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(EXECUTABLE_ALLOCATOR_DEMAND) && 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 | |