[fpc-devel] Blackfin support

Jeppe Johansen jepjoh2 at kom.aau.dk
Fri Jul 9 14:36:17 CEST 2010

I would be interested in knowing whether it would be feasible to create 
DSP backends for FPC. I recently had the experience of using a TMS320C26 
which probably has to be programmed in assembler due to the limits of 
the instruction set. But I hear newer DSPs use instruction sets geared 
alot more towards highlevel compilers

Cortex A8 runs ARMv7A. All the Interlocked* functions in the ARM RTL 
already have implementations for >ARMv6 instructions(ldrex/strex) which 
is pretty much what the architecture manual wrote as example code

Michael Schnell skrev:
>  On 07/09/2010 01:55 PM, Nataraj S Narayan wrote:
>> Hi Michael
>> I too am planning to switch to 'sitara' AM3517 SBCs from 
>> at91sam9263.  Hope there would be an effort to an fpc port to this 
>> board on linux-uclibc.
> I understand that the Cortex A8 which powers the AM3x features the 
> full 32 bit "ARM" instruction set plus the 16 Bit "Thumb" instruction 
> set plus several enhancements. Thus code created by FPC/ARM  should 
> just run out of the box.
> In the Lazarus mailing list, we lately discussed how to special do 
> stuff like "atomic instructions" and "Futex without libc binding". 
> Here ARM-Linux offers a shared userland page with functions that are 
> always provided in a version optimized for the CPU subarch we are 
> running on. Using same in the RTL instead of doing our own (non 
> sub-arch optimized at runtime) code would be a nice enhancement for 
> the RTL
> -Michael
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