1 files changed, 120 insertions, 0 deletions
diff --git a/src/3rdparty/masm/stubs/ExecutableAllocator.h b/src/3rdparty/masm/stubs/ExecutableAllocator.h
new file mode 100644
index 0000000000..f4292c791d
--- /dev/null
+++ b/src/3rdparty/masm/stubs/ExecutableAllocator.h
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the V4VM module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef MASM_EXECUTABLEALLOCATOR_H
+#define MASM_EXECUTABLEALLOCATOR_H
+
+#include <RefPtr.h>
+#include <RefCounted.h>
+#include <wtf/PageBlock.h>
+
+#include <qv4executableallocator.h>
+
+#if OS(WINDOWS)
+#include <windows.h>
+#else
+#include <sys/mman.h>
+#include <unistd.h>
+#endif
+
+namespace JSC {
+
+class JSGlobalData;
+
+struct ExecutableMemoryHandle : public RefCounted<ExecutableMemoryHandle> {
+    ExecutableMemoryHandle(QQmlJS::VM::ExecutableAllocator *allocator, int size)
+        : m_allocator(allocator)
+        , m_size(size)
+    {
+        m_allocation = allocator->allocate(size);
+    }
+    ~ExecutableMemoryHandle()
+    {
+        m_allocator->free(m_allocation);
+    }
+
+    inline void shrink(size_t) {
+        // ### TODO.
+    }
+
+    inline bool isManaged() const { return true; }
+
+    void* start() { return m_allocation->start(); }
+    int sizeInBytes() { return m_size; }
+
+    QQmlJS::VM::ExecutableAllocator *m_allocator;
+    QQmlJS::VM::ExecutableAllocator::Allocation *m_allocation;
+    int m_size;
+};
+
+struct ExecutableAllocator {
+    ExecutableAllocator(QQmlJS::VM::ExecutableAllocator *alloc)
+        : realAllocator(alloc)
+    {}
+
+    PassRefPtr<ExecutableMemoryHandle> allocate(JSGlobalData&, int size, void*, int)
+    {
+        return adoptRef(new ExecutableMemoryHandle(realAllocator, size));
+    }
+
+    static void makeWritable(void*, int)
+    {
+    }
+
+    static void makeExecutable(void* addr, int size)
+    {
+        size_t pageSize = WTF::pageSize();
+        size_t iaddr = reinterpret_cast<size_t>(addr);
+        size_t roundAddr = iaddr & ~(pageSize - static_cast<size_t>(1));
+#if OS(WINDOWS)
+        DWORD oldProtect;
+        VirtualProtect(reinterpret_cast<void*>(roundAddr), size + (iaddr - roundAddr), PAGE_EXECUTE_READWRITE, &oldProtect);
+#else
+        int mode = PROT_READ | PROT_WRITE | PROT_EXEC;
+        mprotect(reinterpret_cast<void*>(roundAddr), size + (iaddr - roundAddr), mode);
+#endif
+    }
+
+    QQmlJS::VM::ExecutableAllocator *realAllocator;
+};
+
+}
+
+#endif // MASM_EXECUTABLEALLOCATOR_H