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28f540f4 | 1 | /* Declarations for handling faults in the signal thread. |
10dc2a90 UD |
2 | Copyright (C) 1994, 1996 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. | |
28f540f4 | 4 | |
10dc2a90 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 9 | |
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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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
28f540f4 | 14 | |
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15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
28f540f4 RM |
19 | |
20 | #ifndef _HURD_FAULT_H | |
21 | #define _HURD_FAULT_H | |
22 | ||
7974fe21 | 23 | #include <hurd/sigpreempt.h> |
28f540f4 RM |
24 | #include <setjmp.h> |
25 | ||
26 | /* Call this before code that might fault in the signal thread; SIGNO is | |
27 | the signal expected to possibly arrive. This behaves like setjmp: it | |
28 | returns zero the first time, and returns again nonzero if the signal | |
29 | does arrive. */ | |
30 | ||
7974fe21 | 31 | #define _hurdsig_catch_fault(sigset, firstcode, lastcode) \ |
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32 | (_hurdsig_fault_preemptor.signals = (sigset), \ |
33 | _hurdsig_fault_preemptor.first = (long int) (firstcode), \ | |
34 | _hurdsig_fault_preemptor.last = (long int) (lastcode), \ | |
7974fe21 | 35 | setjmp (_hurdsig_fault_env)) |
28f540f4 RM |
36 | |
37 | /* Call this at the end of a section protected by _hurdsig_catch_fault. */ | |
38 | ||
39 | #define _hurdsig_end_catch_fault() \ | |
10dc2a90 | 40 | (_hurdsig_fault_preemptor.signals = 0) |
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41 | |
42 | extern jmp_buf _hurdsig_fault_env; | |
10dc2a90 | 43 | extern struct hurd_signal_preemptor _hurdsig_fault_preemptor; |
28f540f4 | 44 | |
28f540f4 | 45 | |
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46 | #define _hurdsig_catch_memory_fault(object) \ |
47 | _hurdsig_catch_fault (sigmask (SIGSEGV) | sigmask (SIGBUS), \ | |
48 | (object), (object) + 1) | |
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49 | |
50 | ||
7974fe21 | 51 | #endif /* hurdfault.h */ |