/*-
 * Copyright (c) 2014 Andrew Turner
 * Copyright (c) 2014-2015 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Andrew Turner under
 * sponsorship from the FreeBSD Foundation.
 *
 * 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 AUTHOR 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 AUTHOR 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.
 */

#ifdef __arm__
#include <arm/ucontext.h>
#else /* !__arm__ */

#ifndef _MACHINE_UCONTEXT_H_
#define _MACHINE_UCONTEXT_H_

struct gpregs {
        __register_t    gp_x[30];
        __register_t    gp_lr;
        __register_t    gp_sp;
        __register_t    gp_elr;
        __uint64_t      gp_spsr;
};

struct fpregs {
        __uint128_t     fp_q[32];
        __uint32_t      fp_sr;
        __uint32_t      fp_cr;
        int             fp_flags;
        int             fp_pad;
};

/*
 * Support for registers that don't fit into gpregs or fpregs, e.g. SVE.
 * There are some registers that have been added so are optional. To support
 * these create an array of headers that point at the register data.
 */
struct arm64_reg_context {
        __uint32_t      ctx_id;
        __uint32_t      ctx_size;
};

#define ARM64_CTX_END           0xa5a5a5a5
#define ARM64_CTX_SVE           0x00657673

struct sve_context {
        struct arm64_reg_context sve_ctx;
        __uint16_t      sve_vector_len;
        __uint16_t      sve_flags;
        __uint16_t      sve_reserved[2];
};

struct __mcontext {
        struct gpregs   mc_gpregs;
        struct fpregs   mc_fpregs;
        int             mc_flags;
#define _MC_FP_VALID    0x1             /* Set when mc_fpregs has valid data */
        int             mc_pad;         /* Padding */
        __uint64_t      mc_ptr;         /* Address of extra_regs struct */
        __uint64_t      mc_spare[7];    /* Space for expansion, set to zero */
};


typedef struct __mcontext mcontext_t;

#ifdef COMPAT_FREEBSD32
#include <compat/freebsd32/freebsd32_signal.h>
typedef struct __mcontext32 {
        uint32_t                mc_gregset[17];
        uint32_t                mc_vfp_size;
        uint32_t                mc_vfp_ptr;
        uint32_t                mc_spare[33];
} mcontext32_t;

typedef struct __ucontext32 {
        sigset_t                uc_sigmask;
        mcontext32_t            uc_mcontext;
        u_int32_t               uc_link;
        struct sigaltstack32    uc_stack;
        u_int32_t               uc_flags;
        u_int32_t               __spare__[4];
} ucontext32_t;

typedef struct __mcontext32_vfp {
        __uint64_t      mcv_reg[32];
        __uint32_t      mcv_fpscr;
} mcontext32_vfp_t;

#endif /* COMPAT_FREEBSD32 */

#endif  /* !_MACHINE_UCONTEXT_H_ */

#endif /* !__arm__ */