kernel/arch/mips32/include/context.h

   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 /** @addtogroup mips32
  30  * @{
  31  */
  32 /** @file
  33  */
  34
  35 #ifndef KERN_mips32_CONTEXT_H_
  36 #define KERN_mips32_CONTEXT_H_
  37
  38 #include <align.h>
  39 #include <arch/stack.h>
  40
  41 /*
  42  * Put one item onto the stack to support get_stack_base() and align it up.
  43  */
  44 #define SP_DELTA        (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
  45
  46
  47 #ifndef __ASM__
  48
  49 #include <arch/types.h>
  50
  51 /*
  52  * Only save registers that must be preserved across
  53  * function calls.
  54  */
  55 struct context {
  56         uintptr_t sp;
  57         uintptr_t pc;
  58
  59         uint32_t s0;
  60         uint32_t s1;
  61         uint32_t s2;
  62         uint32_t s3;
  63         uint32_t s4;
  64         uint32_t s5;
  65         uint32_t s6;
  66         uint32_t s7;
  67         uint32_t s8;
  68         uint32_t gp;
  69
  70         ipl_t ipl;
  71 };
  72
  73 #endif /* __ASM__ */
  74
  75 #endif
  76
  77 /** @}
  78  */