Title: [7748] trunk/arch/blackfin/mach-bf561/atomic.S: work around testset anomaly 477
- Revision
- 7748
- Author
- vapier
- Date
- 2009-11-02 22:14:38 -0500 (Mon, 02 Nov 2009)
Log Message
work around testset anomaly 477
Modified Paths
Diff
Modified: trunk/arch/blackfin/mach-bf561/atomic.S (7747 => 7748)
--- trunk/arch/blackfin/mach-bf561/atomic.S 2009-11-03 03:07:18 UTC (rev 7747)
+++ trunk/arch/blackfin/mach-bf561/atomic.S 2009-11-03 03:14:38 UTC (rev 7748)
@@ -19,6 +19,16 @@
\reg\().h = _corelock;
.endm
+.macro safe_testset addr:req, scratch:req
+#if ANOMALY_05000477
+ cli \scratch;
+ testset (\addr);
+ sti \scratch;
+#else
+ testset (\addr);
+#endif
+.endm
+
/*
* r0 = address of atomic data to flush and invalidate (32bit).
*
@@ -33,7 +43,7 @@
cli r0;
coreslot_loadaddr p0;
.Lretry_corelock:
- testset (p0);
+ safe_testset p0, r2;
if cc jump .Ldone_corelock;
SSYNC(r2);
jump .Lretry_corelock
@@ -56,7 +66,7 @@
cli r0;
coreslot_loadaddr p0;
.Lretry_corelock_noflush:
- testset (p0);
+ safe_testset p0, r2;
if cc jump .Ldone_corelock_noflush;
SSYNC(r2);
jump .Lretry_corelock_noflush
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