blob: 3eaccac1f03c560c7f350f21033c52bcc58042e9 [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) 2000-2008 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"
/* --------- Some handy Z-encoded names. --------- */
/* --- Soname of the standard C library. --- */
#if defined(VGO_linux)
# define m_libc_soname libcZdsoZa // libc.so*
#elif defined(VGP_ppc32_aix5)
/* AIX has both /usr/lib/libc.a and /usr/lib/libc_r.a. */
# define m_libc_soname libcZaZdaZLshrZdoZR // libc*.a(shr.o)
#elif defined(VGP_ppc64_aix5)
# define m_libc_soname libcZaZdaZLshrZu64ZdoZR // libc*.a(shr_64.o)
#else
# error "Unknown platform"
#endif
/* --- Sonames for Linux ELF linkers. --- */
#define m_ld_linux_so_2 ldZhlinuxZdsoZd2 // ld-linux.so.2
#define m_ld_linux_x86_64_so_2 ldZhlinuxZhx86Zh64ZdsoZd2 // ld-linux-x86-64.so.2
#define m_ld64_so_1 ld64ZdsoZd1 // ld64.so.1
#define m_ld_so_1 ldZdsoZd1 // ld.so.1
#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; \
}
STRNLEN(m_libc_soname, strnlen)
// 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; \
}
STRLEN(m_libc_soname, strlen)
STRLEN(m_ld_linux_so_2, strlen)
STRLEN(m_ld_linux_x86_64_so_2, strlen)
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/