ART: Move __memcmp16 from Bionic to ART
Handle __memcmp16 / MemCmp16 in ART. Import assembly implementations
for arm and mips from Bionic. Use a generic C version for all other
platforms.
Removes the memcmp16 quick entrypoint, as it is never used. Bump
the oat version and update thread.cc and checks to reflect the
structural change.
Change-Id: I54a5a1da2a0a43ef271c8aeda0bf2276b8b11ac6
diff --git a/runtime/arch/memcmp16.cc b/runtime/arch/memcmp16.cc
new file mode 100644
index 0000000..7928085
--- /dev/null
+++ b/runtime/arch/memcmp16.cc
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "memcmp16.h"
+
+// This linked against by assembly stubs, only.
+#pragma GCC diagnostic ignored "-Wunused-function"
+
+int32_t memcmp16_generic_static(const uint16_t* s0, const uint16_t* s1, size_t count) {
+ for (size_t i = 0; i < count; i++) {
+ if (s0[i] != s1[i]) {
+ return static_cast<int32_t>(s0[i]) - static_cast<int32_t>(s1[i]);
+ }
+ }
+ return 0;
+}
+
+#pragma GCC diagnostic warning "-Wunused-function"