bf47fa2344
1998-06-16 David S. Miller <davem@dm.cobaltmicro.com> * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): During rtld bootstrap, always perform flushes as the kernel will emulate it when the underlying cpu does not implement flush. * sysdeps/unix/sysv/linux/sparc/sys/kernel_termios.h: Move... * sysdeps/unix/sysv/linux/sparc/kernel_termios.h: ...to here. * sysdeps/unix/sysv/linux/sparc/sparc32/__sigtrampoline.S: Remove. * sysdeps/unix/sysv/linux/sparc/sparc32/Makefile: No longer build trampoline code. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Branch to label .Lerror not __clone_syscall_error. (.Lerror): Fixup EINVAL setting. * sysdeps/unix/sysv/linux/sparc/sparc32/getgroups.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/setgroups.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list (__syscall_getgroups, __syscall_setgroups): Add. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (__sigaction): Member name is k_sa_handler. Use memcpy to copy around sa_mask data. * math/math.h: Include bits/nan.h when compiling for ISO C 9x.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* POSIX.1 sigaction call for Linux/SPARC.
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Copyright (C) 1997, 1998 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), 1997.
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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 <syscall.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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/* The variable is shared between all wrappers around signal handling
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functions which have RT equivalents. */
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int __libc_missing_rt_sigs;
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int
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__sigaction (int sig, __const struct sigaction *act, struct sigaction *oact)
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{
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int ret;
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struct kernel_sigaction k_sigact, k_osigact;
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/* Magic to tell the kernel we are using "new-style" signals, in that
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the signal table is not kept in userspace. Not the same as the
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really-new-style rt signals. */
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sig = -sig;
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if (act)
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{
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k_sigact.k_sa_handler = act->sa_handler;
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memcpy (&k_sigact.sa_mask, &act->sa_mask, sizeof (sigset_t));
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k_sigact.sa_flags = act->sa_flags;
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}
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{
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register int r_syscallnr __asm__("%g1") = __NR_sigaction;
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register int r_sig __asm__("%o0") = sig;
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register struct kernel_sigaction *r_act __asm__("%o1");
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register struct kernel_sigaction *r_oact __asm__("%o2");
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r_act = act ? &k_sigact : NULL;
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r_oact = oact ? &k_osigact : NULL;
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__asm__ __volatile__("t 0x10\n\t"
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"bcc 1f\n\t"
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" nop\n\t"
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" sub %%g0,%%o0,%%o0\n"
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"1:"
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: "=r"(r_sig)
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: "r"(r_syscallnr), "r"(r_act), "r"(r_oact),
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"0"(r_sig));
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ret = r_sig;
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}
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if (ret >= 0)
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{
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if (oact)
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{
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oact->sa_handler = k_osigact.k_sa_handler;
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memcpy (&oact->sa_mask, &k_osigact.sa_mask, sizeof (sigset_t));
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oact->sa_flags = k_osigact.sa_flags;
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oact->sa_restorer = NULL;
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}
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return 0;
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}
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__set_errno (-ret);
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return -1;
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}
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weak_alias (__sigaction, sigaction);
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