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frame.h revision 1.21 
      1 /*	$NetBSD: frame.h,v 1.21 2018/01/24 19:42:30 skrll 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
     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;
     55 	register_t tf_fill; /* fill here so r0 will be 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;
     72 	register_t tf_svc_lr;
     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 #define TRAP_USERMODE(tf)	(((tf)->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
     83 
     84 /*
     85  * Signal frame.  Pushed onto user stack before calling sigcode.
     86  */
     87 #ifdef COMPAT_16
     88 struct sigframe_sigcontext {
     89 	struct	sigcontext sf_sc;
     90 };
     91 #endif
     92 
     93 /* the pointers are use in the trampoline code to locate the ucontext */
     94 struct sigframe_siginfo {
     95 	siginfo_t	sf_si;		/* actual saved siginfo */
     96 	ucontext_t	sf_uc;		/* actual saved ucontext */
     97 };
     98 
     99 #if defined(_KERNEL) || defined(_KMEMUSER)
    100 #ifdef _KERNEL
    101 __BEGIN_DECLS
    102 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
    103 void *getframe(struct lwp *, int, int *);
    104 __END_DECLS
    105 #define lwp_settrapframe(l, tf)		((l)->l_md.md_tf = (tf))
    106 #endif
    107 #define lwp_trapframe(l)		((l)->l_md.md_tf)
    108 #endif /* _KERNEL || _KMEMUSER */
    109 
    110 #endif /* _LOCORE */
    111 
    112 #endif /* _ARM_FRAME_H_ */
    113 
    114 /* End of frame.h */
    115