/* Declarations for handling faults in the signal thread. Copyright (C) 1994, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library 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. 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _HURD_FAULT_H #define _HURD_FAULT_H #include <hurd/sigpreempt.h> #include <setjmp.h> /* Call this before code that might fault in the signal thread; SIGNO is the signal expected to possibly arrive. This behaves like setjmp: it returns zero the first time, and returns again nonzero if the signal does arrive. */ #define _hurdsig_catch_fault(sigset, firstcode, lastcode) \ (_hurdsig_fault_preemptor.signals = (sigset), \ _hurdsig_fault_preemptor.first = (long int) (firstcode), \ _hurdsig_fault_preemptor.last = (long int) (lastcode), \ setjmp (_hurdsig_fault_env)) /* Call this at the end of a section protected by _hurdsig_catch_fault. */ #define _hurdsig_end_catch_fault() \ (_hurdsig_fault_preemptor.signals = 0) extern jmp_buf _hurdsig_fault_env; extern struct hurd_signal_preemptor _hurdsig_fault_preemptor; #define _hurdsig_catch_memory_fault(object) \ _hurdsig_catch_fault (sigmask (SIGSEGV) | sigmask (SIGBUS), \ (object), (object) + 1) #endif /* hurdfault.h */