sleep in laden's shutdown

[Glen Kaukola]

Hi there.

Here's what I came up with for sleeping a little while in laden's 
shutdown function:

        pushl   %eax
        movl    $0xFFF, %eax
sleep:  subl    $1, %eax
        hlt
        cmp     $0, %eax
        jne     sleep
        popl    %eax


My previous attempt was to use a bios call, but for some reason it 
didn't work out too well.  Just wondering if anyone can tell me why the 
following didn't work:

        pushl   %edx
        pushl   %eax
        movw    $0, %cx
        movw    $0, %dx
        movb    $0x86, %ah
        int     $0x15
        popl    %eax
        popl    %edx
        popl    %ecx


Oh, and by the way, the push and pop stuff can maybe be done away with 
if it's assembly thrown into some C code.  I just have that there since 
I'm testing things by throwing it into laden's ia32-crt.S file.  But 
then I'm by no means an expert on this stuff so maybe it needs to stay 
there after all.


Glen