projects / apple / javascriptcore.git / blame
| Commit | Line | Data |
|---|---|---|
| f9bf01c6 A |
1 | /* |
| 2 | * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies) | |
| 3 | * | |
| 4 | * This library is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU Lesser General Public | |
| 6 | * License as published by the Free Software Foundation; either | |
| 7 | * version 2 of the License, or (at your option) any later version. | |
| 8 | * | |
| 9 | * This library is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | * Lesser General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU Lesser General Public | |
| 15 | * License along with this library; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 17 | * Boston, MA 02110-1301 USA | |
| 18 | * | |
| 19 | */ | |
| 20 | ||
| 21 | #include "config.h" | |
| 22 | ||
| 23 | #include "ExecutableAllocator.h" | |
| 24 | ||
| 25 | #if ENABLE(ASSEMBLER) && OS(SYMBIAN) | |
| 26 | ||
| 27 | #include <e32hal.h> | |
| 28 | #include <e32std.h> | |
| 29 | ||
| 30 | // Set the page size to 256 Kb to compensate for moving memory model limitation | |
| 31 | const size_t MOVING_MEM_PAGE_SIZE = 256 * 1024; | |
| 32 | ||
| 33 | namespace JSC { | |
| 34 | ||
| 35 | void ExecutableAllocator::intializePageSize() | |
| 36 | { | |
| 37 | #if CPU(ARMV5_OR_LOWER) | |
| 38 | // The moving memory model (as used in ARMv5 and earlier platforms) | |
| 39 | // on Symbian OS limits the number of chunks for each process to 16. | |
| 40 | // To mitigate this limitation increase the pagesize to | |
| 41 | // allocate less of larger chunks. | |
| 42 | ExecutableAllocator::pageSize = MOVING_MEM_PAGE_SIZE; | |
| 43 | #else | |
| 44 | TInt page_size; | |
| 45 | UserHal::PageSizeInBytes(page_size); | |
| 46 | ExecutableAllocator::pageSize = page_size; | |
| 47 | #endif | |
| 48 | } | |
| 49 | ||
| 50 | ExecutablePool::Allocation ExecutablePool::systemAlloc(size_t n) | |
| 51 | { | |
| 52 | RChunk* codeChunk = new RChunk(); | |
| 53 | ||
| 54 | TInt errorCode = codeChunk->CreateLocalCode(n, n); | |
| 55 | ||
| 56 | char* allocation = reinterpret_cast<char*>(codeChunk->Base()); | |
| 57 | if (!allocation) | |
| 58 | CRASH(); | |
| 59 | ExecutablePool::Allocation alloc = { allocation, n, codeChunk }; | |
| 60 | return alloc; | |
| 61 | } | |
| 62 | ||
| 63 | void ExecutablePool::systemRelease(const ExecutablePool::Allocation& alloc) | |
| 64 | { | |
| 65 | alloc.chunk->Close(); | |
| 66 | delete alloc.chunk; | |
| 67 | } | |
| 68 | ||
| 69 | #if ENABLE(ASSEMBLER_WX_EXCLUSIVE) | |
| 70 | #error "ASSEMBLER_WX_EXCLUSIVE not yet suported on this platform." | |
| 71 | #endif | |
| 72 | ||
| 73 | } | |
| 74 | ||
| 75 | #endif // HAVE(ASSEMBLER) |