110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2020 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/kernel/xmodule.h"
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#include "xenia/base/byte_stream.h"
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#include "xenia/base/logging.h"
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#include "xenia/base/string.h"
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#include "xenia/kernel/kernel_state.h"
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#include "xenia/kernel/user_module.h"
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namespace xe {
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namespace kernel {
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XModule::XModule(KernelState* kernel_state, ModuleType module_type)
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: XObject(kernel_state, kObjectType),
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module_type_(module_type),
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processor_module_(nullptr),
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hmodule_ptr_(0) {
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// Loader data (HMODULE)
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hmodule_ptr_ = memory()->SystemHeapAlloc(sizeof(X_LDR_DATA_TABLE_ENTRY));
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// Hijack the checksum field to store our kernel object handle.
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auto ldr_data =
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memory()->TranslateVirtual<X_LDR_DATA_TABLE_ENTRY*>(hmodule_ptr_);
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ldr_data->checksum = handle();
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}
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XModule::~XModule() {
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kernel_state_->UnregisterModule(this);
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// Destroy the loader data.
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memory()->SystemHeapFree(hmodule_ptr_);
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}
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bool XModule::Matches(const std::string_view name) const {
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return xe::utf8::equal_case(xe::utf8::find_name_from_guest_path(path()),
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name) ||
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xe::utf8::equal_case(this->name(), name) ||
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xe::utf8::equal_case(path(), name);
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} // namespace kernel
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void XModule::OnLoad() { kernel_state_->RegisterModule(this); }
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void XModule::OnUnload() { kernel_state_->UnregisterModule(this); }
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X_STATUS XModule::GetSection(const std::string_view name,
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uint32_t* out_section_data,
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uint32_t* out_section_size) {
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return X_STATUS_UNSUCCESSFUL;
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}
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object_ref<XModule> XModule::GetFromHModule(KernelState* kernel_state,
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void* hmodule) {
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// Grab the object from our stashed kernel handle
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return kernel_state->object_table()->LookupObject<XModule>(
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GetHandleFromHModule(hmodule));
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}
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uint32_t XModule::GetHandleFromHModule(void* hmodule) {
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auto ldr_data = reinterpret_cast<X_LDR_DATA_TABLE_ENTRY*>(hmodule);
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return ldr_data->checksum;
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}
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bool XModule::Save(ByteStream* stream) {
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XELOGD("XModule {:08X} ({})", handle(), path());
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stream->Write('XMOD');
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stream->Write(path());
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stream->Write(hmodule_ptr_);
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if (!SaveObject(stream)) {
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return false;
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}
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return true;
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}
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object_ref<XModule> XModule::Restore(KernelState* kernel_state,
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ByteStream* stream) {
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if (stream->Read<uint32_t>() != 'XMOD') {
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return nullptr;
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}
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auto path = stream->Read<std::string>();
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auto hmodule_ptr = stream->Read<uint32_t>();
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// Can only save user modules at the moment, so just redirect.
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// TODO: Find a way to call RestoreObject here before UserModule::Restore.
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auto module = UserModule::Restore(kernel_state, stream, path);
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if (!module) {
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return nullptr;
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}
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XELOGD("XModule {:08X} ({})", module->handle(), module->path());
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module->hmodule_ptr_ = hmodule_ptr;
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return module;
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}
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} // namespace kernel
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} // namespace xe
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