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coding style: fix multi-line dereferencing
[openocd.git] / src / rtos / linux.c
1 /***************************************************************************
2 * Copyright (C) 2011 by STEricsson *
3 * Heythem Bouhaja heythem.bouhaja@stericsson.com : creation *
4 * Michel JAOUEN michel.jaouen@stericsson.com : adaptation to rtos *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <helper/time_support.h>
25 #include <jtag/jtag.h>
26 #include "target/target.h"
27 #include "target/target_type.h"
28 #include "helper/log.h"
29 #include "helper/types.h"
30 #include "rtos.h"
31 #include "rtos_standard_stackings.h"
32 #include <target/register.h>
33 #include "server/gdb_server.h"
34
35 #define LINUX_USER_KERNEL_BORDER 0xc0000000
36 #include "linux_header.h"
37 #define PHYS
38 #define MAX_THREADS 200
39 /* specific task */
40 struct linux_os {
41 const char *name;
42 uint32_t init_task_addr;
43 int thread_count;
44 int threadid_count;
45 int preupdtate_threadid_count;
46 int nr_cpus;
47 int threads_lookup;
48 int threads_needs_update;
49 struct current_thread *current_threads;
50 struct threads *thread_list;
51 /* virt2phys parameter */
52 uint32_t phys_mask;
53 uint32_t phys_base;
54 };
55
56 struct current_thread {
57 int64_t threadid;
58 int32_t core_id;
59 #ifdef PID_CHECK
60 uint32_t pid;
61 #endif
62 uint32_t TS;
63 struct current_thread *next;
64 };
65
66 struct threads {
67 char name[17];
68 uint32_t base_addr; /* address to read magic */
69 uint32_t state; /* magic value : filled only at creation */
70 uint32_t pid; /* linux pid : id for identifying a thread */
71 uint32_t oncpu; /* content cpu number in current thread */
72 uint32_t asid; /* filled only at creation */
73 int64_t threadid;
74 int status; /* dead = 1 alive = 2 current = 3 alive and current */
75 /* value that should not change during the live of a thread ? */
76 uint32_t thread_info_addr; /* contain latest thread_info_addr computed */
77 /* retrieve from thread_info */
78 struct cpu_context *context;
79 struct threads *next;
80 };
81
82 struct cpu_context {
83 uint32_t R4;
84 uint32_t R5;
85 uint32_t R6;
86 uint32_t R7;
87 uint32_t R8;
88 uint32_t R9;
89 uint32_t IP;
90 uint32_t FP;
91 uint32_t SP;
92 uint32_t PC;
93 uint32_t preempt_count;
94 };
95 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
96 uint32_t *info_addr);
97 static int insert_into_threadlist(struct target *target, struct threads *t);
98
99 static int linux_os_create(struct target *target);
100
101 static int linux_os_dummy_update(struct rtos *rtos)
102 {
103 /* update is done only when thread request come
104 * too many thread to do it on each stop */
105 return 0;
106 }
107
108 static int linux_compute_virt2phys(struct target *target, target_addr_t address)
109 {
110 struct linux_os *linux_os = (struct linux_os *)
111 target->rtos->rtos_specific_params;
112 target_addr_t pa = 0;
113 int retval = target->type->virt2phys(target, address, &pa);
114 if (retval != ERROR_OK) {
115 LOG_ERROR("Cannot compute linux virt2phys translation");
116 /* fixes default address */
117 linux_os->phys_base = 0;
118 return ERROR_FAIL;
119 }
120
121 linux_os->init_task_addr = address;
122 address = address & linux_os->phys_mask;
123 linux_os->phys_base = pa - address;
124 return ERROR_OK;
125 }
126
127 static int linux_read_memory(struct target *target,
128 uint32_t address, uint32_t size, uint32_t count,
129 uint8_t *buffer)
130 {
131 #ifdef PHYS
132 struct linux_os *linux_os = (struct linux_os *)
133 target->rtos->rtos_specific_params;
134 uint32_t pa = (address & linux_os->phys_mask) + linux_os->phys_base;
135 #endif
136 if (address < 0xc000000) {
137 LOG_ERROR("linux awareness : address in user space");
138 return ERROR_FAIL;
139 }
140 #ifdef PHYS
141 target_read_phys_memory(target, pa, size, count, buffer);
142 #endif
143 target_read_memory(target, address, size, count, buffer);
144 return ERROR_OK;
145 }
146
147 int fill_buffer(struct target *target, uint32_t addr, uint8_t *buffer)
148 {
149
150 if ((addr & 0xfffffffc) != addr)
151 LOG_INFO("unaligned address %" PRIx32 "!!", addr);
152
153 int retval = linux_read_memory(target, addr, 4, 1, buffer);
154 return retval;
155
156 }
157
158 uint32_t get_buffer(struct target *target, const uint8_t *buffer)
159 {
160 uint32_t value = 0;
161 const uint8_t *value_ptr = buffer;
162 value = target_buffer_get_u32(target, value_ptr);
163 return value;
164 }
165
166 static int linux_os_thread_reg_list(struct rtos *rtos,
167 int64_t thread_id, struct rtos_reg **reg_list, int *num_regs)
168 {
169 struct target *target = rtos->target;
170 struct linux_os *linux_os = (struct linux_os *)
171 target->rtos->rtos_specific_params;
172 struct current_thread *tmp = linux_os->current_threads;
173 struct current_thread *next;
174 int found = 0;
175 int retval;
176 /* check if a current thread is requested */
177 next = tmp;
178
179 do {
180 if (next->threadid == thread_id)
181 found = 1;
182 else
183 next = next->next;
184 } while ((found == 0) && (next != tmp) && (next != NULL));
185
186 if (found == 0) {
187 LOG_ERROR("could not find thread: %" PRIx64, thread_id);
188 return ERROR_FAIL;
189 }
190
191 /* search target to perfom the access */
192 struct reg **gdb_reg_list;
193 struct target_list *head;
194 head = target->head;
195 found = 0;
196 do {
197 if (head->target->coreid == next->core_id) {
198
199 target = head->target;
200 found = 1;
201 } else
202 head = head->next;
203
204 } while ((head != (struct target_list *)NULL) && (found == 0));
205
206 if (found == 0) {
207 LOG_ERROR
208 (
209 "current thread %" PRIx64 ": no target to perform access of core id %" PRIx32,
210 thread_id,
211 next->core_id);
212 return ERROR_FAIL;
213 }
214
215 /*LOG_INFO("thread %lx current on core %x",thread_id, target->coreid);*/
216 retval = target_get_gdb_reg_list(target, &gdb_reg_list, num_regs, REG_CLASS_GENERAL);
217 if (retval != ERROR_OK)
218 return retval;
219
220 *reg_list = calloc(*num_regs, sizeof(struct rtos_reg));
221
222 for (int i = 0; i < *num_regs; ++i) {
223 if (!gdb_reg_list[i]->valid)
224 gdb_reg_list[i]->type->get(gdb_reg_list[i]);
225
226 (*reg_list)[i].number = gdb_reg_list[i]->number;
227 (*reg_list)[i].size = gdb_reg_list[i]->size;
228
229 buf_cpy(gdb_reg_list[i]->value, (*reg_list)[i].value, (*reg_list)[i].size);
230 }
231
232 return ERROR_OK;
233 }
234
235 static bool linux_os_detect(struct target *target)
236 {
237 LOG_INFO("should no be called");
238 return false;
239 }
240
241 static int linux_os_smp_init(struct target *target);
242 static int linux_os_clean(struct target *target);
243 #define INIT_TASK 0
244 static const char * const linux_symbol_list[] = {
245 "init_task",
246 NULL
247 };
248
249 static int linux_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[])
250 {
251 unsigned int i;
252 *symbol_list = (symbol_table_elem_t *)
253 calloc(ARRAY_SIZE(linux_symbol_list), sizeof(symbol_table_elem_t));
254
255 for (i = 0; i < ARRAY_SIZE(linux_symbol_list); i++)
256 (*symbol_list)[i].symbol_name = linux_symbol_list[i];
257
258 return 0;
259 }
260
261 static char *linux_ps_command(struct target *target);
262
263 const struct rtos_type Linux_os = {
264 .name = "linux",
265 .detect_rtos = linux_os_detect,
266 .create = linux_os_create,
267 .smp_init = linux_os_smp_init,
268 .update_threads = linux_os_dummy_update,
269 .get_thread_reg_list = linux_os_thread_reg_list,
270 .get_symbol_list_to_lookup = linux_get_symbol_list_to_lookup,
271 .clean = linux_os_clean,
272 .ps_command = linux_ps_command,
273 };
274
275 static int linux_thread_packet(struct connection *connection, char const *packet,
276 int packet_size);
277 static void linux_identify_current_threads(struct target *target);
278
279 #ifdef PID_CHECK
280 int fill_task_pid(struct target *target, struct threads *t)
281 {
282 uint32_t pid_addr = t->base_addr + PID;
283 uint8_t buffer[4];
284 int retval = fill_buffer(target, pid_addr, buffer);
285
286 if (retval == ERROR_OK) {
287 uint32_t val = get_buffer(target, buffer);
288 t->pid = val;
289 } else
290 LOG_ERROR("fill_task_pid: unable to read memory");
291
292 return retval;
293 }
294 #endif
295
296 int fill_task(struct target *target, struct threads *t)
297 {
298 int retval;
299 uint32_t pid_addr = t->base_addr + PID;
300 uint32_t mem_addr = t->base_addr + MEM;
301 uint32_t on_cpu = t->base_addr + ONCPU;
302 uint8_t *buffer = calloc(1, 4);
303 retval = fill_buffer(target, t->base_addr, buffer);
304
305 if (retval == ERROR_OK) {
306 uint32_t val = get_buffer(target, buffer);
307 t->state = val;
308 } else
309 LOG_ERROR("fill_task: unable to read memory");
310
311 retval = fill_buffer(target, pid_addr, buffer);
312
313 if (retval == ERROR_OK) {
314 uint32_t val = get_buffer(target, buffer);
315 t->pid = val;
316 } else
317 LOG_ERROR("fill task: unable to read memory");
318
319 retval = fill_buffer(target, on_cpu, buffer);
320
321 if (retval == ERROR_OK) {
322 uint32_t val = get_buffer(target, buffer);
323 t->oncpu = val;
324 } else
325 LOG_ERROR("fill task: unable to read memory");
326
327 retval = fill_buffer(target, mem_addr, buffer);
328
329 if (retval == ERROR_OK) {
330 uint32_t val = get_buffer(target, buffer);
331
332 if (val != 0) {
333 uint32_t asid_addr = val + MM_CTX;
334 retval = fill_buffer(target, asid_addr, buffer);
335
336 if (retval == ERROR_OK) {
337 val = get_buffer(target, buffer);
338 t->asid = val;
339 } else
340 LOG_ERROR
341 ("fill task: unable to read memory -- ASID");
342 } else
343 t->asid = 0;
344 } else
345 LOG_ERROR("fill task: unable to read memory");
346
347 free(buffer);
348
349 return retval;
350 }
351
352 int get_name(struct target *target, struct threads *t)
353 {
354 int retval;
355 uint32_t full_name[4];
356 uint32_t comm = t->base_addr + COMM;
357 int i;
358
359 for (i = 0; i < 17; i++)
360 t->name[i] = 0;
361
362 retval = linux_read_memory(target, comm, 4, 4, (uint8_t *) full_name);
363
364 if (retval != ERROR_OK) {
365 LOG_ERROR("get_name: unable to read memory\n");
366 return ERROR_FAIL;
367 }
368
369 uint32_t raw_name = target_buffer_get_u32(target,
370 (const uint8_t *)
371 &full_name[0]);
372 t->name[3] = raw_name >> 24;
373 t->name[2] = raw_name >> 16;
374 t->name[1] = raw_name >> 8;
375 t->name[0] = raw_name;
376 raw_name =
377 target_buffer_get_u32(target, (const uint8_t *)&full_name[1]);
378 t->name[7] = raw_name >> 24;
379 t->name[6] = raw_name >> 16;
380 t->name[5] = raw_name >> 8;
381 t->name[4] = raw_name;
382 raw_name =
383 target_buffer_get_u32(target, (const uint8_t *)&full_name[2]);
384 t->name[11] = raw_name >> 24;
385 t->name[10] = raw_name >> 16;
386 t->name[9] = raw_name >> 8;
387 t->name[8] = raw_name;
388 raw_name =
389 target_buffer_get_u32(target, (const uint8_t *)&full_name[3]);
390 t->name[15] = raw_name >> 24;
391 t->name[14] = raw_name >> 16;
392 t->name[13] = raw_name >> 8;
393 t->name[12] = raw_name;
394 return ERROR_OK;
395
396 }
397
398 int get_current(struct target *target, int create)
399 {
400 struct target_list *head;
401 head = target->head;
402 uint8_t *buf;
403 uint32_t val;
404 uint32_t ti_addr;
405 uint8_t *buffer = calloc(1, 4);
406 struct linux_os *linux_os = (struct linux_os *)
407 target->rtos->rtos_specific_params;
408 struct current_thread *ctt = linux_os->current_threads;
409
410 /* invalid current threads content */
411 while (ctt != NULL) {
412 ctt->threadid = -1;
413 ctt->TS = 0xdeadbeef;
414 ctt = ctt->next;
415 }
416
417 while (head != (struct target_list *)NULL) {
418 struct reg **reg_list;
419 int reg_list_size;
420 int retval;
421
422 if (target_get_gdb_reg_list(head->target, &reg_list,
423 &reg_list_size, REG_CLASS_GENERAL) != ERROR_OK) {
424 free(buffer);
425 return ERROR_TARGET_FAILURE;
426 }
427
428 if (!reg_list[13]->valid)
429 reg_list[13]->type->get(reg_list[13]);
430
431 buf = reg_list[13]->value;
432 val = get_buffer(target, buf);
433 ti_addr = (val & 0xffffe000);
434 uint32_t TS_addr = ti_addr + 0xc;
435 retval = fill_buffer(target, TS_addr, buffer);
436
437 if (retval == ERROR_OK) {
438 uint32_t TS = get_buffer(target, buffer);
439 uint32_t cpu, on_cpu = TS + ONCPU;
440 retval = fill_buffer(target, on_cpu, buffer);
441
442 if (retval == ERROR_OK) {
443 /*uint32_t cpu = get_buffer(target, buffer);*/
444 struct current_thread *ct =
445 linux_os->current_threads;
446 cpu = head->target->coreid;
447
448 while ((ct != NULL) && (ct->core_id != (int32_t) cpu))
449 ct = ct->next;
450
451 if ((ct != NULL) && (ct->TS == 0xdeadbeef))
452 ct->TS = TS;
453 else
454 LOG_ERROR
455 ("error in linux current thread update");
456
457 if (create && ct) {
458 struct threads *t;
459 t = calloc(1, sizeof(struct threads));
460 t->base_addr = ct->TS;
461 fill_task(target, t);
462 get_name(target, t);
463 t->oncpu = cpu;
464 insert_into_threadlist(target, t);
465 t->status = 3;
466 t->thread_info_addr = 0xdeadbeef;
467 ct->threadid = t->threadid;
468 linux_os->thread_count++;
469 #ifdef PID_CHECK
470 ct->pid = t->pid;
471 #endif
472 /*LOG_INFO("Creation of current thread %s",t->name);*/
473 }
474 }
475 }
476
477 free(reg_list);
478 head = head->next;
479 }
480
481 free(buffer);
482
483 return ERROR_OK;
484 }
485
486 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
487 uint32_t *thread_info_addr_old)
488 {
489 struct cpu_context *context = calloc(1, sizeof(struct cpu_context));
490 uint32_t preempt_count_addr = 0;
491 uint32_t registers[10];
492 uint8_t *buffer = calloc(1, 4);
493 uint32_t stack = base_addr + QAT;
494 uint32_t thread_info_addr = 0;
495 uint32_t thread_info_addr_update = 0;
496 int retval = ERROR_FAIL;
497 context->R4 = 0xdeadbeef;
498 context->R5 = 0xdeadbeef;
499 context->R6 = 0xdeadbeef;
500 context->R7 = 0xdeadbeef;
501 context->R8 = 0xdeadbeef;
502 context->R9 = 0xdeadbeef;
503 context->IP = 0xdeadbeef;
504 context->FP = 0xdeadbeef;
505 context->SP = 0xdeadbeef;
506 context->PC = 0xdeadbeef;
507 retry:
508
509 if (*thread_info_addr_old == 0xdeadbeef) {
510 retval = fill_buffer(target, stack, buffer);
511
512 if (retval == ERROR_OK)
513 thread_info_addr = get_buffer(target, buffer);
514 else
515 LOG_ERROR("cpu_context: unable to read memory");
516
517 thread_info_addr_update = thread_info_addr;
518 } else
519 thread_info_addr = *thread_info_addr_old;
520
521 preempt_count_addr = thread_info_addr + PREEMPT;
522 retval = fill_buffer(target, preempt_count_addr, buffer);
523
524 if (retval == ERROR_OK)
525 context->preempt_count = get_buffer(target, buffer);
526 else {
527 if (*thread_info_addr_old != 0xdeadbeef) {
528 LOG_ERROR
529 ("cpu_context: cannot read at thread_info_addr");
530
531 if (*thread_info_addr_old < LINUX_USER_KERNEL_BORDER)
532 LOG_INFO
533 ("cpu_context : thread_info_addr in userspace!!!");
534
535 *thread_info_addr_old = 0xdeadbeef;
536 goto retry;
537 }
538
539 LOG_ERROR("cpu_context: unable to read memory");
540 }
541
542 thread_info_addr += CPU_CONT;
543
544 retval = linux_read_memory(target, thread_info_addr, 4, 10,
545 (uint8_t *) registers);
546
547 if (retval != ERROR_OK) {
548 free(buffer);
549 LOG_ERROR("cpu_context: unable to read memory\n");
550 return context;
551 }
552
553 context->R4 =
554 target_buffer_get_u32(target, (const uint8_t *)&registers[0]);
555 context->R5 =
556 target_buffer_get_u32(target, (const uint8_t *)&registers[1]);
557 context->R6 =
558 target_buffer_get_u32(target, (const uint8_t *)&registers[2]);
559 context->R7 =
560 target_buffer_get_u32(target, (const uint8_t *)&registers[3]);
561 context->R8 =
562 target_buffer_get_u32(target, (const uint8_t *)&registers[4]);
563 context->R9 =
564 target_buffer_get_u32(target, (const uint8_t *)&registers[5]);
565 context->IP =
566 target_buffer_get_u32(target, (const uint8_t *)&registers[6]);
567 context->FP =
568 target_buffer_get_u32(target, (const uint8_t *)&registers[7]);
569 context->SP =
570 target_buffer_get_u32(target, (const uint8_t *)&registers[8]);
571 context->PC =
572 target_buffer_get_u32(target, (const uint8_t *)&registers[9]);
573
574 if (*thread_info_addr_old == 0xdeadbeef)
575 *thread_info_addr_old = thread_info_addr_update;
576
577 free(buffer);
578
579 return context;
580 }
581
582 uint32_t next_task(struct target *target, struct threads *t)
583 {
584 uint8_t *buffer = calloc(1, 4);
585 uint32_t next_addr = t->base_addr + NEXT;
586 int retval = fill_buffer(target, next_addr, buffer);
587
588 if (retval == ERROR_OK) {
589 uint32_t val = get_buffer(target, buffer);
590 val = val - NEXT;
591 free(buffer);
592 return val;
593 } else
594 LOG_ERROR("next task: unable to read memory");
595
596 free(buffer);
597
598 return 0;
599 }
600
601 struct current_thread *add_current_thread(struct current_thread *currents,
602 struct current_thread *ct)
603 {
604 ct->next = NULL;
605
606 if (currents == NULL) {
607 currents = ct;
608 return currents;
609 } else {
610 struct current_thread *temp = currents;
611
612 while (temp->next != NULL)
613 temp = temp->next;
614
615 temp->next = ct;
616 return currents;
617 }
618 }
619
620 struct threads *liste_del_task(struct threads *task_list, struct threads **t,
621 struct threads *prev)
622 {
623 LOG_INFO("del task %" PRId64, (*t)->threadid);
624 if (prev)
625 prev->next = (*t)->next;
626 else
627 task_list = (*t)->next;
628
629 /* free content of threads */
630 if ((*t)->context)
631 free((*t)->context);
632
633 free(*t);
634 *t = prev ? prev : task_list;
635 return task_list;
636 }
637
638 struct threads *liste_add_task(struct threads *task_list, struct threads *t,
639 struct threads **last)
640 {
641 t->next = NULL;
642
643 if (*last == NULL)
644 if (task_list == NULL) {
645 task_list = t;
646 return task_list;
647 } else {
648 struct threads *temp = task_list;
649
650 while (temp->next != NULL)
651 temp = temp->next;
652
653 temp->next = t;
654 *last = t;
655 return task_list;
656 } else {
657 (*last)->next = t;
658 *last = t;
659 return task_list;
660 }
661 }
662
663 #ifdef PID_CHECK
664 static int current_pid(struct linux_os *linux_os, uint32_t pid)
665 #else
666 static int current_base_addr(struct linux_os *linux_os, uint32_t base_addr)
667 #endif
668 {
669 struct current_thread *ct = linux_os->current_threads;
670 #ifdef PID_CHECK
671
672 while ((ct != NULL) && (ct->pid != pid))
673 #else
674 while ((ct != NULL) && (ct->TS != base_addr))
675 #endif
676 ct = ct->next;
677 #ifdef PID_CHECK
678 if ((ct != NULL) && (ct->pid == pid))
679 #else
680 if ((ct != NULL) && (ct->TS == base_addr))
681 #endif
682 return 1;
683
684 return 0;
685 }
686
687 int linux_get_tasks(struct target *target, int context)
688 {
689 int loop = 0;
690 int retval = 0;
691 struct linux_os *linux_os = (struct linux_os *)
692 target->rtos->rtos_specific_params;
693 linux_os->thread_list = NULL;
694 linux_os->thread_count = 0;
695
696 if (linux_os->init_task_addr == 0xdeadbeef) {
697 LOG_INFO("no init symbol\n");
698 return ERROR_FAIL;
699 }
700
701 int64_t start = timeval_ms();
702
703 struct threads *t = calloc(1, sizeof(struct threads));
704 struct threads *last = NULL;
705 t->base_addr = linux_os->init_task_addr;
706 /* retrieve the thread id , currently running in the different smp core */
707 get_current(target, 1);
708
709 while (((t->base_addr != linux_os->init_task_addr) &&
710 (t->base_addr != 0)) || (loop == 0)) {
711 loop++;
712 fill_task(target, t);
713 retval = get_name(target, t);
714
715 if (loop > MAX_THREADS) {
716 free(t);
717 LOG_INFO("more than %d threads !!", MAX_THREADS);
718 return ERROR_FAIL;
719 }
720
721 if (retval != ERROR_OK) {
722 free(t);
723 return ERROR_FAIL;
724 }
725
726 /* check that this thread is not one the current threads already
727 * created */
728 uint32_t base_addr;
729 #ifdef PID_CHECK
730
731 if (!current_pid(linux_os, t->pid)) {
732 #else
733 if (!current_base_addr(linux_os, t->base_addr)) {
734 #endif
735 t->threadid = linux_os->threadid_count;
736 t->status = 1;
737 linux_os->threadid_count++;
738
739 linux_os->thread_list =
740 liste_add_task(linux_os->thread_list, t, &last);
741 /* no interest to fill the context if it is a current thread. */
742 linux_os->thread_count++;
743 t->thread_info_addr = 0xdeadbeef;
744
745 if (context)
746 t->context =
747 cpu_context_read(target, t->base_addr,
748 &t->thread_info_addr);
749 base_addr = next_task(target, t);
750 } else {
751 /*LOG_INFO("thread %s is a current thread already created",t->name); */
752 base_addr = next_task(target, t);
753 free(t);
754 }
755
756 t = calloc(1, sizeof(struct threads));
757 t->base_addr = base_addr;
758 }
759
760 linux_os->threads_lookup = 1;
761 linux_os->threads_needs_update = 0;
762 linux_os->preupdtate_threadid_count = linux_os->threadid_count - 1;
763 /* check that all current threads have been identified */
764
765 LOG_INFO("complete time %" PRId64 ", thread mean %" PRId64 "\n",
766 (timeval_ms() - start),
767 (timeval_ms() - start) / linux_os->threadid_count);
768
769 LOG_INFO("threadid count %d", linux_os->threadid_count);
770 free(t);
771
772 return ERROR_OK;
773 }
774
775 static int clean_threadlist(struct target *target)
776 {
777 struct linux_os *linux_os = (struct linux_os *)
778 target->rtos->rtos_specific_params;
779 struct threads *old, *temp = linux_os->thread_list;
780
781 while (temp != NULL) {
782 old = temp;
783
784 if (temp->context)
785 free(temp->context);
786
787 temp = temp->next;
788 free(old);
789 }
790
791 return ERROR_OK;
792 }
793
794 static int linux_os_clean(struct target *target)
795 {
796 struct linux_os *os_linux = (struct linux_os *)
797 target->rtos->rtos_specific_params;
798 clean_threadlist(target);
799 os_linux->init_task_addr = 0xdeadbeef;
800 os_linux->name = "linux";
801 os_linux->thread_list = NULL;
802 os_linux->thread_count = 0;
803 os_linux->nr_cpus = 0;
804 os_linux->threads_lookup = 0;
805 os_linux->threads_needs_update = 0;
806 os_linux->threadid_count = 1;
807 return ERROR_OK;
808 }
809
810 static int insert_into_threadlist(struct target *target, struct threads *t)
811 {
812 struct linux_os *linux_os = (struct linux_os *)
813 target->rtos->rtos_specific_params;
814 struct threads *temp = linux_os->thread_list;
815 t->threadid = linux_os->threadid_count;
816 linux_os->threadid_count++;
817 t->status = 1;
818 t->next = NULL;
819
820 if (temp == NULL)
821 linux_os->thread_list = t;
822 else {
823 while (temp->next != NULL)
824 temp = temp->next;
825
826 t->next = NULL;
827 temp->next = t;
828 }
829
830 return ERROR_OK;
831 }
832
833 static void linux_identify_current_threads(struct target *target)
834 {
835 struct linux_os *linux_os = (struct linux_os *)
836 target->rtos->rtos_specific_params;
837 struct threads *thread_list = linux_os->thread_list;
838 struct current_thread *ct = linux_os->current_threads;
839 struct threads *t = NULL;
840
841 while ((ct != NULL)) {
842 if (ct->threadid == -1) {
843
844 /* un-identified thread */
845 int found = 0;
846 t = calloc(1, sizeof(struct threads));
847 t->base_addr = ct->TS;
848 #ifdef PID_CHECK
849
850 if (fill_task_pid(target, t) != ERROR_OK) {
851 error_handling:
852 free(t);
853 LOG_ERROR
854 ("linux identify_current_threads: unable to read pid");
855 return;
856 }
857 #endif
858
859 /* search in the list of threads if pid
860 already present */
861 while ((thread_list != NULL) && (found == 0)) {
862 #ifdef PID_CHECK
863 if (thread_list->pid == t->pid) {
864 #else
865 if (thread_list->base_addr == t->base_addr) {
866 #endif
867 free(t);
868 t = thread_list;
869 found = 1;
870 }
871 thread_list = thread_list->next;
872 }
873
874 if (!found) {
875 /* it is a new thread */
876 if (fill_task(target, t) != ERROR_OK)
877 goto error_handling;
878
879 get_name(target, t);
880 insert_into_threadlist(target, t);
881 t->thread_info_addr = 0xdeadbeef;
882 }
883
884 t->status = 3;
885 ct->threadid = t->threadid;
886 #ifdef PID_CHECK
887 ct->pid = t->pid;
888 #endif
889 linux_os->thread_count++;
890 #if 0
891 if (found == 0)
892 LOG_INFO("current thread core %x identified %s",
893 ct->core_id, t->name);
894 else
895 LOG_INFO("current thread core %x, reused %s",
896 ct->core_id, t->name);
897 #endif
898 }
899 #if 0
900 else {
901 struct threads tmp;
902 tmp.base_addr = ct->TS;
903 get_name(target, &tmp);
904 LOG_INFO("current thread core %x , already identified %s !!!",
905 ct->core_id, tmp.name);
906 }
907 #endif
908 ct = ct->next;
909 }
910
911 return;
912 #ifndef PID_CHECK
913 error_handling:
914 free(t);
915 LOG_ERROR("unable to read pid");
916 return;
917
918 #endif
919 }
920
921 static int linux_task_update(struct target *target, int context)
922 {
923 struct linux_os *linux_os = (struct linux_os *)
924 target->rtos->rtos_specific_params;
925 struct threads *thread_list = linux_os->thread_list;
926 int retval;
927 int loop = 0;
928 linux_os->thread_count = 0;
929
930 /*thread_list = thread_list->next; skip init_task*/
931 while (thread_list != NULL) {
932 thread_list->status = 0; /*setting all tasks to dead state*/
933
934 if (thread_list->context) {
935 free(thread_list->context);
936 thread_list->context = NULL;
937 }
938
939 thread_list = thread_list->next;
940 }
941
942 int found = 0;
943
944 if (linux_os->init_task_addr == 0xdeadbeef) {
945 LOG_INFO("no init symbol\n");
946 return ERROR_FAIL;
947 }
948 int64_t start = timeval_ms();
949 struct threads *t = calloc(1, sizeof(struct threads));
950 uint32_t previous = 0xdeadbeef;
951 t->base_addr = linux_os->init_task_addr;
952 retval = get_current(target, 0);
953 /*check that all current threads have been identified */
954 linux_identify_current_threads(target);
955
956 while (((t->base_addr != linux_os->init_task_addr) &&
957 (t->base_addr != previous)) || (loop == 0)) {
958 /* for avoiding any permanent loop for any reason possibly due to
959 * target */
960 loop++;
961 previous = t->base_addr;
962 /* read only pid */
963 #ifdef PID_CHECK
964 retval = fill_task_pid(target, t);
965 #endif
966
967 if (retval != ERROR_OK) {
968 free(t);
969 return ERROR_FAIL;
970 }
971
972 thread_list = linux_os->thread_list;
973
974 while (thread_list != NULL) {
975 #ifdef PID_CHECK
976 if (t->pid == thread_list->pid) {
977 #else
978 if (t->base_addr == thread_list->base_addr) {
979 #endif
980 if (!thread_list->status) {
981 #ifdef PID_CHECK
982 if (t->base_addr != thread_list->base_addr)
983 LOG_INFO("thread base_addr has changed !!");
984 #endif
985 /* this is not a current thread */
986 thread_list->base_addr = t->base_addr;
987 thread_list->status = 1;
988
989 /* we don 't update this field any more */
990
991 /*thread_list->state = t->state;
992 thread_list->oncpu = t->oncpu;
993 thread_list->asid = t->asid;
994 */
995 if (context)
996 thread_list->context =
997 cpu_context_read(target,
998 thread_list->base_addr,
999 &thread_list->thread_info_addr);
1000 } else {
1001 /* it is a current thread no need to read context */
1002 }
1003
1004 linux_os->thread_count++;
1005 found = 1;
1006 break;
1007 } else {
1008 found = 0;
1009 thread_list = thread_list->next;
1010 }
1011 }
1012
1013 if (found == 0) {
1014 uint32_t base_addr;
1015 fill_task(target, t);
1016 get_name(target, t);
1017 retval = insert_into_threadlist(target, t);
1018 t->thread_info_addr = 0xdeadbeef;
1019
1020 if (context)
1021 t->context =
1022 cpu_context_read(target, t->base_addr,
1023 &t->thread_info_addr);
1024
1025 base_addr = next_task(target, t);
1026 t = calloc(1, sizeof(struct threads));
1027 t->base_addr = base_addr;
1028 linux_os->thread_count++;
1029 } else
1030 t->base_addr = next_task(target, t);
1031 }
1032
1033 LOG_INFO("update thread done %" PRId64 ", mean%" PRId64 "\n",
1034 (timeval_ms() - start), (timeval_ms() - start) / loop);
1035 free(t);
1036 linux_os->threads_needs_update = 0;
1037 return ERROR_OK;
1038 }
1039
1040 int linux_gdb_thread_packet(struct target *target,
1041 struct connection *connection, char const *packet,
1042 int packet_size)
1043 {
1044 int retval;
1045 struct linux_os *linux_os =
1046 (struct linux_os *)target->rtos->rtos_specific_params;
1047
1048 if (linux_os->init_task_addr == 0xdeadbeef) {
1049 /* it has not been initialized */
1050 LOG_INFO("received thread request without init task address");
1051 gdb_put_packet(connection, "l", 1);
1052 return ERROR_OK;
1053 }
1054
1055 retval = linux_get_tasks(target, 1);
1056
1057 if (retval != ERROR_OK)
1058 return ERROR_TARGET_FAILURE;
1059
1060 char *out_str = calloc(MAX_THREADS * 17 + 10, 1);
1061 char *tmp_str = out_str;
1062 tmp_str += sprintf(tmp_str, "m");
1063 struct threads *temp = linux_os->thread_list;
1064
1065 while (temp != NULL) {
1066 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1067 temp = temp->next;
1068 if (temp)
1069 tmp_str += sprintf(tmp_str, ",");
1070 }
1071
1072 gdb_put_packet(connection, out_str, strlen(out_str));
1073 free(out_str);
1074 return ERROR_OK;
1075 }
1076
1077 int linux_gdb_thread_update(struct target *target,
1078 struct connection *connection, char const *packet,
1079 int packet_size)
1080 {
1081 int found = 0;
1082 struct linux_os *linux_os = (struct linux_os *)
1083 target->rtos->rtos_specific_params;
1084 struct threads *temp = linux_os->thread_list;
1085
1086 while (temp != NULL) {
1087 if (temp->threadid == linux_os->preupdtate_threadid_count + 1) {
1088 /*LOG_INFO("FOUND");*/
1089 found = 1;
1090 break;
1091 } else
1092 temp = temp->next;
1093 }
1094
1095 if (found == 1) {
1096 /*LOG_INFO("INTO GDB THREAD UPDATE FOUNDING START TASK");*/
1097 char *out_strr = calloc(MAX_THREADS * 17 + 10, 1);
1098 char *tmp_strr = out_strr;
1099 tmp_strr += sprintf(tmp_strr, "m");
1100 /*LOG_INFO("CHAR MALLOC & M DONE");*/
1101 tmp_strr += sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1102
1103 temp = temp->next;
1104
1105 while (temp != NULL) {
1106 /*LOG_INFO("INTO GDB THREAD UPDATE WHILE");*/
1107 tmp_strr += sprintf(tmp_strr, ",");
1108 tmp_strr +=
1109 sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1110 temp = temp->next;
1111 }
1112
1113 /*tmp_str[0] = 0;*/
1114 gdb_put_packet(connection, out_strr, strlen(out_strr));
1115 linux_os->preupdtate_threadid_count =
1116 linux_os->threadid_count - 1;
1117 free(out_strr);
1118 } else
1119 gdb_put_packet(connection, "l", 1);
1120
1121 return ERROR_OK;
1122 }
1123
1124 int linux_thread_extra_info(struct target *target,
1125 struct connection *connection, char const *packet,
1126 int packet_size)
1127 {
1128 int64_t threadid = 0;
1129 struct linux_os *linux_os = (struct linux_os *)
1130 target->rtos->rtos_specific_params;
1131 sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
1132 /*LOG_INFO("lookup extra info for thread %" SCNx64, threadid);*/
1133 struct threads *temp = linux_os->thread_list;
1134
1135 while (temp != NULL) {
1136 if (temp->threadid == threadid) {
1137 char *pid = " PID: ";
1138 char *pid_current = "*PID: ";
1139 char *name = "Name: ";
1140 int str_size = strlen(pid) + strlen(name);
1141 char *tmp_str = calloc(1, str_size + 50);
1142 char *tmp_str_ptr = tmp_str;
1143
1144 /* discriminate current task */
1145 if (temp->status == 3)
1146 tmp_str_ptr += sprintf(tmp_str_ptr, "%s",
1147 pid_current);
1148 else
1149 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", pid);
1150
1151 tmp_str_ptr += sprintf(tmp_str_ptr, "%d, ", (int)temp->pid);
1152 sprintf(tmp_str_ptr, "%s", name);
1153 sprintf(tmp_str_ptr, "%s", temp->name);
1154 char *hex_str = calloc(1, strlen(tmp_str) * 2 + 1);
1155 size_t pkt_len = hexify(hex_str, (const uint8_t *)tmp_str,
1156 strlen(tmp_str), strlen(tmp_str) * 2 + 1);
1157 gdb_put_packet(connection, hex_str, pkt_len);
1158 free(hex_str);
1159 free(tmp_str);
1160 return ERROR_OK;
1161 }
1162
1163 temp = temp->next;
1164 }
1165
1166 LOG_INFO("thread not found");
1167 return ERROR_OK;
1168 }
1169
1170 int linux_gdb_T_packet(struct connection *connection,
1171 struct target *target, char const *packet, int packet_size)
1172 {
1173 int64_t threadid;
1174 struct linux_os *linux_os = (struct linux_os *)
1175 target->rtos->rtos_specific_params;
1176 int retval = ERROR_OK;
1177 sscanf(packet, "T%" SCNx64, &threadid);
1178
1179 if (linux_os->threads_needs_update == 0) {
1180 struct threads *temp = linux_os->thread_list;
1181 struct threads *prev = NULL;
1182
1183 while (temp != NULL) {
1184 if (temp->threadid == threadid) {
1185 if (temp->status != 0) {
1186 gdb_put_packet(connection, "OK", 2);
1187 return ERROR_OK;
1188 } else {
1189 /* delete item in the list */
1190 linux_os->thread_list =
1191 liste_del_task(linux_os->thread_list,
1192 &temp, prev);
1193 linux_os->thread_count--;
1194 gdb_put_packet(connection, "E01", 3);
1195 return ERROR_OK;
1196 }
1197 }
1198
1199 /* for deletion */
1200 prev = temp;
1201 temp = temp->next;
1202 }
1203
1204 LOG_INFO("gdb requested status on non existing thread");
1205 gdb_put_packet(connection, "E01", 3);
1206 return ERROR_OK;
1207
1208 } else {
1209 retval = linux_task_update(target, 1);
1210 struct threads *temp = linux_os->thread_list;
1211
1212 while (temp != NULL) {
1213 if (temp->threadid == threadid) {
1214 if (temp->status == 1) {
1215 gdb_put_packet(connection, "OK", 2);
1216 return ERROR_OK;
1217 } else {
1218 gdb_put_packet(connection, "E01", 3);
1219 return ERROR_OK;
1220 }
1221 }
1222
1223 temp = temp->next;
1224 }
1225 }
1226
1227 return retval;
1228 }
1229
1230 int linux_gdb_h_packet(struct connection *connection,
1231 struct target *target, char const *packet, int packet_size)
1232 {
1233 struct linux_os *linux_os = (struct linux_os *)
1234 target->rtos->rtos_specific_params;
1235 struct current_thread *ct = linux_os->current_threads;
1236
1237 /* select to display the current thread of the selected target */
1238 while ((ct != NULL) && (ct->core_id != target->coreid))
1239 ct = ct->next;
1240
1241 int64_t current_gdb_thread_rq;
1242
1243 if (linux_os->threads_lookup == 1) {
1244 if ((ct != NULL) && (ct->threadid == -1)) {
1245 ct = linux_os->current_threads;
1246
1247 while ((ct != NULL) && (ct->threadid == -1))
1248 ct = ct->next;
1249 }
1250
1251 if (ct == NULL) {
1252 /* no current thread can be identified
1253 * any way with smp */
1254 LOG_INFO("no current thread identified");
1255 /* attempt to display the name of the 2 threads identified with
1256 * get_current */
1257 struct threads t;
1258 ct = linux_os->current_threads;
1259
1260 while ((ct != NULL) && (ct->threadid == -1)) {
1261 t.base_addr = ct->TS;
1262 get_name(target, &t);
1263 LOG_INFO("name of unidentified thread %s",
1264 t.name);
1265 ct = ct->next;
1266 }
1267
1268 gdb_put_packet(connection, "OK", 2);
1269 return ERROR_OK;
1270 }
1271
1272 if (packet[1] == 'g') {
1273 sscanf(packet, "Hg%16" SCNx64, &current_gdb_thread_rq);
1274
1275 if (current_gdb_thread_rq == 0) {
1276 target->rtos->current_threadid = ct->threadid;
1277 gdb_put_packet(connection, "OK", 2);
1278 } else {
1279 target->rtos->current_threadid =
1280 current_gdb_thread_rq;
1281 gdb_put_packet(connection, "OK", 2);
1282 }
1283 } else if (packet[1] == 'c') {
1284 sscanf(packet, "Hc%16" SCNx64, &current_gdb_thread_rq);
1285
1286 if ((current_gdb_thread_rq == 0) ||
1287 (current_gdb_thread_rq == ct->threadid)) {
1288 target->rtos->current_threadid = ct->threadid;
1289 gdb_put_packet(connection, "OK", 2);
1290 } else
1291 gdb_put_packet(connection, "E01", 3);
1292 }
1293 } else
1294 gdb_put_packet(connection, "OK", 2);
1295
1296 return ERROR_OK;
1297 }
1298
1299 static int linux_thread_packet(struct connection *connection, char const *packet,
1300 int packet_size)
1301 {
1302 int retval = ERROR_OK;
1303 struct current_thread *ct;
1304 struct target *target = get_target_from_connection(connection);
1305 struct linux_os *linux_os = (struct linux_os *)
1306 target->rtos->rtos_specific_params;
1307
1308 switch (packet[0]) {
1309 case 'T': /* Is thread alive?*/
1310
1311 linux_gdb_T_packet(connection, target, packet, packet_size);
1312 break;
1313 case 'H': /* Set current thread */
1314 /* ( 'c' for step and continue, 'g' for all other operations )*/
1315 /*LOG_INFO(" H packet received '%s'", packet);*/
1316 linux_gdb_h_packet(connection, target, packet, packet_size);
1317 break;
1318 case 'q':
1319
1320 if (strncmp(packet, "qSymbol", 7) == 0) {
1321 if (rtos_qsymbol(connection, packet, packet_size) == 1) {
1322 linux_compute_virt2phys(target,
1323 target->rtos->symbols[INIT_TASK].address);
1324 }
1325
1326 break;
1327 } else if (strncmp(packet, "qfThreadInfo", 12) == 0) {
1328 if (linux_os->thread_list == NULL) {
1329 retval = linux_gdb_thread_packet(target,
1330 connection,
1331 packet,
1332 packet_size);
1333 break;
1334 } else {
1335 retval = linux_gdb_thread_update(target,
1336 connection,
1337 packet,
1338 packet_size);
1339 break;
1340 }
1341 } else if (strncmp(packet, "qsThreadInfo", 12) == 0) {
1342 gdb_put_packet(connection, "l", 1);
1343 break;
1344 } else if (strncmp(packet, "qThreadExtraInfo,", 17) == 0) {
1345 linux_thread_extra_info(target, connection, packet,
1346 packet_size);
1347 break;
1348 } else {
1349 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1350 break;
1351 }
1352
1353 case 'Q':
1354 /* previously response was : thread not found
1355 * gdb_put_packet(connection, "E01", 3); */
1356 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1357 break;
1358 case 'c':
1359 case 's': {
1360 if (linux_os->threads_lookup == 1) {
1361 ct = linux_os->current_threads;
1362
1363 while ((ct != NULL) && (ct->core_id) != target->coreid)
1364 ct = ct->next;
1365
1366 if ((ct != NULL) && (ct->threadid == -1)) {
1367 ct = linux_os->current_threads;
1368
1369 while ((ct != NULL) && (ct->threadid == -1))
1370 ct = ct->next;
1371 }
1372
1373 if ((ct != NULL) && (ct->threadid !=
1374 target->rtos->current_threadid)
1375 && (target->rtos->current_threadid != -1))
1376 LOG_WARNING("WARNING! current GDB thread do not match "
1377 "current thread running. "
1378 "Switch thread in GDB to threadid %d",
1379 (int)ct->threadid);
1380
1381 LOG_INFO("threads_needs_update = 1");
1382 linux_os->threads_needs_update = 1;
1383 }
1384 }
1385
1386 /* if a packet handler returned an error, exit input loop */
1387 if (retval != ERROR_OK)
1388 return retval;
1389 }
1390
1391 return retval;
1392 }
1393
1394 static int linux_os_smp_init(struct target *target)
1395 {
1396 struct target_list *head;
1397 /* keep only target->rtos */
1398 struct rtos *rtos = target->rtos;
1399 struct linux_os *os_linux =
1400 (struct linux_os *)rtos->rtos_specific_params;
1401 struct current_thread *ct;
1402 head = target->head;
1403
1404 while (head != (struct target_list *)NULL) {
1405 if (head->target->rtos != rtos) {
1406 struct linux_os *smp_os_linux =
1407 (struct linux_os *)head->target->rtos->rtos_specific_params;
1408 /* remap smp target on rtos */
1409 free(head->target->rtos);
1410 head->target->rtos = rtos;
1411 /* reuse allocated ct */
1412 ct = smp_os_linux->current_threads;
1413 ct->threadid = -1;
1414 ct->TS = 0xdeadbeef;
1415 ct->core_id = head->target->coreid;
1416 os_linux->current_threads =
1417 add_current_thread(os_linux->current_threads, ct);
1418 os_linux->nr_cpus++;
1419 free(smp_os_linux);
1420 }
1421
1422 head = head->next;
1423 }
1424
1425 return ERROR_OK;
1426 }
1427
1428 static int linux_os_create(struct target *target)
1429 {
1430 struct linux_os *os_linux = calloc(1, sizeof(struct linux_os));
1431 struct current_thread *ct = calloc(1, sizeof(struct current_thread));
1432 LOG_INFO("linux os creation\n");
1433 os_linux->init_task_addr = 0xdeadbeef;
1434 os_linux->name = "linux";
1435 os_linux->thread_list = NULL;
1436 os_linux->thread_count = 0;
1437 target->rtos->current_threadid = -1;
1438 os_linux->nr_cpus = 1;
1439 os_linux->threads_lookup = 0;
1440 os_linux->threads_needs_update = 0;
1441 os_linux->threadid_count = 1;
1442 os_linux->current_threads = NULL;
1443 target->rtos->rtos_specific_params = os_linux;
1444 ct->core_id = target->coreid;
1445 ct->threadid = -1;
1446 ct->TS = 0xdeadbeef;
1447 os_linux->current_threads =
1448 add_current_thread(os_linux->current_threads, ct);
1449 /* overload rtos thread default handler */
1450 target->rtos->gdb_thread_packet = linux_thread_packet;
1451 /* initialize a default virt 2 phys translation */
1452 os_linux->phys_mask = ~0xc0000000;
1453 os_linux->phys_base = 0x0;
1454 return JIM_OK;
1455 }
1456
1457 static char *linux_ps_command(struct target *target)
1458 {
1459 struct linux_os *linux_os = (struct linux_os *)
1460 target->rtos->rtos_specific_params;
1461 int retval = ERROR_OK;
1462 char *display;
1463
1464 if (linux_os->threads_lookup == 0)
1465 retval = linux_get_tasks(target, 1);
1466 else {
1467 if (linux_os->threads_needs_update != 0)
1468 retval = linux_task_update(target, 0);
1469 }
1470
1471 if (retval == ERROR_OK) {
1472 struct threads *temp = linux_os->thread_list;
1473 char *tmp;
1474 LOG_INFO("allocation for %d threads line",
1475 linux_os->thread_count);
1476 display = calloc((linux_os->thread_count + 2) * 80, 1);
1477
1478 if (!display)
1479 goto error;
1480
1481 tmp = display;
1482 tmp += sprintf(tmp, "PID\t\tCPU\t\tASID\t\tNAME\n");
1483 tmp += sprintf(tmp, "---\t\t---\t\t----\t\t----\n");
1484
1485 while (temp != NULL) {
1486 if (temp->status) {
1487 if (temp->context)
1488 tmp +=
1489 sprintf(tmp,
1490 "%" PRId32 "\t\t%" PRId32 "\t\t%" PRIx32 "\t\t%s\n",
1491 temp->pid, temp->oncpu,
1492 temp->asid, temp->name);
1493 else
1494 tmp +=
1495 sprintf(tmp,
1496 "%" PRId32 "\t\t%" PRId32 "\t\t%" PRIx32 "\t\t%s\n",
1497 temp->pid, temp->oncpu,
1498 temp->asid, temp->name);
1499 }
1500
1501 temp = temp->next;
1502 }
1503
1504 return display;
1505 }
1506
1507 error:
1508 display = calloc(40, 1);
1509 sprintf(display, "linux_ps_command failed\n");
1510 return display;
1511 }
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