Enable Intel WAITPKG instructions.

Intel has disclosed a set of new instructions for Tremont processor.
The spec is
https://software.intel.com/en-us/intel-architecture-instruction-set-extensions-programming-reference
This patch enables Intel WAITPKG instructions.

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

opcodes/
	* i386-dis.c (enum): Add PREFIX_MOD_0_0FAE_REG_6,
	PREFIX_MOD_1_0FAE_REG_6.
	(va_mode): New.
	(OP_E_register): Use va_mode.
	* i386-dis-evex.h (prefix_table):
	New instructions (see prefixes above).
	* i386-gen.c (cpu_flag_init): Add WAITPKG.
	(cpu_flags): Likewise.
	* i386-opc.h (enum): Likewise.
	(i386_cpu_flags): Likewise.
	* i386-opc.tbl: Add umonitor, umwait, tpause.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Likewise.

10 files changed, 110 insertions, 1 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 894ad7d..d308c04 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,16 @@
+2018-04-11  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>
+
+	* config/tc-i386.c (cpu_arch): Add WAITPKG.
+	(cpu_noarch): Likewise.
+	* doc/c-i386.texi: Document WAITPKG.
+	* i386/i386.exp: Run WAITPKG tests.
+	* testsuite/gas/i386/waitpkg-intel.d: New test.
+	* testsuite/gas/i386/waitpkg.d: Likewise.
+	* testsuite/gas/i386/waitpkg.s: Likewise.
+	* testsuite/gas/i386/x86-64-waitpkg-intel.d: Likewise.
+	* testsuite/gas/i386/x86-64-waitpkg.d: Likewise.
+	* testsuite/gas/i386/x86-64-waitpkg.s: Likewise.
+
 2018-04-11  Alan Modra  <amodra@gmail.com>
 
 	* config/aout_gnu.h: Delete.
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index dd7660d..028e062 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -1026,6 +1026,8 @@ static const arch_entry cpu_arch[] =
     CPU_WBNOINVD_FLAGS, 0 },
   { STRING_COMMA_LEN (".pconfig"), PROCESSOR_UNKNOWN,
     CPU_PCONFIG_FLAGS, 0 },
+  { STRING_COMMA_LEN (".waitpkg"), PROCESSOR_UNKNOWN,
+    CPU_WAITPKG_FLAGS, 0 },
 };
 
 static const noarch_entry cpu_noarch[] =
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index 965e0ff..a6e9d04 100644
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -231,6 +231,7 @@ accept various extension mnemonics.  For example,
 @code{clzero},
 @code{wbnoinvd},
 @code{pconfig},
+@code{waitpkg},
 @code{lwp},
 @code{fma4},
 @code{xop},
@@ -1272,7 +1273,7 @@ supported on the CPU specified.  The choices for @var{cpu_type} are:
 @item @samp{.avx512_vpopcntdq} @tab @samp{.avx512_vbmi2} @tab @samp{.avx512_vnni}
 @item @samp{.avx512_bitalg}
 @item @samp{.clwb} @tab @samp{.rdpid} @tab @samp{.ptwrite} @tab @item @samp{.ibt}
-@item @samp{.wbnoinvd} @tab @samp{.pconfig}
+@item @samp{.wbnoinvd} @tab @samp{.pconfig} @tab @samp{.waitpkg}
 @item @samp{.shstk} @tab @samp{.gfni} @tab @samp{.vaes} @tab @samp{.vpclmulqdq}
 @item @samp{.3dnow} @tab @samp{.3dnowa} @tab @samp{.sse4a} @tab @samp{.sse5}
 @item @samp{.syscall} @tab @samp{.rdtscp} @tab @samp{.svme} @tab @samp{.abm}
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 035d510..93e3082 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -422,6 +422,8 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "wbnoinvd-intel"
     run_dump_test "pconfig"
     run_dump_test "pconfig-intel"
+    run_dump_test "waitpkg"
+    run_dump_test "waitpkg-intel"
     run_list_test "avx512vl-1" "-al"
     run_list_test "avx512vl-2" "-al"
     run_list_test "avx512vl-plain" "-al"
@@ -910,6 +912,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-wbnoinvd-intel"
     run_dump_test "x86-64-pconfig"
     run_dump_test "x86-64-pconfig-intel"
+    run_dump_test "x86-64-waitpkg"
+    run_dump_test "x86-64-waitpkg-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/waitpkg-intel.d b/gas/testsuite/gas/i386/waitpkg-intel.d
new file mode 100644
index 0000000..7930f50
--- /dev/null
+++ b/gas/testsuite/gas/i386/waitpkg-intel.d
@@ -0,0 +1,16 @@
+#as:
+#objdump: -dw -Mintel
+#name: i386 WAITPKG insns (Intel disassembly)
+#source: waitpkg.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+00000000 <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f ae f0[ 	]*umonitor eax
+[ 	]*[a-f0-9]+:[ 	]*67 f3 0f ae f1[ 	]*umonitor cx
+[ 	]*[a-f0-9]+:[ 	]*f2 0f ae f1[ 	]*umwait ecx
+[ 	]*[a-f0-9]+:[ 	]*66 0f ae f1[ 	]*tpause ecx
+#pass
diff --git a/gas/testsuite/gas/i386/waitpkg.d b/gas/testsuite/gas/i386/waitpkg.d
new file mode 100644
index 0000000..ec3b9ea
--- /dev/null
+++ b/gas/testsuite/gas/i386/waitpkg.d
@@ -0,0 +1,16 @@
+#as:
+#objdump: -dw
+#name: i386 WAITPKG insns
+#source: waitpkg.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+00000000 <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f ae f0[ 	]*umonitor %eax
+[ 	]*[a-f0-9]+:[ 	]*67 f3 0f ae f1[ 	]*umonitor %cx
+[ 	]*[a-f0-9]+:[ 	]*f2 0f ae f1[ 	]*umwait %ecx
+[ 	]*[a-f0-9]+:[ 	]*66 0f ae f1[ 	]*tpause %ecx
+#pass
diff --git a/gas/testsuite/gas/i386/waitpkg.s b/gas/testsuite/gas/i386/waitpkg.s
new file mode 100644
index 0000000..f18229e
--- /dev/null
+++ b/gas/testsuite/gas/i386/waitpkg.s
@@ -0,0 +1,8 @@
+# Check 32bit WAITPKG instructions.
+
+	.text
+_start:
+	umonitor %eax
+	umonitor %cx
+	umwait %ecx
+	tpause %ecx
diff --git a/gas/testsuite/gas/i386/x86-64-waitpkg-intel.d b/gas/testsuite/gas/i386/x86-64-waitpkg-intel.d
new file mode 100644
index 0000000..e70be23
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-waitpkg-intel.d
@@ -0,0 +1,19 @@
+#as:
+#objdump: -dw -Mintel
+#name: x86_64 WAITPKG insns (Intel disassembly)
+#source: x86-64-waitpkg.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f ae f0[ 	]*umonitor rax
+[ 	]*[a-f0-9]+:[ 	]*f3 41 0f ae f2[ 	]*umonitor r10
+[ 	]*[a-f0-9]+:[ 	]*67 f3 41 0f ae f2[ 	]*umonitor r10d
+[ 	]*[a-f0-9]+:[ 	]*f2 0f ae f1[ 	]*umwait rcx
+[ 	]*[a-f0-9]+:[ 	]*f2 41 0f ae f2[ 	]*umwait r10
+[ 	]*[a-f0-9]+:[ 	]*66 0f ae f1[ 	]*tpause rcx
+[ 	]*[a-f0-9]+:[ 	]*66 41 0f ae f2[ 	]*tpause r10
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-waitpkg.d b/gas/testsuite/gas/i386/x86-64-waitpkg.d
new file mode 100644
index 0000000..0930aa2
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-waitpkg.d
@@ -0,0 +1,19 @@
+#as:
+#objdump: -dw
+#name: x86_64 WAITPKG insns
+#source: x86-64-waitpkg.s
+
+.*: +file format .*
+
+
+Disassembly of section \.text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f ae f0[ 	]*umonitor %rax
+[ 	]*[a-f0-9]+:[ 	]*f3 41 0f ae f2[ 	]*umonitor %r10
+[ 	]*[a-f0-9]+:[ 	]*67 f3 41 0f ae f2[ 	]*umonitor %r10d
+[ 	]*[a-f0-9]+:[ 	]*f2 0f ae f1[ 	]*umwait %rcx
+[ 	]*[a-f0-9]+:[ 	]*f2 41 0f ae f2[ 	]*umwait %r10
+[ 	]*[a-f0-9]+:[ 	]*66 0f ae f1[ 	]*tpause %rcx
+[ 	]*[a-f0-9]+:[ 	]*66 41 0f ae f2[ 	]*tpause %r10
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-waitpkg.s b/gas/testsuite/gas/i386/x86-64-waitpkg.s
new file mode 100644
index 0000000..7899c39
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-waitpkg.s
@@ -0,0 +1,11 @@
+# Check 64bit WAITPKG instructions.
+
+	.text
+_start:
+	umonitor %rax
+	umonitor %r10
+	umonitor %r10d
+	umwait %rcx
+	umwait %r10
+	tpause %rcx
+	tpause %r10