llvm-project/compiler-rt/lib/interception/interception_win.h

//===-- interception_linux.h ------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of AddressSanitizer, an address sanity checker.
//
// Windows-specific interception methods.
//===----------------------------------------------------------------------===//

#ifdef _WIN32

#if !defined(INCLUDED_FROM_INTERCEPTION_LIB)
# error "interception_win.h should be included from interception library only"
#endif

#ifndef INTERCEPTION_WIN_H
#define INTERCEPTION_WIN_H

namespace __interception {
// returns true if a function with the given name was found.
bool GetRealFunctionAddress(const char *func_name, uptr *func_addr);

// returns true if the old function existed, false on failure.
bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func);
}  // namespace __interception

#if defined(_DLL)
# define INTERCEPT_FUNCTION_WIN(func) \
    ::__interception::GetRealFunctionAddress( \
        #func, (::__interception::uptr*)&REAL(func))
#else
# define INTERCEPT_FUNCTION_WIN(func) \
    ::__interception::OverrideFunction( \
        (::__interception::uptr)func, \
        (::__interception::uptr)WRAP(func), \
        (::__interception::uptr*)&REAL(func))
#endif

#endif  // INTERCEPTION_WIN_H
#endif  // _WIN32