Source/JavaScriptCore/assembler/AbstractMacroAssembler.cpp

/*
 * Copyright (C) 2017-2021 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 "MacroAssembler.h" // Have to break with style because AbstractMacroAssembler.h is a shady header.

#if ENABLE(ASSEMBLER)

#include <wtf/PrintStream.h>

namespace JSC {

void AbstractMacroAssemblerBase::initializeRandom()
{
    // No strong cryptographic characteristics are necessary.
    static std::once_flag onceKey;
    static uint32_t globalCounter;
    std::call_once(onceKey, [&] {
        globalCounter = cryptographicallyRandomNumber();
    });
    ASSERT(!m_randomSource);
    m_randomSource.emplace(globalCounter++);
}

}

namespace WTF {

void printInternal(PrintStream& out, JSC::AbstractMacroAssemblerBase::StatusCondition condition)
{
    switch (condition) {
    case JSC::AbstractMacroAssemblerBase::Success:
        out.print("Success");
        return;
    case JSC::AbstractMacroAssemblerBase::Failure:
        out.print("Failure");
        return;
    }
    RELEASE_ASSERT_NOT_REACHED();
}

} // namespace WTF

#endif // ENABLE(ASSEMBLER)