https://sourceware.org/bugzilla/show_bug.cgi?id=16083
Grigory Rechistov <grigory.rechistov at phystech dot edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |grigory.rechistov@phystech.
| |edu
Summary|objdump provide wrond |objdump provides wrong
|disassemble for mulsd |disassemble for MULSD
|instruction. |instruction when used with
| |an unusual combination of
| |prefixes
--- Comment #1 from Grigory Rechistov <grigory.rechistov at phystech dot edu>
---
The problem is present not just for MULSD but for many x86 instructions that
are encoded with a mandatory prefix (e.g. 0xF2), but also are allowed to have
optional prefixes like 0x66 to be inserted between opcode and mandatory prefix.
Hardware does not pay attention to prefixes order.
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