blob: 21a10d4d0a87e7a24316724a182d89976dded82d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/*
* SYS-ASSERT
* Copyright (c) 2012-2013 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <stdio.h>
#include <ucontext.h>
#include <libunwind.h>
#include <execinfo.h>
#include "util.h"
int dump_callstack(void **callstack_addrs, int size, void *context, int retry)
{
ucontext_t *ucontext = context;
int count;
if (!callstack_addrs)
return 0;
if (!retry && (context && ((int)ucontext->uc_mcontext.pc != 0)))
count = unw_backtrace(callstack_addrs, size);
else
count = backtrace(callstack_addrs, size);
if (count > CALLSTACK_BASE) {
count -= CALLSTACK_BASE;
} else if (context) {
callstack_addrs[CALLSTACK_BASE] = (long *)ucontext->uc_mcontext.pc;
callstack_addrs[CALLSTACK_BASE] = (long *)ucontext->uc_mcontext.regs[30]; /* LR (link register) */
count = 2;
} else {
count = 0;
}
return count;
};
|
