Re: [ECOS] Gdb 6.7, gcc 4.2.2, redboot on arm (gba), "target remote" doesn't work.

[Paul Chavent <paul dot chavent at free dot fr>]

Hello.

I have found that it fails in hal/arm/arch/current/src/hal_misc.c at void breakpoint(void).

When i execute
void
breakpoint(void)
{
  diag_printf("breakpoint\n");
    HAL_BREAKPOINT(_breakinst);
  diag_printf("breakpoint\n");
}
The second trace doesn't appear and the target reboot.

When i try to compile
void
breakpoint(void)
{
  diag_printf("breakpoint %p\n", _breakinst);
    HAL_BREAKPOINT(_breakinst);
  diag_printf("breakpoint %p\n", _breakinst);
}
I have hal_misc.c:230: error: `_breakinst' undeclared (first use in this function)
(i use, now gcc 3.4.3 from gnuarm).

I go on my investigations...

Andrew Lunn wrote:
> On Mon, Jan 14, 2008 at 02:53:02PM +0100, Paul Chavent wrote:
> > Andrew Lunn wrote:
> > > Lets try something simple. Connect to RedBoot over the serial
> > > port. Send it a $ character. Does it crash and reboot, or does it just
> > > go silent?
> > >
> > > $ is the magic character that tells RedBoot to send characters to the
> > > stub.
> > >
> > > If it does not reboot, reboot it and send
> > >
> > > $m0,10#2a
> > >
> > > which i think is a valid command to read 10 bytes from address 0. Any
> > > response or a reboot?
> > >
> > >          Andrew
> > Damned ! It reboots !
>
> So look in packages/redboot/current/main.c. Put in some diag_printf()
> before the HAL_THREAD_INIT_CONTEXT and HAL_THREAD_SWITCH_CONTEX calls.
> Check the values of workspace_end, breakpoint, trampoline etc. 
>
>       Andrew 


--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss