[fpc-pascal] rotating bits

Пётр Косаревский ppkk at mail.ru
Wed May 24 16:11:51 CEST 2006

> With register calling convention (which is the default calling convention
> in FPC 2.x), it can be reduced just to:
> function brol(b: byte; c: byte): byte; assembler; inline;
> asm
>   rolb  %cl,%al
> end;
> (and similarly for all the other functions). The first parameter goes to
> eax, the second to ecx, and the result is supposed to be in eax again.
> Tomas

Well, I am jealous of your knowledge of the calling conventions.
Did you notice, that in default compiler mode "mov %al,result" does not work?

Anyway, why don't introduce these functions?

More information about the fpc-pascal mailing list