1/*
2 * Copyright (C) 2009 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 <asm/unistd.h>
29
30.text
31.type   _exit_with_stack_teardown, @function
32.globl  _exit_with_stack_teardown
33.align  4
34
35# void _exit_with_stack_teardown(void * stackBase, int stackSize, int retCode)
36
37_exit_with_stack_teardown:
38    mov     r6, r8      /* save retCode : breaks r8 value */
39    mov.l   0f, r3      /* system call number */
40    trapa   #(2 + 0x10) /* invoke system call with num of args */
41
42    mov     r8, r4      /* restore retCode */
43    mov.l   1f, r3      /* system call number */
44    trapa   #(1 + 0x10) /* invoke system call with num of args */
45
46    /* exit() should never return, cause a crash if it does */
47    mov     #0, r0
48    mov.l   @r0, r0
49
50    .align  2
510:  .long   __NR_munmap
521:  .long   __NR_exit
53