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Move the loaded .rpx into the end of the memory area

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This commit is contained in:
Maschell 2020-04-27 19:01:11 +02:00
parent acc4c6cdbf
commit 8c1c3e91e3
2 changed files with 23 additions and 4 deletions
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2
src/main.cpp
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@ -64,7 +64,7 @@ extern "C" int _start(int argc, char **argv) {
uint32_t moduleDataStartAddress = ((uint32_t) gModuleData + sizeof(module_information_t));
moduleDataStartAddress = (moduleDataStartAddress + 0x10000) & 0xFFFF0000;
ModuleData * moduleData = ModuleDataFactory::load("sd:/wiiu/payload.rpx", ApplicationMemoryEnd, 0x00FFF000 - ApplicationMemoryEnd, gModuleData->trampolines, DYN_LINK_TRAMPOLIN_LIST_LENGTH);
ModuleData * moduleData = ModuleDataFactory::load("sd:/wiiu/payload.rpx", 0x00FFF000, 0x00FFF000 - ApplicationMemoryEnd, gModuleData->trampolines, DYN_LINK_TRAMPOLIN_LIST_LENGTH);
if(moduleData != NULL) {
DEBUG_FUNCTION_LINE("Loaded module data\n");
std::vector<RelocationData *> relocData = moduleData->getRelocationDataList();

25
src/module/ModuleDataFactory.cpp
View File

@ -44,7 +44,25 @@ ModuleData * ModuleDataFactory::load(std::string path, uint32_t destination_addr
uint8_t **destinations = (uint8_t **) malloc(sizeof(uint8_t *) * sec_num);
uint32_t baseOffset = destination_address;
uint32_t sizeOfModule = 0;
for(uint32_t i = 0; i < sec_num; ++i ) {
section* psec = reader.sections[i];
if (psec->get_type() == 0x80000002) {
continue;
}
if ((psec->get_type() == SHT_PROGBITS || psec->get_type() == SHT_NOBITS) && (psec->get_flags() & SHF_ALLOC)) {
sizeOfModule += psec->get_size() + 1;
}
}
if(sizeOfModule > maximum_size){
DEBUG_FUNCTION_LINE("Module is too big.");
return NULL;
}
uint32_t baseOffset = (destination_address -sizeOfModule) & 0xFFFFFF00;
uint32_t offset_text = baseOffset;
uint32_t offset_data = offset_text;
@ -87,10 +105,10 @@ ModuleData * ModuleDataFactory::load(std::string path, uint32_t destination_addr
const char* p = reader.sections[i]->get_data();
if(psec->get_type() == SHT_NOBITS) {
DEBUG_FUNCTION_LINE("memset section %s %08X to 0 (%d bytes)\n", psec->get_name().c_str(), destination, sectionSize);
DEBUG_FUNCTION_LINE("memset section %s %08X [%08X] to 0 (%d bytes)\n", psec->get_name().c_str(), destination, destination + sectionSize, sectionSize);
memset((void*) destination, 0, sectionSize);
} else if(psec->get_type() == SHT_PROGBITS) {
DEBUG_FUNCTION_LINE("Copy section %s %08X -> %08X (%d bytes)\n", psec->get_name().c_str(), p, destination, sectionSize);
DEBUG_FUNCTION_LINE("Copy section %s %08X -> %08X [%08X] (%d bytes)\n", psec->get_name().c_str(), p, destination, destination + sectionSize, sectionSize);
memcpy((void*) destination, p, sectionSize);
}
@ -241,6 +259,7 @@ bool ModuleDataFactory::linkSection(elfio& reader, uint32_t section_index, uint3
return false;
}
}
DEBUG_FUNCTION_LINE("done\n");
}
}
return true;