interception_mac.h revision 245614
1//===-- interception_mac.h --------------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of AddressSanitizer, an address sanity checker. 11// 12// Mac-specific interception methods. 13//===----------------------------------------------------------------------===// 14 15#ifdef __APPLE__ 16 17#if !defined(INCLUDED_FROM_INTERCEPTION_LIB) 18# error "interception_mac.h should be included from interception.h only" 19#endif 20 21#ifndef INTERCEPTION_MAC_H 22#define INTERCEPTION_MAC_H 23 24#include <mach/mach_error.h> 25#include <stddef.h> 26 27// Allocate memory for the escape island. This cannot be moved to 28// mach_override, because each user of interceptors may specify its 29// own memory range for escape islands. 30extern "C" { 31mach_error_t __interception_allocate_island(void **ptr, size_t unused_size, 32 void *unused_hint); 33mach_error_t __interception_deallocate_island(void *ptr); 34} // extern "C" 35 36namespace __interception { 37// returns true if the old function existed. 38bool OverrideFunction(uptr old_func, uptr new_func, uptr *orig_old_func); 39} // namespace __interception 40 41# define OVERRIDE_FUNCTION_MAC(old_func, new_func) \ 42 ::__interception::OverrideFunction( \ 43 (::__interception::uptr)old_func, \ 44 (::__interception::uptr)new_func, \ 45 (::__interception::uptr*)((::__interception::uptr)&REAL(old_func))) 46# define INTERCEPT_FUNCTION_MAC(func) OVERRIDE_FUNCTION_MAC(func, WRAP(func)) 47 48#endif // INTERCEPTION_MAC_H 49#endif // __APPLE__ 50