i386 misassembly?
Alan Modra
amodra@bigpond.net.au
Tue Nov 1 07:21:00 GMT 2005
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Tue Nov 1 07:21:00 GMT 2005
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On Mon, Oct 31, 2005 at 10:17:18PM -0800, Eric Christopher wrote: > > On Oct 31, 2005, at 6:36 PM, Alan Modra wrote: > > >On Mon, Oct 31, 2005 at 06:18:09PM -0800, Eric Christopher wrote: > >>00000000 <.text>: > >> 0: de f1 fdivp %st,%st(1) > >> > >>I was reading the manual (vol 2a) and it looks like this is supposed > >>to assemble as de f9, > >>am I nuts or reading something wrong? > > > >See the comment at the start of include/opcode/i386.h. gcc is > >nuts. :) > > Gar. > > Ooookay. So, what does this mean to the processor? I mean, the > assembly is kinda wrong yes? All the processor cares about is the 0xDEF1, which is "Divide ST(0) by ST(1), store result in ST(1), and pop the register stack." -- Alan Modra IBM OzLabs - Linux Technology Centre
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