[wellylug]The top 10 dead (or dying) computer skills
Richard Hector
richard at walnut.gen.nz
Fri Jul 13 10:50:07 NZST 2007
On Thu, 2007-07-12 at 21:01 +1200, Donald Gordon wrote:
> Well, actually, at least on x86, there are some weird instructions you
> need to produce that it's probably fairly hard to make your compiler
> emit: the instructions to switch into protected mode (for the
> bootloader), and the instructions to make system calls (for libc).
>
> In the bootloader case on x86 this is even worse, as the processor
> starts up in 16-bit mode, but generally you want to be running 32 bit
> code in protected mode. So you'd have to compile the bits of the code
> that ran before and after the switch differently, too, and set up the
> stack for 32 bit mode, and all that sort of fun.
Ah, well, if your compiler is incomplete ...
[ducks]
Richard
PS One reply is enough, thanks.
More information about the wellylug
mailing list