1/* $NetBSD: cpuframe.h,v 1.10 2023/09/26 14:33:55 tsutsui Exp $ */
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1982, 1990, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah $Hdr: frame.h 1.8 92/12/20$
37 *
38 * @(#)frame.h 8.1 (Berkeley) 6/10/93
39 */
40
41#ifndef _M68K_CPUFRAME_H_
42#define _M68K_CPUFRAME_H_
43
44struct frame {
45 struct trapframe {
46 int tf_regs[16];
47 short tf_pad;
48 short tf_stackadj;
49 u_short tf_sr;
50 u_int tf_pc __packed;
51 u_short /* BITFIELDTYPE */ tf_format:4,
52 /* BITFIELDTYPE */ tf_vector:12;
53 } F_t;
54 union F_u {
55 struct fmt2 {
56 u_int f_iaddr;
57 } F_fmt2;
58
59 struct fmt3 {
60 u_int f_ea;
61 } F_fmt3;
62
63 struct fmt4 {
64 u_int f_fa;
65 u_int f_fslw;
66 /* for 060FP type 4 FP disabled frames: */
67#define f_fea f_fa
68#define f_pcfi f_fslw
69 } F_fmt4;
70
71 struct fmt7 {
72 u_int f_ea;
73 u_short f_ssw;
74 u_short f_wb3s, f_wb2s, f_wb1s;
75 u_int f_fa;
76 u_int f_wb3a, f_wb3d;
77 u_int f_wb2a, f_wb2d;
78 u_int f_wb1a, f_wb1d;
79#define f_pd0 f_wb1d
80 u_int f_pd1, f_pd2, f_pd3;
81 } F_fmt7;
82
83 struct fmt8 {
84 u_short f_ssw;
85 u_int f_accaddr;
86 u_short f_ir0;
87 u_short f_dob;
88 u_short f_ir1;
89 u_short f_dib;
90 u_short f_ir2;
91 u_short f_irc;
92 u_short f_maskpc;
93 u_short f_iregs[15];
94 } __attribute__((packed)) F_fmt8;
95
96 struct fmt9 {
97 u_int f_iaddr;
98 u_short f_iregs[4];
99 } F_fmt9;
100
101 struct fmtA {
102 u_short f_ir0;
103 u_short f_ssw;
104 u_short f_ipsc;
105 u_short f_ipsb;
106 u_int f_dcfa;
107 u_short f_ir1, f_ir2;
108 u_int f_dob;
109 u_short f_ir3, f_ir4;
110 } F_fmtA;
111
112 struct fmtB {
113 u_short f_ir0;
114 u_short f_ssw;
115 u_short f_ipsc;
116 u_short f_ipsb;
117 u_int f_dcfa;
118 u_short f_ir1, f_ir2;
119 u_int f_dob;
120 u_short f_ir3, f_ir4;
121 u_short f_ir5, f_ir6;
122 u_int f_sba;
123 u_short f_ir7, f_ir8;
124 u_int f_dib;
125 u_short f_iregs[22];
126 } F_fmtB;
127 } F_u;
128};
129
130#define f_regs F_t.tf_regs
131#define f_stackadj F_t.tf_stackadj
132#define f_sr F_t.tf_sr
133#define f_pc F_t.tf_pc
134#define f_format F_t.tf_format
135#define f_vector F_t.tf_vector
136#define f_fmt2 F_u.F_fmt2
137#define f_fmt3 F_u.F_fmt3
138#define f_fmt4 F_u.F_fmt4
139#define f_fmt7 F_u.F_fmt7
140#define f_fmt8 F_u.F_fmt8
141#define f_fmt9 F_u.F_fmt9
142#define f_fmtA F_u.F_fmtA
143#define f_fmtB F_u.F_fmtB
144
145struct switchframe {
146 u_int sf_pc;
147};
148
149struct fpframe {
150 union FPF_u1 {
151 u_int FPF_null;
152 struct {
153 u_char FPF_version;
154 u_char FPF_fsize;
155 u_short FPF_res1;
156 } FPF_nonnull;
157 } FPF_u1;
158 union FPF_u2 {
159 struct fpidle {
160 u_short fpf_ccr;
161 u_short fpf_res2;
162 u_int fpf_iregs1[8];
163 u_int fpf_xops[3];
164 u_int fpf_opreg;
165 u_int fpf_biu;
166 } FPF_idle;
167
168 struct fpbusy {
169 u_int fpf_iregs[53];
170 } FPF_busy;
171
172 struct fpunimp {
173 u_int fpf_state[10];
174 } FPF_unimp;
175 } FPF_u2;
176 u_int fpf_regs[8*3];
177 u_int fpf_fpcr;
178 u_int fpf_fpsr;
179 u_int fpf_fpiar;
180};
181
182#define fpf_null FPF_u1.FPF_null
183#define fpf_version FPF_u1.FPF_nonnull.FPF_version
184#define fpf_fsize FPF_u1.FPF_nonnull.FPF_fsize
185#define fpf_res1 FPF_u1.FPF_nonnull.FPF_res1
186#define fpf_idle FPF_u2.FPF_idle
187#define fpf_busy FPF_u2.FPF_busy
188#define fpf_unimp FPF_u2.FPF_unimp
189
190/*
191 * This is incompatible with the earlier one; especially, an earlier frame
192 * must not be FRESTOREd on a 060 or vv, because a frame error exception is
193 * not guaranteed.
194 */
195
196
197struct fpframe060 {
198 u_short fpf6_excp_exp;
199 u_char fpf6_frmfmt;
200
201 u_char fpf6_v;
202
203 u_long fpf6_upper, fpf6_lower;
204};
205
206#endif /* _M68K_CPUFRAME_H_ */