| Ben Cheng | 017f438 | 2012-05-08 13:36:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | |
| 29 | #include <machine/asm.h> |
| 30 | |
| 31 | /* |
| 32 | * Coding the abort function in assembly so that registers are guaranteed to |
| 33 | * be preserved properly regardless of GCC's assumption on the "noreturn" |
| 34 | * attribute. When the registers are not properly preserved we won't be able |
| 35 | * to unwind the stack all the way to the bottom to fully reveal the call |
| 36 | * sequence when the crash happens. |
| 37 | */ |
| 38 | ENTRY(abort) |
| Ben Cheng | 017f438 | 2012-05-08 13:36:37 -0700 | [diff] [blame] | 39 | stmfd sp!, {r3, r14} |
| Christopher Ferris | ed45970 | 2013-12-02 17:44:53 -0800 | [diff] [blame] | 40 | .cfi_def_cfa_offset 8 |
| 41 | .cfi_rel_offset r3, 0 |
| 42 | .cfi_rel_offset r14, 4 |
| Elliott Hughes | 09289d9 | 2014-02-20 11:51:11 -0800 | [diff] [blame] | 43 | bl PIC_SYM(__libc_android_abort, PLT) |
| Ben Cheng | 017f438 | 2012-05-08 13:36:37 -0700 | [diff] [blame] | 44 | END(abort) |