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-rw-r--r--arch/arc/lib/start.S9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arc/lib/start.S b/arch/arc/lib/start.S
index e573ce7..84959b4 100644
--- a/arch/arc/lib/start.S
+++ b/arch/arc/lib/start.S
@@ -61,6 +61,15 @@ ENTRY(_start)
1:
#endif
+#ifdef __ARC_UNALIGNED__
+ /*
+ * Enable handling of unaligned access in the CPU as by default
+ * this HW feature is disabled while GCC starting from 8.1.0
+ * unconditionally uses it for ARC HS cores.
+ */
+ flag 1 << STATUS_AD_BIT
+#endif
+
/* Establish C runtime stack and frame */
mov %sp, CONFIG_SYS_INIT_SP_ADDR
mov %fp, %sp