[ECOS] PowerPC hangs on memory read

Andrew Lunn andrew@lunn.ch
Fri Jun 18 07:48:00 GMT 2004


> The inner loop that performs the reads looks like this:
> 
>    address = PCMCIA_ATTRIBUTE_ADDR + i;
>    HAL_READ_UINT16( address, cis_content );
> 
> and the hangs happens during the HAL_READ_UINT16. I looked
> at the assembler that is generated, and besides being more
> verbose, the GNU code uses an LHZ instruction for the
> read, while the Metrowerks uses an LHA, hardly a reason
> to explain the inexplicable hangup.
> 
> Is there anyone that can suggest possible reasons?

You you checked the MMU setup? Maybe you don't have access to this
location?

        Andrew

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