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Re: redboot elf loader


>>>>> Gary Thomas writes:

> On Mon, 2003-09-29 at 08:00, Mark Salter wrote:
>> >>>>> Gary Thomas writes:
>> 
>> > I'd suggest that you leave this to your startup code.  Have it copy the
>> > data from the VMA to the LMA - that's how we handle it in eCos.
>> 
>> Actually, we copy LMA to VMA. That is, for ROM startup the .data section
>> has a VMA in RAM and an LMA in ROM. I tend to believe that the ELF loader
>> should indeed be using LMA addresses.
>> 

> How could this work for this example - loading via LMA into memory
> that RedBoot clearly needs while running?

If that is the case, then the example is broken. My reading was that
the VMA was 0x0 and LMA was somewhere where the other parts of the
program lives. My point is that the LMA is where a loader should put
sections (Load Memory Address) and VMA is where the running program
actually accesses the sections.

--Mark



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