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  1. /*
  2.  * Copyright (C) 2006 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 sparc64   
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. /**
  36.  * This file contains fast MMU trap handlers.
  37.  */
  38.  
  39. #ifndef __sparc64_MMU_TRAP_H__
  40. #define __sparc64_MMU_TRAP_H__
  41.  
  42. #include <arch/stack.h>
  43.  
  44. #define TT_FAST_INSTRUCTION_ACCESS_MMU_MISS 0x64
  45. #define TT_FAST_DATA_ACCESS_MMU_MISS        0x68
  46. #define TT_FAST_DATA_ACCESS_PROTECTION      0x6c
  47.  
  48. #define FAST_MMU_HANDLER_SIZE           128
  49.  
  50. #ifdef __ASM__
  51. .macro FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER
  52.     save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
  53.     call fast_instruction_access_mmu_miss
  54.     nop
  55.     restore
  56.     retry  
  57. .endm
  58.  
  59. .macro FAST_DATA_ACCESS_MMU_MISS_HANDLER
  60.     save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
  61.     call fast_data_access_mmu_miss
  62.     nop
  63.     restore
  64.     retry
  65. .endm
  66.  
  67. .macro FAST_DATA_ACCESS_PROTECTION_HANDLER
  68.     save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
  69.     call fast_data_access_protection
  70.     nop
  71.     restore
  72.     retry
  73. .endm
  74. #endif /* __ASM__ */
  75.  
  76. #endif
  77.  
  78.  /** @}
  79.  */
  80.  
  81.