From c2dd19bc8f469bf872ff3718af74aff45212c534 Mon Sep 17 00:00:00 2001
From: pjht <pterpstra@pterpstra.com>
Date: Fri, 8 Nov 2024 14:52:24 -0600
Subject: [PATCH] mikros: Give kernel exit code instead of calling proc_man
 directly

---
 library/std/src/sys/pal/mikros/os.rs       | 15 +++------------
 library/std/src/sys/pal/mikros/syscalls.rs |  4 ++--
 2 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/library/std/src/sys/pal/mikros/os.rs b/library/std/src/sys/pal/mikros/os.rs
index 088cfb7b474..39fcd337da5 100644
--- a/library/std/src/sys/pal/mikros/os.rs
+++ b/library/std/src/sys/pal/mikros/os.rs
@@ -1,10 +1,8 @@
-use super::unsupported;
-use crate::arch::asm;
+use super::{syscalls, unsupported};
 use crate::error::Error as StdError;
 use crate::ffi::{OsStr, OsString};
 use crate::marker::PhantomData;
-use crate::os::mikros::ipc::rpc;
-use crate::os::mikros::{Errno, syscalls};
+use crate::os::mikros::Errno;
 use crate::path::{self, PathBuf};
 use crate::{fmt, io};
 
@@ -253,14 +251,7 @@ pub fn home_dir() -> Option<PathBuf> {
 }
 
 pub fn exit(code: i32) -> ! {
-    if let Some(proc_man_pid) = syscalls::try_get_registered(3) {
-        rpc::send_call(proc_man_pid, 8, 4, &postcard::to_allocvec(&(code as u8)).unwrap())
-            .get_return();
-    };
-    unsafe {
-        asm!("int 0x80", in("rax") 1);
-    };
-    unreachable!();
+    syscalls::exit(code as u8)
 }
 
 pub fn getpid() -> u32 {
diff --git a/library/std/src/sys/pal/mikros/syscalls.rs b/library/std/src/sys/pal/mikros/syscalls.rs
index 44402276da6..a509b53d6fa 100644
--- a/library/std/src/sys/pal/mikros/syscalls.rs
+++ b/library/std/src/sys/pal/mikros/syscalls.rs
@@ -16,8 +16,8 @@ pub(crate) fn print_char(chr: char) {
     syscall1(0, chr as u64);
 }
 
-pub fn exit() -> ! {
-    syscall0(1);
+pub fn exit(code: u8) -> ! {
+    syscall1(1, code as u64);
     unreachable!();
 }