[ros-kernel] Re: RE: Re: RE: Re: Old reactos

[=?iso-8859-1?Q?ren=E9_Tournois_=3Cbetov=40free.fr=3E?<=...@fr...>]

Try to insert a couple of NOP between the Label declaration and the jump
instruction. If i remember well, there a little bug in NASM about this...
(unsure, but no relationship with the prefetch anyway).

Betov.


>I am very sorry, I also had to change the .exit to exit because
>otherwise nasm wouldn't build loadros.
>
>And still the system reboots, but I can now put the loop after next:
>	mov	eax,cr0
>	or	eax,0x10001
>	mov	cr0,eax
>	jmp	next
>next:
>break:
>	jmp break
>	;;
>	;; NOTE: This must be position independant (no references to
>	;; non absolute variables)
>	;;
>
>	;;
>	;; Initalize segment registers
>	;;
>	mov	ax,KERNEL_DS
>	mov	ds,ax
>	mov	ss,ax
>	mov	es,ax
>	mov	fs,ax
>	mov	gs,ax
>
>
>If I put the break after mov gs, ax though, the system reboots.
>
>
>Jurgen
>
>-----Original Message-----
>From: Casper Hornstrup [mailto:ch...@us...] 
>Sent: Wednesday, October 10, 2001 15:56
>To: ros...@re...
>Subject: [ros-kernel] Re: RE: Re: Old reactos
>
>
>On Wednesday 10 October 2001 00:40, Jurgen Van Gael wrote:
>> When I use the loop in loadros.asm, I get these results:
>>
>> If I put the break here:
>>
>> 		;;
>> 		;; Enter pmode and clear prefetch queue
>> 		;;
>> 		mov	eax,cr0
>> 		or	eax,0x10001
>> 		mov	cr0,eax
>> 	.break:
>> 		jmp .break
>> 		jmp	.next
>> 	.next:
>>
>> Then the system freezes with a blue screen
>>
>> When I put the loop after jmp .next, the system reboots.
>>
>> Am I right we are talking pmode right now. Could it be that the gdt or
>
>> idt is not setup properly?
>
>Try changing:
>
>jmp	.next
>.next:
>
>
>to:
>
>jmp	next
>next:
>
>IIRC, it should be a far jump to clear the prefetch queue.
>
>- Casper
>
>====================================================
>= To remove yourself from this mailing list, go to =
>= http://www.reactos.com/home/mailing.html         =
>====================================================
>
>====================================================
>= To remove yourself from this mailing list, go to =
>= http://www.reactos.com/home/mailing.html         =
>====================================================
>
>
>

====================================================
= To remove yourself from this mailing list, go to =
= http://www.reactos.com/home/mailing.html         =
====================================================