commit db76a70026ab100148eb274322fac01f1a1dd466
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Nov 29 19:13:17 2014 +1030

    Power4 should treat mftb as extended mfspr mnemonic
    
    On further reading of ISA manual it appears gas should have been
    treating mftb and mftbu as extended mnemonics for mfspr, for ISA 2.03
    and later.
    
    opcodes/
            * ppc-opc.c (powerpc_opcodes): Make mftb* generate mfspr for
            power4 and later.
    gas/testsuite/
            * gas/ppc/a2.d: Update for mftb change.
            * gas/ppc/476.d: Likewise.

### a/opcodes/ChangeLog
### b/opcodes/ChangeLog
## -1,3 +1,8 @@
+2014-11-30  Alan Modra  <amodra@gmail.com>
+
+	* ppc-opc.c (powerpc_opcodes): Make mftb* generate mfspr for
+	power4 and later.
+
 2014-11-28  Sandra Loosemore  <sandra@codesourcery.com>
 
 	* nios2-opc.c (nios2_r1_opcodes): Remove deleted attributes
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -4880,9 +4880,9 @@ const struct powerpc_opcode powerpc_opcodes[] = {
 {"mfsprg5",	XSPR(31,339,261), XSPR_MASK, PPC405|BOOKE|PPCVLE, PPCNONE, {RT}},
 {"mfsprg6",	XSPR(31,339,262), XSPR_MASK, PPC405|BOOKE|PPCVLE, PPCNONE, {RT}},
 {"mfsprg7",	XSPR(31,339,263), XSPR_MASK, PPC405|BOOKE|PPCVLE, PPCNONE, {RT}},
-{"mftb",	XSPR(31,339,268), XSPR_MASK, BOOKE|PPCVLE, PPCNONE,	{RT}},
-{"mftbl",	XSPR(31,339,268), XSPR_MASK, BOOKE|PPCVLE, PPCNONE,	{RT}},
-{"mftbu",	XSPR(31,339,269), XSPR_MASK, BOOKE|PPCVLE, PPCNONE,	{RT}},
+{"mftbu",	XSPR(31,339,269), XSPR_MASK, POWER4|BOOKE|PPCVLE, PPCNONE, {RT}},
+{"mftb",	X(31,339),	  X_MASK,    POWER4|BOOKE|PPCVLE, PPCNONE, {RT, TBR}},
+{"mftbl",	XSPR(31,339,268), XSPR_MASK, POWER4|BOOKE|PPCVLE, PPCNONE, {RT}},
 {"mfsprg0",	XSPR(31,339,272), XSPR_MASK, PPC|PPCVLE, PPCNONE,	{RT}},
 {"mfsprg1",	XSPR(31,339,273), XSPR_MASK, PPC|PPCVLE, PPCNONE,	{RT}},
 {"mfsprg2",	XSPR(31,339,274), XSPR_MASK, PPC|PPCVLE, PPCNONE,	{RT}},
@@ -5051,9 +5051,9 @@ const struct powerpc_opcode powerpc_opcodes[] = {
 
 {"tlbia",	X(31,370),	0xffffffff,  PPC,	TITAN,  	{0}},
 
-{"mftbl",	XSPR(31,371,268), XSPR_MASK, PPC,	NO371,		{RT}},
-{"mftbu",	XSPR(31,371,269), XSPR_MASK, PPC,	NO371,		{RT}},
-{"mftb",	X(31,371),	X_MASK,      PPC|PPCA2,	NO371,		{RT, TBR}},
+{"mftbu",	XSPR(31,371,269), XSPR_MASK, PPC,	NO371|POWER4,	{RT}},
+{"mftb",	X(31,371),	X_MASK,      PPC,	NO371|POWER4,	{RT, TBR}},
+{"mftbl",	XSPR(31,371,268), XSPR_MASK, PPC,	NO371|POWER4,	{RT}},
 
 {"lwaux",	X(31,373),	X_MASK,      PPC64|PPCVLE, PPCNONE,	{RT, RAL, RB}},