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/* $OpenBSD: signal.h,v 1.8 2006/01/09 18:18:37 millert Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)signal.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _MIPS_SIGNAL_H_
#define _MIPS_SIGNAL_H_
/* On Mips32, jmpbuf begins with optional 4-byte filler so that
* all saved FP regs are aligned on 8-byte boundary, despite this whole
* struct being mis-declared to users as an array of (4-byte) longs.
* All the following offsets are then from the rounded-up base addr
*/
/* Fields of same size on all MIPS abis: */
#define SC_MAGIC (0*4) /* 4 bytes, identify jmpbuf */
#define SC_MASK (1*4) /* 4 bytes, saved signal mask */
#define SC_FPSR (2*4) /* 4 bytes, floating point control/status reg */
/* filler2 (3*4) 4 bytes, pad to 8-byte boundary */
/* Registers that are 4-byte on mips32 o32, and 8-byte on mips64 n64 abi */
#define SC_REGS_SAVED 12 /* ra,gp,sp,s0-s8 */
#define SC_REGS (4*4) /* SC_REGS_SAVED*REGSZ bytes */
/* Floating pt registers are 8-bytes on all abis,
* but the number of saved fp regs varies for o32/n32 versus n64 abis:
*/
#ifdef __LP64__
#define SC_FPREGS_SAVED 8 /* all fp regs f24,f25,f26,f27,f28,f29,f30,f31 */
#else
#define SC_FPREGS_SAVED 6 /* even fp regs f20,f22,f24,f26,f28,f30 */
#endif
#define SC_FPREGS (SC_REGS + SC_REGS_SAVED*REGSZ) /* SC_FPREGS_SAVED*REGSZ_FP bytes */
#define SC_BYTES (SC_FPREGS + SC_FPREGS_SAVED*REGSZ_FP)
#define SC_LONGS (SC_BYTES/REGSZ)
#ifdef __LP64__
/* SC_LONGS is 22, so _JBLEN should be 22 or larger */
#else
/* SC_LONGS is 28, but must also allocate dynamic-roundup filler.
so _JBLEN should be 29 or larger */
#endif
#endif /* !_MIPS_SIGNAL_H_ */
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