master
1/* $NetBSD: frame.h,v 1.31 2019/02/18 01:12:23 thorpej 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_FRAME_H_
42#define _M68K_FRAME_H_
43
44#include <m68k/cpuframe.h>
45
46/* common frame size */
47#define CFSIZE (sizeof(struct frame) - sizeof(union F_u))
48#define NFMTSIZE 9
49
50#define FMT0 0x0
51#define FMT1 0x1
52#define FMT2 0x2
53#define FMT3 0x3
54#define FMT4 0x4
55#define FMT7 0x7
56#define FMT8 0x8
57#define FMT9 0x9
58#define FMTA 0xA
59#define FMTB 0xB
60
61/* frame specific info sizes */
62#define FMT0SIZE 0
63#define FMT1SIZE 0
64#define FMT2SIZE sizeof(struct fmt2)
65#define FMT3SIZE sizeof(struct fmt3)
66#define FMT4SIZE sizeof(struct fmt4)
67#define FMT7SIZE sizeof(struct fmt7)
68#define FMT8SIZE sizeof(struct fmt8)
69#define FMT9SIZE sizeof(struct fmt9)
70#define FMTASIZE sizeof(struct fmtA)
71#define FMTBSIZE sizeof(struct fmtB)
72
73#define V_BUSERR 0x008
74#define V_ADDRERR 0x00C
75#define V_TRAP1 0x084
76
77/* 68010 SSW bits */
78#define SSW1_RR 0x8000
79#define SSW1_IF 0x2000
80#define SSW1_DF 0x1000
81#define SSW1_RM 0x0800
82#define SSW1_HI 0x0400
83#define SSW1_BX 0x0200
84#define SSW1_RW 0x0100
85#define SSW1_FCMASK 0x000F
86
87/* 68020/68030 SSW bits */
88#define SSW_RC 0x2000
89#define SSW_RB 0x1000
90#define SSW_DF 0x0100
91#define SSW_RM 0x0080
92#define SSW_RW 0x0040
93#define SSW_FCMASK 0x0007
94
95/* 68040 SSW bits */
96#define SSW4_CP 0x8000
97#define SSW4_CU 0x4000
98#define SSW4_CT 0x2000
99#define SSW4_CM 0x1000
100#define SSW4_MA 0x0800
101#define SSW4_ATC 0x0400
102#define SSW4_LK 0x0200
103#define SSW4_RW 0x0100
104#define SSW4_WBSV 0x0080 /* really in WB status, not SSW */
105#define SSW4_SZMASK 0x0060
106#define SSW4_SZLW 0x0000
107#define SSW4_SZB 0x0020
108#define SSW4_SZW 0x0040
109#define SSW4_SZLN 0x0060
110#define SSW4_TTMASK 0x0018
111#define SSW4_TTNOR 0x0000
112#define SSW4_TTM16 0x0008
113#define SSW4_TMMASK 0x0007
114#define SSW4_TMDCP 0x0000
115#define SSW4_TMUD 0x0001
116#define SSW4_TMUC 0x0002
117#define SSW4_TMKD 0x0005
118#define SSW4_TMKC 0x0006
119
120/* 060 Fault Status Long Word (FPSP) */
121
122#define FSLW_MA 0x08000000
123#define FSLW_LK 0x02000000
124#define FSLW_RW 0x01800000
125
126#define FSLW_RW_R 0x01000000
127#define FSLW_RW_W 0x00800000
128
129#define FSLW_SIZE 0x00600000
130/*
131 * We better define the FSLW_SIZE values here, as the table given in the
132 * MC68060UM/AD rev. 0/1 p. 8-23 is wrong, and was corrected in the errata
133 * document.
134 */
135#define FSLW_SIZE_LONG 0x00000000
136#define FSLW_SIZE_BYTE 0x00200000
137#define FSLW_SIZE_WORD 0x00400000
138#define FSLW_SIZE_MV16 0x00600000
139
140#define FLSW_TT 0x00180000
141#define FSLW_TM 0x00070000
142#define FSLW_TM_SV 0x00040000
143
144
145
146#define FSLW_IO 0x00008000
147#define FSLW_PBE 0x00004000
148#define FSLW_SBE 0x00002000
149#define FSLW_PTA 0x00001000
150#define FSLW_PTB 0x00000800
151#define FSLW_IL 0x00000400
152#define FSLW_PF 0x00000200
153#define FSLW_SP 0x00000100
154#define FSLW_WP 0x00000080
155#define FSLW_TWE 0x00000040
156#define FSLW_RE 0x00000020
157#define FSLW_WE 0x00000010
158#define FSLW_TTR 0x00000008
159#define FSLW_BPE 0x00000004
160#define FSLW_SEE 0x00000001
161
162/* struct fpframe060 */
163#define FPF6_FMT_NULL 0x00
164#define FPF6_FMT_IDLE 0x60
165#define FPF6_FMT_EXCP 0xe0
166
167#define FPF6_V_BSUN 0
168#define FPF6_V_INEX12 1
169#define FPF6_V_DZ 2
170#define FPF6_V_UNFL 3
171#define FPF6_V_OPERR 4
172#define FPF6_V_OVFL 5
173#define FPF6_V_SNAN 6
174#define FPF6_V_UNSUP 7
175
176#if defined(_KERNEL)
177
178#include <m68k/signal.h>
179
180#if defined(COMPAT_16)
181/*
182 * Stack frame layout when delivering a signal.
183 */
184struct sigframe_sigcontext {
185 int sf_ra; /* handler return address */
186 int sf_signum; /* signal number for handler */
187 int sf_code; /* additional info for handler */
188 struct sigcontext *sf_scp; /* context pointer for handler */
189 struct sigcontext sf_sc; /* actual context */
190 struct sigstate sf_state; /* state of the hardware */
191};
192#endif
193
194struct sigframe_siginfo {
195 int sf_ra; /* return address for handler */
196 int sf_signum; /* "signum" argument for handler */
197 siginfo_t *sf_sip; /* "sip" argument for handler */
198 ucontext_t *sf_ucp; /* "ucp" argument for handler */
199 siginfo_t sf_si; /* actual saved siginfo */
200 ucontext_t sf_uc; /* actual saved ucontext */
201};
202
203/*
204 * Utility function to relocate the initial frame, make room to restore an
205 * exception frame and reenter the syscall.
206 */
207void reenter_syscall(struct frame *, int) __attribute__((__noreturn__));
208
209/*
210 * Create an FPU "idle" frame for use by cpu_setmcontext()
211 */
212extern void m68k_make_fpu_idle_frame(void);
213extern struct fpframe m68k_cached_fpu_idle_frame;
214
215void *getframe(struct lwp *, int, int *);
216void buildcontext(struct lwp *, void *, void *);
217#ifdef COMPAT_16
218void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
219#endif
220
221#ifdef M68040
222int m68040_writeback(struct frame *, int);
223#endif
224
225#if defined(__mc68010__)
226/*
227 * Restartable atomic sequence-cased compare-and-swap for atomic_cas ops
228 * and locking primitives. We defined this here because it manipulates a
229 * "clockframe" as prepared by interrupt handlers.
230 */
231extern char _atomic_cas_ras_start;
232extern char _atomic_cas_ras_end;
233
234#define ATOMIC_CAS_CHECK(cfp) \
235do { \
236 if (! CLKF_USERMODE(cfp) && \
237 (CLKF_PC(cfp) < (u_long)&_atomic_cas_ras_end && \
238 CLKF_PC(cfp) > (u_long)&_atomic_cas_ras_start)) { \
239 (cfp)->cf_pc = (u_long)&_atomic_cas_ras_start; \
240 } \
241} while (/*CONSTCOND*/0)
242#else
243#define ATOMIC_CAS_CHECK(cfp) /* nothing */
244#endif /* __mc68010__ */
245
246#endif /* _KERNEL */
247
248#endif /* _M68K_FRAME_H_ */