/*
	This file is part of Fennix Kernel.

	Fennix Kernel is free software: you can redistribute it and/or
	modify it under the terms of the GNU General Public License as
	published by the Free Software Foundation, either version 3 of
	the License, or (at your option) any later version.

	Fennix Kernel is distributed in the hope that 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/

#include <syscalls.hpp>

#include <memory.hpp>
#include <lock.hpp>
#include <exec.hpp>
#include <errno.h>
#include <debug.h>

#include "../../syscalls.h"
#include "../../kernel.h"

using Tasking::TCB;
using Tasking::TaskState::Zombie;

/* https://pubs.opengroup.org/onlinepubs/009604499/functions/exit.html */
__noreturn void sys_exit(SysFrm *, int status)
{
	TCB *t = thisThread;

	trace("Userspace thread %s(%d) exited with code %d (%#x)",
		  t->Name,
		  t->ID, status,
		  status < 0 ? -status : status);

	t->SetState(Zombie);
	t->SetExitCode(status);
	while (true)
		t->GetContext()->Yield();
	__builtin_unreachable();
}