[ECOS] Question about fixed vector table(ARM).

Mark Salter msalter@redhat.com
Thu May 16 05:32:00 GMT 2002


>>>>> HuangQiang  writes:

> why can't we just use(for example for IRQ):

> 0x18  ldr pc, .IRQ      ; Can this jump to anywhere in the address
> space(32-bit)?

No. This is more limiting than a branch instruction. .IRQ has to
be within a 12bit offset of the PC for this instruction to work.

--Mark

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