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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. #include <align.h>
  43.  
  44. #define TT_CLEAN_WINDOW         0x24
  45. #define TT_SPILL_0_NORMAL       0x80    /* kernel spills */
  46. #define TT_SPILL_1_NORMAL       0x84    /* userspace spills */
  47. #define TT_SPILL_2_NORMAL       0x88    /* spills to userspace window buffer */
  48. #define TT_SPILL_0_OTHER        0xa0    /* spills to userspace window buffer */
  49. #define TT_FILL_0_NORMAL        0xc0    /* kernel fills */
  50. #define TT_FILL_1_NORMAL        0xc4    /* userspace fills */
  51.  
  52. #define REGWIN_HANDLER_SIZE     128
  53.  
  54. #define CLEAN_WINDOW_HANDLER_SIZE   REGWIN_HANDLER_SIZE
  55. #define SPILL_HANDLER_SIZE      REGWIN_HANDLER_SIZE
  56. #define FILL_HANDLER_SIZE       REGWIN_HANDLER_SIZE
  57.  
  58. /* Window Save Area offsets. */
  59. #define L0_OFFSET   0
  60. #define L1_OFFSET   8
  61. #define L2_OFFSET   16
  62. #define L3_OFFSET   24
  63. #define L4_OFFSET   32
  64. #define L5_OFFSET   40
  65. #define L6_OFFSET   48
  66. #define L7_OFFSET   56
  67. #define I0_OFFSET   64
  68. #define I1_OFFSET   72
  69. #define I2_OFFSET   80
  70. #define I3_OFFSET   88
  71. #define I4_OFFSET   96
  72. #define I5_OFFSET   104
  73. #define I6_OFFSET   112
  74. #define I7_OFFSET   120
  75.  
  76. /* Uspace Window Buffer constants. */
  77. #define UWB_SIZE    ((NWINDOWS - 1) * STACK_WINDOW_SAVE_AREA_SIZE)
  78. #define UWB_ALIGNMENT   1024
  79. #define UWB_ASIZE   ALIGN_UP(UWB_SIZE, UWB_ALIGNMENT)
  80.  
  81. #ifdef __ASM__
  82.  
  83. /*
  84.  * Macro used by the nucleus and the primary context 0 during normal and other spills.
  85.  */
  86. .macro SPILL_NORMAL_HANDLER_KERNEL
  87.     stx %l0, [%sp + STACK_BIAS + L0_OFFSET]
  88.     stx %l1, [%sp + STACK_BIAS + L1_OFFSET]
  89.     stx %l2, [%sp + STACK_BIAS + L2_OFFSET]
  90.     stx %l3, [%sp + STACK_BIAS + L3_OFFSET]
  91.     stx %l4, [%sp + STACK_BIAS + L4_OFFSET]
  92.     stx %l5, [%sp + STACK_BIAS + L5_OFFSET]
  93.     stx %l6, [%sp + STACK_BIAS + L6_OFFSET]
  94.     stx %l7, [%sp + STACK_BIAS + L7_OFFSET]
  95.     stx %i0, [%sp + STACK_BIAS + I0_OFFSET]
  96.     stx %i1, [%sp + STACK_BIAS + I1_OFFSET]
  97.     stx %i2, [%sp + STACK_BIAS + I2_OFFSET]
  98.     stx %i3, [%sp + STACK_BIAS + I3_OFFSET]
  99.     stx %i4, [%sp + STACK_BIAS + I4_OFFSET]
  100.     stx %i5, [%sp + STACK_BIAS + I5_OFFSET]
  101.     stx %i6, [%sp + STACK_BIAS + I6_OFFSET]
  102.     stx %i7, [%sp + STACK_BIAS + I7_OFFSET]
  103.     saved
  104.     retry
  105. .endm
  106.  
  107. /*
  108.  * Macro used by the userspace during normal spills.
  109.  */
  110. .macro SPILL_NORMAL_HANDLER_USERSPACE
  111.     wr %g0, ASI_AIUP, %asi
  112.     stxa %l0, [%sp + STACK_BIAS + L0_OFFSET] %asi
  113.     stxa %l1, [%sp + STACK_BIAS + L1_OFFSET] %asi
  114.     stxa %l2, [%sp + STACK_BIAS + L2_OFFSET] %asi
  115.     stxa %l3, [%sp + STACK_BIAS + L3_OFFSET] %asi
  116.     stxa %l4, [%sp + STACK_BIAS + L4_OFFSET] %asi
  117.     stxa %l5, [%sp + STACK_BIAS + L5_OFFSET] %asi
  118.     stxa %l6, [%sp + STACK_BIAS + L6_OFFSET] %asi
  119.     stxa %l7, [%sp + STACK_BIAS + L7_OFFSET] %asi
  120.     stxa %i0, [%sp + STACK_BIAS + I0_OFFSET] %asi
  121.     stxa %i1, [%sp + STACK_BIAS + I1_OFFSET] %asi
  122.     stxa %i2, [%sp + STACK_BIAS + I2_OFFSET] %asi
  123.     stxa %i3, [%sp + STACK_BIAS + I3_OFFSET] %asi
  124.     stxa %i4, [%sp + STACK_BIAS + I4_OFFSET] %asi
  125.     stxa %i5, [%sp + STACK_BIAS + I5_OFFSET] %asi
  126.     stxa %i6, [%sp + STACK_BIAS + I6_OFFSET] %asi
  127.     stxa %i7, [%sp + STACK_BIAS + I7_OFFSET] %asi
  128.     saved
  129.     retry
  130. .endm
  131.  
  132. /*
  133.  * Macro used to spill userspace window to userspace window buffer.
  134.  * It can be either triggered from preemptible_handler doing SAVE
  135.  * at (TL=1) or from normal kernel code doing SAVE when OTHERWIN>0
  136.  * at (TL=0).
  137.  */
  138. .macro SPILL_TO_USPACE_WINDOW_BUFFER
  139.     stx %l0, [%g7 + L0_OFFSET] 
  140.     stx %l1, [%g7 + L1_OFFSET]
  141.     stx %l2, [%g7 + L2_OFFSET]
  142.     stx %l3, [%g7 + L3_OFFSET]
  143.     stx %l4, [%g7 + L4_OFFSET]
  144.     stx %l5, [%g7 + L5_OFFSET]
  145.     stx %l6, [%g7 + L6_OFFSET]
  146.     stx %l7, [%g7 + L7_OFFSET]
  147.     stx %i0, [%g7 + I0_OFFSET]
  148.     stx %i1, [%g7 + I1_OFFSET]
  149.     stx %i2, [%g7 + I2_OFFSET]
  150.     stx %i3, [%g7 + I3_OFFSET]
  151.     stx %i4, [%g7 + I4_OFFSET]
  152.     stx %i5, [%g7 + I5_OFFSET]
  153.     stx %i6, [%g7 + I6_OFFSET]
  154.     stx %i7, [%g7 + I7_OFFSET]
  155.     add %g7, STACK_WINDOW_SAVE_AREA_SIZE, %g7
  156.     saved
  157.     retry
  158. .endm
  159.  
  160.  
  161. /*
  162.  * Macro used by the nucleus and the primary context 0 during normal fills.
  163.  */
  164. .macro FILL_NORMAL_HANDLER_KERNEL
  165.     ldx [%sp + STACK_BIAS + L0_OFFSET], %l0
  166.     ldx [%sp + STACK_BIAS + L1_OFFSET], %l1
  167.     ldx [%sp + STACK_BIAS + L2_OFFSET], %l2
  168.     ldx [%sp + STACK_BIAS + L3_OFFSET], %l3
  169.     ldx [%sp + STACK_BIAS + L4_OFFSET], %l4
  170.     ldx [%sp + STACK_BIAS + L5_OFFSET], %l5
  171.     ldx [%sp + STACK_BIAS + L6_OFFSET], %l6
  172.     ldx [%sp + STACK_BIAS + L7_OFFSET], %l7
  173.     ldx [%sp + STACK_BIAS + I0_OFFSET], %i0
  174.     ldx [%sp + STACK_BIAS + I1_OFFSET], %i1
  175.     ldx [%sp + STACK_BIAS + I2_OFFSET], %i2
  176.     ldx [%sp + STACK_BIAS + I3_OFFSET], %i3
  177.     ldx [%sp + STACK_BIAS + I4_OFFSET], %i4
  178.     ldx [%sp + STACK_BIAS + I5_OFFSET], %i5
  179.     ldx [%sp + STACK_BIAS + I6_OFFSET], %i6
  180.     ldx [%sp + STACK_BIAS + I7_OFFSET], %i7
  181.     restored
  182.     retry
  183. .endm
  184.  
  185. /*
  186.  * Macro used by the userspace during normal fills.
  187.  */
  188. .macro FILL_NORMAL_HANDLER_USERSPACE
  189.     wr %g0, ASI_AIUP, %asi
  190.     ldxa [%sp + STACK_BIAS + L0_OFFSET] %asi, %l0
  191.     ldxa [%sp + STACK_BIAS + L1_OFFSET] %asi, %l1
  192.     ldxa [%sp + STACK_BIAS + L2_OFFSET] %asi, %l2
  193.     ldxa [%sp + STACK_BIAS + L3_OFFSET] %asi, %l3
  194.     ldxa [%sp + STACK_BIAS + L4_OFFSET] %asi, %l4
  195.     ldxa [%sp + STACK_BIAS + L5_OFFSET] %asi, %l5
  196.     ldxa [%sp + STACK_BIAS + L6_OFFSET] %asi, %l6
  197.     ldxa [%sp + STACK_BIAS + L7_OFFSET] %asi, %l7
  198.     ldxa [%sp + STACK_BIAS + I0_OFFSET] %asi, %i0
  199.     ldxa [%sp + STACK_BIAS + I1_OFFSET] %asi, %i1
  200.     ldxa [%sp + STACK_BIAS + I2_OFFSET] %asi, %i2
  201.     ldxa [%sp + STACK_BIAS + I3_OFFSET] %asi, %i3
  202.     ldxa [%sp + STACK_BIAS + I4_OFFSET] %asi, %i4
  203.     ldxa [%sp + STACK_BIAS + I5_OFFSET] %asi, %i5
  204.     ldxa [%sp + STACK_BIAS + I6_OFFSET] %asi, %i6
  205.     ldxa [%sp + STACK_BIAS + I7_OFFSET] %asi, %i7
  206.     restored
  207.     retry
  208. .endm
  209.  
  210. .macro CLEAN_WINDOW_HANDLER
  211.     rdpr %cleanwin, %l0
  212.     add %l0, 1, %l0
  213.     wrpr %l0, 0, %cleanwin
  214.     mov %r0, %l0
  215.     mov %r0, %l1
  216.     mov %r0, %l2
  217.     mov %r0, %l3
  218.     mov %r0, %l4
  219.     mov %r0, %l5
  220.     mov %r0, %l6
  221.     mov %r0, %l7
  222.     mov %r0, %o0
  223.     mov %r0, %o1
  224.     mov %r0, %o2
  225.     mov %r0, %o3
  226.     mov %r0, %o4
  227.     mov %r0, %o5
  228.     mov %r0, %o6
  229.     mov %r0, %o7
  230.     retry
  231. .endm
  232. #endif /* __ASM__ */
  233.  
  234. #endif
  235.  
  236. /** @}
  237.  */
  238.