blob: d5fb6e1e259a84d229d962cf24d1c14e41f4d534 [file] [log] [blame]
/*--------------------------------------------------------------------*/
/*--- Replacements for strlen() and strnlen(), which run on the ---*/
/*--- simulated CPU. ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of DRD, a heavyweight Valgrind tool for
detecting threading errors. The code below has been extracted
from memchec/mc_replace_strmem.c, which has the following copyright
notice:
Copyright (C) 2000-2012 Julian Seward
jseward@acm.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "pub_tool_basics.h"
#include "pub_tool_hashtable.h"
#include "pub_tool_redir.h"
#include "pub_tool_tooliface.h"
#include "valgrind.h"
#define STRNLEN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ); \
SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ) \
{ \
SizeT i = 0; \
while (i < n && str[i] != 0) i++; \
return i; \
}
#if defined(VGO_linux)
STRNLEN(VG_Z_LIBC_SONAME, strnlen)
#elif defined(VGO_darwin)
STRNLEN(VG_Z_LIBC_SONAME, strnlen)
#endif
// Note that this replacement often doesn't get used because gcc inlines
// calls to strlen() with its own built-in version. This can be very
// confusing if you aren't expecting it. Other small functions in this file
// may also be inline by gcc.
#define STRLEN(soname, fnname) \
SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ); \
SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ) \
{ \
SizeT i = 0; \
while (str[i] != 0) i++; \
return i; \
}
#if defined(VGO_linux)
STRLEN(VG_Z_LIBC_SONAME, strlen)
STRLEN(VG_Z_LD_LINUX_SO_2, strlen)
STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen)
#elif defined(VGO_darwin)
STRLEN(VG_Z_LIBC_SONAME, strlen)
#endif
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/