xref: /external/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 {
// All the functions in the OverrideFunction() family return true on success,
// false on failure (including "couldn't find the function").

// Overrides a function by its address.
bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func = 0);

// Overrides a function in a system DLL or DLL CRT by its exported name.
bool OverrideFunction(const char *name, uptr new_func, uptr *orig_old_func = 0);
}  // namespace __interception

#if defined(INTERCEPTION_DYNAMIC_CRT)
#define INTERCEPT_FUNCTION_WIN(func)                                           \
  ::__interception::OverrideFunction(#func,                                    \
                                     (::__interception::uptr)WRAP(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

#define INTERCEPT_FUNCTION_VER_WIN(func, symver) INTERCEPT_FUNCTION_WIN(func)

#endif  // INTERCEPTION_WIN_H
#endif  // _WIN32