mirror of
https://github.com/hrydgard/ppsspp.git
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90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "ppsspp_config.h"
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#if PPSSPP_PLATFORM(SWITCH)
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#include <cstring>
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#include <cstdlib>
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#include "Common/CommonTypes.h"
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#include "Common/Log.h"
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#include "Common/MemoryUtil.h"
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#include "Common/StringUtils.h"
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#include "Common/SysError.h"
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#include <errno.h>
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#include <stdio.h>
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#include <malloc.h> // memalign
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#define MEM_PAGE_SIZE (0x1000)
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#define MEM_PAGE_MASK ((MEM_PAGE_SIZE)-1)
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#define ppsspp_round_page(x) ((((uintptr_t)(x)) + MEM_PAGE_MASK) & ~(MEM_PAGE_MASK))
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// On Switch we dont support allocating executable memory here
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// See CodeBlock.h
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void *AllocateExecutableMemory(size_t size) {
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return nullptr;
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}
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void *AllocateMemoryPages(size_t size, uint32_t memProtFlags) {
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void* ptr = nullptr;
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size = ppsspp_round_page(size);
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ptr = memalign(MEM_PAGE_SIZE, size);
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return ptr;
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}
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void *AllocateAlignedMemory(size_t size, size_t alignment) {
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void* ptr = memalign(alignment, size);
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_assert_msg_(ptr != nullptr, "Failed to allocate aligned memory of size %lu", size);
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return ptr;
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}
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void FreeMemoryPages(void *ptr, size_t size) {
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if (!ptr)
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return;
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free(ptr);
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return;
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}
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void FreeExecutableMemory(void *ptr, size_t size) {
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return; // Not supported on Switch
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}
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void FreeAlignedMemory(void* ptr) {
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if (!ptr)
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return;
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free(ptr);
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}
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bool PlatformIsWXExclusive() {
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return false; // Switch technically is W^X but we use dual mappings instead of reprotecting the pages to allow a W and X mapping
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}
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bool ProtectMemoryPages(const void* ptr, size_t size, uint32_t memProtFlags) {
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return true;
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}
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int GetMemoryProtectPageSize() {
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return MEM_PAGE_SIZE;
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}
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#endif // PPSSPP_PLATFORM(SWITCH)
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