* [PATCH] x86: properly decode EVEX.W for AVX512_4{FMAPS,VNNIW} insns
@ 2022-10-14 14:11 Jan Beulich
2022-10-14 17:29 ` H.J. Lu
0 siblings, 1 reply; 2+ messages in thread
From: Jan Beulich @ 2022-10-14 14:11 UTC (permalink / raw)
To: Binutils; +Cc: H.J. Lu
These require EVEX.W=0. Use %XS to facilitate the checking, even if for
the AVX512_4VNNIW ones this is kind of an abuse (as 's' there stands for
"signed", not "single").
While there also correct the 3rd operand for the AVX512_4VNNIW entries:
Only the memory form is allowed (just like for AVX512_4FMAPS, where the
correct type is already in use).
---
This goes on top of "x86: fold AVX512-VNNI disassembler entries with
AVX-VNNI ones", submitted earlier today.
--- a/opcodes/i386-dis-evex-prefix.h
+++ b/opcodes/i386-dis-evex-prefix.h
@@ -234,14 +234,14 @@
{ Bad_Opcode },
{ "vdpbf16p%XS", { XM, Vex, EXx }, 0 },
{ VEX_W_TABLE (VEX_W_0F3852) },
- { "vp4dpwssd", { XM, Vex, EXxmm }, 0 },
+ { "vp4dpws%XSd", { XM, Vex, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F3853 */
{
{ Bad_Opcode },
{ Bad_Opcode },
{ VEX_W_TABLE (VEX_W_0F3853) },
- { "vp4dpwssds", { XM, Vex, EXxmm }, 0 },
+ { "vp4dpws%XSds", { XM, Vex, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F3868 */
{
@@ -262,28 +262,28 @@
{ Bad_Opcode },
{ Bad_Opcode },
{ "vfmsub132p%XW", { XM, Vex, EXx, EXxEVexR }, 0 },
- { "v4fmaddps", { XM, Vex, Mxmm }, 0 },
+ { "v4fmaddp%XS", { XM, Vex, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F389B */
{
{ Bad_Opcode },
{ Bad_Opcode },
{ "vfmsub132s%XW", { XMScalar, VexScalar, EXdq, EXxEVexR }, 0 },
- { "v4fmaddss", { XMScalar, VexScalar, Mxmm }, 0 },
+ { "v4fmadds%XS", { XMScalar, VexScalar, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F38AA */
{
{ Bad_Opcode },
{ Bad_Opcode },
{ "vfmsub213p%XW", { XM, Vex, EXx, EXxEVexR }, 0 },
- { "v4fnmaddps", { XM, Vex, Mxmm }, 0 },
+ { "v4fnmaddp%XS", { XM, Vex, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F38AB */
{
{ Bad_Opcode },
{ Bad_Opcode },
{ "vfmsub213s%XW", { XMScalar, VexScalar, EXdq, EXxEVexR }, 0 },
- { "v4fnmaddss", { XMScalar, VexScalar, Mxmm }, 0 },
+ { "v4fnmadds%XS", { XMScalar, VexScalar, Mxmm }, 0 },
},
/* PREFIX_EVEX_0F3A08 */
{
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] x86: properly decode EVEX.W for AVX512_4{FMAPS,VNNIW} insns
2022-10-14 14:11 [PATCH] x86: properly decode EVEX.W for AVX512_4{FMAPS,VNNIW} insns Jan Beulich
@ 2022-10-14 17:29 ` H.J. Lu
0 siblings, 0 replies; 2+ messages in thread
From: H.J. Lu @ 2022-10-14 17:29 UTC (permalink / raw)
To: Jan Beulich; +Cc: Binutils
On Fri, Oct 14, 2022 at 7:11 AM Jan Beulich <jbeulich@suse.com> wrote:
>
> These require EVEX.W=0. Use %XS to facilitate the checking, even if for
> the AVX512_4VNNIW ones this is kind of an abuse (as 's' there stands for
> "signed", not "single").
>
> While there also correct the 3rd operand for the AVX512_4VNNIW entries:
> Only the memory form is allowed (just like for AVX512_4FMAPS, where the
> correct type is already in use).
> ---
> This goes on top of "x86: fold AVX512-VNNI disassembler entries with
> AVX-VNNI ones", submitted earlier today.
>
> --- a/opcodes/i386-dis-evex-prefix.h
> +++ b/opcodes/i386-dis-evex-prefix.h
> @@ -234,14 +234,14 @@
> { Bad_Opcode },
> { "vdpbf16p%XS", { XM, Vex, EXx }, 0 },
> { VEX_W_TABLE (VEX_W_0F3852) },
> - { "vp4dpwssd", { XM, Vex, EXxmm }, 0 },
> + { "vp4dpws%XSd", { XM, Vex, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F3853 */
> {
> { Bad_Opcode },
> { Bad_Opcode },
> { VEX_W_TABLE (VEX_W_0F3853) },
> - { "vp4dpwssds", { XM, Vex, EXxmm }, 0 },
> + { "vp4dpws%XSds", { XM, Vex, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F3868 */
> {
> @@ -262,28 +262,28 @@
> { Bad_Opcode },
> { Bad_Opcode },
> { "vfmsub132p%XW", { XM, Vex, EXx, EXxEVexR }, 0 },
> - { "v4fmaddps", { XM, Vex, Mxmm }, 0 },
> + { "v4fmaddp%XS", { XM, Vex, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F389B */
> {
> { Bad_Opcode },
> { Bad_Opcode },
> { "vfmsub132s%XW", { XMScalar, VexScalar, EXdq, EXxEVexR }, 0 },
> - { "v4fmaddss", { XMScalar, VexScalar, Mxmm }, 0 },
> + { "v4fmadds%XS", { XMScalar, VexScalar, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F38AA */
> {
> { Bad_Opcode },
> { Bad_Opcode },
> { "vfmsub213p%XW", { XM, Vex, EXx, EXxEVexR }, 0 },
> - { "v4fnmaddps", { XM, Vex, Mxmm }, 0 },
> + { "v4fnmaddp%XS", { XM, Vex, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F38AB */
> {
> { Bad_Opcode },
> { Bad_Opcode },
> { "vfmsub213s%XW", { XMScalar, VexScalar, EXdq, EXxEVexR }, 0 },
> - { "v4fnmaddss", { XMScalar, VexScalar, Mxmm }, 0 },
> + { "v4fnmadds%XS", { XMScalar, VexScalar, Mxmm }, 0 },
> },
> /* PREFIX_EVEX_0F3A08 */
> {
OK.
Thanks.
--
H.J.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-10-14 14:11 [PATCH] x86: properly decode EVEX.W for AVX512_4{FMAPS,VNNIW} insns Jan Beulich
2022-10-14 17:29 ` H.J. Lu
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