The-Homebrew-Cloud
/
WUMSLoader
mirror of https://github.com/wiiu-env/WUMSLoader.git
2
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
WUMSLoader/relocator/src/entry.cpp

293 lines
13 KiB
C++
Raw Blame History

#include <vector>
#include <string>
#include <cstring>
#include <cstdint>
#include <coreinit/dynload.h>
#include <coreinit/cache.h>
#include <map>
#include <algorithm>
#include <coreinit/memexpheap.h>
#include "../../source/module/RelocationData.h"
#include "../../source/module/ModuleData.h"
#include "ModuleDataPersistence.h"
#include "ElfUtils.h"
#include "utils/dynamic.h"
#include "globals.h"
#include "hooks.h"
#include "utils/memory.h"
MEMHeapHandle gHeapHandle __attribute__((section(".data"))) = nullptr;
uint8_t gFunctionsPatched __attribute__((section(".data"))) = 0;
uint8_t gInitCalled __attribute__((section(".data"))) = 0;
extern "C" void socket_lib_init();
std::vector<ModuleData> OrderModulesByDependencies(const std::vector<ModuleData> &loadedModules);
extern "C" void doStart(int argc, char **argv);
// We need to wrap it to make sure the main function is called AFTER our code.
// The compiler tries to optimize this otherwise and calling the main function earlier
extern "C" int _start(int argc, char **argv) {
InitFunctionPointers();
static uint8_t ucSetupRequired = 1;
if (ucSetupRequired) {
gHeapHandle = MEMCreateExpHeapEx((void *) (MEMORY_REGION_USABLE_HEAP_START), MEMORY_REGION_USABLE_HEAP_END - MEMORY_REGION_USABLE_HEAP_START, 0);
ucSetupRequired = 0;
}
socket_lib_init();
log_init();
doStart(argc, argv);
DEBUG_FUNCTION_LINE_VERBOSE("Call real one\n");
log_deinit();
return ((int (*)(int, char **)) (*(unsigned int *) 0x1005E040))(argc, argv);
}
bool doRelocation(std::vector<RelocationData> &relocData, relocation_trampolin_entry_t *tramp_data, uint32_t tramp_length, bool skipAllocReplacement) {
std::map<std::string, OSDynLoad_Module> moduleCache;
for (auto const &curReloc : relocData) {
std::string functionName = curReloc.getName();
std::string rplName = curReloc.getImportRPLInformation().getName();
uint32_t functionAddress = 0;
for (uint32_t i = 0; i < MAXIMUM_MODULES; i++) {
if (rplName == gModuleData->module_data[i].module_export_name) {
export_data_t *exportEntries = gModuleData->module_data[i].export_entries;
for (uint32_t j = 0; j < EXPORT_ENTRY_LIST_LENGTH; j++) {
if (functionName == exportEntries[j].name) {
functionAddress = (uint32_t) exportEntries[j].address;
}
}
}
}
if (!skipAllocReplacement) {
if (functionName == "MEMAllocFromDefaultHeap") {
functionAddress = reinterpret_cast<uint32_t>(&MEMAlloc);
} else if (functionName == "MEMAllocFromDefaultHeapEx") {
functionAddress = reinterpret_cast<uint32_t>(&MEMAllocEx);
} else if (functionName == "MEMFreeToDefaultHeap") {
functionAddress = reinterpret_cast<uint32_t>(&MEMFree);
}
}
if (functionAddress == 0) {
int32_t isData = curReloc.getImportRPLInformation().isData();
OSDynLoad_Module rplHandle = nullptr;
if (moduleCache.count(rplName) == 0) {
OSDynLoad_Error err = OSDynLoad_IsModuleLoaded(rplName.c_str(), &rplHandle);
if (err != OS_DYNLOAD_OK || rplHandle == nullptr) {
DEBUG_FUNCTION_LINE_VERBOSE("%s is not yet loaded\n", rplName.c_str());
// only acquire if not already loaded.
err = OSDynLoad_Acquire(rplName.c_str(), &rplHandle);
if (err != OS_DYNLOAD_OK) {
DEBUG_FUNCTION_LINE("Failed to acquire %s\n", rplName.c_str());
//return false;
}
}
moduleCache[rplName] = rplHandle;
}
rplHandle = moduleCache.at(rplName);
OSDynLoad_FindExport(rplHandle, isData, functionName.c_str(), (void **) &functionAddress);
if (functionAddress == 0) {
OSFatal_printf("Failed to find export %s of %s", functionName.c_str(), rplName.c_str());
return false;
}
}
if (!ElfUtils::elfLinkOne(curReloc.getType(), curReloc.getOffset(), curReloc.getAddend(), (uint32_t) curReloc.getDestination(), functionAddress, tramp_data, tramp_length, RELOC_TYPE_IMPORT)) {
DEBUG_FUNCTION_LINE("Relocation failed\n");
return false;
}
}
DCFlushRange(tramp_data, tramp_length * sizeof(relocation_trampolin_entry_t));
ICInvalidateRange(tramp_data, tramp_length * sizeof(relocation_trampolin_entry_t));
return true;
}
bool ResolveRelocations(std::vector<ModuleData> &loadedModules, bool skipMemoryMappingModule) {
bool wasSuccessful = true;
for (auto &curModule : loadedModules) {
DEBUG_FUNCTION_LINE_VERBOSE("Let's do the relocations for %s\n", curModule.getExportName().c_str());
if (wasSuccessful) {
std::vector<RelocationData> relocData = curModule.getRelocationDataList();
// On first usage we can't redirect the alloc functions to our custom heap
// because threads can't run it on it. In order to patch the kernel
// to fully support our memory region, we have to run the FunctionPatcher and MemoryMapping
// once with the default heap. Afterwards we can just rely on the custom heap.
bool skipAllocFunction = skipMemoryMappingModule && (curModule.getExportName() == "homebrew_memorymapping" || curModule.getExportName() == "homebrew_functionpatcher");
DEBUG_FUNCTION_LINE_VERBOSE("Skip alloc replace? %d\n", skipAllocFunction);
if (!doRelocation(relocData, gModuleData->trampolines, DYN_LINK_TRAMPOLIN_LIST_LENGTH, skipAllocFunction)) {
DEBUG_FUNCTION_LINE("FAIL\n");
wasSuccessful = false;
curModule.relocationsDone = false;
}
curModule.relocationsDone = true;
}
if (curModule.getBSSAddr() != 0) {
// DEBUG_FUNCTION_LINE("memset .bss %08X (%d)\n", curModule.getBSSAddr(), curModule.getBSSSize());
// memset((void *) curModule.getBSSAddr(), 0, curModule.getBSSSize());
}
if (curModule.getSBSSAddr() != 0) {
// DEBUG_FUNCTION_LINE("memset .sbss %08X (%d)\n", curModule.getSBSSAddr(), curModule.getSBSSSize());
// memset((void *) curModule.getSBSSAddr(), 0, curModule.getSBSSSize());
}
}
DCFlushRange((void *) MEMORY_REGION_START, MEMORY_REGION_SIZE);
ICInvalidateRange((void *) MEMORY_REGION_START, MEMORY_REGION_SIZE);
return wasSuccessful;
}
extern "C" void doStart(int argc, char **argv) {
if (!gFunctionsPatched) {
gFunctionsPatched = 1;
}
DEBUG_FUNCTION_LINE("Loading module data\n");
std::vector<ModuleData> loadedModulesUnordered = ModuleDataPersistence::loadModuleData(gModuleData);
std::vector<ModuleData> loadedModules = OrderModulesByDependencies(loadedModulesUnordered);
bool applicationEndHookLoaded = false;
for (auto &curModule : loadedModules) {
if (curModule.getExportName() == "homebrew_applicationendshook") {
DEBUG_FUNCTION_LINE_VERBOSE("We have ApplicationEndsHook Module!\n");
applicationEndHookLoaded = true;
break;
}
}
// Make sure WUMS_HOOK_APPLICATION_ENDS and WUMS_HOOK_FINI_WUT are called
for (auto &curModule : loadedModules) {
for (auto &curHook : curModule.getHookDataList()) {
if (curHook.getType() == WUMS_HOOK_APPLICATION_ENDS || curHook.getType() == WUMS_HOOK_FINI_WUT_DEVOPTAB) {
if (!applicationEndHookLoaded) {
OSFatal_printf("%s requires module homebrew_applicationendshook", curModule.getExportName().c_str());
}
}
}
}
DEBUG_FUNCTION_LINE_VERBOSE("Number of modules %d\n", gModuleData->number_used_modules);
if (!gInitCalled) {
gInitCalled = 1;
DEBUG_FUNCTION_LINE_VERBOSE("Resolve relocations without replacing alloc functions\n");
ResolveRelocations(loadedModules, true);
for (auto &curModule : loadedModules) {
if (curModule.isInitBeforeRelocationDoneHook()) {
CallHook(curModule, WUMS_HOOK_INIT_WUT_MALLOC);
CallHook(curModule, WUMS_HOOK_INIT_WUT_NEWLIB);
CallHook(curModule, WUMS_HOOK_INIT_WUT_STDCPP);
CallHook(curModule, WUMS_HOOK_INIT_WUT_DEVOPTAB);
CallHook(curModule, WUMS_HOOK_INIT_WUT_SOCKETS);
CallHook(curModule, WUMS_HOOK_INIT);
CallHook(curModule, WUMS_HOOK_FINI_WUT_SOCKETS);
CallHook(curModule, WUMS_HOOK_FINI_WUT_DEVOPTAB);
CallHook(curModule, WUMS_HOOK_FINI_WUT_STDCPP);
CallHook(curModule, WUMS_HOOK_FINI_WUT_NEWLIB);
CallHook(curModule, WUMS_HOOK_FINI_WUT_MALLOC);
}
}
DEBUG_FUNCTION_LINE_VERBOSE("Relocations done\n");
CallHook(loadedModules, WUMS_HOOK_RELOCATIONS_DONE);
for (int i = 0; i < gModuleData->number_used_modules; i++) {
if (!gModuleData->module_data[i].skipEntrypoint) {
DEBUG_FUNCTION_LINE_VERBOSE("About to call %08X\n", gModuleData->module_data[i].entrypoint);
int ret = ((int (*)(int, char **)) (gModuleData->module_data[i].entrypoint))(argc, argv);
DEBUG_FUNCTION_LINE_VERBOSE("return code was %d\n", ret);
}
}
for (auto &curModule : loadedModules) {
if (!curModule.isInitBeforeRelocationDoneHook()) {
CallHook(curModule, WUMS_HOOK_INIT_WUT_MALLOC);
CallHook(curModule, WUMS_HOOK_INIT_WUT_NEWLIB);
CallHook(curModule, WUMS_HOOK_INIT_WUT_STDCPP);
CallHook(curModule, WUMS_HOOK_INIT_WUT_DEVOPTAB);
CallHook(curModule, WUMS_HOOK_INIT_WUT_SOCKETS);
CallHook(curModule, WUMS_HOOK_INIT);
CallHook(curModule, WUMS_HOOK_FINI_WUT_SOCKETS);
CallHook(curModule, WUMS_HOOK_FINI_WUT_DEVOPTAB);
CallHook(curModule, WUMS_HOOK_FINI_WUT_STDCPP);
CallHook(curModule, WUMS_HOOK_FINI_WUT_NEWLIB);
CallHook(curModule, WUMS_HOOK_FINI_WUT_MALLOC);
}
}
} else {
DEBUG_FUNCTION_LINE_VERBOSE("Resolve relocations and replace alloc functions\n");
ResolveRelocations(loadedModules, false);
CallHook(loadedModules, WUMS_HOOK_RELOCATIONS_DONE);
}
CallHook(loadedModules, WUMS_HOOK_INIT_WUT_MALLOC);
CallHook(loadedModules, WUMS_HOOK_INIT_WUT_NEWLIB);
CallHook(loadedModules, WUMS_HOOK_INIT_WUT_STDCPP);
CallHook(loadedModules, WUMS_HOOK_INIT_WUT_DEVOPTAB);
CallHook(loadedModules, WUMS_HOOK_INIT_WUT_SOCKETS);
CallHook(loadedModules, WUMS_HOOK_APPLICATION_STARTS);
//CallHook(loadedModules, WUMS_HOOK_FINI_WUT);
}
std::vector<ModuleData> OrderModulesByDependencies(const std::vector<ModuleData> &loadedModules) {
std::vector<ModuleData> finalOrder;
std::vector<std::string> loadedModulesExportNames;
std::vector<uint32_t> loadedModulesEntrypoints;
while (true) {
bool canBreak = true;
bool weDidSomething = false;
for (auto const &curModule : loadedModules) {
if (std::find(loadedModulesEntrypoints.begin(), loadedModulesEntrypoints.end(), curModule.getEntrypoint()) != loadedModulesEntrypoints.end()) {
// DEBUG_FUNCTION_LINE("%s [%08X] is already loaded\n", curModule.getExportName().c_str(), curModule.getEntrypoint());
continue;
}
canBreak = false;
DEBUG_FUNCTION_LINE_VERBOSE("Check if we can load %s\n", curModule.getExportName().c_str());
std::vector<std::string> importsFromOtherModules;
for (const auto& curReloc: curModule.getRelocationDataList()) {
std::string curRPL = curReloc.getImportRPLInformation().getName();
if (curRPL.rfind("homebrew", 0) == 0) {
if (std::find(importsFromOtherModules.begin(), importsFromOtherModules.end(), curRPL) != importsFromOtherModules.end()) {
// is already in vector
} else {
DEBUG_FUNCTION_LINE_VERBOSE("%s is importing from %s\n", curModule.getExportName().c_str(), curRPL.c_str());
importsFromOtherModules.push_back(curRPL);
}
}
}
bool canLoad = true;
for (auto &curImportRPL : importsFromOtherModules) {
if (std::find(loadedModulesExportNames.begin(), loadedModulesExportNames.end(), curImportRPL) != loadedModulesExportNames.end()) {
} else {
DEBUG_FUNCTION_LINE_VERBOSE("We can't load the module, because %s is not loaded yet\n", curImportRPL.c_str());
canLoad = false;
break;
}
}
if (canLoad) {
weDidSomething = true;
DEBUG_FUNCTION_LINE_VERBOSE("We can load: %s\n", curModule.getExportName().c_str());
finalOrder.push_back(curModule);
loadedModulesExportNames.push_back(curModule.getExportName());
loadedModulesEntrypoints.push_back(curModule.getEntrypoint());
}
}
if (canBreak) {
break;
} else if (!weDidSomething) {
OSFatal_printf("Failed to resolve dependencies.");
}
}
return finalOrder;
}
Reference in New Issue View Git Blame Copy Permalink