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      1 /*	$NetBSD: frame.h,v 1.12 2011/01/22 19:35:48 skrll Exp $	*/
      2 
      3 /*	$OpenBSD: frame.h,v 1.11 1999/11/25 18:28:06 mickey Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 1999-2004 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  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
     22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     28  * THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 
     32 #ifndef _HPPA_FRAME_H_
     33 #define _HPPA_FRAME_H_
     34 
     35 /*
     36  * Call frame definitions
     37  */
     38 #define	HPPA_FRAME_NARGS	(12)
     39 #define	HPPA_FRAME_MAXARGS	(HPPA_FRAME_NARGS * 4)
     40 #define	HPPA_FRAME_ARG(n)	(-(32 + 4*((n) + 1)))
     41 #define	HPPA_FRAME_CARG(n,sp)	((register_t *)((sp) + HPPA_FRAME_ARG(n)))
     42 #define	HPPA_FRAME_SIZE		(64)
     43 #define	HPPA_FRAME_PSP		(-4)
     44 #define	HPPA_FRAME_EP		(-8)
     45 #define	HPPA_FRAME_CLUP		(-12)
     46 #define	HPPA_FRAME_SL		(-16)
     47 #define	HPPA_FRAME_CRP		(-20)
     48 #define	HPPA_FRAME_ERP		(-24)
     49 #define	HPPA_FRAME_ESR4		(-28)
     50 #define	HPPA_FRAME_EDP		(-32)
     51 #define	HPPA_FRAME_ROUND(x) \
     52 	((((uintptr_t)x) + HPPA_FRAME_SIZE - 1) & ~(HPPA_FRAME_SIZE - 1))
     53 
     54 /*
     55  * Macros to decode processor status word.
     56  */
     57 #define	HPPA_PC_PRIV_MASK    3
     58 #define	HPPA_PC_PRIV_KERN    0
     59 #define	HPPA_PC_PRIV_USER    3
     60 #define	USERMODE(pc)    ((((register_t)pc) & HPPA_PC_PRIV_MASK) != HPPA_PC_PRIV_KERN)
     61 #define	KERNMODE(pc)	(((register_t)pc) & ~HPPA_PC_PRIV_MASK)
     62 
     63 #ifndef __ASSEMBLER__
     64 /*
     65  * the trapframe is divided into two parts:
     66  *	one is saved while we are in the physical mode (beginning of the trap),
     67  *	and should be kept as small as possible, since all the interrupts will
     68  *	be lost during this phase, also it must be 64-bytes aligned, per
     69  *	pa-risc stack conventions, and its dependencies in the code (;
     70  *	the other part is filled out when we are already in the virtual mode,
     71  *	are able to catch interrupts (they are kept pending) and perform
     72  *	other trap activities (like tlb misses).
     73  */
     74 struct trapframe {
     75 	/* the `physical' part of the trapframe */
     76 	u_int	tf_t1;		/* r22 */
     77 	u_int	tf_t2;		/* r21 */
     78 	u_int	tf_sp;		/* r30 */
     79 	u_int	tf_t3;		/* r20 */
     80 	u_int	tf_iisq_head;	/* cr17 */
     81 	u_int	tf_iisq_tail;
     82 	u_int	tf_iioq_head;	/* cr18 */
     83 	u_int	tf_iioq_tail;
     84 	u_int	tf_eiem;	/* cr15 */
     85 	u_int	tf_ipsw;	/* cr22 */
     86 	u_int	tf_sr3;
     87 	u_int	tf_pidr1;	/* cr8 */
     88 	u_int	tf_isr;		/* cr20 */
     89 	u_int	tf_ior;		/* cr21 */
     90 	u_int	tf_iir;		/* cr19 */
     91 	u_int	tf_flags;
     92 
     93 	/* here starts the `virtual' part */
     94 	u_int	tf_sar;		/* cr11 */
     95 	u_int	tf_r1;
     96 	u_int	tf_rp;		/* r2 */
     97 	u_int	tf_r3;		/* frame pointer when -g */
     98 	u_int	tf_r4;
     99 	u_int	tf_r5;
    100 	u_int	tf_r6;
    101 	u_int	tf_r7;
    102 	u_int	tf_r8;
    103 	u_int	tf_r9;
    104 	u_int	tf_r10;
    105 	u_int	tf_r11;
    106 	u_int	tf_r12;
    107 	u_int	tf_r13;
    108 	u_int	tf_r14;
    109 	u_int	tf_r15;
    110 	u_int	tf_r16;
    111 	u_int	tf_r17;
    112 	u_int	tf_r18;
    113 	u_int	tf_t4;		/* r19 */
    114 	u_int	tf_arg3;	/* r23 */
    115 	u_int	tf_arg2;	/* r24 */
    116 	u_int	tf_arg1;	/* r25 */
    117 	u_int	tf_arg0;	/* r26 */
    118 	u_int	tf_dp;		/* r27 */
    119 	u_int	tf_ret0;	/* r28 */
    120 	u_int	tf_ret1;	/* r29 */
    121 	u_int	tf_r31;
    122 	u_int	tf_sr0;
    123 	u_int	tf_sr1;
    124 	u_int	tf_sr2;
    125 	u_int	tf_sr4;
    126 	u_int	tf_sr5;
    127 	u_int	tf_sr6;
    128 	u_int	tf_sr7;
    129 	u_int	tf_pidr2;	/* cr9 */
    130 	u_int	tf_pidr3;	/* cr12 */
    131 	u_int	tf_pidr4;	/* cr13 */
    132 	u_int	tf_rctr;	/* cr0 */
    133 	u_int	tf_ccr;		/* cr10 */
    134 	u_int	tf_eirr;	/* cr23 - DDB */
    135 	u_int	tf_cr24;	/* cr24 - DDB */
    136 	u_int	tf_vtop;	/* cr25 - DDB */
    137 	u_int	tf_cr27;	/*      - DDB */
    138 	u_int	tf_cr28;	/*      - DDB */
    139 	u_int	tf_cr30;	/* fpregs */
    140 
    141 	u_int	tf_pad[2];	/* pad to 256 bytes */
    142 };
    143 
    144 #endif /* !__ASSEMBLER__ */
    145 
    146 #endif /* !_HPPA_FRAME_H_ */
    147