From c2a40a81041fda772de51b78cd6262d3ca2e55b7 Mon Sep 17 00:00:00 2001
From: Patrick Wuttke <mewin@mewin.de>
Date: Sat, 3 Feb 2024 01:05:26 +0100
Subject: [PATCH] Added exit() function and renamed stdlib file to libc.a so
 GCC is happy.

---
 targets/_any/kernel/include/os/syscall.hpp |  2 +-
 targets/_any/stdlib/SConscript             |  2 +-
 targets/_any/stdlib/src/stdlib.cpp         | 10 ++++++++++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/targets/_any/kernel/include/os/syscall.hpp b/targets/_any/kernel/include/os/syscall.hpp
index 157186c..60c887b 100644
--- a/targets/_any/kernel/include/os/syscall.hpp
+++ b/targets/_any/kernel/include/os/syscall.hpp
@@ -18,7 +18,7 @@ enum class Syscall : std::uint64_t
 
 void setupSyscall() noexcept;
 
-template<typename TParam0, typename TParam1, typename TParam2>
+template<typename TParam0 = int, typename TParam1 = int, typename TParam2 = int>
 inline void doSyscall(Syscall cmd, TParam0 param0 = 0, TParam1 param1 = 0, TParam2 param2 = 0) noexcept
 {
     register std::uint64_t r8 asm("r8") = param2;
diff --git a/targets/_any/stdlib/SConscript b/targets/_any/stdlib/SConscript
index c240239..88bbb07 100644
--- a/targets/_any/stdlib/SConscript
+++ b/targets/_any/stdlib/SConscript
@@ -28,7 +28,7 @@ if env['BUILD_TARGET'] == 'stdlib':
     stdlib_env.Append(CPPPATH = ['#targets/_any/bastl/include', '#targets/_any/stdlib/include', '#targets/_any/kernel/include'])
 
     lib_stdlib = stdlib_env.StaticLibrary(
-        target = stdlib_env.File('#stdlib/stdlib.a'),
+        target = stdlib_env.File('#stdlib/libc.a'),
         source = stdlib_sources
     )
     crti_o = stdlib_env.Object(target = '#stdlib/crti.o', source = stdlib_env['CRTI_PATH'])
diff --git a/targets/_any/stdlib/src/stdlib.cpp b/targets/_any/stdlib/src/stdlib.cpp
index 09920a6..25cb100 100644
--- a/targets/_any/stdlib/src/stdlib.cpp
+++ b/targets/_any/stdlib/src/stdlib.cpp
@@ -3,6 +3,7 @@
 
 #include <stddef.h>
 #include "os/memory.hpp"
+#include "os/syscall.hpp"
 #include "os/tty.hpp"
 
 namespace
@@ -44,6 +45,15 @@ void abort()
     __builtin_unreachable();
 }
 
+void exit(int exitCode) noexcept
+{
+#if !defined(__baos_kernel_source__)
+    baos::doSyscall(baos::Syscall::EXIT, exitCode);
+#else
+    abort(); // no exit in kernel!
+#endif
+}
+
 void* malloc(size_t size) noexcept
 {
     if (size == 0)