StdLib/Include/Arm/machine/frame.h

   1 /*      $NetBSD: frame.h,v 1.8 2005/12/11 12:16:47 christos Exp $       */
   2
   3 /*
   4  * Copyright (c) 1994-1997 Mark Brinicombe.
   5  * Copyright (c) 1994 Brini.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software written for Brini by Mark Brinicombe
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by Brini.
  21  * 4. The name of the company nor the name of the author may be used to
  22  *    endorse or promote products derived from this software without specific
  23  *    prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37 /*
  38  * arm/frame.h - Stack frames structures common to arm26 and arm32
  39  */
  40
  41 #ifndef _ARM_FRAME_H_
  42 #define _ARM_FRAME_H_
  43
  44 #ifndef _LOCORE
  45
  46 #include <sys/signal.h>
  47 #include <sys/sa.h>
  48 #include <sys/ucontext.h>
  49
  50 /*
  51  * Trap frame.  Pushed onto the kernel stack on a trap (synchronous exception).
  52  */
  53
  54 typedef struct trapframe {
  55         register_t tf_spsr; /* Zero on arm26 */
  56         register_t tf_r0;
  57         register_t tf_r1;
  58         register_t tf_r2;
  59         register_t tf_r3;
  60         register_t tf_r4;
  61         register_t tf_r5;
  62         register_t tf_r6;
  63         register_t tf_r7;
  64         register_t tf_r8;
  65         register_t tf_r9;
  66         register_t tf_r10;
  67         register_t tf_r11;
  68         register_t tf_r12;
  69         register_t tf_usr_sp;
  70         register_t tf_usr_lr;
  71         register_t tf_svc_sp; /* Not used on arm26 */
  72         register_t tf_svc_lr; /* Not used on arm26 */
  73         register_t tf_pc;
  74 } trapframe_t;
  75
  76 /* Register numbers */
  77 #define tf_r13 tf_usr_sp
  78 #define tf_r14 tf_usr_lr
  79 #define tf_r15 tf_pc
  80
  81 /*
  82  * Signal frame.  Pushed onto user stack before calling sigcode.
  83  */
  84 #ifdef COMPAT_16
  85 struct sigframe_sigcontext {
  86         struct  sigcontext sf_sc;
  87 };
  88 #endif
  89
  90 /* the pointers are use in the trampoline code to locate the ucontext */
  91 struct sigframe_siginfo {
  92         siginfo_t       sf_si;          /* actual saved siginfo */
  93         ucontext_t      sf_uc;          /* actual saved ucontext */
  94 };
  95
  96 /*
  97  * Scheduler activations upcall frame.  Pushed onto user stack before
  98  * calling an SA upcall.
  99  */
 100
 101 struct saframe {
 102 #if 0 /* in registers on entry to upcall */
 103         int             sa_type;
 104         struct sa_t **  sa_sas;
 105         int             sa_events;
 106         int             sa_interrupted;
 107 #endif
 108         void *          sa_arg;
 109 };
 110
 111 #ifdef _KERNEL
 112 __BEGIN_DECLS
 113 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
 114 void *getframe(struct lwp *, int, int *);
 115 __END_DECLS
 116 #define process_frame(l) ((l)->l_addr->u_pcb.pcb_tf)
 117 #endif
 118
 119 #endif /* _LOCORE */
 120
 121 #endif /* _ARM_FRAME_H_ */
 122
 123 /* End of frame.h */