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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 __sparc64_CONTEXT_H__
  30. #define __sparc64_CONTEXT_H__
  31.  
  32. #ifndef __sparc64_STACK_H__
  33. # include <arch/stack.h>
  34. #endif
  35.  
  36. #ifndef __sparc64_TYPES_H__
  37. # include <arch/types.h>
  38. #endif
  39.  
  40. #ifndef __ALIGN_H__
  41. # include <align.h>
  42. #endif
  43.  
  44. #define SP_DELTA    STACK_WINDOW_SAVE_AREA_SIZE
  45.  
  46. #ifdef context_set
  47. #undef context_set
  48. #endif
  49.  
  50. #define context_set(c, _pc, stack, size)                                \
  51.         (c)->pc = ((__address) _pc) - 8;                                \
  52.         (c)->sp = ((__address) stack) + ALIGN_UP((size), STACK_ALIGNMENT) - (STACK_BIAS + SP_DELTA);    \
  53.     (c)->fp = -STACK_BIAS;                                      \
  54.     (c)->cleanwin = 0
  55.    
  56.  
  57. /*
  58.  * Only save registers that must be preserved across
  59.  * function calls.
  60.  */
  61. struct context {
  62.     __address sp;       /* %o6 */
  63.     __address pc;       /* %o7 */
  64.     __u64 i0;
  65.     __u64 i1;
  66.     __u64 i2;
  67.     __u64 i3;
  68.     __u64 i4;
  69.     __u64 i5;
  70.     __address fp;       /* %i6 */
  71.     __address i7;
  72.     __u64 l0;
  73.     __u64 l1;
  74.     __u64 l2;
  75.     __u64 l3;
  76.     __u64 l4;
  77.     __u64 l5;
  78.     __u64 l6;
  79.     __u64 l7;
  80.     ipl_t ipl;
  81.     __u64 cleanwin;
  82. };
  83.  
  84. #endif
  85.