sys/arch/acorn26/include/frame.h

   1 /*      $NetBSD: frame.h,v 1.3 2005/12/11 12:16:04 christos Exp $       */
   2
   3 /*
   4  * Copyright (c) 1999 Ben Harris.
   5  * Copyright (c) 1994-1997 Mark Brinicombe.
   6  * Copyright (c) 1994 Brini.
   7  * All rights reserved.
   8  *
   9  * This code is derived from software written for Brini by Mark Brinicombe
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by Brini.
  22  * 4. The name of the company nor the name of the author may be used to
  23  *    endorse or promote products derived from this software without specific
  24  *    prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  27  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  28  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  29  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  30  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  31  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  32  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38 /*
  39  * frame.h - Stack frames structures
  40  */
  41
  42 #ifndef _ARM26_FRAME_H_
  43 #define _ARM26_FRAME_H_
  44
  45 #include <arm/frame.h>
  46
  47 #ifndef _LOCORE
  48
  49 #include <arm/armreg.h>
  50
  51 /*
  52  * System stack frames.
  53  */
  54
  55 /*
  56  * irqframes just contain registers that APCS specifies the callee
  57  * need not preserve.
  58  */
  59 typedef struct irqframe {
  60         union {
  61                 struct {
  62                         register_t if_r0;
  63                         register_t if_r1;
  64                         register_t if_r2;
  65                         register_t if_r3;
  66                         register_t if_r12;
  67                         register_t if_r14;
  68                 } svc;
  69                 struct {
  70                         register_t if_r0;
  71                         register_t if_r1;
  72                         register_t if_r2;
  73                         register_t if_r3;
  74                         register_t if_r11;
  75                         register_t if_r12;
  76                 } usr;
  77         } if_mode;
  78         register_t if_r15; /* Must be fixed so we know which branch to use */
  79 } irqframe_t;
  80
  81 struct clockframe {
  82         struct irqframe cf_if;
  83 };
  84
  85 /*
  86  * Switch frame
  87  */
  88
  89 struct switchframe {
  90         register_t      sf_r4;  /* Callee-saved registers */
  91         register_t      sf_r5;
  92         register_t      sf_r6;
  93         register_t      sf_r7;
  94         register_t      sf_r8;
  95         register_t      sf_r9;
  96         register_t      sf_r10;
  97         register_t      sf_r11; /* Frame pointer */
  98         register_t      sf_r13; /* Stack pointer */
  99         register_t      sf_pc;  /* Return address */
 100 };
 101
 102 /*
 103  * Floating-point frame.  Stores the state of the FPU.
 104  */
 105
 106 struct fpframe {
 107         register_t      ff_fpsr;
 108         register_t      ff_regs[8*3];
 109 };
 110
 111 #endif /* _LOCORE */
 112
 113 #endif /* _ARM26_FRAME_H_ */
 114
 115 /* End of frame.h */