111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
//===-- DwarfException.h - Dwarf Exception Framework -----------*- C++ -*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing dwarf exception info into asm files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFEXCEPTION_H
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#include "EHStreamer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/MC/MCDwarf.h"
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namespace llvm {
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class MachineFunction;
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class ARMTargetStreamer;
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class LLVM_LIBRARY_VISIBILITY DwarfCFIExceptionBase : public EHStreamer {
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protected:
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DwarfCFIExceptionBase(AsmPrinter *A);
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/// Per-function flag to indicate if frame CFI info should be emitted.
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bool shouldEmitCFI = false;
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/// Per-module flag to indicate if .cfi_section has beeen emitted.
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bool hasEmittedCFISections = false;
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void markFunctionEnd() override;
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void endFragment() override;
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};
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class LLVM_LIBRARY_VISIBILITY DwarfCFIException : public DwarfCFIExceptionBase {
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/// Per-function flag to indicate if .cfi_personality should be emitted.
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bool shouldEmitPersonality = false;
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/// Per-function flag to indicate if .cfi_personality must be emitted.
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bool forceEmitPersonality = false;
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/// Per-function flag to indicate if .cfi_lsda should be emitted.
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bool shouldEmitLSDA = false;
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public:
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//===--------------------------------------------------------------------===//
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// Main entry points.
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//
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DwarfCFIException(AsmPrinter *A);
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~DwarfCFIException() override;
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/// Emit all exception information that should come after the content.
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void endModule() override;
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/// Gather pre-function exception information. Assumes being emitted
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/// immediately after the function entry point.
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void beginFunction(const MachineFunction *MF) override;
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/// Gather and emit post-function exception information.
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void endFunction(const MachineFunction *) override;
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void beginFragment(const MachineBasicBlock *MBB,
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ExceptionSymbolProvider ESP) override;
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void beginBasicBlock(const MachineBasicBlock &MBB) override;
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void endBasicBlock(const MachineBasicBlock &MBB) override;
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};
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class LLVM_LIBRARY_VISIBILITY ARMException : public DwarfCFIExceptionBase {
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void emitTypeInfos(unsigned TTypeEncoding, MCSymbol *TTBaseLabel) override;
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ARMTargetStreamer &getTargetStreamer();
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public:
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//===--------------------------------------------------------------------===//
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// Main entry points.
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//
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ARMException(AsmPrinter *A);
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~ARMException() override;
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/// Emit all exception information that should come after the content.
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void endModule() override {}
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/// Gather pre-function exception information. Assumes being emitted
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/// immediately after the function entry point.
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void beginFunction(const MachineFunction *MF) override;
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/// Gather and emit post-function exception information.
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void endFunction(const MachineFunction *) override;
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};
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class LLVM_LIBRARY_VISIBILITY AIXException : public DwarfCFIExceptionBase {
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/// This is AIX's compat unwind section, which unwinder would use
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/// to find the location of LSDA area and personality rountine.
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void emitExceptionInfoTable(const MCSymbol *LSDA, const MCSymbol *PerSym);
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public:
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AIXException(AsmPrinter *A);
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void markFunctionEnd() override;
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void endModule() override {}
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void beginFunction(const MachineFunction *MF) override {}
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void endFunction(const MachineFunction *MF) override;
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};
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} // End of namespace llvm
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#endif
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