Re: [PATCH 0/2] target/i386: Some mmx/sse instructions don't require

[Wei Li]

Ping......

And the title is target/i386: Some mmx/sse instructions don't require CR0.TS=0

On Fri, Mar 25, 2022 at 10:55 PM Wei Li <lw945lw945@yahoo.com> wrote:

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/427

All instructions decoded by 'gen_see' is assumed to require CRO.TS=0. But
according to SDM, CRC32 doesn't require it. In fact, EMMS, FMMS and some
mmx/sse instructions(0F38F[0-F], 0F3AF[0-F]) don't require it.

To solve the problem, first to move EMMS and FMMS out of gen_sse. Then
instructions in 'gen_sse' require it only when modrm & 0xF0 is false.

Wei Li (2):
  Move EMMS and FEMMS instructions out of gen_sse
  Some mmx/sse instructions in 'gen_sse' don't require CRO.TS=0

 target/i386/tcg/translate.c | 45 +++++++++++++++++--------------------
 1 file changed, 21 insertions(+), 24 deletions(-)

--
2.30.2

Thanks.

--

Wei Li