xtensa-linux: use cache flush instruction only if it is available (#426)
diff --git a/src/xtensa/sysv.S b/src/xtensa/sysv.S index 64e6a09..e942179 100644 --- a/src/xtensa/sysv.S +++ b/src/xtensa/sysv.S
@@ -169,8 +169,13 @@ entry a1, 16 -1: dhwbi a2, 0 +1: +#if XCHAL_DCACHE_SIZE + dhwbi a2, 0 +#endif +#if XCHAL_ICACHE_SIZE ihi a2, 0 +#endif addi a2, a2, 4 blt a2, a3, 1b