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