BugID: 225

Use SPRs instead of mftb(u), since it is not clear whether all PPC
implementations support mftb(u) and there is confusion about the right opcode
for these instructions.

Appl/CEP/CS1/CS1_BGLProc/src/FIR.S

@@ -56,9 +56,9 @@ _bgl_mutex_unlock:
 
 .global _rdtsc
 _rdtsc:
-loop6:	mftbu	3
-	mftb	4
-	mftbu	5
+loop6:	mfspr	3,269
+	mfspr	4,268
+	mfspr	5,269
 	cmpw	5,3
 	bne-	loop6
 	blr

LCS/Common/include/Common/Timer.h

@@ -216,9 +216,9 @@ namespace LOFAR {
     asm
     (
 	"0:\n\t"
-	"mftbu %0\n\t"
-	"mftb %1\n\t"
-	"mftbu %2\n\t"
+	"mfspr %0,269\n\t"
+	"mfspr %1,268\n\t"
+	"mfspr %2,269\n\t"
 	"cmpw %2,%0\n\t"
 	"bne 0b\n\t"
 	"subfc %3,%1,%3\n\t"
@@ -301,9 +301,9 @@ namespace LOFAR {
     asm
     (
 	"0:\n\t"
-	"mftbu %0\n\t"
-	"mftb %1\n\t"
-	"mftbu %2\n\t"
+	"mfspr %0,269\n\t"
+	"mfspr %1,268\n\t"
+	"mfspr %2,269\n\t"
 	"cmpw %2,%0\n\t"
 	"bne 0b\n\t"
 	"addc %3,%3,%1\n\t"