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Documentation:update qemugdb usage

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Remove nuttx-gdbinit,use tools/gdb/__init__.py instead

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
This commit is contained in:
anjiahao 2024-04-20 11:47:58 +08:00 committed by Xiang Xiao
parent d59f9186ca
commit 67b7152034
1 changed files with 21 additions and 30 deletions
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51
Documentation/guides/qemugdb.rst
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@ -53,42 +53,33 @@ Start GDB to connect to QEMU
.. code-block:: console
$ gdb-multiarch -ix tools/nuttx-gdbinit nuttx
(gdb) target extended-remote localhost:1234
Remote debugging using localhost:1234
0x000012ee in up_mdelay (milliseconds=milliseconds@entry=250)
at common/arm_mdelay.c:51
51 for (j = 0; j < CONFIG_BOARD_LOOPSPERMSEC; j++)
$ gdb-multiarch nuttx -ex "source tools/gdb/__init__.py" -ex "target remote 127.0.0.1:1234"
Type "apropos word" to search for commands related to "word"...
Reading symbols from nuttx...
set pagination off
source tools/gdb/lists.py
source tools/gdb/utils.py
source tools/gdb/memdump.py
if use thread command, please don't use 'continue', use 'c' instead !!!
source tools/gdb/thread.py
"handle SIGUSR1 "nostop" "pass" "noprint"
Remote debugging using 127.0.0.1:1234
0x0000a45a in up_idle () at chip/common/tiva_idle.c:62
62 }
(gdb)
#. From (gdb) prompt you can run commands to inpect NuttX:
.. code-block:: console
(gdb) info_nxthreads
target examined
_target_arch.name=armv7
$_target_has_fpu : 1
$_target_has_smp : 0
saved current_tcb (pid=0)
*
0 Thread 0x20001538 (Name: Idle Task, State: Running, Priority: 0, Stack: 464/1000) PC: 0x12fc in up_mdelay()
saved current_tcb (pid=0)
1 Thread 0x20005060 (Name: hpwork, State: Waiting,Semaphore, Priority: 224, Stack: 320/1992) PC: 0x47dd in work_thread()
saved current_tcb (pid=0)
2 Thread 0x20005c30 (Name: nsh_main, State: Waiting,Semaphore, Priority: 100, Stack: 1016/2000) PC: 0x1 in _vectors()
saved current_tcb (pid=0)
3 Thread 0x20006b40 (Name: NTP daemon, State: Waiting,Signal, Priority: 100, Stack: 864/1952) PC: 0x0 in _vectors()
saved current_tcb (pid=0)
4 Thread 0x20008540 (Name: telnetd, State: Waiting,Semaphore, Priority: 100, Stack: 616/2008) PC: 0x20008fd4 in No()
saved current_tcb (pid=0)
saved current_tcb (pid=0)
saved current_tcb (pid=0)
saved current_tcb (pid=0)
(gdb) info threads
Id Thread Info Frame
*0 Thread 0x2000168c (Name: Idle_Task, State: Running, Priority: 0, Stack: 1008) 0xa45a up_idle() at chip/common/tiva_idle.c:62
1 Thread 0x20005270 (Name: hpwork, State: Waiting,Semaphore, Priority: 224, Stack: 1984) 0xa68c up_switch_context() at common/arm_switchcontext.c:95
2 Thread 0x20005e30 (Name: nsh_main, State: Waiting,Semaphore, Priority: 100, Stack: 2008) 0xa68c up_switch_context() at common/arm_switchcontext.c:95
3 Thread 0x20006d48 (Name: NTP_daemon, State: Waiting,Signal, Priority: 100, Stack: 1960) 0xa68c up_switch_context() at common/arm_switchcontext.c:95
4 Thread 0x20008b60 (Name: telnetd, State: Waiting,Semaphore, Priority: 100, Stack: 2016) 0xa68c up_switch_context() at common/arm_switchcontext.c:95
(gdb)
As you can see QEMU and GDB are powerful tools to debug NuttX without using external board or expensive debugging hardware.