1 /* Copyright (c) 2008-2010, Google Inc. 2 * All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Neither the name of Google Inc. nor the names of its 11 * contributors may be used to endorse or promote products derived from 12 * this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 // This file is part of ThreadSanitizer, a dynamic data race detector. 28 // Author: Konstantin Serebryany. 29 // Implement some of the libc functions to link with valgrind. 30 // Do not include any linux header here to avoid conflicts. 31 // 32 extern "C" { 33 #include "pub_tool_basics.h" 34 #include "pub_tool_libcbase.h" 35 } 36 37 // can't use VG_(memmove) since it is buggy. 38 extern "C" void * memmove(void *a, const void *b, unsigned long size) { 39 char *A = (char*)a; 40 const char *B = (const char*)b; 41 if (A < B) { 42 for (unsigned long i = 0; i < size; i++) { 43 A[i] = B[i]; 44 } 45 } else if(A > B) { 46 for (unsigned long i = 0; i < size; i++) { 47 A[size - i - 1] = B[size - i - 1]; 48 } 49 } 50 return a; 51 } 52 53 extern "C" int memcmp(const void *a, const void *b, unsigned long c) { 54 return VG_(memcmp)(a,b,c); 55 } 56 #ifndef VGO_darwin 57 extern "C" void* __memcpy_chk(void *dest, const void *src, unsigned long n) { 58 return VG_(memcpy)(dest,src,n); 59 } 60 #endif 61
