58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
|
//===-- WinCFGuard.h - Windows Control Flow Guard Handling ----*- C++ -*--===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This file contains support for writing the metadata for Windows Control Flow
|
||
|
|
// Guard, including address-taken functions, and valid longjmp targets.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H
|
||
|
|
#define LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H
|
||
|
|
|
||
|
|
#include "llvm/CodeGen/AsmPrinterHandler.h"
|
||
|
|
#include "llvm/Support/Compiler.h"
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
namespace llvm {
|
||
|
|
|
||
|
|
class LLVM_LIBRARY_VISIBILITY WinCFGuard : public AsmPrinterHandler {
|
||
|
|
/// Target of directive emission.
|
||
|
|
AsmPrinter *Asm;
|
||
|
|
std::vector<const MCSymbol *> LongjmpTargets;
|
||
|
|
MCSymbol *lookupImpSymbol(const MCSymbol *Sym);
|
||
|
|
|
||
|
|
public:
|
||
|
|
WinCFGuard(AsmPrinter *A);
|
||
|
|
~WinCFGuard() override;
|
||
|
|
|
||
|
|
void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {}
|
||
|
|
|
||
|
|
/// Emit the Control Flow Guard function ID table.
|
||
|
|
void endModule() override;
|
||
|
|
|
||
|
|
/// Gather pre-function debug information.
|
||
|
|
/// Every beginFunction(MF) call should be followed by an endFunction(MF)
|
||
|
|
/// call.
|
||
|
|
void beginFunction(const MachineFunction *MF) override {}
|
||
|
|
|
||
|
|
/// Gather post-function debug information.
|
||
|
|
/// Please note that some AsmPrinter implementations may not call
|
||
|
|
/// beginFunction at all.
|
||
|
|
void endFunction(const MachineFunction *MF) override;
|
||
|
|
|
||
|
|
/// Process beginning of an instruction.
|
||
|
|
void beginInstruction(const MachineInstr *MI) override {}
|
||
|
|
|
||
|
|
/// Process end of an instruction.
|
||
|
|
void endInstruction() override {}
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace llvm
|
||
|
|
|
||
|
|
#endif
|