mirror of
https://github.com/wiiu-env/WUMSLoader.git
synced 2024-06-01 08:08:50 +02:00
113 lines
4.5 KiB
C++
113 lines
4.5 KiB
C++
#include <vector>
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#include <string>
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#include <string.h>
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#include <stdint.h>
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#include <coreinit/dynload.h>
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#include <coreinit/cache.h>
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#include <nsysnet/socket.h>
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#include <coreinit/memorymap.h>
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#include <map>
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#include "../../source/common/dynamic_linking_defines.h"
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#include "../../source/common/module_defines.h"
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#include "../../source/module/RelocationData.h"
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#include "../../source/module/ModuleData.h"
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#include "ModuleDataPersistence.h"
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#include "ElfUtils.h"
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#include "../../source/common/relocation_defines.h"
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#include "kernel/kernel_utils.h"
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#include "hooks_patcher_static.h"
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#include "utils/logger.h"
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#include "utils/dynamic.h"
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#define gModuleData ((module_information_t *) (0x00880000))
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uint8_t gFunctionsPatched __attribute__((section(".data"))) = 0;
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extern "C" void doStart(int argc, char **argv);
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// We need to wrap it to make sure the main function is called AFTER our code.
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// The compiler tries to optimize this otherwise and calling the main function earlier
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extern "C" int _start(int argc, char **argv) {
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InitFunctionPointers();
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socket_lib_init();
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log_init();
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doStart(argc, argv);
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DEBUG_FUNCTION_LINE("Call real one\n");
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return ((int (*)(int, char **)) (*(unsigned int *) 0x1005E040))(argc, argv);
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}
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bool doRelocation(std::vector<RelocationData> &relocData, relocation_trampolin_entry_t *tramp_data, uint32_t tramp_length) {
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std::map<std::string, OSDynLoad_Module> moduleCache;
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for (auto const &curReloc : relocData) {
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std::string functionName = curReloc.getName();
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std::string rplName = curReloc.getImportRPLInformation().getName();
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int32_t isData = curReloc.getImportRPLInformation().isData();
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OSDynLoad_Module rplHandle = 0;
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if (moduleCache.count(rplName) == 0) {
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OSDynLoad_Acquire(rplName.c_str(), &rplHandle);
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moduleCache[rplName] = rplHandle;
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}
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rplHandle = moduleCache.at(rplName);
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uint32_t functionAddress = 0;
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OSDynLoad_FindExport(rplHandle, isData, functionName.c_str(), (void **) &functionAddress);
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if (functionAddress == 0) {
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DEBUG_FUNCTION_LINE("Failed to find function\n");
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return false;
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}
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if (!ElfUtils::elfLinkOne(curReloc.getType(), curReloc.getOffset(), curReloc.getAddend(), (uint32_t) curReloc.getDestination(), functionAddress, tramp_data, tramp_length, RELOC_TYPE_IMPORT)) {
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DEBUG_FUNCTION_LINE("Relocation failed\n");
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return false;
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}
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}
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DCFlushRange(tramp_data, tramp_length * sizeof(relocation_trampolin_entry_t));
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ICInvalidateRange(tramp_data, tramp_length * sizeof(relocation_trampolin_entry_t));
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return true;
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}
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bool ResolveRelocations() {
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std::vector<ModuleData> loadedModules = ModuleDataPersistence::loadModuleData(gModuleData);
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bool wasSuccessful = true;
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uint32_t count = 0;
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for (auto const &curModule : loadedModules) {
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if (wasSuccessful) {
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std::vector<RelocationData> relocData = curModule.getRelocationDataList();
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if (!doRelocation(relocData, gModuleData->trampolines, DYN_LINK_TRAMPOLIN_LIST_LENGTH)) {
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DEBUG_FUNCTION_LINE("FAIL\n");
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wasSuccessful = false;
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}
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}
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if (curModule.getBSSAddr() != 0) {
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DEBUG_FUNCTION_LINE("memset .bss %08X (%d)\n", curModule.getBSSAddr(), curModule.getBSSSize());
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memset((void *) curModule.getBSSAddr(), 0, curModule.getBSSSize());
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}
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if (curModule.getSBSSAddr() != 0) {
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DEBUG_FUNCTION_LINE("memset .sbss %08X (%d)\n", curModule.getSBSSAddr(), curModule.getSBSSSize());
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memset((void *) curModule.getSBSSAddr(), 0, curModule.getSBSSSize());
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}
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}
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if (count > 0) {
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DCFlushRange((void *) 0x00800000, 0x00800000);
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ICInvalidateRange((void *) 0x00800000, 0x00800000);
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}
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return wasSuccessful;
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}
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extern "C" void doStart(int argc, char **argv) {
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if (!gFunctionsPatched) {
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gFunctionsPatched = 1;
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kernelInitialize();
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PatchInvidualMethodHooks(method_hooks_hooks_static, method_hooks_size_hooks_static, method_calls_hooks_static);
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}
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DEBUG_FUNCTION_LINE("Resolve relocations\n");
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DEBUG_FUNCTION_LINE("Number of modules %d\n", gModuleData->number_used_modules);
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ResolveRelocations();
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for (int i = 0; i < gModuleData->number_used_modules; i++) {
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DEBUG_FUNCTION_LINE("About to call %08X\n", gModuleData->module_data[i].entrypoint);
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int ret = ((int (*)(int, char **)) (gModuleData->module_data[i].entrypoint))(argc, argv);
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DEBUG_FUNCTION_LINE("return code was %d\n", ret);
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}
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}
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