/* POSIX.1 sigaction call for Linux/SPARC. Copyright (C) 1997-2000,2002,2003,2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx), 1997. 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. Ported to uClibc from glibc: 090520: Jan Buchholz, KIP, Uni Heidelberg <jan.buchholz@kip.uni-heidelberg.de> Austin Foxley, Ceton Corporation <austinf@cetoncorp.com> */ #include <errno.h> #include <signal.h> #include <string.h> #include <sys/syscall.h> #include <bits/kernel_sigaction.h> _syscall5(int, rt_sigaction, int, a, int, b, int, c, int, d, int, e) static void __rt_sigreturn_stub(void); static void __sigreturn_stub(void); int __libc_sigaction(int sig, const struct sigaction *act, struct sigaction *oact) { int ret; struct sigaction kact, koact; unsigned long stub = 0; if (act) { kact.sa_handler = act->sa_handler; memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t)); if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0) stub = (unsigned long) &__rt_sigreturn_stub; else stub = (unsigned long) &__sigreturn_stub; stub -= 8; 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 ? &kact : 0, oact ? &koact : 0, stub, _NSIG / 8); if (oact && ret >= 0) { oact->sa_handler = koact.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; } #ifndef LIBC_SIGACTION # ifndef __UCLIBC_HAS_THREADS__ strong_alias(__libc_sigaction,sigaction) libc_hidden_def(sigaction) # else weak_alias(__libc_sigaction,sigaction) libc_hidden_weak(sigaction) # endif #endif static void __rt_sigreturn_stub(void) { __asm__( "mov %0, %%g1\n\t" "ta 0x10\n\t" : /* no outputs */ : "i" (__NR_rt_sigreturn) ); } static void __sigreturn_stub(void) { __asm__( "mov %0, %%g1\n\t" "ta 0x10\n\t" : /* no outputs */ : "i" (__NR_sigreturn) ); }