[ECOS] exception when calling reset_platform

[Roland Caßebohm]

Hi,

my ARM7TDMI (SNDS100 Board) makes an abort prefetch exception when the 
application calls reset_platform().

I added two nop's because I thought the processor prefetches the init_done 
value, but this doesn't help:

----------
        .global reset_platform
        .type   reset_platform,function
reset_platform:
#ifdef CYGSEM_HAL_ROM_MONITOR
        // initialize CPSR (machine state register)
        mov     r0,#(CPSR_IRQ_DISABLE|CPSR_FIQ_DISABLE|CPSR_SUPERVISOR_MODE)
        msr     cpsr,r0
        b       warm_reset
#else
        mov     r0,#0
        mov     pc,r0           // Jump to reset vector
        //roland
        mov     r0,r0           // nop
        mov     r0,r0           // nop
#endif

init_done:
        .long   0xDEADB00B
----------

Does anybody know what's wrong?

Roland

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