change log for rtems (2011-10-21)

[Sebastian Huber]

On 22/10/11 19:23, Chris Johns wrote:
> On 21/10/11 8:11 PM, rtems-vc at rtems.org wrote:
>> +#else /* ASM */
>> +
>> +    .macro    NIOS2_ASM_DISABLE_INTERRUPTS new_status, current_status
>> +    movhi    \new_status, %hiadj(_Nios2_ISR_Status_mask)
>> +    addi    \new_status, \new_status, %lo(_Nios2_ISR_Status_mask)
>> +    and    \new_status, \current_status, \new_status
>> +    ori    \new_status, \new_status, %lo(_Nios2_ISR_Status_bits)
>> +    wrctl    status, \new_status
>> +    .endm
>> +
>> +#endif /* ASM */
>
> What is this for and do we use it ?

It can be used to disable interrupts in assembler code.  It is used by 
our not yet committed BSP which has support for the memory protection 
unit (MPU) to protect the thread stacks.  It will take several weeks 
until this is ready for integration into the CVS.  We need a couple of 
changes in the Score.

-- 
Sebastian Huber, embedded brains GmbH

Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone   : +49 89 18 90 80 79-6
Fax     : +49 89 18 90 80 79-9
E-Mail  : sebastian.huber at embedded-brains.de
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