Portable refactorings.

Separate quick from portable entrypoints.
Move architectural dependencies into arch.

Change-Id: I9adbc0a9782e2959fdc3308215f01e3107632b7c

1 files changed, 89 insertions, 0 deletions

diff --git a/runtime/entrypoints/math_entrypoints.cc b/runtime/entrypoints/math_entrypoints.cc
new file mode 100644
index 0000000..31d13c8
--- /dev/null
+++ b/runtime/entrypoints/math_entrypoints.cc
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2012 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 "math_entrypoints.h"
+
+namespace art {
+
+extern "C" double art_l2d(int64_t l) {
+  return static_cast<double>(l);
+}
+
+extern "C" float art_l2f(int64_t l) {
+  return static_cast<float>(l);
+}
+
+/*
+ * Float/double conversion requires clamping to min and max of integer form.  If
+ * target doesn't support this normally, use these.
+ */
+extern "C" int64_t art_d2l(double d) {
+  static const double kMaxLong = static_cast<double>(static_cast<int64_t>(0x7fffffffffffffffULL));
+  static const double kMinLong = static_cast<double>(static_cast<int64_t>(0x8000000000000000ULL));
+  if (d >= kMaxLong) {
+    return static_cast<int64_t>(0x7fffffffffffffffULL);
+  } else if (d <= kMinLong) {
+    return static_cast<int64_t>(0x8000000000000000ULL);
+  } else if (d != d)  {  // NaN case
+    return 0;
+  } else {
+    return static_cast<int64_t>(d);
+  }
+}
+
+extern "C" int64_t art_f2l(float f) {
+  static const float kMaxLong = static_cast<float>(static_cast<int64_t>(0x7fffffffffffffffULL));
+  static const float kMinLong = static_cast<float>(static_cast<int64_t>(0x8000000000000000ULL));
+  if (f >= kMaxLong) {
+    return static_cast<int64_t>(0x7fffffffffffffffULL);
+  } else if (f <= kMinLong) {
+    return static_cast<int64_t>(0x8000000000000000ULL);
+  } else if (f != f) {  // NaN case
+    return 0;
+  } else {
+    return static_cast<int64_t>(f);
+  }
+}
+
+extern "C" int32_t art_d2i(double d) {
+  static const double kMaxInt = static_cast<double>(static_cast<int32_t>(0x7fffffffUL));
+  static const double kMinInt = static_cast<double>(static_cast<int32_t>(0x80000000UL));
+  if (d >= kMaxInt) {
+    return static_cast<int32_t>(0x7fffffffUL);
+  } else if (d <= kMinInt) {
+    return static_cast<int32_t>(0x80000000UL);
+  } else if (d != d)  {  // NaN case
+    return 0;
+  } else {
+    return static_cast<int32_t>(d);
+  }
+}
+
+extern "C" int32_t art_f2i(float f) {
+  static const float kMaxInt = static_cast<float>(static_cast<int32_t>(0x7fffffffUL));
+  static const float kMinInt = static_cast<float>(static_cast<int32_t>(0x80000000UL));
+  if (f >= kMaxInt) {
+    return static_cast<int32_t>(0x7fffffffUL);
+  } else if (f <= kMinInt) {
+    return static_cast<int32_t>(0x80000000UL);
+  } else if (f != f) {  // NaN case
+    return 0;
+  } else {
+    return static_cast<int32_t>(f);
+  }
+}
+
+}  // namespace art