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[Qemu-devel] What do these instructions do??

From: Davide
Subject: [Qemu-devel] What do these instructions do??
Date: Thu, 05 Apr 2012 22:14:07 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120314 Thunderbird/11.0 
In target-i386/translate.c there are this instructions:
int op, f, val;
op = (b >> 3) & 7;
f = (b >> 1) & 3;
if ((b & 1) == 0)
   ot = OT_BYTE;
else
   ot = dflag + OT_WORD;
What does this code do??
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