Enable Intel RDPID instruction.

This patch enables Intel RDPID instruction described in Intel64 and
IA-32 Architectures Software Developer's Manual, April 2016.

gas/

	* config/tc-i386.c (cpu_arch): Add RDPID.
	* doc/c-i386.texi: Document RDPID.

gas/testsuite/

	* gas/i386/i386.exp: Run RDPID tests.
	* gas/i386/prefix.d: Adjust.
	* gas/i386/rdpid.s: New test.
	* gas/i386/rdpid.d: Ditto.
	* gas/i386/rdpid-intel.d: Ditto.
	* gas/i386/x86-64-rdpid.s: Ditto.
	* gas/i386/x86-64-rdpid.d: Ditto.
	* gas/i386/x86-64-rdpid-intel.d: Ditto.

opcodes/

	* i386-dis.c (prefix_table): Add RDPID instruction.
	* i386-gen.c (cpu_flag_init): Add RDPID flag.
	(cpu_flags): Add RDPID bitfield.
	* i386-opc.h (enum): Add RDPID element.
	(i386_cpu_flags): Add RDPID field.
	* i386-opc.tbl: Add RDPID instruction.
	* i386-init.h: Regenerate.
	* i386-tbl.h: Regenerate.

12 files changed, 96 insertions, 3 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 0012cd7..8e0fe65 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2016-05-10  Alexander Fomin  <alexander.fomin@intel.com>
+
+	* config/tc-i386.c (cpu_arch): Add RDPID.
+	* doc/c-i386.texi: Document RDPID.
+
 2016-05-10  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
 	* config/tc-arm.c (arm_adjust_symtab): Use ARM_SET_SYM_BRANCH_TYPE to
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index f382a73..2aeaf7b 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -961,6 +961,8 @@ static const arch_entry cpu_arch[] =
     CPU_MWAITX_FLAGS, 0, 0 },
   { STRING_COMMA_LEN (".ospke"), PROCESSOR_UNKNOWN,
     CPU_OSPKE_FLAGS, 0, 0 },
+  { STRING_COMMA_LEN (".rdpid"), PROCESSOR_UNKNOWN,
+    CPU_RDPID_FLAGS, 0, 0 },
 };
 
 #ifdef I386COFF
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi
index adbcb99..edd187b 100644
--- a/gas/doc/c-i386.texi
+++ b/gas/doc/c-i386.texi
@@ -153,6 +153,7 @@ accept various extension mnemonics.  For example,
 @code{smap},
 @code{mpx},
 @code{sha},
+@code{rdpid},
 @code{prefetchwt1},
 @code{clflushopt},
 @code{se1},
@@ -1173,7 +1174,7 @@ supported on the CPU specified.  The choices for @var{cpu_type} are:
 @item @samp{.3dnow} @tab @samp{.3dnowa} @tab @samp{.sse4a} @tab @samp{.sse5}
 @item @samp{.syscall} @tab @samp{.rdtscp} @tab @samp{.svme} @tab @samp{.abm}
 @item @samp{.lwp} @tab @samp{.fma4} @tab @samp{.xop} @tab @samp{.cx16}
-@item @samp{.padlock} @tab @samp{.clzero} @tab @samp{.mwaitx}
+@item @samp{.padlock} @tab @samp{.clzero} @tab @samp{.mwaitx} @tab @samp{.rdpid}
 @end multitable
 
 Apart from the warning, there are only two other effects on
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
new file mode 100644
index 0000000..b3a95ff
--- /dev/null
+++ b/gas/testsuite/ChangeLog
@@ -0,0 +1,25 @@
+2016-05-10  Alexander Fomin  <alexander.fomin@intel.com>
+
+	* gas/i386/i386.exp: Run RDPID tests.
+	* gas/i386/prefix.d: Adjust.
+	* gas/i386/rdpid.s: New test.
+	* gas/i386/rdpid.d: Ditto.
+	* gas/i386/rdpid-intel.d: Ditto.
+	* gas/i386/x86-64-rdpid.s: Ditto.
+	* gas/i386/x86-64-rdpid.d: Ditto.
+	* gas/i386/x86-64-rdpid-intel.d: Ditto.
+
+For older changes see ChangeLog-2015
+
+Copyright (C) 2016 Free Software Foundation, Inc.
+
+Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.
+
+Local Variables:
+mode: change-log
+left-margin: 8
+fill-column: 74
+version-control: never
+End:
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 9c4fdea..df1518b 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -346,6 +346,8 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
     run_dump_test "mwaitx-bdver4"
     run_list_test "mwaitx-reg"
     run_dump_test "ospke"
+    run_dump_test "rdpid"
+    run_dump_test "rdpid-intel"
 
     # These tests require support for 8 and 16 bit relocs,
     # so we only run them for ELF and COFF targets.
@@ -737,6 +739,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
     run_dump_test "x86-64-mwaitx-bdver4"
     run_list_test "x86-64-mwaitx-reg"
     run_dump_test "x86-64-ospke"
+    run_dump_test "x86-64-rdpid"
+    run_dump_test "x86-64-rdpid-intel"
     run_dump_test "x86-64-fence-as-lock-add-yes"
     run_dump_test "x86-64-fence-as-lock-add-no"
 
diff --git a/gas/testsuite/gas/i386/prefix.d b/gas/testsuite/gas/i386/prefix.d
index 7afb0c1..8dd200b 100644
--- a/gas/testsuite/gas/i386/prefix.d
+++ b/gas/testsuite/gas/i386/prefix.d
@@ -63,8 +63,7 @@ Disassembly of section .text:
 [ 	]*[a-f0-9]+:	f3 f0 66 3e 36 90    	lock data16 ds ss pause 
 [ 	]*[a-f0-9]+:	f3 f2 67 3e 36 90    	repz repnz addr16 ds ss nop
 [ 	]*[a-f0-9]+:	f3 67 f2 66 3e 36 90 	repz addr16 repnz ds ss xchg %ax,%ax
-[ 	]*[a-f0-9]+:	f3 0f c7             	\(bad\)  
-[ 	]*[a-f0-9]+:	f8                   	clc    
+[ 	]*[a-f0-9]+:	f3 0f c7 f8          	rdpid  %eax
 [ 	]*[a-f0-9]+:	90                   	nop
 [ 	]*[a-f0-9]+:	f3 0f c7             	\(bad\)  
 [ 	]*[a-f0-9]+:	f0 90                	lock nop
diff --git a/gas/testsuite/gas/i386/rdpid-intel.d b/gas/testsuite/gas/i386/rdpid-intel.d
new file mode 100644
index 0000000..f733b17
--- /dev/null
+++ b/gas/testsuite/gas/i386/rdpid-intel.d
@@ -0,0 +1,11 @@
+#objdump: -dwMintel
+#name: i386 RDPID (Intel disassembly)
+#source: rdpid.s
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f c7 f8[ 	]*rdpid  eax
+#pass
diff --git a/gas/testsuite/gas/i386/rdpid.d b/gas/testsuite/gas/i386/rdpid.d
new file mode 100644
index 0000000..ef67c84
--- /dev/null
+++ b/gas/testsuite/gas/i386/rdpid.d
@@ -0,0 +1,11 @@
+#objdump: -dw
+#name: i386 RDPID insns
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f c7 f8[ 	]*rdpid  %eax
+#pass
diff --git a/gas/testsuite/gas/i386/rdpid.s b/gas/testsuite/gas/i386/rdpid.s
new file mode 100644
index 0000000..fe6e401
--- /dev/null
+++ b/gas/testsuite/gas/i386/rdpid.s
@@ -0,0 +1,5 @@
+# Check 32bit RDPID instructions.
+
+	.text
+_start:
+	rdpid %eax
diff --git a/gas/testsuite/gas/i386/x86-64-rdpid-intel.d b/gas/testsuite/gas/i386/x86-64-rdpid-intel.d
new file mode 100644
index 0000000..240b4fa
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-rdpid-intel.d
@@ -0,0 +1,12 @@
+#objdump: -dwMintel
+#name: x86_64 RDPID (Intel disassembly)
+#source: x86-64-rdpid.s
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f c7 f8[ 	]*rdpid  rax
+[ 	]*[a-f0-9]+:[ 	]*f3 41 0f c7 fa[ 	]*rdpid  r10
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-rdpid.d b/gas/testsuite/gas/i386/x86-64-rdpid.d
new file mode 100644
index 0000000..3834784
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-rdpid.d
@@ -0,0 +1,12 @@
+#objdump: -dw
+#name: x86_64 RDPID insns
+
+.*: +file format .*
+
+
+Disassembly of section .text:
+
+0+ <_start>:
+[ 	]*[a-f0-9]+:[ 	]*f3 0f c7 f8[ 	]*rdpid  %rax
+[ 	]*[a-f0-9]+:[ 	]*f3 41 0f c7 fa[ 	]*rdpid  %r10
+#pass
diff --git a/gas/testsuite/gas/i386/x86-64-rdpid.s b/gas/testsuite/gas/i386/x86-64-rdpid.s
new file mode 100644
index 0000000..96647bd
--- /dev/null
+++ b/gas/testsuite/gas/i386/x86-64-rdpid.s
@@ -0,0 +1,6 @@
+# Check 64bit RDPID instructions.
+
+	.text
+_start:
+	rdpid %rax
+	rdpid %r10