[PATCH 2/9] lpc2k: Exception vector handling
Ithamar R. Adema
ithamar.adema at team-embedded.nl
Thu Mar 17 12:28:57 EDT 2011
On Thu, 2011-03-17 at 17:18 +0100, Uwe Kleine-König wrote:
> On Thu, Mar 17, 2011 at 04:54:17PM +0100, Ithamar R. Adema wrote:
> > diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
> > index e8d8856..618a971 100644
> > --- a/arch/arm/kernel/entry-armv.S
> > +++ b/arch/arm/kernel/entry-armv.S
> > @@ -1208,6 +1208,7 @@ __stubs_end:
> >
> > .globl __vectors_start
> > __vectors_start:
> > +#ifndef CONFIG_ARCH_LPC2K
> > ARM( swi SYS_ERROR0 )
> > THUMB( svc #0 )
> > THUMB( nop )
> > @@ -1218,6 +1219,23 @@ __vectors_start:
> > W(b) vector_addrexcptn + stubs_offset
> > W(b) vector_irq + stubs_offset
> > W(b) vector_fiq + stubs_offset
> > +#else /* CONFIG_ARCH_LPC2K */
> The description from the commit log should be repeated here.
OK, will include the description as comment there in the next version.
> And I wonder if this shouldn't depend on CONFIG_ARCH_LPC2K but
> CONFIG_MMU.
Well, looking at th uClinux kernel tree, it seems this was only done for
the NXP LPC2K range, so that's why I kept it under CONFIG_ARCH_LPC2K.
> > + swi SYS_ERROR0
> I think arm7tdmi doesn't have thumb2, does it? If it has you need to do
> ARM(swi SYS_ERROR0)
> THUMB(svc ..)
> ...
>
> as above
Correct, the ARM7TDMI-S only supports Thumb, not Thumb2.
Thanks for reviewing!
Ithamar.
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