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