Re: Help writing ada booting kernel

[Xianzheng Zhou <joe@lgsolutions.com.au>]

Just wonderring, is it possible to replace int.S and boot.S using ada 
asm inline assembly instruction?

Joe

Wiktor Moskwa wrote:
> On 16.07.2007, Xianzheng Zhou <joe@lgsolutions.com.au> wrote:
>> In the example, int.S and boot.S are in assembly code. Is there a way to 
>> write this part in Ada?
>>
> 
> In boot.S you need a way to pass values of two registers (EAX and EBX)
> to the main procedure through stack - that's where Ada expects parameters.
> The code in int.S can't be put in procedures because interrupt handlers
> don't behave like procedures (stack frame has different format).
> 
> If a compiler supported "bare x86" target it wouldn't probably be
> a problem. For example if you compile something for AVR microcontroler
> using AVR-GCC, interrupt handlers are ordinary blocks of code wrapped
> in special macros - all necessary assembly code is generated by the
> compiler.
>