--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2017 by Intel Corporation
+ * Leandro Pereira <leandro.pereira@intel.com>
+ * Daniel Glöckner <dg@emlix.com>*
+ * Copyright (C) 2021 by Synopsys, Inc.
+ * Evgeniy Didin <didin@synopsys.com>
+ * *
+ * SPDX-License-Identifier: GPL-2.0-or-later *
+ ***************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <helper/time_support.h>
+#include <jtag/jtag.h>
+
+#include "helper/log.h"
+#include "helper/types.h"
+#include "rtos.h"
+#include "rtos_standard_stackings.h"
+#include "target/target.h"
+#include "target/target_type.h"
+#include "target/armv7m.h"
+#include "target/arc.h"
+
+#define UNIMPLEMENTED 0xFFFFFFFFU
+
+/* ARC specific defines */
+#define ARC_AUX_SEC_BUILD_REG 0xdb
+#define ARC_REG_NUM 38
+
+/* ARM specific defines */
+#define ARM_XPSR_OFFSET 28
+
+struct zephyr_thread {
+ uint32_t ptr, next_ptr;
+ uint32_t entry;
+ uint32_t stack_pointer;
+ uint8_t state;
+ uint8_t user_options;
+ int8_t prio;
+ char name[64];
+};
+
+enum zephyr_offsets {
+ OFFSET_VERSION,
+ OFFSET_K_CURR_THREAD,
+ OFFSET_K_THREADS,
+ OFFSET_T_ENTRY,
+ OFFSET_T_NEXT_THREAD,
+ OFFSET_T_STATE,
+ OFFSET_T_USER_OPTIONS,
+ OFFSET_T_PRIO,
+ OFFSET_T_STACK_POINTER,
+ OFFSET_T_NAME,
+ OFFSET_T_ARCH,
+ OFFSET_T_PREEMPT_FLOAT,
+ OFFSET_T_COOP_FLOAT,
+ OFFSET_MAX
+};
+
+struct zephyr_params {
+ const char *target_name;
+ uint8_t size_width;
+ uint8_t pointer_width;
+ uint32_t num_offsets;
+ uint32_t offsets[OFFSET_MAX];
+ const struct rtos_register_stacking *callee_saved_stacking;
+ const struct rtos_register_stacking *cpu_saved_nofp_stacking;
+ const struct rtos_register_stacking *cpu_saved_fp_stacking;
+ int (*get_cpu_state)(struct rtos *rtos, target_addr_t *addr,
+ struct zephyr_params *params,
+ struct rtos_reg *callee_saved_reg_list,
+ struct rtos_reg **reg_list, int *num_regs);
+};
+
+static const struct stack_register_offset arm_callee_saved[] = {
+ { ARMV7M_R13, 32, 32 },
+ { ARMV7M_R4, 0, 32 },
+ { ARMV7M_R5, 4, 32 },
+ { ARMV7M_R6, 8, 32 },
+ { ARMV7M_R7, 12, 32 },
+ { ARMV7M_R8, 16, 32 },
+ { ARMV7M_R9, 20, 32 },
+ { ARMV7M_R10, 24, 32 },
+ { ARMV7M_R11, 28, 32 },
+};
+
+static const struct stack_register_offset arc_callee_saved[] = {
+ { ARC_R13, 0, 32 },
+ { ARC_R14, 4, 32 },
+ { ARC_R15, 8, 32 },
+ { ARC_R16, 12, 32 },
+ { ARC_R17, 16, 32 },
+ { ARC_R18, 20, 32 },
+ { ARC_R19, 24, 32 },
+ { ARC_R20, 28, 32 },
+ { ARC_R21, 32, 32 },
+ { ARC_R22, 36, 32 },
+ { ARC_R23, 40, 32 },
+ { ARC_R24, 44, 32 },
+ { ARC_R25, 48, 32 },
+ { ARC_GP, 52, 32 },
+ { ARC_FP, 56, 32 },
+ { ARC_R30, 60, 32 }
+};
+static const struct rtos_register_stacking arm_callee_saved_stacking = {
+ .stack_registers_size = 36,
+ .stack_growth_direction = -1,
+ .num_output_registers = ARRAY_SIZE(arm_callee_saved),
+ .register_offsets = arm_callee_saved,
+};
+
+static const struct rtos_register_stacking arc_callee_saved_stacking = {
+ .stack_registers_size = 64,
+ .stack_growth_direction = -1,
+ .num_output_registers = ARRAY_SIZE(arc_callee_saved),
+ .register_offsets = arc_callee_saved,
+};
+
+static const struct stack_register_offset arm_cpu_saved[] = {
+ { ARMV7M_R0, 0, 32 },
+ { ARMV7M_R1, 4, 32 },
+ { ARMV7M_R2, 8, 32 },
+ { ARMV7M_R3, 12, 32 },
+ { ARMV7M_R4, -1, 32 },
+ { ARMV7M_R5, -1, 32 },
+ { ARMV7M_R6, -1, 32 },
+ { ARMV7M_R7, -1, 32 },
+ { ARMV7M_R8, -1, 32 },
+ { ARMV7M_R9, -1, 32 },
+ { ARMV7M_R10, -1, 32 },
+ { ARMV7M_R11, -1, 32 },
+ { ARMV7M_R12, 16, 32 },
+ { ARMV7M_R13, -2, 32 },
+ { ARMV7M_R14, 20, 32 },
+ { ARMV7M_PC, 24, 32 },
+ { ARMV7M_xPSR, 28, 32 },
+};
+
+static struct stack_register_offset arc_cpu_saved[] = {
+ { ARC_R0, -1, 32 },
+ { ARC_R1, -1, 32 },
+ { ARC_R2, -1, 32 },
+ { ARC_R3, -1, 32 },
+ { ARC_R4, -1, 32 },
+ { ARC_R5, -1, 32 },
+ { ARC_R6, -1, 32 },
+ { ARC_R7, -1, 32 },
+ { ARC_R8, -1, 32 },
+ { ARC_R9, -1, 32 },
+ { ARC_R10, -1, 32 },
+ { ARC_R11, -1, 32 },
+ { ARC_R12, -1, 32 },
+ { ARC_R13, -1, 32 },
+ { ARC_R14, -1, 32 },
+ { ARC_R15, -1, 32 },
+ { ARC_R16, -1, 32 },
+ { ARC_R17, -1, 32 },
+ { ARC_R18, -1, 32 },
+ { ARC_R19, -1, 32 },
+ { ARC_R20, -1, 32 },
+ { ARC_R21, -1, 32 },
+ { ARC_R22, -1, 32 },
+ { ARC_R23, -1, 32 },
+ { ARC_R24, -1, 32 },
+ { ARC_R25, -1, 32 },
+ { ARC_GP, -1, 32 },
+ { ARC_FP, -1, 32 },
+ { ARC_SP, -1, 32 },
+ { ARC_ILINK, -1, 32 },
+ { ARC_R30, -1, 32 },
+ { ARC_BLINK, 0, 32 },
+ { ARC_LP_COUNT, -1, 32 },
+ { ARC_PCL, -1, 32 },
+ { ARC_PC, -1, 32 },
+ { ARC_LP_START, -1, 32 },
+ { ARC_LP_END, -1, 32 },
+ { ARC_STATUS32, 4, 32 }
+};
+
+
+enum zephyr_symbol_values {
+ ZEPHYR_VAL__KERNEL,
+ ZEPHYR_VAL__KERNEL_OPENOCD_OFFSETS,
+ ZEPHYR_VAL__KERNEL_OPENOCD_SIZE_T_SIZE,
+ ZEPHYR_VAL__KERNEL_OPENOCD_NUM_OFFSETS,
+ ZEPHYR_VAL_COUNT
+};
+
+static int64_t zephyr_cortex_m_stack_align(struct target *target,
+ const uint8_t *stack_data,
+ const struct rtos_register_stacking *stacking, int64_t stack_ptr)
+{
+ return rtos_Cortex_M_stack_align(target, stack_data, stacking,
+ stack_ptr, ARM_XPSR_OFFSET);
+}
+
+static const struct rtos_register_stacking arm_cpu_saved_nofp_stacking = {
+ .stack_registers_size = 32,
+ .stack_growth_direction = -1,
+ .num_output_registers = ARRAY_SIZE(arm_cpu_saved),
+ .calculate_process_stack = zephyr_cortex_m_stack_align,
+ .register_offsets = arm_cpu_saved,
+};
+
+static const struct rtos_register_stacking arm_cpu_saved_fp_stacking = {
+ .stack_registers_size = 32 + 18 * 4,
+ .stack_growth_direction = -1,
+ .num_output_registers = ARRAY_SIZE(arm_cpu_saved),
+ .calculate_process_stack = zephyr_cortex_m_stack_align,
+ .register_offsets = arm_cpu_saved,
+};
+
+/* stack_registers_size is 8 because besides caller registers
+ * there are only blink and Status32 registers on stack left */
+static struct rtos_register_stacking arc_cpu_saved_stacking = {
+ .stack_registers_size = 8,
+ .stack_growth_direction = -1,
+ .num_output_registers = ARRAY_SIZE(arc_cpu_saved),
+ .register_offsets = arc_cpu_saved,
+};
+
+/* ARCv2 specific implementation */
+static int zephyr_get_arc_state(struct rtos *rtos, target_addr_t *addr,
+ struct zephyr_params *params,
+ struct rtos_reg *callee_saved_reg_list,
+ struct rtos_reg **reg_list, int *num_regs)
+{
+
+ uint32_t real_stack_addr;
+ int retval = 0;
+ int num_callee_saved_regs;
+ const struct rtos_register_stacking *stacking;
+
+ /* Getting real stack address from Kernel thread struct */
+ retval = target_read_u32(rtos->target, *addr, &real_stack_addr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* Getting callee registers */
+ retval = rtos_generic_stack_read(rtos->target,
+ params->callee_saved_stacking,
+ real_stack_addr, &callee_saved_reg_list,
+ &num_callee_saved_regs);
+ if (retval != ERROR_OK)
+ return retval;
+
+ stacking = params->cpu_saved_nofp_stacking;
+
+ /* Getting blink and status32 registers */
+ retval = rtos_generic_stack_read(rtos->target, stacking,
+ real_stack_addr + num_callee_saved_regs * 4,
+ reg_list, num_regs);
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (int i = 0; i < num_callee_saved_regs; i++)
+ buf_cpy(callee_saved_reg_list[i].value,
+ (*reg_list)[callee_saved_reg_list[i].number].value,
+ callee_saved_reg_list[i].size);
+
+ /* The blink, sp, pc offsets in arc_cpu_saved structure may be changed,
+ * but the registers number shall not. So the next code searches the
+ * offsetst of these registers in arc_cpu_saved structure. */
+ unsigned short blink_offset = 0, pc_offset = 0, sp_offset = 0;
+ for (size_t i = 0; i < ARRAY_SIZE(arc_cpu_saved); i++) {
+ if (arc_cpu_saved[i].number == ARC_BLINK)
+ blink_offset = i;
+ if (arc_cpu_saved[i].number == ARC_SP)
+ sp_offset = i;
+ if (arc_cpu_saved[i].number == ARC_PC)
+ pc_offset = i;
+ }
+
+ if (blink_offset == 0 || sp_offset == 0 || pc_offset == 0) {
+ LOG_ERROR("Basic registers offsets are missing, check <arc_cpu_saved> struct");
+ return ERROR_FAIL;
+ }
+
+ /* Put blink value into PC */
+ buf_cpy((*reg_list)[blink_offset].value,
+ (*reg_list)[pc_offset].value, sizeof((*reg_list)[blink_offset].value));
+
+ /* Put address after callee/caller in SP. */
+ int64_t stack_top;
+
+ stack_top = real_stack_addr + num_callee_saved_regs * 4
+ + arc_cpu_saved_stacking.stack_registers_size;
+ buf_cpy(&stack_top, (*reg_list)[sp_offset].value, sizeof(stack_top));
+
+ return retval;
+}
+
+/* ARM Cortex-M-specific implementation */
+static int zephyr_get_arm_state(struct rtos *rtos, target_addr_t *addr,
+ struct zephyr_params *params,
+ struct rtos_reg *callee_saved_reg_list,
+ struct rtos_reg **reg_list, int *num_regs)
+{
+
+ int retval = 0;
+ int num_callee_saved_regs;
+ const struct rtos_register_stacking *stacking;
+
+ retval = rtos_generic_stack_read(rtos->target,
+ params->callee_saved_stacking,
+ *addr, &callee_saved_reg_list,
+ &num_callee_saved_regs);
+ if (retval != ERROR_OK)
+ return retval;
+
+ *addr = target_buffer_get_u32(rtos->target,
+ callee_saved_reg_list[0].value);
+
+ if (params->offsets[OFFSET_T_PREEMPT_FLOAT] != UNIMPLEMENTED)
+ stacking = params->cpu_saved_fp_stacking;
+ else
+ stacking = params->cpu_saved_nofp_stacking;
+
+ retval = rtos_generic_stack_read(rtos->target, stacking, *addr, reg_list,
+ num_regs);
+ if (retval != ERROR_OK)
+ return retval;
+
+ for (int i = 1; i < num_callee_saved_regs; i++)
+ buf_cpy(callee_saved_reg_list[i].value,
+ (*reg_list)[callee_saved_reg_list[i].number].value,
+ callee_saved_reg_list[i].size);
+ return 0;
+}
+
+static struct zephyr_params zephyr_params_list[] = {
+ {
+ .target_name = "cortex_m",
+ .pointer_width = 4,
+ .callee_saved_stacking = &arm_callee_saved_stacking,
+ .cpu_saved_nofp_stacking = &arm_cpu_saved_nofp_stacking,
+ .cpu_saved_fp_stacking = &arm_cpu_saved_fp_stacking,
+ .get_cpu_state = &zephyr_get_arm_state,
+ },
+ {
+ .target_name = "hla_target",
+ .pointer_width = 4,
+ .callee_saved_stacking = &arm_callee_saved_stacking,
+ .cpu_saved_nofp_stacking = &arm_cpu_saved_nofp_stacking,
+ .cpu_saved_fp_stacking = &arm_cpu_saved_fp_stacking,
+ .get_cpu_state = &zephyr_get_arm_state,
+
+ },
+ {
+ .target_name = "arcv2",
+ .pointer_width = 4,
+ .callee_saved_stacking = &arc_callee_saved_stacking,
+ .cpu_saved_nofp_stacking = &arc_cpu_saved_stacking,
+ .get_cpu_state = &zephyr_get_arc_state,
+ },
+ {
+ .target_name = NULL
+ }
+};
+
+static const struct symbol_table_elem zephyr_symbol_list[] = {
+ {
+ .symbol_name = "_kernel",
+ .optional = false
+ },
+ {
+ .symbol_name = "_kernel_openocd_offsets",
+ .optional = false
+ },
+ {
+ .symbol_name = "_kernel_openocd_size_t_size",
+ .optional = false
+ },
+ {
+ .symbol_name = "_kernel_openocd_num_offsets",
+ .optional = true
+ },
+ {
+ .symbol_name = NULL
+ }
+};
+
+static bool zephyr_detect_rtos(struct target *target)
+{
+ if (target->rtos->symbols == NULL) {
+ LOG_INFO("Zephyr: no symbols while detecting RTOS");
+ return false;
+ }
+
+ for (enum zephyr_symbol_values symbol = ZEPHYR_VAL__KERNEL;
+ symbol != ZEPHYR_VAL_COUNT; symbol++) {
+ LOG_INFO("Zephyr: does it have symbol %d (%s)?", symbol,
+ target->rtos->symbols[symbol].optional ? "optional" : "mandatory");
+
+ if (target->rtos->symbols[symbol].optional)
+ continue;
+ if (target->rtos->symbols[symbol].address == 0)
+ return false;
+ }
+
+ LOG_INFO("Zephyr: all mandatory symbols found");
+
+ return true;
+}
+
+static int zephyr_create(struct target *target)
+{
+ const char *name;
+
+ name = target_type_name(target);
+
+ LOG_INFO("Zephyr: looking for target: %s", name);
+
+ /* ARC specific, check if EM target has security subsystem
+ * In case of ARC_HAS_SECURE zephyr option enabled
+ * the thread stack contains blink,sec_stat,status32 register
+ * values. If ARC_HAS_SECURE is disabled, only blink and status32
+ * register values are saved on stack. */
+ if (!strcmp(name, "arcv2")) {
+ uint32_t value;
+ struct arc_common *arc = target_to_arc(target);
+ /* Reading SEC_BUILD bcr */
+ CHECK_RETVAL(arc_jtag_read_aux_reg_one(&arc->jtag_info, ARC_AUX_SEC_BUILD_REG, &value));
+ if (value != 0) {
+ LOG_DEBUG("ARC EM board has security subsystem, changing offsets");
+ arc_cpu_saved[ARC_REG_NUM - 1].offset = 8;
+ /* After reading callee registers in stack
+ * now blink,sec_stat,status32 registers
+ * are located. */
+ arc_cpu_saved_stacking.stack_registers_size = 12;
+ }
+ }
+
+ for (struct zephyr_params *p = zephyr_params_list; p->target_name; p++) {
+ if (!strcmp(p->target_name, name)) {
+ LOG_INFO("Zephyr: target known, params at %p", p);
+ target->rtos->rtos_specific_params = p;
+ return ERROR_OK;
+ }
+ }
+
+ LOG_ERROR("Could not find target in Zephyr compatibility list");
+ return ERROR_FAIL;
+}
+
+struct zephyr_array {
+ void *ptr;
+ size_t elements;
+};
+
+static void zephyr_array_init(struct zephyr_array *array)
+{
+ array->ptr = NULL;
+ array->elements = 0;
+}
+
+static void zephyr_array_free(struct zephyr_array *array)
+{
+ free(array->ptr);
+ zephyr_array_init(array);
+}
+
+static void *zephyr_array_append(struct zephyr_array *array, size_t size)
+{
+ if (!(array->elements % 16)) {
+ void *ptr = realloc(array->ptr, (array->elements + 16) * size);
+
+ if (!ptr) {
+ LOG_ERROR("Out of memory");
+ return NULL;
+ }
+
+ array->ptr = ptr;
+ }
+
+ return (unsigned char *)array->ptr + (array->elements++) * size;
+}
+
+static void *zephyr_array_detach_ptr(struct zephyr_array *array)
+{
+ void *ptr = array->ptr;
+
+ zephyr_array_init(array);
+
+ return ptr;
+}
+
+static uint32_t zephyr_kptr(const struct rtos *rtos, enum zephyr_offsets off)
+{
+ const struct zephyr_params *params = rtos->rtos_specific_params;
+
+ return rtos->symbols[ZEPHYR_VAL__KERNEL].address + params->offsets[off];
+}
+
+static int zephyr_fetch_thread(const struct rtos *rtos,
+ struct zephyr_thread *thread, uint32_t ptr)
+{
+ const struct zephyr_params *param = rtos->rtos_specific_params;
+ int retval;
+
+ thread->ptr = ptr;
+
+ retval = target_read_u32(rtos->target, ptr + param->offsets[OFFSET_T_ENTRY],
+ &thread->entry);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_u32(rtos->target,
+ ptr + param->offsets[OFFSET_T_NEXT_THREAD],
+ &thread->next_ptr);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_u32(rtos->target,
+ ptr + param->offsets[OFFSET_T_STACK_POINTER],
+ &thread->stack_pointer);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_u8(rtos->target, ptr + param->offsets[OFFSET_T_STATE],
+ &thread->state);
+ if (retval != ERROR_OK)
+ return retval;
+
+ retval = target_read_u8(rtos->target,
+ ptr + param->offsets[OFFSET_T_USER_OPTIONS],
+ &thread->user_options);
+ if (retval != ERROR_OK)
+ return retval;
+
+ uint8_t prio;
+ retval = target_read_u8(rtos->target,
+ ptr + param->offsets[OFFSET_T_PRIO], &prio);
+ if (retval != ERROR_OK)
+ return retval;
+ thread->prio = prio;
+
+ thread->name[0] = '\0';
+ if (param->offsets[OFFSET_T_NAME] != UNIMPLEMENTED) {
+ retval = target_read_buffer(rtos->target,
+ ptr + param->offsets[OFFSET_T_NAME],
+ sizeof(thread->name) - 1, (uint8_t *)thread->name);
+ if (retval != ERROR_OK)
+ return retval;
+
+ thread->name[sizeof(thread->name) - 1] = '\0';
+ }
+
+ LOG_DEBUG("Fetched thread%" PRIx32 ": {entry@0x%" PRIx32
+ ", state=%" PRIu8 ", useropts=%" PRIu8 ", prio=%" PRId8 "}",
+ ptr, thread->entry, thread->state, thread->user_options, thread->prio);
+
+ return ERROR_OK;
+}
+
+static int zephyr_fetch_thread_list(struct rtos *rtos, uint32_t current_thread)
+{
+ struct zephyr_array thread_array;
+ struct zephyr_thread thread;
+ struct thread_detail *td;
+ int64_t curr_id = -1;
+ uint32_t curr;
+ int retval;
+
+ retval = target_read_u32(rtos->target, zephyr_kptr(rtos, OFFSET_K_THREADS),
+ &curr);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Could not fetch current thread pointer");
+ return retval;
+ }
+
+ zephyr_array_init(&thread_array);
+
+ for (; curr; curr = thread.next_ptr) {
+ retval = zephyr_fetch_thread(rtos, &thread, curr);
+ if (retval != ERROR_OK)
+ goto error;
+
+ td = zephyr_array_append(&thread_array, sizeof(*td));
+ if (!td)
+ goto error;
+
+ td->threadid = thread.ptr;
+ td->exists = true;
+
+ if (thread.name[0])
+ td->thread_name_str = strdup(thread.name);
+ else
+ td->thread_name_str = alloc_printf("thr_%" PRIx32 "_%" PRIx32,
+ thread.entry, thread.ptr);
+ td->extra_info_str = alloc_printf("prio:%" PRId8 ",useropts:%" PRIu8,
+ thread.prio, thread.user_options);
+ if (!td->thread_name_str || !td->extra_info_str)
+ goto error;
+
+ if (td->threadid == current_thread)
+ curr_id = (int64_t)thread_array.elements - 1;
+ }
+
+ LOG_DEBUG("Got information for %zu threads", thread_array.elements);
+
+ rtos_free_threadlist(rtos);
+
+ rtos->thread_count = (int)thread_array.elements;
+ rtos->thread_details = zephyr_array_detach_ptr(&thread_array);
+
+ rtos->current_threadid = curr_id;
+ rtos->current_thread = current_thread;
+
+ return ERROR_OK;
+
+error:
+ td = thread_array.ptr;
+ for (size_t i = 0; i < thread_array.elements; i++) {
+ free(td[i].thread_name_str);
+ free(td[i].extra_info_str);
+ }
+
+ zephyr_array_free(&thread_array);
+
+ return ERROR_FAIL;
+}
+
+static int zephyr_update_threads(struct rtos *rtos)
+{
+ struct zephyr_params *param;
+ int retval;
+
+ if (!rtos->rtos_specific_params)
+ return ERROR_FAIL;
+
+ param = (struct zephyr_params *)rtos->rtos_specific_params;
+
+ if (!rtos->symbols) {
+ LOG_ERROR("No symbols for Zephyr");
+ return ERROR_FAIL;
+ }
+
+ if (rtos->symbols[ZEPHYR_VAL__KERNEL].address == 0) {
+ LOG_ERROR("Can't obtain kernel struct from Zephyr");
+ return ERROR_FAIL;
+ }
+
+ if (rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_OFFSETS].address == 0) {
+ LOG_ERROR("Please build Zephyr with CONFIG_OPENOCD option set");
+ return ERROR_FAIL;
+ }
+
+ retval = target_read_u8(rtos->target,
+ rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_SIZE_T_SIZE].address,
+ ¶m->size_width);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Couldn't determine size of size_t from host");
+ return retval;
+ }
+
+ if (param->size_width != 4) {
+ LOG_ERROR("Only size_t of 4 bytes are supported");
+ return ERROR_FAIL;
+ }
+
+ if (rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_NUM_OFFSETS].address) {
+ retval = target_read_u32(rtos->target,
+ rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_NUM_OFFSETS].address,
+ ¶m->num_offsets);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Couldn't not fetch number of offsets from Zephyr");
+ return retval;
+ }
+
+ if (param->num_offsets <= OFFSET_T_STACK_POINTER) {
+ LOG_ERROR("Number of offsets too small");
+ return ERROR_FAIL;
+ }
+ } else {
+ retval = target_read_u32(rtos->target,
+ rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_OFFSETS].address,
+ ¶m->offsets[OFFSET_VERSION]);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Couldn't not fetch offsets from Zephyr");
+ return retval;
+ }
+
+ if (param->offsets[OFFSET_VERSION] > 1) {
+ LOG_ERROR("Unexpected OpenOCD support version %" PRIu32,
+ param->offsets[OFFSET_VERSION]);
+ return ERROR_FAIL;
+ }
+ switch (param->offsets[OFFSET_VERSION]) {
+ case 0:
+ param->num_offsets = OFFSET_T_STACK_POINTER + 1;
+ break;
+ case 1:
+ param->num_offsets = OFFSET_T_COOP_FLOAT + 1;
+ break;
+ }
+ }
+ /* We can fetch the whole array for version 0, as they're supposed
+ * to grow only */
+ uint32_t address;
+ address = rtos->symbols[ZEPHYR_VAL__KERNEL_OPENOCD_OFFSETS].address;
+ for (size_t i = 0; i < OFFSET_MAX; i++, address += param->size_width) {
+ if (i >= param->num_offsets) {
+ param->offsets[i] = UNIMPLEMENTED;
+ continue;
+ }
+
+ retval = target_read_u32(rtos->target, address, ¶m->offsets[i]);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Could not fetch offsets from Zephyr");
+ return ERROR_FAIL;
+ }
+ }
+
+ LOG_DEBUG("Zephyr OpenOCD support version %" PRId32,
+ param->offsets[OFFSET_VERSION]);
+
+ uint32_t current_thread;
+ retval = target_read_u32(rtos->target,
+ zephyr_kptr(rtos, OFFSET_K_CURR_THREAD), ¤t_thread);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Could not obtain current thread ID");
+ return retval;
+ }
+
+ retval = zephyr_fetch_thread_list(rtos, current_thread);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("Could not obtain thread list");
+ return retval;
+ }
+
+ return ERROR_OK;
+}
+
+static int zephyr_get_thread_reg_list(struct rtos *rtos, int64_t thread_id,
+ struct rtos_reg **reg_list, int *num_regs)
+{
+ struct zephyr_params *params;
+ struct rtos_reg *callee_saved_reg_list = NULL;
+ target_addr_t addr;
+ int retval;
+
+ LOG_INFO("Getting thread %" PRId64 " reg list", thread_id);
+
+ if (rtos == NULL)
+ return ERROR_FAIL;
+
+ if (thread_id == 0)
+ return ERROR_FAIL;
+
+ params = rtos->rtos_specific_params;
+ if (params == NULL)
+ return ERROR_FAIL;
+
+ addr = thread_id + params->offsets[OFFSET_T_STACK_POINTER]
+ - params->callee_saved_stacking->register_offsets[0].offset;
+
+ retval = params->get_cpu_state(rtos, &addr, params, callee_saved_reg_list, reg_list, num_regs);
+
+ free(callee_saved_reg_list);
+
+ return retval;
+}
+
+static int zephyr_get_symbol_list_to_lookup(struct symbol_table_elem **symbol_list)
+{
+ *symbol_list = malloc(sizeof(zephyr_symbol_list));
+ if (!*symbol_list) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+
+ memcpy(*symbol_list, zephyr_symbol_list, sizeof(zephyr_symbol_list));
+ return ERROR_OK;
+}
+
+struct rtos_type zephyr_rtos = {
+ .name = "Zephyr",
+
+ .detect_rtos = zephyr_detect_rtos,
+ .create = zephyr_create,
+ .update_threads = zephyr_update_threads,
+ .get_thread_reg_list = zephyr_get_thread_reg_list,
+ .get_symbol_list_to_lookup = zephyr_get_symbol_list_to_lookup,
+};
Code Review / openocd.git / commitdiff