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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. /** @file
  33.  */
  34.  
  35. #ifndef KERN_sparc64_TRAP_TABLE_H_
  36. #define KERN_sparc64_TRAP_TABLE_H_
  37.  
  38. #include <arch/stack.h>
  39.  
  40. #define TRAP_TABLE_ENTRY_COUNT  1024
  41. #define TRAP_TABLE_ENTRY_SIZE   32
  42. #define TRAP_TABLE_SIZE     (TRAP_TABLE_ENTRY_COUNT * TRAP_TABLE_ENTRY_SIZE)
  43.  
  44. #ifndef __ASM__
  45.  
  46. #include <arch/types.h>
  47.  
  48. struct trap_table_entry {
  49.     uint8_t octets[TRAP_TABLE_ENTRY_SIZE];
  50. } __attribute__ ((packed));
  51.  
  52. typedef struct trap_table_entry trap_table_entry_t;
  53.  
  54. extern trap_table_entry_t trap_table[TRAP_TABLE_ENTRY_COUNT];
  55. extern trap_table_entry_t trap_table_save[TRAP_TABLE_ENTRY_COUNT];
  56. #endif /* !__ASM__ */
  57.  
  58. #ifdef __ASM__
  59. .macro SAVE_GLOBALS
  60.     mov %g1, %l1
  61.     mov %g2, %l2
  62.     mov %g3, %l3
  63.     mov %g4, %l4
  64.     mov %g5, %l5
  65.     mov %g6, %l6
  66.     mov %g7, %l7
  67. .endm
  68.  
  69. .macro RESTORE_GLOBALS
  70.     mov %l1, %g1
  71.     mov %l2, %g2
  72.     mov %l3, %g3
  73.     mov %l4, %g4
  74.     mov %l5, %g5
  75.     mov %l6, %g6
  76.     mov %l7, %g7
  77. .endm
  78.  
  79. /*
  80.  * The following needs to be in sync with the definition of the istate
  81.  * structure. The one STACK_ITEM_SIZE is counted for space holding the 7th
  82.  * argument to syscall_handler (i.e. syscall number) and the other
  83.  * STACK_ITEM_SIZE is counted because of the required alignment.
  84.  */
  85. #define PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE    \
  86.     (STACK_WINDOW_SAVE_AREA_SIZE + STACK_ARG_SAVE_AREA_SIZE + \
  87.     (2 * STACK_ITEM_SIZE) + (12 * 8))
  88. #define SAVED_TSTATE    -(1 * 8)
  89. #define SAVED_TPC   -(2 * 8)
  90. #define SAVED_TNPC  -(3 * 8)    /* <-- istate_t begins here */
  91. #define SAVED_Y     -(4 * 8)
  92. #define SAVED_I0    -(5 * 8)
  93. #define SAVED_I1    -(6 * 8)
  94. #define SAVED_I2    -(7 * 8)
  95. #define SAVED_I3    -(8 * 8)
  96. #define SAVED_I4    -(9 * 8)
  97. #define SAVED_I5    -(10 * 8)
  98. #define SAVED_I6    -(11 * 8)
  99. #define SAVED_I7    -(12 * 8)
  100.  
  101. .macro PREEMPTIBLE_HANDLER f
  102.     sethi %hi(\f), %g1
  103.     b preemptible_handler
  104.     or %g1, %lo(\f), %g1
  105. .endm
  106.  
  107. #endif /* __ASM__ */
  108.  
  109. #endif
  110.  
  111. /** @}
  112.  */
  113.