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  1. /*
  2.  * Copyright (C) 2003-2004 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 __mips32_CONTEXT_H__
  30. #define __mips32_CONTEXT_H__
  31.  
  32. #define STACK_ITEM_SIZE 4
  33.  
  34. /*
  35.  * Put one item onto the stack to support get_stack_base().
  36.  */
  37. #define SP_DELTA    (0+STACK_ITEM_SIZE)
  38.  
  39.  
  40. #ifndef __ASM__
  41.  
  42. #ifndef __mips32_TYPES_H__
  43. # include <arch/types.h>
  44. #endif
  45.  
  46. /*
  47.  * Only save registers that must be preserved across
  48.  * function calls.
  49.  */
  50. struct context {
  51.     __address sp;
  52.     __address pc;
  53.    
  54.     __u32 s0;
  55.     __u32 s1;
  56.     __u32 s2;
  57.     __u32 s3;
  58.     __u32 s4;
  59.     __u32 s5;
  60.     __u32 s6;
  61.     __u32 s7;
  62.     __u32 s8;
  63.     __u32 gp;
  64.  
  65.     ipl_t ipl;
  66. };
  67.  
  68. #endif /* __ASM__ */
  69.  
  70. #endif
  71.