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8aa13b87 JK |
1 | /* Copyright (C) 1988, 1990 Free Software Foundation, Inc. |
2 | ||
3 | This file is part of GDB. | |
4 | ||
5 | GDB is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 1, or (at your option) | |
8 | any later version. | |
9 | ||
10 | GDB is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with GDB; see the file COPYING. If not, write to | |
17 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include "defs.h" | |
21 | #include "param.h" | |
22 | #include "frame.h" | |
23 | #include "inferior.h" | |
24 | ||
25 | #ifdef USG | |
26 | #include <sys/types.h> | |
27 | #endif | |
28 | ||
29 | #include <sys/param.h> | |
30 | #include <sys/dir.h> | |
31 | #include <signal.h> | |
32 | #include "gdbcore.h" | |
33 | #include <sys/user.h> | |
34 | #ifndef USER /* added to support BCS ptrace_user */ | |
35 | ||
36 | #define USER ptrace_user | |
37 | #endif | |
38 | #include <sys/ioctl.h> | |
39 | #include <fcntl.h> | |
40 | ||
41 | #ifdef COFF_ENCAPSULATE | |
42 | #include "a.out.encap.h" | |
43 | #else | |
44 | #include <a.out.h> | |
45 | #endif | |
46 | ||
47 | #include <sys/file.h> | |
48 | #include <sys/stat.h> | |
49 | ||
50 | #include "symtab.h" | |
51 | #include "setjmp.h" | |
52 | #include "value.h" | |
53 | ||
54 | /* define offsets to the pc instruction offsets in ptrace_user struct */ | |
55 | #define SXIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sxip - \ | |
56 | (char *)&u | |
57 | ||
58 | #define SNIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_snip - \ | |
59 | (char *)&u | |
60 | ||
61 | #define SFIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u | |
62 | extern int have_symbol_file_p(); | |
63 | ||
64 | extern jmp_buf stack_jmp; | |
65 | ||
66 | extern int errno; | |
67 | extern char registers[REGISTER_BYTES]; | |
68 | \f | |
69 | void | |
70 | fetch_inferior_registers () | |
71 | { | |
72 | register int regno; | |
73 | register unsigned int regaddr; | |
74 | char buf[MAX_REGISTER_RAW_SIZE]; | |
75 | register int i; | |
76 | ||
77 | struct USER u; | |
78 | unsigned int offset; | |
79 | ||
80 | offset = (char *) &u.pt_r0 - (char *) &u; | |
81 | regaddr = offset; /* byte offset to r0;*/ | |
82 | ||
83 | /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */ | |
84 | for (regno = 0; regno < NUM_REGS; regno++) | |
85 | { | |
86 | /*regaddr = register_addr (regno, offset);*/ | |
87 | /* 88k enhancement */ | |
88 | ||
89 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) | |
90 | { | |
91 | *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0); | |
92 | regaddr += sizeof (int); | |
93 | } | |
94 | supply_register (regno, buf); | |
95 | } | |
96 | /* now load up registers 36 - 38; special pc registers */ | |
97 | *(int *) &buf[0] = ptrace (3,inferior_pid,(char *)&u.pt_sigframe.dg_sigframe.sc_sxip - (char *)&u ,0); | |
98 | supply_register (SXIP_REGNUM, buf); | |
99 | *(int *) &buf[0] = ptrace (3, inferior_pid, (char *)&u.pt_sigframe.dg_sigframe.sc_snip - (char *)&u ,0); | |
100 | supply_register (SNIP_REGNUM, buf); | |
101 | *(int *) &buf[0] = ptrace (3, inferior_pid, (char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u ,0); | |
102 | supply_register (SFIP_REGNUM, buf); | |
103 | } | |
104 | ||
105 | /* Store our register values back into the inferior. | |
106 | If REGNO is -1, do this for all registers. | |
107 | Otherwise, REGNO specifies which register (so we can save time). */ | |
108 | ||
109 | store_inferior_registers (regno) | |
110 | int regno; | |
111 | { | |
112 | register unsigned int regaddr; | |
113 | char buf[80]; | |
114 | ||
115 | struct USER u; | |
116 | ||
117 | #if defined(BCS) | |
118 | #if defined(DGUX) | |
119 | ||
120 | unsigned int offset = (char *) &u.pt_r0 - (char *) &u; | |
121 | ||
122 | #endif /* defined (DGUX) */ | |
123 | #else | |
124 | ||
125 | unsigned int offset = (char *) &u.pt_r0 - (char *) &u; | |
126 | ||
127 | #endif /* defined(BCS) */ | |
128 | /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */ | |
129 | regaddr = offset; | |
130 | ||
131 | if (regno >= 0) | |
132 | { | |
133 | /* regaddr = register_addr (regno, offset); */ | |
134 | if (regno < PC_REGNUM) | |
135 | { | |
136 | regaddr = offset + regno * sizeof (int); | |
137 | errno = 0; | |
138 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
139 | if (errno != 0) | |
140 | { | |
141 | sprintf (buf, "writing register number %d", regno); | |
142 | perror_with_name (buf); | |
143 | } | |
144 | } | |
145 | else if (regno == SXIP_REGNUM) | |
146 | ptrace (6, inferior_pid, SXIP_OFFSET, read_register(regno)); | |
147 | else if (regno == SNIP_REGNUM) | |
148 | ptrace (6, inferior_pid, SNIP_OFFSET, read_register(regno)); | |
149 | else if (regno == SFIP_REGNUM) | |
150 | ptrace (6, inferior_pid, SFIP_OFFSET, read_register(regno)); | |
151 | else printf ("Bad register number for store_inferior routine\n"); | |
152 | } | |
153 | else { | |
154 | for (regno = 0; regno < NUM_REGS - 3; regno++) | |
155 | { | |
156 | /* regaddr = register_addr (regno, offset); */ | |
157 | errno = 0; | |
158 | regaddr = offset + regno * sizeof (int); | |
159 | ptrace (6, inferior_pid, regaddr, read_register (regno)); | |
160 | if (errno != 0) | |
161 | { | |
162 | sprintf (buf, "writing register number %d", regno); | |
163 | perror_with_name (buf); | |
164 | } | |
165 | } | |
166 | ptrace (6,inferior_pid,SXIP_OFFSET,read_register(SXIP_REGNUM)); | |
167 | ptrace (6,inferior_pid,SNIP_OFFSET,read_register(SNIP_REGNUM)); | |
168 | ptrace (6,inferior_pid,SFIP_OFFSET,read_register(SFIP_REGNUM)); | |
169 | } | |
170 | ||
171 | ||
172 | } | |
173 | ||
174 | #if 0 | |
175 | /* Core files are now a function of BFD. */ | |
176 | \f | |
177 | void | |
178 | core_file_command (filename, from_tty) | |
179 | char *filename; | |
180 | int from_tty; | |
181 | { | |
182 | int val; | |
183 | extern char registers[]; | |
184 | ||
185 | /* Need symbol file and one with tdesc info for corefiles to work */ | |
186 | if (!have_symbol_file_p()) | |
187 | error ("Requires symbol-file and exec-file"); | |
188 | if (!execfile) | |
189 | error ("Requires exec-file and symbol-file"); | |
190 | ||
191 | /* Discard all vestiges of any previous core file | |
192 | and mark data and stack spaces as empty. */ | |
193 | ||
194 | if (corefile) | |
195 | free (corefile); | |
196 | corefile = 0; | |
197 | ||
198 | if (corechan >= 0) | |
199 | close (corechan); | |
200 | corechan = -1; | |
201 | ||
202 | data_start = 0; | |
203 | data_end = 0; | |
204 | stack_start = STACK_END_ADDR; | |
205 | stack_end = STACK_END_ADDR; | |
206 | ||
207 | /* Now, if a new core file was specified, open it and digest it. */ | |
208 | ||
209 | if (filename) | |
210 | { | |
211 | filename = tilde_expand (filename); | |
212 | make_cleanup (free, filename); | |
213 | ||
214 | if (have_inferior_p ()) | |
215 | error ("To look at a core file, you must kill the inferior with \"kill\"."); | |
216 | corechan = open (filename, O_RDONLY, 0); | |
217 | if (corechan < 0) | |
218 | perror_with_name (filename); | |
219 | /* 4.2-style (and perhaps also sysV-style) core dump file. */ | |
220 | { | |
221 | struct USER u; | |
222 | ||
223 | int reg_offset; | |
224 | ||
225 | val = myread (corechan, &u, sizeof u); | |
226 | if (val < 0) | |
227 | perror_with_name (filename); | |
228 | data_start = u.pt_o_data_start; | |
229 | ||
230 | data_end = data_start + u.pt_dsize; | |
231 | stack_start = stack_end - u.pt_ssize; | |
232 | data_offset = u.pt_dataptr; | |
233 | stack_offset = data_offset + u.pt_dsize; | |
234 | ||
235 | #if defined(BCS) | |
236 | #if defined(DGUX) | |
237 | ||
238 | reg_offset = 2048; | |
239 | ||
240 | ||
241 | #endif /* defined (DGUX) */ | |
242 | #else | |
243 | ||
244 | /* original code: */ | |
245 | reg_offset = (int) u.pt_r0 - KERNEL_U_ADDR; | |
246 | ||
247 | #endif /* defined(BCS) */ | |
248 | ||
249 | /* I don't know where to find this info. | |
250 | So, for now, mark it as not available. */ | |
251 | /* N_SET_MAGIC (core_aouthdr, 0); */ | |
252 | bzero ((char *) &core_aouthdr, sizeof core_aouthdr); | |
253 | ||
254 | /* Read the register values out of the core file and store | |
255 | them where `read_register' will find them. */ | |
256 | ||
257 | { | |
258 | register int regno; | |
259 | ||
260 | for (regno = 0; regno < NUM_REGS; regno++) | |
261 | { | |
262 | char buf[MAX_REGISTER_RAW_SIZE]; | |
263 | ||
264 | val = lseek (corechan, register_addr (regno, reg_offset), 0); | |
265 | if (val < 0) | |
266 | perror_with_name (filename); | |
267 | ||
268 | val = myread (corechan, buf, sizeof buf); | |
269 | if (val < 0) | |
270 | perror_with_name (filename); | |
271 | supply_register (regno, buf); | |
272 | } | |
273 | } | |
274 | } | |
275 | if (filename[0] == '/') | |
276 | corefile = savestring (filename, strlen (filename)); | |
277 | else | |
278 | { | |
279 | corefile = concat (current_directory, "/", filename); | |
280 | } | |
281 | init_tdesc(); | |
282 | current_context = init_dcontext(); | |
283 | set_current_frame ( create_new_frame(get_frame_base (read_pc()), | |
284 | read_pc ())); | |
285 | select_frame (get_current_frame (), 0); | |
286 | validate_files (); | |
287 | } | |
288 | else if (from_tty) | |
289 | printf ("No core file now.\n"); | |
290 | } | |
291 | #endif | |
292 | \f | |
293 | /* blockend is the address of the end of the user structure */ | |
294 | m88k_register_u_addr (blockend, regnum) | |
295 | { | |
296 | struct USER u; | |
297 | int ustart = blockend - sizeof (struct USER); | |
298 | switch (regnum) | |
299 | { | |
300 | case 0: | |
301 | case 1: | |
302 | case 2: | |
303 | case 3: | |
304 | case 4: | |
305 | case 5: | |
306 | case 6: | |
307 | case 7: | |
308 | case 8: | |
309 | case 9: | |
310 | case 10: | |
311 | case 11: | |
312 | case 12: | |
313 | case 13: | |
314 | case 14: | |
315 | case 15: | |
316 | case 16: | |
317 | case 17: | |
318 | case 18: | |
319 | case 19: | |
320 | case 20: | |
321 | case 21: | |
322 | case 22: | |
323 | case 23: | |
324 | case 24: | |
325 | case 25: | |
326 | case 26: | |
327 | case 27: | |
328 | case 28: | |
329 | case 29: | |
330 | case 30: | |
331 | case 31: return (ustart + ((int) &u.pt_r0 - (int) &u) + sizeof(REGISTER_TYPE) * regnum); | |
332 | case PSR_REGNUM: return (ustart + ((int) &u.pt_psr - (int) &u)); | |
333 | case FPSR_REGNUM: return (ustart + ((int) &u.pt_fpsr - (int) &u)); | |
334 | case FPCR_REGNUM: return (ustart + ((int) &u.pt_fpcr - (int) &u)); | |
335 | case SXIP_REGNUM: return (ustart + SXIP_OFFSET); | |
336 | case SNIP_REGNUM: return (ustart + SNIP_OFFSET); | |
337 | case SFIP_REGNUM: return (ustart + SFIP_OFFSET); | |
338 | default: return (blockend + sizeof (REGISTER_TYPE) * regnum); | |
339 | } | |
340 | } |