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- /* Copyright (C) 1992 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- /* The sigvec system call on MIPS Ultrix takes an additional
- parameter, which is the address that is actually called when the
- signal occurs.
-
- When a signal occurs, we arrange for the kernel to call __handler.
- That will save the frame and stack pointers into the context, and
- then jump to this routine. See __handler.S.
-
- This code is based on sysdeps/unix/bsd/sun4/sigtramp.c, but it's
- different because since we get passed the user signal handler we
- don't actually need a trampoline. */
-
- #include <ansidecl.h>
- #include <signal.h>
- #include <stddef.h>
- #include <errno.h>
-
- /* The user's signal handler is called with three arguments. */
- typedef void (*handler_type) (int sig, int code, struct sigcontext *);
-
- /* Defined in signal.S. */
- extern __sighandler_t EXFUN(__raw_signal, (int sig, __sighandler_t func,
- void (*)(int sig, int code,
- struct sigcontext *,
- handler_type)));
-
- extern void EXFUN(__handler, (int sig, int code,
- struct sigcontext *,
- handler_type));
-
- __sighandler_t
- DEFUN(signal, (sig, func),
- int sig AND __sighandler_t func)
- {
- return __raw_signal (sig, func, __handler);
- }
-