Commit 7d3cab7926d08aad9a8e54420d6878cb17efd185
2018-04-21T00:24:50
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(ffi_cacheflush)
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