sys/arch/arm/include/frame.h

   1 /*      $NetBSD: frame.h,v 1.17 2012/08/16 17:35:01 matt 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/ucontext.h>
  48
  49 /*
  50  * Trap frame.  Pushed onto the kernel stack on a trap (synchronous exception).
  51  */
  52
  53 typedef struct trapframe {
  54         register_t tf_spsr; /* Zero on arm26 */
  55         register_t tf_fill; /* fill here so r0 will dword aligned */
  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_ip tf_r12
  78 #define tf_r13 tf_usr_sp
  79 #define tf_r14 tf_usr_lr
  80 #define tf_r15 tf_pc
  81
  82 #ifdef __PROG32
  83 #define TRAP_USERMODE(tf)       (((tf)->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
  84 #elif defined(__PROG26)
  85 #define TRAP_USERMODE(tf)       (((tf)->tf_r15 & R15_MODE) == R15_MODE_USR)
  86 #endif
  87
  88 /*
  89  * Signal frame.  Pushed onto user stack before calling sigcode.
  90  */
  91 #if defined(COMPAT_16) || defined(__minix)
  92 struct sigframe_sigcontext {
  93 #ifdef __minix
  94         struct  sigcontext *sf_scp;     /* Let sigreturn find sigcontext */
  95 #endif
  96         struct  sigcontext sf_sc;
  97 };
  98 #endif
  99
 100
 101 /* the pointers are use in the trampoline code to locate the ucontext */
 102 struct sigframe_siginfo {
 103         siginfo_t       sf_si;          /* actual saved siginfo */
 104         ucontext_t      sf_uc;          /* actual saved ucontext */
 105 };
 106
 107 #ifdef _KERNEL
 108 __BEGIN_DECLS
 109 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
 110 void *getframe(struct lwp *, int, int *);
 111 __END_DECLS
 112 #define lwp_trapframe(l)                ((l)->l_md.md_tf)
 113 #define lwp_settrapframe(l, tf)         ((l)->l_md.md_tf = (tf))
 114 #endif
 115
 116 #endif /* _LOCORE */
 117
 118 #endif /* _ARM_FRAME_H_ */
 119
 120 /* End of frame.h */