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  1. /*
  2.  * Copyright (C) 2001-2004 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 __mips_CONTEXT_H__
  30. #define __mips_CONTEXT_H__
  31.  
  32. #define STACK_ITEM_SIZE 4
  33.  
  34. /* These are offsets into the register dump saved
  35.  * on exception entry
  36.  */
  37. #define EOFFSET_AT 0
  38. #define EOFFSET_V0 4
  39. #define EOFFSET_V1 8
  40. #define EOFFSET_A0 12
  41. #define EOFFSET_A1 16
  42. #define EOFFSET_A2 20
  43. #define EOFFSET_A3 24
  44. #define EOFFSET_A4 28
  45. #define EOFFSET_T1 32
  46. #define EOFFSET_T2 36
  47. #define EOFFSET_T3 40
  48. #define EOFFSET_T4 44
  49. #define EOFFSET_T5 48
  50. #define EOFFSET_T6 52
  51. #define EOFFSET_T7 56
  52. #define EOFFSET_T8 60
  53. #define EOFFSET_T9 64
  54. #define EOFFSET_S0 68
  55. #define EOFFSET_S1 72
  56. #define EOFFSET_S2 76
  57. #define EOFFSET_S3 80
  58. #define EOFFSET_S4 84
  59. #define EOFFSET_S5 88
  60. #define EOFFSET_S6 92
  61. #define EOFFSET_S7 96
  62. #define EOFFSET_S8 100
  63. #define EOFFSET_GP 104
  64. #define EOFFSET_RA 108
  65. #define EOFFSET_SP 112
  66.  
  67. #define EOFFSET_LO 116
  68. #define EOFFSET_HI 120
  69. #define EOFFSET_STATUS 124
  70.  
  71. #define REGISTER_SPACE 128
  72.  
  73. /*
  74.  * Put one item onto the stack to support get_stack_base().
  75.  */
  76. #define SP_DELTA    (0+STACK_ITEM_SIZE)
  77.  
  78.  
  79. #ifndef __ASM__
  80.  
  81. #ifndef __mips_TYPES_H_
  82. # include <arch/types.h>
  83. #endif
  84.  
  85. /*
  86.  * Only save registers that must be preserved across
  87.  * function calls.
  88.  */
  89. struct context {
  90.     __u32 sp;
  91.     __u32 pc;
  92.    
  93.     __u32 s0;
  94.     __u32 s1;
  95.     __u32 s2;
  96.     __u32 s3;
  97.     __u32 s4;
  98.     __u32 s5;
  99.     __u32 s6;
  100.     __u32 s7;
  101.     __u32 s8;
  102.     __u32 gp;
  103.  
  104.     __u32 pri;
  105. };
  106.  
  107. #endif /* __ASM__ */
  108.  
  109. #endif
  110.