diff options
Diffstat (limited to 'lib/libc/alpha/sys/sigprocmask.S')
| -rw-r--r-- | lib/libc/alpha/sys/sigprocmask.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/lib/libc/alpha/sys/sigprocmask.S b/lib/libc/alpha/sys/sigprocmask.S new file mode 100644 index 0000000..0371e63 --- /dev/null +++ b/lib/libc/alpha/sys/sigprocmask.S @@ -0,0 +1,44 @@ +/* $NetBSD: sigprocmask.S,v 1.2 1996/10/17 03:08:21 cgd Exp $ */ + +/* + * Copyright (c) 1994, 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * Permission to use, copy, modify and distribute this software and + * its documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND + * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#include "SYS.h" + +LEAF(sigprocmask, 3) + mov a2, a5 /* safe */ + cmoveq a1, 1, a0 /* if set == NULL, how = SIG_BLOCK */ + beq a1, Ldoit /* and set = 0, and do it. */ + ldl a1, 0(a1) /* load the set from *set */ +Ldoit: CALLSYS_ERROR(sigprocmask) + beq a5, Lret /* if they don't want old mask, done */ + stl v0, 0(a5) /* otherwise, give it to them. */ +Lret: mov zero, v0 + RET + + END(sigprocmask) + |
