Commit | Line | Data |
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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #include <signal.h> /* FIXME - should be machine dependant version */ | |
22 | #include <stdarg.h> | |
23 | #include <ctype.h> | |
24 | ||
25 | #include "psim.h" | |
26 | #include "options.h" | |
27 | ||
28 | #undef printf_filtered /* blow away the mapping */ | |
29 | ||
c906108c | 30 | #include <stdlib.h> |
c906108c | 31 | #include <string.h> |
c906108c | 32 | |
2b3cc94f | 33 | #include "libiberty.h" |
c906108c | 34 | #include "bfd.h" |
df68e12b MF |
35 | #include "sim/callback.h" |
36 | #include "sim/sim.h" | |
aba6488e | 37 | #include "gdb/signals.h" |
c906108c | 38 | |
7a292a7a SS |
39 | /* Define the rate at which the simulator should poll the host |
40 | for a quit. */ | |
41 | #ifndef POLL_QUIT_INTERVAL | |
42 | #define POLL_QUIT_INTERVAL 0x20 | |
43 | #endif | |
44 | ||
45 | static int poll_quit_count = POLL_QUIT_INTERVAL; | |
c906108c SS |
46 | |
47 | /* Structures used by the simulator, for gdb just have static structures */ | |
48 | ||
91cd1042 | 49 | psim *simulator; |
c906108c SS |
50 | static device *root_device; |
51 | static host_callback *callbacks; | |
52 | ||
c906108c SS |
53 | SIM_DESC |
54 | sim_open (SIM_OPEN_KIND kind, | |
55 | host_callback *callback, | |
6b4a8935 | 56 | struct bfd *abfd, |
2e3d4f4d | 57 | char * const *argv) |
c906108c SS |
58 | { |
59 | callbacks = callback; | |
60 | ||
61 | /* Note: The simulation is not created by sim_open() because | |
62 | complete information is not yet available */ | |
63 | /* trace the call */ | |
64 | TRACE(trace_gdb, ("sim_open called\n")); | |
65 | ||
66 | if (root_device != NULL) | |
67 | sim_io_printf_filtered("Warning - re-open of simulator leaks memory\n"); | |
68 | root_device = psim_tree(); | |
69 | simulator = NULL; | |
70 | ||
dea827fc MF |
71 | if (psim_options (root_device, argv + 1, kind) == NULL) |
72 | return NULL; | |
c906108c SS |
73 | |
74 | if (ppc_trace[trace_opts]) | |
75 | print_options (); | |
76 | ||
77 | /* fudge our descriptor for now */ | |
78 | return (SIM_DESC) 1; | |
79 | } | |
80 | ||
81 | ||
82 | void | |
83 | sim_close (SIM_DESC sd, int quitting) | |
84 | { | |
85 | TRACE(trace_gdb, ("sim_close(quitting=%d) called\n", quitting)); | |
86 | if (ppc_trace[trace_print_info] && simulator != NULL) | |
87 | psim_print_info (simulator, ppc_trace[trace_print_info]); | |
88 | } | |
89 | ||
90 | ||
91 | SIM_RC | |
b2b255bd | 92 | sim_load (SIM_DESC sd, const char *prog, bfd *abfd, int from_tty) |
c906108c SS |
93 | { |
94 | TRACE(trace_gdb, ("sim_load(prog=%s, from_tty=%d) called\n", | |
95 | prog, from_tty)); | |
96 | ASSERT(prog != NULL); | |
97 | ||
98 | /* create the simulator */ | |
99 | TRACE(trace_gdb, ("sim_load() - first time, create the simulator\n")); | |
100 | simulator = psim_create(prog, root_device); | |
101 | ||
102 | /* bring in all the data section */ | |
103 | psim_init(simulator); | |
104 | ||
105 | /* get the start address */ | |
106 | if (abfd == NULL) | |
107 | { | |
108 | abfd = bfd_openr (prog, 0); | |
109 | if (abfd == NULL) | |
110 | error ("psim: can't open \"%s\": %s\n", | |
111 | prog, bfd_errmsg (bfd_get_error ())); | |
112 | if (!bfd_check_format (abfd, bfd_object)) | |
113 | { | |
114 | const char *errmsg = bfd_errmsg (bfd_get_error ()); | |
115 | bfd_close (abfd); | |
116 | error ("psim: \"%s\" is not an object file: %s\n", | |
117 | prog, errmsg); | |
118 | } | |
119 | bfd_close (abfd); | |
120 | } | |
121 | ||
122 | return SIM_RC_OK; | |
123 | } | |
124 | ||
125 | ||
126 | int | |
127 | sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length) | |
128 | { | |
129 | int result = psim_read_memory(simulator, MAX_NR_PROCESSORS, | |
130 | buf, mem, length); | |
131 | TRACE(trace_gdb, ("sim_read(mem=0x%lx, buf=0x%lx, length=%d) = %d\n", | |
132 | (long)mem, (long)buf, length, result)); | |
133 | return result; | |
134 | } | |
135 | ||
136 | ||
137 | int | |
5558e7e6 | 138 | sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length) |
c906108c SS |
139 | { |
140 | int result = psim_write_memory(simulator, MAX_NR_PROCESSORS, | |
141 | buf, mem, length, | |
142 | 1/*violate_ro*/); | |
143 | TRACE(trace_gdb, ("sim_write(mem=0x%lx, buf=0x%lx, length=%d) = %d\n", | |
144 | (long)mem, (long)buf, length, result)); | |
145 | return result; | |
146 | } | |
147 | ||
c906108c SS |
148 | void |
149 | sim_info (SIM_DESC sd, int verbose) | |
150 | { | |
151 | TRACE(trace_gdb, ("sim_info(verbose=%d) called\n", verbose)); | |
152 | psim_print_info (simulator, verbose); | |
153 | } | |
154 | ||
155 | ||
156 | SIM_RC | |
157 | sim_create_inferior (SIM_DESC sd, | |
6b4a8935 | 158 | struct bfd *abfd, |
2e3d4f4d MF |
159 | char * const *argv, |
160 | char * const *envp) | |
c906108c SS |
161 | { |
162 | unsigned_word entry_point; | |
163 | TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n", | |
164 | entry_point)); | |
165 | ||
166 | if (simulator == NULL) | |
167 | error ("No program loaded"); | |
168 | ||
169 | if (abfd != NULL) | |
170 | entry_point = bfd_get_start_address (abfd); | |
171 | else | |
172 | entry_point = 0xfff00000; /* ??? */ | |
173 | ||
174 | psim_init(simulator); | |
175 | psim_stack(simulator, argv, envp); | |
176 | ||
601cecf0 AC |
177 | ASSERT (psim_write_register(simulator, -1 /* all start at same PC */, |
178 | &entry_point, "pc", cooked_transfer) > 0); | |
c906108c SS |
179 | return SIM_RC_OK; |
180 | } | |
181 | ||
182 | ||
183 | void | |
184 | sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) | |
185 | { | |
186 | psim_status status = psim_get_status(simulator); | |
187 | ||
188 | switch (status.reason) { | |
189 | case was_continuing: | |
190 | *reason = sim_stopped; | |
191 | if (status.signal == 0) | |
a493e3e2 | 192 | *sigrc = GDB_SIGNAL_TRAP; |
c906108c SS |
193 | else |
194 | *sigrc = status.signal; | |
195 | break; | |
196 | case was_trap: | |
197 | *reason = sim_stopped; | |
a493e3e2 | 198 | *sigrc = GDB_SIGNAL_TRAP; |
c906108c SS |
199 | break; |
200 | case was_exited: | |
201 | *reason = sim_exited; | |
202 | *sigrc = status.signal; | |
203 | break; | |
204 | case was_signalled: | |
205 | *reason = sim_signalled; | |
206 | *sigrc = status.signal; | |
207 | break; | |
208 | } | |
209 | ||
210 | TRACE(trace_gdb, ("sim_stop_reason(reason=0x%lx(%ld), sigrc=0x%lx(%ld))\n", | |
211 | (long)reason, (long)*reason, (long)sigrc, (long)*sigrc)); | |
212 | } | |
213 | ||
214 | ||
215 | ||
216 | /* Run (or resume) the program. */ | |
217 | ||
218 | int | |
219 | sim_stop (SIM_DESC sd) | |
220 | { | |
221 | psim_stop (simulator); | |
222 | return 1; | |
223 | } | |
224 | ||
225 | void | |
226 | sim_resume (SIM_DESC sd, int step, int siggnal) | |
227 | { | |
228 | TRACE(trace_gdb, ("sim_resume(step=%d, siggnal=%d)\n", | |
229 | step, siggnal)); | |
230 | ||
231 | if (step) | |
232 | { | |
233 | psim_step (simulator); | |
234 | } | |
235 | else | |
236 | { | |
237 | psim_run (simulator); | |
238 | } | |
239 | } | |
240 | ||
241 | void | |
60d847df | 242 | sim_do_command (SIM_DESC sd, const char *cmd) |
c906108c SS |
243 | { |
244 | TRACE(trace_gdb, ("sim_do_commands(cmd=%s) called\n", | |
245 | cmd ? cmd : "(null)")); | |
246 | if (cmd != NULL) { | |
247 | char **argv = buildargv(cmd); | |
248 | psim_command(root_device, argv); | |
249 | freeargv(argv); | |
250 | } | |
251 | } | |
252 | ||
af9f7da7 | 253 | char ** |
3cb2ab1a | 254 | sim_complete_command (SIM_DESC sd, const char *text, const char *word) |
af9f7da7 MF |
255 | { |
256 | return NULL; | |
257 | } | |
c906108c | 258 | |
f4cfa917 MF |
259 | char * |
260 | sim_memory_map (SIM_DESC sd) | |
261 | { | |
262 | return NULL; | |
263 | } | |
264 | ||
c906108c SS |
265 | /* Polling, if required */ |
266 | ||
267 | void | |
268 | sim_io_poll_quit (void) | |
269 | { | |
7a292a7a | 270 | if (callbacks->poll_quit != NULL && poll_quit_count-- < 0) |
c906108c | 271 | { |
7a292a7a | 272 | poll_quit_count = POLL_QUIT_INTERVAL; |
c906108c SS |
273 | if (callbacks->poll_quit (callbacks)) |
274 | psim_stop (simulator); | |
275 | } | |
276 | } | |
277 | ||
278 | ||
279 | ||
280 | /* Map simulator IO operations onto the corresponding GDB I/O | |
281 | functions. | |
282 | ||
283 | NB: Only a limited subset of operations are mapped across. More | |
284 | advanced operations (such as dup or write) must either be mapped to | |
285 | one of the below calls or handled internally */ | |
286 | ||
287 | int | |
288 | sim_io_read_stdin(char *buf, | |
289 | int sizeof_buf) | |
290 | { | |
291 | switch (CURRENT_STDIO) { | |
292 | case DO_USE_STDIO: | |
293 | return callbacks->read_stdin(callbacks, buf, sizeof_buf); | |
294 | break; | |
295 | case DONT_USE_STDIO: | |
296 | return callbacks->read(callbacks, 0, buf, sizeof_buf); | |
297 | break; | |
298 | default: | |
299 | error("sim_io_read_stdin: unaccounted switch\n"); | |
300 | break; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
305 | int | |
306 | sim_io_write_stdout(const char *buf, | |
307 | int sizeof_buf) | |
308 | { | |
309 | switch (CURRENT_STDIO) { | |
310 | case DO_USE_STDIO: | |
311 | return callbacks->write_stdout(callbacks, buf, sizeof_buf); | |
312 | break; | |
313 | case DONT_USE_STDIO: | |
314 | return callbacks->write(callbacks, 1, buf, sizeof_buf); | |
315 | break; | |
316 | default: | |
317 | error("sim_io_write_stdout: unaccounted switch\n"); | |
318 | break; | |
319 | } | |
320 | return 0; | |
321 | } | |
322 | ||
323 | int | |
324 | sim_io_write_stderr(const char *buf, | |
325 | int sizeof_buf) | |
326 | { | |
327 | switch (CURRENT_STDIO) { | |
328 | case DO_USE_STDIO: | |
329 | /* NB: I think there should be an explicit write_stderr callback */ | |
330 | return callbacks->write(callbacks, 3, buf, sizeof_buf); | |
331 | break; | |
332 | case DONT_USE_STDIO: | |
333 | return callbacks->write(callbacks, 3, buf, sizeof_buf); | |
334 | break; | |
335 | default: | |
336 | error("sim_io_write_stderr: unaccounted switch\n"); | |
337 | break; | |
338 | } | |
339 | return 0; | |
340 | } | |
341 | ||
342 | ||
343 | void | |
344 | sim_io_printf_filtered(const char *fmt, | |
345 | ...) | |
346 | { | |
347 | char message[1024]; | |
348 | va_list ap; | |
349 | /* format the message */ | |
350 | va_start(ap, fmt); | |
351 | vsprintf(message, fmt, ap); | |
352 | va_end(ap); | |
353 | /* sanity check */ | |
354 | if (strlen(message) >= sizeof(message)) | |
355 | error("sim_io_printf_filtered: buffer overflow\n"); | |
356 | callbacks->printf_filtered(callbacks, "%s", message); | |
357 | } | |
358 | ||
359 | void | |
360 | sim_io_flush_stdoutput(void) | |
361 | { | |
362 | switch (CURRENT_STDIO) { | |
363 | case DO_USE_STDIO: | |
364 | callbacks->flush_stdout (callbacks); | |
365 | break; | |
366 | case DONT_USE_STDIO: | |
367 | break; | |
368 | default: | |
369 | error("sim_io_read_stdin: unaccounted switch\n"); | |
370 | break; | |
371 | } | |
372 | } | |
373 | ||
de46f45f MG |
374 | void |
375 | sim_io_error (SIM_DESC sd, const char *fmt, ...) | |
376 | { | |
377 | va_list ap; | |
378 | va_start(ap, fmt); | |
379 | callbacks->evprintf_filtered (callbacks, fmt, ap); | |
380 | va_end(ap); | |
381 | callbacks->error (callbacks, ""); | |
382 | } | |
383 | ||
c906108c SS |
384 | /****/ |
385 | ||
625ce09c JB |
386 | void NORETURN |
387 | error (const char *msg, ...) | |
388 | { | |
389 | va_list ap; | |
390 | va_start(ap, msg); | |
391 | callbacks->evprintf_filtered (callbacks, msg, ap); | |
392 | va_end(ap); | |
393 | callbacks->error (callbacks, ""); | |
394 | } | |
395 | ||
c906108c SS |
396 | void * |
397 | zalloc(long size) | |
398 | { | |
399 | void *memory = (void*)xmalloc(size); | |
400 | if (memory == NULL) | |
401 | error("xmalloc failed\n"); | |
402 | memset(memory, 0, size); | |
403 | return memory; | |
404 | } |