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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. #ifndef __sparc64_TRAP_TABLE_H__
  30. #define __sparc64_TRAP_TABLE_H__
  31.  
  32. #ifndef __ASM__
  33. #include <arch/types.h>
  34. #endif /* __ASM__ */
  35.  
  36. #include <arch/stack.h>
  37.  
  38. #define TRAP_TABLE_ENTRY_COUNT  1024
  39. #define TRAP_TABLE_ENTRY_SIZE   32
  40. #define TRAP_TABLE_SIZE     (TRAP_TABLE_ENTRY_COUNT*TRAP_TABLE_ENTRY_SIZE)
  41.  
  42. #ifndef __ASM__
  43. struct trap_table_entry {
  44.     __u8 octets[TRAP_TABLE_ENTRY_SIZE];
  45. } __attribute__ ((packed));
  46.  
  47. typedef struct trap_table_entry trap_table_entry_t;
  48.  
  49. extern trap_table_entry_t trap_table[TRAP_TABLE_ENTRY_COUNT];
  50. extern trap_table_entry_t trap_table_save[TRAP_TABLE_ENTRY_COUNT];
  51. #endif /* !__ASM__ */
  52.  
  53. #ifdef __ASM__
  54. .macro SAVE_GLOBALS
  55.     mov %g1, %l1
  56.     mov %g2, %l2
  57.     mov %g3, %l3
  58.     mov %g4, %l4
  59.     mov %g5, %l5
  60.     mov %g6, %l6
  61.     mov %g7, %l7
  62. .endm
  63.  
  64. .macro RESTORE_GLOBALS
  65.     mov %l1, %g1
  66.     mov %l2, %g2
  67.     mov %l3, %g3
  68.     mov %l4, %g4
  69.     mov %l5, %g5
  70.     mov %l6, %g6
  71.     mov %l7, %g7
  72. .endm
  73.  
  74. #define PREEMPTIBLE_HANDLER_STACK_FRAME_SIZE    (STACK_WINDOW_SAVE_AREA_SIZE+(4*8))
  75. #define SAVED_TSTATE    -(1*8)
  76. #define SAVED_TPC   -(2*8)
  77. #define SAVED_TNPC  -(3*8)
  78. #define SAVED_PSTATE    -(4*8)
  79.  
  80. .macro PREEMPTIBLE_HANDLER f
  81.     set \f, %l0
  82.     b preemptible_handler
  83.     nop
  84. .endm
  85.  
  86. .macro SIMPLE_HANDLER f
  87.     call \f
  88.     nop
  89. .endm
  90. #endif /* __ASM__ */
  91.  
  92. #endif
  93.