Anonymous user
X86-64 Instruction Encoding: Difference between revisions
m
→REX prefix
| [unchecked revision] | [unchecked revision] |
m (→ModR/M) |
m (→REX prefix) |
||
Line 126:
The REX prefix enabled 64-bit specific features. The layout is as follows:
<pre>
+---+---+---+---+---+---+---+---+
| 0 1 0 0 | w | r | x | b |
| |||