JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / llvm / InitializeLLVMPOSIX.cpp

diff --git a/llvm/InitializeLLVMPOSIX.cpp b/llvm/InitializeLLVMPOSIX.cpp
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+/*
+ * Copyright (C) 2013, 2014 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 "InitializeLLVMPOSIX.h"
+
+#if HAVE(LLVM)
+
+#include "LLVMAPI.h"
+#include "Options.h"
+#include <dlfcn.h>
+#include <wtf/DataLog.h>
+
+namespace JSC {
+
+typedef void (*LoggerFunction)(const char*, ...) WTF_ATTRIBUTE_PRINTF(1, 2);
+typedef LLVMAPI* (*InitializerFunction)(LoggerFunction);
+
+void initializeLLVMPOSIX(const char* libraryName)
+{
+    const bool verbose =
+        Options::verboseFTLCompilation()
+        || Options::showFTLDisassembly()
+        || Options::verboseFTLFailure()
+        || Options::verboseCompilation()
+        || Options::showDFGDisassembly()
+        || Options::showDisassembly();
+    
+    void* library = dlopen(libraryName, RTLD_NOW);
+    if (!library) {
+        if (verbose)
+            dataLog("Failed to load LLVM library at ", libraryName, ": ", dlerror(), "\n");
+        return;
+    }
+    
+    const char* symbolName = "initializeAndGetJSCLLVMAPI";
+    InitializerFunction initializer = bitwise_cast<InitializerFunction>(
+        dlsym(library, symbolName));
+    if (!initializer) {
+        if (verbose)
+            dataLog("Failed to find ", symbolName, " in ", libraryName, ": ", dlerror());
+        return;
+    }
+    
+    llvm = initializer(WTFLogAlwaysAndCrash);
+    if (!llvm) {
+        if (verbose)
+            dataLog("LLVM initilization failed.\n");
+    }
+}
+
+} // namespace JSC
+
+#endif // HAVE(LLVM)
+