1 /* -*- mode: C; c-basic-offset: 3; -*- */ 2 3 /*--------------------------------------------------------------------*/ 4 /*--- Replacements for strlen() and strnlen(), which run on the ---*/ 5 /*--- simulated CPU. ---*/ 6 /*--------------------------------------------------------------------*/ 7 8 /* 9 This file is part of DRD, a heavyweight Valgrind tool for 10 detecting threading errors. The code below has been extracted 11 from memchec/mc_replace_strmem.c, which has the following copyright 12 notice: 13 14 Copyright (C) 2000-2010 Julian Seward 15 jseward (at) acm.org 16 17 This program is free software; you can redistribute it and/or 18 modify it under the terms of the GNU General Public License as 19 published by the Free Software Foundation; either version 2 of the 20 License, or (at your option) any later version. 21 22 This program is distributed in the hope that it will be useful, but 23 WITHOUT ANY WARRANTY; without even the implied warranty of 24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 25 General Public License for more details. 26 27 You should have received a copy of the GNU General Public License 28 along with this program; if not, write to the Free Software 29 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 30 02111-1307, USA. 31 32 The GNU General Public License is contained in the file COPYING. 33 */ 34 35 #include "pub_tool_basics.h" 36 #include "pub_tool_hashtable.h" 37 #include "pub_tool_redir.h" 38 #include "pub_tool_tooliface.h" 39 #include "valgrind.h" 40 41 42 #define STRNLEN(soname, fnname) \ 43 SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ); \ 44 SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname) ( const char* str, SizeT n ) \ 45 { \ 46 SizeT i = 0; \ 47 while (i < n && str[i] != 0) i++; \ 48 return i; \ 49 } 50 51 STRNLEN(VG_Z_LIBC_SONAME, strnlen) 52 53 54 // Note that this replacement often doesn't get used because gcc inlines 55 // calls to strlen() with its own built-in version. This can be very 56 // confusing if you aren't expecting it. Other small functions in this file 57 // may also be inline by gcc. 58 #define STRLEN(soname, fnname) \ 59 SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ); \ 60 SizeT VG_REPLACE_FUNCTION_ZU(soname,fnname)( const char* str ) \ 61 { \ 62 SizeT i = 0; \ 63 while (str[i] != 0) i++; \ 64 return i; \ 65 } 66 67 STRLEN(VG_Z_LIBC_SONAME, strlen) 68 #if defined(VGO_linux) 69 STRLEN(VG_Z_LD_LINUX_SO_2, strlen) 70 STRLEN(VG_Z_LD_LINUX_X86_64_SO_2, strlen) 71 #endif 72 73 /*--------------------------------------------------------------------*/ 74 /*--- end ---*/ 75 /*--------------------------------------------------------------------*/ 76
