https://sourceware.org/bugzilla/show_bug.cgi?id=19722
Bug ID: 19722
Summary: [libopcodes] [Aarch64] Undefined SIMD instruction not
marked undefined
Product: binutils
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: njholcomb at wi dot rr.com
Target Milestone: ---
Pair word instruction, like ldpsw, are undefined if the address for loading is
specified in a register also used as a destination register.
One example from libopcodes is:
ldpsw x12, x6, [x6],#-8
>From the bytes:
0x68ea18cc
In this case, x6 is both a destination for the load, as well as supplying the
address for the load, which should be undefined.
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