1 /*
2 * Copyright (c) 2024 Meta Platforms
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include "kernel_shell.h"
8
9 #include <zephyr/debug/symtab.h>
10 #include <zephyr/kernel.h>
11
print_trace_address(void * arg,unsigned long ra)12 static bool print_trace_address(void *arg, unsigned long ra)
13 {
14 const struct shell *sh = arg;
15 #ifdef CONFIG_SYMTAB
16 uint32_t offset = 0;
17 const char *name = symtab_find_symbol_name(ra, &offset);
18
19 shell_print(sh, "ra: %p [%s+0x%x]", (void *)ra, name, offset);
20 #else
21 shell_print(sh, "ra: %p", (void *)ra);
22 #endif
23
24 return true;
25 }
26
cmd_kernel_thread_unwind(const struct shell * sh,size_t argc,char ** argv)27 static int cmd_kernel_thread_unwind(const struct shell *sh, size_t argc, char **argv)
28 {
29 struct k_thread *thread;
30 int err = 0;
31
32 if (argc == 1) {
33 thread = arch_current_thread();
34 } else {
35 thread = UINT_TO_POINTER(shell_strtoull(argv[1], 16, &err));
36 if (err != 0) {
37 shell_error(sh, "Unable to parse thread ID %s (err %d)", argv[1], err);
38 return err;
39 }
40
41 if (!z_thread_is_valid(thread)) {
42 shell_error(sh, "Invalid thread id %p", (void *)thread);
43 return -EINVAL;
44 }
45 }
46 shell_print(sh, "Unwinding %p %s", (void *)thread, thread->name);
47
48 arch_stack_walk(print_trace_address, (void *)sh, thread, NULL);
49
50 return 0;
51 }
52
53 KERNEL_THREAD_CMD_ARG_ADD(unwind, NULL, "Unwind a thread.", cmd_kernel_thread_unwind, 1, 1);
54
