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frame.h revision 1.7 
      1 /*	$NetBSD: frame.h,v 1.7 2007/12/22 14:06:47 skrll Exp $	*/
      2 
      3 /*	$OpenBSD: frame.h,v 1.11 1999/11/25 18:28:06 mickey Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 1999 Michael Shalayeff
      7  * All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed by Michael Shalayeff.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
     27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     29  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     31  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     32  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     33  * THE POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 
     37 #ifndef _HPPA_FRAME_H_
     38 #define _HPPA_FRAME_H_
     39 
     40 /*
     41  * Call frame definitions
     42  */
     43 #define	HPPA_FRAME_NARGS	(12)
     44 #define	HPPA_FRAME_MAXARGS	(HPPA_FRAME_NARGS * 4)
     45 #define	HPPA_FRAME_ARG(n)	(-(32 + 4*((n) + 1)))
     46 #define	HPPA_FRAME_CARG(n,sp)	((register_t *)((sp) + HPPA_FRAME_ARG(n)))
     47 #define	HPPA_FRAME_SIZE		(64)
     48 #define	HPPA_FRAME_PSP		(-4)
     49 #define	HPPA_FRAME_EP		(-8)
     50 #define	HPPA_FRAME_CLUP		(-12)
     51 #define	HPPA_FRAME_SL		(-16)
     52 #define	HPPA_FRAME_CRP		(-20)
     53 #define	HPPA_FRAME_ERP		(-24)
     54 #define	HPPA_FRAME_ESR4		(-28)
     55 #define	HPPA_FRAME_EDP		(-32)
     56 #define	HPPA_FRAME_ROUND(x) \
     57 	((((uintptr_t)x) + HPPA_FRAME_SIZE - 1) & ~(HPPA_FRAME_SIZE - 1))
     58 
     59 /*
     60  * Macros to decode processor status word.
     61  */
     62 #define	HPPA_PC_PRIV_MASK    3
     63 #define	HPPA_PC_PRIV_KERN    0
     64 #define	HPPA_PC_PRIV_USER    3
     65 #define	USERMODE(pc)    ((((register_t)pc) & HPPA_PC_PRIV_MASK) != HPPA_PC_PRIV_KERN)
     66 #define	KERNMODE(pc)	(((register_t)pc) & ~HPPA_PC_PRIV_MASK)
     67 
     68 #ifndef __ASSEMBLER__
     69 /*
     70  * the trapframe is divided into two parts:
     71  *	one is saved while we are in the physical mode (beginning of the trap),
     72  *	and should be kept as small as possible, since all the interrupts will
     73  *	be lost during this phase, also it must be 64-bytes aligned, per
     74  *	pa-risc stack conventions, and its dependencies in the code (;
     75  *	the other part is filled out when we are already in the virtual mode,
     76  *	are able to catch interrupts (they are kept pending) and perform
     77  *	other trap activities (like tlb misses).
     78  */
     79 struct trapframe {
     80 	/* the `physical' part of the trapframe */
     81 	u_int	tf_t1;		/* r22 */
     82 	u_int	tf_t2;		/* r21 */
     83 	u_int	tf_sp;		/* r30 */
     84 	u_int	tf_t3;		/* r20 */
     85 	u_int	tf_iisq_head;	/* cr17 */
     86 	u_int	tf_iisq_tail;
     87 	u_int	tf_iioq_head;	/* cr18 */
     88 	u_int	tf_iioq_tail;
     89 	u_int	tf_eiem;	/* cr15 */
     90 	u_int	tf_ipsw;	/* cr22 */
     91 	u_int	tf_sr3;
     92 	u_int	tf_pidr1;	/* cr8 */
     93 	u_int	tf_isr;		/* cr20 */
     94 	u_int	tf_ior;		/* cr21 */
     95 	u_int	tf_iir;		/* cr19 */
     96 	u_int	tf_flags;
     97 
     98 	/* here starts the `virtual' part */
     99 	u_int	tf_sar;		/* cr11 */
    100 	u_int	tf_r1;
    101 	u_int	tf_rp;          /* r2 */
    102 	u_int	tf_r3;          /* frame pointer when -g */
    103 	u_int	tf_r4;
    104 	u_int	tf_r5;
    105 	u_int	tf_r6;
    106 	u_int	tf_r7;
    107 	u_int	tf_r8;
    108 	u_int	tf_r9;
    109 	u_int	tf_r10;
    110 	u_int	tf_r11;
    111 	u_int	tf_r12;
    112 	u_int	tf_r13;
    113 	u_int	tf_r14;
    114 	u_int	tf_r15;
    115 	u_int	tf_r16;
    116 	u_int	tf_r17;
    117 	u_int	tf_r18;
    118 	u_int	tf_t4;		/* r19 */
    119 	u_int	tf_arg3;	/* r23 */
    120 	u_int	tf_arg2;	/* r24 */
    121 	u_int	tf_arg1;	/* r25 */
    122 	u_int	tf_arg0;	/* r26 */
    123 	u_int	tf_dp;		/* r27 */
    124 	u_int	tf_ret0;	/* r28 */
    125 	u_int	tf_ret1;	/* r29 */
    126 	u_int	tf_r31;
    127 	u_int	tf_sr0;
    128 	u_int	tf_sr1;
    129 	u_int	tf_sr2;
    130 	u_int	tf_sr4;
    131 	u_int	tf_sr5;
    132 	u_int	tf_sr6;
    133 	u_int	tf_sr7;
    134 	u_int	tf_pidr2;	/* cr9 */
    135 	u_int	tf_pidr3;	/* cr12 */
    136 	u_int	tf_pidr4;	/* cr13 */
    137 	u_int	tf_rctr;	/* cr0 */
    138 	u_int	tf_ccr;		/* cr10 */
    139 	u_int	tf_eirr;	/* cr23 - DDB */
    140 	u_int	tf_hptm;	/* cr24 - DDB */
    141 	u_int	tf_vtop;	/* cr25 - DDB */
    142 	u_int	tf_cr28;	/*      - DDB */
    143 	u_int	tf_cr30;	/* uaddr */
    144 
    145 	u_int	tf_pad[3];	/* pad to 256 bytes */
    146 };
    147 
    148 #endif /* !__ASSEMBLER__ */
    149 
    150 #endif /* !_HPPA_FRAME_H_ */
    151