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55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* Copyright (C) 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* The sigvec system call on MIPS Ultrix takes an additional
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parameter, which is the address that is actually called when the
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signal occurs.
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When a signal occurs, we arrange for the kernel to call __handler.
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That will save the frame and stack pointers into the context, and
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then jump to this routine. See __handler.S.
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This code is based on sysdeps/unix/bsd/sun4/sigtramp.c, but it's
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different because since we get passed the user signal handler we
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don't actually need a trampoline. */
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#include <ansidecl.h>
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#include <signal.h>
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#include <stddef.h>
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#include <errno.h>
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/* The user's signal handler is called with three arguments. */
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typedef void (*handler_type) (int sig, int code, struct sigcontext *);
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/* Defined in signal.S. */
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extern __sighandler_t EXFUN(__raw_signal, (int sig, __sighandler_t func,
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void (*)(int sig, int code,
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struct sigcontext *,
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handler_type)));
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extern void EXFUN(__handler, (int sig, int code,
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struct sigcontext *,
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handler_type));
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__sighandler_t
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DEFUN(signal, (sig, func),
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int sig AND __sighandler_t func)
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{
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return __raw_signal (sig, func, __handler);
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}
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