1/*
2 * Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "InitializeLLVMPOSIX.h"
28
29#if HAVE(LLVM)
30
31#include "LLVMAPI.h"
32#include "Options.h"
33#include <dlfcn.h>
34#include <wtf/DataLog.h>
35
36namespace JSC {
37
38typedef void (*LoggerFunction)(const char*, ...) WTF_ATTRIBUTE_PRINTF(1, 2);
39typedef LLVMAPI* (*InitializerFunction)(LoggerFunction);
40
41void initializeLLVMPOSIX(const char* libraryName)
42{
43    const bool verbose =
44        Options::verboseFTLCompilation()
45        || Options::showFTLDisassembly()
46        || Options::verboseFTLFailure()
47        || Options::verboseCompilation()
48        || Options::showDFGDisassembly()
49        || Options::showDisassembly();
50
51    void* library = dlopen(libraryName, RTLD_NOW);
52    if (!library) {
53        if (verbose)
54            dataLog("Failed to load LLVM library at ", libraryName, ": ", dlerror(), "\n");
55        return;
56    }
57
58    const char* symbolName = "initializeAndGetJSCLLVMAPI";
59    InitializerFunction initializer = bitwise_cast<InitializerFunction>(
60        dlsym(library, symbolName));
61    if (!initializer) {
62        if (verbose)
63            dataLog("Failed to find ", symbolName, " in ", libraryName, ": ", dlerror());
64        return;
65    }
66
67    llvm = initializer(WTFLogAlwaysAndCrash);
68    if (!llvm) {
69        if (verbose)
70            dataLog("LLVM initilization failed.\n");
71    }
72}
73
74} // namespace JSC
75
76#endif // HAVE(LLVM)
77
78