1 /* POSIX.1 sigaction call for Linux/SPARC.
2 Copyright (C) 1997-2000,2002,2003,2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx), 1997.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 Ported to uClibc from glibc: 090520:
22 Jan Buchholz, KIP, Uni Heidelberg <jan.buchholz@kip.uni-heidelberg.de>
23 Austin Foxley, Ceton Corporation <austinf@cetoncorp.com>
29 #include <sys/syscall.h>
30 #include <bits/kernel_sigaction.h>
33 _syscall5(int, rt_sigaction, int, a, int, b, int, c, int, d, int, e)
34 static void __rt_sigreturn_stub(void);
35 static void __sigreturn_stub(void);
37 int __libc_sigaction(int sig, const struct sigaction *act, struct sigaction *oact)
40 struct sigaction kact, koact;
41 unsigned long stub = 0;
44 kact.sa_handler = act->sa_handler;
45 memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
46 if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0)
47 stub = (unsigned long) &__rt_sigreturn_stub;
49 stub = (unsigned long) &__sigreturn_stub;
51 kact.sa_restorer = NULL;
54 /* XXX The size argument hopefully will have to be changed to the
55 * real size of the user-level sigset_t. */
56 ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0,
57 oact ? &koact : 0, stub, _NSIG / 8);
59 if (oact && ret >= 0) {
60 oact->sa_handler = koact.sa_handler;
61 memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
62 oact->sa_flags = koact.sa_flags;
63 oact->sa_restorer = koact.sa_restorer;
69 #ifndef LIBC_SIGACTION
70 # ifndef __UCLIBC_HAS_THREADS__
71 strong_alias(__libc_sigaction,sigaction)
72 libc_hidden_def(sigaction)
74 weak_alias(__libc_sigaction,sigaction)
75 libc_hidden_weak(sigaction)
81 __rt_sigreturn_stub(void)
87 : "i" (__NR_rt_sigreturn)
91 __sigreturn_stub(void)
97 : "i" (__NR_sigreturn)