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");
428 int get_name(struct target *target, struct threads *t)
431 uint32_t full_name[4];
432 uint32_t comm = t->base_addr + COMM;
435 for (i = 0; i < 17; i++)
438 retval = linux_read_memory(target, comm, 4, 4, (uint8_t *) full_name);
440 if (retval != ERROR_OK) {
441 LOG_ERROR("get_name: unable to read memory\n");
445 uint32_t raw_name = target_buffer_get_u32(target,
448 t->name[3] = raw_name >> 24;
449 t->name[2] = raw_name >> 16;
450 t->name[1] = raw_name >> 8;
451 t->name[0] = raw_name;
453 target_buffer_get_u32(target, (const uint8_t *)&full_name[1]);
454 t->name[7] = raw_name >> 24;
455 t->name[6] = raw_name >> 16;
456 t->name[5] = raw_name >> 8;
457 t->name[4] = raw_name;
459 target_buffer_get_u32(target, (const uint8_t *)&full_name[2]);
460 t->name[11] = raw_name >> 24;
461 t->name[10] = raw_name >> 16;
462 t->name[9] = raw_name >> 8;
463 t->name[8] = raw_name;
465 target_buffer_get_u32(target, (const uint8_t *)&full_name[3]);
466 t->name[15] = raw_name >> 24;
467 t->name[14] = raw_name >> 16;
468 t->name[13] = raw_name >> 8;
469 t->name[12] = raw_name;
474 int get_current(struct target *target, int create)
476 struct target_list *head;
481 uint8_t *buffer = calloc(1, 4);
482 struct linux_os *linux_os = (struct linux_os *)
483 target->rtos->rtos_specific_params;
484 struct current_thread *ctt = linux_os->current_threads;
486 /* invalid current threads content */
487 while (ctt != NULL) {
489 ctt->TS = 0xdeadbeef;
493 while (head != (struct target_list *)NULL) {
494 struct reg **reg_list;
498 if (target_get_gdb_reg_list(head->target, ®_list,
499 ®_list_size) != ERROR_OK) {
501 return ERROR_TARGET_FAILURE;
504 if (!reg_list[13]->valid)
505 reg_list[13]->type->get(reg_list[13]);
507 buf = reg_list[13]->value;
508 val = get_buffer(target, buf);
509 ti_addr = (val & 0xffffe000);
510 uint32_t TS_addr = ti_addr + 0xc;
511 retval = fill_buffer(target, TS_addr, buffer);
513 if (retval == ERROR_OK) {
514 uint32_t TS = get_buffer(target, buffer);
515 uint32_t cpu, on_cpu = TS + ONCPU;
516 retval = fill_buffer(target, on_cpu, buffer);
518 if (retval == ERROR_OK) {
519 /*uint32_t cpu = get_buffer(target, buffer);*/
520 struct current_thread *ct =
521 linux_os->current_threads;
522 cpu = head->target->coreid;
524 while ((ct != NULL) && (ct->core_id != (int32_t) cpu))
527 if ((ct != NULL) && (ct->TS == 0xdeadbeef))
531 ("error in linux current thread update");
535 t = calloc(1, sizeof(struct threads));
536 t->base_addr = ct->TS;
537 fill_task(target, t);
540 insert_into_threadlist(target, t);
542 t->thread_info_addr = 0xdeadbeef;
543 ct->threadid = t->threadid;
544 linux_os->thread_count++;
548 /*LOG_INFO("Creation of current thread %s",t->name);*/
562 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
563 uint32_t *thread_info_addr_old)
565 struct cpu_context *context = calloc(1, sizeof(struct cpu_context));
566 uint32_t preempt_count_addr = 0;
567 uint32_t registers[10];
568 uint8_t *buffer = calloc(1, 4);
569 uint32_t stack = base_addr + QAT;
570 uint32_t thread_info_addr = 0;
571 uint32_t thread_info_addr_update = 0;
572 int retval = ERROR_FAIL;
573 context->R4 = 0xdeadbeef;
574 context->R5 = 0xdeadbeef;
575 context->R6 = 0xdeadbeef;
576 context->R7 = 0xdeadbeef;
577 context->R8 = 0xdeadbeef;
578 context->R9 = 0xdeadbeef;
579 context->IP = 0xdeadbeef;
580 context->FP = 0xdeadbeef;
581 context->SP = 0xdeadbeef;
582 context->PC = 0xdeadbeef;
585 if (*thread_info_addr_old == 0xdeadbeef) {
586 retval = fill_buffer(target, stack, buffer);
588 if (retval == ERROR_OK)
589 thread_info_addr = get_buffer(target, buffer);
591 LOG_ERROR("cpu_context: unable to read memory");
593 thread_info_addr_update = thread_info_addr;
595 thread_info_addr = *thread_info_addr_old;
597 preempt_count_addr = thread_info_addr + PREEMPT;
598 retval = fill_buffer(target, preempt_count_addr, buffer);
600 if (retval == ERROR_OK)
601 context->preempt_count = get_buffer(target, buffer);
603 if (*thread_info_addr_old != 0xdeadbeef) {
605 ("cpu_context: cannot read at thread_info_addr");
607 if (*thread_info_addr_old < LINUX_USER_KERNEL_BORDER)
609 ("cpu_context : thread_info_addr in userspace!!!");
611 *thread_info_addr_old = 0xdeadbeef;
615 LOG_ERROR("cpu_context: unable to read memory");
618 thread_info_addr += CPU_CONT;
620 retval = linux_read_memory(target, thread_info_addr, 4, 10,
621 (uint8_t *) registers);
623 if (retval != ERROR_OK) {
625 LOG_ERROR("cpu_context: unable to read memory\n");
630 target_buffer_get_u32(target, (const uint8_t *)®isters[0]);
632 target_buffer_get_u32(target, (const uint8_t *)®isters[1]);
634 target_buffer_get_u32(target, (const uint8_t *)®isters[2]);
636 target_buffer_get_u32(target, (const uint8_t *)®isters[3]);
638 target_buffer_get_u32(target, (const uint8_t *)®isters[4]);
640 target_buffer_get_u32(target, (const uint8_t *)®isters[5]);
642 target_buffer_get_u32(target, (const uint8_t *)®isters[6]);
644 target_buffer_get_u32(target, (const uint8_t *)®isters[7]);
646 target_buffer_get_u32(target, (const uint8_t *)®isters[8]);
648 target_buffer_get_u32(target, (const uint8_t *)®isters[9]);
650 if (*thread_info_addr_old == 0xdeadbeef)
651 *thread_info_addr_old = thread_info_addr_update;
658 uint32_t next_task(struct target *target, struct threads *t)
660 uint8_t *buffer = calloc(1, 4);
661 uint32_t next_addr = t->base_addr + NEXT;
662 int retval = fill_buffer(target, next_addr, buffer);
664 if (retval == ERROR_OK) {
665 uint32_t val = get_buffer(target, buffer);
670 LOG_ERROR("next task: unable to read memory");
677 struct current_thread *add_current_thread(struct current_thread *currents,
678 struct current_thread *ct)
682 if (currents == NULL) {
686 struct current_thread *temp = currents;
688 while (temp->next != NULL)
696 struct threads *liste_del_task(struct threads *task_list, struct threads **t,
697 struct threads *prev)
699 LOG_INFO("del task %" PRId64, (*t)->threadid);
700 prev->next = (*t)->next;
702 if (prev == task_list)
705 /* free content of threads */
714 struct threads *liste_add_task(struct threads *task_list, struct threads *t,
715 struct threads **last)
720 if (task_list == NULL) {
724 struct threads *temp = task_list;
726 while (temp->next != NULL)
740 static int current_pid(struct linux_os *linux_os, uint32_t pid)
742 static int current_base_addr(struct linux_os *linux_os, uint32_t base_addr)
745 struct current_thread *ct = linux_os->current_threads;
748 while ((ct != NULL) && (ct->pid != pid))
750 while ((ct != NULL) && (ct->TS != base_addr))
754 if ((ct != NULL) && (ct->pid == pid))
756 if ((ct != NULL) && (ct->TS == base_addr))
763 int linux_get_tasks(struct target *target, int context)
767 struct linux_os *linux_os = (struct linux_os *)
768 target->rtos->rtos_specific_params;
769 linux_os->thread_list = NULL;
770 linux_os->thread_count = 0;
772 if (linux_os->init_task_addr == 0xdeadbeef) {
773 LOG_INFO("no init symbol\n");
777 int64_t start = timeval_ms();
779 struct threads *t = calloc(1, sizeof(struct threads));
780 struct threads *last = NULL;
781 t->base_addr = linux_os->init_task_addr;
782 /* retrieve the thread id , currently running in the different smp core */
783 get_current(target, 1);
785 while (((t->base_addr != linux_os->init_task_addr) &&
786 (t->base_addr != 0)) || (loop == 0)) {
788 fill_task(target, t);
789 retval = get_name(target, t);
791 if (loop > MAX_THREADS) {
793 LOG_INFO("more than %d threads !!", MAX_THREADS);
797 if (retval != ERROR_OK) {
802 /* check that this thread is not one the current threads already
806 if (!current_pid(linux_os, t->pid)) {
808 if (!current_base_addr(linux_os, t->base_addr)) {
810 t->threadid = linux_os->threadid_count;
812 linux_os->threadid_count++;
814 linux_os->thread_list =
815 liste_add_task(linux_os->thread_list, t, &last);
816 /* no interest to fill the context if it is a current thread. */
817 linux_os->thread_count++;
818 t->thread_info_addr = 0xdeadbeef;
822 cpu_context_read(target, t->base_addr,
823 &t->thread_info_addr);
825 /*LOG_INFO("thread %s is a current thread already created",t->name); */
829 uint32_t base_addr = next_task(target, t);
830 t = calloc(1, sizeof(struct threads));
831 t->base_addr = base_addr;
834 linux_os->threads_lookup = 1;
835 linux_os->threads_needs_update = 0;
836 linux_os->preupdtate_threadid_count = linux_os->threadid_count - 1;
837 /* check that all current threads have been identified */
839 LOG_INFO("complete time %" PRId64 ", thread mean %" PRId64 "\n",
840 (timeval_ms() - start),
841 (timeval_ms() - start) / linux_os->threadid_count);
843 LOG_INFO("threadid count %d", linux_os->threadid_count);
849 static int clean_threadlist(struct target *target)
851 struct linux_os *linux_os = (struct linux_os *)
852 target->rtos->rtos_specific_params;
853 struct threads *old, *temp = linux_os->thread_list;
855 while (temp != NULL) {
868 static int linux_os_clean(struct target *target)
870 struct linux_os *os_linux = (struct linux_os *)
871 target->rtos->rtos_specific_params;
872 clean_threadlist(target);
873 os_linux->init_task_addr = 0xdeadbeef;
874 os_linux->name = "linux";
875 os_linux->thread_list = NULL;
876 os_linux->thread_count = 0;
877 os_linux->nr_cpus = 0;
878 os_linux->threads_lookup = 0;
879 os_linux->threads_needs_update = 0;
880 os_linux->threadid_count = 1;
884 static int insert_into_threadlist(struct target *target, struct threads *t)
886 struct linux_os *linux_os = (struct linux_os *)
887 target->rtos->rtos_specific_params;
888 struct threads *temp = linux_os->thread_list;
889 t->threadid = linux_os->threadid_count;
890 linux_os->threadid_count++;
895 linux_os->thread_list = t;
897 while (temp->next != NULL)
907 static void linux_identify_current_threads(struct target *target)
909 struct linux_os *linux_os = (struct linux_os *)
910 target->rtos->rtos_specific_params;
911 struct threads *thread_list = linux_os->thread_list;
912 struct current_thread *ct = linux_os->current_threads;
913 struct threads *t = NULL;
915 while ((ct != NULL)) {
916 if (ct->threadid == -1) {
918 /* un-identified thread */
920 t = calloc(1, sizeof(struct threads));
921 t->base_addr = ct->TS;
924 if (fill_task_pid(target, t) != ERROR_OK) {
928 ("linux identify_current_threads: unable to read pid");
933 /* search in the list of threads if pid
935 while ((thread_list != NULL) && (found == 0)) {
937 if (thread_list->pid == t->pid) {
939 if (thread_list->base_addr == t->base_addr) {
945 thread_list = thread_list->next;
949 /* it is a new thread */
950 if (fill_task(target, t) != ERROR_OK)
954 insert_into_threadlist(target, t);
955 t->thread_info_addr = 0xdeadbeef;
959 ct->threadid = t->threadid;
963 linux_os->thread_count++;
966 LOG_INFO("current thread core %x identified %s",
967 ct->core_id, t->name);
969 LOG_INFO("current thread core %x, reused %s",
970 ct->core_id, t->name);
976 tmp.base_addr = ct->TS;
977 get_name(target, &tmp);
978 LOG_INFO("current thread core %x , already identified %s !!!",
979 ct->core_id, tmp.name);
989 LOG_ERROR("unable to read pid");
995 static int linux_task_update(struct target *target, int context)
997 struct linux_os *linux_os = (struct linux_os *)
998 target->rtos->rtos_specific_params;
999 struct threads *thread_list = linux_os->thread_list;
1002 linux_os->thread_count = 0;
1004 /*thread_list = thread_list->next; skip init_task*/
1005 while (thread_list != NULL) {
1006 thread_list->status = 0; /*setting all tasks to dead state*/
1008 if (thread_list->context) {
1009 free(thread_list->context);
1010 thread_list->context = NULL;
1013 thread_list = thread_list->next;
1018 if (linux_os->init_task_addr == 0xdeadbeef) {
1019 LOG_INFO("no init symbol\n");
1022 int64_t start = timeval_ms();
1023 struct threads *t = calloc(1, sizeof(struct threads));
1024 uint32_t previous = 0xdeadbeef;
1025 t->base_addr = linux_os->init_task_addr;
1026 retval = get_current(target, 0);
1027 /*check that all current threads have been identified */
1028 linux_identify_current_threads(target);
1030 while (((t->base_addr != linux_os->init_task_addr) &&
1031 (t->base_addr != previous)) || (loop == 0)) {
1032 /* for avoiding any permanent loop for any reason possibly due to
1035 previous = t->base_addr;
1038 retval = fill_task_pid(target, t);
1041 if (retval != ERROR_OK) {
1046 thread_list = linux_os->thread_list;
1048 while (thread_list != NULL) {
1050 if (t->pid == thread_list->pid) {
1052 if (t->base_addr == thread_list->base_addr) {
1054 if (!thread_list->status) {
1056 if (t->base_addr != thread_list->base_addr)
1057 LOG_INFO("thread base_addr has changed !!");
1059 /* this is not a current thread */
1060 thread_list->base_addr = t->base_addr;
1061 thread_list->status = 1;
1063 /* we don 't update this field any more */
1065 /*thread_list->state = t->state;
1066 thread_list->oncpu = t->oncpu;
1067 thread_list->asid = t->asid;
1070 thread_list->context =
1071 cpu_context_read(target,
1077 /* it is a current thread no need to read context */
1080 linux_os->thread_count++;
1085 thread_list = thread_list->next;
1091 fill_task(target, t);
1092 get_name(target, t);
1093 retval = insert_into_threadlist(target, t);
1094 t->thread_info_addr = 0xdeadbeef;
1098 cpu_context_read(target, t->base_addr,
1099 &t->thread_info_addr);
1101 base_addr = next_task(target, t);
1102 t = calloc(1, sizeof(struct threads));
1103 t->base_addr = base_addr;
1104 linux_os->thread_count++;
1106 t->base_addr = next_task(target, t);
1109 LOG_INFO("update thread done %" PRId64 ", mean%" PRId64 "\n",
1110 (timeval_ms() - start), (timeval_ms() - start) / loop);
1112 linux_os->threads_needs_update = 0;
1116 int linux_gdb_thread_packet(struct target *target,
1117 struct connection *connection, char *packet,
1121 struct linux_os *linux_os =
1122 (struct linux_os *)target->rtos->rtos_specific_params;
1124 if (linux_os->init_task_addr == 0xdeadbeef) {
1125 /* it has not been initialized */
1126 LOG_INFO("received thread request without init task address");
1127 gdb_put_packet(connection, "l", 1);
1131 retval = linux_get_tasks(target, 1);
1133 if (retval != ERROR_OK)
1134 return ERROR_TARGET_FAILURE;
1136 char *out_str = (char *)calloc(1, 350 * sizeof(int64_t));
1137 char *tmp_str = out_str;
1138 tmp_str += sprintf(tmp_str, "m");
1139 struct threads *temp = linux_os->thread_list;
1140 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1143 while (temp != NULL) {
1144 tmp_str += sprintf(tmp_str, ",");
1145 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1149 gdb_put_packet(connection, out_str, strlen(out_str));
1153 int linux_gdb_thread_update(struct target *target,
1154 struct connection *connection, char *packet,
1158 struct linux_os *linux_os = (struct linux_os *)
1159 target->rtos->rtos_specific_params;
1160 struct threads *temp = linux_os->thread_list;
1162 while (temp != NULL) {
1163 if (temp->threadid == linux_os->preupdtate_threadid_count + 1) {
1164 /*LOG_INFO("FOUND");*/
1172 /*LOG_INFO("INTO GDB THREAD UPDATE FOUNDING START TASK");*/
1173 char *out_strr = (char *)calloc(1, 350 * sizeof(int64_t));
1174 char *tmp_strr = out_strr;
1175 tmp_strr += sprintf(tmp_strr, "m");
1176 /*LOG_INFO("CHAR MALLOC & M DONE");*/
1177 tmp_strr += sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1181 while (temp != NULL) {
1182 /*LOG_INFO("INTO GDB THREAD UPDATE WHILE");*/
1183 tmp_strr += sprintf(tmp_strr, ",");
1185 sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1190 gdb_put_packet(connection, out_strr, strlen(out_strr));
1191 linux_os->preupdtate_threadid_count =
1192 linux_os->threadid_count - 1;
1195 gdb_put_packet(connection, "l", 1);
1200 int linux_thread_extra_info(struct target *target,
1201 struct connection *connection, char *packet,
1204 int64_t threadid = 0;
1205 struct linux_os *linux_os = (struct linux_os *)
1206 target->rtos->rtos_specific_params;
1207 sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
1208 /*LOG_INFO("lookup extra info for thread %" SCNx64, threadid);*/
1209 struct threads *temp = linux_os->thread_list;
1211 while (temp != NULL) {
1212 if (temp->threadid == threadid) {
1213 char *pid = " PID: ";
1214 char *pid_current = "*PID: ";
1215 char *name = "NAME: ";
1216 int str_size = strlen(pid) + strlen(name);
1217 char *tmp_str = (char *)calloc(1, str_size + 50);
1218 char *tmp_str_ptr = tmp_str;
1220 /* discriminate cuurent task */
1221 if (temp->status == 3)
1222 tmp_str_ptr += sprintf(tmp_str_ptr, "%s",
1225 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", pid);
1228 sprintf(tmp_str_ptr, "%d", (int)temp->pid);
1229 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", " | ");
1230 sprintf(tmp_str_ptr, "%s", name);
1231 sprintf(tmp_str_ptr, "%s", temp->name);
1233 (char *)calloc(1, strlen(tmp_str) * 2 + 1);
1234 str_to_hex(hex_str, tmp_str);
1235 gdb_put_packet(connection, hex_str, strlen(hex_str));
1244 LOG_INFO("thread not found");
1248 int linux_gdb_T_packet(struct connection *connection,
1249 struct target *target, char *packet, int packet_size)
1252 struct linux_os *linux_os = (struct linux_os *)
1253 target->rtos->rtos_specific_params;
1254 int retval = ERROR_OK;
1255 sscanf(packet, "T%" SCNx64, &threadid);
1257 if (linux_os->threads_needs_update == 0) {
1258 struct threads *temp = linux_os->thread_list;
1259 struct threads *prev = linux_os->thread_list;
1261 while (temp != NULL) {
1262 if (temp->threadid == threadid) {
1263 if (temp->status != 0) {
1264 gdb_put_packet(connection, "OK", 2);
1267 /* delete item in the list */
1268 linux_os->thread_list =
1269 liste_del_task(linux_os->
1272 linux_os->thread_count--;
1273 gdb_put_packet(connection, "E01", 3);
1283 LOG_INFO("gdb requested status on non existing thread");
1284 gdb_put_packet(connection, "E01", 3);
1288 retval = linux_task_update(target, 1);
1289 struct threads *temp = linux_os->thread_list;
1291 while (temp != NULL) {
1292 if (temp->threadid == threadid) {
1293 if (temp->status == 1) {
1294 gdb_put_packet(connection, "OK", 2);
1297 gdb_put_packet(connection, "E01", 3);
1309 int linux_gdb_h_packet(struct connection *connection,
1310 struct target *target, char *packet, int packet_size)
1312 struct linux_os *linux_os = (struct linux_os *)
1313 target->rtos->rtos_specific_params;
1314 struct current_thread *ct = linux_os->current_threads;
1316 /* select to display the current thread of the selected target */
1317 while ((ct != NULL) && (ct->core_id != target->coreid))
1320 int64_t current_gdb_thread_rq;
1322 if (linux_os->threads_lookup == 1) {
1323 if ((ct != NULL) && (ct->threadid == -1)) {
1324 ct = linux_os->current_threads;
1326 while ((ct != NULL) && (ct->threadid == -1))
1331 /* no current thread can be identified
1332 * any way with smp */
1333 LOG_INFO("no current thread identified");
1334 /* attempt to display the name of the 2 threads identified with
1337 ct = linux_os->current_threads;
1339 while ((ct != NULL) && (ct->threadid == -1)) {
1340 t.base_addr = ct->TS;
1341 get_name(target, &t);
1342 LOG_INFO("name of unidentified thread %s",
1347 gdb_put_packet(connection, "OK", 2);
1351 if (packet[1] == 'g') {
1352 sscanf(packet, "Hg%16" SCNx64, ¤t_gdb_thread_rq);
1354 if (current_gdb_thread_rq == 0) {
1355 target->rtos->current_threadid = ct->threadid;
1356 gdb_put_packet(connection, "OK", 2);
1358 target->rtos->current_threadid =
1359 current_gdb_thread_rq;
1360 gdb_put_packet(connection, "OK", 2);
1362 } else if (packet[1] == 'c') {
1363 sscanf(packet, "Hc%16" SCNx64, ¤t_gdb_thread_rq);
1365 if ((current_gdb_thread_rq == 0) ||
1366 (current_gdb_thread_rq == ct->threadid)) {
1367 target->rtos->current_threadid = ct->threadid;
1368 gdb_put_packet(connection, "OK", 2);
1370 gdb_put_packet(connection, "E01", 3);
1373 gdb_put_packet(connection, "OK", 2);
1378 static int linux_thread_packet(struct connection *connection, char *packet,
1381 int retval = ERROR_OK;
1382 struct current_thread *ct;
1383 struct target *target = get_target_from_connection(connection);
1384 struct linux_os *linux_os = (struct linux_os *)
1385 target->rtos->rtos_specific_params;
1387 switch (packet[0]) {
1388 case 'T': /* Is thread alive?*/
1390 linux_gdb_T_packet(connection, target, packet, packet_size);
1392 case 'H': /* Set current thread */
1393 /* ( 'c' for step and continue, 'g' for all other operations )*/
1394 /*LOG_INFO(" H packet received '%s'", packet);*/
1395 linux_gdb_h_packet(connection, target, packet, packet_size);
1399 if ((strstr(packet, "qSymbol"))) {
1400 if (rtos_qsymbol(connection, packet, packet_size) == 1) {
1401 linux_compute_virt2phys(target,
1408 } else if (strstr(packet, "qfThreadInfo")) {
1409 if (linux_os->thread_list == NULL) {
1410 retval = linux_gdb_thread_packet(target,
1416 retval = linux_gdb_thread_update(target,
1422 } else if (strstr(packet, "qsThreadInfo")) {
1423 gdb_put_packet(connection, "l", 1);
1425 } else if (strstr(packet, "qThreadExtraInfo,")) {
1426 linux_thread_extra_info(target, connection, packet,
1430 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1435 /* previously response was : thread not found
1436 * gdb_put_packet(connection, "E01", 3); */
1437 retval = GDB_THREAD_PACKET_NOT_CONSUMED;
1441 if (linux_os->threads_lookup == 1) {
1442 ct = linux_os->current_threads;
1444 while ((ct != NULL) && (ct->core_id) != target->coreid)
1447 if ((ct != NULL) && (ct->threadid == -1)) {
1448 ct = linux_os->current_threads;
1450 while ((ct != NULL) && (ct->threadid == -1))
1454 if ((ct != NULL) && (ct->threadid !=
1457 && (target->rtos->current_threadid != -1))
1458 LOG_WARNING("WARNING! current GDB thread do not match" \
1459 "current thread running." \
1460 "Switch thread in GDB to threadid %d",
1463 LOG_INFO("threads_needs_update = 1");
1464 linux_os->threads_needs_update = 1;
1468 /* if a packet handler returned an error, exit input loop */
1469 if (retval != ERROR_OK)
1476 static int linux_os_smp_init(struct target *target)
1478 struct target_list *head;
1479 /* keep only target->rtos */
1480 struct rtos *rtos = target->rtos;
1481 struct linux_os *os_linux =
1482 (struct linux_os *)rtos->rtos_specific_params;
1483 struct current_thread *ct;
1484 head = target->head;
1486 while (head != (struct target_list *)NULL) {
1487 if (head->target->rtos != rtos) {
1488 struct linux_os *smp_os_linux =
1489 (struct linux_os *)head->target->rtos->
1490 rtos_specific_params;
1491 /* remap smp target on rtos */
1492 free(head->target->rtos);
1493 head->target->rtos = rtos;
1494 /* reuse allocated ct */
1495 ct = smp_os_linux->current_threads;
1497 ct->TS = 0xdeadbeef;
1498 ct->core_id = head->target->coreid;
1499 os_linux->current_threads =
1500 add_current_thread(os_linux->current_threads, ct);
1501 os_linux->nr_cpus++;
1511 static int linux_os_create(struct target *target)
1513 struct linux_os *os_linux = calloc(1, sizeof(struct linux_os));
1514 struct current_thread *ct = calloc(1, sizeof(struct current_thread));
1515 LOG_INFO("linux os creation\n");
1516 os_linux->init_task_addr = 0xdeadbeef;
1517 os_linux->name = "linux";
1518 os_linux->thread_list = NULL;
1519 os_linux->thread_count = 0;
1520 target->rtos->current_threadid = -1;
1521 os_linux->nr_cpus = 1;
1522 os_linux->threads_lookup = 0;
1523 os_linux->threads_needs_update = 0;
1524 os_linux->threadid_count = 1;
1525 os_linux->current_threads = NULL;
1526 target->rtos->rtos_specific_params = (void *)os_linux;
1527 ct->core_id = target->coreid;
1529 ct->TS = 0xdeadbeef;
1530 os_linux->current_threads =
1531 add_current_thread(os_linux->current_threads, ct);
1532 /* overload rtos thread default handler */
1533 target->rtos->gdb_thread_packet = linux_thread_packet;
1534 /* initialize a default virt 2 phys translation */
1535 os_linux->phys_mask = ~0xc0000000;
1536 os_linux->phys_base = 0x0;
1540 static char *linux_ps_command(struct target *target)
1542 struct linux_os *linux_os = (struct linux_os *)
1543 target->rtos->rtos_specific_params;
1544 int retval = ERROR_OK;
1547 if (linux_os->threads_lookup == 0)
1548 retval = linux_get_tasks(target, 1);
1550 if (linux_os->threads_needs_update != 0)
1551 retval = linux_task_update(target, 0);
1554 if (retval == ERROR_OK) {
1555 struct threads *temp = linux_os->thread_list;
1557 LOG_INFO("allocation for %d threads line",
1558 linux_os->thread_count);
1559 display = calloc((linux_os->thread_count + 2) * 80, 1);
1565 tmp += sprintf(tmp, "PID\t\tCPU\t\tASID\t\tNAME\n");
1566 tmp += sprintf(tmp, "---\t\t---\t\t----\t\t----\n");
1568 while (temp != NULL) {
1573 "%d\t\t%d\t\t%x\t\t%s\n",
1574 (int)temp->pid, temp->oncpu,
1575 temp->asid, temp->name);
1579 "%d\t\t%d\t\t%x\t\t%s\n",
1580 (int)temp->pid, temp->oncpu,
1581 temp->asid, temp->name);
1591 display = calloc(40, 1);
1592 sprintf(display, "linux_ps_command failed\n");