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, see <http://www.gnu.org/licenses/>. *
18 ***************************************************************************/
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"
31 #include "rtos_standard_stackings.h"
32 #include <target/register.h>
33 #include "server/gdb_server.h"
35 #define LINUX_USER_KERNEL_BORDER 0xc0000000
36 #include "linux_header.h"
38 #define MAX_THREADS 200
42 uint32_t init_task_addr;
45 int preupdtate_threadid_count;
48 int threads_needs_update;
49 struct current_thread *current_threads;
50 struct threads *thread_list;
51 /* virt2phys parameter */
56 struct current_thread {
63 struct current_thread *next;
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 */
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;
93 uint32_t preempt_count;
95 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
97 static int insert_into_threadlist(struct target *target, struct threads *t);
99 static int linux_os_create(struct target *target);
101 static int linux_os_dummy_update(struct rtos *rtos)
103 /* update is done only when thread request come
104 * too many thread to do it on each stop */
108 static int linux_compute_virt2phys(struct target *target, uint32_t address)
110 struct linux_os *linux_os = (struct linux_os *)
111 target->rtos->rtos_specific_params;
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;
121 linux_os->init_task_addr = address;
122 address = address & linux_os->phys_mask;
123 linux_os->phys_base = pa - address;
127 static int linux_read_memory(struct target *target,
128 uint32_t address, uint32_t size, uint32_t count,
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;
136 if (address < 0xc000000) {
137 LOG_ERROR("linux awareness : address in user space");
141 target_read_phys_memory(target, pa, size, count, buffer);
143 target_read_memory(target, address, size, count, buffer);
147 static char *reg_converter(char *buffer, void *reg, int size)
151 for (i = 0; i < size; i++)
152 buffer += sprintf(buffer, "%02x", ((uint8_t *) reg)[i]);
157 int fill_buffer(struct target *target, uint32_t addr, uint8_t *buffer)
160 if ((addr & 0xfffffffc) != addr)
161 LOG_INFO("unaligned address %" PRIx32 "!!", addr);
163 int retval = linux_read_memory(target, addr, 4, 1, buffer);
168 uint32_t get_buffer(struct target *target, const uint8_t *buffer)
171 const uint8_t *value_ptr = buffer;
172 value = target_buffer_get_u32(target, value_ptr);
176 static int linux_os_thread_reg_list(struct rtos *rtos,
177 int64_t thread_id, char **hex_reg_list)
179 struct target *target = rtos->target;
180 struct linux_os *linux_os = (struct linux_os *)
181 target->rtos->rtos_specific_params;
183 struct current_thread *tmp = linux_os->current_threads;
184 struct current_thread *next;
188 /* check if a current thread is requested */
192 if (next->threadid == thread_id)
196 } while ((found == 0) && (next != tmp) && (next != NULL));
199 /* search target to perfom the access */
200 struct reg **reg_list;
201 int reg_list_size, reg_packet_size = 0;
202 struct target_list *head;
206 if (head->target->coreid == next->core_id) {
208 target = head->target;
213 } while ((head != (struct target_list *)NULL) && (found == 0));
218 "current thread %" PRIx64 ": no target to perform access of core id %" PRIx32,
224 /*LOG_INFO("thread %lx current on core %x",thread_id,
227 target_get_gdb_reg_list(target, ®_list, ®_list_size,
230 if (retval != ERROR_OK)
233 for (i = 0; i < reg_list_size; i++)
234 reg_packet_size += reg_list[i]->size;
236 assert(reg_packet_size > 0);
238 *hex_reg_list = malloc(DIV_ROUND_UP(reg_packet_size, 8) * 2);
240 hex_string = *hex_reg_list;
242 for (i = 0; i < reg_list_size; i++) {
243 if (!reg_list[i]->valid)
244 reg_list[i]->type->get(reg_list[i]);
246 hex_string = reg_converter(hex_string,
248 (reg_list[i]->size) / 8);
254 struct threads *temp = linux_os->thread_list;
255 *hex_reg_list = calloc(1, 500 * sizeof(char));
256 hex_string = *hex_reg_list;
258 for (i = 0; i < 16; i++)
259 hex_string += sprintf(hex_string, "%02x", 0);
261 while ((temp != NULL) &&
262 (temp->threadid != target->rtos->current_threadid))
266 if (temp->context == NULL)
267 temp->context = cpu_context_read(target,
274 reg_converter(hex_string, &temp->context->R4, 4);
276 reg_converter(hex_string, &temp->context->R5, 4);
278 reg_converter(hex_string, &temp->context->R6, 4);
280 reg_converter(hex_string, &temp->context->R7, 4);
282 reg_converter(hex_string, &temp->context->R8, 4);
284 reg_converter(hex_string, &temp->context->R9, 4);
286 for (i = 0; i < 4; i++) /*R10 = 0x0 */
287 hex_string += sprintf(hex_string, "%02x", 0);
290 reg_converter(hex_string, &temp->context->FP, 4);
292 reg_converter(hex_string, &temp->context->IP, 4);
294 reg_converter(hex_string, &temp->context->SP, 4);
296 for (i = 0; i < 4; i++)
297 hex_string += sprintf(hex_string, "%02x", 0);
300 reg_converter(hex_string, &temp->context->PC, 4);
302 for (i = 0; i < 100; i++) /*100 */
303 hex_string += sprintf(hex_string, "%02x", 0);
305 uint32_t cpsr = 0x00000000;
306 reg_converter(hex_string, &cpsr, 4);
312 static int linux_os_detect(struct target *target)
314 LOG_INFO("should no be called");
318 static int linux_os_smp_init(struct target *target);
319 static int linux_os_clean(struct target *target);
321 static const char * const linux_symbol_list[] = {
326 static int linux_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[])
329 *symbol_list = (symbol_table_elem_t *)
330 calloc(ARRAY_SIZE(linux_symbol_list), sizeof(symbol_table_elem_t));
332 for (i = 0; i < ARRAY_SIZE(linux_symbol_list); i++)
333 (*symbol_list)[i].symbol_name = linux_symbol_list[i];
338 static char *linux_ps_command(struct target *target);
340 const struct rtos_type Linux_os = {
342 .detect_rtos = linux_os_detect,
343 .create = linux_os_create,
344 .smp_init = linux_os_smp_init,
345 .update_threads = linux_os_dummy_update,
346 .get_thread_reg_list = linux_os_thread_reg_list,
347 .get_symbol_list_to_lookup = linux_get_symbol_list_to_lookup,
348 .clean = linux_os_clean,
349 .ps_command = linux_ps_command,
352 static int linux_thread_packet(struct connection *connection, char const *packet,
354 static void linux_identify_current_threads(struct target *target);
357 int fill_task_pid(struct target *target, struct threads *t)
359 uint32_t pid_addr = t->base_addr + PID;
361 int retval = fill_buffer(target, pid_addr, buffer);
363 if (retval == ERROR_OK) {
364 uint32_t val = get_buffer(target, buffer);
367 LOG_ERROR("fill_task_pid: unable to read memory");
373 int fill_task(struct target *target, struct threads *t)
376 uint32_t pid_addr = t->base_addr + PID;
377 uint32_t mem_addr = t->base_addr + MEM;
378 uint32_t on_cpu = t->base_addr + ONCPU;
379 uint8_t *buffer = calloc(1, 4);
380 retval = fill_buffer(target, t->base_addr, buffer);
382 if (retval == ERROR_OK) {
383 uint32_t val = get_buffer(target, buffer);
386 LOG_ERROR("fill_task: unable to read memory");
388 retval = fill_buffer(target, pid_addr, buffer);
390 if (retval == ERROR_OK) {
391 uint32_t val = get_buffer(target, buffer);
394 LOG_ERROR("fill task: unable to read memory");
396 retval = fill_buffer(target, on_cpu, buffer);
398 if (retval == ERROR_OK) {
399 uint32_t val = get_buffer(target, buffer);
402 LOG_ERROR("fill task: unable to read memory");
404 retval = fill_buffer(target, mem_addr, buffer);
406 if (retval == ERROR_OK) {
407 uint32_t val = get_buffer(target, buffer);
410 uint32_t asid_addr = val + MM_CTX;
411 retval = fill_buffer(target, asid_addr, buffer);
413 if (retval == ERROR_OK) {
414 val = get_buffer(target, buffer);
418 ("fill task: unable to read memory -- ASID");
422 LOG_ERROR("fill task: unable to read memory");
429 int get_name(struct target *target, struct threads *t)
432 uint32_t full_name[4];
433 uint32_t comm = t->base_addr + COMM;
436 for (i = 0; i < 17; i++)
439 retval = linux_read_memory(target, comm, 4, 4, (uint8_t *) full_name);
441 if (retval != ERROR_OK) {
442 LOG_ERROR("get_name: unable to read memory\n");
446 uint32_t raw_name = target_buffer_get_u32(target,
449 t->name[3] = raw_name >> 24;
450 t->name[2] = raw_name >> 16;
451 t->name[1] = raw_name >> 8;
452 t->name[0] = raw_name;
454 target_buffer_get_u32(target, (const uint8_t *)&full_name[1]);
455 t->name[7] = raw_name >> 24;
456 t->name[6] = raw_name >> 16;
457 t->name[5] = raw_name >> 8;
458 t->name[4] = raw_name;
460 target_buffer_get_u32(target, (const uint8_t *)&full_name[2]);
461 t->name[11] = raw_name >> 24;
462 t->name[10] = raw_name >> 16;
463 t->name[9] = raw_name >> 8;
464 t->name[8] = raw_name;
466 target_buffer_get_u32(target, (const uint8_t *)&full_name[3]);
467 t->name[15] = raw_name >> 24;
468 t->name[14] = raw_name >> 16;
469 t->name[13] = raw_name >> 8;
470 t->name[12] = raw_name;
475 int get_current(struct target *target, int create)
477 struct target_list *head;
482 uint8_t *buffer = calloc(1, 4);
483 struct linux_os *linux_os = (struct linux_os *)
484 target->rtos->rtos_specific_params;
485 struct current_thread *ctt = linux_os->current_threads;
487 /* invalid current threads content */
488 while (ctt != NULL) {
490 ctt->TS = 0xdeadbeef;
494 while (head != (struct target_list *)NULL) {
495 struct reg **reg_list;
499 if (target_get_gdb_reg_list(head->target, ®_list,
500 ®_list_size, REG_CLASS_GENERAL) != ERROR_OK) {
502 return ERROR_TARGET_FAILURE;
505 if (!reg_list[13]->valid)
506 reg_list[13]->type->get(reg_list[13]);
508 buf = reg_list[13]->value;
509 val = get_buffer(target, buf);
510 ti_addr = (val & 0xffffe000);
511 uint32_t TS_addr = ti_addr + 0xc;
512 retval = fill_buffer(target, TS_addr, buffer);
514 if (retval == ERROR_OK) {
515 uint32_t TS = get_buffer(target, buffer);
516 uint32_t cpu, on_cpu = TS + ONCPU;
517 retval = fill_buffer(target, on_cpu, buffer);
519 if (retval == ERROR_OK) {
520 /*uint32_t cpu = get_buffer(target, buffer);*/
521 struct current_thread *ct =
522 linux_os->current_threads;
523 cpu = head->target->coreid;
525 while ((ct != NULL) && (ct->core_id != (int32_t) cpu))
528 if ((ct != NULL) && (ct->TS == 0xdeadbeef))
532 ("error in linux current thread update");
536 t = calloc(1, sizeof(struct threads));
537 t->base_addr = ct->TS;
538 fill_task(target, t);
541 insert_into_threadlist(target, t);
543 t->thread_info_addr = 0xdeadbeef;
544 ct->threadid = t->threadid;
545 linux_os->thread_count++;
549 /*LOG_INFO("Creation of current thread %s",t->name);*/
563 struct cpu_context *cpu_context_read(struct target *target, uint32_t base_addr,
564 uint32_t *thread_info_addr_old)
566 struct cpu_context *context = calloc(1, sizeof(struct cpu_context));
567 uint32_t preempt_count_addr = 0;
568 uint32_t registers[10];
569 uint8_t *buffer = calloc(1, 4);
570 uint32_t stack = base_addr + QAT;
571 uint32_t thread_info_addr = 0;
572 uint32_t thread_info_addr_update = 0;
573 int retval = ERROR_FAIL;
574 context->R4 = 0xdeadbeef;
575 context->R5 = 0xdeadbeef;
576 context->R6 = 0xdeadbeef;
577 context->R7 = 0xdeadbeef;
578 context->R8 = 0xdeadbeef;
579 context->R9 = 0xdeadbeef;
580 context->IP = 0xdeadbeef;
581 context->FP = 0xdeadbeef;
582 context->SP = 0xdeadbeef;
583 context->PC = 0xdeadbeef;
586 if (*thread_info_addr_old == 0xdeadbeef) {
587 retval = fill_buffer(target, stack, buffer);
589 if (retval == ERROR_OK)
590 thread_info_addr = get_buffer(target, buffer);
592 LOG_ERROR("cpu_context: unable to read memory");
594 thread_info_addr_update = thread_info_addr;
596 thread_info_addr = *thread_info_addr_old;
598 preempt_count_addr = thread_info_addr + PREEMPT;
599 retval = fill_buffer(target, preempt_count_addr, buffer);
601 if (retval == ERROR_OK)
602 context->preempt_count = get_buffer(target, buffer);
604 if (*thread_info_addr_old != 0xdeadbeef) {
606 ("cpu_context: cannot read at thread_info_addr");
608 if (*thread_info_addr_old < LINUX_USER_KERNEL_BORDER)
610 ("cpu_context : thread_info_addr in userspace!!!");
612 *thread_info_addr_old = 0xdeadbeef;
616 LOG_ERROR("cpu_context: unable to read memory");
619 thread_info_addr += CPU_CONT;
621 retval = linux_read_memory(target, thread_info_addr, 4, 10,
622 (uint8_t *) registers);
624 if (retval != ERROR_OK) {
626 LOG_ERROR("cpu_context: unable to read memory\n");
631 target_buffer_get_u32(target, (const uint8_t *)®isters[0]);
633 target_buffer_get_u32(target, (const uint8_t *)®isters[1]);
635 target_buffer_get_u32(target, (const uint8_t *)®isters[2]);
637 target_buffer_get_u32(target, (const uint8_t *)®isters[3]);
639 target_buffer_get_u32(target, (const uint8_t *)®isters[4]);
641 target_buffer_get_u32(target, (const uint8_t *)®isters[5]);
643 target_buffer_get_u32(target, (const uint8_t *)®isters[6]);
645 target_buffer_get_u32(target, (const uint8_t *)®isters[7]);
647 target_buffer_get_u32(target, (const uint8_t *)®isters[8]);
649 target_buffer_get_u32(target, (const uint8_t *)®isters[9]);
651 if (*thread_info_addr_old == 0xdeadbeef)
652 *thread_info_addr_old = thread_info_addr_update;
659 uint32_t next_task(struct target *target, struct threads *t)
661 uint8_t *buffer = calloc(1, 4);
662 uint32_t next_addr = t->base_addr + NEXT;
663 int retval = fill_buffer(target, next_addr, buffer);
665 if (retval == ERROR_OK) {
666 uint32_t val = get_buffer(target, buffer);
671 LOG_ERROR("next task: unable to read memory");
678 struct current_thread *add_current_thread(struct current_thread *currents,
679 struct current_thread *ct)
683 if (currents == NULL) {
687 struct current_thread *temp = currents;
689 while (temp->next != NULL)
697 struct threads *liste_del_task(struct threads *task_list, struct threads **t,
698 struct threads *prev)
700 LOG_INFO("del task %" PRId64, (*t)->threadid);
701 prev->next = (*t)->next;
703 if (prev == task_list)
706 /* free content of threads */
715 struct threads *liste_add_task(struct threads *task_list, struct threads *t,
716 struct threads **last)
721 if (task_list == NULL) {
725 struct threads *temp = task_list;
727 while (temp->next != NULL)
741 static int current_pid(struct linux_os *linux_os, uint32_t pid)
743 static int current_base_addr(struct linux_os *linux_os, uint32_t base_addr)
746 struct current_thread *ct = linux_os->current_threads;
749 while ((ct != NULL) && (ct->pid != pid))
751 while ((ct != NULL) && (ct->TS != base_addr))
755 if ((ct != NULL) && (ct->pid == pid))
757 if ((ct != NULL) && (ct->TS == base_addr))
764 int linux_get_tasks(struct target *target, int context)
768 struct linux_os *linux_os = (struct linux_os *)
769 target->rtos->rtos_specific_params;
770 linux_os->thread_list = NULL;
771 linux_os->thread_count = 0;
773 if (linux_os->init_task_addr == 0xdeadbeef) {
774 LOG_INFO("no init symbol\n");
778 int64_t start = timeval_ms();
780 struct threads *t = calloc(1, sizeof(struct threads));
781 struct threads *last = NULL;
782 t->base_addr = linux_os->init_task_addr;
783 /* retrieve the thread id , currently running in the different smp core */
784 get_current(target, 1);
786 while (((t->base_addr != linux_os->init_task_addr) &&
787 (t->base_addr != 0)) || (loop == 0)) {
789 fill_task(target, t);
790 retval = get_name(target, t);
792 if (loop > MAX_THREADS) {
794 LOG_INFO("more than %d threads !!", MAX_THREADS);
798 if (retval != ERROR_OK) {
803 /* check that this thread is not one the current threads already
807 if (!current_pid(linux_os, t->pid)) {
809 if (!current_base_addr(linux_os, t->base_addr)) {
811 t->threadid = linux_os->threadid_count;
813 linux_os->threadid_count++;
815 linux_os->thread_list =
816 liste_add_task(linux_os->thread_list, t, &last);
817 /* no interest to fill the context if it is a current thread. */
818 linux_os->thread_count++;
819 t->thread_info_addr = 0xdeadbeef;
823 cpu_context_read(target, t->base_addr,
824 &t->thread_info_addr);
826 /*LOG_INFO("thread %s is a current thread already created",t->name); */
830 uint32_t base_addr = next_task(target, t);
831 t = calloc(1, sizeof(struct threads));
832 t->base_addr = base_addr;
835 linux_os->threads_lookup = 1;
836 linux_os->threads_needs_update = 0;
837 linux_os->preupdtate_threadid_count = linux_os->threadid_count - 1;
838 /* check that all current threads have been identified */
840 LOG_INFO("complete time %" PRId64 ", thread mean %" PRId64 "\n",
841 (timeval_ms() - start),
842 (timeval_ms() - start) / linux_os->threadid_count);
844 LOG_INFO("threadid count %d", linux_os->threadid_count);
850 static int clean_threadlist(struct target *target)
852 struct linux_os *linux_os = (struct linux_os *)
853 target->rtos->rtos_specific_params;
854 struct threads *old, *temp = linux_os->thread_list;
856 while (temp != NULL) {
869 static int linux_os_clean(struct target *target)
871 struct linux_os *os_linux = (struct linux_os *)
872 target->rtos->rtos_specific_params;
873 clean_threadlist(target);
874 os_linux->init_task_addr = 0xdeadbeef;
875 os_linux->name = "linux";
876 os_linux->thread_list = NULL;
877 os_linux->thread_count = 0;
878 os_linux->nr_cpus = 0;
879 os_linux->threads_lookup = 0;
880 os_linux->threads_needs_update = 0;
881 os_linux->threadid_count = 1;
885 static int insert_into_threadlist(struct target *target, struct threads *t)
887 struct linux_os *linux_os = (struct linux_os *)
888 target->rtos->rtos_specific_params;
889 struct threads *temp = linux_os->thread_list;
890 t->threadid = linux_os->threadid_count;
891 linux_os->threadid_count++;
896 linux_os->thread_list = t;
898 while (temp->next != NULL)
908 static void linux_identify_current_threads(struct target *target)
910 struct linux_os *linux_os = (struct linux_os *)
911 target->rtos->rtos_specific_params;
912 struct threads *thread_list = linux_os->thread_list;
913 struct current_thread *ct = linux_os->current_threads;
914 struct threads *t = NULL;
916 while ((ct != NULL)) {
917 if (ct->threadid == -1) {
919 /* un-identified thread */
921 t = calloc(1, sizeof(struct threads));
922 t->base_addr = ct->TS;
925 if (fill_task_pid(target, t) != ERROR_OK) {
929 ("linux identify_current_threads: unable to read pid");
934 /* search in the list of threads if pid
936 while ((thread_list != NULL) && (found == 0)) {
938 if (thread_list->pid == t->pid) {
940 if (thread_list->base_addr == t->base_addr) {
946 thread_list = thread_list->next;
950 /* it is a new thread */
951 if (fill_task(target, t) != ERROR_OK)
955 insert_into_threadlist(target, t);
956 t->thread_info_addr = 0xdeadbeef;
960 ct->threadid = t->threadid;
964 linux_os->thread_count++;
967 LOG_INFO("current thread core %x identified %s",
968 ct->core_id, t->name);
970 LOG_INFO("current thread core %x, reused %s",
971 ct->core_id, t->name);
977 tmp.base_addr = ct->TS;
978 get_name(target, &tmp);
979 LOG_INFO("current thread core %x , already identified %s !!!",
980 ct->core_id, tmp.name);
990 LOG_ERROR("unable to read pid");
996 static int linux_task_update(struct target *target, int context)
998 struct linux_os *linux_os = (struct linux_os *)
999 target->rtos->rtos_specific_params;
1000 struct threads *thread_list = linux_os->thread_list;
1003 linux_os->thread_count = 0;
1005 /*thread_list = thread_list->next; skip init_task*/
1006 while (thread_list != NULL) {
1007 thread_list->status = 0; /*setting all tasks to dead state*/
1009 if (thread_list->context) {
1010 free(thread_list->context);
1011 thread_list->context = NULL;
1014 thread_list = thread_list->next;
1019 if (linux_os->init_task_addr == 0xdeadbeef) {
1020 LOG_INFO("no init symbol\n");
1023 int64_t start = timeval_ms();
1024 struct threads *t = calloc(1, sizeof(struct threads));
1025 uint32_t previous = 0xdeadbeef;
1026 t->base_addr = linux_os->init_task_addr;
1027 retval = get_current(target, 0);
1028 /*check that all current threads have been identified */
1029 linux_identify_current_threads(target);
1031 while (((t->base_addr != linux_os->init_task_addr) &&
1032 (t->base_addr != previous)) || (loop == 0)) {
1033 /* for avoiding any permanent loop for any reason possibly due to
1036 previous = t->base_addr;
1039 retval = fill_task_pid(target, t);
1042 if (retval != ERROR_OK) {
1047 thread_list = linux_os->thread_list;
1049 while (thread_list != NULL) {
1051 if (t->pid == thread_list->pid) {
1053 if (t->base_addr == thread_list->base_addr) {
1055 if (!thread_list->status) {
1057 if (t->base_addr != thread_list->base_addr)
1058 LOG_INFO("thread base_addr has changed !!");
1060 /* this is not a current thread */
1061 thread_list->base_addr = t->base_addr;
1062 thread_list->status = 1;
1064 /* we don 't update this field any more */
1066 /*thread_list->state = t->state;
1067 thread_list->oncpu = t->oncpu;
1068 thread_list->asid = t->asid;
1071 thread_list->context =
1072 cpu_context_read(target,
1078 /* it is a current thread no need to read context */
1081 linux_os->thread_count++;
1086 thread_list = thread_list->next;
1092 fill_task(target, t);
1093 get_name(target, t);
1094 retval = insert_into_threadlist(target, t);
1095 t->thread_info_addr = 0xdeadbeef;
1099 cpu_context_read(target, t->base_addr,
1100 &t->thread_info_addr);
1102 base_addr = next_task(target, t);
1103 t = calloc(1, sizeof(struct threads));
1104 t->base_addr = base_addr;
1105 linux_os->thread_count++;
1107 t->base_addr = next_task(target, t);
1110 LOG_INFO("update thread done %" PRId64 ", mean%" PRId64 "\n",
1111 (timeval_ms() - start), (timeval_ms() - start) / loop);
1113 linux_os->threads_needs_update = 0;
1117 int linux_gdb_thread_packet(struct target *target,
1118 struct connection *connection, char const *packet,
1122 struct linux_os *linux_os =
1123 (struct linux_os *)target->rtos->rtos_specific_params;
1125 if (linux_os->init_task_addr == 0xdeadbeef) {
1126 /* it has not been initialized */
1127 LOG_INFO("received thread request without init task address");
1128 gdb_put_packet(connection, "l", 1);
1132 retval = linux_get_tasks(target, 1);
1134 if (retval != ERROR_OK)
1135 return ERROR_TARGET_FAILURE;
1137 char *out_str = calloc(1, 350 * sizeof(int64_t));
1138 char *tmp_str = out_str;
1139 tmp_str += sprintf(tmp_str, "m");
1140 struct threads *temp = linux_os->thread_list;
1142 while (temp != NULL) {
1143 tmp_str += sprintf(tmp_str, "%016" PRIx64, temp->threadid);
1146 tmp_str += sprintf(tmp_str, ",");
1149 gdb_put_packet(connection, out_str, strlen(out_str));
1154 int linux_gdb_thread_update(struct target *target,
1155 struct connection *connection, char const *packet,
1159 struct linux_os *linux_os = (struct linux_os *)
1160 target->rtos->rtos_specific_params;
1161 struct threads *temp = linux_os->thread_list;
1163 while (temp != NULL) {
1164 if (temp->threadid == linux_os->preupdtate_threadid_count + 1) {
1165 /*LOG_INFO("FOUND");*/
1173 /*LOG_INFO("INTO GDB THREAD UPDATE FOUNDING START TASK");*/
1174 char *out_strr = calloc(1, 350 * sizeof(int64_t));
1175 char *tmp_strr = out_strr;
1176 tmp_strr += sprintf(tmp_strr, "m");
1177 /*LOG_INFO("CHAR MALLOC & M DONE");*/
1178 tmp_strr += sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1182 while (temp != NULL) {
1183 /*LOG_INFO("INTO GDB THREAD UPDATE WHILE");*/
1184 tmp_strr += sprintf(tmp_strr, ",");
1186 sprintf(tmp_strr, "%016" PRIx64, temp->threadid);
1191 gdb_put_packet(connection, out_strr, strlen(out_strr));
1192 linux_os->preupdtate_threadid_count =
1193 linux_os->threadid_count - 1;
1196 gdb_put_packet(connection, "l", 1);
1201 int linux_thread_extra_info(struct target *target,
1202 struct connection *connection, char const *packet,
1205 int64_t threadid = 0;
1206 struct linux_os *linux_os = (struct linux_os *)
1207 target->rtos->rtos_specific_params;
1208 sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
1209 /*LOG_INFO("lookup extra info for thread %" SCNx64, threadid);*/
1210 struct threads *temp = linux_os->thread_list;
1212 while (temp != NULL) {
1213 if (temp->threadid == threadid) {
1214 char *pid = " PID: ";
1215 char *pid_current = "*PID: ";
1216 char *name = "NAME: ";
1217 int str_size = strlen(pid) + strlen(name);
1218 char *tmp_str = calloc(1, str_size + 50);
1219 char *tmp_str_ptr = tmp_str;
1221 /* discriminate current task */
1222 if (temp->status == 3)
1223 tmp_str_ptr += sprintf(tmp_str_ptr, "%s",
1226 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", pid);
1229 sprintf(tmp_str_ptr, "%d", (int)temp->pid);
1230 tmp_str_ptr += sprintf(tmp_str_ptr, "%s", " | ");
1231 sprintf(tmp_str_ptr, "%s", name);
1232 sprintf(tmp_str_ptr, "%s", temp->name);
1233 char *hex_str = calloc(1, strlen(tmp_str) * 2 + 1);
1234 int pkt_len = hexify(hex_str, tmp_str, 0, strlen(tmp_str) * 2 + 1);
1235 gdb_put_packet(connection, hex_str, pkt_len);
1244 LOG_INFO("thread not found");
1248 int linux_gdb_T_packet(struct connection *connection,
1249 struct target *target, char const *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 const *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 const *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 (strncmp(packet, "qSymbol", 7) == 0) {
1400 if (rtos_qsymbol(connection, packet, packet_size) == 1) {
1401 linux_compute_virt2phys(target,
1408 } else if (strncmp(packet, "qfThreadInfo", 12) == 0) {
1409 if (linux_os->thread_list == NULL) {
1410 retval = linux_gdb_thread_packet(target,
1416 retval = linux_gdb_thread_update(target,
1422 } else if (strncmp(packet, "qsThreadInfo", 12) == 0) {
1423 gdb_put_packet(connection, "l", 1);
1425 } else if (strncmp(packet, "qThreadExtraInfo,", 17) == 0) {
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 = 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 "%" PRId32 "\t\t%" PRId32 "\t\t%" PRIx32 "\t\t%s\n",
1574 temp->pid, temp->oncpu,
1575 temp->asid, temp->name);
1579 "%" PRId32 "\t\t%" PRId32 "\t\t%" PRIx32 "\t\t%s\n",
1580 temp->pid, temp->oncpu,
1581 temp->asid, temp->name);
1591 display = calloc(40, 1);
1592 sprintf(display, "linux_ps_command failed\n");