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Atmosphere/libraries/libstratosphere/source/init/init_libnx_shim.os.horizon.cpp

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2.8 KiB
C++

/*
* Copyright (c) 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>
extern "C" {
constinit u32 __nx_fs_num_sessions = 1;
constinit u32 __nx_applet_type = AppletType_None;
constinit bool __nx_fsdev_support_cwd = false;
extern int __system_argc;
extern char** __system_argv;
alignas(16) constinit u8 __nx_exception_stack[::ams::os::MemoryPageSize];
constinit u64 __nx_exception_stack_size = sizeof(__nx_exception_stack);
}
namespace ams {
namespace hos {
void InitializeForStratosphere();
}
namespace init {
void InitializeSystemModuleBeforeConstructors();
void InitializeSystemModule();
void FinalizeSystemModule();
void Startup();
}
void Main();
}
namespace {
constinit char *g_empty_argv = nullptr;
}
extern "C" void __libnx_exception_handler(ThreadExceptionDump *ctx) {
::ams::CrashHandler(ctx);
}
extern "C" void __libnx_initheap(void) {
/* Stratosphere system modules do not support newlib heap. */
}
extern "C" void __appInit(void) {
/* The very first thing all stratosphere code must do is initialize the os library. */
::ams::hos::InitializeForStratosphere();
/* Perform pre-C++ constructor init. */
::ams::init::InitializeSystemModuleBeforeConstructors();
}
extern "C" void __appExit(void) {
/* ... */
}
extern "C" void argvSetup(void) {
/* We don't use newlib argc/argv, so we can clear these. */
__system_argc = 0;
__system_argv = std::addressof(g_empty_argv);
}
extern "C" int main(int argc, char **argv) {
/* We don't use newlib argc/argv. */
AMS_UNUSED(argc, argv);
/* Perform remainder of logic with system module initialized. */
{
::ams::init::InitializeSystemModule();
ON_SCOPE_EXIT { ::ams::init::FinalizeSystemModule(); };
/* Perform miscellaneous startup. */
::ams::init::Startup();
/* Invoke ams main. */
::ams::Main();
}
}
extern "C" WEAK_SYMBOL void *__libnx_alloc(size_t) {
AMS_ABORT("__libnx_alloc was called");
}
extern "C" WEAK_SYMBOL void *__libnx_aligned_alloc(size_t, size_t) {
AMS_ABORT("__libnx_aligned_alloc was called");
}
extern "C" WEAK_SYMBOL void __libnx_free(void *) {
AMS_ABORT("__libnx_free was called");
}