1 /* 2 * Copyright (C) 2008 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 28 #include "ExecutableAllocator.h" 29 30 #if ENABLE(ASSEMBLER) && OS(WINDOWS) 31 32 #include "windows.h" 33 34 namespace JSC { 35 36 void ExecutableAllocator::intializePageSize() 37 { 38 SYSTEM_INFO system_info; 39 GetSystemInfo(&system_info); 40 ExecutableAllocator::pageSize = system_info.dwPageSize; 41 } 42 43 ExecutablePool::Allocation ExecutablePool::systemAlloc(size_t n) 44 { 45 void* allocation = VirtualAlloc(0, n, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE); 46 if (!allocation) 47 CRASH(); 48 ExecutablePool::Allocation alloc = {reinterpret_cast<char*>(allocation), n}; 49 return alloc; 50 } 51 52 void ExecutablePool::systemRelease(const ExecutablePool::Allocation& alloc) 53 { 54 VirtualFree(alloc.pages, 0, MEM_RELEASE); 55 } 56 57 #if ENABLE(ASSEMBLER_WX_EXCLUSIVE) 58 #error "ASSEMBLER_WX_EXCLUSIVE not yet suported on this platform." 59 #endif 60 61 } 62 63 #endif // HAVE(ASSEMBLER) 64
