Refactor runtime support.
Change-Id: Id7470a4105838150d5ceb73ab2c8c83e739660df
diff --git a/src/oat/runtime/support_math.cc b/src/oat/runtime/support_math.cc
new file mode 100644
index 0000000..cb5f705
--- /dev/null
+++ b/src/oat/runtime/support_math.cc
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2012 Google Inc. All Rights Reserved.
+ *
+ * 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 <stdint.h>
+
+namespace art {
+
+int CmplFloat(float a, float b) {
+ if (a == b) {
+ return 0;
+ } else if (a < b) {
+ return -1;
+ } else if (a > b) {
+ return 1;
+ }
+ return -1;
+}
+
+int CmpgFloat(float a, float b) {
+ if (a == b) {
+ return 0;
+ } else if (a < b) {
+ return -1;
+ } else if (a > b) {
+ return 1;
+ }
+ return 1;
+}
+
+int CmpgDouble(double a, double b) {
+ if (a == b) {
+ return 0;
+ } else if (a < b) {
+ return -1;
+ } else if (a > b) {
+ return 1;
+ }
+ return 1;
+}
+
+int CmplDouble(double a, double b) {
+ if (a == b) {
+ return 0;
+ } else if (a < b) {
+ return -1;
+ } else if (a > b) {
+ return 1;
+ }
+ return -1;
+}
+
+/*
+ * Float/double conversion requires clamping to min and max of integer form. If
+ * target doesn't support this normally, use these.
+ */
+int64_t D2L(double d) {
+ static const double kMaxLong = (double) (int64_t) 0x7fffffffffffffffULL;
+ static const double kMinLong = (double) (int64_t) 0x8000000000000000ULL;
+ if (d >= kMaxLong) {
+ return (int64_t) 0x7fffffffffffffffULL;
+ } else if (d <= kMinLong) {
+ return (int64_t) 0x8000000000000000ULL;
+ } else if (d != d) { // NaN case
+ return 0;
+ } else {
+ return (int64_t) d;
+ }
+}
+
+int64_t F2L(float f) {
+ static const float kMaxLong = (float) (int64_t) 0x7fffffffffffffffULL;
+ static const float kMinLong = (float) (int64_t) 0x8000000000000000ULL;
+ if (f >= kMaxLong) {
+ return (int64_t) 0x7fffffffffffffffULL;
+ } else if (f <= kMinLong) {
+ return (int64_t) 0x8000000000000000ULL;
+ } else if (f != f) { // NaN case
+ return 0;
+ } else {
+ return (int64_t) f;
+ }
+}
+
+} // namespace art