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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 sparc64interrupt
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief This file contains the trap_instruction handler.
  35.  *
  36.  * The trap_instruction trap is used to implement syscalls.
  37.  */
  38.  
  39. #ifndef KERN_sparc64_SYSCALL_TRAP_H_
  40. #define KERN_sparc64_SYSCALL_TRAP_H_
  41.  
  42. #define TT_TRAP_INSTRUCTION(n)      (0x100+(n))
  43. #define TT_TRAP_INSTRUCTION_LAST    TT_TRAP_INSTRUCTION(127)
  44.  
  45. #ifdef __ASM__
  46.  
  47. .macro TRAP_INSTRUCTION n
  48.     mov TT_TRAP_INSTRUCTION(\n), %g2
  49.     sethi %hi(syscall), %g1
  50.     ba trap_instruction_handler
  51.     or %g1, %lo(syscall), %g1
  52.  
  53. .endm
  54.  
  55. #endif /* __ASM__ */
  56.  
  57. #endif
  58.  
  59. /** @}
  60.  */
  61.