mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-28 23:34:53 +03:00
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* POSIX.1 sigaction call for Linux/SPARC64.
|
|
Copyright (C) 1997-2000,2002,2003,2005,2012 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Miguel de Icaza <miguel@nuclecu.unam.mx> and
|
|
Jakub Jelinek <jj@ultra.linux.cz>.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <string.h>
|
|
#include <syscall.h>
|
|
#include <sysdep.h>
|
|
#include <sys/signal.h>
|
|
#include <errno.h>
|
|
|
|
#include <kernel_sigaction.h>
|
|
|
|
/* SPARC 64bit userland requires a kernel that has rt signals anyway. */
|
|
|
|
static void __rt_sigreturn_stub (void);
|
|
|
|
int
|
|
__libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
|
|
{
|
|
int ret;
|
|
struct kernel_sigaction kact, koact;
|
|
unsigned long stub = ((unsigned long) &__rt_sigreturn_stub) - 8;
|
|
|
|
if (act)
|
|
{
|
|
kact.k_sa_handler = act->sa_handler;
|
|
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
|
|
kact.sa_flags = act->sa_flags;
|
|
kact.sa_restorer = NULL;
|
|
}
|
|
|
|
/* XXX The size argument hopefully will have to be changed to the
|
|
real size of the user-level sigset_t. */
|
|
ret = INLINE_SYSCALL (rt_sigaction, 5, sig,
|
|
act ? __ptrvalue (&kact) : 0,
|
|
oact ? __ptrvalue (&koact) : 0, stub, _NSIG / 8);
|
|
|
|
if (oact && ret >= 0)
|
|
{
|
|
oact->sa_handler = koact.k_sa_handler;
|
|
memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
|
|
oact->sa_flags = koact.sa_flags;
|
|
oact->sa_restorer = koact.sa_restorer;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
libc_hidden_def (__libc_sigaction)
|
|
|
|
#ifdef WRAPPER_INCLUDE
|
|
# include WRAPPER_INCLUDE
|
|
#endif
|
|
|
|
#ifndef LIBC_SIGACTION
|
|
weak_alias (__libc_sigaction, __sigaction);
|
|
libc_hidden_weak (__sigaction)
|
|
weak_alias (__libc_sigaction, sigaction);
|
|
#endif
|
|
|
|
static void
|
|
__rt_sigreturn_stub (void)
|
|
{
|
|
__asm__ ("mov %0, %%g1\n\t"
|
|
"ta 0x6d\n\t"
|
|
: /* no outputs */
|
|
: "i" (__NR_rt_sigreturn));
|
|
}
|