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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/unix/bsd/ultrix4/mips/sigtramp.c
1 /* Copyright (C) 1992 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
19 /* The sigvec system call on MIPS Ultrix takes an additional
20 parameter, which is the address that is actually called when the
23 When a signal occurs, we arrange for the kernel to call __handler.
24 That will save the frame and stack pointers into the context, and
25 then jump to this routine. See __handler.S.
27 This code is based on sysdeps/unix/bsd/sun4/sigtramp.c, but it's
28 different because since we get passed the user signal handler we
29 don't actually need a trampoline. */
36 /* The user's signal handler is called with three arguments. */
37 typedef void (*handler_type
) (int sig
, int code
, struct sigcontext
*);
39 /* Defined in __raw_sigvec.S. */
40 extern int EXFUN(__raw_sigvec
, (int sig
, CONST
struct sigvec
*vec
,
42 void (*)(int sig
, int code
,
46 extern void EXFUN(__handler
, (int sig
, int code
,
51 DEFUN(__sigvec
, (sig
, vec
, ovec
),
52 int sig AND CONST
struct sigvec
*vec AND
struct sigvec
*ovec
)
54 return __raw_sigvec (sig
, vec
, ovec
, __handler
);