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x86 instruction format and encoding http://forums.osdever.net/viewtopic.php?f=10&t=142 |
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Author: | DudeOfX [ Thu Jan 21, 2010 7:57 am ] |
Post subject: | x86 instruction format and encoding |
I started to make an effort to make an assembler... and I am looking at these intel manuals and well its not straight forwards... sooo I am starting by taking a brute force approach... I am using fasm to assemble simple instructions I want to encode... I get the binary opcodes from the assembled file and thats what I'm using... I'm gonna store them in a big array of opcodes.. I know thats the dumb way of doing it... I am hoping to see a pattern that would help me read the intel manuals for the more complicated instructions... and I am posting here to check if anybody here can point me on a better direction... |
Author: | DudeOfX [ Thu Jan 21, 2010 9:02 am ] |
Post subject: | Re: x86 instruction format and encoding |
Never mind sort off, I found this reference site which explains it much easier... http://www.arl.wustl.edu/~lockwood/class/cse306-s04/resources/opcodes.html |
Author: | brenden [ Mon Feb 01, 2010 1:14 pm ] |
Post subject: | Re: x86 instruction format and encoding |
Cool link. Let us know how it turns out for you! |
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