1 |
/* |
2 |
* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
3 |
* |
4 |
* Redistribution and use in source and binary forms, with or without |
5 |
* modification, are permitted provided that the following conditions are met: |
6 |
* |
7 |
* 1. Redistributions of source code must retain the above copyright |
8 |
* notice, this list of conditions and the following disclaimer. |
9 |
* 2. Redistributions in binary form must reproduce the above copyright |
10 |
* notice, this list of conditions and the following disclaimer in the |
11 |
* documentation and/or other materials provided with the distribution. |
12 |
* 3. The name of the author may not be used to endorse or promote products |
13 |
* derived from this software without specific prior written permission. |
14 |
* |
15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
16 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
19 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
20 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
21 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
22 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
23 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
24 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
25 |
* SUCH DAMAGE. |
26 |
* |
27 |
* |
28 |
* $Id: debugger.c,v 1.123 2005/10/26 14:37:01 debug Exp $ |
29 |
* |
30 |
* Single-step debugger. |
31 |
* |
32 |
* |
33 |
* TODO: |
34 |
* |
35 |
* This entire module is very much non-reentrant. :-/ |
36 |
* |
37 |
* Add more functionality that already exists elsewhere in the emulator. |
38 |
* |
39 |
* More generic expression evaluator (for example + - * / between multiple |
40 |
* terms), including _TAB COMPLETION_ of symbols and register names! |
41 |
* |
42 |
* Nicer looking output of register dumps, floating point registers, |
43 |
* etc. Warn about weird/invalid register contents. |
44 |
* |
45 |
* Ctrl-C doesn't enter the debugger on some OSes (HP-UX?)... |
46 |
* |
47 |
* Many other TODOs. |
48 |
*/ |
49 |
|
50 |
#include <ctype.h> |
51 |
#include <signal.h> |
52 |
#include <stdio.h> |
53 |
#include <stdlib.h> |
54 |
#include <string.h> |
55 |
#include <unistd.h> |
56 |
|
57 |
#include "bintrans.h" |
58 |
#include "console.h" |
59 |
#include "cpu.h" |
60 |
#include "device.h" |
61 |
#include "debugger.h" |
62 |
#include "diskimage.h" |
63 |
#include "emul.h" |
64 |
#include "machine.h" |
65 |
#include "memory.h" |
66 |
#include "misc.h" |
67 |
#include "net.h" |
68 |
#include "x11.h" |
69 |
|
70 |
|
71 |
extern int extra_argc; |
72 |
extern char **extra_argv; |
73 |
|
74 |
extern int quiet_mode; |
75 |
|
76 |
|
77 |
/* |
78 |
* Global debugger variables: |
79 |
*/ |
80 |
|
81 |
volatile int single_step = 0; |
82 |
int force_debugger_at_exit = 0; |
83 |
int show_opcode_statistics = 0; |
84 |
|
85 |
volatile int single_step_breakpoint = 0; |
86 |
int debugger_n_steps_left_before_interaction = 0; |
87 |
|
88 |
int old_instruction_trace = 0; |
89 |
int old_quiet_mode = 0; |
90 |
int old_show_trace_tree = 0; |
91 |
|
92 |
|
93 |
/* |
94 |
* Private (global) debugger variables: |
95 |
*/ |
96 |
|
97 |
static volatile int ctrl_c; |
98 |
|
99 |
static int debugger_n_emuls; |
100 |
static struct emul **debugger_emuls; |
101 |
static struct emul *debugger_emul; |
102 |
static struct machine *debugger_machine; |
103 |
|
104 |
static int exit_debugger; |
105 |
|
106 |
#define MAX_CMD_BUFLEN 72 |
107 |
#define N_PREVIOUS_CMDS 150 |
108 |
static char *last_cmd[N_PREVIOUS_CMDS]; |
109 |
static int last_cmd_index; |
110 |
|
111 |
static char repeat_cmd[MAX_CMD_BUFLEN]; |
112 |
|
113 |
#define MAGIC_UNTOUCHED 0x98ca76c2ffcc0011ULL |
114 |
|
115 |
static uint64_t last_dump_addr = MAGIC_UNTOUCHED; |
116 |
static uint64_t last_unasm_addr = MAGIC_UNTOUCHED; |
117 |
|
118 |
|
119 |
/* |
120 |
* debugger_readchar(): |
121 |
* |
122 |
* TODO: This uses up 100% CPU, maybe that isn't too good. The usleep() call |
123 |
* might make it a tiny bit nicer on other running processes, but it |
124 |
* is still very ugly. |
125 |
*/ |
126 |
char debugger_readchar(void) |
127 |
{ |
128 |
int ch; |
129 |
while ((ch = console_readchar(MAIN_CONSOLE)) < 0) { |
130 |
x11_check_event(debugger_emuls, debugger_n_emuls); |
131 |
usleep(1); |
132 |
} |
133 |
return ch; |
134 |
} |
135 |
|
136 |
|
137 |
/* |
138 |
* debugger_activate(): |
139 |
* |
140 |
* This is a signal handler for CTRL-C. It shouldn't be called directly, |
141 |
* but setup code in emul.c sets the CTRL-C signal handler to use this |
142 |
* function. |
143 |
*/ |
144 |
void debugger_activate(int x) |
145 |
{ |
146 |
ctrl_c = 1; |
147 |
|
148 |
if (single_step) { |
149 |
/* Already in the debugger. Do nothing. */ |
150 |
int i; |
151 |
for (i=0; i<MAX_CMD_BUFLEN; i++) |
152 |
console_makeavail(MAIN_CONSOLE, '\b'); |
153 |
console_makeavail(MAIN_CONSOLE, ' '); |
154 |
console_makeavail(MAIN_CONSOLE, '\n'); |
155 |
printf("^C"); |
156 |
fflush(stdout); |
157 |
} else { |
158 |
/* Enter the single step debugger. */ |
159 |
single_step = 1; |
160 |
|
161 |
/* Discard any chars in the input queue: */ |
162 |
while (console_charavail(MAIN_CONSOLE)) |
163 |
console_readchar(MAIN_CONSOLE); |
164 |
} |
165 |
|
166 |
/* Clear the repeat-command buffer: */ |
167 |
repeat_cmd[0] = '\0'; |
168 |
|
169 |
/* Reactivate the signal handler: */ |
170 |
signal(SIGINT, debugger_activate); |
171 |
} |
172 |
|
173 |
|
174 |
/* |
175 |
* debugger_parse_name(): |
176 |
* |
177 |
* This function reads a string, and tries to match it to a register name, |
178 |
* a symbol, or treat it as a decimal numeric value. |
179 |
* |
180 |
* Some examples: |
181 |
* |
182 |
* "0x7fff1234" ==> numeric value (hex, in this case) |
183 |
* "pc", "r5", "hi", "t4" ==> register (CPU dependent) |
184 |
* "memcpy+64" ==> symbol (plus offset) |
185 |
* |
186 |
* Register names can be preceeded by "x:" where x is the CPU number. (CPU |
187 |
* 0 is assumed by default.) |
188 |
* |
189 |
* To force detection of different types, a character can be added in front of |
190 |
* the name: "$" for numeric values, "%" for registers, and "@" for symbols. |
191 |
* |
192 |
* Return value is: |
193 |
* |
194 |
* NAME_PARSE_NOMATCH no match |
195 |
* NAME_PARSE_MULTIPLE multiple matches |
196 |
* |
197 |
* or one of these (and then *valuep is read or written, depending on |
198 |
* the writeflag): |
199 |
* |
200 |
* NAME_PARSE_REGISTER a register |
201 |
* NAME_PARSE_NUMBER a hex number |
202 |
* NAME_PARSE_SYMBOL a symbol |
203 |
*/ |
204 |
#define NAME_PARSE_NOMATCH 0 |
205 |
#define NAME_PARSE_MULTIPLE 1 |
206 |
#define NAME_PARSE_REGISTER 2 |
207 |
#define NAME_PARSE_NUMBER 3 |
208 |
#define NAME_PARSE_SYMBOL 4 |
209 |
static int debugger_parse_name(struct machine *m, char *name, int writeflag, |
210 |
uint64_t *valuep) |
211 |
{ |
212 |
int match_register = 0, match_symbol = 0, match_numeric = 0; |
213 |
int skip_register, skip_numeric, skip_symbol; |
214 |
|
215 |
if (m == NULL || name == NULL) { |
216 |
fprintf(stderr, "debugger_parse_name(): NULL ptr\n"); |
217 |
exit(1); |
218 |
} |
219 |
|
220 |
/* Warn about non-signextended values: */ |
221 |
if (writeflag) { |
222 |
if (m->cpus[0]->is_32bit) { |
223 |
/* Automagically sign-extend. TODO: Is this good? */ |
224 |
if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL) |
225 |
(*valuep) |= 0xffffffff00000000ULL; |
226 |
} else { |
227 |
if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL) |
228 |
printf("WARNING: The value is not sign-extende" |
229 |
"d. Is this what you intended?\n"); |
230 |
} |
231 |
} |
232 |
|
233 |
skip_register = name[0] == '$' || name[0] == '@'; |
234 |
skip_numeric = name[0] == '%' || name[0] == '@'; |
235 |
skip_symbol = name[0] == '$' || name[0] == '%'; |
236 |
|
237 |
/* Check for a register match: */ |
238 |
if (!skip_register && strlen(name) >= 1) |
239 |
cpu_register_match(m, name, writeflag, valuep, |
240 |
&match_register); |
241 |
|
242 |
/* Check for a number match: */ |
243 |
if (!skip_numeric && isdigit((int)name[0])) { |
244 |
uint64_t x; |
245 |
x = strtoull(name, NULL, 0); |
246 |
if (writeflag) { |
247 |
printf("You cannot assign like that.\n"); |
248 |
} else |
249 |
*valuep = x; |
250 |
match_numeric = 1; |
251 |
} |
252 |
|
253 |
/* Check for a symbol match: */ |
254 |
if (!skip_symbol) { |
255 |
int res; |
256 |
char *p, *sn; |
257 |
uint64_t newaddr, ofs = 0; |
258 |
|
259 |
sn = malloc(strlen(name) + 1); |
260 |
if (sn == NULL) { |
261 |
fprintf(stderr, "out of memory in debugger\n"); |
262 |
exit(1); |
263 |
} |
264 |
strlcpy(sn, name, strlen(name)+1); |
265 |
|
266 |
/* Is there a '+' in there? Then treat that as an offset: */ |
267 |
p = strchr(sn, '+'); |
268 |
if (p != NULL) { |
269 |
*p = '\0'; |
270 |
ofs = strtoull(p+1, NULL, 0); |
271 |
} |
272 |
|
273 |
res = get_symbol_addr(&m->symbol_context, sn, &newaddr); |
274 |
if (res) { |
275 |
if (writeflag) { |
276 |
printf("You cannot assign like that.\n"); |
277 |
} else |
278 |
*valuep = newaddr + ofs; |
279 |
match_symbol = 1; |
280 |
} |
281 |
|
282 |
free(sn); |
283 |
} |
284 |
|
285 |
if (match_register + match_symbol + match_numeric > 1) |
286 |
return NAME_PARSE_MULTIPLE; |
287 |
|
288 |
if (match_register) |
289 |
return NAME_PARSE_REGISTER; |
290 |
if (match_numeric) |
291 |
return NAME_PARSE_NUMBER; |
292 |
if (match_symbol) |
293 |
return NAME_PARSE_SYMBOL; |
294 |
|
295 |
return NAME_PARSE_NOMATCH; |
296 |
} |
297 |
|
298 |
|
299 |
/* |
300 |
* show_breakpoint(): |
301 |
*/ |
302 |
static void show_breakpoint(struct machine *m, int i) |
303 |
{ |
304 |
printf("%3i: 0x", i); |
305 |
if (m->cpus[0]->is_32bit) |
306 |
printf("%08x", (int)m->breakpoint_addr[i]); |
307 |
else |
308 |
printf("%016llx", (long long)m->breakpoint_addr[i]); |
309 |
if (m->breakpoint_string[i] != NULL) |
310 |
printf(" (%s)", m->breakpoint_string[i]); |
311 |
if (m->breakpoint_flags[i]) |
312 |
printf(": flags=0x%x", m->breakpoint_flags[i]); |
313 |
printf("\n"); |
314 |
} |
315 |
|
316 |
|
317 |
/****************************************************************************/ |
318 |
|
319 |
|
320 |
/* |
321 |
* debugger_cmd_breakpoint(): |
322 |
* |
323 |
* TODO: automagic "expansion" for the subcommand names (s => show). |
324 |
*/ |
325 |
static void debugger_cmd_breakpoint(struct machine *m, char *cmd_line) |
326 |
{ |
327 |
int i, res; |
328 |
|
329 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
330 |
cmd_line ++; |
331 |
|
332 |
if (cmd_line[0] == '\0') { |
333 |
printf("syntax: breakpoint subcmd [args...]\n"); |
334 |
printf("Available subcmds (and args) are:\n"); |
335 |
printf(" add addr add a breakpoint for address addr\n"); |
336 |
printf(" delete x delete breakpoint nr x\n"); |
337 |
printf(" show show current breakpoints\n"); |
338 |
return; |
339 |
} |
340 |
|
341 |
if (strcmp(cmd_line, "show") == 0) { |
342 |
if (m->n_breakpoints == 0) |
343 |
printf("No breakpoints set.\n"); |
344 |
for (i=0; i<m->n_breakpoints; i++) |
345 |
show_breakpoint(m, i); |
346 |
return; |
347 |
} |
348 |
|
349 |
if (strncmp(cmd_line, "delete ", 7) == 0) { |
350 |
int x = atoi(cmd_line + 7); |
351 |
|
352 |
if (m->n_breakpoints == 0) { |
353 |
printf("No breakpoints set.\n"); |
354 |
return; |
355 |
} |
356 |
if (x < 0 || x >= m->n_breakpoints) { |
357 |
printf("Invalid breakpoint nr %i. Use 'breakpoint " |
358 |
"show' to see the current breakpoints.\n", x); |
359 |
return; |
360 |
} |
361 |
|
362 |
free(m->breakpoint_string[x]); |
363 |
|
364 |
for (i=x; i<m->n_breakpoints-1; i++) { |
365 |
m->breakpoint_addr[i] = m->breakpoint_addr[i+1]; |
366 |
m->breakpoint_string[i] = m->breakpoint_string[i+1]; |
367 |
m->breakpoint_flags[i] = m->breakpoint_flags[i+1]; |
368 |
} |
369 |
m->n_breakpoints --; |
370 |
|
371 |
/* Clear translations: */ |
372 |
for (i=0; i<m->ncpus; i++) |
373 |
if (m->cpus[i]->translation_cache != NULL) |
374 |
cpu_create_or_reset_tc(m->cpus[i]); |
375 |
return; |
376 |
} |
377 |
|
378 |
if (strncmp(cmd_line, "add ", 4) == 0) { |
379 |
uint64_t tmp; |
380 |
size_t breakpoint_buf_len; |
381 |
|
382 |
if (m->n_breakpoints >= MAX_BREAKPOINTS) { |
383 |
printf("Too many breakpoints. (You need to recompile" |
384 |
" gxemul to increase this. Max = %i.)\n", |
385 |
MAX_BREAKPOINTS); |
386 |
return; |
387 |
} |
388 |
|
389 |
i = m->n_breakpoints; |
390 |
|
391 |
res = debugger_parse_name(m, cmd_line + 4, 0, &tmp); |
392 |
if (!res) { |
393 |
printf("Couldn't parse '%s'\n", cmd_line + 4); |
394 |
return; |
395 |
} |
396 |
|
397 |
breakpoint_buf_len = strlen(cmd_line+4) + 1; |
398 |
m->breakpoint_string[i] = malloc(breakpoint_buf_len); |
399 |
if (m->breakpoint_string[i] == NULL) { |
400 |
printf("out of memory in debugger_cmd_breakpoint()\n"); |
401 |
exit(1); |
402 |
} |
403 |
strlcpy(m->breakpoint_string[i], cmd_line+4, |
404 |
breakpoint_buf_len); |
405 |
m->breakpoint_addr[i] = tmp; |
406 |
m->breakpoint_flags[i] = 0; |
407 |
|
408 |
m->n_breakpoints ++; |
409 |
show_breakpoint(m, i); |
410 |
|
411 |
/* Clear translations: */ |
412 |
for (i=0; i<m->ncpus; i++) |
413 |
if (m->cpus[i]->translation_cache != NULL) |
414 |
cpu_create_or_reset_tc(m->cpus[i]); |
415 |
return; |
416 |
} |
417 |
|
418 |
printf("Unknown breakpoint subcommand.\n"); |
419 |
} |
420 |
|
421 |
|
422 |
/* |
423 |
* debugger_cmd_bintrans(): |
424 |
*/ |
425 |
static void debugger_cmd_bintrans(struct machine *m, char *cmd_line) |
426 |
{ |
427 |
int i; |
428 |
|
429 |
if (*cmd_line == '\0') |
430 |
goto printstate; |
431 |
|
432 |
if (!m->bintrans_enabled_from_start) { |
433 |
printf("You must have enabled bintrans from the start of the " |
434 |
"simulation.\nIt is not possible to turn on afterwards.\n"); |
435 |
return; |
436 |
} |
437 |
|
438 |
while (*cmd_line == ' ') |
439 |
cmd_line++; |
440 |
|
441 |
/* Note: len 3 and 4, to include the NUL char. */ |
442 |
if (strncasecmp(cmd_line, "on", 3) == 0) { |
443 |
m->bintrans_enable = 1; |
444 |
for (i=0; i<m->ncpus; i++) |
445 |
bintrans_restart(m->cpus[i]); |
446 |
} else if (strncasecmp(cmd_line, "off", 4) == 0) |
447 |
m->bintrans_enable = 0; |
448 |
else |
449 |
printf("syntax: bintrans [on|off]\n"); |
450 |
|
451 |
printstate: |
452 |
printf("bintrans is now %s%s\n", |
453 |
m->bintrans_enable? "ENABLED" : "disabled", |
454 |
m->old_bintrans_enable? " (using the OLD bintrans system)" : ""); |
455 |
} |
456 |
|
457 |
|
458 |
/* |
459 |
* debugger_cmd_continue(): |
460 |
*/ |
461 |
static void debugger_cmd_continue(struct machine *m, char *cmd_line) |
462 |
{ |
463 |
if (*cmd_line) { |
464 |
printf("syntax: continue\n"); |
465 |
return; |
466 |
} |
467 |
|
468 |
exit_debugger = 1; |
469 |
} |
470 |
|
471 |
|
472 |
/* |
473 |
* debugger_cmd_device(): |
474 |
*/ |
475 |
static void debugger_cmd_device(struct machine *m, char *cmd_line) |
476 |
{ |
477 |
int i, j; |
478 |
struct memory *mem; |
479 |
struct cpu *c; |
480 |
|
481 |
if (cmd_line[0] == '\0') |
482 |
goto return_help; |
483 |
|
484 |
if (m->cpus == NULL) { |
485 |
printf("No cpus (?)\n"); |
486 |
return; |
487 |
} |
488 |
c = m->cpus[m->bootstrap_cpu]; |
489 |
if (c == NULL) { |
490 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
491 |
return; |
492 |
} |
493 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
494 |
|
495 |
if (m->cpus == NULL) { |
496 |
printf("No cpus (?)\n"); |
497 |
return; |
498 |
} |
499 |
c = m->cpus[m->bootstrap_cpu]; |
500 |
if (c == NULL) { |
501 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
502 |
return; |
503 |
} |
504 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
505 |
|
506 |
if (strcmp(cmd_line, "all") == 0) { |
507 |
device_dumplist(); |
508 |
} else if (strncmp(cmd_line, "add ", 4) == 0) { |
509 |
device_add(m, cmd_line+4); |
510 |
} else if (strncmp(cmd_line, "remove ", 7) == 0) { |
511 |
i = atoi(cmd_line + 7); |
512 |
if (i==0 && cmd_line[7]!='0') { |
513 |
printf("Weird device number. Use 'device list'.\n"); |
514 |
} else |
515 |
memory_device_remove(m->memory, i); |
516 |
} else if (strncmp(cmd_line, "state ", 6) == 0) { |
517 |
i = atoi(cmd_line + 6); |
518 |
if (i < 0 || i >= mem->n_mmapped_devices) { |
519 |
printf("No devices with that id.\n"); |
520 |
return; |
521 |
} |
522 |
|
523 |
if (mem->dev_f_state[i] == NULL) { |
524 |
printf("No state function has been implemented yet " |
525 |
"for that device type.\n"); |
526 |
return; |
527 |
} |
528 |
|
529 |
for (j=0; ; j++) { |
530 |
int type; |
531 |
char *name; |
532 |
void *data; |
533 |
size_t len; |
534 |
int res = mem->dev_f_state[i](c, mem, |
535 |
mem->dev_extra[i], 0, j, &type, &name, &data, &len); |
536 |
if (!res) |
537 |
break; |
538 |
printf("%2i:%30s = (", j, name); |
539 |
switch (type) { |
540 |
case DEVICE_STATE_TYPE_INT: |
541 |
printf("int) %i", *((int *)data)); |
542 |
break; |
543 |
default: |
544 |
printf("unknown)"); |
545 |
} |
546 |
printf("\n"); |
547 |
} |
548 |
} else if (strcmp(cmd_line, "list") == 0) { |
549 |
if (mem->n_mmapped_devices == 0) |
550 |
printf("No memory-mapped devices in this machine.\n"); |
551 |
|
552 |
for (i=0; i<mem->n_mmapped_devices; i++) { |
553 |
printf("%2i: %25s @ 0x%011llx, len = 0x%llx", |
554 |
i, mem->dev_name[i], |
555 |
(long long)mem->dev_baseaddr[i], |
556 |
(long long)mem->dev_length[i]); |
557 |
if (mem->dev_flags[i]) { |
558 |
printf(" ("); |
559 |
if (mem->dev_flags[i] & MEM_DYNTRANS_OK) |
560 |
printf("DYNTRANS R"); |
561 |
if (mem->dev_flags[i] & MEM_DYNTRANS_WRITE_OK) |
562 |
printf("+W"); |
563 |
printf(")"); |
564 |
} |
565 |
printf("\n"); |
566 |
} |
567 |
} else |
568 |
goto return_help; |
569 |
|
570 |
return; |
571 |
|
572 |
return_help: |
573 |
printf("syntax: devices cmd [...]\n"); |
574 |
printf("Available cmds are:\n"); |
575 |
printf(" add name_and_params add a device to the current " |
576 |
"machine\n"); |
577 |
printf(" all list all registered devices\n"); |
578 |
printf(" list list memory-mapped devices in the" |
579 |
" current machine\n"); |
580 |
printf(" remove x remove device nr x from the " |
581 |
"current machine\n"); |
582 |
printf(" state x show state of device nr x in" |
583 |
" the current machine\n"); |
584 |
} |
585 |
|
586 |
|
587 |
/* |
588 |
* debugger_cmd_dump(): |
589 |
* |
590 |
* Dump emulated memory in hex and ASCII. |
591 |
* |
592 |
* syntax: dump [addr [endaddr]] |
593 |
*/ |
594 |
static void debugger_cmd_dump(struct machine *m, char *cmd_line) |
595 |
{ |
596 |
uint64_t addr, addr_start, addr_end; |
597 |
struct cpu *c; |
598 |
struct memory *mem; |
599 |
char *p = NULL; |
600 |
int x, r; |
601 |
|
602 |
if (cmd_line[0] != '\0') { |
603 |
uint64_t tmp; |
604 |
char *tmps = strdup(cmd_line); |
605 |
|
606 |
/* addr: */ |
607 |
p = strchr(tmps, ' '); |
608 |
if (p != NULL) |
609 |
*p = '\0'; |
610 |
r = debugger_parse_name(m, tmps, 0, &tmp); |
611 |
free(tmps); |
612 |
|
613 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
614 |
printf("Unparsable address: %s\n", cmd_line); |
615 |
return; |
616 |
} else { |
617 |
last_dump_addr = tmp; |
618 |
} |
619 |
|
620 |
p = strchr(cmd_line, ' '); |
621 |
} |
622 |
|
623 |
addr_start = last_dump_addr; |
624 |
|
625 |
if (addr_start == MAGIC_UNTOUCHED) { |
626 |
uint64_t tmp; |
627 |
int match_register = 0; |
628 |
cpu_register_match(m, "pc", 0, &tmp, &match_register); |
629 |
if (match_register) { |
630 |
addr_start = tmp; |
631 |
} else { |
632 |
printf("No starting address.\n"); |
633 |
return; |
634 |
} |
635 |
} |
636 |
|
637 |
addr_end = addr_start + 16 * 16; |
638 |
|
639 |
/* endaddr: */ |
640 |
if (p != NULL) { |
641 |
while (*p == ' ' && *p) |
642 |
p++; |
643 |
r = debugger_parse_name(m, p, 0, &addr_end); |
644 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
645 |
printf("Unparsable address: %s\n", cmd_line); |
646 |
return; |
647 |
} |
648 |
} |
649 |
|
650 |
if (m->cpus == NULL) { |
651 |
printf("No cpus (?)\n"); |
652 |
return; |
653 |
} |
654 |
c = m->cpus[m->bootstrap_cpu]; |
655 |
if (c == NULL) { |
656 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
657 |
return; |
658 |
} |
659 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
660 |
|
661 |
addr = addr_start & ~0xf; |
662 |
|
663 |
ctrl_c = 0; |
664 |
|
665 |
while (addr < addr_end) { |
666 |
unsigned char buf[16]; |
667 |
memset(buf, 0, sizeof(buf)); |
668 |
r = c->memory_rw(c, mem, addr, &buf[0], sizeof(buf), |
669 |
MEM_READ, CACHE_NONE | NO_EXCEPTIONS); |
670 |
|
671 |
if (c->is_32bit) |
672 |
printf("0x%08x ", (int)addr); |
673 |
else |
674 |
printf("0x%016llx ", (long long)addr); |
675 |
|
676 |
if (r == MEMORY_ACCESS_FAILED) |
677 |
printf("(memory access failed)\n"); |
678 |
else { |
679 |
for (x=0; x<16; x++) { |
680 |
if (addr + x >= addr_start && |
681 |
addr + x < addr_end) |
682 |
printf("%02x%s", buf[x], |
683 |
(x&3)==3? " " : ""); |
684 |
else |
685 |
printf(" %s", (x&3)==3? " " : ""); |
686 |
} |
687 |
printf(" "); |
688 |
for (x=0; x<16; x++) { |
689 |
if (addr + x >= addr_start && |
690 |
addr + x < addr_end) |
691 |
printf("%c", (buf[x]>=' ' && |
692 |
buf[x]<127)? buf[x] : '.'); |
693 |
else |
694 |
printf(" "); |
695 |
} |
696 |
printf("\n"); |
697 |
} |
698 |
|
699 |
if (ctrl_c) |
700 |
return; |
701 |
|
702 |
addr += sizeof(buf); |
703 |
} |
704 |
|
705 |
last_dump_addr = addr_end; |
706 |
|
707 |
strlcpy(repeat_cmd, "dump", MAX_CMD_BUFLEN); |
708 |
} |
709 |
|
710 |
|
711 |
/* |
712 |
* debugger_cmd_emuls(): |
713 |
* |
714 |
* Dump info about all current emuls. |
715 |
*/ |
716 |
static void debugger_cmd_emuls(struct machine *m, char *cmd_line) |
717 |
{ |
718 |
int i, iadd = 4; |
719 |
|
720 |
if (*cmd_line) { |
721 |
printf("syntax: emuls\n"); |
722 |
return; |
723 |
} |
724 |
|
725 |
for (i=0; i<debugger_n_emuls; i++) { |
726 |
struct emul *e = debugger_emuls[i]; |
727 |
|
728 |
if (e == NULL) |
729 |
continue; |
730 |
|
731 |
debug("emulation %i: \"%s\"\n", i, |
732 |
e->name == NULL? "(no name)" : e->name); |
733 |
debug_indentation(iadd); |
734 |
|
735 |
emul_dumpinfo(e); |
736 |
|
737 |
debug_indentation(-iadd); |
738 |
} |
739 |
} |
740 |
|
741 |
|
742 |
/* |
743 |
* debugger_cmd_focus(): |
744 |
* |
745 |
* Changes focus to specific machine (in a specific emulation). |
746 |
*/ |
747 |
static void debugger_cmd_focus(struct machine *m, char *cmd_line) |
748 |
{ |
749 |
int x = -1, y = -1; |
750 |
char *p; |
751 |
|
752 |
if (!cmd_line[0]) { |
753 |
printf("syntax: focus x[,y]\n"); |
754 |
printf("where x and y are integers as reported by the" |
755 |
" 'emuls' command\n"); |
756 |
goto print_current_focus_and_return; |
757 |
} |
758 |
|
759 |
x = atoi(cmd_line); |
760 |
p = strchr(cmd_line, ','); |
761 |
if (p == cmd_line) { |
762 |
printf("No machine number specified?\n"); |
763 |
printf("syntax: focus x[,y]\n"); |
764 |
return; |
765 |
} |
766 |
|
767 |
if (p != NULL) |
768 |
y = atoi(p + 1); |
769 |
|
770 |
if (y != -1) { |
771 |
/* Change emul: */ |
772 |
if (y < 0 || y >= debugger_n_emuls) { |
773 |
printf("Invalid emul number: %i\n", y); |
774 |
return; |
775 |
} |
776 |
|
777 |
debugger_emul = debugger_emuls[y]; |
778 |
|
779 |
/* This is just in case the machine change below fails... */ |
780 |
debugger_machine = debugger_emul->machines[0]; |
781 |
} |
782 |
|
783 |
/* Change machine: */ |
784 |
if (x < 0 || x >= debugger_emul->n_machines) { |
785 |
printf("Invalid machine number: %i\n", x); |
786 |
return; |
787 |
} |
788 |
|
789 |
debugger_machine = debugger_emul->machines[x]; |
790 |
|
791 |
print_current_focus_and_return: |
792 |
printf("current emul: \"%s\"\n", debugger_emul->name == NULL? |
793 |
"(no name)" : debugger_emul->name); |
794 |
printf("current machine: \"%s\"\n", debugger_machine->name == NULL? |
795 |
"(no name)" : debugger_machine->name); |
796 |
} |
797 |
|
798 |
|
799 |
/* This is defined below. */ |
800 |
static void debugger_cmd_help(struct machine *m, char *cmd_line); |
801 |
|
802 |
|
803 |
/* |
804 |
* debugger_cmd_itrace(): |
805 |
*/ |
806 |
static void debugger_cmd_itrace(struct machine *m, char *cmd_line) |
807 |
{ |
808 |
if (*cmd_line) { |
809 |
printf("syntax: itrace\n"); |
810 |
return; |
811 |
} |
812 |
|
813 |
old_instruction_trace = 1 - old_instruction_trace; |
814 |
printf("instruction_trace = %s\n", old_instruction_trace? "ON":"OFF"); |
815 |
/* TODO: how to preserve quiet_mode? */ |
816 |
old_quiet_mode = 0; |
817 |
printf("quiet_mode = %s\n", old_quiet_mode? "ON" : "OFF"); |
818 |
} |
819 |
|
820 |
|
821 |
/* |
822 |
* debugger_cmd_lookup(): |
823 |
*/ |
824 |
static void debugger_cmd_lookup(struct machine *m, char *cmd_line) |
825 |
{ |
826 |
uint64_t addr; |
827 |
int res; |
828 |
char *symbol; |
829 |
uint64_t offset; |
830 |
|
831 |
if (cmd_line[0] == '\0') { |
832 |
printf("syntax: lookup name|addr\n"); |
833 |
return; |
834 |
|
835 |
} |
836 |
|
837 |
/* Addresses never need to be given in decimal form anyway, |
838 |
so assuming hex here will be ok. */ |
839 |
addr = strtoull(cmd_line, NULL, 16); |
840 |
|
841 |
if (addr == 0) { |
842 |
uint64_t newaddr; |
843 |
res = get_symbol_addr(&m->symbol_context, |
844 |
cmd_line, &newaddr); |
845 |
if (!res) { |
846 |
printf("lookup for '%s' failed\n", cmd_line); |
847 |
return; |
848 |
} |
849 |
printf("%s = 0x", cmd_line); |
850 |
if (m->cpus[0]->is_32bit) |
851 |
printf("%08x\n", (int)newaddr); |
852 |
else |
853 |
printf("%016llx\n", (long long)newaddr); |
854 |
return; |
855 |
} |
856 |
|
857 |
symbol = get_symbol_name(&m->symbol_context, addr, &offset); |
858 |
|
859 |
if (symbol != NULL) { |
860 |
if (m->cpus[0]->is_32bit) |
861 |
printf("0x%08x", (int)addr); |
862 |
else |
863 |
printf("0x%016llx", (long long)addr); |
864 |
printf(" = %s\n", symbol); |
865 |
} else |
866 |
printf("lookup for '%s' failed\n", cmd_line); |
867 |
} |
868 |
|
869 |
|
870 |
/* |
871 |
* debugger_cmd_machine(): |
872 |
* |
873 |
* Dump info about the currently focused machine. |
874 |
*/ |
875 |
static void debugger_cmd_machine(struct machine *m, char *cmd_line) |
876 |
{ |
877 |
int iadd = 4; |
878 |
|
879 |
if (*cmd_line) { |
880 |
printf("syntax: machine\n"); |
881 |
return; |
882 |
} |
883 |
|
884 |
debug("machine \"%s\":\n", m->name); |
885 |
debug_indentation(iadd); |
886 |
machine_dumpinfo(m); |
887 |
debug_indentation(-iadd); |
888 |
} |
889 |
|
890 |
|
891 |
/* |
892 |
* debugger_cmd_ninstrs(): |
893 |
*/ |
894 |
static void debugger_cmd_ninstrs(struct machine *m, char *cmd_line) |
895 |
{ |
896 |
int toggle = 1; |
897 |
int previous_mode = m->show_nr_of_instructions; |
898 |
|
899 |
if (cmd_line[0] != '\0') { |
900 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
901 |
cmd_line ++; |
902 |
switch (cmd_line[0]) { |
903 |
case '0': |
904 |
toggle = 0; |
905 |
m->show_nr_of_instructions = 0; |
906 |
break; |
907 |
case '1': |
908 |
toggle = 0; |
909 |
m->show_nr_of_instructions = 1; |
910 |
break; |
911 |
case 'o': |
912 |
case 'O': |
913 |
toggle = 0; |
914 |
switch (cmd_line[1]) { |
915 |
case 'n': |
916 |
case 'N': |
917 |
m->show_nr_of_instructions = 1; |
918 |
break; |
919 |
default: |
920 |
m->show_nr_of_instructions = 0; |
921 |
} |
922 |
break; |
923 |
default: |
924 |
printf("syntax: trace [on|off]\n"); |
925 |
return; |
926 |
} |
927 |
} |
928 |
|
929 |
if (toggle) |
930 |
m->show_nr_of_instructions = !m->show_nr_of_instructions; |
931 |
|
932 |
printf("show_nr_of_instructions = %s", |
933 |
m->show_nr_of_instructions? "ON" : "OFF"); |
934 |
if (m->show_nr_of_instructions != previous_mode) |
935 |
printf(" (was: %s)", previous_mode? "ON" : "OFF"); |
936 |
printf("\n"); |
937 |
} |
938 |
|
939 |
|
940 |
/* |
941 |
* debugger_cmd_opcodestats(): |
942 |
*/ |
943 |
static void debugger_cmd_opcodestats(struct machine *m, char *cmd_line) |
944 |
{ |
945 |
if (*cmd_line) { |
946 |
printf("syntax: opcodestats\n"); |
947 |
return; |
948 |
} |
949 |
|
950 |
if (!show_opcode_statistics) { |
951 |
printf("You need to start the emulator " |
952 |
"with -s, if you want to gather statistics.\n"); |
953 |
} else |
954 |
cpu_show_full_statistics(m); |
955 |
} |
956 |
|
957 |
|
958 |
/* |
959 |
* debugger_cmd_pause(): |
960 |
*/ |
961 |
static void debugger_cmd_pause(struct machine *m, char *cmd_line) |
962 |
{ |
963 |
int cpuid = -1; |
964 |
|
965 |
if (cmd_line[0] != '\0') |
966 |
cpuid = atoi(cmd_line); |
967 |
else { |
968 |
printf("syntax: pause cpuid\n"); |
969 |
return; |
970 |
} |
971 |
|
972 |
if (cpuid < 0 || cpuid >= m->ncpus) { |
973 |
printf("cpu%i doesn't exist.\n", cpuid); |
974 |
return; |
975 |
} |
976 |
|
977 |
m->cpus[cpuid]->running ^= 1; |
978 |
|
979 |
printf("cpu%i (%s) in machine \"%s\" is now %s\n", cpuid, |
980 |
m->cpus[cpuid]->name, m->name, |
981 |
m->cpus[cpuid]->running? "RUNNING" : "STOPPED"); |
982 |
} |
983 |
|
984 |
|
985 |
/* |
986 |
* debugger_cmd_print(): |
987 |
*/ |
988 |
static void debugger_cmd_print(struct machine *m, char *cmd_line) |
989 |
{ |
990 |
int res; |
991 |
uint64_t tmp; |
992 |
|
993 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
994 |
cmd_line ++; |
995 |
|
996 |
if (cmd_line[0] == '\0') { |
997 |
printf("syntax: print expr\n"); |
998 |
return; |
999 |
} |
1000 |
|
1001 |
res = debugger_parse_name(m, cmd_line, 0, &tmp); |
1002 |
switch (res) { |
1003 |
case NAME_PARSE_NOMATCH: |
1004 |
printf("No match.\n"); |
1005 |
break; |
1006 |
case NAME_PARSE_MULTIPLE: |
1007 |
printf("Multiple matches. Try prefixing with %%, $, or @.\n"); |
1008 |
break; |
1009 |
case NAME_PARSE_REGISTER: |
1010 |
printf("%s = 0x%llx\n", cmd_line, (long long)tmp); |
1011 |
break; |
1012 |
case NAME_PARSE_SYMBOL: |
1013 |
if (m->cpus[0]->is_32bit) |
1014 |
printf("%s = 0x%08x\n", cmd_line, (int)tmp); |
1015 |
else |
1016 |
printf("%s = 0x%016llx\n", cmd_line, (long long)tmp); |
1017 |
break; |
1018 |
case NAME_PARSE_NUMBER: |
1019 |
printf("0x%llx\n", (long long)tmp); |
1020 |
break; |
1021 |
} |
1022 |
} |
1023 |
|
1024 |
|
1025 |
/* |
1026 |
* debugger_cmd_put(): |
1027 |
*/ |
1028 |
static void debugger_cmd_put(struct machine *m, char *cmd_line) |
1029 |
{ |
1030 |
static char put_type = ' '; /* Remembered across multiple calls. */ |
1031 |
char copy[200]; |
1032 |
int res, syntax_ok = 0; |
1033 |
char *p, *p2, *q = NULL; |
1034 |
uint64_t addr, data; |
1035 |
unsigned char a_byte; |
1036 |
|
1037 |
strncpy(copy, cmd_line, sizeof(copy)); |
1038 |
copy[sizeof(copy)-1] = '\0'; |
1039 |
|
1040 |
/* syntax: put [b|h|w|d|q] addr, data */ |
1041 |
|
1042 |
p = strchr(copy, ','); |
1043 |
if (p != NULL) { |
1044 |
*p++ = '\0'; |
1045 |
while (*p == ' ' && *p) |
1046 |
p++; |
1047 |
while (strlen(copy) >= 1 && |
1048 |
copy[strlen(copy) - 1] == ' ') |
1049 |
copy[strlen(copy) - 1] = '\0'; |
1050 |
|
1051 |
/* printf("L = '%s', R = '%s'\n", copy, p); */ |
1052 |
|
1053 |
q = copy; |
1054 |
p2 = strchr(q, ' '); |
1055 |
|
1056 |
if (p2 != NULL) { |
1057 |
*p2 = '\0'; |
1058 |
if (strlen(q) != 1) { |
1059 |
printf("Invalid type '%s'\n", q); |
1060 |
return; |
1061 |
} |
1062 |
put_type = *q; |
1063 |
q = p2 + 1; |
1064 |
} |
1065 |
|
1066 |
/* printf("type '%c', L '%s', R '%s'\n", put_type, q, p); */ |
1067 |
syntax_ok = 1; |
1068 |
} |
1069 |
|
1070 |
if (!syntax_ok) { |
1071 |
printf("syntax: put [b|h|w|d|q] addr, data\n"); |
1072 |
printf(" b byte (8 bits)\n"); |
1073 |
printf(" h half-word (16 bits)\n"); |
1074 |
printf(" w word (32 bits)\n"); |
1075 |
printf(" d doubleword (64 bits)\n"); |
1076 |
printf(" q quad-word (128 bits)\n"); |
1077 |
return; |
1078 |
} |
1079 |
|
1080 |
if (put_type == ' ') { |
1081 |
printf("No type specified.\n"); |
1082 |
return; |
1083 |
} |
1084 |
|
1085 |
/* here: q is the address, p is the data. */ |
1086 |
|
1087 |
res = debugger_parse_name(m, q, 0, &addr); |
1088 |
switch (res) { |
1089 |
case NAME_PARSE_NOMATCH: |
1090 |
printf("Couldn't parse the address.\n"); |
1091 |
return; |
1092 |
case NAME_PARSE_MULTIPLE: |
1093 |
printf("Multiple matches for the address." |
1094 |
" Try prefixing with %%, $, or @.\n"); |
1095 |
return; |
1096 |
case NAME_PARSE_REGISTER: |
1097 |
case NAME_PARSE_SYMBOL: |
1098 |
case NAME_PARSE_NUMBER: |
1099 |
break; |
1100 |
default: |
1101 |
printf("INTERNAL ERROR in debugger.c.\n"); |
1102 |
return; |
1103 |
} |
1104 |
|
1105 |
res = debugger_parse_name(m, p, 0, &data); |
1106 |
switch (res) { |
1107 |
case NAME_PARSE_NOMATCH: |
1108 |
printf("Couldn't parse the data.\n"); |
1109 |
return; |
1110 |
case NAME_PARSE_MULTIPLE: |
1111 |
printf("Multiple matches for the data value." |
1112 |
" Try prefixing with %%, $, or @.\n"); |
1113 |
return; |
1114 |
case NAME_PARSE_REGISTER: |
1115 |
case NAME_PARSE_SYMBOL: |
1116 |
case NAME_PARSE_NUMBER: |
1117 |
break; |
1118 |
default: |
1119 |
printf("INTERNAL ERROR in debugger.c.\n"); |
1120 |
return; |
1121 |
} |
1122 |
|
1123 |
/* TODO: haha, maybe this should be refactored */ |
1124 |
|
1125 |
switch (put_type) { |
1126 |
case 'b': |
1127 |
a_byte = data; |
1128 |
if (m->cpus[0]->is_32bit) |
1129 |
printf("0x%08x", (int)addr); |
1130 |
else |
1131 |
printf("0x%016llx", (long long)addr); |
1132 |
printf(": %02x", a_byte); |
1133 |
if (data > 255) |
1134 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1135 |
res = m->cpus[0]->memory_rw(m->cpus[0], m->cpus[0]->mem, addr, |
1136 |
&a_byte, 1, MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS); |
1137 |
if (!res) |
1138 |
printf(" FAILED!\n"); |
1139 |
printf("\n"); |
1140 |
return; |
1141 |
case 'h': |
1142 |
if ((data & 1) != 0) |
1143 |
printf("WARNING: address isn't aligned\n"); |
1144 |
if (m->cpus[0]->is_32bit) |
1145 |
printf("0x%08x", (int)addr); |
1146 |
else |
1147 |
printf("0x%016llx", (long long)addr); |
1148 |
printf(": %04x", (int)data); |
1149 |
if (data > 0xffff) |
1150 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1151 |
res = store_16bit_word(m->cpus[0], addr, data); |
1152 |
if (!res) |
1153 |
printf(" FAILED!\n"); |
1154 |
printf("\n"); |
1155 |
return; |
1156 |
case 'w': |
1157 |
if ((data & 3) != 0) |
1158 |
printf("WARNING: address isn't aligned\n"); |
1159 |
if (m->cpus[0]->is_32bit) |
1160 |
printf("0x%08x", (int)addr); |
1161 |
else |
1162 |
printf("0x%016llx", (long long)addr); |
1163 |
printf(": %08x", (int)data); |
1164 |
if (data > 0xffffffff && (data >> 32) != 0 |
1165 |
&& (data >> 32) != 0xffffffff) |
1166 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1167 |
res = store_32bit_word(m->cpus[0], addr, data); |
1168 |
if (!res) |
1169 |
printf(" FAILED!\n"); |
1170 |
printf("\n"); |
1171 |
return; |
1172 |
case 'd': |
1173 |
if ((data & 7) != 0) |
1174 |
printf("WARNING: address isn't aligned\n"); |
1175 |
if (m->cpus[0]->is_32bit) |
1176 |
printf("0x%08x", (int)addr); |
1177 |
else |
1178 |
printf("0x%016llx", (long long)addr); |
1179 |
printf(": %016llx", (long long)data); |
1180 |
res = store_64bit_word(m->cpus[0], addr, data); |
1181 |
if (!res) |
1182 |
printf(" FAILED!\n"); |
1183 |
printf("\n"); |
1184 |
return; |
1185 |
case 'q': |
1186 |
printf("quad-words: TODO\n"); |
1187 |
/* TODO */ |
1188 |
return; |
1189 |
default: |
1190 |
printf("Unimplemented type '%c'\n", put_type); |
1191 |
return; |
1192 |
} |
1193 |
} |
1194 |
|
1195 |
|
1196 |
/* |
1197 |
* debugger_cmd_quiet(): |
1198 |
*/ |
1199 |
static void debugger_cmd_quiet(struct machine *m, char *cmd_line) |
1200 |
{ |
1201 |
int toggle = 1; |
1202 |
int previous_mode = old_quiet_mode; |
1203 |
|
1204 |
if (cmd_line[0] != '\0') { |
1205 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
1206 |
cmd_line ++; |
1207 |
switch (cmd_line[0]) { |
1208 |
case '0': |
1209 |
toggle = 0; |
1210 |
old_quiet_mode = 0; |
1211 |
break; |
1212 |
case '1': |
1213 |
toggle = 0; |
1214 |
old_quiet_mode = 1; |
1215 |
break; |
1216 |
case 'o': |
1217 |
case 'O': |
1218 |
toggle = 0; |
1219 |
switch (cmd_line[1]) { |
1220 |
case 'n': |
1221 |
case 'N': |
1222 |
old_quiet_mode = 1; |
1223 |
break; |
1224 |
default: |
1225 |
old_quiet_mode = 0; |
1226 |
} |
1227 |
break; |
1228 |
default: |
1229 |
printf("syntax: quiet [on|off]\n"); |
1230 |
return; |
1231 |
} |
1232 |
} |
1233 |
|
1234 |
if (toggle) |
1235 |
old_quiet_mode = 1 - old_quiet_mode; |
1236 |
|
1237 |
printf("quiet_mode = %s", old_quiet_mode? "ON" : "OFF"); |
1238 |
if (old_quiet_mode != previous_mode) |
1239 |
printf(" (was: %s)", previous_mode? "ON" : "OFF"); |
1240 |
printf("\n"); |
1241 |
} |
1242 |
|
1243 |
|
1244 |
/* |
1245 |
* debugger_cmd_quit(): |
1246 |
*/ |
1247 |
static void debugger_cmd_quit(struct machine *m, char *cmd_line) |
1248 |
{ |
1249 |
int i, j, k; |
1250 |
struct emul *e; |
1251 |
|
1252 |
if (*cmd_line) { |
1253 |
printf("syntax: quit\n"); |
1254 |
return; |
1255 |
} |
1256 |
|
1257 |
for (i=0; i<debugger_n_emuls; i++) { |
1258 |
single_step = 0; |
1259 |
|
1260 |
e = debugger_emuls[i]; |
1261 |
force_debugger_at_exit = 0; |
1262 |
|
1263 |
for (j=0; j<e->n_machines; j++) { |
1264 |
struct machine *m = e->machines[j]; |
1265 |
|
1266 |
for (k=0; k<m->ncpus; k++) |
1267 |
m->cpus[k]->running = 0; |
1268 |
|
1269 |
m->exit_without_entering_debugger = 1; |
1270 |
} |
1271 |
} |
1272 |
|
1273 |
exit_debugger = 1; |
1274 |
} |
1275 |
|
1276 |
|
1277 |
/* |
1278 |
* debugger_cmd_reg(): |
1279 |
*/ |
1280 |
static void debugger_cmd_reg(struct machine *m, char *cmd_line) |
1281 |
{ |
1282 |
int i, cpuid = -1, coprocnr = -1; |
1283 |
int gprs, coprocs; |
1284 |
char *p; |
1285 |
|
1286 |
/* [cpuid][,c] */ |
1287 |
if (cmd_line[0] != '\0') { |
1288 |
if (cmd_line[0] != ',') { |
1289 |
cpuid = strtoull(cmd_line, NULL, 0); |
1290 |
if (cpuid < 0 || cpuid >= m->ncpus) { |
1291 |
printf("cpu%i doesn't exist.\n", cpuid); |
1292 |
return; |
1293 |
} |
1294 |
} |
1295 |
p = strchr(cmd_line, ','); |
1296 |
if (p != NULL) { |
1297 |
coprocnr = atoi(p + 1); |
1298 |
if (coprocnr < 0 || coprocnr >= 4) { |
1299 |
printf("Invalid coprocessor number.\n"); |
1300 |
return; |
1301 |
} |
1302 |
} |
1303 |
} |
1304 |
|
1305 |
gprs = (coprocnr == -1)? 1 : 0; |
1306 |
coprocs = (coprocnr == -1)? 0x0 : (1 << coprocnr); |
1307 |
|
1308 |
for (i=0; i<m->ncpus; i++) |
1309 |
if (cpuid == -1 || i == cpuid) |
1310 |
cpu_register_dump(m, m->cpus[i], gprs, coprocs); |
1311 |
} |
1312 |
|
1313 |
|
1314 |
/* |
1315 |
* debugger_cmd_step(): |
1316 |
*/ |
1317 |
static void debugger_cmd_step(struct machine *m, char *cmd_line) |
1318 |
{ |
1319 |
int n = 1; |
1320 |
|
1321 |
if (cmd_line[0] != '\0') { |
1322 |
n = strtoull(cmd_line, NULL, 0); |
1323 |
if (n < 1) { |
1324 |
printf("invalid nr of steps\n"); |
1325 |
return; |
1326 |
} |
1327 |
} |
1328 |
|
1329 |
debugger_n_steps_left_before_interaction = n - 1; |
1330 |
|
1331 |
/* Special hack, see debugger() for more info. */ |
1332 |
exit_debugger = -1; |
1333 |
|
1334 |
strlcpy(repeat_cmd, "step", MAX_CMD_BUFLEN); |
1335 |
} |
1336 |
|
1337 |
|
1338 |
/* |
1339 |
* debugger_cmd_tlbdump(): |
1340 |
* |
1341 |
* Dump each CPU's TLB contents. |
1342 |
*/ |
1343 |
static void debugger_cmd_tlbdump(struct machine *m, char *cmd_line) |
1344 |
{ |
1345 |
int x = -1; |
1346 |
int rawflag = 0; |
1347 |
|
1348 |
if (cmd_line[0] != '\0') { |
1349 |
char *p; |
1350 |
if (cmd_line[0] != ',') { |
1351 |
x = strtoull(cmd_line, NULL, 0); |
1352 |
if (x < 0 || x >= m->ncpus) { |
1353 |
printf("cpu%i doesn't exist.\n", x); |
1354 |
return; |
1355 |
} |
1356 |
} |
1357 |
p = strchr(cmd_line, ','); |
1358 |
if (p != NULL) { |
1359 |
switch (p[1]) { |
1360 |
case 'r': |
1361 |
case 'R': |
1362 |
rawflag = 1; |
1363 |
break; |
1364 |
default: |
1365 |
printf("Unknown tlbdump flag.\n"); |
1366 |
printf("syntax: tlbdump [cpuid][,r]\n"); |
1367 |
return; |
1368 |
} |
1369 |
} |
1370 |
} |
1371 |
|
1372 |
cpu_tlbdump(m, x, rawflag); |
1373 |
} |
1374 |
|
1375 |
|
1376 |
/* |
1377 |
* debugger_cmd_trace(): |
1378 |
*/ |
1379 |
static void debugger_cmd_trace(struct machine *m, char *cmd_line) |
1380 |
{ |
1381 |
int i, toggle = 1; |
1382 |
int previous_mode = old_show_trace_tree; |
1383 |
|
1384 |
if (cmd_line[0] != '\0') { |
1385 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
1386 |
cmd_line ++; |
1387 |
switch (cmd_line[0]) { |
1388 |
case '0': |
1389 |
toggle = 0; |
1390 |
old_show_trace_tree = 0; |
1391 |
break; |
1392 |
case '1': |
1393 |
toggle = 0; |
1394 |
old_show_trace_tree = 1; |
1395 |
break; |
1396 |
case 'o': |
1397 |
case 'O': |
1398 |
toggle = 0; |
1399 |
switch (cmd_line[1]) { |
1400 |
case 'n': |
1401 |
case 'N': |
1402 |
old_show_trace_tree = 1; |
1403 |
break; |
1404 |
default: |
1405 |
old_show_trace_tree = 0; |
1406 |
} |
1407 |
break; |
1408 |
default: |
1409 |
printf("syntax: trace [on|off]\n"); |
1410 |
return; |
1411 |
} |
1412 |
} |
1413 |
|
1414 |
if (toggle) |
1415 |
old_show_trace_tree = 1 - old_show_trace_tree; |
1416 |
|
1417 |
printf("show_trace_tree = %s", old_show_trace_tree? "ON" : "OFF"); |
1418 |
if (old_show_trace_tree != previous_mode) |
1419 |
printf(" (was: %s)", previous_mode? "ON" : "OFF"); |
1420 |
printf("\n"); |
1421 |
|
1422 |
if (m->bintrans_enable && old_show_trace_tree) |
1423 |
printf("NOTE: the trace tree functionality doesn't " |
1424 |
"work very well with bintrans!\n"); |
1425 |
|
1426 |
/* Clear translations: */ |
1427 |
for (i=0; i<m->ncpus; i++) |
1428 |
if (m->cpus[i]->translation_cache != NULL) |
1429 |
cpu_create_or_reset_tc(m->cpus[i]); |
1430 |
} |
1431 |
|
1432 |
|
1433 |
/* |
1434 |
* debugger_cmd_unassemble(): |
1435 |
* |
1436 |
* Dump emulated memory as instructions. |
1437 |
* |
1438 |
* syntax: unassemble [addr [endaddr]] |
1439 |
*/ |
1440 |
static void debugger_cmd_unassemble(struct machine *m, char *cmd_line) |
1441 |
{ |
1442 |
uint64_t addr, addr_start, addr_end; |
1443 |
struct cpu *c; |
1444 |
struct memory *mem; |
1445 |
char *p = NULL; |
1446 |
int r, lines_left = -1; |
1447 |
|
1448 |
if (cmd_line[0] != '\0') { |
1449 |
uint64_t tmp; |
1450 |
char *tmps = strdup(cmd_line); |
1451 |
|
1452 |
/* addr: */ |
1453 |
p = strchr(tmps, ' '); |
1454 |
if (p != NULL) |
1455 |
*p = '\0'; |
1456 |
r = debugger_parse_name(m, tmps, 0, &tmp); |
1457 |
free(tmps); |
1458 |
|
1459 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
1460 |
printf("Unparsable address: %s\n", cmd_line); |
1461 |
return; |
1462 |
} else { |
1463 |
last_unasm_addr = tmp; |
1464 |
} |
1465 |
|
1466 |
p = strchr(cmd_line, ' '); |
1467 |
} |
1468 |
|
1469 |
addr_start = last_unasm_addr; |
1470 |
|
1471 |
if (addr_start == MAGIC_UNTOUCHED) { |
1472 |
uint64_t tmp; |
1473 |
int match_register = 0; |
1474 |
cpu_register_match(m, "pc", 0, &tmp, &match_register); |
1475 |
if (match_register) { |
1476 |
addr_start = tmp; |
1477 |
} else { |
1478 |
printf("No starting address.\n"); |
1479 |
return; |
1480 |
} |
1481 |
} |
1482 |
|
1483 |
addr_end = addr_start + 1000; |
1484 |
|
1485 |
/* endaddr: */ |
1486 |
if (p != NULL) { |
1487 |
while (*p == ' ' && *p) |
1488 |
p++; |
1489 |
r = debugger_parse_name(m, p, 0, &addr_end); |
1490 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
1491 |
printf("Unparsable address: %s\n", cmd_line); |
1492 |
return; |
1493 |
} |
1494 |
} else |
1495 |
lines_left = 20; |
1496 |
|
1497 |
if (m->cpus == NULL) { |
1498 |
printf("No cpus (?)\n"); |
1499 |
return; |
1500 |
} |
1501 |
c = m->cpus[m->bootstrap_cpu]; |
1502 |
if (c == NULL) { |
1503 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
1504 |
return; |
1505 |
} |
1506 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
1507 |
|
1508 |
addr = addr_start; |
1509 |
|
1510 |
ctrl_c = 0; |
1511 |
|
1512 |
while (addr < addr_end) { |
1513 |
unsigned int i, len; |
1514 |
unsigned char buf[17]; /* TODO: How long can an |
1515 |
instruction be, on weird archs? */ |
1516 |
memset(buf, 0, sizeof(buf)); |
1517 |
|
1518 |
for (i=0; i<sizeof(buf); i++) |
1519 |
c->memory_rw(c, mem, addr+i, buf+i, 1, MEM_READ, |
1520 |
CACHE_NONE | NO_EXCEPTIONS); |
1521 |
|
1522 |
len = cpu_disassemble_instr(m, c, buf, 0, addr, 0); |
1523 |
|
1524 |
if (ctrl_c) |
1525 |
return; |
1526 |
if (len == 0) |
1527 |
break; |
1528 |
|
1529 |
addr += len; |
1530 |
|
1531 |
if (lines_left != -1) { |
1532 |
lines_left --; |
1533 |
if (lines_left == 0) |
1534 |
break; |
1535 |
} |
1536 |
} |
1537 |
|
1538 |
last_unasm_addr = addr; |
1539 |
|
1540 |
strlcpy(repeat_cmd, "unassemble", MAX_CMD_BUFLEN); |
1541 |
} |
1542 |
|
1543 |
|
1544 |
/* |
1545 |
* debugger_cmd_version(): |
1546 |
*/ |
1547 |
static void debugger_cmd_version(struct machine *m, char *cmd_line) |
1548 |
{ |
1549 |
if (*cmd_line) { |
1550 |
printf("syntax: version\n"); |
1551 |
return; |
1552 |
} |
1553 |
|
1554 |
#ifdef VERSION |
1555 |
printf("%s, %s\n", VERSION, COMPILE_DATE); |
1556 |
#else |
1557 |
printf("(no version), %s\n", COMPILE_DATE); |
1558 |
#endif |
1559 |
} |
1560 |
|
1561 |
|
1562 |
struct cmd { |
1563 |
char *name; |
1564 |
char *args; |
1565 |
int tmp_flag; |
1566 |
void (*f)(struct machine *, char *cmd_line); |
1567 |
char *description; |
1568 |
}; |
1569 |
|
1570 |
static struct cmd cmds[] = { |
1571 |
{ "breakpoint", "...", 0, debugger_cmd_breakpoint, |
1572 |
"manipulate breakpoints" }, |
1573 |
|
1574 |
{ "bintrans", "[on|off]", 0, debugger_cmd_bintrans, |
1575 |
"toggle bintrans on or off" }, |
1576 |
|
1577 |
/* NOTE: Try to keep 'c' down to only one command. Having 'continue' |
1578 |
available as a one-letter command is very convenient. */ |
1579 |
|
1580 |
{ "continue", "", 0, debugger_cmd_continue, |
1581 |
"continue execution" }, |
1582 |
|
1583 |
{ "device", "...", 0, debugger_cmd_device, |
1584 |
"show info about (or manipulate) devices" }, |
1585 |
|
1586 |
{ "dump", "[addr [endaddr]]", 0, debugger_cmd_dump, |
1587 |
"dump memory contents in hex and ASCII" }, |
1588 |
|
1589 |
{ "emuls", "", 0, debugger_cmd_emuls, |
1590 |
"print a summary of all current emuls" }, |
1591 |
|
1592 |
{ "focus", "x[,y]", 0, debugger_cmd_focus, |
1593 |
"changes focus to machine x (in emul y)" }, |
1594 |
|
1595 |
{ "help", "", 0, debugger_cmd_help, |
1596 |
"print this help message" }, |
1597 |
|
1598 |
{ "itrace", "", 0, debugger_cmd_itrace, |
1599 |
"toggle instruction_trace on or off" }, |
1600 |
|
1601 |
{ "lookup", "name|addr", 0, debugger_cmd_lookup, |
1602 |
"lookup a symbol by name or address" }, |
1603 |
|
1604 |
{ "machine", "", 0, debugger_cmd_machine, |
1605 |
"print a summary of the current machine" }, |
1606 |
|
1607 |
{ "ninstrs", "[on|off]", 0, debugger_cmd_ninstrs, |
1608 |
"toggle (set or unset) show_nr_of_instructions" }, |
1609 |
|
1610 |
{ "opcodestats", "", 0, debugger_cmd_opcodestats, |
1611 |
"show opcode statistics" }, |
1612 |
|
1613 |
{ "pause", "cpuid", 0, debugger_cmd_pause, |
1614 |
"pause (or unpause) a CPU" }, |
1615 |
|
1616 |
{ "print", "expr", 0, debugger_cmd_print, |
1617 |
"evaluate an expression without side-effects" }, |
1618 |
|
1619 |
{ "put", "[b|h|w|d|q] addr, data", 0, debugger_cmd_put, |
1620 |
"modify emulated memory contents" }, |
1621 |
|
1622 |
{ "quiet", "[on|off]", 0, debugger_cmd_quiet, |
1623 |
"toggle quiet_mode on or off" }, |
1624 |
|
1625 |
{ "quit", "", 0, debugger_cmd_quit, |
1626 |
"quit the emulator" }, |
1627 |
|
1628 |
{ "reg", "[cpuid][,c]", 0, debugger_cmd_reg, |
1629 |
"show GPRs (or coprocessor c's registers)" }, |
1630 |
|
1631 |
/* NOTE: Try to keep 's' down to only one command. Having 'step' |
1632 |
available as a one-letter command is very convenient. */ |
1633 |
|
1634 |
{ "step", "[n]", 0, debugger_cmd_step, |
1635 |
"single-step one (or n) instruction(s)" }, |
1636 |
|
1637 |
{ "tlbdump", "[cpuid][,r]", 0, debugger_cmd_tlbdump, |
1638 |
"dump TLB contents (add ',r' for raw data)" }, |
1639 |
|
1640 |
{ "trace", "[on|off]", 0, debugger_cmd_trace, |
1641 |
"toggle show_trace_tree on or off" }, |
1642 |
|
1643 |
{ "unassemble", "[addr [endaddr]]", 0, debugger_cmd_unassemble, |
1644 |
"dump memory contents as instructions" }, |
1645 |
|
1646 |
{ "version", "", 0, debugger_cmd_version, |
1647 |
"print version information" }, |
1648 |
|
1649 |
/* Note: NULL handler. */ |
1650 |
{ "x = expr", "", 0, NULL, "generic assignment" }, |
1651 |
|
1652 |
{ NULL, NULL, 0, NULL, NULL } |
1653 |
}; |
1654 |
|
1655 |
|
1656 |
/* |
1657 |
* debugger_cmd_help(): |
1658 |
* |
1659 |
* Print a list of available commands. |
1660 |
* |
1661 |
* NOTE: This is placed after the cmds[] array, because it needs to |
1662 |
* access it. |
1663 |
* |
1664 |
* TODO: Command completion (ie just type "help s" for "help step"). |
1665 |
*/ |
1666 |
static void debugger_cmd_help(struct machine *m, char *cmd_line) |
1667 |
{ |
1668 |
int i, max_name_len = 0, only_one = 0, only_one_match = 0; |
1669 |
char *nlines_env = getenv("LINES"); |
1670 |
int nlines = atoi(nlines_env != NULL? nlines_env : "999999"); |
1671 |
int j, curlines; |
1672 |
|
1673 |
if (cmd_line[0] != '\0') { |
1674 |
only_one = 1; |
1675 |
} |
1676 |
|
1677 |
i = 0; |
1678 |
while (cmds[i].name != NULL) { |
1679 |
int a = strlen(cmds[i].name); |
1680 |
if (cmds[i].args != NULL) |
1681 |
a += 1 + strlen(cmds[i].args); |
1682 |
if (a > max_name_len) |
1683 |
max_name_len = a; |
1684 |
i++; |
1685 |
} |
1686 |
|
1687 |
curlines = 0; |
1688 |
if (!only_one) { |
1689 |
printf("Available commands:\n"); |
1690 |
curlines++; |
1691 |
} |
1692 |
|
1693 |
i = 0; |
1694 |
while (cmds[i].name != NULL) { |
1695 |
char buf[100]; |
1696 |
snprintf(buf, sizeof(buf), "%s", cmds[i].name); |
1697 |
|
1698 |
if (only_one) { |
1699 |
if (strcmp(cmds[i].name, cmd_line) != 0) { |
1700 |
i++; |
1701 |
continue; |
1702 |
} |
1703 |
only_one_match = 1; |
1704 |
} |
1705 |
|
1706 |
if (cmds[i].args != NULL) |
1707 |
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), |
1708 |
" %s", cmds[i].args); |
1709 |
|
1710 |
printf(" "); |
1711 |
for (j=0; j<max_name_len; j++) |
1712 |
if (j < strlen(buf)) |
1713 |
printf("%c", buf[j]); |
1714 |
else |
1715 |
printf(" "); |
1716 |
|
1717 |
printf(" %s\n", cmds[i].description); |
1718 |
i++; |
1719 |
|
1720 |
curlines ++; |
1721 |
if (curlines >= nlines - 1) { |
1722 |
char ch; |
1723 |
printf("-- more --"); fflush(stdout); |
1724 |
ch = debugger_readchar(); |
1725 |
printf("\n"); |
1726 |
if (ch == 'q' || ch == 'Q') |
1727 |
return; |
1728 |
curlines = 0; |
1729 |
} |
1730 |
} |
1731 |
|
1732 |
if (only_one) { |
1733 |
if (!only_one_match) |
1734 |
printf("%s: no such command\n", cmd_line); |
1735 |
return; |
1736 |
} |
1737 |
|
1738 |
/* TODO: generalize/refactor */ |
1739 |
curlines += 8; |
1740 |
if (curlines > nlines - 1) { |
1741 |
char ch; |
1742 |
printf("-- more --"); fflush(stdout); |
1743 |
ch = debugger_readchar(); |
1744 |
printf("\n"); |
1745 |
if (ch == 'q' || ch == 'Q') |
1746 |
return; |
1747 |
curlines = 0; |
1748 |
} |
1749 |
|
1750 |
printf("\nIn generic assignments, x must be a register, and expr can be" |
1751 |
" a register, a\nnumeric value, or a symbol name (+ an optional " |
1752 |
"numeric offset). In case there\nare multiple matches (i.e. a " |
1753 |
"symbol that has the same name as a register), you\nmay add a " |
1754 |
"prefix character as a hint: '%%' for registers, '@' for symbols," |
1755 |
" and\n'$' for numeric values. Use 0x for hexadecimal values.\n"); |
1756 |
} |
1757 |
|
1758 |
|
1759 |
/****************************************************************************/ |
1760 |
|
1761 |
|
1762 |
/* |
1763 |
* debugger_assignment(): |
1764 |
* |
1765 |
* cmd contains something like "pc=0x80001000", or "r31=memcpy+0x40". |
1766 |
*/ |
1767 |
void debugger_assignment(struct machine *m, char *cmd) |
1768 |
{ |
1769 |
char *left, *right; |
1770 |
int res_left, res_right; |
1771 |
uint64_t tmp; |
1772 |
uint64_t old_pc = m->cpus[0]->pc; /* TODO: multiple cpus? */ |
1773 |
|
1774 |
left = malloc(MAX_CMD_BUFLEN); |
1775 |
if (left == NULL) { |
1776 |
fprintf(stderr, "out of memory in debugger_assignment()\n"); |
1777 |
exit(1); |
1778 |
} |
1779 |
strlcpy(left, cmd, MAX_CMD_BUFLEN); |
1780 |
right = strchr(left, '='); |
1781 |
if (right == NULL) { |
1782 |
fprintf(stderr, "internal error in the debugger\n"); |
1783 |
exit(1); |
1784 |
} |
1785 |
*right = '\0'; |
1786 |
|
1787 |
/* Remove trailing spaces in left: */ |
1788 |
while (strlen(left) >= 1 && left[strlen(left)-1] == ' ') |
1789 |
left[strlen(left)-1] = '\0'; |
1790 |
|
1791 |
/* Remove leading spaces in right: */ |
1792 |
right++; |
1793 |
while (*right == ' ' && *right != '\0') |
1794 |
right++; |
1795 |
|
1796 |
/* printf("left = '%s'\nright = '%s'\n", left, right); */ |
1797 |
|
1798 |
res_right = debugger_parse_name(m, right, 0, &tmp); |
1799 |
switch (res_right) { |
1800 |
case NAME_PARSE_NOMATCH: |
1801 |
printf("No match for the right-hand side of the assignment.\n"); |
1802 |
break; |
1803 |
case NAME_PARSE_MULTIPLE: |
1804 |
printf("Multiple matches for the right-hand side of the " |
1805 |
"assignment.\n"); |
1806 |
break; |
1807 |
default: |
1808 |
res_left = debugger_parse_name(m, left, 1, &tmp); |
1809 |
switch (res_left) { |
1810 |
case NAME_PARSE_NOMATCH: |
1811 |
printf("No match for the left-hand side of the " |
1812 |
"assignment.\n"); |
1813 |
break; |
1814 |
case NAME_PARSE_MULTIPLE: |
1815 |
printf("Multiple matches for the left-hand side " |
1816 |
"of the assignment.\n"); |
1817 |
break; |
1818 |
default: |
1819 |
debugger_cmd_print(m, left); |
1820 |
} |
1821 |
} |
1822 |
|
1823 |
/* |
1824 |
* If the PC has changed, then release any breakpoint we were |
1825 |
* currently stopped at. |
1826 |
* |
1827 |
* TODO: multiple cpus? |
1828 |
*/ |
1829 |
if (old_pc != m->cpus[0]->pc) |
1830 |
single_step_breakpoint = 0; |
1831 |
|
1832 |
free(left); |
1833 |
} |
1834 |
|
1835 |
|
1836 |
/* |
1837 |
* debugger_readline(): |
1838 |
* |
1839 |
* Read a line from the terminal. |
1840 |
*/ |
1841 |
static char *debugger_readline(void) |
1842 |
{ |
1843 |
int ch, i, j, n, i_match, reallen, cmd_len, cursor_pos; |
1844 |
int read_from_index = last_cmd_index; |
1845 |
char *cmd = last_cmd[last_cmd_index]; |
1846 |
|
1847 |
cmd_len = 0; cmd[0] = '\0'; |
1848 |
printf("GXemul> "); |
1849 |
fflush(stdout); |
1850 |
|
1851 |
ch = '\0'; |
1852 |
cmd_len = 0; |
1853 |
cursor_pos = 0; |
1854 |
|
1855 |
while (ch != '\n') { |
1856 |
ch = debugger_readchar(); |
1857 |
|
1858 |
if ((ch == '\b' || ch == 127) && cursor_pos > 0) { |
1859 |
/* Backspace. */ |
1860 |
cursor_pos --; |
1861 |
cmd_len --; |
1862 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
1863 |
cmd_len); |
1864 |
cmd[cmd_len] = '\0'; |
1865 |
printf("\b"); |
1866 |
for (i=cursor_pos; i<cmd_len; i++) |
1867 |
printf("%c", cmd[i]); |
1868 |
printf(" \b"); |
1869 |
for (i=cursor_pos; i<cmd_len; i++) |
1870 |
printf("\b"); |
1871 |
} else if (ch == 4 && cmd_len > 0 && cursor_pos < cmd_len) { |
1872 |
/* CTRL-D: Delete. */ |
1873 |
cmd_len --; |
1874 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
1875 |
cmd_len); |
1876 |
cmd[cmd_len] = '\0'; |
1877 |
for (i=cursor_pos; i<cmd_len; i++) |
1878 |
printf("%c", cmd[i]); |
1879 |
printf(" \b"); |
1880 |
for (i=cursor_pos; i<cmd_len; i++) |
1881 |
printf("\b"); |
1882 |
} else if (ch == 1) { |
1883 |
/* CTRL-A: Start of line. */ |
1884 |
while (cursor_pos > 0) { |
1885 |
cursor_pos --; |
1886 |
printf("\b"); |
1887 |
} |
1888 |
} else if (ch == 2) { |
1889 |
/* CTRL-B: Backwards one character. */ |
1890 |
if (cursor_pos > 0) { |
1891 |
printf("\b"); |
1892 |
cursor_pos --; |
1893 |
} |
1894 |
} else if (ch == 5) { |
1895 |
/* CTRL-E: End of line. */ |
1896 |
while (cursor_pos < cmd_len) { |
1897 |
printf("%c", cmd[cursor_pos]); |
1898 |
cursor_pos ++; |
1899 |
} |
1900 |
} else if (ch == 6) { |
1901 |
/* CTRL-F: Forward one character. */ |
1902 |
if (cursor_pos < cmd_len) { |
1903 |
printf("%c", |
1904 |
cmd[cursor_pos]); |
1905 |
cursor_pos ++; |
1906 |
} |
1907 |
} else if (ch == 11) { |
1908 |
/* CTRL-K: Kill to end of line. */ |
1909 |
for (i=0; i<MAX_CMD_BUFLEN; i++) |
1910 |
console_makeavail(MAIN_CONSOLE, 4); /* :-) */ |
1911 |
} else if (ch == 14 || ch == 16) { |
1912 |
/* CTRL-P: Previous line in the command history, |
1913 |
CTRL-N: next line */ |
1914 |
do { |
1915 |
if (ch == 14 && |
1916 |
read_from_index == last_cmd_index) |
1917 |
break; |
1918 |
if (ch == 16) |
1919 |
i = read_from_index - 1; |
1920 |
else |
1921 |
i = read_from_index + 1; |
1922 |
|
1923 |
if (i < 0) |
1924 |
i = N_PREVIOUS_CMDS - 1; |
1925 |
if (i >= N_PREVIOUS_CMDS) |
1926 |
i = 0; |
1927 |
|
1928 |
/* Special case: pressing 'down' |
1929 |
to reach last_cmd_index: */ |
1930 |
if (i == last_cmd_index) { |
1931 |
read_from_index = i; |
1932 |
for (i=cursor_pos; i<cmd_len; |
1933 |
i++) |
1934 |
printf(" "); |
1935 |
for (i=cmd_len-1; i>=0; i--) |
1936 |
printf("\b \b"); |
1937 |
cmd[0] = '\0'; |
1938 |
cmd_len = cursor_pos = 0; |
1939 |
} else if (last_cmd[i][0] != '\0') { |
1940 |
/* Copy from old line: */ |
1941 |
read_from_index = i; |
1942 |
for (i=cursor_pos; i<cmd_len; |
1943 |
i++) |
1944 |
printf(" "); |
1945 |
for (i=cmd_len-1; i>=0; i--) |
1946 |
printf("\b \b"); |
1947 |
strlcpy(cmd, |
1948 |
last_cmd[read_from_index], |
1949 |
MAX_CMD_BUFLEN); |
1950 |
cmd_len = strlen(cmd); |
1951 |
printf("%s", cmd); |
1952 |
cursor_pos = cmd_len; |
1953 |
} |
1954 |
} while (0); |
1955 |
} else if (ch >= ' ' && cmd_len < MAX_CMD_BUFLEN-1) { |
1956 |
/* Visible character: */ |
1957 |
memmove(cmd + cursor_pos + 1, cmd + cursor_pos, |
1958 |
cmd_len - cursor_pos); |
1959 |
cmd[cursor_pos] = ch; |
1960 |
cmd_len ++; |
1961 |
cursor_pos ++; |
1962 |
cmd[cmd_len] = '\0'; |
1963 |
printf("%c", ch); |
1964 |
for (i=cursor_pos; i<cmd_len; i++) |
1965 |
printf("%c", cmd[i]); |
1966 |
for (i=cursor_pos; i<cmd_len; i++) |
1967 |
printf("\b"); |
1968 |
} else if (ch == '\r' || ch == '\n') { |
1969 |
ch = '\n'; |
1970 |
printf("\n"); |
1971 |
} else if (ch == '\t') { |
1972 |
/* Super-simple tab-completion: */ |
1973 |
i = 0; |
1974 |
while (cmds[i].name != NULL) |
1975 |
cmds[i++].tmp_flag = 0; |
1976 |
|
1977 |
/* Check for a (partial) command match: */ |
1978 |
n = i = i_match = 0; |
1979 |
while (cmds[i].name != NULL) { |
1980 |
if (strncasecmp(cmds[i].name, cmd, |
1981 |
cmd_len) == 0) { |
1982 |
cmds[i].tmp_flag = 1; |
1983 |
i_match = i; |
1984 |
n++; |
1985 |
} |
1986 |
i++; |
1987 |
} |
1988 |
|
1989 |
switch (n) { |
1990 |
case 0: /* Beep. */ |
1991 |
printf("\a"); |
1992 |
break; |
1993 |
case 1: /* Add the rest of the command: */ |
1994 |
reallen = strlen(cmds[i_match].name); |
1995 |
for (i=cmd_len; i<reallen; i++) |
1996 |
console_makeavail(MAIN_CONSOLE, |
1997 |
cmds[i_match].name[i]); |
1998 |
/* ... and a space, if the command takes |
1999 |
any arguments: */ |
2000 |
if (cmds[i_match].args != NULL && |
2001 |
cmds[i_match].args[0] != '\0') |
2002 |
console_makeavail(MAIN_CONSOLE, ' '); |
2003 |
break; |
2004 |
default: |
2005 |
/* Show all possible commands: */ |
2006 |
printf("\a\n"); /* Beep. :-) */ |
2007 |
i = 0; /* i = cmds index */ |
2008 |
j = 0; /* j = # of cmds printed */ |
2009 |
while (cmds[i].name != NULL) { |
2010 |
if (cmds[i].tmp_flag) { |
2011 |
int q; |
2012 |
if (j == 0) |
2013 |
printf(" "); |
2014 |
printf("%s", |
2015 |
cmds[i].name); |
2016 |
j++; |
2017 |
if (j != 6) |
2018 |
for (q=0; q<13-strlen( |
2019 |
cmds[i].name); q++) |
2020 |
printf(" "); |
2021 |
if (j == 6) { |
2022 |
printf("\n"); |
2023 |
j = 0; |
2024 |
} |
2025 |
} |
2026 |
i++; |
2027 |
} |
2028 |
if (j != 0) |
2029 |
printf("\n"); |
2030 |
printf("GXemul> "); |
2031 |
for (i=0; i<cmd_len; i++) |
2032 |
printf("%c", cmd[i]); |
2033 |
} |
2034 |
} else if (ch == 27) { |
2035 |
/* Escape codes: (cursor keys etc) */ |
2036 |
while ((ch = console_readchar(MAIN_CONSOLE)) < 0) |
2037 |
usleep(1); |
2038 |
if (ch == '[' || ch == 'O') { |
2039 |
while ((ch = console_readchar(MAIN_CONSOLE)) |
2040 |
< 0) |
2041 |
usleep(1); |
2042 |
switch (ch) { |
2043 |
case '2': /* 2~ = ins */ |
2044 |
case '5': /* 5~ = pgup */ |
2045 |
case '6': /* 6~ = pgdn */ |
2046 |
/* TODO: Ugly hack, but might work. */ |
2047 |
while ((ch = console_readchar( |
2048 |
MAIN_CONSOLE)) < 0) |
2049 |
usleep(1); |
2050 |
/* Do nothing for these keys. */ |
2051 |
break; |
2052 |
case '3': /* 3~ = delete */ |
2053 |
/* TODO: Ugly hack, but might work. */ |
2054 |
while ((ch = console_readchar( |
2055 |
MAIN_CONSOLE)) < 0) |
2056 |
usleep(1); |
2057 |
console_makeavail(MAIN_CONSOLE, '\b'); |
2058 |
break; |
2059 |
case 'A': /* Up. */ |
2060 |
/* Up cursor ==> CTRL-P */ |
2061 |
console_makeavail(MAIN_CONSOLE, 16); |
2062 |
break; |
2063 |
case 'B': /* Down. */ |
2064 |
/* Down cursor ==> CTRL-N */ |
2065 |
console_makeavail(MAIN_CONSOLE, 14); |
2066 |
break; |
2067 |
case 'C': |
2068 |
/* Right cursor ==> CTRL-F */ |
2069 |
console_makeavail(MAIN_CONSOLE, 6); |
2070 |
break; |
2071 |
case 'D': /* Left */ |
2072 |
/* Left cursor ==> CTRL-B */ |
2073 |
console_makeavail(MAIN_CONSOLE, 2); |
2074 |
break; |
2075 |
case 'F': |
2076 |
/* End ==> CTRL-E */ |
2077 |
console_makeavail(MAIN_CONSOLE, 5); |
2078 |
break; |
2079 |
case 'H': |
2080 |
/* Home ==> CTRL-A */ |
2081 |
console_makeavail(MAIN_CONSOLE, 1); |
2082 |
break; |
2083 |
} |
2084 |
} |
2085 |
} |
2086 |
|
2087 |
fflush(stdout); |
2088 |
} |
2089 |
|
2090 |
return cmd; |
2091 |
} |
2092 |
|
2093 |
|
2094 |
/* |
2095 |
* debugger(): |
2096 |
* |
2097 |
* This is a loop, which reads a command from the terminal, and executes it. |
2098 |
*/ |
2099 |
void debugger(void) |
2100 |
{ |
2101 |
int i, n, i_match, matchlen, cmd_len; |
2102 |
char *cmd; |
2103 |
|
2104 |
if (debugger_n_steps_left_before_interaction > 0) { |
2105 |
debugger_n_steps_left_before_interaction --; |
2106 |
return; |
2107 |
} |
2108 |
|
2109 |
exit_debugger = 0; |
2110 |
|
2111 |
while (!exit_debugger) { |
2112 |
/* Read a line from the terminal: */ |
2113 |
cmd = debugger_readline(); |
2114 |
cmd_len = strlen(cmd); |
2115 |
|
2116 |
/* Remove spaces: */ |
2117 |
while (cmd_len > 0 && cmd[0]==' ') |
2118 |
memmove(cmd, cmd+1, cmd_len --); |
2119 |
while (cmd_len > 0 && cmd[cmd_len-1] == ' ') |
2120 |
cmd[(cmd_len--)-1] = '\0'; |
2121 |
|
2122 |
/* No command? Then try reading another line. */ |
2123 |
if (cmd_len == 0) { |
2124 |
/* Special case for repeated commands: */ |
2125 |
if (repeat_cmd[0] != '\0') |
2126 |
strlcpy(cmd, repeat_cmd, MAX_CMD_BUFLEN); |
2127 |
else |
2128 |
continue; |
2129 |
} else { |
2130 |
last_cmd_index ++; |
2131 |
if (last_cmd_index >= N_PREVIOUS_CMDS) |
2132 |
last_cmd_index = 0; |
2133 |
|
2134 |
repeat_cmd[0] = '\0'; |
2135 |
} |
2136 |
|
2137 |
/* |
2138 |
* Is there a '=' on the command line? Then try to do an |
2139 |
* assignment. (Only if there is just one word, followed |
2140 |
* by the '=' sign. This makes it possible to use commands |
2141 |
* such as "device add name addr=xyz".) |
2142 |
*/ |
2143 |
if (strchr(cmd, '=') != NULL) { |
2144 |
/* Count the nr of words: */ |
2145 |
int nw = 0, inword = 0; |
2146 |
char *p = cmd; |
2147 |
while (*p) { |
2148 |
if (*p == '=') |
2149 |
break; |
2150 |
if (*p != ' ') { |
2151 |
if (!inword) |
2152 |
nw ++; |
2153 |
inword = 1; |
2154 |
} else |
2155 |
inword = 0; |
2156 |
p++; |
2157 |
} |
2158 |
|
2159 |
if (nw == 1) { |
2160 |
debugger_assignment(debugger_machine, cmd); |
2161 |
continue; |
2162 |
} |
2163 |
} |
2164 |
|
2165 |
i = 0; |
2166 |
while (cmds[i].name != NULL) |
2167 |
cmds[i++].tmp_flag = 0; |
2168 |
|
2169 |
/* How many chars in cmd to match against: */ |
2170 |
matchlen = 0; |
2171 |
while (isalpha((int)cmd[matchlen])) |
2172 |
matchlen ++; |
2173 |
|
2174 |
/* Check for a command name match: */ |
2175 |
n = i = i_match = 0; |
2176 |
while (cmds[i].name != NULL) { |
2177 |
if (strncasecmp(cmds[i].name, cmd, matchlen) == 0 |
2178 |
&& cmds[i].f != NULL) { |
2179 |
cmds[i].tmp_flag = 1; |
2180 |
i_match = i; |
2181 |
n++; |
2182 |
} |
2183 |
i++; |
2184 |
} |
2185 |
|
2186 |
/* No match? */ |
2187 |
if (n == 0) { |
2188 |
printf("Unknown command '%s'. " |
2189 |
"Type 'help' for help.\n", cmd); |
2190 |
continue; |
2191 |
} |
2192 |
|
2193 |
/* More than one match? */ |
2194 |
if (n > 1) { |
2195 |
printf("Ambiguous command '%s': ", cmd); |
2196 |
i = 0; |
2197 |
while (cmds[i].name != NULL) { |
2198 |
if (cmds[i].tmp_flag) |
2199 |
printf(" %s", cmds[i].name); |
2200 |
i++; |
2201 |
} |
2202 |
printf("\n"); |
2203 |
continue; |
2204 |
} |
2205 |
|
2206 |
/* Exactly one match: */ |
2207 |
if (cmds[i_match].f != NULL) { |
2208 |
char *p = cmd + matchlen; |
2209 |
/* Remove leading whitespace from the args... */ |
2210 |
while (*p != '\0' && *p == ' ') |
2211 |
p++; |
2212 |
|
2213 |
/* ... and run the command: */ |
2214 |
cmds[i_match].f(debugger_machine, p); |
2215 |
} else |
2216 |
printf("FATAL ERROR: internal error in debugger.c:" |
2217 |
" no handler for this command?\n"); |
2218 |
|
2219 |
/* Special hack for the "step" command: */ |
2220 |
if (exit_debugger == -1) |
2221 |
return; |
2222 |
} |
2223 |
|
2224 |
gettimeofday(&debugger_machine->starttime, NULL); |
2225 |
debugger_machine->ncycles_since_gettimeofday = 0; |
2226 |
|
2227 |
single_step = 0; |
2228 |
debugger_machine->instruction_trace = old_instruction_trace; |
2229 |
debugger_machine->show_trace_tree = old_show_trace_tree; |
2230 |
quiet_mode = old_quiet_mode; |
2231 |
} |
2232 |
|
2233 |
|
2234 |
/* |
2235 |
* debugger_reset(): |
2236 |
* |
2237 |
* This function should be called before calling debugger(), when it is |
2238 |
* absolutely necessary that debugger() is interactive. Otherwise, it might |
2239 |
* return without doing anything, such as when single-stepping multiple |
2240 |
* instructions at a time. |
2241 |
*/ |
2242 |
void debugger_reset(void) |
2243 |
{ |
2244 |
debugger_n_steps_left_before_interaction = 0; |
2245 |
} |
2246 |
|
2247 |
|
2248 |
/* |
2249 |
* debugger_init(): |
2250 |
* |
2251 |
* Must be called before any other debugger function is used. |
2252 |
*/ |
2253 |
void debugger_init(struct emul **emuls, int n_emuls) |
2254 |
{ |
2255 |
int i; |
2256 |
|
2257 |
debugger_n_emuls = n_emuls; |
2258 |
debugger_emuls = emuls; |
2259 |
|
2260 |
if (n_emuls < 1) { |
2261 |
fprintf(stderr, "\nERROR: No emuls (?)\n"); |
2262 |
exit(1); |
2263 |
} |
2264 |
|
2265 |
debugger_emul = emuls[0]; |
2266 |
if (emuls[0]->n_machines < 1) { |
2267 |
fprintf(stderr, "\nERROR: No machines in emuls[0], " |
2268 |
"cannot handle this situation yet.\n\n"); |
2269 |
exit(1); |
2270 |
} |
2271 |
|
2272 |
debugger_machine = emuls[0]->machines[0]; |
2273 |
|
2274 |
for (i=0; i<N_PREVIOUS_CMDS; i++) { |
2275 |
last_cmd[i] = malloc(MAX_CMD_BUFLEN); |
2276 |
if (last_cmd[i] == NULL) { |
2277 |
fprintf(stderr, "debugger_init(): out of memory\n"); |
2278 |
exit(1); |
2279 |
} |
2280 |
last_cmd[i][0] = '\0'; |
2281 |
} |
2282 |
|
2283 |
last_cmd_index = 0; |
2284 |
repeat_cmd[0] = '\0'; |
2285 |
} |
2286 |
|