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From: Florian Weimer <Florian.Weimer@RUS.Uni-Stuttgart.DE>
Newsgroups: comp.lang.ada
Subject: Re: Gnat Asm Insertion Question
Date: 22 Oct 2001 14:37:07 +0200
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Date: 2001-10-22T14:37:07+02:00
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"Michael Garrett" <michaelgarrett@csi.com> writes:

> I have the following snippet of code to put the processot into protected
> mode:
> 
> Asm ("movl %%cr0,%%eax; " &
>            "or $0x0001,%%eax; " &
>            "movl %%eax,%%cr0; " &
>            "ljmp $0x10,$1f; " &
>            "1: " &
>            "movl $0x18,%%eax; " &
>            "movl %%eax,%%ds; " &
>            "movl %%eax,%%es; " &
>            "movl %%eax,%%fs; " &
>            "movl %%eax,%%gs; " &
>            "movl %%eax,%%ss; ",
>            No_Output_Operands,
>            No_Input_Operands);

The output constraints are probably wrong, This sequence of
instructions changes a huge number of registers.