1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#include <sys/types.h>
29#include <sys/ptrace.h>
30
31extern long __ptrace(int request, pid_t pid, void *addr, void *data);
32
33long ptrace(int request, pid_t pid, void * addr, void * data)
34{
35    switch (request) {
36        case PTRACE_PEEKUSR:
37        case PTRACE_PEEKTEXT:
38        case PTRACE_PEEKDATA:
39        {
40            long word;
41            long ret;
42
43            ret = __ptrace(request, pid, addr, &word);
44            if (ret == 0) {
45                return word;
46            } else {
47                // __ptrace will set errno for us
48                return -1;
49            }
50        }
51
52        default:
53             return __ptrace(request, pid, addr, data);
54    }
55}
56
57/*
58 * Hook for gdb to get notified when a thread is created
59 */
60#ifdef __i386__
61#define ATTRIBUTES __attribute__((noinline)) __attribute__((fastcall))
62#else
63#define ATTRIBUTES __attribute__((noinline))
64#endif
65
66void ATTRIBUTES _thread_created_hook(pid_t thread_id)
67{
68}
69