/* $NetBSD: mcontext.h,v 1.5 2024/11/30 01:04:13 christos Exp $ */

/*-
 * Copyright (c) 2014 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas of 3am Software Foundry.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */
#ifndef _OR1K_MCONTEXT_H_
#define _OR1K_MCONTEXT_H_

/*
 */

#define _NGREG  33              /* GR1-31, FPCSR */

typedef __int64_t       __greg_t;
typedef __greg_t        __gregset_t[_NGREG];

#define _REG_R1         0
#define _REG_R2         1
#define _REG_R3         2
#define _REG_R4         3
#define _REG_R5         4
#define _REG_R6         5
#define _REG_R7         6
#define _REG_R8         7
#define _REG_R9         8
#define _REG_R10        9
#define _REG_R11        10
#define _REG_R12        11
#define _REG_R13        12
#define _REG_R14        13
#define _REG_R15        14
#define _REG_R16        15
#define _REG_R17        16
#define _REG_R18        17
#define _REG_R19        18
#define _REG_R20        19
#define _REG_R21        20
#define _REG_R22        21
#define _REG_R23        22
#define _REG_R24        23
#define _REG_R25        24
#define _REG_R26        25
#define _REG_R27        26
#define _REG_R28        27
#define _REG_R29        28
#define _REG_R30        29
#define _REG_R31        30
#define _REG_PC         31
#define _REG_FPCSR      32

#define _REG_SP         _REG_R1
#define _REG_LR         _REG_R9
#define _REG_TP         _REG_R10
#define _REG_RV         _REG_R11
#define _REG_GP         _REG_R16

typedef struct {
        __gregset_t     __gregs;        /* General Purpose Register set */
        __greg_t        __spare[8];     /* future proof */
} mcontext_t;

/* Machine-dependent uc_flags */
#define _UC_TLSBASE     0x00080000      /* see <sys/ucontext.h> */

#define _UC_MACHINE_SP(uc)      ((uc)->uc_mcontext.__gregs[_REG_SP])
#define _UC_MACHINE_FP(uc)      ((uc)->uc_mcontext.__gregs[_REG_R2])
#define _UC_MACHINE_PC(uc)      ((uc)->uc_mcontext.__gregs[_REG_PC])
#define _UC_MACHINE_INTRV(uc)   ((uc)->uc_mcontext.__gregs[_REG_RV])

#define _UC_MACHINE_SET_PC(uc, pc)      _UC_MACHINE_PC(uc) = (pc)

#endif /* !_OR1K_MCONTEXT_H_ */