0ad363eebc
State numbers are calculated by performing a walk from the innermost funclet to the outermost funclet. Rudimentary support for the new EH constructs has been added to the assembly printer, just enough to test the new machinery. Differential Revision: http://reviews.llvm.org/D12098 llvm-svn: 245331
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
//===-- WinException.h - Windows Exception Handling ----------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing windows exception info into asm files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_WIN64EXCEPTION_H
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#include "EHStreamer.h"
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namespace llvm {
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class Function;
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class MachineFunction;
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class MCExpr;
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class Value;
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struct WinEHFuncInfo;
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class LLVM_LIBRARY_VISIBILITY WinException : public EHStreamer {
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/// Per-function flag to indicate if personality info should be emitted.
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bool shouldEmitPersonality = false;
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/// Per-function flag to indicate if the LSDA should be emitted.
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bool shouldEmitLSDA = false;
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/// Per-function flag to indicate if frame moves info should be emitted.
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bool shouldEmitMoves = false;
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/// True if this is a 64-bit target and we should use image relative offsets.
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bool useImageRel32 = false;
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void emitCSpecificHandlerTable();
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/// Emit the EH table data for 32-bit and 64-bit functions using
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/// the __CxxFrameHandler3 personality.
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void emitCXXFrameHandler3Table(const MachineFunction *MF);
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/// Emit the EH table data for _except_handler3 and _except_handler4
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/// personality functions. These are only used on 32-bit and do not use CFI
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/// tables.
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void emitExceptHandlerTable(const MachineFunction *MF);
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void extendIP2StateTable(const MachineFunction *MF, const Function *ParentF,
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WinEHFuncInfo &FuncInfo);
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/// Emits the label used with llvm.x86.seh.recoverfp, which is used by
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/// outlined funclets.
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void emitEHRegistrationOffsetLabel(const WinEHFuncInfo &FuncInfo,
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StringRef FLinkageName);
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const MCExpr *create32bitRef(const MCSymbol *Value);
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const MCExpr *create32bitRef(const Value *V);
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public:
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//===--------------------------------------------------------------------===//
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// Main entry points.
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//
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WinException(AsmPrinter *A);
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~WinException() 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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}
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#endif
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