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/*

 * Copyright (C) 2005 Jakub Jermar

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - 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.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 __sparc64_CONTEXT_H__

#define __sparc64_CONTEXT_H__

#ifndef __sparc64_STACK_H__

#include <arch/stack.h>

#endif

#ifndef __sparc64_TYPES_H__

# include <arch/types.h>

#endif

#ifndef __ALIGN_H__

# include <align.h>

#endif

#define SP_DELTA    STACK_WINDOW_SAVE_AREA_SIZE

#ifdef context_set

#undef context_set

#endif

#define context_set(c, _pc, stack, size)                                \

        (c)->pc = ((__address) _pc) - 8;                                \

        (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - (STACK_BIAS + SP_DELTA);   \

    (c)->fp = -STACK_BIAS

/*

 * Only save registers that must be preserved across

 * function calls and that are not saved in caller's

 * register window.

 */

struct context {

    __u64 o1;

    __u64 o2;

    __u64 o3;

    __u64 o4;

    __u64 o5;

    __address sp;       /* %o6 */

    __address pc;       /* %o7 */

    __address fp;

    ipl_t ipl;

};

#endif