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Re: Question about fixed vector table(ARM).
- From: Mark Salter <msalter at redhat dot com>
- To: jameshq at liverpool dot ac dot uk
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Thu, 16 May 2002 08:30:48 -0400
- Subject: Re: [ECOS] Question about fixed vector table(ARM).
- References: <KIEBICHBADHFCLGCKOPDEEAJCMAA.jameshq@liv.ac.uk>
>>>>> 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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