From d7669270b31585d427adb9b449727866160ca767 Mon Sep 17 00:00:00 2001
From: Matthias Kruk <m@m10k.eu>
Date: Thu, 2 Jan 2020 16:32:58 +0900
Subject: [PATCH] Add _exit() syscall to klibc

---
 include/unistd.h         |  1 +
 kernel/klibc/posixcall.S | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/unistd.h b/include/unistd.h
index 4b87539..1724114 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -4,6 +4,7 @@
 #include <sys/types.h>
 #include <corax/types.h>
 
+extern void _exit(int);
 extern pid_t fork(void);
 extern pid_t vfork(void);
 extern int execfve(void*, const char**, const char**);
diff --git a/kernel/klibc/posixcall.S b/kernel/klibc/posixcall.S
index faa10f7..ecc6004 100644
--- a/kernel/klibc/posixcall.S
+++ b/kernel/klibc/posixcall.S
@@ -7,6 +7,7 @@
 
 	.section .text
 
+	.global _exit
 	.global fork
 	.global execfve
 	.global brk
@@ -14,6 +15,16 @@
 	.global mmap
 	.global munmap
 
+_exit:
+	pushl	%ebx
+
+	movl	$SYS_EXIT, %eax
+	movl	8(%esp), %ebx
+	int		$SYSCALL_POSIX
+
+	popl	%ebx
+	ret
+
 fork:
 	pushl	%ebx
 
-- 
2.47.3