79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
#include "FunctionAddressProvider.h"
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#include "utils/logger.h"
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#include <coreinit/dynload.h>
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#include <function_patcher/fpatching_defines.h>
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uint32_t FunctionAddressProvider::getEffectiveAddressOfFunction(function_replacement_library_type_t library, const char *functionName) {
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uint32_t real_addr = 0;
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OSDynLoad_Module rpl_handle = nullptr;
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OSDynLoad_Error err = OS_DYNLOAD_OK;
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for (auto &rplHandle : rpl_handles) {
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if (rplHandle.library == library) {
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if (rplHandle.handle == nullptr) {
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DEBUG_FUNCTION_LINE_VERBOSE("Lets check if rpl is loaded: %s", rplHandle.rplname);
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err = OSDynLoad_IsModuleLoaded((char *) rplHandle.rplname, &rplHandle.handle);
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}
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if (err != OS_DYNLOAD_OK || !rplHandle.handle) {
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DEBUG_FUNCTION_LINE_VERBOSE("%s is not loaded yet", rplHandle.rplname, err, rplHandle.handle);
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return 0;
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}
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rpl_handle = rplHandle.handle;
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break;
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}
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}
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if (!rpl_handle) {
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DEBUG_FUNCTION_LINE_ERR("Failed to find the RPL handle for %s", functionName);
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return 0;
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}
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OSDynLoad_FindExport(rpl_handle, OS_DYNLOAD_EXPORT_FUNC, functionName, reinterpret_cast<void **>(&real_addr));
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if (!real_addr) {
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DEBUG_FUNCTION_LINE_VERBOSE("OSDynLoad_FindExport failed for %s", functionName);
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return 0;
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}
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uint32_t realAddrData = *((volatile uint32_t *) real_addr);
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if ((realAddrData & 0xFC000003) == 0x48000000) {
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auto address_diff = (uint32_t) (realAddrData & 0x01FFFFFC);
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if ((realAddrData & 0x02000000) == 0x02000000) {
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address_diff = 0xFE000000 + address_diff;
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}
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real_addr += (int32_t) address_diff;
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}
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return real_addr;
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}
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void FunctionAddressProvider::resetHandles() {
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for (auto &rplHandle : rpl_handles) {
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if (rplHandle.handle != nullptr) {
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DEBUG_FUNCTION_LINE_VERBOSE("Resetting handle for rpl: %s", rplHandle.rplname);
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}
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rplHandle.handle = nullptr;
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}
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}
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function_replacement_library_type_t FunctionAddressProvider::getTypeForHandle(OSDynLoad_Module handle) {
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for (auto &rplHandle : rpl_handles) {
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if (rplHandle.handle == handle) {
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return rplHandle.library;
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}
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}
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return LIBRARY_OTHER;
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}
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bool FunctionAddressProvider::resetHandle(OSDynLoad_Module handle) {
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for (auto &rplHandle : rpl_handles) {
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if (rplHandle.handle == handle) {
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rplHandle.handle = nullptr;
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return true;
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}
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}
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return false;
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}
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