mirror of
https://github.com/libretro/scummvm.git
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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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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, either version 3 of the License, or
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* (at your option) any later version.
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*
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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 for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#define FORBIDDEN_SYMBOL_ALLOW_ALL
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#include "common/scummsys.h"
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#if defined(DYNAMIC_MODULES) && defined(__3DS__)
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#include "backends/plugins/3ds/3ds-provider.h"
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#include "backends/plugins/elf/arm-loader.h"
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#include "common/debug.h"
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#include <3ds.h>
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extern uint32 __end__; // End of the main program in memory. Set by the linker.
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static uint32 alignUp(uint32 ptr, uint32 align) {
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return (ptr + align - 1) & ~(align - 1);
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}
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class CTRDLObject : public ARMDLObject {
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protected:
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static const uint32 kPageSize = 0x1000;
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uint32 _segmentHeapAddress;
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void flushDataCache(void *ptr, uint32 len) const override {
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svcFlushProcessDataCache(CUR_PROCESS_HANDLE, (uint32)ptr, len);
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}
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void protectMemory(void *ptr, uint32 len, int prot) const override {
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debug(2, "elfloader: Protecting memory at %p, len %d with %d", ptr, len, prot);
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uint32 ctrFlags = 0;
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if (prot & PF_R) ctrFlags |= MEMPERM_READ;
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if (prot & PF_W) ctrFlags |= MEMPERM_WRITE;
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if (prot & PF_X) ctrFlags |= MEMPERM_EXECUTE;
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// The kernel expects the range to be aligned to page boundaries
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len = alignUp(len, kPageSize);
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Handle currentHandle;
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svcDuplicateHandle(¤tHandle, CUR_PROCESS_HANDLE);
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svcControlProcessMemory(currentHandle, (uint32)ptr, 0, len, MEMOP_PROT, ctrFlags);
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svcCloseHandle(currentHandle);
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}
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};
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Plugin *CTRPluginProvider::createPlugin(const Common::FSNode &node) const {
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return new TemplatedELFPlugin<CTRDLObject>(node.getPath());
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}
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#endif // defined(DYNAMIC_MODULES) && defined(__3DS__)
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