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traps.h
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1 /*
2  * linux/include/asm/traps.h
3  *
4  * Copyright (C) 1993 Hamish Macdonald
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file COPYING in the main directory of this archive
8  * for more details.
9  */
10 
11 #ifndef _M68K_TRAPS_H
12 #define _M68K_TRAPS_H
13 
14 #ifndef __ASSEMBLY__
15 
16 #include <linux/linkage.h>
17 #include <asm/ptrace.h>
18 
19 typedef void (*e_vector)(void);
20 extern e_vector vectors[];
21 extern e_vector *_ramvec;
22 
23 asmlinkage void auto_inthandler(void);
24 asmlinkage void user_inthandler(void);
25 asmlinkage void bad_inthandler(void);
26 
27 #endif
28 
29 #define VEC_RESETSP (0)
30 #define VEC_RESETPC (1)
31 #define VEC_BUSERR (2)
32 #define VEC_ADDRERR (3)
33 #define VEC_ILLEGAL (4)
34 #define VEC_ZERODIV (5)
35 #define VEC_CHK (6)
36 #define VEC_TRAP (7)
37 #define VEC_PRIV (8)
38 #define VEC_TRACE (9)
39 #define VEC_LINE10 (10)
40 #define VEC_LINE11 (11)
41 #define VEC_RESV12 (12)
42 #define VEC_COPROC (13)
43 #define VEC_FORMAT (14)
44 #define VEC_UNINT (15)
45 #define VEC_RESV16 (16)
46 #define VEC_RESV17 (17)
47 #define VEC_RESV18 (18)
48 #define VEC_RESV19 (19)
49 #define VEC_RESV20 (20)
50 #define VEC_RESV21 (21)
51 #define VEC_RESV22 (22)
52 #define VEC_RESV23 (23)
53 #define VEC_SPUR (24)
54 #define VEC_INT1 (25)
55 #define VEC_INT2 (26)
56 #define VEC_INT3 (27)
57 #define VEC_INT4 (28)
58 #define VEC_INT5 (29)
59 #define VEC_INT6 (30)
60 #define VEC_INT7 (31)
61 #define VEC_SYS (32)
62 #define VEC_TRAP1 (33)
63 #define VEC_TRAP2 (34)
64 #define VEC_TRAP3 (35)
65 #define VEC_TRAP4 (36)
66 #define VEC_TRAP5 (37)
67 #define VEC_TRAP6 (38)
68 #define VEC_TRAP7 (39)
69 #define VEC_TRAP8 (40)
70 #define VEC_TRAP9 (41)
71 #define VEC_TRAP10 (42)
72 #define VEC_TRAP11 (43)
73 #define VEC_TRAP12 (44)
74 #define VEC_TRAP13 (45)
75 #define VEC_TRAP14 (46)
76 #define VEC_TRAP15 (47)
77 #define VEC_FPBRUC (48)
78 #define VEC_FPIR (49)
79 #define VEC_FPDIVZ (50)
80 #define VEC_FPUNDER (51)
81 #define VEC_FPOE (52)
82 #define VEC_FPOVER (53)
83 #define VEC_FPNAN (54)
84 #define VEC_FPUNSUP (55)
85 #define VEC_MMUCFG (56)
86 #define VEC_MMUILL (57)
87 #define VEC_MMUACC (58)
88 #define VEC_RESV59 (59)
89 #define VEC_UNIMPEA (60)
90 #define VEC_UNIMPII (61)
91 #define VEC_RESV62 (62)
92 #define VEC_RESV63 (63)
93 #define VEC_USER (64)
94 
95 #define VECOFF(vec) ((vec)<<2)
96 
97 #ifndef __ASSEMBLY__
98 
99 /* Status register bits */
100 #define PS_T (0x8000)
101 #define PS_S (0x2000)
102 #define PS_M (0x1000)
103 #define PS_C (0x0001)
104 
105 /* bits for 68020/68030 special status word */
106 
107 #define FC (0x8000)
108 #define FB (0x4000)
109 #define RC (0x2000)
110 #define RB (0x1000)
111 #define DF (0x0100)
112 #define RM (0x0080)
113 #define RW (0x0040)
114 #define SZ (0x0030)
115 #define DFC (0x0007)
116 
117 /* bits for 68030 MMU status register (mmusr,psr) */
118 
119 #define MMU_B (0x8000) /* bus error */
120 #define MMU_L (0x4000) /* limit violation */
121 #define MMU_S (0x2000) /* supervisor violation */
122 #define MMU_WP (0x0800) /* write-protected */
123 #define MMU_I (0x0400) /* invalid descriptor */
124 #define MMU_M (0x0200) /* ATC entry modified */
125 #define MMU_T (0x0040) /* transparent translation */
126 #define MMU_NUM (0x0007) /* number of levels traversed */
127 
128 
129 /* bits for 68040 special status word */
130 #define CP_040 (0x8000)
131 #define CU_040 (0x4000)
132 #define CT_040 (0x2000)
133 #define CM_040 (0x1000)
134 #define MA_040 (0x0800)
135 #define ATC_040 (0x0400)
136 #define LK_040 (0x0200)
137 #define RW_040 (0x0100)
138 #define SIZ_040 (0x0060)
139 #define TT_040 (0x0018)
140 #define TM_040 (0x0007)
141 
142 /* bits for 68040 write back status word */
143 #define WBV_040 (0x80)
144 #define WBSIZ_040 (0x60)
145 #define WBBYT_040 (0x20)
146 #define WBWRD_040 (0x40)
147 #define WBLNG_040 (0x00)
148 #define WBTT_040 (0x18)
149 #define WBTM_040 (0x07)
150 
151 /* bus access size codes */
152 #define BA_SIZE_BYTE (0x20)
153 #define BA_SIZE_WORD (0x40)
154 #define BA_SIZE_LONG (0x00)
155 #define BA_SIZE_LINE (0x60)
156 
157 /* bus access transfer type codes */
158 #define BA_TT_MOVE16 (0x08)
159 
160 /* bits for 68040 MMU status register (mmusr) */
161 #define MMU_B_040 (0x0800)
162 #define MMU_G_040 (0x0400)
163 #define MMU_S_040 (0x0080)
164 #define MMU_CM_040 (0x0060)
165 #define MMU_M_040 (0x0010)
166 #define MMU_WP_040 (0x0004)
167 #define MMU_T_040 (0x0002)
168 #define MMU_R_040 (0x0001)
169 
170 /* bits in the 68060 fault status long word (FSLW) */
171 #define MMU060_MA (0x08000000) /* misaligned */
172 #define MMU060_LK (0x02000000) /* locked transfer */
173 #define MMU060_RW (0x01800000) /* read/write */
174 # define MMU060_RW_W (0x00800000) /* write */
175 # define MMU060_RW_R (0x01000000) /* read */
176 # define MMU060_RW_RMW (0x01800000) /* read/modify/write */
177 # define MMU060_W (0x00800000) /* general write, includes rmw */
178 #define MMU060_SIZ (0x00600000) /* transfer size */
179 #define MMU060_TT (0x00180000) /* transfer type (TT) bits */
180 #define MMU060_TM (0x00070000) /* transfer modifier (TM) bits */
181 #define MMU060_IO (0x00008000) /* instruction or operand */
182 #define MMU060_PBE (0x00004000) /* push buffer bus error */
183 #define MMU060_SBE (0x00002000) /* store buffer bus error */
184 #define MMU060_PTA (0x00001000) /* pointer A fault */
185 #define MMU060_PTB (0x00000800) /* pointer B fault */
186 #define MMU060_IL (0x00000400) /* double indirect descr fault */
187 #define MMU060_PF (0x00000200) /* page fault (invalid descr) */
188 #define MMU060_SP (0x00000100) /* supervisor protection */
189 #define MMU060_WP (0x00000080) /* write protection */
190 #define MMU060_TWE (0x00000040) /* bus error on table search */
191 #define MMU060_RE (0x00000020) /* bus error on read */
192 #define MMU060_WE (0x00000010) /* bus error on write */
193 #define MMU060_TTR (0x00000008) /* error caused by TTR translation */
194 #define MMU060_BPE (0x00000004) /* branch prediction error */
195 #define MMU060_SEE (0x00000001) /* software emulated error */
196 
197 /* cases of missing or invalid descriptors */
198 #define MMU060_DESC_ERR (MMU060_PTA | MMU060_PTB | \
199  MMU060_IL | MMU060_PF)
200 /* bits that indicate real errors */
201 #define MMU060_ERR_BITS (MMU060_PBE | MMU060_SBE | MMU060_DESC_ERR | MMU060_SP | \
202  MMU060_WP | MMU060_TWE | MMU060_RE | MMU060_WE)
203 
204 /* structure for stack frames */
205 
206 struct frame {
207  struct pt_regs ptregs;
208  union {
209  struct {
210  unsigned long iaddr; /* instruction address */
211  } fmt2;
212  struct {
213  unsigned long effaddr; /* effective address */
214  } fmt3;
215  struct {
216  unsigned long effaddr; /* effective address */
217  unsigned long pc; /* pc of faulted instr */
218  } fmt4;
219  struct {
220  unsigned long effaddr; /* effective address */
221  unsigned short ssw; /* special status word */
222  unsigned short wb3s; /* write back 3 status */
223  unsigned short wb2s; /* write back 2 status */
224  unsigned short wb1s; /* write back 1 status */
225  unsigned long faddr; /* fault address */
226  unsigned long wb3a; /* write back 3 address */
227  unsigned long wb3d; /* write back 3 data */
228  unsigned long wb2a; /* write back 2 address */
229  unsigned long wb2d; /* write back 2 data */
230  unsigned long wb1a; /* write back 1 address */
231  unsigned long wb1dpd0; /* write back 1 data/push data 0*/
232  unsigned long pd1; /* push data 1*/
233  unsigned long pd2; /* push data 2*/
234  unsigned long pd3; /* push data 3*/
235  } fmt7;
236  struct {
237  unsigned long iaddr; /* instruction address */
238  unsigned short int1[4]; /* internal registers */
239  } fmt9;
240  struct {
241  unsigned short int1;
242  unsigned short ssw; /* special status word */
243  unsigned short isc; /* instruction stage c */
244  unsigned short isb; /* instruction stage b */
245  unsigned long daddr; /* data cycle fault address */
246  unsigned short int2[2];
247  unsigned long dobuf; /* data cycle output buffer */
248  unsigned short int3[2];
249  } fmta;
250  struct {
251  unsigned short int1;
252  unsigned short ssw; /* special status word */
253  unsigned short isc; /* instruction stage c */
254  unsigned short isb; /* instruction stage b */
255  unsigned long daddr; /* data cycle fault address */
256  unsigned short int2[2];
257  unsigned long dobuf; /* data cycle output buffer */
258  unsigned short int3[4];
259  unsigned long baddr; /* stage B address */
260  unsigned short int4[2];
261  unsigned long dibuf; /* data cycle input buffer */
262  unsigned short int5[3];
263  unsigned ver : 4; /* stack frame version # */
264  unsigned int6:12;
265  unsigned short int7[18];
266  } fmtb;
267  } un;
268 };
269 
270 #endif /* __ASSEMBLY__ */
271 
272 #endif /* _M68K_TRAPS_H */
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