Add support for Intel TDX instructions.

gas/

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

opcodes/

	* i386-dis.c (enum): Add PREFIX_0F01_REG_1_RM_5,
	PREFIX_0F01_REG_1_RM_6, PREFIX_0F01_REG_1_RM_7,
	X86_64_0F01_REG_1_RM_5_P_2, X86_64_0F01_REG_1_RM_6_P_2,
	X86_64_0F01_REG_1_RM_7_P_2.
	(prefix_table): Likewise.
	(x86_64_table): Likewise.
	(rm_table): Likewise.
	* i386-gen.c (cpu_flag_init): Add CPU_TDX_FLAGS
	and CPU_ANY_TDX_FLAGS.
	(cpu_flags): Add CpuTDX.
	* i386-opc.h (enum): Add CpuTDX.
	(i386_cpu_flags): Add cputdx.
	* i386-opc.tbl: Add TDX insns.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.

9 files changed, 62 insertions, 1 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index b713493..02e6300 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,4 +1,16 @@
-20200-09-17 Cooper Qu  <cooper.qu@linux.alibaba.com>
+2020-09-24  Lili Cui  <lili.cui@intel.com>
+
+	* NEWS: Add TDX.
+	* config/tc-i386.c (cpu_arch): Add .tdx.
+	(cpu_noarch): Likewise.
+	* doc/c-i386.texi: Document tdx.
+	* testsuite/gas/i386/i386.exp: Run tdx tests.
+	* testsuite/gas/i386/tdx.d: Likewise.
+	* testsuite/gas/i386/tdx.s: Likewise.
+	* testsuite/gas/i386/x86-64-tdx.d: Likewise.
+	* testsuite/gas/i386/x86-64-tdx.s: Likewise.
+
+2020-09-17 Cooper Qu  <cooper.qu@linux.alibaba.com>
 
 	* config/tc-csky.c (parse_type_ctrlreg): Use function
 	csky_get_control_regno to operand.
diff --git a/gas/NEWS b/gas/NEWS
index c1fffc61..7ae5850 100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -1,4 +1,5 @@
 -*- text -*-
+* Add support for Intel TDX instructions.
 
 * Add support for Intel Key Locker instructions.
 
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 60b2fea..4891c45a 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1220,6 +1220,8 @@ static const arch_entry cpu_arch[] =
     CPU_AVX512_BF16_FLAGS, 0 },
   { STRING_COMMA_LEN (".avx512_vp2intersect"), PROCESSOR_UNKNOWN,
     CPU_AVX512_VP2INTERSECT_FLAGS, 0 },
+  { STRING_COMMA_LEN (".tdx"), PROCESSOR_UNKNOWN,
+    CPU_TDX_FLAGS, 0 },
   { STRING_COMMA_LEN (".enqcmd"), PROCESSOR_UNKNOWN,
     CPU_ENQCMD_FLAGS, 0 },
   { STRING_COMMA_LEN (".serialize"), PROCESSOR_UNKNOWN,
@@ -1282,6 +1284,7 @@ static const noarch_entry cpu_noarch[] =
   { STRING_COMMA_LEN ("noavx512_bf16"), CPU_ANY_AVX512_BF16_FLAGS },
   { STRING_COMMA_LEN ("noavx512_vp2intersect"),
     CPU_ANY_AVX512_VP2INTERSECT_FLAGS },
+  { STRING_COMMA_LEN ("notdx"), CPU_ANY_TDX_FLAGS },
   { STRING_COMMA_LEN ("noenqcmd"), CPU_ANY_ENQCMD_FLAGS },
   { STRING_COMMA_LEN ("noserialize"), CPU_ANY_SERIALIZE_FLAGS },
   { STRING_COMMA_LEN ("notsxldtrk"), CPU_ANY_TSXLDTRK_FLAGS },
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index 2bb0955..776fed8 100644
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -209,6 +209,7 @@ accept various extension mnemonics.  For example,
 @code{avx512_vnni},
 @code{avx512_bitalg},
 @code{avx512_vp2intersect},
+@code{tdx},
 @code{avx512_bf16},
 @code{noavx512f},
 @code{noavx512cd},
@@ -226,6 +227,7 @@ accept various extension mnemonics.  For example,
 @code{noavx512_vnni},
 @code{noavx512_bitalg},
 @code{noavx512_vp2intersect},
+@code{notdx},
 @code{noavx512_bf16},
 @code{noenqcmd},
 @code{noserialize},
@@ -1503,6 +1505,7 @@ supported on the CPU specified.  The choices for @var{cpu_type} are:
 @item @samp{.avx512vbmi} @tab @samp{.avx512_4fmaps} @tab @samp{.avx512_4vnniw}
 @item @samp{.avx512_vpopcntdq} @tab @samp{.avx512_vbmi2} @tab @samp{.avx512_vnni}
 @item @samp{.avx512_bitalg} @tab @samp{.avx512_bf16} @tab @samp{.avx512_vp2intersect}
+@item @samp{.tdx}
 @item @samp{.clwb} @tab @samp{.rdpid} @tab @samp{.ptwrite} @tab @item @samp{.ibt}
 @item @samp{.wbnoinvd} @tab @samp{.pconfig} @tab @samp{.waitpkg} @tab @samp{.cldemote}
 @item @samp{.shstk} @tab @samp{.gfni} @tab @samp{.vaes} @tab @samp{.vpclmulqdq}
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index d34fed2..8d77c9f 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -489,6 +489,7 @@ if [gas_32_check] then {
     run_dump_test "enqcmd-intel"
     run_list_test "enqcmd-inval"
     run_dump_test "serialize"
+    run_dump_test "tdx"
     run_dump_test "tsxldtrk"
     run_dump_test "vp2intersect"
     run_dump_test "vp2intersect-intel"
@@ -1097,6 +1098,7 @@ if [gas_64_check] then {
     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-tdx"
     run_dump_test "x86-64-tsxldtrk"
     run_dump_test "x86-64-vp2intersect"
     run_dump_test "x86-64-vp2intersect-intel"
diff --git a/gas/testsuite/gas/i386/tdx.d b/gas/testsuite/gas/i386/tdx.d
new file mode 100644
index 0000000..35263be
--- /dev/null
+++ b/gas/testsuite/gas/i386/tdx.d
@@ -0,0 +1,12 @@
+#as:
+#objdump: -dw
+#name: TDX insns
+#source: tdx.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:	66 0f 01 cc +	tdcall *
+#pass
diff --git a/gas/testsuite/gas/i386/tdx.s b/gas/testsuite/gas/i386/tdx.s
new file mode 100644
index 0000000..6097fe3
--- /dev/null
+++ b/gas/testsuite/gas/i386/tdx.s
@@ -0,0 +1,5 @@
+# Check TDX instructions.
+
+	.text
+_start:
+	tdcall
diff --git a/gas/testsuite/gas/i386/x86-64-tdx.d b/gas/testsuite/gas/i386/x86-64-tdx.d
new file mode 100644
index 0000000..ea3e83c
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-tdx.d
@@ -0,0 +1,15 @@
+#as:
+#objdump: -dw
+#name: x86_64 TDX insns
+#source: x86-64-tdx.s
+
+.*: +file format .*
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:	66 0f 01 cc +	tdcall *
+[ 	]*[a-f0-9]+:	66 0f 01 cd +	seamret *
+[ 	]*[a-f0-9]+:	66 0f 01 ce +	seamops *
+[ 	]*[a-f0-9]+:	66 0f 01 cf +	seamcall *
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-tdx.s b/gas/testsuite/gas/i386/x86-64-tdx.s
new file mode 100644
index 0000000..1cf4035
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-tdx.s
@@ -0,0 +1,8 @@
+# Check TDX instructions.
+
+	.text
+_start:
+	tdcall
+	seamret
+	seamops
+	seamcall