1 /* Copyright (C) 1993-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by David Mosberger (davidm@azstarnet.com).
5 The GNU C Library is free software; you can redistribute it and/or
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.
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
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <http://www.gnu.org/licenses/>. */
23 /* When there is kernel support for more than 64 signals, we'll have to
24 switch to a new system call convention here. */
27 __sigprocmask (int how, const sigset_t *set, sigset_t *oset)
29 unsigned long int setval;
33 setval = set->__val[0];
37 how = SIG_BLOCK; /* ensure blocked mask doesn't get changed */
40 result = INLINE_SYSCALL (osf_sigprocmask, 2, how, setval);
42 /* If there are ever more than 63 signals, we need to recode this
43 in assembler since we wouldn't be able to distinguish a mask of
44 all 1s from -1, but for now, we're doing just fine... */
49 oset->__val[0] = result;
50 result = _SIGSET_NWORDS;
52 oset->__val[result] = 0;
57 weak_alias (__sigprocmask, sigprocmask);