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[MemArena] Add designated impl for Nintendo Switch

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M4xw 2023-06-22 00:06:59 +02:00
parent 5b6bc0cea7
commit 436b55de72
1 changed files with 83 additions and 0 deletions
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Common/MemArenaHorizon.cpp Normal file
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// Copyright (C) 2023 M4xw
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
#include "ppsspp_config.h"
#if PPSSPP_PLATFORM(SWITCH)
#include <stdio.h>
#include <malloc.h> // memalign
#include <switch.h>
#include "Common/MemArena.h"
static uintptr_t memoryBase = 0;
static uintptr_t memoryCodeBase = 0;
static uintptr_t memorySrcBase = 0;
size_t MemArena::roundup(size_t x) {
return x;
}
bool MemArena::NeedsProbing() {
return false;
}
bool MemArena::GrabMemSpace(size_t size) {
return true;
}
void MemArena::ReleaseSpace() {
if (R_FAILED(svcUnmapProcessCodeMemory(envGetOwnProcessHandle(), (u64)memoryCodeBase, (u64)memorySrcBase, 0x10000000)))
printf("Failed to release view space...\n");
free((void *)memorySrcBase);
memorySrcBase = 0;
}
void *MemArena::CreateView(s64 offset, size_t size, void *base) {
Result rc = svcMapProcessMemory(base, envGetOwnProcessHandle(), (u64)(memoryCodeBase + offset), size);
if (R_FAILED(rc)) {
printf("Fatal error creating the view... base: %p offset: %p size: %p src: %p err: %d\n",
(void *)base, (void *)offset, (void *)size, (void *)(memoryCodeBase + offset), rc);
} else {
printf("Created the view... base: %p offset: %p size: %p src: %p err: %d\n",
(void *)base, (void *)offset, (void *)size, (void *)(memoryCodeBase + offset), rc);
}
return base;
}
void MemArena::ReleaseView(s64 offset, void *view, size_t size) {
if (R_FAILED(svcUnmapProcessMemory(view, envGetOwnProcessHandle(), (u64)(memoryCodeBase + offset), size)))
printf("Failed to unmap view...\n");
}
u8 *MemArena::Find4GBBase() {
memorySrcBase = (uintptr_t)memalign(0x1000, 0x10000000);
if (!memoryBase)
memoryBase = (uintptr_t)virtmemReserve(0x10000000);
if (!memoryCodeBase)
memoryCodeBase = (uintptr_t)virtmemReserve(0x10000000);
if (R_FAILED(svcMapProcessCodeMemory(envGetOwnProcessHandle(), (u64)memoryCodeBase, (u64)memorySrcBase, 0x10000000)))
printf("Failed to map memory...\n");
if (R_FAILED(svcSetProcessMemoryPermission(envGetOwnProcessHandle(), memoryCodeBase, 0x10000000, Perm_Rx)))
printf("Failed to set perms...\n");
return (u8 *)memoryBase;
}
#endif // PPSSPP_PLATFORM(SWITCH)