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