source: mainline/arch/ia64/include/context.h@ d5d2a3f

/*
 * 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 __ia64_CONTEXT_H__
#define __ia64_CONTEXT_H__

#include <arch/types.h>

/*
 * context_save() and context_restore() are both leaf procedures.
 * No need to allocate scratch area.
 */
#define SP_DELTA        0

#ifdef context_set
#undef context_set
#endif

#define context_set(c, _pc, stack, size)        \
        (c)->pc = (__address) _pc;              \
        (c)->bsp = (__address) stack;           \
        (c)->sp = ((__address) stack) + (size) - SP_DELTA;

struct context {

        /*
         * Application registers
         */
        __u64 ar_pfs;
        __u64 ar_unat_caller;
        __u64 ar_unat_callee;
        __u64 ar_rsc;
        __u64 bsp;      /* ar_bsp */
        __u64 ar_rnat;
        __u64 ar_lc;
        __u64 ar_ec;
        __u64 ar_ccv;
        __u64 ar_csd;
        __u64 ar_ssd;

        /*
         * General registers
         */
        __u64 r1;
        __u64 r2;
        __u64 r3;
        __u64 r4;
        __u64 r5;
        __u64 r6;
        __u64 r7;
        __u64 r8;
        __u64 r9;
        __u64 r10;
        __u64 r11;
        __u64 sp;               /* r12 */
        __u64 r13;
        __u64 r14;
        __u64 r15;
        __u64 r16;
        __u64 r17;
        __u64 r18;
        __u64 r19;
        __u64 r20;
        __u64 r21;
        __u64 r22;
        __u64 r23;
        __u64 r24;
        __u64 r25;
        __u64 r26;
        __u64 r27;
        __u64 r28;
        __u64 r29;
        __u64 r30;
        __u64 r31;
        
        /*
         * Branch registers
         */
        __u64 pc;               /* b0 */
        __u64 b1;
        __u64 b2;
        __u64 b3;
        __u64 b4;
        __u64 b5;
        __u64 b6;
        __u64 b7;

        /*
         * Predicate registers
         */
        __u64 pr;
        
        pri_t pri;
} __attribute__ ((packed));

#endif