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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __ia64_CONTEXT_H__
  30. #define __ia64_CONTEXT_H__
  31.  
  32. #include <arch/types.h>
  33.  
  34. /*
  35.  * context_save() and context_restore() are both leaf procedures.
  36.  * No need to allocate scratch area.
  37.  */
  38. #define SP_DELTA    0
  39.  
  40. struct context {
  41.     __u64 pfs;
  42.     __u64 unat_caller;
  43.     __u64 unat_callee;
  44.  
  45.     /*
  46.      * General registers
  47.      */
  48.     __u64 r1;
  49.     __u64 r2;
  50.     __u64 r3;
  51.     __u64 r4;
  52.     __u64 r5;
  53.     __u64 r6;
  54.     __u64 r7;
  55.     __u64 r8;
  56.     __u64 r9;
  57.     __u64 r10;
  58.     __u64 r11;
  59.     __u64 sp;       /* r12 */
  60.     __u64 r13;
  61.     __u64 r14;
  62.     __u64 r15;
  63.     __u64 r16;
  64.     __u64 r17;
  65.     __u64 r18;
  66.     __u64 r19;
  67.     __u64 r20;
  68.     __u64 r21;
  69.     __u64 r22;
  70.     __u64 r23;
  71.     __u64 r24;
  72.     __u64 r25;
  73.     __u64 r26;
  74.     __u64 r27;
  75.     __u64 r28;
  76.     __u64 r29;
  77.     __u64 r30;
  78.     __u64 r31;
  79.    
  80.     /*
  81.      * Branch registers
  82.      */
  83.     __u64 pc;       /* b0 */
  84.     __u64 b1;
  85.     __u64 b2;
  86.     __u64 b3;
  87.     __u64 b4;
  88.     __u64 b5;
  89.     __u64 b6;
  90.     __u64 b7;
  91.  
  92.     /*
  93.      * Predicate registers
  94.      */
  95.     __u64 pr;
  96.    
  97.     pri_t pri;
  98. } __attribute__ ((packed));
  99.  
  100. #endif
  101.