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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  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 KERN_mips32_CONTEXT_OFFSET_H_
  30. #define KERN_mips32_CONTEXT_OFFSET_H_
  31.  
  32. #define OFFSET_SP      0x0
  33. #define OFFSET_PC      0x4
  34. #define OFFSET_S0      0x8
  35. #define OFFSET_S1      0xc
  36. #define OFFSET_S2      0x10
  37. #define OFFSET_S3      0x14
  38. #define OFFSET_S4      0x18
  39. #define OFFSET_S5      0x1c
  40. #define OFFSET_S6      0x20
  41. #define OFFSET_S7      0x24
  42. #define OFFSET_S8      0x28
  43. #define OFFSET_GP      0x2c
  44.  
  45. #ifdef KERNEL
  46. # define OFFSET_IPL     0x30
  47. #else
  48. # define OFFSET_TLS     0x30
  49.  
  50. # define OFFSET_F20     0x34
  51. # define OFFSET_F21     0x38
  52. # define OFFSET_F22     0x3c
  53. # define OFFSET_F23     0x40
  54. # define OFFSET_F24     0x44
  55. # define OFFSET_F25     0x48
  56. # define OFFSET_F26     0x4c
  57. # define OFFSET_F27     0x50
  58. # define OFFSET_F28     0x54
  59. # define OFFSET_F29     0x58
  60. # define OFFSET_F30     0x5c
  61. #endif /* KERNEL */
  62.  
  63. /* istate_t */
  64. #define EOFFSET_AT     0x0
  65. #define EOFFSET_V0     0x4
  66. #define EOFFSET_V1     0x8
  67. #define EOFFSET_A0     0xc
  68. #define EOFFSET_A1     0x10
  69. #define EOFFSET_A2     0x14
  70. #define EOFFSET_A3     0x18
  71. #define EOFFSET_T0     0x1c
  72. #define EOFFSET_T1     0x20
  73. #define EOFFSET_T2     0x24
  74. #define EOFFSET_T3     0x28
  75. #define EOFFSET_T4     0x2c
  76. #define EOFFSET_T5     0x30
  77. #define EOFFSET_T6     0x34
  78. #define EOFFSET_T7     0x38
  79. #define EOFFSET_S0     0x3c
  80. #define EOFFSET_S1     0x40
  81. #define EOFFSET_S2     0x44
  82. #define EOFFSET_S3     0x48
  83. #define EOFFSET_S4     0x4c
  84. #define EOFFSET_S5     0x50
  85. #define EOFFSET_S6     0x54
  86. #define EOFFSET_S7     0x58
  87. #define EOFFSET_T8     0x5c
  88. #define EOFFSET_T9     0x60
  89. #define EOFFSET_GP     0x64
  90. #define EOFFSET_SP     0x68
  91. #define EOFFSET_S8     0x6c
  92. #define EOFFSET_RA     0x70
  93. #define EOFFSET_LO     0x74
  94. #define EOFFSET_HI     0x78
  95. #define EOFFSET_STATUS 0x7c
  96. #define EOFFSET_EPC    0x80
  97. #define EOFFSET_K1     0x84
  98. #define REGISTER_SPACE 136
  99.  
  100. #ifdef __ASM__
  101.  
  102. #include <arch/asm/regname.h>
  103.  
  104. # ctx: address of the structure with saved context
  105. .macro CONTEXT_SAVE_ARCH_CORE ctx:req
  106.     sw $s0,OFFSET_S0(\ctx)
  107.     sw $s1,OFFSET_S1(\ctx)
  108.     sw $s2,OFFSET_S2(\ctx)
  109.     sw $s3,OFFSET_S3(\ctx)
  110.     sw $s4,OFFSET_S4(\ctx)
  111.     sw $s5,OFFSET_S5(\ctx)
  112.     sw $s6,OFFSET_S6(\ctx)
  113.     sw $s7,OFFSET_S7(\ctx)
  114.     sw $s8,OFFSET_S8(\ctx)
  115.     sw $gp,OFFSET_GP(\ctx)
  116.  
  117. #ifndef KERNEL
  118.     sw $k1,OFFSET_TLS(\ctx)
  119.  
  120. #ifdef CONFIG_FPU
  121.     mfc1 $t0,$20
  122.     sw $t0, OFFSET_F20(\ctx)
  123.  
  124.     mfc1 $t0,$21
  125.     sw $t0, OFFSET_F21(\ctx)
  126.  
  127.     mfc1 $t0,$22
  128.     sw $t0, OFFSET_F22(\ctx)
  129.  
  130.     mfc1 $t0,$23
  131.     sw $t0, OFFSET_F23(\ctx)
  132.  
  133.     mfc1 $t0,$24
  134.     sw $t0, OFFSET_F24(\ctx)
  135.  
  136.     mfc1 $t0,$25
  137.     sw $t0, OFFSET_F25(\ctx)
  138.  
  139.     mfc1 $t0,$26
  140.     sw $t0, OFFSET_F26(\ctx)
  141.  
  142.     mfc1 $t0,$27
  143.     sw $t0, OFFSET_F27(\ctx)
  144.  
  145.     mfc1 $t0,$28
  146.     sw $t0, OFFSET_F28(\ctx)
  147.  
  148.     mfc1 $t0,$29
  149.     sw $t0, OFFSET_F29(\ctx)
  150.    
  151.     mfc1 $t0,$30
  152.     sw $t0, OFFSET_F30(\ctx)
  153. #endif /* CONFIG_FPU */
  154. #endif /* KERNEL */
  155.  
  156.     sw $ra,OFFSET_PC(\ctx)
  157.     sw $sp,OFFSET_SP(\ctx)
  158. .endm
  159.  
  160. # ctx: address of the structure with saved context
  161. .macro CONTEXT_RESTORE_ARCH_CORE ctx:req
  162.     lw $s0,OFFSET_S0(\ctx)
  163.     lw $s1,OFFSET_S1(\ctx)
  164.     lw $s2,OFFSET_S2(\ctx)
  165.     lw $s3,OFFSET_S3(\ctx)
  166.     lw $s4,OFFSET_S4(\ctx)
  167.     lw $s5,OFFSET_S5(\ctx)
  168.     lw $s6,OFFSET_S6(\ctx)
  169.     lw $s7,OFFSET_S7(\ctx)
  170.     lw $s8,OFFSET_S8(\ctx)
  171.     lw $gp,OFFSET_GP(\ctx)
  172. #ifndef KERNEL
  173.     lw $k1,OFFSET_TLS(\ctx)
  174.  
  175. #ifdef CONFIG_FPU
  176.     lw $t0, OFFSET_F20(\ctx)
  177.     mtc1 $t0,$20
  178.  
  179.     lw $t0, OFFSET_F21(\ctx)
  180.     mtc1 $t0,$21
  181.  
  182.     lw $t0, OFFSET_F22(\ctx)
  183.     mtc1 $t0,$22
  184.  
  185.     lw $t0, OFFSET_F23(\ctx)
  186.     mtc1 $t0,$23
  187.  
  188.     lw $t0, OFFSET_F24(\ctx)
  189.     mtc1 $t0,$24
  190.  
  191.     lw $t0, OFFSET_F25(\ctx)
  192.     mtc1 $t0,$25
  193.  
  194.     lw $t0, OFFSET_F26(\ctx)
  195.     mtc1 $t0,$26
  196.  
  197.     lw $t0, OFFSET_F27(\ctx)
  198.     mtc1 $t0,$27
  199.  
  200.     lw $t0, OFFSET_F28(\ctx)
  201.     mtc1 $t0,$28
  202.  
  203.     lw $t0, OFFSET_F29(\ctx)
  204.     mtc1 $t0,$29
  205.  
  206.     lw $t0, OFFSET_F30(\ctx)
  207.     mtc1 $t0,$30
  208. #endif /* CONFIG_FPU */
  209. #endif /* KERNEL */
  210.  
  211.     lw $ra,OFFSET_PC(\ctx)
  212.     lw $sp,OFFSET_SP(\ctx)
  213. .endm
  214.  
  215. #endif
  216.  
  217.  
  218. #endif
  219.