From 068c62341c7d6f3f086b16102abf1c5f5eaabffe Mon Sep 17 00:00:00 2001
From: John Romein <romein@astron.nl>
Date: Thu, 13 Jul 2006 07:57:35 +0000
Subject: [PATCH] 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 | 6 +++---
LCS/Common/include/Common/Timer.h | 12 ++++++------
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/Appl/CEP/CS1/CS1_BGLProc/src/FIR.S b/Appl/CEP/CS1/CS1_BGLProc/src/FIR.S
index 15b47b9248e..44def8072c8 100644
--- a/Appl/CEP/CS1/CS1_BGLProc/src/FIR.S
+++ b/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
diff --git a/LCS/Common/include/Common/Timer.h b/LCS/Common/include/Common/Timer.h
index 49ccdf3e2f3..c2bf8a9a0cf 100644
--- a/LCS/Common/include/Common/Timer.h
+++ b/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"
--
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