1/* $NetBSD: frame.h,v 1.29 2020/07/06 09:34:17 rin 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
34#ifndef _POWERPC_FRAME_H_
35#define _POWERPC_FRAME_H_
36
37#include <machine/types.h>
38
39#ifdef _KERNEL_OPT
40#include "opt_ppcarch.h"
41#endif
42
43/*
44 * We have to save all registers on every trap, because
45 * 1. user could attach this process every time
46 * 2. we must be able to restore all user registers in case of fork
47 * Actually, we do not save the fp registers on trap, since
48 * these are not used by the kernel. They are saved only when switching
49 * between processes using the FPU.
50 *
51 * Change ordering to cluster together these register_t's. XXX
52 */
53struct reg_sans_pc {
54 __register_t r_fixreg[32];
55 __register_t r_lr;
56 uint32_t r_cr;
57 uint32_t r_xer;
58 __register_t r_ctr;
59};
60
61#ifdef _LP64
62struct reg_sans_pc32 {
63 __register32_t r_fixreg[32];
64 __register32_t r_lr;
65 uint32_t r_cr;
66 uint32_t r_xer;
67 __register32_t r_ctr;
68};
69#endif
70
71struct utrapframe {
72 __register_t fixreg[32];
73 __register_t lr;
74 int cr;
75 int xer;
76 __register_t ctr;
77 __register_t srr0;
78 __register_t srr1;
79 int vrsave;
80 int mq;
81 int spare;
82};
83
84struct clockframe {
85 __register_t cf_srr0;
86 __register_t cf_srr1;
87 int cf_idepth;
88};
89
90#ifdef _LP64
91struct clockframe32 {
92 __register32_t cf_srr0;
93 __register32_t cf_srr1;
94 int cf_idepth;
95};
96#endif
97
98struct trapframe {
99 struct reg_sans_pc tf_ureg;
100 struct clockframe tf_cf;
101 uint32_t tf_exc;
102#if defined(PPC_OEA) || defined(PPC_OEA64) || defined(PPC_OEA64_BRIDGE)
103 __register_t tf_dar;
104 __register_t tf_pad0[2];
105 uint32_t tf_dsisr;
106 uint32_t tf_vrsave;
107 uint32_t tf_mq;
108 uint32_t tf_pad1[1];
109#endif
110#if defined(PPC_BOOKE) || defined(PPC_IBM4XX)
111 __register_t tf_dear;
112 __register_t tf_mcar;
113 __register_t tf_sprg1;
114 uint32_t tf_esr;
115 uint32_t tf_mcsr;
116 uint32_t tf_pid;
117 uint32_t tf_spefscr;
118#endif
119};
120
121#ifdef _LP64
122struct trapframe32 {
123 struct reg_sans_pc32 tf_ureg;
124 struct clockframe32 tf_cf;
125 uint32_t tf_exc;
126#if defined(PPC_OEA) || defined(PPC_OEA64) || defined(PPC_OEA64_BRIDGE)
127 __register32_t tf_dar;
128 __register32_t tf_pad0[2];
129 uint32_t tf_dsisr;
130 uint32_t tf_vrsave;
131 uint32_t tf_mq;
132 uint32_t tf_pad1[1];
133#endif
134#if defined(PPC_BOOKE) || defined(PPC_IBM4XX)
135 __register32_t tf_dear;
136 __register32_t tf_mcar;
137 __register32_t tf_sprg1;
138 uint32_t tf_esr;
139 uint32_t tf_mcsr;
140 uint32_t tf_pid;
141 uint32_t tf_spefscr;
142#endif
143};
144#endif /* _LP64 */
145#define tf_fixreg tf_ureg.r_fixreg
146#define tf_lr tf_ureg.r_lr
147#define tf_cr tf_ureg.r_cr
148#define tf_xer tf_ureg.r_xer
149#define tf_ctr tf_ureg.r_ctr
150#define tf_srr0 tf_cf.cf_srr0
151#define tf_srr1 tf_cf.cf_srr1
152#define tf_idepth tf_cf.cf_idepth
153
154struct ktrapframe {
155 __register_t ktf_sp;
156 __register_t ktf_lr;
157 struct trapframe ktf_tf;
158 __register_t ktf_cframe_lr; /* for DDB */
159};
160
161#if defined(_KERNEL)
162#ifdef _LP64
163struct utrapframe32 {
164 __register32_t fixreg[32];
165 __register32_t lr;
166 int cr;
167 int xer;
168 __register32_t ctr;
169 __register32_t srr0;
170 __register32_t srr1;
171 int vrsave;
172 int mq;
173 int spare;
174};
175#endif
176#endif /* _KERNEL */
177
178/*
179 * This is to ensure alignment of the stackpointer
180 */
181#define FRAMELEN roundup(sizeof(struct ktrapframe), CALLFRAMELEN)
182#define ktrapframe(l) ((struct ktrapframe *)(uvm_lwp_getuarea(l) + USPACE - CALLFRAMELEN - FRAMELEN))
183#define trapframe(l) (&(ktrapframe(l)->ktf_tf))
184
185#define SFRAMELEN roundup(sizeof(struct switchframe), CALLFRAMELEN)
186struct switchframe {
187 __register_t sf_sp;
188 __register_t sf_lr;
189 __register_t sf_user_sr; /* VSID on IBM4XX */
190 __register_t sf_cr; /* why? CR is volatile. */
191 __register_t sf_fixreg2;
192 __register_t sf_fixreg[19]; /* R13-R31 */
193};
194
195/*
196 * Call frame for PowerPC used during fork.
197 */
198#define CALLFRAMELEN sizeof(struct callframe)
199struct callframe {
200 __register_t cf_sp;
201 __register_t cf_lr;
202 __register_t cf_r30;
203 __register_t cf_r31;
204};
205
206#endif /* _POWERPC_FRAME_H_ */