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Atmosphere/stratosphere/loader/source/ldr_arguments.cpp
2019-06-27 17:37:33 -07:00

77 lines
2.2 KiB
C++

/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ldr_arguments.hpp"
namespace sts::ldr::args {
namespace {
/* Convenience definitions. */
constexpr ncm::TitleId FreeTitleId = {};
constexpr size_t MaxArgumentInfos = 10;
/* Global storage. */
ArgumentInfo g_argument_infos[MaxArgumentInfos];
/* Helpers. */
ArgumentInfo *FindArgumentInfo(ncm::TitleId title_id) {
for (size_t i = 0; i < MaxArgumentInfos; i++) {
if (g_argument_infos[i].title_id == title_id) {
return &g_argument_infos[i];
}
}
return nullptr;
}
ArgumentInfo *FindFreeArgumentInfo() {
return FindArgumentInfo(FreeTitleId);
}
}
/* API. */
const ArgumentInfo *Get(ncm::TitleId title_id) {
return FindArgumentInfo(title_id);
}
Result Set(ncm::TitleId title_id, const void *args, size_t args_size) {
if (args_size >= ArgumentSizeMax) {
return ResultLoaderTooLongArgument;
}
ArgumentInfo *arg_info = FindArgumentInfo(title_id);
if (arg_info == nullptr) {
arg_info = FindFreeArgumentInfo();
}
if (arg_info == nullptr) {
return ResultLoaderTooManyArguments;
}
arg_info->title_id = title_id;
arg_info->args_size = args_size;
std::memcpy(arg_info->args, args, args_size);
return ResultSuccess;
}
Result Clear() {
for (size_t i = 0; i < MaxArgumentInfos; i++) {
g_argument_infos[i].title_id = FreeTitleId;
}
return ResultSuccess;
}
}