[root@centos7 hello_world_c]# aarch64-rtems6-gdb o-optimize/hello.exe
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Reading symbols from o-optimize/hello.exe...
(gdb) target remote :8889
Remote debugging using :8889
bsp_vector_table_begin () at ../../../bsps/aarch64/shared/start/start.S:55
55 mov x5, x1 /* machine type number or ~0 for DT boot */
(gdb) b
Breakpoint 1 at 0x40008000: file ../../../bsps/aarch64/shared/start/start.S, line 55.
(gdb) b rtems_task Init
Function "rtems_task Init" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) b rtems_task_create
Breakpoint 2 at 0x4000ee10: file ../../../cpukit/rtems/src/taskcreate.c, line 77.
(gdb) c
Continuing.
Breakpoint 2, rtems_task_create (name=name@entry=1430860064, initial_priority=initial_priority@entry=1, stack_size=stack_size@entry=10240, initial_modes=initial_modes@entry=256, attribute_set=attribute_set@entry=0,
id=id@entry=0x40108c8c <_ISR_Stack_area_begin+9164>) at ../../../cpukit/rtems/src/taskcreate.c:77
77 memset( &config, 0, sizeof( config ) );
(gdb) bt
#0 rtems_task_create (name=name@entry=1430860064, initial_priority=initial_priority@entry=1, stack_size=stack_size@entry=10240, initial_modes=initial_modes@entry=256, attribute_set=attribute_set@entry=0,
id=id@entry=0x40108c8c <_ISR_Stack_area_begin+9164>) at ../../../cpukit/rtems/src/taskcreate.c:77
#1 0x000000004000eeac in _RTEMS_tasks_Initialize_user_task () at ../../../cpukit/rtems/src/taskinitusers.c:35
#2 0x000000004000f060 in rtems_initialize_executive () at ../../../cpukit/sapi/src/exinit.c:116
#3 0x0000000040008c7c in boot_card (cmdline=<optimized out>) at ../../../bsps/shared/start/bootcard.c:55
#4 0x00000000400080cc in _el1_start () at ../../../bsps/aarch64/shared/start/start.S:308
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) b rtems_task_start
Breakpoint 3 at 0x4000eee0: file ../../../cpukit/rtems/src/taskstart.c, line 33.
(gdb) b rtems_task_delete
Function "rtems_task_delete" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) c
Continuing.
Breakpoint 3, rtems_task_start (id=167837697, entry_point=entry_point@entry=0x40008900 <Init>, argument=argument@entry=1074801928) at ../../../cpukit/rtems/src/taskstart.c:33
33 Thread_Entry_information entry = {
(gdb) bt
#0 rtems_task_start (id=167837697, entry_point=entry_point@entry=0x40008900 <Init>, argument=argument@entry=1074801928) at ../../../cpukit/rtems/src/taskstart.c:33
#1 0x000000004000eec0 in _RTEMS_tasks_Initialize_user_task () at ../../../cpukit/rtems/src/taskinitusers.c:47
#2 0x000000004000f060 in rtems_initialize_executive () at ../../../cpukit/sapi/src/exinit.c:116
#3 0x0000000040008c7c in boot_card (cmdline=<optimized out>) at ../../../bsps/shared/start/bootcard.c:55
#4 0x00000000400080cc in _el1_start () at ../../../bsps/aarch64/shared/start/start.S:308
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) s
46 if ( entry_point == NULL ) {
(gdb) list
41 };
42 Thread_Control *the_thread;
43 ISR_lock_Context lock_context;
44 Status_Control status;
45
46 if ( entry_point == NULL ) {
47 return RTEMS_INVALID_ADDRESS;
48 }
49
50 the_thread = _Thread_Get( id, &lock_context );
(gdb) b _Thread_Start
Breakpoint 4 at 0x40013340: file ../../../cpukit/score/src/threadstart.c, line 35.
(gdb) c
Continuing.
Breakpoint 4, _Thread_Start (the_thread=0x40102090 <_RTEMS_tasks_Objects>, entry=entry@entry=0x40108c48 <_ISR_Stack_area_begin+9096>, lock_context=lock_context@entry=0x40108c40 <_ISR_Stack_area_begin+9088>) at ../../../cpukit/score/src/threadstart.c:35
35 _Thread_State_acquire_critical( the_thread, lock_context );
(gdb) b printf
Function "printf" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) b test.c:13
Breakpoint 5 at 0x40008900: file test.c, line 13.
(gdb) c
Continuing.
Breakpoint 5, Init (ignored=1074801928) at test.c:13
13 printf( "\n\n*** HELLO WORLD TEST ***\n" );
(gdb) bt
#0 Init (ignored=1074801928) at test.c:13
#1 0x0000000040011e64 in _Thread_Handler () at ../../../cpukit/score/src/threadhandler.c:145
#2 0x0000000040011e00 in ?? ()
Backtrace stopped: not enough registers or memory available to unwind further
(gdb) c
Continuing.
[Inferior 1 (process 1) exited normally]
(gdb) quit
[root@centos7 hello_world_c]#