rtos.c 15.6 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
/***************************************************************************
 *   Copyright (C) 2011 by Broadcom Corporation                            *
 *   Evan Hunter - ehunter@broadcom.com                                    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif


#include "rtos.h"
#include "target/target.h"
#include "helper/log.h"
#include "server/gdb_server.h"



static void hex_to_str( char* dst, char * hex_src );


/* RTOSs */
extern struct rtos_type FreeRTOS_rtos;
extern struct rtos_type ThreadX_rtos;
Alan Bowman's avatar
Alan Bowman committed
39
extern struct rtos_type eCos_rtos;
40
41
42
43
44

static struct rtos_type *rtos_types[] =
{
	&ThreadX_rtos,
	&FreeRTOS_rtos,
Alan Bowman's avatar
Alan Bowman committed
45
	&eCos_rtos,
46
47
48
	NULL
};

49
50
int rtos_thread_packet(struct connection *connection, char *packet, int packet_size);

Michel JAOUEN's avatar
Michel JAOUEN committed
51
52
53
54
55
56
57
int rtos_smp_init(struct target *target)
{
	if (target->rtos->type->smp_init)
		return target->rtos->type->smp_init(target);
	return ERROR_TARGET_INIT_FAILED;
}

58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121

int rtos_create(Jim_GetOptInfo *goi, struct target * target)
{
	int x;
	char *cp;
	if (! goi->isconfigure) {
		if (goi->argc != 0) {
			if (goi->argc != 0) {
				Jim_WrongNumArgs(goi->interp,
						goi->argc, goi->argv,
						"NO PARAMS");
				return JIM_ERR;
			}

			Jim_SetResultString(goi->interp,
					target_type_name(target), -1);
		}
	}

	if (target->rtos) {
		free((void *)(target->rtos));
	}
//			e = Jim_GetOpt_String(goi, &cp, NULL);
//			target->rtos = strdup(cp);

	Jim_GetOpt_String(goi, &cp, NULL);
	/* now does target type exist */

	if ( 0 == strcmp( cp, "auto") )
	{
		// auto detection of RTOS
		target->rtos_auto_detect = true;
		x = 0;
	}
	else
	{

		for (x = 0 ; rtos_types[x] ; x++) {
			if (0 == strcmp(cp, rtos_types[x]->name)) {
				/* found */
				break;
			}
		}
		if (rtos_types[x] == NULL) {
			Jim_SetResultFormatted(goi->interp, "Unknown rtos type %s, try one of ", cp);
			for (x = 0 ; rtos_types[x] ; x++) {
				if (rtos_types[x + 1]) {
					Jim_AppendStrings(goi->interp,
									   Jim_GetResult(goi->interp),
									   rtos_types[x]->name,
									   ", ", NULL);
				} else {
					Jim_AppendStrings(goi->interp,
									   Jim_GetResult(goi->interp),
									   " or ",
									   rtos_types[x]->name,NULL);
				}
			}
			return JIM_ERR;
		}
	}
	/* Create it */
	target->rtos = calloc(1,sizeof(struct rtos));
	target->rtos->type = rtos_types[x];
122
	target->rtos->current_threadid = -1;
123
124
125
	target->rtos->current_thread = 0;
	target->rtos->symbols = NULL;
	target->rtos->target = target;
126
127
	/* put default thread handler in linux usecase it is overloaded*/
	target->rtos->gdb_thread_packet = rtos_thread_packet;
128
129
130
131
132
133
134
135
136

	if ( 0 != strcmp( cp, "auto") )
	{
		target->rtos->type->create( target );
	}

	return JIM_OK;
}

137
138
139
140
141
142
143
int gdb_thread_packet(struct connection *connection, char *packet, int packet_size)
{
	struct target *target = get_target_from_connection(connection);
	if (target->rtos == NULL)
		return rtos_thread_packet(connection, packet, packet_size); /* thread not found*/
	return target->rtos->gdb_thread_packet(connection, packet, packet_size);
}
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/* return -1 if no rtos defined, 0 if rtos and symbol to be asked, 1 if all
 * symbol have been asked*/
int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
{
	struct target *target = get_target_from_connection(connection);
	if (target->rtos != NULL) {
		int next_symbol_num = -1;
		if (target->rtos->symbols == NULL)
			target->rtos->type->get_symbol_list_to_lookup(&target->rtos->symbols);
		if (0 == strcmp("qSymbol::", packet))
			/* first query - */
			next_symbol_num = 0;
		else {
			int64_t value = 0;
			char *hex_name_str = malloc(strlen(packet));
			char *name_str;
			int symbol_num;

			char *found = strstr(packet, "qSymbol::");
			if (0 == found)
				sscanf(packet, "qSymbol:%" SCNx64 ":%s", &value, hex_name_str);
			else
				/* No value returned by GDB - symbol was not found*/
				sscanf(packet, "qSymbol::%s", hex_name_str);
			name_str = (char *) malloc(1 + strlen(hex_name_str) / 2);

			hex_to_str(name_str, hex_name_str);
			symbol_num = 0;
			while ((target->rtos->symbols[symbol_num].symbol_name != NULL)
					&& (0 != strcmp(target->rtos->symbols[symbol_num].symbol_name, name_str)))
				symbol_num++;

			if (target->rtos->symbols[symbol_num].symbol_name == NULL) {
				LOG_OUTPUT("ERROR: unknown symbol\r\n");
				gdb_put_packet(connection, "OK", 2);
				return ERROR_OK;
			}
181

182
183
184
185
186
187
			target->rtos->symbols[symbol_num].address = value;

			next_symbol_num = symbol_num+1;
			free(hex_name_str);
			free(name_str);
		}
188

189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
		int symbols_done = 0;
		if (target->rtos->symbols[next_symbol_num].symbol_name == NULL) {
			if ((target->rtos_auto_detect == false) ||
					(1 == target->rtos->type->detect_rtos(target))) {
				/* Found correct RTOS or not autodetecting */
				if (target->rtos_auto_detect == true)
					LOG_OUTPUT("Auto-detected RTOS: %s\r\n", target->rtos->type->name);
				symbols_done = 1;
			} else {
				/* Auto detecting RTOS and currently not found */
				if (1 != rtos_try_next(target))
					/* No more RTOS's to try */
					symbols_done = 1;
				else {
					next_symbol_num = 0;
					target->rtos->type->get_symbol_list_to_lookup(&target->rtos->symbols);
				}
			}
		}
		if (symbols_done == 1)
			return symbols_done;
		else {
			char *symname = target->rtos->symbols[next_symbol_num].symbol_name;
			char qsymstr[] = "qSymbol:";
			char *opstring = (char *)malloc(sizeof(qsymstr)+strlen(symname)*2+1);
			char *posptr = opstring;
			posptr += sprintf(posptr, "%s", qsymstr);
			str_to_hex(posptr, symname);
			gdb_put_packet(connection, opstring, strlen(opstring));
			free(opstring);
			return symbols_done;
		}
	}
	gdb_put_packet(connection, "OK", 2);
	return -1;
}
225

226
227

int rtos_thread_packet(struct connection *connection, char *packet, int packet_size)
228
{
229
230
	struct target *target = get_target_from_connection(connection);

231
	if (strstr(packet, "qThreadExtraInfo,"))
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
	{
		if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) && (target->rtos->thread_count != 0))
		{
			threadid_t threadid = 0;
			int found = -1;
			sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid );

			if ((target->rtos != NULL) && (target->rtos->thread_details
					!= NULL)) {
				int thread_num;
				for (thread_num = 0; thread_num
						< target->rtos->thread_count; thread_num++) {
					if (target->rtos->thread_details[thread_num].threadid
							== threadid) {
						if (target->rtos->thread_details[thread_num].exists) {
							found = thread_num;
						}
					}
				}
			}
			if (found == -1) {
				gdb_put_packet(connection, "E01", 3); // thread not found
				return ERROR_OK;
			}

			struct thread_detail* detail = &target->rtos->thread_details[found];

			int str_size = 0;
			if ( detail->display_str != NULL )
			{
				str_size += strlen(detail->display_str);
			}
			if ( detail->thread_name_str != NULL )
			{
				str_size += strlen(detail->thread_name_str);
			}
			if ( detail->extra_info_str != NULL )
			{
				str_size += strlen(detail->extra_info_str);
			}

			char * tmp_str = (char*) malloc( str_size + 7 );
			char*  tmp_str_ptr = tmp_str;

			if ( detail->display_str != NULL )
			{
				tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->display_str );
			}
			if ( detail->thread_name_str != NULL )
			{
				if ( tmp_str_ptr != tmp_str )
				{
					tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
				}
				tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->thread_name_str );
			}
			if ( detail->extra_info_str != NULL )
			{
				if ( tmp_str_ptr != tmp_str )
				{
					tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
				}
				tmp_str_ptr += sprintf( tmp_str_ptr, " : %s", detail->extra_info_str );
			}

297
298
299
			assert(strlen(tmp_str) ==
				(size_t) (tmp_str_ptr - tmp_str));

300
301
302
303
304
305
306
307
308
309
310
311
312
313
			char * hex_str = (char*) malloc( strlen(tmp_str)*2 +1 );
			str_to_hex( hex_str, tmp_str );

			gdb_put_packet(connection, hex_str, strlen(hex_str));
			free(hex_str);
			free(tmp_str);
			return ERROR_OK;

		}
		gdb_put_packet(connection, "", 0);
		return ERROR_OK;
	}
	else if (strstr(packet, "qSymbol"))
	{
314
		if (rtos_qsymbol(connection, packet, packet_size) == 1)
315
		{
316
317
318
319
320
			target->rtos_auto_detect = false;
			target->rtos->type->create(target);
			target->rtos->type->update_threads(target->rtos);
			/* No more symbols needed */
			gdb_put_packet(connection, "OK", 2);
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
		}
		return ERROR_OK;
	}
	else if (strstr(packet, "qfThreadInfo"))
	{
		int i;
		if ( ( target->rtos != NULL ) && ( target->rtos->thread_count != 0 ) )
		{

			char* out_str = (char*) malloc(17 * target->rtos->thread_count + 5);
			char* tmp_str = out_str;
			tmp_str += sprintf(tmp_str, "m");
			for (i = 0; i < target->rtos->thread_count; i++) {
				if (i != 0) {
					tmp_str += sprintf(tmp_str, ",");
				}
				tmp_str += sprintf(tmp_str, "%016" PRIx64,
						target->rtos->thread_details[i].threadid);
			}
			tmp_str[0] = 0;
			gdb_put_packet(connection, out_str, strlen(out_str));
		}
		else
		{
			gdb_put_packet(connection, "", 0);
		}

		return ERROR_OK;
	}
	else if (strstr(packet, "qsThreadInfo"))
	{
		gdb_put_packet(connection, "l", 1);
		return ERROR_OK;
	}
	else if (strstr(packet, "qAttached"))
	{
		gdb_put_packet(connection, "1", 1);
		return ERROR_OK;
	}
	else if (strstr(packet, "qOffsets"))
	{
		char offsets[] = "Text=0;Data=0;Bss=0";
		gdb_put_packet(connection, offsets, sizeof(offsets)-1);
		return ERROR_OK;
	}
	else if (strstr(packet, "qC"))
	{
Alan Bowman's avatar
Alan Bowman committed
368
369
370
371
372
373
374
375
376
377
378
		if( target->rtos!=NULL )
		{
			char buffer[15];
			int size;
			size = snprintf(buffer, 15, "QC%08X", (int)target->rtos->current_thread);
			gdb_put_packet(connection, buffer, size);
		}
		else
		{
			gdb_put_packet(connection, "QC0", 3);
		}
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
		return ERROR_OK;
	}
	else if ( packet[0] == 'T' ) // Is thread alive?
	{
		threadid_t threadid;
		int found = -1;
		sscanf(packet, "T%" SCNx64, &threadid);
		if ((target->rtos != NULL) && (target->rtos->thread_details
				!= NULL)) {
			int thread_num;
			for (thread_num = 0; thread_num
					< target->rtos->thread_count; thread_num++) {
				if (target->rtos->thread_details[thread_num].threadid
						== threadid) {
					if (target->rtos->thread_details[thread_num].exists) {
						found = thread_num;
					}
				}
			}
		}
		if (found != -1) {
			gdb_put_packet(connection, "OK", 2); // thread alive
		} else {
			gdb_put_packet(connection, "E01", 3); // thread not found
		}
404
		return ERROR_OK;
405
406
407
	}
	else if ( packet[0] == 'H') // Set current thread ( 'c' for step and continue, 'g' for all other operations )
	{
408
		if ((packet[1] == 'g') && (target->rtos != NULL))
409
			sscanf(packet, "Hg%16" SCNx64, &target->rtos->current_threadid);
410
		gdb_put_packet(connection, "OK", 2);
411
		return ERROR_OK;
412
413
414
415
416
	}

	return GDB_THREAD_PACKET_NOT_CONSUMED;
}

Michel JAOUEN's avatar
Michel JAOUEN committed
417
int rtos_get_gdb_reg_list(struct connection *connection)
418
{
419
	struct target *target = get_target_from_connection(connection);
420
	int64_t current_threadid = target->rtos->current_threadid;
Michel JAOUEN's avatar
Michel JAOUEN committed
421
422
423
424
425
	if ((target->rtos != NULL) &&
		 (current_threadid != -1) &&
		 (current_threadid != 0) &&
		 ((current_threadid != target->rtos->current_thread) ||
		 (target->smp))) /* in smp several current thread are possible */
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
	{
		char * hex_reg_list;
		target->rtos->type->get_thread_reg_list( target->rtos, current_threadid, &hex_reg_list );

		if ( hex_reg_list != NULL )
		{
			gdb_put_packet(connection, hex_reg_list, strlen(hex_reg_list));
			free(hex_reg_list);
			return ERROR_OK;
		}
	}
	return ERROR_FAIL;
}



442
int rtos_generic_stack_read( struct target * target, const struct rtos_register_stacking* stacking, int64_t stack_ptr, char ** hex_reg_list )
443
444
445
{
	int list_size = 0;
	char * tmp_str_ptr;
446
	int64_t new_stack_ptr;
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
	int i;
	int retval;

	if ( stack_ptr == 0)
	{
		LOG_OUTPUT("Error: null stack pointer in thread\r\n");
		return -5;
	}
	// Read the stack
	uint8_t * stack_data = (uint8_t*) malloc( stacking->stack_registers_size );
	uint32_t address = stack_ptr;

	if ( stacking->stack_growth_direction == 1 )
	{
		address -=  stacking->stack_registers_size;
	}
463
	retval = target_read_buffer( target, address, stacking->stack_registers_size, stack_data);
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
	if ( retval != ERROR_OK )
	{
		LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
		return retval;
	}
/*
	LOG_OUTPUT("Stack Data :");
	for(i = 0; i < stacking->stack_registers_size; i++ )
	{
		LOG_OUTPUT("%02X",stack_data[i]);
	}
	LOG_OUTPUT("\r\n");
*/
	for( i = 0; i < stacking->num_output_registers; i++ )
	{
		list_size += stacking->register_offsets[i].width_bits/8;
	}
	*hex_reg_list = (char*)malloc( list_size*2 +1 );
	tmp_str_ptr = *hex_reg_list;
483
	new_stack_ptr = stack_ptr - stacking->stack_growth_direction * stacking->stack_registers_size;
484
485
486
487
488
489
	if (stacking->stack_alignment != 0) {
		/* Align new stack pointer to x byte boundary */
		new_stack_ptr =
			(new_stack_ptr & (~((int64_t) stacking->stack_alignment - 1))) +
			((stacking->stack_growth_direction == -1) ? stacking->stack_alignment : 0);
	}
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
	for( i = 0; i < stacking->num_output_registers; i++ )
	{
		int j;
		for ( j = 0; j < stacking->register_offsets[i].width_bits/8; j++ )
		{
			if ( stacking->register_offsets[i].offset == -1 )
			{
				tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", 0 );
			}
			else if ( stacking->register_offsets[i].offset == -2 )
			{
				tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", ((uint8_t*)&new_stack_ptr)[j] );
			}
			else
			{
				tmp_str_ptr += sprintf( tmp_str_ptr,"%02x", stack_data[ stacking->register_offsets[i].offset + j ] );
			}
		}
	}
//	LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list);
	return ERROR_OK;
}

int rtos_try_next( struct target * target )
{
	int x;

	if ( target->rtos == NULL )
	{
		return -1;
	}

	for (x = 0 ; rtos_types[x] ; x++) {
		if (target->rtos->type == rtos_types[x] ) {
			/* found */
			if ( rtos_types[x+1] != NULL )
			{
				target->rtos->type = rtos_types[x+1];
				if ( target->rtos->symbols != NULL )
				{
					free( target->rtos->symbols );
				}
				return 1;
			}
			else
			{
				// No more rtos types
				return 0;
			}

		}
	}
	return 0;

}

static void hex_to_str( char* dst, char * hex_src )
{
	int src_pos = 0;
	int dst_pos = 0;

	while ( hex_src[src_pos] != '\x00' )
	{
		char hex_char = hex_src[src_pos];
		char hex_digit_val = (hex_char>='a')?hex_char-'a'+10:(hex_char>='A')?hex_char-'A'+10:hex_char-'0';
		if ( 0 == (src_pos & 0x01) )
		{
			dst[dst_pos] = hex_digit_val;
			dst[dst_pos+1] = 0;
		}
		else
		{
			((unsigned char*)dst)[dst_pos] <<= 4;
			((unsigned char*)dst)[dst_pos] += hex_digit_val;
			dst_pos++;
		}
		src_pos++;
	}

}

571
int str_to_hex(char *hex_dst, char *src)
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
{
	char * posptr = hex_dst;
	unsigned i;
	for( i = 0; i < strlen(src); i++)
	{
		posptr += sprintf( posptr, "%02x", (unsigned char)src[i] );
	}
	return (posptr-hex_dst);
}


int rtos_update_threads( struct target* target )
{
	if ((target->rtos != NULL) && (target->rtos->type != NULL))
	{
		target->rtos->type->update_threads(target->rtos);
	}
	return ERROR_OK;
}