mirror of
https://github.com/linux-msm/openocd.git
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da34e36cdb
The target nds32 and its companion adapter aice have not received
any real improvement since 2013.
It has been hard to keep them aligned during the evolution of
OpenOCD code, with no way for maintainers to really check if they
are still working.
No real documentation is present for them in OpenOCD.
The nds32 code triggers ~50 errors/warnings with scan-build.
The arch nds32 has been dropped from Linux kernel v5.18-rc1.
For all the reasons above, this code has been deprecated with
commit 2e5df83de7 ("nds32: deprecate it, together with aice
adapter driver") and tagged to be dropped before v0.13.0.
Let it r.i.p. in OpenOCD git history.
While there, drop from checkpatch list the camelcase symbols that
where only used in this code.
Change-Id: Ide52a217f2228e9da2f1cc5036c48f3536f26952
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7382
Tested-by: jenkins
545 lines
18 KiB
C
545 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/***************************************************************************
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* Copyright (C) 2011 by Broadcom Corporation *
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* Evan Hunter - ehunter@broadcom.com *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <helper/time_support.h>
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#include <jtag/jtag.h>
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#include "target/target.h"
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#include "target/target_type.h"
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#include "rtos.h"
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#include "helper/log.h"
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#include "helper/types.h"
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#include "rtos_standard_stackings.h"
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#include "target/armv7m.h"
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#include "target/cortex_m.h"
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#define FREERTOS_MAX_PRIORITIES 63
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/* FIXME: none of the _width parameters are actually observed properly!
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* you WILL need to edit more if you actually attempt to target a 8/16/64
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* bit target!
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*/
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struct freertos_params {
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const char *target_name;
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const unsigned char thread_count_width;
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const unsigned char pointer_width;
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const unsigned char list_next_offset;
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const unsigned char list_width;
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const unsigned char list_elem_next_offset;
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const unsigned char list_elem_content_offset;
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const unsigned char thread_stack_offset;
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const unsigned char thread_name_offset;
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const struct rtos_register_stacking *stacking_info_cm3;
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const struct rtos_register_stacking *stacking_info_cm4f;
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const struct rtos_register_stacking *stacking_info_cm4f_fpu;
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};
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static const struct freertos_params freertos_params_list[] = {
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{
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"cortex_m", /* target_name */
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4, /* thread_count_width; */
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4, /* pointer_width; */
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16, /* list_next_offset; */
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20, /* list_width; */
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8, /* list_elem_next_offset; */
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12, /* list_elem_content_offset */
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0, /* thread_stack_offset; */
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52, /* thread_name_offset; */
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&rtos_standard_cortex_m3_stacking, /* stacking_info */
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&rtos_standard_cortex_m4f_stacking,
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&rtos_standard_cortex_m4f_fpu_stacking,
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},
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{
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"hla_target", /* target_name */
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4, /* thread_count_width; */
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4, /* pointer_width; */
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16, /* list_next_offset; */
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20, /* list_width; */
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8, /* list_elem_next_offset; */
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12, /* list_elem_content_offset */
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0, /* thread_stack_offset; */
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52, /* thread_name_offset; */
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&rtos_standard_cortex_m3_stacking, /* stacking_info */
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&rtos_standard_cortex_m4f_stacking,
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&rtos_standard_cortex_m4f_fpu_stacking,
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},
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};
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static bool freertos_detect_rtos(struct target *target);
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static int freertos_create(struct target *target);
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static int freertos_update_threads(struct rtos *rtos);
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static int freertos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id,
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struct rtos_reg **reg_list, int *num_regs);
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static int freertos_get_symbol_list_to_lookup(struct symbol_table_elem *symbol_list[]);
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struct rtos_type freertos_rtos = {
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.name = "FreeRTOS",
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.detect_rtos = freertos_detect_rtos,
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.create = freertos_create,
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.update_threads = freertos_update_threads,
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.get_thread_reg_list = freertos_get_thread_reg_list,
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.get_symbol_list_to_lookup = freertos_get_symbol_list_to_lookup,
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};
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enum freertos_symbol_values {
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FREERTOS_VAL_PX_CURRENT_TCB = 0,
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FREERTOS_VAL_PX_READY_TASKS_LISTS = 1,
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FREERTOS_VAL_X_DELAYED_TASK_LIST1 = 2,
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FREERTOS_VAL_X_DELAYED_TASK_LIST2 = 3,
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FREERTOS_VAL_PX_DELAYED_TASK_LIST = 4,
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FREERTOS_VAL_PX_OVERFLOW_DELAYED_TASK_LIST = 5,
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FREERTOS_VAL_X_PENDING_READY_LIST = 6,
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FREERTOS_VAL_X_TASKS_WAITING_TERMINATION = 7,
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FREERTOS_VAL_X_SUSPENDED_TASK_LIST = 8,
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FREERTOS_VAL_UX_CURRENT_NUMBER_OF_TASKS = 9,
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FREERTOS_VAL_UX_TOP_USED_PRIORITY = 10,
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FREERTOS_VAL_X_SCHEDULER_RUNNING = 11,
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};
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struct symbols {
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const char *name;
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bool optional;
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};
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static const struct symbols freertos_symbol_list[] = {
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{ "pxCurrentTCB", false },
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{ "pxReadyTasksLists", false },
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{ "xDelayedTaskList1", false },
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{ "xDelayedTaskList2", false },
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{ "pxDelayedTaskList", false },
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{ "pxOverflowDelayedTaskList", false },
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{ "xPendingReadyList", false },
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{ "xTasksWaitingTermination", true }, /* Only if INCLUDE_vTaskDelete */
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{ "xSuspendedTaskList", true }, /* Only if INCLUDE_vTaskSuspend */
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{ "uxCurrentNumberOfTasks", false },
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{ "uxTopUsedPriority", true }, /* Unavailable since v7.5.3 */
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{ "xSchedulerRunning", false },
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{ NULL, false }
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};
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/* TODO: */
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/* this is not safe for little endian yet */
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/* may be problems reading if sizes are not 32 bit long integers. */
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/* test mallocs for failure */
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static int freertos_update_threads(struct rtos *rtos)
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{
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int retval;
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unsigned int tasks_found = 0;
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const struct freertos_params *param;
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if (!rtos->rtos_specific_params)
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return -1;
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param = (const struct freertos_params *) rtos->rtos_specific_params;
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if (!rtos->symbols) {
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LOG_ERROR("No symbols for FreeRTOS");
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return -3;
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}
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if (rtos->symbols[FREERTOS_VAL_UX_CURRENT_NUMBER_OF_TASKS].address == 0) {
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LOG_ERROR("Don't have the number of threads in FreeRTOS");
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return -2;
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}
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uint32_t thread_list_size = 0;
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retval = target_read_u32(rtos->target,
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rtos->symbols[FREERTOS_VAL_UX_CURRENT_NUMBER_OF_TASKS].address,
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&thread_list_size);
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LOG_DEBUG("FreeRTOS: Read uxCurrentNumberOfTasks at 0x%" PRIx64 ", value %" PRIu32,
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rtos->symbols[FREERTOS_VAL_UX_CURRENT_NUMBER_OF_TASKS].address,
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thread_list_size);
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if (retval != ERROR_OK) {
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LOG_ERROR("Could not read FreeRTOS thread count from target");
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return retval;
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}
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/* wipe out previous thread details if any */
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rtos_free_threadlist(rtos);
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/* read the current thread */
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uint32_t pointer_casts_are_bad;
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retval = target_read_u32(rtos->target,
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rtos->symbols[FREERTOS_VAL_PX_CURRENT_TCB].address,
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&pointer_casts_are_bad);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading current thread in FreeRTOS thread list");
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return retval;
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}
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rtos->current_thread = pointer_casts_are_bad;
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LOG_DEBUG("FreeRTOS: Read pxCurrentTCB at 0x%" PRIx64 ", value 0x%" PRIx64,
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rtos->symbols[FREERTOS_VAL_PX_CURRENT_TCB].address,
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rtos->current_thread);
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/* read scheduler running */
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uint32_t scheduler_running;
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retval = target_read_u32(rtos->target,
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rtos->symbols[FREERTOS_VAL_X_SCHEDULER_RUNNING].address,
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&scheduler_running);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading FreeRTOS scheduler state");
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return retval;
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}
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LOG_DEBUG("FreeRTOS: Read xSchedulerRunning at 0x%" PRIx64 ", value 0x%" PRIx32,
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rtos->symbols[FREERTOS_VAL_X_SCHEDULER_RUNNING].address,
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scheduler_running);
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if ((thread_list_size == 0) || (rtos->current_thread == 0) || (scheduler_running != 1)) {
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/* Either : No RTOS threads - there is always at least the current execution though */
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/* OR : No current thread - all threads suspended - show the current execution
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* of idling */
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char tmp_str[] = "Current Execution";
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thread_list_size++;
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tasks_found++;
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rtos->thread_details = malloc(
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sizeof(struct thread_detail) * thread_list_size);
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if (!rtos->thread_details) {
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LOG_ERROR("Error allocating memory for %d threads", thread_list_size);
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return ERROR_FAIL;
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}
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rtos->current_thread = 1;
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rtos->thread_details->threadid = rtos->current_thread;
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rtos->thread_details->exists = true;
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rtos->thread_details->extra_info_str = NULL;
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rtos->thread_details->thread_name_str = malloc(sizeof(tmp_str));
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strcpy(rtos->thread_details->thread_name_str, tmp_str);
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if (thread_list_size == 1) {
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rtos->thread_count = 1;
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return ERROR_OK;
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}
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} else {
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/* create space for new thread details */
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rtos->thread_details = malloc(
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sizeof(struct thread_detail) * thread_list_size);
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if (!rtos->thread_details) {
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LOG_ERROR("Error allocating memory for %d threads", thread_list_size);
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return ERROR_FAIL;
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}
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}
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/* Find out how many lists are needed to be read from pxReadyTasksLists, */
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if (rtos->symbols[FREERTOS_VAL_UX_TOP_USED_PRIORITY].address == 0) {
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LOG_ERROR("FreeRTOS: uxTopUsedPriority is not defined, consult the OpenOCD manual for a work-around");
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return ERROR_FAIL;
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}
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uint32_t top_used_priority = 0;
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retval = target_read_u32(rtos->target,
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rtos->symbols[FREERTOS_VAL_UX_TOP_USED_PRIORITY].address,
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&top_used_priority);
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if (retval != ERROR_OK)
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return retval;
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LOG_DEBUG("FreeRTOS: Read uxTopUsedPriority at 0x%" PRIx64 ", value %" PRIu32,
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rtos->symbols[FREERTOS_VAL_UX_TOP_USED_PRIORITY].address,
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top_used_priority);
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if (top_used_priority > FREERTOS_MAX_PRIORITIES) {
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LOG_ERROR("FreeRTOS top used priority is unreasonably big, not proceeding: %" PRIu32,
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top_used_priority);
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return ERROR_FAIL;
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}
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/* uxTopUsedPriority was defined as configMAX_PRIORITIES - 1
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* in old FreeRTOS versions (before V7.5.3)
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* Use contrib/rtos-helpers/FreeRTOS-openocd.c to get compatible symbol
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* in newer FreeRTOS versions.
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* Here we restore the original configMAX_PRIORITIES value */
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unsigned int config_max_priorities = top_used_priority + 1;
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symbol_address_t *list_of_lists =
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malloc(sizeof(symbol_address_t) * (config_max_priorities + 5));
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if (!list_of_lists) {
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LOG_ERROR("Error allocating memory for %u priorities", config_max_priorities);
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return ERROR_FAIL;
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}
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unsigned int num_lists;
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for (num_lists = 0; num_lists < config_max_priorities; num_lists++)
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list_of_lists[num_lists] = rtos->symbols[FREERTOS_VAL_PX_READY_TASKS_LISTS].address +
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num_lists * param->list_width;
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list_of_lists[num_lists++] = rtos->symbols[FREERTOS_VAL_X_DELAYED_TASK_LIST1].address;
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list_of_lists[num_lists++] = rtos->symbols[FREERTOS_VAL_X_DELAYED_TASK_LIST2].address;
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list_of_lists[num_lists++] = rtos->symbols[FREERTOS_VAL_X_PENDING_READY_LIST].address;
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list_of_lists[num_lists++] = rtos->symbols[FREERTOS_VAL_X_SUSPENDED_TASK_LIST].address;
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list_of_lists[num_lists++] = rtos->symbols[FREERTOS_VAL_X_TASKS_WAITING_TERMINATION].address;
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for (unsigned int i = 0; i < num_lists; i++) {
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if (list_of_lists[i] == 0)
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continue;
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/* Read the number of threads in this list */
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uint32_t list_thread_count = 0;
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retval = target_read_u32(rtos->target,
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list_of_lists[i],
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&list_thread_count);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading number of threads in FreeRTOS thread list");
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free(list_of_lists);
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return retval;
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}
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LOG_DEBUG("FreeRTOS: Read thread count for list %u at 0x%" PRIx64 ", value %" PRIu32,
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i, list_of_lists[i], list_thread_count);
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if (list_thread_count == 0)
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continue;
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/* Read the location of first list item */
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uint32_t prev_list_elem_ptr = -1;
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uint32_t list_elem_ptr = 0;
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retval = target_read_u32(rtos->target,
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list_of_lists[i] + param->list_next_offset,
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&list_elem_ptr);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
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free(list_of_lists);
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return retval;
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}
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LOG_DEBUG("FreeRTOS: Read first item for list %u at 0x%" PRIx64 ", value 0x%" PRIx32,
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i, list_of_lists[i] + param->list_next_offset, list_elem_ptr);
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while ((list_thread_count > 0) && (list_elem_ptr != 0) &&
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(list_elem_ptr != prev_list_elem_ptr) &&
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(tasks_found < thread_list_size)) {
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/* Get the location of the thread structure. */
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rtos->thread_details[tasks_found].threadid = 0;
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retval = target_read_u32(rtos->target,
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list_elem_ptr + param->list_elem_content_offset,
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&pointer_casts_are_bad);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading thread list item object in FreeRTOS thread list");
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free(list_of_lists);
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return retval;
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}
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rtos->thread_details[tasks_found].threadid = pointer_casts_are_bad;
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LOG_DEBUG("FreeRTOS: Read Thread ID at 0x%" PRIx32 ", value 0x%" PRIx64,
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list_elem_ptr + param->list_elem_content_offset,
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rtos->thread_details[tasks_found].threadid);
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/* get thread name */
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#define FREERTOS_THREAD_NAME_STR_SIZE (200)
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char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
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/* Read the thread name */
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retval = target_read_buffer(rtos->target,
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rtos->thread_details[tasks_found].threadid + param->thread_name_offset,
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FREERTOS_THREAD_NAME_STR_SIZE,
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(uint8_t *)&tmp_str);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
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free(list_of_lists);
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return retval;
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}
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tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
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LOG_DEBUG("FreeRTOS: Read Thread Name at 0x%" PRIx64 ", value '%s'",
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rtos->thread_details[tasks_found].threadid + param->thread_name_offset,
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tmp_str);
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if (tmp_str[0] == '\x00')
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strcpy(tmp_str, "No Name");
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rtos->thread_details[tasks_found].thread_name_str =
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malloc(strlen(tmp_str)+1);
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strcpy(rtos->thread_details[tasks_found].thread_name_str, tmp_str);
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rtos->thread_details[tasks_found].exists = true;
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if (rtos->thread_details[tasks_found].threadid == rtos->current_thread) {
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char running_str[] = "State: Running";
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rtos->thread_details[tasks_found].extra_info_str = malloc(
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sizeof(running_str));
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strcpy(rtos->thread_details[tasks_found].extra_info_str,
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running_str);
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} else
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rtos->thread_details[tasks_found].extra_info_str = NULL;
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tasks_found++;
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list_thread_count--;
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prev_list_elem_ptr = list_elem_ptr;
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list_elem_ptr = 0;
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retval = target_read_u32(rtos->target,
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prev_list_elem_ptr + param->list_elem_next_offset,
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&list_elem_ptr);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading next thread item location in FreeRTOS thread list");
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free(list_of_lists);
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return retval;
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}
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LOG_DEBUG("FreeRTOS: Read next thread location at 0x%" PRIx32 ", value 0x%" PRIx32,
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prev_list_elem_ptr + param->list_elem_next_offset,
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list_elem_ptr);
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}
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}
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free(list_of_lists);
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rtos->thread_count = tasks_found;
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return 0;
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}
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static int freertos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id,
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struct rtos_reg **reg_list, int *num_regs)
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{
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int retval;
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const struct freertos_params *param;
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int64_t stack_ptr = 0;
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if (!rtos)
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return -1;
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if (thread_id == 0)
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return -2;
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if (!rtos->rtos_specific_params)
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return -1;
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param = (const struct freertos_params *) rtos->rtos_specific_params;
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/* Read the stack pointer */
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uint32_t pointer_casts_are_bad;
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retval = target_read_u32(rtos->target,
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thread_id + param->thread_stack_offset,
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&pointer_casts_are_bad);
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if (retval != ERROR_OK) {
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LOG_ERROR("Error reading stack frame from FreeRTOS thread");
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return retval;
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}
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stack_ptr = pointer_casts_are_bad;
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LOG_DEBUG("FreeRTOS: Read stack pointer at 0x%" PRIx64 ", value 0x%" PRIx64,
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thread_id + param->thread_stack_offset,
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stack_ptr);
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/* Check for armv7m with *enabled* FPU, i.e. a Cortex-M4F */
|
|
int cm4_fpu_enabled = 0;
|
|
struct armv7m_common *armv7m_target = target_to_armv7m(rtos->target);
|
|
if (is_armv7m(armv7m_target)) {
|
|
if ((armv7m_target->fp_feature == FPV4_SP) || (armv7m_target->fp_feature == FPV5_SP) ||
|
|
(armv7m_target->fp_feature == FPV5_DP)) {
|
|
/* Found ARM v7m target which includes a FPU */
|
|
uint32_t cpacr;
|
|
|
|
retval = target_read_u32(rtos->target, FPU_CPACR, &cpacr);
|
|
if (retval != ERROR_OK) {
|
|
LOG_ERROR("Could not read CPACR register to check FPU state");
|
|
return -1;
|
|
}
|
|
|
|
/* Check if CP10 and CP11 are set to full access. */
|
|
if (cpacr & 0x00F00000) {
|
|
/* Found target with enabled FPU */
|
|
cm4_fpu_enabled = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cm4_fpu_enabled == 1) {
|
|
/* Read the LR to decide between stacking with or without FPU */
|
|
uint32_t lr_svc = 0;
|
|
retval = target_read_u32(rtos->target,
|
|
stack_ptr + 0x20,
|
|
&lr_svc);
|
|
if (retval != ERROR_OK) {
|
|
LOG_OUTPUT("Error reading stack frame from FreeRTOS thread");
|
|
return retval;
|
|
}
|
|
if ((lr_svc & 0x10) == 0)
|
|
return rtos_generic_stack_read(rtos->target, param->stacking_info_cm4f_fpu, stack_ptr, reg_list, num_regs);
|
|
else
|
|
return rtos_generic_stack_read(rtos->target, param->stacking_info_cm4f, stack_ptr, reg_list, num_regs);
|
|
} else
|
|
return rtos_generic_stack_read(rtos->target, param->stacking_info_cm3, stack_ptr, reg_list, num_regs);
|
|
}
|
|
|
|
static int freertos_get_symbol_list_to_lookup(struct symbol_table_elem *symbol_list[])
|
|
{
|
|
unsigned int i;
|
|
*symbol_list = calloc(
|
|
ARRAY_SIZE(freertos_symbol_list), sizeof(struct symbol_table_elem));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(freertos_symbol_list); i++) {
|
|
(*symbol_list)[i].symbol_name = freertos_symbol_list[i].name;
|
|
(*symbol_list)[i].optional = freertos_symbol_list[i].optional;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
|
|
static int freertos_set_current_thread(struct rtos *rtos, threadid_t thread_id)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int freertos_get_thread_ascii_info(struct rtos *rtos, threadid_t thread_id, char **info)
|
|
{
|
|
int retval;
|
|
const struct freertos_params *param;
|
|
|
|
if (!rtos)
|
|
return -1;
|
|
|
|
if (thread_id == 0)
|
|
return -2;
|
|
|
|
if (!rtos->rtos_specific_params)
|
|
return -3;
|
|
|
|
param = (const struct freertos_params *) rtos->rtos_specific_params;
|
|
|
|
#define FREERTOS_THREAD_NAME_STR_SIZE (200)
|
|
char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
|
|
|
|
/* Read the thread name */
|
|
retval = target_read_buffer(rtos->target,
|
|
thread_id + param->thread_name_offset,
|
|
FREERTOS_THREAD_NAME_STR_SIZE,
|
|
(uint8_t *)&tmp_str);
|
|
if (retval != ERROR_OK) {
|
|
LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
|
|
return retval;
|
|
}
|
|
tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
|
|
|
|
if (tmp_str[0] == '\x00')
|
|
strcpy(tmp_str, "No Name");
|
|
|
|
*info = malloc(strlen(tmp_str)+1);
|
|
strcpy(*info, tmp_str);
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
static bool freertos_detect_rtos(struct target *target)
|
|
{
|
|
if ((target->rtos->symbols) &&
|
|
(target->rtos->symbols[FREERTOS_VAL_PX_READY_TASKS_LISTS].address != 0)) {
|
|
/* looks like FreeRTOS */
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static int freertos_create(struct target *target)
|
|
{
|
|
for (unsigned int i = 0; i < ARRAY_SIZE(freertos_params_list); i++)
|
|
if (strcmp(freertos_params_list[i].target_name, target->type->name) == 0) {
|
|
target->rtos->rtos_specific_params = (void *)&freertos_params_list[i];
|
|
return 0;
|
|
}
|
|
|
|
LOG_ERROR("Could not find target in FreeRTOS compatibility list");
|
|
return -1;
|
|
}
|