added an exit function

added Linux syscall stubs for exit and write
adapted all tests
added a printf test
made stdio work on Linux or AbaOs syscalls

1 files changed, 19 insertions, 1 deletions

diff --git a/src/libc/stdlib.c b/src/libc/stdlib.c
index d7d4331..b4c2d84 100644
--- a/src/libc/stdlib.c
+++ b/src/libc/stdlib.c
@@ -48,11 +48,29 @@ char *itoa( int v, char *s, int base )
 	return s;
 }
 
-void abort( void )
+void __attribute__( ( noreturn ) ) exit( int status )
+{
+#ifdef OS_ABAOS
+	// TODO: this should be done on process level, terminating
+	// the process (by signalling SIGABRT for instance)
+	kernel_panic( "exited with exit code %d", status );
+#endif
+#ifdef OS_LINUX
+	syscall1( __NR_exit, status );
+#endif
+
+	// make gcc happy ("error: ‘noreturn’ function does return")
+	for( ;; );
+}
+
+void __attribute__( ( noreturn ) ) abort( void )
 {
 	// TODO: this should be done on process level, terminating
 	// the process (by signalling SIGABRT for instance)
 	kernel_panic( "aborted" );
+	
+	// make gcc happy ("error: ‘noreturn’ function does return")
+	for( ;; );
 }
 
 // TODO: we should have a global memory manager and one per