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[binutils-gdb] x86: ignore high register select bit(s) in 32- and 16-bit modes
- From: sergiodj+buildbot at sergiodj dot net
- To: gdb-testers at sourceware dot org
- Date: Thu, 16 Nov 2017 08:39:08 -0500
- Subject: [binutils-gdb] x86: ignore high register select bit(s) in 32- and 16-bit modes
- Authentication-results: sourceware.org; auth=none
*** TEST RESULTS FOR COMMIT 5f847646eeb0107cb8c5e44c8bca3a4c88c91673 ***
Author: Jan Beulich <jbeulich@novell.com>
Branch: master
Commit: 5f847646eeb0107cb8c5e44c8bca3a4c88c91673
x86: ignore high register select bit(s) in 32- and 16-bit modes
While commits 9889cbb14e ("Check invalid mask registers") and
abfcb414b9 ("X86: Ignore REX_B bit for 32-bit XOP instructions") went a
bit into the right direction, this wasn't quite enough:
- VEX.vvvv has its high bit ignored
- EVEX.vvvv has its high bit ignored together with EVEX.v'
- the high bits of {,E}VEX.vvvv should not be prematurely zapped, to
allow proper checking of them when the fields has to hold al ones
- when the high bits of an immediate specify a register, bit 7 is
ignored