diff --git a/base/runtime/os_specific.odin b/base/runtime/os_specific.odin
index 2807eaf90..b6c1288d0 100644
--- a/base/runtime/os_specific.odin
+++ b/base/runtime/os_specific.odin
@@ -5,3 +5,7 @@ _OS_Errno :: distinct int
 stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	return _stderr_write(data)
 }
+
+exit :: proc "contextless" (code: int) -> ! {
+	_exit(code)
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_bsd.odin b/base/runtime/os_specific_bsd.odin
index 466001ada..1c3a04e92 100644
--- a/base/runtime/os_specific_bsd.odin
+++ b/base/runtime/os_specific_bsd.odin
@@ -24,3 +24,14 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	}
 	return int(ret), 0
 }
+
+
+foreign import libc "system:c"
+
+_exit :: proc "contextless" (code: int) -> ! {
+	@(default_calling_convention="c")
+	foreign libc {
+		exit :: proc(status: i32) -> ! ---
+	}
+	exit(i32(code))
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_darwin.odin b/base/runtime/os_specific_darwin.odin
index 907899d7c..37315240f 100644
--- a/base/runtime/os_specific_darwin.odin
+++ b/base/runtime/os_specific_darwin.odin
@@ -26,3 +26,13 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 		return 0, _OS_Errno(__error()^)
 	}
 }
+
+foreign import libc "system:System"
+
+_exit :: proc "contextless" (code: int) -> ! {
+	@(default_calling_convention="c")
+	foreign libc {
+		exit :: proc(status: i32) -> ! ---
+	}
+	exit(i32(code))
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_freestanding.odin b/base/runtime/os_specific_freestanding.odin
index f975f61b8..b5a5fb146 100644
--- a/base/runtime/os_specific_freestanding.odin
+++ b/base/runtime/os_specific_freestanding.odin
@@ -6,3 +6,7 @@ package runtime
 _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	return 0, -1
 }
+
+_exit :: proc "contextless" (code: int) -> ! {
+	trap()
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_haiku.odin b/base/runtime/os_specific_haiku.odin
index 0d1ec7a03..9c9608aab 100644
--- a/base/runtime/os_specific_haiku.odin
+++ b/base/runtime/os_specific_haiku.odin
@@ -19,3 +19,9 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	}
 	return int(ret), 0
 }
+
+
+
+_exit :: proc "contextless" (code: int) -> ! {
+
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_js.odin b/base/runtime/os_specific_js.odin
index f1d12c808..bd88b1871 100644
--- a/base/runtime/os_specific_js.odin
+++ b/base/runtime/os_specific_js.odin
@@ -11,3 +11,8 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	write(1, data)
 	return len(data), 0
 }
+
+
+_exit :: proc "contextless" (code: int) -> ! {
+	trap()
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_linux.odin b/base/runtime/os_specific_linux.odin
index d7b7371a7..e24454bf3 100644
--- a/base/runtime/os_specific_linux.odin
+++ b/base/runtime/os_specific_linux.odin
@@ -24,3 +24,17 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 	}
 	return ret, 0
 }
+
+
+_exit :: proc "contextless" (code: int) -> ! {
+	SYS_exit_group ::
+		231 when ODIN_ARCH == .amd64 else
+		248 when ODIN_ARCH == .arm32 else
+		94  when ODIN_ARCH == .arm64 else
+		252 when ODIN_ARCH == .i386  else
+		94  when ODIN_ARCH == .riscv64 else
+		0
+
+	intrinsics.syscall(uintptr(SYS_exit_group), i32(code))
+	unreachable()
+}
diff --git a/base/runtime/os_specific_orca.odin b/base/runtime/os_specific_orca.odin
index 876d7d44b..491edcfa4 100644
--- a/base/runtime/os_specific_orca.odin
+++ b/base/runtime/os_specific_orca.odin
@@ -41,3 +41,8 @@ _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
 
 	return len(data), 0
 }
+
+
+_exit :: proc "contextless" (code: int) -> ! {
+	trap()
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_wasi.odin b/base/runtime/os_specific_wasi.odin
index aa562050c..194034865 100644
--- a/base/runtime/os_specific_wasi.odin
+++ b/base/runtime/os_specific_wasi.odin
@@ -23,6 +23,9 @@ foreign wasi {
 		argv:     [^]cstring,
 		argv_buf: [^]byte,
 	) -> u16 ---
+
+	@(private="file")
+	proc_exit :: proc(rval: u32) -> ! ---
 }
 
 _stderr_write :: proc "contextless" (data: []byte) -> (int, _OS_Errno) {
@@ -53,3 +56,8 @@ _wasi_setup_args :: proc() {
 		delete(args_buf)
 	}
 }
+
+
+_exit :: proc "contextless" (code: int) -> ! {
+	proc_exit(u32(code))
+}
\ No newline at end of file
diff --git a/base/runtime/os_specific_windows.odin b/base/runtime/os_specific_windows.odin
index b966193ca..c5ca1e4c5 100644
--- a/base/runtime/os_specific_windows.odin
+++ b/base/runtime/os_specific_windows.odin
@@ -14,6 +14,8 @@ foreign kernel32 {
 	SetHandleInformation :: proc(hObject: rawptr, dwMask: u32, dwFlags: u32) -> b32 ---
 	WriteFile            :: proc(hFile: rawptr, lpBuffer: rawptr, nNumberOfBytesToWrite: u32, lpNumberOfBytesWritten: ^u32, lpOverlapped: rawptr) -> b32 ---
 	GetLastError         :: proc() -> u32 ---
+
+	ExitProcess          :: proc(code: u32) -> ! ---
 }
 
 _stderr_write :: proc "contextless" (data: []byte) -> (n: int, err: _OS_Errno) #no_bounds_check {
@@ -49,3 +51,7 @@ _stderr_write :: proc "contextless" (data: []byte) -> (n: int, err: _OS_Errno) #
 	n = int(total_write)
 	return
 }
+
+_exit :: proc "contextless" (code: int) -> ! {
+	ExitProcess(u32(code))
+}
\ No newline at end of file