1/*	$NetBSD: frame.h,v 1.11 2010/03/30 19:27:54 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 */
74struct 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