| /* Copyright (C) 2002-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <setjmp.h> |
| #include <stdlib.h> |
| #include "pthreadP.h" |
| #include <jmpbuf-unwind.h> |
| |
| void |
| __pthread_cleanup_upto (__jmp_buf target, char *targetframe) |
| { |
| struct pthread *self = THREAD_SELF; |
| struct _pthread_cleanup_buffer *cbuf; |
| |
| /* Adjust all pointers used in comparisons, so that top of thread's |
| stack is at the top of address space. Without that, things break |
| if stack is allocated above the main stack. */ |
| uintptr_t adj = (uintptr_t) self->stackblock + self->stackblock_size; |
| uintptr_t targetframe_adj = (uintptr_t) targetframe - adj; |
| |
| for (cbuf = THREAD_GETMEM (self, cleanup); |
| cbuf != NULL && _JMPBUF_UNWINDS_ADJ (target, cbuf, adj); |
| cbuf = cbuf->__prev) |
| { |
| #if _STACK_GROWS_DOWN |
| if ((uintptr_t) cbuf - adj <= targetframe_adj) |
| { |
| cbuf = NULL; |
| break; |
| } |
| #elif _STACK_GROWS_UP |
| if ((uintptr_t) cbuf - adj >= targetframe_adj) |
| { |
| cbuf = NULL; |
| break; |
| } |
| #else |
| # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" |
| #endif |
| |
| /* Call the cleanup code. */ |
| cbuf->__routine (cbuf->__arg); |
| } |
| |
| THREAD_SETMEM (self, cleanup, cbuf); |
| } |
| hidden_def (__pthread_cleanup_upto) |
