[LLVMdev] Some bugs in x86 disasm (llvm-mc)

Craig Topper
2014-01-15T18:53:12Z

To fix it we need to change offset8/offset16/etc to have two suboperands
and update the printer to understand that. Also update the disassembler to
add the segment to the MCInst when its creating it. When I did these two
things the MCCodeEmitter broke because it tried to interpret the extra
operand as an immediate. I think I probably need to change the form from
RawFrm to something new that I can teach the MCCodeEmitter to handle
correctly.

I haven't looked at the patches yet. I was out of town most of last week
and trying to get caught back up.


On Tue, Jan 14, 2014 at 11:11 PM, David Woodhouse <dwmw2 at
infradead.org>wrote:

> On Tue, 2014-01-14 at 22:59 -0800, Craig Topper wrote:
> > I started trying to fix this tonight but it's pretty nasty to fix.
> > I'll try to make another go at it later this week.
>
> Much of it seems fixed already; what's left to fix? The segment prefix
> override? Does that mean we get to fix disassembly of '0x65 0xa4'
while
> we're at it? (Although we can't even *assemble* that one, I note.)
>
> Any comments on the patches I posted on Monday to fix various 16-bit
> disasm issues?
>
> --
> dwmw2
>
>


--
~Craig
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