;
void endFragment() override;
};
class LLVM_LIBRARY_VISIBILITY DwarfCFIException : public DwarfCFIExceptionBase {
/// Per-function flag to indicate if .cfi_personality should be emitted.
bool shouldEmitPersonality;
/// Per-function flag to indicate if .cfi_personality must be emitted.
bool forceEmitPersonality;
/// Per-function flag to indicate if .cfi_lsda should be emitted.
bool shouldEmitLSDA;
/// Per-function flag to indicate if frame moves info should be emitted.
bool shouldEmitMoves;
public:
//===--------------------------------------------------------------------===//
// Main entry points.
//
DwarfCFIException(AsmPrinter *A);
~DwarfCFIException() override;
/// Emit all exception information that should come after the content.
void endModule() override;
/// Gather pre-function exception information. Assumes being emitted
/// immediately after the function entry point.
void beginFunction(const MachineFunction *MF) override;
/// Gather and emit post-function exception information.
void endFunction(const MachineFunction *) override;
void beginFragment(const MachineBasicBlock *MBB,
ExceptionSymbolProvider ESP) override;
};
class LLVM_LIBRARY_VISIBILITY ARMException : public DwarfCFIExceptionBase {
void emitTypeInfos(unsigned TTypeEncoding) override;
ARMTargetStreamer &getTargetStreamer();
public:
//===--------------------------------------------------------------------===//
// Main entry points.
//
ARMException(AsmPrinter *A);
~ARMException() override;
/// Emit all exception information that should come after the content.
void endModule() override {}
/// Gather pre-function exception information. Assumes being emitted
/// immediately after the function entry point.
void beginFunction(const MachineFunction *MF) override;
/// Gather and emit post-function exception information.
void endFunction(const MachineFunction *) override;
};
} // End of namespace llvm
#endif