[fpc-devel] arm embedded cortexM3 unrecognized opcode

[Jeppe Johansen]

Could it be because FPC uses OABI per default? :) Try recompiling fpc 
and your application for EABI. I'm not an expert on ABI's, though as far 
as I understand, it's merely a definition of how userland applications 
should call Linux kernel functions

Nataraj S Narayan skrev:
> Hi
>
> May I ask why do we need a CONFIG_OABI_COMPAT=y in the kernel to for 
> fpc to work on arm-linux?
>
> regards
>
> Nataraj
>
> On Wed, Jul 14, 2010 at 3:42 PM, Jeppe Johansen <jepjoh2 at kom.aau.dk 
> <mailto:jepjoh2 at kom.aau.dk>> wrote:
>
>     Well, this is off topic, but ARM is quite a bit backwards
>     compatible. All ARM versions are backwards compatible(if we ignore
>     thumb, which fpc doesn't support anyway) :)
>
>     Geoffrey Barton skrev:
>
>
>         On 14 Jul 2010, at 10:49, Bernd Mueller wrote:
>
>             Michael Schnell wrote:
>
>                 On 07/14/2010 11:02 AM, Bernd Mueller wrote:
>
>                     ... which could easily be done in gcc btw. ...
>
>                 I'm quite sure that FPC's ASM can compile hex
>                 constants (using "DC" ???)
>
>
>             that is not the point. You don't wont to bother with
>             (error prone) hex constants, but want to use the regular
>             assembler mnemonics.
>
>
>         quite right! especially with a processor like the ARM, where
>         it keeps, er.., improving its instruction set between each
>         generation of hardware!
>
>         rgds,
>         Geoffrey
>
>
>
>             Regards, Bernd.
>
>
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