105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/* $NetBSD: mcontext.h,v 1.5 2005/12/11 12:18:58 christos Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SH3_MCONTEXT_H_
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#define _SH3_MCONTEXT_H_
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/*
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* Layout of mcontext_t for the sh3 architecture.
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*/
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#define _NGREG 22
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typedef int __greg_t;
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typedef __greg_t __gregset_t[_NGREG];
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#define _REG_EXPEVT 0
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#define _REG_PC 1
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#define _REG_SR 2
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#define _REG_MACL 3
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#define _REG_MACH 4
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#define _REG_PR 5
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#define _REG_R14 6
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#define _REG_R13 7
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#define _REG_R12 8
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#define _REG_R11 9
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#define _REG_R10 10
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#define _REG_R9 11
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#define _REG_R8 12
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#define _REG_R7 13
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#define _REG_R6 14
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#define _REG_R5 15
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#define _REG_R4 16
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#define _REG_R3 17
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#define _REG_R2 18
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#define _REG_R1 19
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#define _REG_R0 20
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#define _REG_R15 21
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/* Convenience synonym */
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#define _REG_SP _REG_R15
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/*
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* FPU state description.
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* XXX: kernel doesn't support FPU yet, so this is just a placeholder.
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*/
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typedef struct {
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int __fpr_fpscr;
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int __fpr_fpul;
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/* XXX: redefine as a union when we do support FPU */
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int __fpr_regs[32]; /* SH3E has 16, SH4 has 32 */
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} __fpregset_t;
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typedef struct {
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__gregset_t __gregs;
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__fpregset_t __fpregs;
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} mcontext_t;
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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/*
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* Machine dependent uc_flags
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*/
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#define _UC_SETSTACK 0x10000
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#define _UC_CLRSTACK 0x20000
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#endif /* !_SH3_MCONTEXT_H_ */
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