gdb/record: add support to vmovd and vmovq instructions
This commit adds support to the x86_64 AVX instructions vmovd and vmovq.
The programmers manuals for Intel and AMD describe these 2 instructions
as being almost the same, but my local testing, using gcc 13.2 on Fedora
39, showed several differences and inconsistencies.
The instruction is supposed to always use the 3-byte VEX prefix, but I
could only find 2-byte versions. The instructions aren't differentiated
by the VEX.w bit, but by opcodes and VEX.pp.
This patch adds a test with many different uses for both vmovd and
vmovq. It also updates the test gdb.reverse/step-precsave.exp to
reference the generic "missing avx support" bug open in the bug tracker
(17346), instead of pointing to one that specifically calls out to
vmovd instructions.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=23188
Approved-By: Tom Tromey <tom@tromey.com>
5 files changed
