TSS in fasm

os.hacker64 · Post by **os.hacker64** » Tue Feb 26, 2008 12:00 pm

Is there an example of a TSS Descriptor in Fasm out there? I have no Idea how to set one up, I know the structure of it, but setting it up has become a problem.

DeletedAccount · Post by **DeletedAccount** » Tue Feb 26, 2008 12:07 pm

Fasm has a similar syntax as that of nasm ... You may have look at the
example provided by John Fine .. In tutorial section of www.osdever.net

os.hacker64 · Post by **os.hacker64** » Tue Feb 26, 2008 12:13 pm

I don't like macros much, I can't seem to figure that out.

OMFG I FEEL LIKE A NOOB!

os.hacker64 · Post by **os.hacker64** » Tue Feb 26, 2008 12:37 pm

This is what I have now, it triple faults when I test it on my computer(at least thats what I think is happening)and restarts.

exkor · Post by **exkor** » Tue Feb 26, 2008 1:38 pm

Write handlers for CPu exceptions, especially #GP. Look at the IRET in the INtel 2A manual to understand better what it pops out. Then do tss thing with interrupts enabled & PIC masked.

JamesM · Post by **JamesM** » Tue Feb 26, 2008 1:40 pm

If you can't work out how to use assembler macros then you have got big problems ahead...

os.hacker64 · Post by **os.hacker64** » Tue Feb 26, 2008 1:43 pm

macros create confusion for me.
especially in asm. I don't use them.

nekros · Post by **nekros** » Sat Mar 22, 2008 7:07 pm

I try to setup the tss descriptor in fas in somewhat the same way that I set it up in C(that compiled but didn't work

) with shifts and such the only problem is that when I tried to set the descriptor I would get things like value out of range and crap. How else can I do this???

nekros · Post by **nekros** » Sat Mar 22, 2008 7:29 pm

oops, I thought I made a new post

Dex · Post by **Dex** » Sun Mar 23, 2008 10:20 am

Try this, its nasm but easy to convert

nekros · Post by **nekros** » Sun Mar 23, 2008 12:13 pm

you are awesome dex!

OSDev.org

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