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Set a custom OSDynLoad Allocator when processing relocations

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This commit is contained in:
Maschell 2022-10-03 22:04:38 +02:00
parent 28cefca560
commit 6555a8138f
2 changed files with 33 additions and 0 deletions
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31
wumsloader/src/utils/RelocationUtils.cpp
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@ -1,13 +1,42 @@
#include "RelocationUtils.h"
#include "globals.h"
#include "malloc.h"
#include "utils/ElfUtils.h"
#include "utils/memory.h"
#include <coreinit/cache.h>
#include <coreinit/dynload.h>
static OSDynLoad_Error CustomDynLoadAlloc(int32_t size, int32_t align, void **outAddr) {
if (!outAddr) {
return OS_DYNLOAD_INVALID_ALLOCATOR_PTR;
}
if (align >= 0 && align < 4) {
align = 4;
} else if (align < 0 && align > -4) {
align = -4;
}
if (!(*outAddr = memalign(align, size))) {
return OS_DYNLOAD_OUT_OF_MEMORY;
}
return OS_DYNLOAD_OK;
}
static void CustomDynLoadFree(void *addr) {
free(addr);
}
bool ResolveRelocations(std::vector<std::shared_ptr<ModuleData>> &loadedModules, bool skipMemoryMappingModule) {
bool wasSuccessful = true;
OSDynLoadAllocFn prevDynLoadAlloc = nullptr;
OSDynLoadFreeFn prevDynLoadFree = nullptr;
OSDynLoad_GetAllocator(&prevDynLoadAlloc, &prevDynLoadFree);
OSDynLoad_SetAllocator(CustomDynLoadAlloc, CustomDynLoadFree);
for (auto &curModule : loadedModules) {
DEBUG_FUNCTION_LINE("Let's do the relocations for %s", curModule->getExportName().c_str());
@ -25,6 +54,8 @@ bool ResolveRelocations(std::vector<std::shared_ptr<ModuleData>> &loadedModules,
OSFatal("Failed to do Reloations");
}
}
OSDynLoad_SetAllocator(prevDynLoadAlloc, prevDynLoadFree);
DCFlushRange((void *) MEMORY_REGION_START, MEMORY_REGION_SIZE);
ICInvalidateRange((void *) MEMORY_REGION_START, MEMORY_REGION_SIZE);
return wasSuccessful;

2
wumsloader/src/utils/imports.h
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@ -34,6 +34,8 @@ IMPORT(OSSignalCond);
IMPORT(MEMAllocFromDefaultHeapEx);
IMPORT(MEMFreeToDefaultHeap);
IMPORT(OSSwapAtomic);
IMPORT(OSDynLoad_GetAllocator);
IMPORT(OSDynLoad_SetAllocator);
IMPORT(FSTimeToCalendarTime);
IMPORT(FSInit);