Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
601cecf0 | 3 | Copyright 1994, 1995, 1996, 1998, 2003 Andrew Cagney |
c906108c SS |
4 | |
5 | This program 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 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program 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 this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #include <signal.h> /* FIXME - should be machine dependant version */ | |
23 | #include <stdarg.h> | |
24 | #include <ctype.h> | |
25 | ||
26 | #include "psim.h" | |
27 | #include "options.h" | |
28 | ||
29 | #undef printf_filtered /* blow away the mapping */ | |
30 | ||
31 | #ifdef HAVE_STDLIB_H | |
32 | #include <stdlib.h> | |
33 | #endif | |
34 | ||
35 | #ifdef HAVE_STRING_H | |
36 | #include <string.h> | |
37 | #else | |
38 | #ifdef HAVE_STRINGS_H | |
39 | #include <strings.h> | |
40 | #endif | |
41 | #endif | |
42 | ||
2b3cc94f | 43 | #include "libiberty.h" |
c906108c | 44 | #include "bfd.h" |
3c25f8c7 AC |
45 | #include "gdb/callback.h" |
46 | #include "gdb/remote-sim.h" | |
aba6488e | 47 | #include "gdb/signals.h" |
c906108c | 48 | |
7a292a7a SS |
49 | /* Define the rate at which the simulator should poll the host |
50 | for a quit. */ | |
51 | #ifndef POLL_QUIT_INTERVAL | |
52 | #define POLL_QUIT_INTERVAL 0x20 | |
53 | #endif | |
54 | ||
55 | static int poll_quit_count = POLL_QUIT_INTERVAL; | |
c906108c SS |
56 | |
57 | /* Structures used by the simulator, for gdb just have static structures */ | |
58 | ||
91cd1042 | 59 | psim *simulator; |
c906108c SS |
60 | static device *root_device; |
61 | static host_callback *callbacks; | |
62 | ||
c906108c SS |
63 | SIM_DESC |
64 | sim_open (SIM_OPEN_KIND kind, | |
65 | host_callback *callback, | |
6b4a8935 | 66 | struct bfd *abfd, |
c906108c SS |
67 | char **argv) |
68 | { | |
69 | callbacks = callback; | |
70 | ||
71 | /* Note: The simulation is not created by sim_open() because | |
72 | complete information is not yet available */ | |
73 | /* trace the call */ | |
74 | TRACE(trace_gdb, ("sim_open called\n")); | |
75 | ||
76 | if (root_device != NULL) | |
77 | sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n"); | |
78 | root_device = psim_tree(); | |
79 | simulator = NULL; | |
80 | ||
81 | psim_options(root_device, argv + 1); | |
82 | ||
83 | if (ppc_trace[trace_opts]) | |
84 | print_options (); | |
85 | ||
86 | /* fudge our descriptor for now */ | |
87 | return (SIM_DESC) 1; | |
88 | } | |
89 | ||
90 | ||
91 | void | |
92 | sim_close (SIM_DESC sd, int quitting) | |
93 | { | |
94 | TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting)); | |
95 | if (ppc_trace[trace_print_info] && simulator != NULL) | |
96 | psim_print_info (simulator, ppc_trace[trace_print_info]); | |
97 | } | |
98 | ||
99 | ||
100 | SIM_RC | |
101 | sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty) | |
102 | { | |
103 | TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n", | |
104 | prog, from_tty)); | |
105 | ASSERT(prog != NULL); | |
106 | ||
107 | /* create the simulator */ | |
108 | TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n")); | |
109 | simulator = psim_create(prog, root_device); | |
110 | ||
111 | /* bring in all the data section */ | |
112 | psim_init(simulator); | |
113 | ||
114 | /* get the start address */ | |
115 | if (abfd == NULL) | |
116 | { | |
117 | abfd = bfd_openr (prog, 0); | |
118 | if (abfd == NULL) | |
119 | error ("psim: can't open \"%s\": %s\n", | |
120 | prog, bfd_errmsg (bfd_get_error ())); | |
121 | if (!bfd_check_format (abfd, bfd_object)) | |
122 | { | |
123 | const char *errmsg = bfd_errmsg (bfd_get_error ()); | |
124 | bfd_close (abfd); | |
125 | error ("psim: \"%s\" is not an object file: %s\n", | |
126 | prog, errmsg); | |
127 | } | |
128 | bfd_close (abfd); | |
129 | } | |
130 | ||
131 | return SIM_RC_OK; | |
132 | } | |
133 | ||
134 | ||
135 | int | |
136 | sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length) | |
137 | { | |
138 | int result = psim_read_memory(simulator, MAX_NR_PROCESSORS, | |
139 | buf, mem, length); | |
140 | TRACE(trace_gdb, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n", | |
141 | (long)mem, (long)buf, length, result)); | |
142 | return result; | |
143 | } | |
144 | ||
145 | ||
146 | int | |
5558e7e6 | 147 | sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length) |
c906108c SS |
148 | { |
149 | int result = psim_write_memory(simulator, MAX_NR_PROCESSORS, | |
150 | buf, mem, length, | |
151 | 1/*violate_ro*/); | |
152 | TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n", | |
153 | (long)mem, (long)buf, length, result)); | |
154 | return result; | |
155 | } | |
156 | ||
c906108c SS |
157 | void |
158 | sim_info (SIM_DESC sd, int verbose) | |
159 | { | |
160 | TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose)); | |
161 | psim_print_info (simulator, verbose); | |
162 | } | |
163 | ||
164 | ||
165 | SIM_RC | |
166 | sim_create_inferior (SIM_DESC sd, | |
6b4a8935 | 167 | struct bfd *abfd, |
c906108c SS |
168 | char **argv, |
169 | char **envp) | |
170 | { | |
171 | unsigned_word entry_point; | |
172 | TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n", | |
173 | entry_point)); | |
174 | ||
175 | if (simulator == NULL) | |
176 | error ("No program loaded"); | |
177 | ||
178 | if (abfd != NULL) | |
179 | entry_point = bfd_get_start_address (abfd); | |
180 | else | |
181 | entry_point = 0xfff00000; /* ??? */ | |
182 | ||
183 | psim_init(simulator); | |
184 | psim_stack(simulator, argv, envp); | |
185 | ||
601cecf0 AC |
186 | ASSERT (psim_write_register(simulator, -1 /* all start at same PC */, |
187 | &entry_point, "pc", cooked_transfer) > 0); | |
c906108c SS |
188 | return SIM_RC_OK; |
189 | } | |
190 | ||
191 | ||
192 | void | |
193 | sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) | |
194 | { | |
195 | psim_status status = psim_get_status(simulator); | |
196 | ||
197 | switch (status.reason) { | |
198 | case was_continuing: | |
199 | *reason = sim_stopped; | |
200 | if (status.signal == 0) | |
aba6488e | 201 | *sigrc = TARGET_SIGNAL_TRAP; |
c906108c SS |
202 | else |
203 | *sigrc = status.signal; | |
204 | break; | |
205 | case was_trap: | |
206 | *reason = sim_stopped; | |
aba6488e | 207 | *sigrc = TARGET_SIGNAL_TRAP; |
c906108c SS |
208 | break; |
209 | case was_exited: | |
210 | *reason = sim_exited; | |
211 | *sigrc = status.signal; | |
212 | break; | |
213 | case was_signalled: | |
214 | *reason = sim_signalled; | |
215 | *sigrc = status.signal; | |
216 | break; | |
217 | } | |
218 | ||
219 | TRACE(trace_gdb, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n", | |
220 | (long)reason, (long)*reason, (long)sigrc, (long)*sigrc)); | |
221 | } | |
222 | ||
223 | ||
224 | ||
225 | /* Run (or resume) the program. */ | |
226 | ||
227 | int | |
228 | sim_stop (SIM_DESC sd) | |
229 | { | |
230 | psim_stop (simulator); | |
231 | return 1; | |
232 | } | |
233 | ||
234 | void | |
235 | sim_resume (SIM_DESC sd, int step, int siggnal) | |
236 | { | |
237 | TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n", | |
238 | step, siggnal)); | |
239 | ||
240 | if (step) | |
241 | { | |
242 | psim_step (simulator); | |
243 | } | |
244 | else | |
245 | { | |
246 | psim_run (simulator); | |
247 | } | |
248 | } | |
249 | ||
250 | void | |
251 | sim_do_command (SIM_DESC sd, char *cmd) | |
252 | { | |
253 | TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", | |
254 | cmd ? cmd : "(null)")); | |
255 | if (cmd != NULL) { | |
256 | char **argv = buildargv(cmd); | |
257 | psim_command(root_device, argv); | |
258 | freeargv(argv); | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* Polling, if required */ | |
264 | ||
265 | void | |
266 | sim_io_poll_quit (void) | |
267 | { | |
7a292a7a | 268 | if (callbacks->poll_quit != NULL && poll_quit_count-- < 0) |
c906108c | 269 | { |
7a292a7a | 270 | poll_quit_count = POLL_QUIT_INTERVAL; |
c906108c SS |
271 | if (callbacks->poll_quit (callbacks)) |
272 | psim_stop (simulator); | |
273 | } | |
274 | } | |
275 | ||
276 | ||
277 | ||
278 | /* Map simulator IO operations onto the corresponding GDB I/O | |
279 | functions. | |
280 | ||
281 | NB: Only a limited subset of operations are mapped across. More | |
282 | advanced operations (such as dup or write) must either be mapped to | |
283 | one of the below calls or handled internally */ | |
284 | ||
285 | int | |
286 | sim_io_read_stdin(char *buf, | |
287 | int sizeof_buf) | |
288 | { | |
289 | switch (CURRENT_STDIO) { | |
290 | case DO_USE_STDIO: | |
291 | return callbacks->read_stdin(callbacks, buf, sizeof_buf); | |
292 | break; | |
293 | case DONT_USE_STDIO: | |
294 | return callbacks->read(callbacks, 0, buf, sizeof_buf); | |
295 | break; | |
296 | default: | |
297 | error("sim_io_read_stdin: unaccounted switch\n"); | |
298 | break; | |
299 | } | |
300 | return 0; | |
301 | } | |
302 | ||
303 | int | |
304 | sim_io_write_stdout(const char *buf, | |
305 | int sizeof_buf) | |
306 | { | |
307 | switch (CURRENT_STDIO) { | |
308 | case DO_USE_STDIO: | |
309 | return callbacks->write_stdout(callbacks, buf, sizeof_buf); | |
310 | break; | |
311 | case DONT_USE_STDIO: | |
312 | return callbacks->write(callbacks, 1, buf, sizeof_buf); | |
313 | break; | |
314 | default: | |
315 | error("sim_io_write_stdout: unaccounted switch\n"); | |
316 | break; | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
321 | int | |
322 | sim_io_write_stderr(const char *buf, | |
323 | int sizeof_buf) | |
324 | { | |
325 | switch (CURRENT_STDIO) { | |
326 | case DO_USE_STDIO: | |
327 | /* NB: I think there should be an explicit write_stderr callback */ | |
328 | return callbacks->write(callbacks, 3, buf, sizeof_buf); | |
329 | break; | |
330 | case DONT_USE_STDIO: | |
331 | return callbacks->write(callbacks, 3, buf, sizeof_buf); | |
332 | break; | |
333 | default: | |
334 | error("sim_io_write_stderr: unaccounted switch\n"); | |
335 | break; | |
336 | } | |
337 | return 0; | |
338 | } | |
339 | ||
340 | ||
341 | void | |
342 | sim_io_printf_filtered(const char *fmt, | |
343 | ...) | |
344 | { | |
345 | char message[1024]; | |
346 | va_list ap; | |
347 | /* format the message */ | |
348 | va_start(ap, fmt); | |
349 | vsprintf(message, fmt, ap); | |
350 | va_end(ap); | |
351 | /* sanity check */ | |
352 | if (strlen(message) >= sizeof(message)) | |
353 | error("sim_io_printf_filtered: buffer overflow\n"); | |
354 | callbacks->printf_filtered(callbacks, "%s", message); | |
355 | } | |
356 | ||
357 | void | |
358 | sim_io_flush_stdoutput(void) | |
359 | { | |
360 | switch (CURRENT_STDIO) { | |
361 | case DO_USE_STDIO: | |
362 | callbacks->flush_stdout (callbacks); | |
363 | break; | |
364 | case DONT_USE_STDIO: | |
365 | break; | |
366 | default: | |
367 | error("sim_io_read_stdin: unaccounted switch\n"); | |
368 | break; | |
369 | } | |
370 | } | |
371 | ||
de46f45f MG |
372 | void |
373 | sim_io_error (SIM_DESC sd, const char *fmt, ...) | |
374 | { | |
375 | va_list ap; | |
376 | va_start(ap, fmt); | |
377 | callbacks->evprintf_filtered (callbacks, fmt, ap); | |
378 | va_end(ap); | |
379 | callbacks->error (callbacks, ""); | |
380 | } | |
381 | ||
c906108c SS |
382 | /****/ |
383 | ||
384 | void * | |
385 | zalloc(long size) | |
386 | { | |
387 | void *memory = (void*)xmalloc(size); | |
388 | if (memory == NULL) | |
389 | error("xmalloc failed\n"); | |
390 | memset(memory, 0, size); | |
391 | return memory; | |
392 | } |