libkernel/source/utils.cpp

#include "kernel/kernel.h"
#include <coreinit/cache.h>
#include <coreinit/memorymap.h>

void KernelReadPTE(uint32_t outputAddr, int32_t length) {
    auto dst     = (uint32_t) OSEffectiveToPhysical(outputAddr);
    uint32_t src = 0xFFE20000;
    ICInvalidateRange(&dst, 4);
    DCFlushRange(&dst, 4);
    DCFlushRange(&src, 4);
    KernelCopyData(dst, src, length);
    DCFlushRange((void *) outputAddr, length);
    ICInvalidateRange((void *) outputAddr, length);
}

void KernelWritePTE(uint32_t inputAddr, int32_t length) {
    uint32_t dst = 0xFFE20000;
    auto src     = (uint32_t) OSEffectiveToPhysical(inputAddr);
    ICInvalidateRange(&src, 4);
    DCFlushRange(&src, 4);
    KernelCopyData(dst, src, length);
}

void KernelNOPAtPhysicalAddress(uint32_t addr) {
    uint32_t dst = 0x60000000;
    ICInvalidateRange(&dst, 4);
    DCFlushRange(&dst, 4);
    KernelCopyData(addr, (uint32_t) OSEffectiveToPhysical((uint32_t) &dst), 4);
}