URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [linuxthreads/] [ptlongjmp.c] - Rev 207
Compare with Previous | Blame | View Log
/* Linuxthreads - a simple clone()-based implementation of Posix */ /* threads for Linux. */ /* Copyright (C) 1998 Xavier Leroy (Xavier.Leroy@inria.fr) */ /* */ /* This program is free software; you can redistribute it and/or */ /* modify it under the terms of the GNU Library General Public License */ /* as published by the Free Software Foundation; either version 2 */ /* of the License, or (at your option) any later version. */ /* */ /* This program 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 Library General Public License for more details. */ /* Redefine siglongjmp and longjmp so that they interact correctly with cleanup handlers */ #include <setjmp.h> #include "pthread.h" #include "internals.h" /* These functions are not declared anywhere since they shouldn't be used at another place but here. */ extern void __libc_siglongjmp (sigjmp_buf env, int val) __attribute__ ((noreturn)); extern void __libc_longjmp (jmp_buf env, int val) __attribute__ ((noreturn)); static void pthread_cleanup_upto(jmp_buf target) { pthread_descr self = thread_self(); struct _pthread_cleanup_buffer * c; char *currentframe = CURRENT_STACK_FRAME; for (c = THREAD_GETMEM(self, p_cleanup); c != NULL && _JMPBUF_UNWINDS(target, c); c = c->__prev) { #if _STACK_GROWS_DOWN if ((char *) c <= currentframe) { c = NULL; break; } #elif _STACK_GROWS_UP if ((char *) c >= currentframe) { c = NULL; break; } #else # error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP" #endif c->__routine(c->__arg); } THREAD_SETMEM(self, p_cleanup, c); if (THREAD_GETMEM(self, p_in_sighandler) && _JMPBUF_UNWINDS(target, THREAD_GETMEM(self, p_in_sighandler))) THREAD_SETMEM(self, p_in_sighandler, NULL); } void siglongjmp(sigjmp_buf env, int val) { pthread_cleanup_upto(env.__buf); __libc_siglongjmp(env, val); } void longjmp(jmp_buf env, int val) { pthread_cleanup_upto(env); __libc_longjmp(env, val); }