zhuyanlinzyl opened a new pull request #4810:
URL: https://github.com/apache/incubator-nuttx/pull/4810
## Summary
Patch 1: add tcb strcut for task-aware debug information
Patch 2: add tcbinfo struct in procfs
Patch 3: add plugin in JLinkGDBServer for nuttx thread aware
## Impact
No. Enhance nuttx debug feature.
## Testing
When nuttx config with `CONFIG_DEBUG_TCBINFO`.
We can debug nuttx with nuttx thread aware.
```
make -f Makefile.host jlink-nuttx.so
JLinkGDBServer -if SWD -device Cortex-M55 -rtos
/home/zyl/miwear/nuttx/tools/jlink-nuttx
1 show nuttx threads
```
Id Target Id Frame
* 2 Thread 1 ([PID:000]Idle Task:0003[PRI:000]) nx_start () at
init/nx_start.c:797
3 Thread 2 ([PID:001]hpwork:0005[PRI:224]) arm_switchcontext
(saveregs=0x3c00927c, restoreregs=0x3c00c5ac) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
4 Thread 19 ([PID:018]rpmsg-uorb-sens:0005[PRI:100]) arm_switchcontext
(saveregs=0x3c015fbc, restoreregs=0x3c00efdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
5 Thread 4 ([PID:003]bes_main:0005[PRI:101]) arm_switchcontext
(saveregs=0x3c00ae1c, restoreregs=0x3c00a2ec) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
6 Thread 5 ([PID:004]rptun:0005[PRI:224]) arm_switchcontext
(saveregs=0x3c00c5ac, restoreregs=0x3c010fac) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
7 Thread 6 ([PID:005]rptun:0005[PRI:224]) arm_switchcontext
(saveregs=0x3c00d43c, restoreregs=0x3c012acc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
8 Thread 7 ([PID:006]rptun:0005[PRI:224]) arm_switchcontext
(saveregs=0x3c00e29c, restoreregs=0x2000972c <g_idletcb+140>) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
9 Thread 8 ([PID:007]init:0005[PRI:100]) arm_switchcontext
(saveregs=0x3c00efdc, restoreregs=0x2000972c <g_idletcb+140>) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
10 Thread 11 ([PID:010]thread-10:0005[PRI:101]) arm_switchcontext
(saveregs=0x3c00a2ec, restoreregs=0x3c00efdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
11 Thread 13 ([PID:012]kvdbd:0005[PRI:100]) arm_switchcontext
(saveregs=0x3c011cfc, restoreregs=0x3c013cdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
12 Thread 14 ([PID:013]rpmsg-gpio:0005[PRI:224]) arm_switchcontext
(saveregs=0x3c012acc, restoreregs=0x3c00efdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
13 Thread 15 ([PID:014]rpmsg-uorb-audio:0005[PRI:100]) arm_switchcontext
(saveregs=0x3c013cdc, restoreregs=0x3c014e2c) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
14 Thread 16 ([PID:015]rpmsg-uorb-cp:0005[PRI:100]) arm_switchcontext
(saveregs=0x3c014e2c, restoreregs=0x3c015fbc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
2 change nuttx thread
```
(gdb) thread 4
[Switching to thread 4 (Thread 19)]
#0 arm_switchcontext (saveregs=0x3c015fbc, restoreregs=0x3c00efdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
121 return reg0;
3 show task backtrace
```
(gdb) bt
#0 arm_switchcontext (saveregs=0x3c015fbc, restoreregs=0x3c00efdc) at
/home/zyl/code/m1ap/nuttx/include/arch/armv8-m/syscall.h:121
#1 0x2c016ab6 in up_block_task (tcb=tcb@entry=0x3c015f30,
task_state=task_state@entry=TSTATE_WAIT_SEM) at armv8-m/arm_blocktask.c:139
#2 0x2c008338 in nxsem_wait (sem=sem@entry=0x3c016b44) at
semaphore/sem_wait.c:153
#3 0x2c03d054 in poll_semtake (sem=0x3c016b44) at vfs/fs_poll.c:59
#4 nx_poll (fds=fds@entry=0x3c015ca8, nfds=32, timeout=1006721824) at
vfs/fs_poll.c:439
#5 0x2c03d0c0 in poll (fds=fds@entry=0x3c015ca8, nfds=<optimized out>,
timeout=<optimized out>) at vfs/fs_poll.c:500
#6 0x2c00927c in ppoll (fds=fds@entry=0x3c015ca8, nfds=738386121,
nfds@entry=32, timeout_ts=timeout_ts@entry=0x0,
sigmask=sigmask@entry=0x3c016c00) at signal/sig_ppoll.c:122
#7 0x2c02e0c8 in uorb_rpmsg_task (argc=<optimized out>, argv=<optimized
out>) at uORB/uORBRpmsg.cpp:404
#8 0x2c00fa42 in nxtask_startup (entrypt=entrypt@entry=0x2c02dfd5
<uorb_rpmsg_task(int, char**)>, argc=<optimized out>, argv=<optimized out>) at
sched/task_startup.c:151
#9 0x2c00971a in nxtask_start () at task/task_start.c:130
#10 0x00000000 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
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