https://sourceware.org/bugzilla/show_bug.cgi?id=20763
Bug ID: 20763
Summary: 8e opcode wrong disassembling
Product: binutils
Version: 2.26
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: anatolymik at gmail dot com
Target Milestone: ---
8e opcode(mov Sw, Ew) is disassembled wrong for source register operand.
There is example for 16-bit mode here:
66 8e c0: mov es, eax
but must be:
66 8e c0: mov es, ax
Most significant bits of source register is ignored unlike 8c opcode(mov Ev,
Sw). For 8c opcode most significant bits are zeroed if operand size is larger
than 16 bit.
Source register is 16-bit for all processor modes.
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