1 // Copyright (C) 2011 The Android Open Source Project 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 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 3. Neither the name of the project nor the names of its contributors 13 // may be used to endorse or promote products derived from this software 14 // without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 // ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 // OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 // SUCH DAMAGE. 27 28 #include <stdlib.h> 29 #include <unistd.h> 30 31 #include <cxxabi.h> 32 33 #define PAYLOAD(s) s, sizeof(s) - 1 34 35 // Override malloc() and free() to ensure they are never called! 36 // 37 // Because GAbi++ is statically linked into this shared library with -Bsymbolic, 38 // any malloc() and free() calls it contains will be compiled as direct calls to 39 // this function, bypassing the dynamic linker's PLT indirections and avoiding 40 // the symbols from the C library. 41 extern "C" void* malloc(size_t size) { 42 write(2, PAYLOAD("ERROR: malloc called!")); 43 exit(1); 44 } 45 46 extern "C" void free(void*) { 47 write(2, PAYLOAD("ERROR: free called!")); 48 exit(2); 49 } 50 51 // Called by the test program to force creation of a thread-specific 52 // C++ runtime object. 53 extern "C" void* get_globals() { 54 return (void*) __cxxabiv1::__cxa_get_globals(); 55 } 56
