/*-
 * SPDX-License-Identifier: BSD-4-Clause
 *
 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
 * Copyright (C) 1995, 1996 TooLs GmbH.
 * All rights reserved.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by TooLs GmbH.
 * 4. The name of TooLs GmbH may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
 *
 * $NetBSD: signal.h,v 1.4 1998/09/14 02:48:34 thorpej Exp $
 */

#ifndef _MACHINE_UCONTEXT_H_
#define _MACHINE_UCONTEXT_H_

typedef struct __mcontext {
        int             mc_vers;
        int             mc_flags;
#define _MC_FP_VALID    0x01
#define _MC_AV_VALID    0x02
#define _MC_VS_VALID    0x04
        int             mc_onstack;             /* saved onstack flag */
        int             mc_len;                 /* sizeof(__mcontext) */
        __uint64_t      mc_avec[32*2];          /* vector register file */
        __uint32_t      mc_av[2];
        __register_t    mc_frame[42];
        __uint64_t      mc_fpreg[33];
        __uint64_t      mc_vsxfpreg[32];        /* low-order half of VSR0-31 */
} mcontext_t __aligned(16);

#if defined(_KERNEL) && defined(__powerpc64__)
typedef struct __mcontext32 {
        int             mc_vers;
        int             mc_flags;
#define _MC_FP_VALID    0x01
#define _MC_AV_VALID    0x02
#define _MC_VS_VALID    0x04
        int             mc_onstack;             /* saved onstack flag */
        int             mc_len;                 /* sizeof(__mcontext) */
        uint64_t        mc_avec[32*2];          /* vector register file */
        uint32_t        mc_av[2];
        uint32_t        mc_frame[42];
        uint64_t        mc_fpreg[33];
        uint64_t        mc_vsxfpreg[32];        /* low-order half of VSR0-31 */
} mcontext32_t __aligned(16);
#endif

/* GPRs and supervisor-level regs */
#define mc_gpr          mc_frame
#define mc_lr           mc_frame[32]
#define mc_cr           mc_frame[33]
#define mc_xer          mc_frame[34]
#define mc_ctr          mc_frame[35]
#define mc_srr0         mc_frame[36]
#define mc_srr1         mc_frame[37]
#define mc_exc          mc_frame[38]
#define mc_dar          mc_frame[39]
#define mc_dsisr        mc_frame[40]

/* floating-point state */
#define mc_fpscr        mc_fpreg[32]

/* altivec state */
#define mc_vscr         mc_av[0]
#define mc_vrsave       mc_av[1]

#define _MC_VERSION     0x1
#define _MC_VERSION_KSE 0xee    /* partial ucontext for libpthread */

#endif  /* !_MACHINE_UCONTEXT_H_ */