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-rw-r--r--cpukit/score/cpu/arm/rtems/score/cpu.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/cpukit/score/cpu/arm/rtems/score/cpu.h b/cpukit/score/cpu/arm/rtems/score/cpu.h
index 9dc4d07103..25d4ee2fb7 100644
--- a/cpukit/score/cpu/arm/rtems/score/cpu.h
+++ b/cpukit/score/cpu/arm/rtems/score/cpu.h
@@ -145,8 +145,13 @@
#define CPU_STACK_GROWS_UP FALSE
-/* XXX Why 32? */
-#define CPU_STRUCTURE_ALIGNMENT __attribute__ ((aligned (32)))
+#if defined(ARM_MULTILIB_CACHE_LINE_MAX_64)
+ #define CPU_CACHE_LINE_BYTES 32
+#else
+ #define CPU_CACHE_LINE_BYTES 64
+#endif
+
+#define CPU_STRUCTURE_ALIGNMENT __attribute__ ((aligned (CPU_CACHE_LINE_BYTES )))
#define CPU_TIMESTAMP_USE_STRUCT_TIMESPEC TRUE