1/*
2  This file is part of drd, a thread error detector.
3
4  Copyright (C) 2006-2013 Bart Van Assche <bvanassche@acm.org>.
5
6  This program is free software; you can redistribute it and/or
7  modify it under the terms of the GNU General Public License as
8  published by the Free Software Foundation; either version 2 of the
9  License, or (at your option) any later version.
10
11  This program is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  General Public License for more details.
15
16  You should have received a copy of the GNU General Public License
17  along with this program; if not, write to the Free Software
18  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19  02111-1307, USA.
20
21  The GNU General Public License is contained in the file COPYING.
22*/
23
24#include <stdint.h>
25#include <stdio.h>
26#include "pub_tool_clreq.h"
27#include "drd.h"
28#include "pub_tool_redir.h"
29
30/*
31 * On Mac OS X shared library functions are lazily bound. The binding mechanism
32 * uses self-modifying code. Intercept fastBindLazySymbol() in order to suppress
33 * the data accesses involved in this mechanism.
34 *
35 * See also the Mac OS X ABI Dynamic Loader Reference (http://developer.apple.com/library/mac/#documentation/DeveloperTools/Reference/MachOReference/Reference/reference.html#//apple_ref/c/func/dyld_stub_binding_helper).
36 * See also the dyld_stub_binder() source code (http://www.opensource.apple.com/source/dyld/dyld-132.13/src/dyld_stub_binder.s).
37 * See also the dyld::fastBindLazySymbol() source code (http://opensource.apple.com/source/dyld/dyld-132.13/src/dyld.cpp).
38 */
39void* VG_WRAP_FUNCTION_ZZ(dyld, ZuZZN4dyld18fastBindLazySymbolEPP11ImageLoaderm)
40     (void** imageLoaderCache, uintptr_t lazyBindingInfoOffset);
41void* VG_WRAP_FUNCTION_ZZ(dyld, ZuZZN4dyld18fastBindLazySymbolEPP11ImageLoaderm)
42     (void** imageLoaderCache, uintptr_t lazyBindingInfoOffset)
43{
44   void* res;
45   OrigFn fn;
46
47   VALGRIND_GET_ORIG_FN(fn);
48
49   ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN();
50   CALL_FN_W_WW(res, fn, imageLoaderCache, lazyBindingInfoOffset);
51   ANNOTATE_IGNORE_READS_AND_WRITES_END();
52
53   return res;
54}
55