FunctionPatcherModule/source/utils/utils.cpp

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#include <coreinit/cache.h>
#include <coreinit/memorymap.h>
#include <kernel/kernel.h>
bool ReadFromPhysicalAddress(uint32_t srcPhys, uint32_t *out) {
if (!out) {
return false;
}
// Check if patched instruction is still loaded.
volatile uint32_t currentInstruction;
auto currentInstructionAddress = (uint32_t) &currentInstruction;
uint32_t currentInstructionAddressPhys;
if (currentInstructionAddress < 0x00800000 || currentInstructionAddress >= 0x01000000) {
currentInstructionAddressPhys = (uint32_t) OSEffectiveToPhysical(currentInstructionAddress);
} else {
currentInstructionAddressPhys = currentInstructionAddress + 0x30800000 - 0x00800000;
}
if (currentInstructionAddressPhys == 0) {
return false;
}
// Save the instruction we will replace.
KernelCopyData(currentInstructionAddressPhys, srcPhys, 4);
DCFlushRange((void *) &currentInstruction, 4);
*out = currentInstruction;
return true;
}