5:42 a.m.
Does anyone here know the difference between Thumb2 and Thumb? I could
extract it from the ISA docs, but I wondered if there was a summary
somewhere.
Thanks,
Andrew.
1:01 p.m.
On Sun, Apr 15, 2012 at 11:42:41AM +0100, Andrew Haley wrote:
Does anyone here know the difference between Thumb2 and Thumb? I
could
extract it from the ISA docs, but I wondered if there was a summary
somewhere.
At the core: Thumb is all 16-bit, Thumb2 is a mix of 16- and 32-bit
instructions to allow for more features.
Cheers,
--
Steve McIntyre steve.mcintyre(a)linaro.org
<http://www.linaro.org/> Linaro.org | Open source software for ARM SoCs
3:17 a.m.
On 04/15/2012 07:01 PM, Steve McIntyre wrote:
On Sun, Apr 15, 2012 at 11:42:41AM +0100, Andrew Haley wrote:
> Does anyone here know the difference between Thumb2 and Thumb? I could
> extract it from the ISA docs, but I wondered if there was a summary
> somewhere.
At the core: Thumb is all 16-bit, Thumb2 is a mix of 16- and 32-bit
instructions to allow for more features.
Sure, I get that, but I've never seen a sid-by-side list of the
instructions and their formats. Sure, I could extract it from the ISA
manual.
Andrew.
4:26 a.m.
Andrew Haley píše v Po 16. 04. 2012 v 09:17 +0100:
On 04/15/2012 07:01 PM, Steve McIntyre wrote:
> On Sun, Apr 15, 2012 at 11:42:41AM +0100, Andrew Haley wrote:
>> Does anyone here know the difference between Thumb2 and Thumb? I could
>> extract it from the ISA docs, but I wondered if there was a summary
>> somewhere.
>
> At the core: Thumb is all 16-bit, Thumb2 is a mix of 16- and 32-bit
> instructions to allow for more features.
Sure, I get that, but I've never seen a sid-by-side list of the
instructions and their formats. Sure, I could extract it from the ISA
manual.
Pavel Tisnovsky is writing a series of rather detailed articles about
ARM and the last ones were dedicated to Thumb and Thumb2 [1],
unfortunately it's in czech only :-(
Dan
[1]
http://www.root.cz/clanky/instrukcni-sada-thumb-2-u-mikroprocesoru-arm/
5:01 a.m.
Andrew Haley píše v Po 16. 04. 2012 v 10:28 +0100:
On 04/16/2012 10:26 AM, Dan Horák wrote:
> Pavel Tisnovsky is writing a series of rather detailed articles about
> ARM and the last ones were dedicated to Thumb and Thumb2 [1],
> unfortunately it's in czech only
Hmmm, I might ask him to translate it...
or try google translate - the result [1] doesn't look unusable to me
[1]
http://translate.google.com/translate?sl=cs&tl=en&js=n&prev=_...
Dan
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