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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. /** @addtogroup sparc64interrupt
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief This file contains register window trap handlers.
  35.  */
  36.  
  37. #ifndef KERN_sparc64_REGWIN_H_
  38. #define KERN_sparc64_REGWIN_H_
  39.  
  40. #include <arch/stack.h>
  41. #include <arch/arch.h>
  42.  
  43. #define TT_CLEAN_WINDOW         0x24
  44. #define TT_SPILL_0_NORMAL       0x80    /* kernel spills */
  45. #define TT_SPILL_1_NORMAL       0x84    /* userspace spills */
  46. #define TT_SPILL_2_NORMAL       0x88    /* spills to userspace window buffer */
  47. #define TT_SPILL_0_OTHER        0xa0    /* spills to userspace window buffer */
  48. #define TT_FILL_0_NORMAL        0xc0    /* kernel fills */
  49. #define TT_FILL_1_NORMAL        0xc4    /* userspace fills */
  50.  
  51. #define REGWIN_HANDLER_SIZE     128
  52.  
  53. #define CLEAN_WINDOW_HANDLER_SIZE   REGWIN_HANDLER_SIZE
  54. #define SPILL_HANDLER_SIZE      REGWIN_HANDLER_SIZE
  55. #define FILL_HANDLER_SIZE       REGWIN_HANDLER_SIZE
  56.  
  57. /* Window Save Area offsets. */
  58. #define L0_OFFSET   0
  59. #define L1_OFFSET   8
  60. #define L2_OFFSET   16
  61. #define L3_OFFSET   24
  62. #define L4_OFFSET   32
  63. #define L5_OFFSET   40
  64. #define L6_OFFSET   48
  65. #define L7_OFFSET   56
  66. #define I0_OFFSET   64
  67. #define I1_OFFSET   72
  68. #define I2_OFFSET   80
  69. #define I3_OFFSET   88
  70. #define I4_OFFSET   96
  71. #define I5_OFFSET   104
  72. #define I6_OFFSET   112
  73. #define I7_OFFSET   120
  74.  
  75. #ifdef __ASM__
  76.  
  77. /*
  78.  * Macro used by the nucleus and the primary context 0 during normal and other spills.
  79.  */
  80. .macro SPILL_NORMAL_HANDLER_KERNEL
  81.     stx %l0, [%sp + STACK_BIAS + L0_OFFSET]
  82.     stx %l1, [%sp + STACK_BIAS + L1_OFFSET]
  83.     stx %l2, [%sp + STACK_BIAS + L2_OFFSET]
  84.     stx %l3, [%sp + STACK_BIAS + L3_OFFSET]
  85.     stx %l4, [%sp + STACK_BIAS + L4_OFFSET]
  86.     stx %l5, [%sp + STACK_BIAS + L5_OFFSET]
  87.     stx %l6, [%sp + STACK_BIAS + L6_OFFSET]
  88.     stx %l7, [%sp + STACK_BIAS + L7_OFFSET]
  89.     stx %i0, [%sp + STACK_BIAS + I0_OFFSET]
  90.     stx %i1, [%sp + STACK_BIAS + I1_OFFSET]
  91.     stx %i2, [%sp + STACK_BIAS + I2_OFFSET]
  92.     stx %i3, [%sp + STACK_BIAS + I3_OFFSET]
  93.     stx %i4, [%sp + STACK_BIAS + I4_OFFSET]
  94.     stx %i5, [%sp + STACK_BIAS + I5_OFFSET]
  95.     stx %i6, [%sp + STACK_BIAS + I6_OFFSET]
  96.     stx %i7, [%sp + STACK_BIAS + I7_OFFSET]
  97.     saved
  98.     retry
  99. .endm
  100.  
  101. /*
  102.  * Macro used by the userspace during normal spills.
  103.  */
  104. .macro SPILL_NORMAL_HANDLER_USERSPACE
  105.     wr %g0, ASI_AIUP, %asi
  106.     stxa %l0, [%sp + STACK_BIAS + L0_OFFSET] %asi
  107.     stxa %l1, [%sp + STACK_BIAS + L1_OFFSET] %asi
  108.     stxa %l2, [%sp + STACK_BIAS + L2_OFFSET] %asi
  109.     stxa %l3, [%sp + STACK_BIAS + L3_OFFSET] %asi
  110.     stxa %l4, [%sp + STACK_BIAS + L4_OFFSET] %asi
  111.     stxa %l5, [%sp + STACK_BIAS + L5_OFFSET] %asi
  112.     stxa %l6, [%sp + STACK_BIAS + L6_OFFSET] %asi
  113.     stxa %l7, [%sp + STACK_BIAS + L7_OFFSET] %asi
  114.     stxa %i0, [%sp + STACK_BIAS + I0_OFFSET] %asi
  115.     stxa %i1, [%sp + STACK_BIAS + I1_OFFSET] %asi
  116.     stxa %i2, [%sp + STACK_BIAS + I2_OFFSET] %asi
  117.     stxa %i3, [%sp + STACK_BIAS + I3_OFFSET] %asi
  118.     stxa %i4, [%sp + STACK_BIAS + I4_OFFSET] %asi
  119.     stxa %i5, [%sp + STACK_BIAS + I5_OFFSET] %asi
  120.     stxa %i6, [%sp + STACK_BIAS + I6_OFFSET] %asi
  121.     stxa %i7, [%sp + STACK_BIAS + I7_OFFSET] %asi
  122.     saved
  123.     retry
  124. .endm
  125.  
  126. /*
  127.  * Macro used to spill userspace window to userspace window buffer.
  128.  * It can be either triggered from preemptible_handler doing SAVE
  129.  * at (TL=1) or from normal kernel code doing SAVE when OTHERWIN>0
  130.  * at (TL=0).
  131.  */
  132. .macro SPILL_TO_USPACE_WINDOW_BUFFER
  133.     stx %l0, [%g7 + L0_OFFSET] 
  134.     stx %l1, [%g7 + L1_OFFSET]
  135.     stx %l2, [%g7 + L2_OFFSET]
  136.     stx %l3, [%g7 + L3_OFFSET]
  137.     stx %l4, [%g7 + L4_OFFSET]
  138.     stx %l5, [%g7 + L5_OFFSET]
  139.     stx %l6, [%g7 + L6_OFFSET]
  140.     stx %l7, [%g7 + L7_OFFSET]
  141.     stx %i0, [%g7 + I0_OFFSET]
  142.     stx %i1, [%g7 + I1_OFFSET]
  143.     stx %i2, [%g7 + I2_OFFSET]
  144.     stx %i3, [%g7 + I3_OFFSET]
  145.     stx %i4, [%g7 + I4_OFFSET]
  146.     stx %i5, [%g7 + I5_OFFSET]
  147.     stx %i6, [%g7 + I6_OFFSET]
  148.     stx %i7, [%g7 + I7_OFFSET]
  149.     add %g7, STACK_WINDOW_SAVE_AREA_SIZE, %g7
  150.     saved
  151.     retry
  152. .endm
  153.  
  154.  
  155. /*
  156.  * Macro used by the nucleus and the primary context 0 during normal fills.
  157.  */
  158. .macro FILL_NORMAL_HANDLER_KERNEL
  159.     ldx [%sp + STACK_BIAS + L0_OFFSET], %l0
  160.     ldx [%sp + STACK_BIAS + L1_OFFSET], %l1
  161.     ldx [%sp + STACK_BIAS + L2_OFFSET], %l2
  162.     ldx [%sp + STACK_BIAS + L3_OFFSET], %l3
  163.     ldx [%sp + STACK_BIAS + L4_OFFSET], %l4
  164.     ldx [%sp + STACK_BIAS + L5_OFFSET], %l5
  165.     ldx [%sp + STACK_BIAS + L6_OFFSET], %l6
  166.     ldx [%sp + STACK_BIAS + L7_OFFSET], %l7
  167.     ldx [%sp + STACK_BIAS + I0_OFFSET], %i0
  168.     ldx [%sp + STACK_BIAS + I1_OFFSET], %i1
  169.     ldx [%sp + STACK_BIAS + I2_OFFSET], %i2
  170.     ldx [%sp + STACK_BIAS + I3_OFFSET], %i3
  171.     ldx [%sp + STACK_BIAS + I4_OFFSET], %i4
  172.     ldx [%sp + STACK_BIAS + I5_OFFSET], %i5
  173.     ldx [%sp + STACK_BIAS + I6_OFFSET], %i6
  174.     ldx [%sp + STACK_BIAS + I7_OFFSET], %i7
  175.     restored
  176.     retry
  177. .endm
  178.  
  179. /*
  180.  * Macro used by the userspace during normal fills.
  181.  */
  182. .macro FILL_NORMAL_HANDLER_USERSPACE
  183.     wr %g0, ASI_AIUP, %asi
  184.     ldxa [%sp + STACK_BIAS + L0_OFFSET] %asi, %l0
  185.     ldxa [%sp + STACK_BIAS + L1_OFFSET] %asi, %l1
  186.     ldxa [%sp + STACK_BIAS + L2_OFFSET] %asi, %l2
  187.     ldxa [%sp + STACK_BIAS + L3_OFFSET] %asi, %l3
  188.     ldxa [%sp + STACK_BIAS + L4_OFFSET] %asi, %l4
  189.     ldxa [%sp + STACK_BIAS + L5_OFFSET] %asi, %l5
  190.     ldxa [%sp + STACK_BIAS + L6_OFFSET] %asi, %l6
  191.     ldxa [%sp + STACK_BIAS + L7_OFFSET] %asi, %l7
  192.     ldxa [%sp + STACK_BIAS + I0_OFFSET] %asi, %i0
  193.     ldxa [%sp + STACK_BIAS + I1_OFFSET] %asi, %i1
  194.     ldxa [%sp + STACK_BIAS + I2_OFFSET] %asi, %i2
  195.     ldxa [%sp + STACK_BIAS + I3_OFFSET] %asi, %i3
  196.     ldxa [%sp + STACK_BIAS + I4_OFFSET] %asi, %i4
  197.     ldxa [%sp + STACK_BIAS + I5_OFFSET] %asi, %i5
  198.     ldxa [%sp + STACK_BIAS + I6_OFFSET] %asi, %i6
  199.     ldxa [%sp + STACK_BIAS + I7_OFFSET] %asi, %i7
  200.     restored
  201.     retry
  202. .endm
  203.  
  204. .macro CLEAN_WINDOW_HANDLER
  205.     rdpr %cleanwin, %l0
  206.     add %l0, 1, %l0
  207.     wrpr %l0, 0, %cleanwin
  208.     mov %r0, %l0
  209.     mov %r0, %l1
  210.     mov %r0, %l2
  211.     mov %r0, %l3
  212.     mov %r0, %l4
  213.     mov %r0, %l5
  214.     mov %r0, %l6
  215.     mov %r0, %l7
  216.     mov %r0, %o0
  217.     mov %r0, %o1
  218.     mov %r0, %o2
  219.     mov %r0, %o3
  220.     mov %r0, %o4
  221.     mov %r0, %o5
  222.     mov %r0, %o6
  223.     mov %r0, %o7
  224.     retry
  225. .endm
  226. #endif /* __ASM__ */
  227.  
  228. #endif
  229.  
  230. /** @}
  231.  */
  232.