[ECOS] help using GDB

[ECOS] help using GDB

[Ecos Temp]

questions on gdb:
- why is there 2 threads?
0x00013c38 in ?? ()
(gdb) info threads
  2 Thread 2 ( Name: main, State: ready, Priority: 10 )  0x00011650 in ?? ()
* 1 Thread 1 ( Name: Idle Thread, State: running, Priority: 31 )  0x00013c38
in
?? ()
(gdb) 

Also I load a program hello and use cont, nothing displays ie "Hello", but I
control C out from gdb, and start a terminal session over com1, and the
redboot prompt appears.  Any clues?
- Loading section .rom_vectors, size 0x40 lma 0x40000
Loading section .text, size 0xc7d0 lma 0x40040
Loading section .rodata, size 0x459 lma 0x4c810
Loading section .data, size 0x484 lma 0x4cc6c
Start address 0x40040, load size 53485
Transfer rate: 25169 bits/sec, 303 bytes/write.
(gdb) cont
Continuing.

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Re: [ECOS] help using GDB

[Jonathan Larmour]

Ecos Temp wrote:
> 
> questions on gdb:
> - why is there 2 threads?
> 0x00013c38 in ?? ()
> (gdb) info threads
>   2 Thread 2 ( Name: main, State: ready, Priority: 10 )  0x00011650 in ?? ()
> * 1 Thread 1 ( Name: Idle Thread, State: running, Priority: 31 )  0x00013c38
> in
> ?? ()
> (gdb)

The main thread is a thread created to call main() - the normal entry point
of a standard C program. If you haven't supplied a main(), it will just
exit straight away. You can turn it off in the libc startup package.

The idle thread is a special kernel thread that exists so that the kernel
always has something to do. It simplifies the code.


> Also I load a program hello and use cont, nothing displays ie "Hello", but I
> control C out from gdb, and start a terminal session over com1, and the
> redboot prompt appears.  Any clues?
> - Loading section .rom_vectors, size 0x40 lma 0x40000
> Loading section .text, size 0xc7d0 lma 0x40040
> Loading section .rodata, size 0x459 lma 0x4c810
> Loading section .data, size 0x484 lma 0x4cc6c
> Start address 0x40040, load size 53485
> Transfer rate: 25169 bits/sec, 303 bytes/write.
> (gdb) cont
> Continuing.

You'll need to show the code you used and how you compiled it!

Jifl
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