Hi all,
 
This patch is about to enable binutils support for Key Locker,
Key Locker provides a mechanism to encrypt and decrypt data with an AES key without having access
to the raw key value by converting AES keys into "handles", more details please refer to 
https://software.intel.com/content/www/us/en/develop/download/intel-key-locker-specification.html

Make check-gas is ok.

Enable support to Intel Key locker instructions.

gas/
	* config/tc-i386.c (cpu_arch): Add .kl and .wide_kl.
	(cpu_noarch): Likewise.
	* doc/c-i386.texi: Document kl and wide_kl.
	* testsuite/gas/i386/i386.exp: Run keylocker tests.
	* testsuite/gas/i386/keylocker-intel.d: New test.
	* testsuite/gas/i386/keylocker.d: Likewise.
	* testsuite/gas/i386/keylocker.s: Likewise.
	* testsuite/gas/i386/x86-64-keylocker-intel.d: Likewise.
	* testsuite/gas/i386/x86-64-keylocker.d: Likewise.
	* testsuite/gas/i386/x86-64-keylocker.s: Likewise.

opcodes/
	* i386-dis.c (enum): Add REG_0F38D8_PREFIX_1,
	MOD_0F38FA_PREFIX_1, MOD_0F38FB_PREFIX_1,
	MOD_0F38DC_PREFIX_1, MOD_0F38DD_PREFIX_1,
	MOD_0F38DE_PREFIX_1, MOD_0F38DF_PREFIX_1,
	PREFIX_0F38D8, PREFIX_0F38FA, PREFIX_0F38FB.
	(reg_table): New instructions (see prefixes above).
	(prefix_table): Likewise.
	(three_byte_table): Likewise.
	(mod_table): Likewise
	* i386-gen.c (cpu_flag_init): Add CPU_KL_FLAGS, CPU_WIDE_KL_FLAGS,
	CPU_ANY_KL_FLAGS and CPU_ANY_WIDE_KL_FLAGS.
	(cpu_flags): Likewise.
	(operand_type_init): Likewise.
	* i386-opc.h (enum): Add CpuKL and CpuWIDE_KL.
	(i386_cpu_flags): Add cpukl and cpuwide_kl.
	* i386-opc.tbl: Add KL and WIDE_KL insns.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.
---
 gas/config/tc-i386.c                          |   6 +
 gas/doc/c-i386.texi                           |   5 +
 gas/testsuite/gas/i386/i386.exp               |   4 +
 gas/testsuite/gas/i386/keylocker-intel.d      |  34 ++++++
 gas/testsuite/gas/i386/keylocker.d            |  34 ++++++
 gas/testsuite/gas/i386/keylocker.s            |  33 ++++++
 .../gas/i386/x86-64-keylocker-intel.d         |  34 ++++++
 gas/testsuite/gas/i386/x86-64-keylocker.d     |  34 ++++++
 gas/testsuite/gas/i386/x86-64-keylocker.s     |  33 ++++++
 opcodes/i386-dis.c                            | 107 ++++++++++++++++--
 opcodes/i386-gen.c                            |  10 ++
 opcodes/i386-opc.h                            |   6 +
 opcodes/i386-opc.tbl                          |  16 +++
 13 files changed, 349 insertions(+), 7 deletions(-)
 create mode 100644 gas/testsuite/gas/i386/keylocker-intel.d
 create mode 100644 gas/testsuite/gas/i386/keylocker.d
 create mode 100644 gas/testsuite/gas/i386/keylocker.s
 create mode 100644 gas/testsuite/gas/i386/x86-64-keylocker-intel.d
 create mode 100644 gas/testsuite/gas/i386/x86-64-keylocker.d
 create mode 100644 gas/testsuite/gas/i386/x86-64-keylocker.s

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index d237352fbe..be567e59f7 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1232,6 +1232,10 @@ static const arch_entry cpu_arch[] =
     CPU_SEV_ES_FLAGS, 0 },
   { STRING_COMMA_LEN (".tsxldtrk"), PROCESSOR_UNKNOWN,
     CPU_TSXLDTRK_FLAGS, 0 },
+  { STRING_COMMA_LEN (".kl"), PROCESSOR_UNKNOWN,
+    CPU_KL_FLAGS, 0 },
+  { STRING_COMMA_LEN (".widekl"), PROCESSOR_UNKNOWN,
+    CPU_WIDEKL_FLAGS, 0 },
 };
 
 static const noarch_entry cpu_noarch[] =
@@ -1281,6 +1285,8 @@ static const noarch_entry cpu_noarch[] =
   { STRING_COMMA_LEN ("noenqcmd"), CPU_ANY_ENQCMD_FLAGS },
   { STRING_COMMA_LEN ("noserialize"), CPU_ANY_SERIALIZE_FLAGS },
   { STRING_COMMA_LEN ("notsxldtrk"), CPU_ANY_TSXLDTRK_FLAGS },
+  { STRING_COMMA_LEN ("nokl"), CPU_ANY_KL_FLAGS },
+  { STRING_COMMA_LEN ("nowidekl"), CPU_ANY_WIDEKL_FLAGS },
 };
 
 #ifdef I386COFF
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index 64a563aacb..2bb0955b45 100644
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -189,6 +189,10 @@ accept various extension mnemonics.  For example,
 @code{enqcmd},
 @code{serialize},
 @code{tsxldtrk},
+@code{kl},
+@code{nokl},
+@code{widekl},
+@code{nowidekl},
 @code{avx512f},
 @code{avx512cd},
 @code{avx512er},
@@ -1504,6 +1508,7 @@ supported on the CPU specified.  The choices for @var{cpu_type} are:
 @item @samp{.shstk} @tab @samp{.gfni} @tab @samp{.vaes} @tab @samp{.vpclmulqdq}
 @item @samp{.movdiri} @tab @samp{.movdir64b} @tab @samp{.enqcmd} @tab @samp{.tsxldtrk}
 @item @samp{.amx_int8} @tab @samp{.amx_bf16} @tab @samp{.amx_tile}
+@item @samp{.kl} @tab @samp{.widekl}
 @item @samp{.3dnow} @tab @samp{.3dnowa} @tab @samp{.sse4a} @tab @samp{.sse5}
 @item @samp{.syscall} @tab @samp{.rdtscp} @tab @samp{.svme}
 @item @samp{.lwp} @tab @samp{.fma4} @tab @samp{.xop} @tab @samp{.cx16}
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 132e5d7834..96c03a04f4 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -493,6 +493,8 @@ if [gas_32_check] then {
     run_dump_test "vp2intersect"
     run_dump_test "vp2intersect-intel"
     run_list_test "vp2intersect-inval-bcast"
+    run_dump_test "keylocker"
+    run_dump_test "keylocker-intel"
     run_list_test "avx512vl-1" "-al"
     run_list_test "avx512vl-2" "-al"
     run_list_test "avx512vl-ambig"
@@ -1098,6 +1100,8 @@ if [gas_64_check] then {
     run_dump_test "x86-64-vp2intersect"
     run_dump_test "x86-64-vp2intersect-intel"
     run_list_test "x86-64-vp2intersect-inval-bcast"
+    run_dump_test "x86-64-keylocker"
+    run_dump_test "x86-64-keylocker-intel"
     run_dump_test "x86-64-fence-as-lock-add-yes"
     run_dump_test "x86-64-fence-as-lock-add-no"
     run_dump_test "x86-64-pr20141"
diff --git a/gas/testsuite/gas/i386/keylocker-intel.d b/gas/testsuite/gas/i386/keylocker-intel.d
new file mode 100644
index 0000000000..50061c239a
--- /dev/null
+++ b/gas/testsuite/gas/i386/keylocker-intel.d
@@ -0,0 +1,34 @@
+#as:
+#objdump: -dw -Mintel
+#name: i386 KEYLOCKER insns (Intel disassembly)
+#source: keylocker.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+00000000 <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey xmm6,xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey xmm6,xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl xmm2,\[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl \[edx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl \[edx\+0x7e\]
+#pass
diff --git a/gas/testsuite/gas/i386/keylocker.d b/gas/testsuite/gas/i386/keylocker.d
new file mode 100644
index 0000000000..f372a81716
--- /dev/null
+++ b/gas/testsuite/gas/i386/keylocker.d
@@ -0,0 +1,34 @@
+#as:
+#objdump: -dw
+#name: i386 KEYLOCKER insns
+#source: keylocker.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+00000000 <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey %xmm2,%xmm6
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey %xmm2,%xmm6
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl 0x7e\(%edx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl 0x7e\(%edx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl 0x7e\(%edx\)
+#pass
diff --git a/gas/testsuite/gas/i386/keylocker.s b/gas/testsuite/gas/i386/keylocker.s
new file mode 100644
index 0000000000..3b8532c2bb
--- /dev/null
+++ b/gas/testsuite/gas/i386/keylocker.s
@@ -0,0 +1,33 @@
+# Check 32bit KEYLOCKER instructions
+
+	.text
+_start:
+	loadiwkey %xmm2, %xmm6
+	encodekey128 %eax, %edx
+	encodekey256 %eax, %edx
+
+	aesenc128kl 126(%edx), %xmm2
+	aesenc256kl 126(%edx), %xmm2
+	aesdec128kl 126(%edx), %xmm2
+	aesdec256kl 126(%edx), %xmm2
+
+	aesencwide128kl	126(%edx)
+	aesencwide256kl	126(%edx)
+	aesdecwide128kl	126(%edx)
+	aesdecwide256kl	126(%edx)
+
+	.intel_syntax noprefix
+
+	loadiwkey xmm6, xmm2
+	encodekey128 edx, eax
+	encodekey256 edx, eax
+
+	aesenc128kl xmm2, [edx+126]
+	aesenc256kl xmm2, [edx+126]
+	aesdec128kl xmm2, [edx+126]
+	aesdec256kl xmm2, [edx+126]
+
+	aesencwide128kl	[edx+126]
+	aesencwide256kl	[edx+126]
+	aesdecwide128kl	[edx+126]
+	aesdecwide256kl	[edx+126]
diff --git a/gas/testsuite/gas/i386/x86-64-keylocker-intel.d b/gas/testsuite/gas/i386/x86-64-keylocker-intel.d
new file mode 100644
index 0000000000..eb463eac7b
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-keylocker-intel.d
@@ -0,0 +1,34 @@
+#as:
+#objdump: -dw -Mintel
+#name: x86_64 KEYLOCKER insns (Intel disassembly)
+#source: x86-64-keylocker.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey xmm6,xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey xmm6,xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 edx,eax
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl xmm2,\[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl \[rdx\+0x7e\]
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl \[rdx\+0x7e\]
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-keylocker.d b/gas/testsuite/gas/i386/x86-64-keylocker.d
new file mode 100644
index 0000000000..a52714e3e3
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-keylocker.d
@@ -0,0 +1,34 @@
+#as:
+#objdump: -dw
+#name: x86_64 KEYLOCKER insns
+#source: x86-64-keylocker.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey %xmm2,%xmm6
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc f2[ 	]*loadiwkey %xmm2,%xmm6
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fa d0[ 	]*encodekey128 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 fb d0[ 	]*encodekey256 %eax,%edx
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dc 52 7e[ 	]*aesenc128kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 de 52 7e[ 	]*aesenc256kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 dd 52 7e[ 	]*aesdec128kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 df 52 7e[ 	]*aesdec256kl 0x7e\(%rdx\),%xmm2
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 42 7e[ 	]*aesencwide128kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 52 7e[ 	]*aesencwide256kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 4a 7e[ 	]*aesdecwide128kl 0x7e\(%rdx\)
+[ 	]*[a-f0-9]+:[ 	]*f3 0f 38 d8 5a 7e[ 	]*aesdecwide256kl 0x7e\(%rdx\)
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-keylocker.s b/gas/testsuite/gas/i386/x86-64-keylocker.s
new file mode 100644
index 0000000000..d55fe03197
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-keylocker.s
@@ -0,0 +1,33 @@
+# Check 64bit AVX512VBMI2 instructions
+
+	.text
+_start:
+	loadiwkey %xmm2, %xmm6
+	encodekey128 %eax, %edx
+	encodekey256 %eax, %edx
+
+	aesenc128kl 126(%rdx), %xmm2
+	aesenc256kl 126(%rdx), %xmm2
+	aesdec128kl 126(%rdx), %xmm2
+	aesdec256kl 126(%rdx), %xmm2
+
+	aesencwide128kl	126(%rdx)
+	aesencwide256kl	126(%rdx)
+	aesdecwide128kl	126(%rdx)
+	aesdecwide256kl	126(%rdx)
+
+	.intel_syntax noprefix
+
+	loadiwkey xmm6, xmm2
+	encodekey128 edx, eax
+	encodekey256 edx, eax
+
+	aesenc128kl xmm2, [rdx+126]
+	aesenc256kl xmm2, [rdx+126]
+	aesdec128kl xmm2, [rdx+126]
+	aesdec256kl xmm2, [rdx+126]
+
+	aesencwide128kl	[rdx+126]
+	aesencwide256kl	[rdx+126]
+	aesdecwide128kl	[rdx+126]
+	aesdecwide256kl	[rdx+126]
diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c
index 6d803258ef..45e925f87b 100644
--- a/opcodes/i386-dis.c
+++ b/opcodes/i386-dis.c
@@ -691,6 +691,7 @@ enum
   REG_0F18,
   REG_0F1C_P_0_MOD_0,
   REG_0F1E_P_1_MOD_3,
+  REG_0F38D8_PREFIX_1,
   REG_0F71,
   REG_0F72,
   REG_0F73,
@@ -797,12 +798,18 @@ enum
   MOD_VEX_0F385E_X86_64_P_1_W_0,
   MOD_VEX_0F385E_X86_64_P_2_W_0,
   MOD_VEX_0F385E_X86_64_P_3_W_0,
+  MOD_0F38DC_PREFIX_1,
+  MOD_0F38DD_PREFIX_1,
+  MOD_0F38DE_PREFIX_1,
+  MOD_0F38DF_PREFIX_1,
   MOD_0F38F5,
   MOD_0F38F6_PREFIX_0,
   MOD_0F38F8_PREFIX_1,
   MOD_0F38F8_PREFIX_2,
   MOD_0F38F8_PREFIX_3,
   MOD_0F38F9,
+  MOD_0F38FA_PREFIX_1,
+  MOD_0F38FB_PREFIX_1,
   MOD_62_32BIT,
   MOD_C4_32BIT,
   MOD_C5_32BIT,
@@ -1011,10 +1018,17 @@ enum
   PREFIX_0FE7,
   PREFIX_0FF0,
   PREFIX_0FF7,
+  PREFIX_0F38D8,
+  PREFIX_0F38DC,
+  PREFIX_0F38DD,
+  PREFIX_0F38DE,
+  PREFIX_0F38DF,
   PREFIX_0F38F0,
   PREFIX_0F38F1,
   PREFIX_0F38F6,
   PREFIX_0F38F8,
+  PREFIX_0F38FA,
+  PREFIX_0F38FB,
   PREFIX_VEX_0F10,
   PREFIX_VEX_0F11,
   PREFIX_VEX_0F12,
@@ -2890,6 +2904,13 @@ static const struct dis386 reg_table[][8] = {
     { "nopQ",		{ Ev }, 0 },
     { RM_TABLE (RM_0F1E_P_1_MOD_3_REG_7) },
   },
+  /* REG_0F38D8_PREFIX_1 */
+  {
+    { "aesencwide128kl",	{ M }, 0 },
+    { "aesdecwide128kl",	{ M }, 0 },
+    { "aesencwide256kl",	{ M }, 0 },
+    { "aesdecwide256kl",	{ M }, 0 },
+  },
   /* REG_0F71 */
   {
     { Bad_Opcode },
@@ -3543,6 +3564,40 @@ static const struct dis386 prefix_table[][4] = {
     { "maskmovdqu", { XM, XS }, PREFIX_OPCODE },
   },
 
+  /* PREFIX_0F38D8 */
+  {
+    { Bad_Opcode },
+    { REG_TABLE (REG_0F38D8_PREFIX_1) },
+  },
+
+  /* PREFIX_0F38DC */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38DC_PREFIX_1) },
+    { "aesenc", { XM, EXx }, PREFIX_OPCODE },
+  },
+
+  /* PREFIX_0F38DD */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38DD_PREFIX_1) },
+    { "aesenclast", { XM, EXx }, PREFIX_OPCODE },
+  },
+
+  /* PREFIX_0F38DE */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38DE_PREFIX_1) },
+    { "aesdec", { XM, EXx }, PREFIX_OPCODE },
+  },
+
+  /* PREFIX_0F38DF */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38DF_PREFIX_1) },
+    { "aesdeclast", { XM, EXx }, PREFIX_OPCODE },
+  },
+
   /* PREFIX_0F38F0 */
   {
     { "movbeS",	{ Gv, Mv }, PREFIX_OPCODE },
@@ -3574,6 +3629,17 @@ static const struct dis386 prefix_table[][4] = {
     { MOD_TABLE (MOD_0F38F8_PREFIX_2) },
     { MOD_TABLE (MOD_0F38F8_PREFIX_3) },
   },
+  /* PREFIX_0F38FA */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38FA_PREFIX_1) },
+  },
+
+  /* PREFIX_0F38FB */
+  {
+    { Bad_Opcode },
+    { MOD_TABLE (MOD_0F38FB_PREFIX_1) },
+  },
 
   /* PREFIX_VEX_0F10 */
   {
@@ -4434,14 +4500,14 @@ static const struct dis386 three_byte_table[][256] = {
     { Bad_Opcode },
     { Bad_Opcode },
     /* d8 */
-    { Bad_Opcode },
+    { PREFIX_TABLE (PREFIX_0F38D8) },
     { Bad_Opcode },
     { Bad_Opcode },
     { "aesimc", { XM, EXx }, PREFIX_DATA },
-    { "aesenc", { XM, EXx }, PREFIX_DATA },
-    { "aesenclast", { XM, EXx }, PREFIX_DATA },
-    { "aesdec", { XM, EXx }, PREFIX_DATA },
-    { "aesdeclast", { XM, EXx }, PREFIX_DATA },
+    { PREFIX_TABLE (PREFIX_0F38DC) },
+    { PREFIX_TABLE (PREFIX_0F38DD) },
+    { PREFIX_TABLE (PREFIX_0F38DE) },
+    { PREFIX_TABLE (PREFIX_0F38DF) },
     /* e0 */
     { Bad_Opcode },
     { Bad_Opcode },
@@ -4472,8 +4538,8 @@ static const struct dis386 three_byte_table[][256] = {
     /* f8 */
     { PREFIX_TABLE (PREFIX_0F38F8) },
     { MOD_TABLE (MOD_0F38F9) },
-    { Bad_Opcode },
-    { Bad_Opcode },
+    { PREFIX_TABLE (PREFIX_0F38FA) },
+    { PREFIX_TABLE (PREFIX_0F38FB) },
     { Bad_Opcode },
     { Bad_Opcode },
     { Bad_Opcode },
@@ -8212,6 +8278,23 @@ static const struct dis386 mod_table[][2] = {
     { Bad_Opcode },
     { VEX_LEN_TABLE (VEX_LEN_0F385E_X86_64_P_3_W_0_M_0) },
   },
+  {
+    /* MOD_0F38DC_PREFIX_1 */
+    { "aesenc128kl",    { XM, M }, PREFIX_OPCODE },
+    { "loadiwkey",      { XM, EXx }, PREFIX_OPCODE },
+  },
+  {
+    /* MOD_0F38DD_PREFIX_1 */
+    { "aesdec128kl",    { XM, M }, PREFIX_OPCODE },
+  },
+  {
+    /* MOD_0F38DE_PREFIX_1 */
+    { "aesenc256kl",    { XM, M }, PREFIX_OPCODE },
+  },
+  {
+    /* MOD_0F38DF_PREFIX_1 */
+    { "aesdec256kl",    { XM, M }, PREFIX_OPCODE },
+  },
   {
     /* MOD_0F38F5 */
     { "wrussK",		{ M, Gdq }, PREFIX_DATA },
@@ -8236,6 +8319,16 @@ static const struct dis386 mod_table[][2] = {
     /* MOD_0F38F9 */
     { "movdiri",	{ Edq, Gdq }, PREFIX_OPCODE },
   },
+  {
+    /* MOD_0F38FA_PREFIX_1 */
+    { Bad_Opcode },
+    { "encodekey128", { Gd, Ed }, PREFIX_OPCODE },
+  },
+  {
+    /* MOD_0F38FB_PREFIX_1 */
+    { Bad_Opcode },
+    { "encodekey256", { Gd, Ed }, PREFIX_OPCODE },
+  },
   {
     /* MOD_62_32BIT */
     { "bound{S|}",	{ Gv, Ma }, 0 },
diff --git a/opcodes/i386-gen.c b/opcodes/i386-gen.c
index 3334155071..7c5c5badf9 100644
--- a/opcodes/i386-gen.c
+++ b/opcodes/i386-gen.c
@@ -321,6 +321,10 @@ static initializer cpu_flag_init[] =
     "CpuSEV_ES" },
   { "CPU_TSXLDTRK_FLAGS",
     "CpuTSXLDTRK"},
+  { "CPU_KL_FLAGS",
+    "CpuKL" },
+  { "CPU_WIDEKL_FLAGS",
+    "CpuWIDEKL" },
   { "CPU_ANY_X87_FLAGS",
     "CPU_ANY_287_FLAGS|Cpu8087" },
   { "CPU_ANY_287_FLAGS",
@@ -407,6 +411,10 @@ static initializer cpu_flag_init[] =
     "CpuAVX512_VP2INTERSECT" },
   { "CPU_ANY_TSXLDTRK_FLAGS",
     "CpuTSXLDTRK" },
+  { "CPU_ANY_KL_FLAGS",
+    "CpuKL|CpuWIDEKL" },
+  { "CPU_ANY_WIDEKL_FLAGS",
+    "CpuWIDEKL" },
 };
 
 static initializer operand_type_init[] =
@@ -636,6 +644,8 @@ static bitfield cpu_flags[] =
   BITFIELD (CpuMCOMMIT),
   BITFIELD (CpuSEV_ES),
   BITFIELD (CpuTSXLDTRK),
+  BITFIELD (CpuKL),
+  BITFIELD (CpuWIDEKL),
 #ifdef CpuUnused
   BITFIELD (CpuUnused),
 #endif
diff --git a/opcodes/i386-opc.h b/opcodes/i386-opc.h
index 09ee615db1..3861d104dc 100644
--- a/opcodes/i386-opc.h
+++ b/opcodes/i386-opc.h
@@ -259,6 +259,10 @@ enum
   CpuSEV_ES,
   /* TSXLDTRK instruction required */
   CpuTSXLDTRK,
+  /* KL instruction support required */
+  CpuKL,
+  /* WIDEKL instruction support required */
+  CpuWIDEKL,
   /* 64bit support required  */
   Cpu64,
   /* Not supported in the 64bit mode  */
@@ -396,6 +400,8 @@ typedef union i386_cpu_flags
       unsigned int cpumcommit:1;
       unsigned int cpusev_es:1;
       unsigned int cputsxldtrk:1;
+      unsigned int cpukl:1;
+      unsigned int cpuwidekl:1;
       unsigned int cpu64:1;
       unsigned int cpuno64:1;
 #ifdef CpuUnused
diff --git a/opcodes/i386-opc.tbl b/opcodes/i386-opc.tbl
index 181d0df1ce..f0112e8cf5 100644
--- a/opcodes/i386-opc.tbl
+++ b/opcodes/i386-opc.tbl
@@ -4117,3 +4117,19 @@ tilerelease, 0, 0x49c0, None, 2, CpuAMX_TILE|Cpu64, Vex128|VexOpcode=1|VexW0|No_
 tilezero, 1, 0xf249, None, 1, CpuAMX_TILE|Cpu64, Modrm|Vex128|VexOpcode=1|VexW0|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { RegTMM }
 
 // AMX instructions end.
+
+// KEYLOCKER instructions.
+
+loadiwkey, 2, 0xf30f38dc, None, 3, CpuKL, Load|Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { RegXMM, RegXMM }
+encodekey128, 2, 0xf30f38fa, None, 3, CpuKL, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { Reg32, Reg32 }
+encodekey256, 2, 0xf30f38fb, None, 3, CpuKL, Modrm|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|NoRex64, { Reg32, Reg32 }
+aesenc128kl, 2, 0xf30f38dc, None, 3, CpuKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex, RegXMM }
+aesdec128kl, 2, 0xf30f38dd, None, 3, CpuKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex, RegXMM }
+aesenc256kl, 2, 0xf30f38de, None, 3, CpuKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex, RegXMM }
+aesdec256kl, 2, 0xf30f38df, None, 3, CpuKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex, RegXMM }
+aesencwide128kl, 1, 0xf30f38d8, 0x0, 3, CpuWIDEKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex }
+aesdecwide128kl, 1, 0xf30f38d8, 0x1, 3, CpuWIDEKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex }
+aesencwide256kl, 1, 0xf30f38d8, 0x2, 3, CpuWIDEKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex }
+aesdecwide256kl, 1, 0xf30f38d8, 0x3, 3, CpuWIDEKL, Modrm|IgnoreSize|No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Unspecified|BaseIndex }
+
+// KEYLOCKER instructions end.
-- 
2.17.1

Thanks,
Lili.