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 *
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. *
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. *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
20 ***************************************************************************/
26 #include <helper/time_support.h>
27 #include <jtag/jtag.h>
28 #include "target/target.h"
29 #include "target/target_type.h"
30 #include "helper/log.h"
32 #include "helper/log.h"
33 #include "rtos_standard_stackings.h"
34 #include <target/register.h>
35 #include "server/gdb_server.h"
37 #define LINUX_USER_KERNEL_BORDER 0xc0000000
38 #include "linux_header.h"
40 #define MAX_THREADS 200
44 uint32_t init_task_addr;
47 int preupdtate_threadid_count;
50 int threads_needs_update;
51 struct current_thread *current_threads;
52 struct threads *thread_list;
53 /* virt2phys parameter */
58 struct current_thread {
65 struct current_thread *next;
70 uint32_t base_addr; /* address to read magic */
71 uint32_t state; /* magic value : filled only at creation */
72 uint32_t pid; /* linux pid : id for identifying a thread */
73 uint32_t oncpu; /* content cpu number in current thread */
74 uint32_t asid; /* filled only at creation */
76 int status; /* dead = 1 alive = 2 current = 3 alive and current */
77 /* value that should not change during the live of a thread ? */
78 uint32_t thread_info_addr; /* contain latest thread_info_addr computed */
79 /* retrieve from thread_info */
80 struct cpu_context *context;
95 uint32_t preempt_count;
97 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
99 static int insert_into_threadlist(struct target *target, struct threads *t);
101 static int linux_os_create(struct target *target);
103 static int linux_os_dummy_update(struct rtos *rtos)
105 /* update is done only when thread request come
106 * too many thread to do it on each stop */
110 static int linux_compute_virt2phys(struct target *target, uint32_t address)
112 struct linux_os *linux_os = (struct linux_os *)
113 target->rtos->rtos_specific_params;
115 int retval = target->type->virt2phys(target, address, &pa);
116 if (retval != ERROR_OK) {
117 LOG_ERROR("Cannot compute linux virt2phys translation");
118 /* fixes default address */
119 linux_os->phys_base = 0;
123 linux_os->init_task_addr = address;
124 address = address & linux_os->phys_mask;
125 linux_os->phys_base = pa - address;
129 static int linux_read_memory(struct target *target,
130 uint32_t address, uint32_t size, uint32_t count,
134 struct linux_os *linux_os = (struct linux_os *)
135 target->rtos->rtos_specific_params;
136 uint32_t pa = (address & linux_os->phys_mask) + linux_os->phys_base;
138 if (address < 0xc000000) {
139 LOG_ERROR("linux awareness : address in user space");
143 target->type->read_phys_memory(target, pa, size, count, buffer);
145 target->type->read_memory(target, address, size, count, buffer);
149 static char *reg_converter(char *buffer, void *reg, int size)
153 for (i = 0; i < size; i++)
154 buffer += sprintf(buffer, "%02x", ((uint8_t *) reg)[i]);
159 int fill_buffer(struct target *target, uint32_t addr, uint8_t *buffer)
162 if ((addr & 0xfffffffc) != addr)
163 LOG_INFO("unaligned address %x!!", addr);
165 int retval = linux_read_memory(target, addr, 4, 1, buffer);
170 uint32_t get_buffer(struct target *target, const uint8_t *buffer)
173 const uint8_t *value_ptr = buffer;
174 value = target_buffer_get_u32(target, value_ptr);
178 static int linux_os_thread_reg_list(struct rtos *rtos,
179 int64_t thread_id, char **hex_reg_list)
181 struct target *target = rtos->target;
182 struct linux_os *linux_os = (struct linux_os *)
183 target->rtos->rtos_specific_params;
185 struct current_thread *tmp = linux_os->current_threads;
186 struct current_thread *next;
190 /* check if a current thread is requested */
194 if (next->threadid == thread_id)
198 } while ((found == 0) && (next != tmp) && (next != NULL));
201 /* search target to perfom the access */
202 struct reg **reg_list;
203 int reg_list_size, reg_packet_size = 0;
204 struct target_list *head;
208 if (head->target->coreid == next->core_id) {
210 target = head->target;
215 } while ((head != (struct target_list *)NULL) && (found == 0));
220 "current thread %" PRIx64 ": no target to perform access of core id %x",
226 /*LOG_INFO("thread %lx current on core %x",thread_id,
229 target_get_gdb_reg_list(target, ®_list, ®_list_size);
231 if (retval != ERROR_OK)
234 for (i = 0; i < reg_list_size; i++)
235 reg_packet_size += reg_list[i]->size;
237 *hex_reg_list = malloc(DIV_ROUND_UP(reg_packet_size, 8) * 2);
239 hex_string = *hex_reg_list;
241 for (i = 0; i < reg_list_size; i++) {
242 if (!reg_list[i]->valid)
243 reg_list[i]->type->get(reg_list[i]);
245 hex_string = reg_converter(hex_string,
247 (reg_list[i]->size) / 8);
253 struct threads *temp = linux_os->thread_list;
254 *hex_reg_list = (char *)calloc(1, 500 * sizeof(char));
255 hex_string = *hex_reg_list;
257 for (i = 0; i < 16; i++)
258 hex_string += sprintf(hex_string, "%02x", 0);
260 while ((temp != NULL) &&
261 (temp->threadid != target->rtos->current_threadid))
265 if (temp->context == NULL)
266 temp->context = cpu_context_read(target,
273 reg_converter(hex_string, &temp->context->R4, 4);
275 reg_converter(hex_string, &temp->context->R5, 4);
277 reg_converter(hex_string, &temp->context->R6, 4);
279 reg_converter(hex_string, &temp->context->R7, 4);
281 reg_converter(hex_string, &temp->context->R8, 4);
283 reg_converter(hex_string, &temp->context->R9, 4);
285 for (i = 0; i < 4; i++) /*R10 = 0x0 */
286 hex_string += sprintf(hex_string, "%02x", 0);
289 reg_converter(hex_string, &temp->context->FP, 4);
291 reg_converter(hex_string, &temp->context->IP, 4);
293 reg_converter(hex_string, &temp->context->SP, 4);
295 for (i = 0; i < 4; i++)
296 hex_string += sprintf(hex_string, "%02x", 0);
299 reg_converter(hex_string, &temp->context->PC, 4);
301 for (i = 0; i < 100; i++) /*100 */
302 hex_string += sprintf(hex_string, "%02x", 0);
304 uint32_t cpsr = 0x00000000;
305 reg_converter(hex_string, &cpsr, 4);
311 static int linux_os_detect(struct target *target)
313 LOG_INFO("should no be called");
317 static int linux_os_smp_init(struct target *target);
318 static int linux_os_clean(struct target *target);
320 static char *linux_symbol_list[] = {
325 static int linux_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[])
328 *symbol_list = (symbol_table_elem_t *)
329 malloc(sizeof(symbol_table_elem_t) / sizeof(char *));
331 for (i = 0; i < sizeof(linux_symbol_list) / sizeof(char *); i++)
332 (*symbol_list)[i].symbol_name = linux_symbol_list[i];
337 static char *linux_ps_command(struct target *target);
339 const struct rtos_type Linux_os = {
341 .detect_rtos = linux_os_detect,
342 .create = linux_os_create,
343 .smp_init = linux_os_smp_init,
344 .update_threads = linux_os_dummy_update,
345 .get_thread_reg_list = linux_os_thread_reg_list,
346 .get_symbol_list_to_lookup = linux_get_symbol_list_to_lookup,
347 .clean = linux_os_clean,
348 .ps_command = linux_ps_command,
351 static int linux_thread_packet(struct connection *connection, char *packet,
353 static void linux_identify_current_threads(struct target *target);
356 int fill_task_pid(struct target *target, struct threads *t)
358 uint32_t pid_addr = t->base_addr + PID;
360 int retval = fill_buffer(target, pid_addr, buffer);
362 if (retval == ERROR_OK) {
363 uint32_t val = get_buffer(target, buffer);
366 LOG_ERROR("fill_task_pid: unable to read memory");
372 int fill_task(struct target *target, struct threads *t)
375 uint32_t pid_addr = t->base_addr + PID;
376 uint32_t mem_addr = t->base_addr + MEM;
377 uint32_t on_cpu = t->base_addr + ONCPU;
378 uint8_t *buffer = calloc(1, 4);
379 retval = fill_buffer(target, t->base_addr, buffer);
381 if (retval == ERROR_OK) {
382 uint32_t val = get_buffer(target, buffer);
385 LOG_ERROR("fill_task: unable to read memory");
387 retval = fill_buffer(target, pid_addr, buffer);
389 if (retval == ERROR_OK) {
390 uint32_t val = get_buffer(target, buffer);
393 LOG_ERROR("fill task: unable to read memory");
395 retval = fill_buffer(target, on_cpu, buffer);
397 if (retval == ERROR_OK) {
398 uint32_t val = get_buffer(target, buffer);
401 LOG_ERROR("fill task: unable to read memory");
403 retval = fill_buffer(target, mem_addr, buffer);
405 if (retval == ERROR_OK) {
406 uint32_t val = get_buffer(target, buffer);
409 uint32_t asid_addr = val + MM_CTX;
410 retval = fill_buffer(target, asid_addr, buffer);
412 if (retval == ERROR_OK) {
413 val = get_buffer(target, buffer);
417 ("fill task: unable to read memory -- ASID");
421 LOG_ERROR("fill task: unable to read memory");
426 int get_name(struct target *target, struct threads *t)
429 uint32_t full_name[4];
430 uint32_t comm = t->base_addr + COMM;
433 for (i = 0; i < 17; i++)
436 retval = linux_read_memory(target, comm, 4, 4, (uint8_t *) full_name);
438 if (retval != ERROR_OK) {
439 LOG_ERROR("get_name: unable to read memory\n");
443 uint32_t raw_name = target_buffer_get_u32(target,
446 t->name[3] = raw_name >> 24;
447 t->name[2] = raw_name >> 16;
448 t->name[1] = raw_name >> 8;
449 t->name[0] = raw_name;
451 target_buffer_get_u32(target, (const uint8_t *)&full_name[1]);
452 t->name[7] = raw_name >> 24;
453 t->name[6] = raw_name >> 16;
454 t->name[5] = raw_name >> 8;
455 t->name[4] = raw_name;
457 target_buffer_get_u32(target, (const uint8_t *)&full_name[2]);
458 t->name[11] = raw_name >> 24;
459 t->name[10] = raw_name >> 16;
460 t->name[9] = raw_name >> 8;
461 t->name[8] = raw_name;
463 target_buffer_get_u32(target, (const uint8_t *)&full_name[3]);
464 t->name[15] = raw_name >> 24;
465 t->name[14] = raw_name >> 16;
466 t->name[13] = raw_name >> 8;
467 t->name[12] = raw_name;
472 int get_current(struct target *target, int create)
474 struct target_list *head;
479 uint8_t *buffer = calloc(1, 4);
480 struct linux_os *linux_os = (struct linux_os *)
481 target->rtos->rtos_specific_params;
482 struct current_thread *ctt = linux_os->current_threads;
484 /* invalid current threads content */
485 while (ctt != NULL) {
487 ctt->TS = 0xdeadbeef;
491 while (head != (struct target_list *)NULL) {
492 struct reg **reg_list;
496 if (target_get_gdb_reg_list(head->target, ®_list,
497 ®_list_size) != ERROR_OK)
498 return ERROR_TARGET_FAILURE;
500 if (!reg_list[13]->valid)
501 reg_list[13]->type->get(reg_list[13]);
503 buf = reg_list[13]->value;
504 val = get_buffer(target, buf);
505 ti_addr = (val & 0xffffe000);
506 uint32_t TS_addr = ti_addr + 0xc;
507 retval = fill_buffer(target, TS_addr, buffer);
509 if (retval == ERROR_OK) {
510 uint32_t TS = get_buffer(target, buffer);
511 uint32_t cpu, on_cpu = TS + ONCPU;
512 retval = fill_buffer(target, on_cpu, buffer);
514 if (retval == ERROR_OK) {
515 /*uint32_t cpu = get_buffer(target, buffer);*/
516 struct current_thread *ct =
517 linux_os->current_threads;
518 cpu = head->target->coreid;
520 while ((ct != NULL) && (ct->core_id != (int32_t) cpu))
523 if ((ct != NULL) && (ct->TS == 0xdeadbeef))
527 ("error in linux current thread update");
531 t = calloc(1, sizeof(struct threads));
532 t->base_addr = ct->TS;
533 fill_task(target, t);
536 insert_into_threadlist(target, t);
538 t->thread_info_addr = 0xdeadbeef;
539 ct->threadid = t->threadid;
540 linux_os->thread_count++;
544 /*LOG_INFO("Creation of current thread %s",t->name);*/
556 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
557 uint32_t *thread_info_addr_old)
559 struct cpu_context *context = calloc(1, sizeof(struct cpu_context));
560 uint32_t preempt_count_addr = 0;
561 uint32_t registers[10];
562 uint8_t *buffer = calloc(1, 4);
563 uint32_t stack = base_addr + QAT;
564 uint32_t thread_info_addr = 0;
565 uint32_t thread_info_addr_update = 0;
566 int retval = ERROR_FAIL;
567 context->R4 = 0xdeadbeef;
568 context->R5 = 0xdeadbeef;
569 context->R6 = 0xdeadbeef;
570 context->R7 = 0xdeadbeef;
571 context->R8 = 0xdeadbeef;
572 context->R9 = 0xdeadbeef;
573 context->IP = 0xdeadbeef;
574 context->FP = 0xdeadbeef;
575 context->SP = 0xdeadbeef;
576 context->PC = 0xdeadbeef;
579 if (*thread_info_addr_old == 0xdeadbeef) {
580 retval = fill_buffer(target, stack, buffer);
582 if (retval == ERROR_OK)
583 thread_info_addr = get_buffer(target, buffer);
585 LOG_ERROR("cpu_context: unable to read memory");
587 thread_info_addr_update = thread_info_addr;
589 thread_info_addr = *thread_info_addr_old;
591 preempt_count_addr = thread_info_addr + PREEMPT;
592 retval = fill_buffer(target, preempt_count_addr, buffer);
594 if (retval == ERROR_OK)
595 context->preempt_count = get_buffer(target, buffer);
597 if (*thread_info_addr_old != 0xdeadbeef) {
599 ("cpu_context: cannot read at thread_info_addr");
601 if (*thread_info_addr_old < LINUX_USER_KERNEL_BORDER)
603 ("cpu_context : thread_info_addr in userspace!!!");
605 *thread_info_addr_old = 0xdeadbeef;
609 LOG_ERROR("cpu_context: unable to read memory");
612 thread_info_addr += CPU_CONT;
614 retval = linux_read_memory(target, thread_info_addr, 4, 10,
615 (uint8_t *) registers);
617 if (retval != ERROR_OK) {
618 LOG_ERROR("cpu_context: unable to read memory\n");
623 target_buffer_get_u32(target, (const uint8_t *)®isters[0]);
625 target_buffer_get_u32(target, (const uint8_t *)®isters[1]);
627 target_buffer_get_u32(target, (const uint8_t *)®isters[2]);
629 target_buffer_get_u32(target, (const uint8_t *)®isters[3]);
631 target_buffer_get_u32(target, (const uint8_t *)®isters[4]);
633 target_buffer_get_u32(target, (const uint8_t *)®isters[5]);
635 target_buffer_get_u32(target, (const uint8_t *)®isters[6]);
637 target_buffer_get_u32(target, (const uint8_t *)®isters[7]);
639 target_buffer_get_u32(target, (const uint8_t *)®isters[8]);
641 target_buffer_get_u32(target, (const uint8_t *)®isters[9]);
643 if (*thread_info_addr_old == 0xdeadbeef)
644 *thread_info_addr_old = thread_info_addr_update;
649 uint32_t next_task(struct target *target, struct threads *t)
651 uint8_t *buffer = calloc(1, 4);
652 uint32_t next_addr = t->base_addr + NEXT;
653 int retval = fill_buffer(target, next_addr, buffer);
655 if (retval == ERROR_OK) {
656 uint32_t val = get_buffer(target, buffer);
661 LOG_ERROR("next task: unable to read memory");
666 struct current_thread *add_current_thread(struct current_thread *currents,
667 struct current_thread *ct)
671 if (currents == NULL) {
675 struct current_thread *temp = currents;
677 while (temp->next != NULL)
685 struct threads *liste_del_task(struct threads *task_list, struct threads **t,
686 struct threads *prev)
688 LOG_INFO("del task %" PRId64, (*t)->threadid);
689 prev->next = (*t)->next;
691 if (prev == task_list)
694 /* free content of threads */
703 struct threads *liste_add_task(struct threads *task_list, struct threads *t,
704 struct threads **last)
709 if (task_list == NULL) {
713 struct threads *temp = task_list;
715 while (temp->next != NULL)
729 static int current_pid(struct linux_os *linux_os, uint32_t pid)
731 static int current_base_addr(struct linux_os *linux_os, uint32_t base_addr)
734 struct current_thread *ct = linux_os->current_threads;
737 while ((ct != NULL) && (ct->pid != pid))
739 while ((ct != NULL) && (ct->TS != base_addr))
743 if ((ct != NULL) && (ct->pid == pid))
745 if ((ct != NULL) && (ct->TS == base_addr))
752 int linux_get_tasks(struct target *target, int context)
756 struct linux_os *linux_os = (struct linux_os *)
757 target->rtos->rtos_specific_params;
758 linux_os->thread_list = NULL;
759 linux_os->thread_count = 0;
761 if (linux_os->init_task_addr == 0xdeadbeef) {
762 LOG_INFO("no init symbol\n");
766 int64_t start = timeval_ms();
768 struct threads *t = calloc(1, sizeof(struct threads));
769 struct threads *last = NULL;
770 t->base_addr = linux_os->init_task_addr;
771 /* retrieve the thread id , currently running in the different smp core */
772 get_current(target, 1);
774 while (((t->base_addr != linux_os->init_task_addr) &&
775 (t->base_addr != 0)) || (loop == 0)) {
777 fill_task(target, t);
778 retval = get_name(target, t);
780 if (loop > MAX_THREADS) {
781 LOG_INFO("more than %d threads !!", MAX_THREADS);
785 if (retval != ERROR_OK) {
790 /* check that this thread is not one the current threads already
794 if (!current_pid(linux_os, t->pid)) {
796 if (!current_base_addr(linux_os, t->base_addr)) {
798 t->threadid = linux_os->threadid_count;
800 linux_os->threadid_count++;
802 linux_os->thread_list =
803 liste_add_task(linux_os->thread_list, t, &last);
804 /* no interest to fill the context if it is a current thread. */
805 linux_os->thread_count++;
806 t->thread_info_addr = 0xdeadbeef;
810 cpu_context_read(target, t->base_addr,
811 &t->thread_info_addr);
813 /*LOG_INFO("thread %s is a current thread already created",t->name); */
817 uint32_t base_addr = next_task(target, t);
818 t = calloc(1, sizeof(struct threads));
819 t->base_addr = base_addr;
822 linux_os->threads_lookup = 1;
823 linux_os->threads_needs_update = 0;
824 linux_os->preupdtate_threadid_count = linux_os->threadid_count - 1;
825 /* check that all current threads have been identified */
827 LOG_INFO("complete time %" PRId64 ", thread mean %" PRId64 "\n",
828 (timeval_ms() - start),
829 (timeval_ms() - start) / linux_os->threadid_count);
831 LOG_INFO("threadid count %d", linux_os->threadid_count);
836 static int clean_threadlist(struct target *target)
838 struct linux_os *linux_os = (struct linux_os *)
839 target->rtos->rtos_specific_params;
840 struct threads *old, *temp = linux_os->thread_list;
842 while (temp != NULL) {
855 static int linux_os_clean(struct target *target)
857 struct linux_os *os_linux = (struct linux_os *)
858 target->rtos->rtos_specific_params;
859 clean_threadlist(target);
860 os_linux->init_task_addr = 0xdeadbeef;
861 os_linux->name = "linux";
862 os_linux->thread_list = NULL;
863 os_linux->thread_count = 0;
864 os_linux->nr_cpus = 0;
865 os_linux->threads_lookup = 0;
866 os_linux->threads_needs_update = 0;
867 os_linux->threadid_count = 1;
871 static int insert_into_threadlist(struct target *target, struct threads *t)
873 struct linux_os *linux_os = (struct linux_os *)
874 target->rtos->rtos_specific_params;
875 struct threads *temp = linux_os->thread_list;
876 t->threadid = linux_os->threadid_count;
877 linux_os->threadid_count++;
882 linux_os->thread_list = t;
884 while (temp->next != NULL)
894 static void linux_identify_current_threads(struct target *target)
896 struct linux_os *linux_os = (struct linux_os *)
897 target->rtos->rtos_specific_params;
898 struct threads *thread_list = linux_os->thread_list;
899 struct current_thread *ct = linux_os->current_threads;
900 struct threads *t = NULL;
902 while ((ct != NULL)) {
903 if (ct->threadid == -1) {
905 /* un-identified thread */
907 t = calloc(1, sizeof(struct threads));
908 t->base_addr = ct->TS;
911 if (fill_task_pid(target, t) != ERROR_OK) {
915 ("linux identify_current_threads: unable to read pid");
920 /* search in the list of threads if pid
922 while ((thread_list != NULL) && (found == 0)) {
924 if (thread_list->pid == t->pid) {
926 if (thread_list->base_addr == t->base_addr) {
932 thread_list = thread_list->next;
936 /* it is a new thread */
937 if (fill_task(target, t) != ERROR_OK)
941 insert_into_threadlist(target, t);
942 t->thread_info_addr = 0xdeadbeef;
946 ct->threadid = t->threadid;
950 linux_os->thread_count++;
953 LOG_INFO("current thread core %x identified %s",
954 ct->core_id, t->name);
956 LOG_INFO("current thread core %x, reused %s",
957 ct->core_id, t->name);
963 tmp.base_addr = ct->TS;
964 get_name(target, &tmp);
965 LOG_INFO("current thread core %x , already identified %s !!!",
966 ct->core_id, tmp.name);
976 LOG_ERROR("unable toread pid");
982 static int linux_task_update(struct target *target, int context)
984 struct linux_os *linux_os = (struct linux_os *)
985 target->rtos->rtos_specific_params;
986 struct threads *thread_list = linux_os->thread_list;
989 linux_os->thread_count = 0;
991 /*thread_list = thread_list->next; skip init_task*/
992 while (thread_list != NULL) {
993 thread_list->status = 0; /*setting all tasks to dead state*/
995 if (thread_list->context) {
996 free(thread_list->context);
997 thread_list->context = NULL;
1000 thread_list = thread_list->next;
1005 if (linux_os->init_task_addr == 0xdeadbeef) {
1006 LOG_INFO("no init symbol\n");
1009 int64_t start = timeval_ms();
1010 struct threads *t = calloc(1, sizeof(struct threads));
1011 uint32_t previous = 0xdeadbeef;
1012 t->base_addr = linux_os->init_task_addr;
1013 retval = get_current(target, 0);
1014 /*check that all current threads have been identified */
1015 linux_identify_current_threads(target);
1017 while (((t->base_addr != linux_os->init_task_addr) &&
1018 (t->base_addr != previous)) || (loop == 0)) {
1019 /* for avoiding any permanent loop for any reason possibly due to
1022 previous = t->base_addr;
1025 retval = fill_task_pid(target, t);
1028 if (retval != ERROR_OK) {
1033 thread_list = linux_os->thread_list;
1035 while (thread_list != NULL) {
1037 if (t->pid == thread_list->pid) {
1039 if (t->base_addr == thread_list->base_addr) {
1041 if (!thread_list->status) {
1043 if (t->base_addr != thread_list->base_addr)
1044 LOG_INFO("thread base_addr has changed !!");
1046 /* this is not a current thread */
1047 thread_list->base_addr = t->base_addr;
1048 thread_list->status = 1;
1050 /* we don 't update this field any more */
1052 /*thread_list->state = t->state;
1053 thread_list->oncpu = t->oncpu;
1054 thread_list->asid = t->asid;
1057 thread_list->context =
1058 cpu_context_read(target,
1064 /* it is a current thread no need to read context */
1067 linux_os->thread_count++;
1072 thread_list = thread_list->next;
1078 fill_task(target, t);
1079 get_name(target, t);
1080 retval = insert_into_threadlist(target, t);
1081 t->thread_info_addr = 0xdeadbeef;
1085 cpu_context_read(target, t->base_addr,
1086 &t->thread_info_addr);
1088 base_addr = next_task(target, t);
1089 t = calloc(1, sizeof(struct threads));
1090 t->base_addr = base_addr;
1091 linux_os->thread_count++;
1093 t->base_addr = next_task(target, t);
1096 LOG_INFO("update thread done %" PRId64 ", mean%" PRId64 "\n",
1097 (timeval_ms() - start), (timeval_ms() - start) / loop);
1099 linux_os->threads_needs_update = 0;
1103 int linux_gdb_thread_packet(struct target *target,
1104 struct connection *connection, char *packet,
1108 struct linux_os *linux_os =
1109 (struct linux_os *)target->rtos->rtos_specific_params;
1111 if (linux_os->init_task_addr == 0xdeadbeef) {
1112 /* it has not been initialized */
1113 LOG_INFO("received thread request without init task address");
1114 gdb_put_packet(connection, "l", 1);
1118 retval = linux_get_tasks(target, 1);
1120 if (retval != ERROR_OK)
1121 return ERROR_TARGET_FAILURE;
1123 char *out_str = (char *)calloc(1, 350 * sizeof(int64_t));
1124 char *tmp_str = out_str;
1125 tmp_str += sprintf(tmp_str, "m");
1126 struct threads *temp = linux_os->thread_list;
1127 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1130 while (temp != NULL) {
1131 tmp_str += sprintf(tmp_str, ",");
1132 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1136 gdb_put_packet(connection, out_str, strlen(out_str));
1140 int linux_gdb_thread_update(struct target *target,
1141 struct connection *connection, char *packet,
1145 struct linux_os *linux_os = (struct linux_os *)
1146 target->rtos->rtos_specific_params;
1147 struct threads *temp = linux_os->thread_list;
1149 while (temp != NULL) {
1150 if (temp->threadid == linux_os->preupdtate_threadid_count + 1) {
1151 /*LOG_INFO("FOUND");*/
1159 /*LOG_INFO("INTO GDB THREAD UPDATE FOUNDING START TASK");*/
1160 char *out_strr = (char *)calloc(1, 350 * sizeof(int64_t));
1161 char *tmp_strr = out_strr;
1162 tmp_strr += sprintf(tmp_strr, "m");
1163 /*LOG_INFO("CHAR MALLOC & M DONE");*/
1164 tmp_strr += sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1168 while (temp != NULL) {
1169 /*LOG_INFO("INTO GDB THREAD UPDATE WHILE");*/
1170 tmp_strr += sprintf(tmp_strr, ",");
1172 sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1177 gdb_put_packet(connection, out_strr, strlen(out_strr));
1178 linux_os->preupdtate_threadid_count =
1179 linux_os->threadid_count - 1;
1182 gdb_put_packet(connection, "l", 1);
1187 int linux_thread_extra_info(struct target *target,
1188 struct connection *connection, char *packet,
1191 int64_t threadid = 0;
1192 struct linux_os *linux_os = (struct linux_os *)
1193 target->rtos->rtos_specific_params;
1194 sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
1195 /*LOG_INFO("lookup extra info for thread %" SCNx64, threadid);*/
1196 struct threads *temp = linux_os->thread_list;
1198 while (temp != NULL) {
1199 if (temp->threadid == threadid) {
1200 char *pid = " PID: ";
1201 char *pid_current = "*PID: ";
1202 char *name = "NAME: ";
1203 int str_size = strlen(pid) + strlen(name);
1204 char *tmp_str = (char *)calloc(1, str_size + 50);
1205 char *tmp_str_ptr = tmp_str;
1207 /* discriminate cuurent task */
1208 if (temp->status == 3)
1209 tmp_str_ptr += sprintf(tmp_str_ptr, "%s",
1212 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", pid);
1215 sprintf(tmp_str_ptr, "%d", (int)temp->pid);
1216 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", " | ");
1217 sprintf(tmp_str_ptr, "%s", name);
1218 sprintf(tmp_str_ptr, "%s", temp->name);
1220 (char *)calloc(1, strlen(tmp_str) * 2 + 1);
1221 str_to_hex(hex_str, tmp_str);
1222 gdb_put_packet(connection, hex_str, strlen(hex_str));
1231 LOG_INFO("thread not found");
1235 int linux_gdb_T_packet(struct connection *connection,
1236 struct target *target, char *packet, int packet_size)
1239 struct linux_os *linux_os = (struct linux_os *)
1240 target->rtos->rtos_specific_params;
1241 int retval = ERROR_OK;
1242 sscanf(packet, "T%" SCNx64, &threadid);
1244 if (linux_os->threads_needs_update == 0) {
1245 struct threads *temp = linux_os->thread_list;
1246 struct threads *prev = linux_os->thread_list;
1248 while (temp != NULL) {
1249 if (temp->threadid == threadid) {
1250 if (temp->status != 0) {
1251 gdb_put_packet(connection, "OK", 2);
1254 /* delete item in the list */
1255 linux_os->thread_list =
1256 liste_del_task(linux_os->
1259 linux_os->thread_count--;
1260 gdb_put_packet(connection, "E01", 3);
1270 LOG_INFO("gdb requested status on non existing thread");
1271 gdb_put_packet(connection, "E01", 3);
1275 retval = linux_task_update(target, 1);
1276 struct threads *temp = linux_os->thread_list;
1278 while (temp != NULL) {
1279 if (temp->threadid == threadid) {
1280 if (temp->status == 1) {
1281 gdb_put_packet(connection, "OK", 2);
1284 gdb_put_packet(connection, "E01", 3);
1296 int linux_gdb_h_packet(struct connection *connection,
1297 struct target *target, char *packet, int packet_size)
1299 struct linux_os *linux_os = (struct linux_os *)
1300 target->rtos->rtos_specific_params;
1301 struct current_thread *ct = linux_os->current_threads;
1303 /* select to display the current thread of the selected target */
1304 while ((ct != NULL) && (ct->core_id != target->coreid))
1307 int64_t current_gdb_thread_rq;
1309 if (linux_os->threads_lookup == 1) {
1310 if ((ct != NULL) && (ct->threadid == -1)) {
1311 ct = linux_os->current_threads;
1313 while ((ct != NULL) && (ct->threadid == -1))
1318 /* no current thread can be identified
1319 * any way with smp */
1320 LOG_INFO("no current thread identified");
1321 /* attempt to display the name of the 2 threads identified with
1324 ct = linux_os->current_threads;
1326 while ((ct != NULL) && (ct->threadid == -1)) {
1327 t.base_addr = ct->TS;
1328 get_name(target, &t);
1329 LOG_INFO("name of unidentified thread %s",
1334 gdb_put_packet(connection, "OK", 2);
1338 if (packet[1] == 'g') {
1339 sscanf(packet, "Hg%16" SCNx64, ¤t_gdb_thread_rq);
1341 if (current_gdb_thread_rq == 0) {
1342 target->rtos->current_threadid = ct->threadid;
1343 gdb_put_packet(connection, "OK", 2);
1345 target->rtos->current_threadid =
1346 current_gdb_thread_rq;
1347 gdb_put_packet(connection, "OK", 2);
1349 } else if (packet[1] == 'c') {
1350 sscanf(packet, "Hc%16" SCNx64, ¤t_gdb_thread_rq);
1352 if ((current_gdb_thread_rq == 0) ||
1353 (current_gdb_thread_rq == ct->threadid)) {
1354 target->rtos->current_threadid = ct->threadid;
1355 gdb_put_packet(connection, "OK", 2);
1357 gdb_put_packet(connection, "E01", 3);
1360 gdb_put_packet(connection, "OK", 2);
1365 static int linux_thread_packet(struct connection *connection, char *packet,
1368 int retval = ERROR_OK;
1369 struct current_thread *ct;
1370 struct target *target = get_target_from_connection(connection);
1371 struct linux_os *linux_os = (struct linux_os *)
1372 target->rtos->rtos_specific_params;
1374 switch (packet[0]) {
1375 case 'T': /* Is thread alive?*/
1377 linux_gdb_T_packet(connection, target, packet, packet_size);
1379 case 'H': /* Set current thread */
1380 /* ( 'c' for step and continue, 'g' for all other operations )*/
1381 /*LOG_INFO(" H packet received '%s'", packet);*/
1382 linux_gdb_h_packet(connection, target, packet, packet_size);
1386 if ((strstr(packet, "qSymbol"))) {
1387 if (rtos_qsymbol(connection, packet, packet_size) == 1) {
1388 gdb_put_packet(connection, "OK", 2);
1390 linux_compute_virt2phys(target,
1397 } else if (strstr(packet, "qfThreadInfo")) {
1398 if (linux_os->thread_list == NULL) {
1399 retval = linux_gdb_thread_packet(target,
1405 retval = linux_gdb_thread_update(target,
1411 } else if (strstr(packet, "qsThreadInfo")) {
1412 gdb_put_packet(connection, "l", 1);
1414 } else if (strstr(packet, "qThreadExtraInfo,")) {
1415 linux_thread_extra_info(target, connection, packet,
1419 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1424 /* previously response was : thread not found
1425 * gdb_put_packet(connection, "E01", 3); */
1426 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1430 if (linux_os->threads_lookup == 1) {
1431 ct = linux_os->current_threads;
1433 while ((ct != NULL) && (ct->core_id) != target->coreid)
1436 if ((ct != NULL) && (ct->threadid == -1)) {
1437 ct = linux_os->current_threads;
1439 while ((ct != NULL) && (ct->threadid == -1))
1443 if ((ct != NULL) && (ct->threadid !=
1446 && (target->rtos->current_threadid != -1))
1447 LOG_WARNING("WARNING! current GDB thread do not match" \
1448 "current thread running." \
1449 "Switch thread in GDB to threadid %d",
1452 LOG_INFO("threads_needs_update = 1");
1453 linux_os->threads_needs_update = 1;
1457 /* if a packet handler returned an error, exit input loop */
1458 if (retval != ERROR_OK)
1465 static int linux_os_smp_init(struct target *target)
1467 struct target_list *head;
1468 /* keep only target->rtos */
1469 struct rtos *rtos = target->rtos;
1470 struct linux_os *os_linux =
1471 (struct linux_os *)rtos->rtos_specific_params;
1472 struct current_thread *ct;
1473 head = target->head;
1475 while (head != (struct target_list *)NULL) {
1476 if (head->target->rtos != rtos) {
1477 struct linux_os *smp_os_linux =
1478 (struct linux_os *)head->target->rtos->
1479 rtos_specific_params;
1480 /* remap smp target on rtos */
1481 free(head->target->rtos);
1482 head->target->rtos = rtos;
1483 /* reuse allocated ct */
1484 ct = smp_os_linux->current_threads;
1486 ct->TS = 0xdeadbeef;
1487 ct->core_id = head->target->coreid;
1488 os_linux->current_threads =
1489 add_current_thread(os_linux->current_threads, ct);
1490 os_linux->nr_cpus++;
1500 static int linux_os_create(struct target *target)
1502 struct linux_os *os_linux = calloc(1, sizeof(struct linux_os));
1503 struct current_thread *ct = calloc(1, sizeof(struct current_thread));
1504 LOG_INFO("linux os creation\n");
1505 os_linux->init_task_addr = 0xdeadbeef;
1506 os_linux->name = "linux";
1507 os_linux->thread_list = NULL;
1508 os_linux->thread_count = 0;
1509 target->rtos->current_threadid = -1;
1510 os_linux->nr_cpus = 1;
1511 os_linux->threads_lookup = 0;
1512 os_linux->threads_needs_update = 0;
1513 os_linux->threadid_count = 1;
1514 os_linux->current_threads = NULL;
1515 target->rtos->rtos_specific_params = (void *)os_linux;
1516 ct->core_id = target->coreid;
1518 ct->TS = 0xdeadbeef;
1519 os_linux->current_threads =
1520 add_current_thread(os_linux->current_threads, ct);
1521 /* overload rtos thread default handler */
1522 target->rtos->gdb_thread_packet = linux_thread_packet;
1523 /* initialize a default virt 2 phys translation */
1524 os_linux->phys_mask = ~0xc0000000;
1525 os_linux->phys_base = 0x0;
1529 static char *linux_ps_command(struct target *target)
1531 struct linux_os *linux_os = (struct linux_os *)
1532 target->rtos->rtos_specific_params;
1533 int retval = ERROR_OK;
1536 if (linux_os->threads_lookup == 0)
1537 retval = linux_get_tasks(target, 1);
1539 if (linux_os->threads_needs_update != 0)
1540 retval = linux_task_update(target, 0);
1543 if (retval == ERROR_OK) {
1544 struct threads *temp = linux_os->thread_list;
1546 LOG_INFO("allocation for %d threads line",
1547 linux_os->thread_count);
1548 display = calloc((linux_os->thread_count + 2) * 80, 1);
1554 tmp += sprintf(tmp, "PID\t\tCPU\t\tASID\t\tNAME\n");
1555 tmp += sprintf(tmp, "---\t\t---\t\t----\t\t----\n");
1557 while (temp != NULL) {
1562 "%d\t\t%d\t\t%x\t\t%s\n",
1563 (int)temp->pid, temp->oncpu,
1564 temp->asid, temp->name);
1568 "%d\t\t%d\t\t%x\t\t%s\n",
1569 (int)temp->pid, temp->oncpu,
1570 temp->asid, temp->name);
1580 display = calloc(40, 1);
1581 sprintf(display, "linux_ps_command failed\n");