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688903eb | 1 | /* Copyright (C) 2002-2018 Free Software Foundation, Inc. |
76a50749 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
76a50749 UD |
18 | |
19 | #include <setjmp.h> | |
20 | #include <stdlib.h> | |
21 | #include "pthreadP.h" | |
8dea90aa | 22 | #include <jmpbuf-unwind.h> |
76a50749 UD |
23 | |
24 | void | |
25 | __pthread_cleanup_upto (__jmp_buf target, char *targetframe) | |
26 | { | |
27 | struct pthread *self = THREAD_SELF; | |
28 | struct _pthread_cleanup_buffer *cbuf; | |
29 | ||
675620f7 UD |
30 | /* Adjust all pointers used in comparisons, so that top of thread's |
31 | stack is at the top of address space. Without that, things break | |
32 | if stack is allocated above the main stack. */ | |
33 | uintptr_t adj = (uintptr_t) self->stackblock + self->stackblock_size; | |
34 | uintptr_t targetframe_adj = (uintptr_t) targetframe - adj; | |
35 | ||
76a50749 | 36 | for (cbuf = THREAD_GETMEM (self, cleanup); |
675620f7 | 37 | cbuf != NULL && _JMPBUF_UNWINDS_ADJ (target, cbuf, adj); |
76a50749 UD |
38 | cbuf = cbuf->__prev) |
39 | { | |
40 | #if _STACK_GROWS_DOWN | |
675620f7 | 41 | if ((uintptr_t) cbuf - adj <= targetframe_adj) |
76a50749 UD |
42 | { |
43 | cbuf = NULL; | |
44 | break; | |
45 | } | |
46 | #elif _STACK_GROWS_UP | |
675620f7 | 47 | if ((uintptr_t) cbuf - adj >= targetframe_adj) |
76a50749 UD |
48 | { |
49 | cbuf = NULL; | |
50 | break; | |
51 | } | |
52 | #else | |
53 | # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" | |
54 | #endif | |
55 | ||
56 | /* Call the cleanup code. */ | |
57 | cbuf->__routine (cbuf->__arg); | |
58 | } | |
59 | ||
60 | THREAD_SETMEM (self, cleanup, cbuf); | |
61 | } | |
334fcf2a | 62 | hidden_def (__pthread_cleanup_upto) |