JavaScriptCore-903.tar.gz

[apple/javascriptcore.git] / jit / ExecutableAllocatorPosix.cpp

diff --git a/jit/ExecutableAllocatorPosix.cpp b/jit/ExecutableAllocatorPosix.cpp
deleted file mode 100644 (file)
index 06375ad..0000000
--- a/jit/ExecutableAllocatorPosix.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2008 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 "ExecutableAllocator.h"
-
-#if ENABLE(ASSEMBLER) && OS(UNIX) && !OS(SYMBIAN)
-
-#include <sys/mman.h>
-#include <unistd.h>
-#include <wtf/VMTags.h>
-
-namespace JSC {
-
-#if !(OS(DARWIN) && CPU(X86_64))
-
-void ExecutableAllocator::intializePageSize()
-{
-    ExecutableAllocator::pageSize = getpagesize();
-}
-
-ExecutablePool::Allocation ExecutablePool::systemAlloc(size_t n)
-{
-    void* allocation = mmap(NULL, n, INITIAL_PROTECTION_FLAGS, MAP_PRIVATE | MAP_ANON, VM_TAG_FOR_EXECUTABLEALLOCATOR_MEMORY, 0);
-    if (allocation == MAP_FAILED)
-        CRASH();
-    ExecutablePool::Allocation alloc = { reinterpret_cast<char*>(allocation), n };
-    return alloc;
-}
-
-void ExecutablePool::systemRelease(const ExecutablePool::Allocation& alloc)
-{ 
-    int result = munmap(alloc.pages, alloc.size);
-    ASSERT_UNUSED(result, !result);
-}
-
-#endif // !(OS(DARWIN) && CPU(X86_64))
-
-#if ENABLE(ASSEMBLER_WX_EXCLUSIVE)
-void ExecutableAllocator::reprotectRegion(void* start, size_t size, ProtectionSeting setting)
-{
-    if (!pageSize)
-        intializePageSize();
-
-    // Calculate the start of the page containing this region,
-    // and account for this extra memory within size.
-    intptr_t startPtr = reinterpret_cast<intptr_t>(start);
-    intptr_t pageStartPtr = startPtr & ~(pageSize - 1);
-    void* pageStart = reinterpret_cast<void*>(pageStartPtr);
-    size += (startPtr - pageStartPtr);
-
-    // Round size up
-    size += (pageSize - 1);
-    size &= ~(pageSize - 1);
-
-    mprotect(pageStart, size, (setting == Writable) ? PROTECTION_FLAGS_RW : PROTECTION_FLAGS_RX);
-}
-#endif
-
-}
-
-#endif // HAVE(ASSEMBLER)