From: Igor Guryanov <gurya...@synopsys.com>
It's prohibited to put branch instruction in the very end of zero-delay
loop. On execution this causes "Illegal instruction" exception.
Signed-off-by: Alexey Brodkin <abrod...@synopsys.com>
Signed-off-by: Igor Guryanov <gurya...@synopsys.com>
---
arch/arc/lib/memcmp.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arc/lib/memcmp.S b/arch/arc/lib/memcmp.S
index fa5aac5..87bccab 100644
--- a/arch/arc/lib/memcmp.S
+++ b/arch/arc/lib/memcmp.S
@@ -29,6 +29,7 @@ memcmp:
ld.a %r4, [%r0, 8]
ld.a %r5, [%r1, 8]
brne WORD2, %r12, .Lodd
+ nop
.Loop_end:
asl_s SHIFT, SHIFT, 3
bhs_s .Last_cmp
@@ -105,6 +106,7 @@ memcmp:
ldb.a %r4, [%r0, 2]
ldb.a %r5, [%r1, 2]
brne %r3, %r12, .Lbyte_odd
+ nop
.Lbyte_end:
bcc .Lbyte_even
brne %r4, %r5, .Lbyte_even
--
2.1.0
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
