diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2004-02-14 05:22:43 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-02-14 05:22:43 +0000 |
| commit | e2982bf018ff39fcfb452012027479a07457fa92 (patch) | |
| tree | 62820a6b63ee85953b763f3393eb8b5a6bfe5f01 /nptl/pt-cleanup.c | |
| parent | 40b334afb47c606d39a5be4119378596dde2cffc (diff) | |
Update.
2004-01-29 Steven Munroe <sjmunroe@us.ibm.com>
* Makefile (libpthread-routines): Add pt-cleanup.
* pt-longjmp.c: Removed.
* pt-cleanup.c: Copied __pthread_cleanup_upto to here. New file.
* sysdeps/generic/pt-longjmp.c: Copied longjmp to here. New file.
* sysdeps/unix/sysv/linux/powerpc/Versions: New file.
Version longjmp, siglongjmp for GLIBC_2.3.4.
* sysdeps/unix/sysv/linux/powerpc/pt-longjmp.c: New File.
Diffstat (limited to 'nptl/pt-cleanup.c')
| -rw-r--r-- | nptl/pt-cleanup.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/nptl/pt-cleanup.c b/nptl/pt-cleanup.c new file mode 100644 index 0000000000..96836a14a1 --- /dev/null +++ b/nptl/pt-cleanup.c @@ -0,0 +1,64 @@ +/* Copyright (C) 2002, 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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) + |