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.
malloc(size_t size)41 extern "C" void* malloc(size_t size) {
42 write(2, PAYLOAD("ERROR: malloc called!"));
43 exit(1);
44 }
45
free(void *)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.
get_globals()53 extern "C" void* get_globals() {
54 return (void*) __cxxabiv1::__cxa_get_globals();
55 }
56