Add support for the MIPS eXtended Physical Address (XPA) ASE.

ChangeLog:

binutils/
	* doc/binutils.texi: Document the disassemble MIPS XPA instructions
	command line option.

gas/
	* config/tc-mips.c (options): Add OPTION_XPA and OPTION_NO_XPA.
 	(md_longopts): Add xpa and no-xpa command line options.
 	(mips_ases): Add MIPS XPA ASE.
 	(mips_cpu_info_table): Update p5600 entry to allow the XPA ASE.
 	* doc/as.texinfo: Document the MIPS XPA command line options.
 	* doc/c-mips.texi: Document the MIPS XPA command line options,
 	and assembler directives.

gas/testsuite/
 	* gas/mips/mips.exp: Add xpa tests.
 	* gas/mips/xpa.s: New test.
 	* gas/mips/xpa.d: Likewise.

include/
 	* opcode/mips.h (ASE_XPA): New define.

opcodes/
 	* mips-dis.c (mips_arch_choices): Update mips32r2 and mips64r2
 	to allow the MIPS XPA ASE.
 	(parse_mips_dis_option): Process the -Mxpa option.
 	* mips-opc.c (XPA): New define.
 	(mips_builtin_opcodes): Add MIPS XPA instructions and move the
 	locations of the ctc0 and cfc0 instructions.

4 files changed, 61 insertions, 0 deletions

diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 9b3d9c3..492450b 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2014-04-23  Andrew Bennett  <andrew.bennett@imgtec.com>
+
+	* gas/mips/mips.exp: Add xpa tests.
+	* gas/mips/xpa.s: New test.
+	* gas/mips/xpa.d: Likewise.
+
 2014-04-22  Sandra Loosemore  <sandra@codesourcery.com>
 
 	* gas/nios2/selftest.s: New.
diff --git a/gas/testsuite/gas/mips/mips.exp b/gas/testsuite/gas/mips/mips.exp
index 628f482..b0d8ac2 100644
--- a/gas/testsuite/gas/mips/mips.exp
+++ b/gas/testsuite/gas/mips/mips.exp
@@ -1170,6 +1170,8 @@ if { [istarget mips*-*-vxworks*] } {
     run_dump_test_arches "msa-relax"	[mips_arch_list_matching mips32r2]
     run_dump_test_arches "msa-branch"	[mips_arch_list_matching mips32r2]
 
+    run_dump_test_arches "xpa"		[mips_arch_list_matching mips32r2 !micromips]
+
     run_dump_test "pcrel-1"
     run_dump_test "pcrel-2"
     run_list_test "pcrel-3" "" "Invalid cross-section PC-relative references"
diff --git a/gas/testsuite/gas/mips/xpa.d b/gas/testsuite/gas/mips/xpa.d
new file mode 100644
index 0000000..f1047c9
--- /dev/null
+++ b/gas/testsuite/gas/mips/xpa.d
@@ -0,0 +1,24 @@
+#objdump: -dr --prefix-addresses --show-raw-insn -Mxpa,cp0-names=mips32r2
+#name: XPA instructions
+#as: -32 -mxpa
+
+.*: +file format .*mips.*
+
+Disassembly of section \.text:
+[0-9a-f]+ <[^>]*> 40420800 	mfhc0	v0,c0_random
+[0-9a-f]+ <[^>]*> 40428000 	mfhc0	v0,c0_config
+[0-9a-f]+ <[^>]*> 40420002 	mfhc0	v0,c0_mvpconf0
+[0-9a-f]+ <[^>]*> 40420007 	mfhc0	v0,\$0,7
+[0-9a-f]+ <[^>]*> 40c20800 	mthc0	v0,c0_random
+[0-9a-f]+ <[^>]*> 40c28000 	mthc0	v0,c0_config
+[0-9a-f]+ <[^>]*> 40c20002 	mthc0	v0,c0_mvpconf0
+[0-9a-f]+ <[^>]*> 40c20007 	mthc0	v0,\$0,7
+[0-9a-f]+ <[^>]*> 40620c00 	mfhgc0	v0,c0_random
+[0-9a-f]+ <[^>]*> 40628400 	mfhgc0	v0,c0_config
+[0-9a-f]+ <[^>]*> 40620402 	mfhgc0	v0,c0_mvpconf0
+[0-9a-f]+ <[^>]*> 40620407 	mfhgc0	v0,\$0,7
+[0-9a-f]+ <[^>]*> 40620e00 	mthgc0	v0,c0_random
+[0-9a-f]+ <[^>]*> 40628600 	mthgc0	v0,c0_config
+[0-9a-f]+ <[^>]*> 40620602 	mthgc0	v0,c0_mvpconf0
+[0-9a-f]+ <[^>]*> 40620607 	mthgc0	v0,\$0,7
+	...
diff --git a/gas/testsuite/gas/mips/xpa.s b/gas/testsuite/gas/mips/xpa.s
new file mode 100644
index 0000000..4d91f75
--- /dev/null
+++ b/gas/testsuite/gas/mips/xpa.s
@@ -0,0 +1,29 @@
+	.text
+	.set	noat
+	.set	noreorder
+	.set	nomacro
+test_xpa:
+
+	mfhc0	$2, $1
+	mfhc0	$2, $16
+	mfhc0	$2, $0, 2
+	mfhc0	$2, $0, 7
+
+	mthc0	$2, $1
+	mthc0	$2, $16
+	mthc0	$2, $0, 2
+	mthc0	$2, $0, 7
+	
+	mfhgc0	$2, $1
+	mfhgc0	$2, $16
+	mfhgc0	$2, $0, 2
+	mfhgc0	$2, $0, 7
+
+	mthgc0	$2, $1
+	mthgc0	$2, $16
+	mthgc0	$2, $0, 2
+	mthgc0	$2, $0, 7
+
+# Force at least 8 (non-delay-slot) zero bytes, to make 'objdump' print ...
+	.align  2
+	.space  8