Re: [ECOS] qustion about GDB

["james chen" <james_ch1 at sina dot com>]

Thanks. I have written an example, it has two threads, I use insight5.0 and
redboot. but it will be no response in running the code
Cyg_Interrupt::enable_interrupts()( called by Cyg_Scheduler::start in
sched.cxx line 313).

> >>>>> "james" == james chen <james_ch1@sina.com> writes:
>
> james>        I have found the reason, it is that the IRQ bit is
> james> disable in Current Progarm Staus Register(CPSR). I have check
> james> the vectors.S in arm/arch, I don't find any code to re-enable
> james> IRQ in CPSR, where can I have a chance to re-enable it in my
> james> platform code?
>
> It should be enabled in the ctrlc init code - if that is configured
> into your system. Look for this in vectors.S:
>
> #if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT) \
>     || defined(CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT)
>         .extern hal_ctrlc_isr_init
>         bl      hal_ctrlc_isr_init
> #endif
>
> james>       it seem that eCos will run in supervisor mode between OS
> james> and Applications. but I want OS running in supervisor mode and
> james> Applications running in user mode, how to change it? Will eCos
> james> support this in future?
>
> That is unlikely to ever happen - eCos application needs to be able to
> use HAL cache and interrupt macros which cannot be used from user
> mode.
>
> jesper
>
>