Add support for intel SERIALIZE instruction

gas/

	* config/tc-i386.c (cpu_arch): Add .serialize.
	(cpu_noarch): Likewise.
	* doc/c-i386.texi: Document serialize.
	* testsuite/gas/i386/i386.exp: Run serialize tests
	* testsuite/gas/i386/serialize.d: Likewise.
	* testsuite/gas/i386/x86-64-serialize.d: Likewise.
	* testsuite/gas/i386/serialize.s: Likewise.

opcodes/

	* i386-dis.c (prefix_table): New instructions serialize.
	* i386-gen.c (cpu_flag_init): Add CPU_SERIALIZE_FLAGS,
	CPU_ANY_SERIALIZE_FLAGS.
	(cpu_flags): Add CpuSERIALIZE.
	* i386-opc.h (enum): Add CpuSERIALIZE.
	(i386_cpu_flags): Add cpuserialize.
	* i386-opc.tbl: Add SERIALIZE insns.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.

7 files changed, 46 insertions, 0 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 93e44c5..ca26b79 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,13 @@
+2020-04-02  Lili Cui  <lili.cui@intel.com>
+
+	* config/tc-i386.c (cpu_arch): Add .serialize.
+	(cpu_noarch): Likewise.
+	* doc/c-i386.texi: Document serialize.
+	* testsuite/gas/i386/i386.exp: Run serialize tests
+	* testsuite/gas/i386/serialize.d: Likewise.
+	* testsuite/gas/i386/x86-64-serialize.d: Likewise.
+	* testsuite/gas/i386/serialize.s: Likewise.
+
 2020-04-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* testsuite/gas/elf/section12a.d: Use notarget instead of xfail.
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 09063f7..d67532c 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1206,6 +1206,8 @@ static const arch_entry cpu_arch[] =
     CPU_AVX512_VP2INTERSECT_FLAGS, 0 },
   { STRING_COMMA_LEN (".enqcmd"), PROCESSOR_UNKNOWN,
     CPU_ENQCMD_FLAGS, 0 },
+  { STRING_COMMA_LEN (".serialize"), PROCESSOR_UNKNOWN,
+    CPU_SERIALIZE_FLAGS, 0 },
   { STRING_COMMA_LEN (".rdpru"), PROCESSOR_UNKNOWN,
     CPU_RDPRU_FLAGS, 0 },
   { STRING_COMMA_LEN (".mcommit"), PROCESSOR_UNKNOWN,
@@ -1255,6 +1257,7 @@ static const noarch_entry cpu_noarch[] =
   { STRING_COMMA_LEN ("noavx512_bf16"), CPU_ANY_AVX512_BF16_FLAGS },
   { STRING_COMMA_LEN ("noavx512_vp2intersect"), CPU_ANY_SHSTK_FLAGS },
   { STRING_COMMA_LEN ("noenqcmd"), CPU_ANY_ENQCMD_FLAGS },
+  { STRING_COMMA_LEN ("noserialize"), CPU_ANY_SERIALIZE_FLAGS },
 };
 
 #ifdef I386COFF
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index 1dd99f9..d42148e 100644
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -187,6 +187,7 @@ accept various extension mnemonics.  For example,
 @code{movdiri},
 @code{movdir64b},
 @code{enqcmd},
+@code{serialize},
 @code{avx512f},
 @code{avx512cd},
 @code{avx512er},
@@ -221,6 +222,7 @@ accept various extension mnemonics.  For example,
 @code{noavx512_vp2intersect},
 @code{noavx512_bf16},
 @code{noenqcmd},
+@code{noserialize},
 @code{vmx},
 @code{vmfunc},
 @code{smx},
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index f21131e..7961bb1 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -476,6 +476,7 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "enqcmd"
     run_dump_test "enqcmd-intel"
     run_list_test "enqcmd-inval"
+    run_dump_test "serialize"
     run_dump_test "vp2intersect"
     run_dump_test "vp2intersect-intel"
     run_list_test "vp2intersect-inval-bcast"
@@ -1052,6 +1053,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-enqcmd"
     run_dump_test "x86-64-enqcmd-intel"
     run_list_test "x86-64-enqcmd-inval"
+    run_dump_test "x86-64-serialize"
     run_dump_test "x86-64-vp2intersect"
     run_dump_test "x86-64-vp2intersect-intel"
     run_list_test "x86-64-vp2intersect-inval-bcast"
diff --git a/gas/testsuite/gas/i386/serialize.d b/gas/testsuite/gas/i386/serialize.d
new file mode 100644
index 0000000..ba50158
--- /dev/null
+++ b/gas/testsuite/gas/i386/serialize.d
@@ -0,0 +1,12 @@
+#as:
+#objdump: -dw
+#name: SERIALIZE insns
+#source: serialize.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:	0f 01 e8 +	serialize *
+#pass
diff --git a/gas/testsuite/gas/i386/serialize.s b/gas/testsuite/gas/i386/serialize.s
new file mode 100644
index 0000000..80f079d
--- /dev/null
+++ b/gas/testsuite/gas/i386/serialize.s
@@ -0,0 +1,5 @@
+# Check SERIALIZE instructions.
+
+	.text
+_start:
+	serialize
diff --git a/gas/testsuite/gas/i386/x86-64-serialize.d b/gas/testsuite/gas/i386/x86-64-serialize.d
new file mode 100644
index 0000000..79ac814
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-serialize.d
@@ -0,0 +1,12 @@
+#as:
+#objdump: -dw
+#name: x86_64 SERIALIZE insns
+#source: serialize.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:	0f 01 e8 +	serialize *
+#pass