Leahnaya/WiiUPluginLoaderBackend
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Patch Kernel to resolve symbols names of plugins

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This commit is contained in:
Maschell
2021-12-15 17:04:30 +01:00
parent 719ae8e4da
commit 64f78ccec4
10 changed files with 292 additions and 12 deletions
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41
source/plugin/PluginInformationFactory.cpp
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@@ -200,7 +200,44 @@ PluginInformationFactory::load(const PluginData &pluginData, MEMHeapHandle heapH
}
}
// Save the addresses for the allocated. This way we can free it again :)
// Get the symbol for functions.
Elf_Half n = reader.sections.size();
for (Elf_Half i = 0; i < n; ++i) {
section *sec = reader.sections[i];
if (SHT_SYMTAB == sec->get_type()) {
symbol_section_accessor symbols(reader, sec);
auto sym_no = (uint32_t) symbols.get_symbols_num();
if (sym_no > 0) {
for (Elf_Half j = 0; j < sym_no; ++j) {
std::string name;
Elf64_Addr value = 0;
Elf_Xword size = 0;
unsigned char bind = 0;
unsigned char type = 0;
Elf_Half section = 0;
unsigned char other = 0;
if (symbols.get_symbol(j, name, value, size, bind, type, section, other)) {
if (type == STT_FUNC) { // We only care about functions.
auto sectionVal = reader.sections[section];
auto offsetVal = value - sectionVal->get_address();
auto sectionOpt = pluginInfo.getSectionInfo(sectionVal->get_name());
if (!sectionOpt.has_value()) {
continue;
}
auto finalAddress = offsetVal + sectionOpt->getAddress();
pluginInfo.addFunctionSymbolData(FunctionSymbolData(name, (void *) finalAddress, (uint32_t) size));
}
}
}
break;
}
}
}
// Save the addresses for the allocated memory. This way we can free it again :)
pluginInfo.allocatedDataMemoryAddress = data_data;
pluginInfo.allocatedTextMemoryAddress = text_data;
@@ -332,7 +369,7 @@ bool PluginInformationFactory::linkSection(const elfio &reader, uint32_t section
DEBUG_FUNCTION_LINE("NOT IMPLEMENTED: %04X", sym_section_index);
return false;
}
DEBUG_FUNCTION_LINE_VERBOSE("sym_value %08X adjusted_sym_value %08X offset %08X adjusted_offset %08X", (uint32_t) sym_value, adjusted_sym_value, (uint32_t) offset, adjusted_offset);
// DEBUG_FUNCTION_LINE_VERBOSE("sym_value %08X adjusted_sym_value %08X offset %08X adjusted_offset %08X", (uint32_t) sym_value, adjusted_sym_value, (uint32_t) offset, adjusted_offset);
if (!ElfUtils::elfLinkOne(type, adjusted_offset, addend, destination, adjusted_sym_value, trampolin_data, trampolin_data_length, RELOC_TYPE_FIXED, trampolinId)) {
DEBUG_FUNCTION_LINE("Link failed");