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ab18b1e1a3
* sysdeps/unix/sysv/linux/i386/sigaction.c: Make alias weak since it's overridden by libpthreads. * sysdeps/unix/sysv/linux/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/ia64/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: Likewise.
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* POSIX.1 sigaction call for Linux/SPARC64.
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Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx) and
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Jakub Jelinek (jj@ultra.linux.cz).
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <string.h>
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#include <syscall.h>
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#include <sysdep.h>
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#include <sys/signal.h>
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#include <errno.h>
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#include <kernel_sigaction.h>
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/* SPARC 64bit userland requires a kernel that has rt signals anyway. */
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static void __rt_sigreturn_stub (void);
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int
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__libc_sigaction (int sig, __const struct sigaction *act,
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struct sigaction *oact)
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{
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int ret;
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struct kernel_sigaction kact, koact;
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unsigned long stub = ((unsigned long) &__rt_sigreturn_stub) - 8;
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if (act)
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{
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kact.k_sa_handler = act->sa_handler;
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memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
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kact.sa_flags = act->sa_flags;
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kact.sa_restorer = NULL;
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}
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/* XXX The size argument hopefully will have to be changed to the
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real size of the user-level sigset_t. */
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ret = INLINE_SYSCALL (rt_sigaction, 5, sig,
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act ? __ptrvalue (&kact) : 0,
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oact ? __ptrvalue (&koact) : 0, stub, _NSIG / 8);
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if (oact && ret >= 0)
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{
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oact->sa_handler = koact.k_sa_handler;
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memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
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oact->sa_flags = koact.sa_flags;
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oact->sa_restorer = koact.sa_restorer;
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}
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return ret;
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}
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weak_alias (__libc_sigaction, __sigaction);
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weak_alias (__libc_sigaction, sigaction);
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static void
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__rt_sigreturn_stub (void)
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{
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__asm__ ("mov %0, %%g1\n\t"
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"ta 0x6d\n\t"
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: /* no outputs */
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: "i" (__NR_rt_sigreturn));
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}
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