Atmosphere/libraries/libstratosphere/source/hos/hos_version_api.cpp
2020-05-06 22:29:07 -07:00

60 lines
1.8 KiB
C++

/*
* Copyright (c) 2018-2020 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 <stratosphere.hpp>
#include "hos_version_api_private.hpp"
namespace ams::hos {
namespace {
hos::Version g_hos_version;
bool g_has_cached;
os::Mutex g_mutex(false);
void CacheValues() {
if (__atomic_load_n(&g_has_cached, __ATOMIC_SEQ_CST)) {
return;
}
std::scoped_lock lk(g_mutex);
if (g_has_cached) {
return;
}
/* Hos version is a direct copy of target firmware, just renamed. */
g_hos_version = static_cast<hos::Version>(exosphere::GetApiInfo().GetTargetFirmware());
AMS_ABORT_UNLESS(g_hos_version <= hos::Version_Max);
__atomic_store_n(&g_has_cached, true, __ATOMIC_SEQ_CST);
}
}
::ams::hos::Version GetVersion() {
CacheValues();
return g_hos_version;
}
void SetVersionForLibnxInternal() {
const u32 hos_version_val = static_cast<u32>(hos::GetVersion());
const u32 major = (hos_version_val >> 24) & 0xFF;
const u32 minor = (hos_version_val >> 16) & 0xFF;
const u32 micro = (hos_version_val >> 8) & 0xFF;
hosversionSet(MAKEHOSVERSION(major, minor, micro));
}
}