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Boot: Move StateFlags from Boot_WiiWAD to Boot

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It's not specific to WADs. The BS2 emulation boot code will also need
to update the state file.

Move the struct to Boot and add a helper function that will handle
reading + computing the checksum + writing the state file.
This commit is contained in:
Léo Lam
2017-08-06 19:09:45 +08:00
parent 7a74e8ad0b
commit 8489d9da90
3 changed files with 58 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
Source/Core/Core/Boot/Boot.cpp
View File

@ -5,7 +5,10 @@
#include "Core/Boot/Boot.h"
#include <algorithm>
#include <array>
#include <cstring>
#include <memory>
#include <numeric>
#include <optional>
#include <string>
#include <unordered_set>
@ -25,6 +28,7 @@
#include "Core/Boot/DolReader.h"
#include "Core/Boot/ElfReader.h"
#include "Core/CommonTitles.h"
#include "Core/ConfigManager.h"
#include "Core/FifoPlayer/FifoPlayer.h"
#include "Core/HLE/HLE.h"
@ -418,3 +422,38 @@ BootExecutableReader::BootExecutableReader(const std::vector<u8>& bytes) : m_byt
}
BootExecutableReader::~BootExecutableReader() = default;
void StateFlags::UpdateChecksum()
{
constexpr size_t length_in_bytes = sizeof(StateFlags) - 4;
constexpr size_t num_elements = length_in_bytes / sizeof(u32);
std::array<u32, num_elements> flag_data;
std::memcpy(flag_data.data(), &flags, length_in_bytes);
checksum = std::accumulate(flag_data.cbegin(), flag_data.cend(), 0U);
}
void UpdateStateFlags(std::function<void(StateFlags*)> update_function)
{
const std::string file_path =
Common::GetTitleDataPath(Titles::SYSTEM_MENU, Common::FROM_SESSION_ROOT) + WII_STATE;
File::IOFile file;
StateFlags state;
if (File::Exists(file_path))
{
file.Open(file_path, "r+b");
file.ReadBytes(&state, sizeof(state));
}
else
{
File::CreateFullPath(file_path);
file.Open(file_path, "a+b");
memset(&state, 0, sizeof(state));
}
update_function(&state);
state.UpdateChecksum();
file.Seek(0, SEEK_SET);
file.WriteBytes(&state, sizeof(state));
}