1 files changed, 67 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wasm/WasmCallingConvention.cpp b/Source/JavaScriptCore/wasm/WasmCallingConvention.cpp
new file mode 100644
index 000000000..9f6ac670a
--- /dev/null
+++ b/Source/JavaScriptCore/wasm/WasmCallingConvention.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "WasmCallingConvention.h"
+
+#if ENABLE(WEBASSEMBLY)
+
+#include <wtf/NeverDestroyed.h>
+
+namespace JSC { namespace Wasm {
+
+const JSCCallingConvention& jscCallingConvention()
+{
+    static LazyNeverDestroyed<JSCCallingConvention> staticJSCCallingConvention;
+    static std::once_flag staticJSCCallingConventionFlag;
+    std::call_once(staticJSCCallingConventionFlag, [] () {
+        staticJSCCallingConvention.construct(Vector<Reg>(), Vector<Reg>(), RegisterSet::calleeSaveRegisters());
+    });
+
+    return staticJSCCallingConvention;
+}
+
+const WasmCallingConvention& wasmCallingConvention()
+{
+    static LazyNeverDestroyed<JSCCallingConvention> staticWasmCallingConvention;
+    static std::once_flag staticWasmCallingConventionFlag;
+    std::call_once(staticWasmCallingConventionFlag, [] () {
+        Vector<Reg> gprArgumentRegisters(GPRInfo::numberOfArgumentRegisters);
+        for (unsigned i = 0; i < GPRInfo::numberOfArgumentRegisters; ++i)
+            gprArgumentRegisters[i] = GPRInfo::toArgumentRegister(i);
+
+        Vector<Reg> fprArgumentRegisters(FPRInfo::numberOfArgumentRegisters);
+        for (unsigned i = 0; i < FPRInfo::numberOfArgumentRegisters; ++i)
+            fprArgumentRegisters[i] = FPRInfo::toArgumentRegister(i);
+
+        staticWasmCallingConvention.construct(WTFMove(gprArgumentRegisters), WTFMove(fprArgumentRegisters), RegisterSet::calleeSaveRegisters());
+    });
+
+    return staticWasmCallingConvention;
+}
+
+} } // namespace JSC::Wasm
+
+#endif // ENABLE(B3_JIT)