Home | History | Annotate | Line # | Download | only in include
frame.h revision 1.13 
      1 /*	$NetBSD: frame.h,v 1.13 2003/02/02 20:43:23 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #ifndef	_POWERPC_FRAME_H_
     34 #define	_POWERPC_FRAME_H_
     35 
     36 #include <machine/types.h>
     37 
     38 /*
     39  * We have to save all registers on every trap, because
     40  *	1. user could attach this process every time
     41  *	2. we must be able to restore all user registers in case of fork
     42  * Actually, we do not save the fp registers on trap, since
     43  * these are not used by the kernel. They are saved only when switching
     44  * between processes using the FPU.
     45  *
     46  * Change ordering to cluster together these register_t's.		XXX
     47  */
     48 struct trapframe {
     49 	register_t fixreg[32];
     50 	register_t lr;
     51 	int cr;
     52 	int xer;
     53 	register_t ctr;
     54 	register_t srr0;
     55 	register_t srr1;
     56 	/*
     57 	 * DAR is the OEA name.  On IBM4xx is DAR is really DEAR.
     58 	 */
     59 	register_t dar;		/* dar & dsisr are only filled on a DSI trap */
     60 	int dsisr;
     61 	int exc;
     62 	int tf_xtra[2];
     63 };
     64 #define	TF_VRSAVE	0
     65 #define	TF_MQ		1
     66 #define	TF_ESR		0
     67 #define	TF_PID		1
     68 
     69 #if defined(_KERNEL) || defined(_LKM)
     70 #ifdef _LP64
     71 struct trapframe32 {
     72 	register32_t fixreg[32];
     73 	register32_t lr;
     74 	int cr;
     75 	int xer;
     76 	register32_t ctr;
     77 	register32_t srr0;
     78 	register32_t srr1;
     79 	register32_t dar;		/* dar & dsisr are only filled on a DSI trap */
     80 	int dsisr;
     81 	int exc;
     82 	uint32_t vrsave;
     83 	uint32_t mq;
     84 };
     85 #endif
     86 #endif /* _KERNEL || _LKM */
     87 
     88 /*
     89  * This is to ensure alignment of the stackpointer
     90  */
     91 #define	FRAMELEN	roundup(sizeof(struct trapframe) + 8, CALLFRAMELEN)
     92 #define	trapframe(l)	((struct trapframe *)((char *)(l)->l_addr + USPACE - FRAMELEN + 8))
     93 
     94 struct switchframe {
     95 	register_t sp;
     96 	int fill;
     97 	int user_sr;	/* VSID on IBM4XX */
     98 	int cr;
     99 	register_t fixreg2;
    100 	register_t fixreg[19];		/* R13-R31 */
    101 };
    102 
    103 struct clockframe {
    104 	register_t srr1;
    105 	register_t srr0;
    106 	int pri;
    107 	int depth;
    108 };
    109 
    110 /*
    111  * Call frame for PowerPC used during fork.
    112  */
    113 #define	CALLFRAMELEN	sizeof(struct callframe)
    114 struct callframe {
    115 	register_t sp;
    116 	register_t lr;
    117 	register_t r30;
    118 	register_t r31;
    119 };
    120 
    121 struct saframe {
    122 	register_t r1;		/* stack pointer */
    123 	register_t lr;		/* Callee lr save area */
    124 	register_t fill[2];	/* Pad to multiple of 16 bytes */
    125 };
    126 
    127 #define	IFRAMELEN	roundup(sizeof(struct intrframe), CALLFRAMELEN)
    128 struct intrframe {
    129 	register_t r1;			/*  0 */
    130 	register_t _pad4;		/*  4 */
    131 	/*
    132 	 * The next 4 fields are "clockframe"
    133 	 */
    134 	register_t srr1;		/*  8 */
    135 	register_t srr0;		/* 12 */
    136 	int pri;			/* 16 */
    137 	int intrdepth;			/* 20 */
    138 	register_t pid;			/* 24 */
    139 	register_t ctr;			/* 28 */
    140 	register_t xer;			/* 32 */
    141 	register_t cr;			/* 36 */
    142 	register_t lr;			/* 40 */
    143 	register_t r12;			/* 44 */
    144 	register_t r11;			/* 48 */
    145 	register_t r10;			/* 52 */
    146 	register_t r9;			/* 56 */
    147 	register_t r8;			/* 60 */
    148 	register_t r7;			/* 64 */
    149 	register_t r6;			/* 68 */
    150 	register_t r5;			/* 72 */
    151 	register_t r4;			/* 76 */
    152 	register_t r3;			/* 80 */
    153 	register_t r0;			/* 84 */
    154 };
    155 
    156 #define	SPFRAMELEN	sizeof(struct spillframe)
    157 struct spillframe {
    158 	register_t	r1;		/*  0 */
    159 	register_t	_pad4;		/*  4 */
    160 	register_t	r12;		/*  8 */
    161 	register_t	r11;		/* 12 */
    162 	register_t	r10;		/* 16 */
    163 	register_t	r9;		/* 20 */
    164 	register_t	r8;		/* 24 */
    165 	register_t	r7;		/* 28 */
    166 	register_t	r6;		/* 32 */
    167 	register_t	r5;		/* 36 */
    168 	register_t	r4;		/* 40 */
    169 	register_t	r3;		/* 44 */
    170 	register_t	r0;		/* 48 */
    171 };
    172 
    173 #endif	/* _POWERPC_FRAME_H_ */
    174