kernel: syscalls

kernel-src/include/kernel/scheduler.h

@@ -14,6 +14,7 @@
 struct proc_t;
 
 typedef struct thread_t {
+	void *kernelstacktop;
 	struct thread_t *next;
 	struct thread_t *prev;
 	struct proc_t *proc;
@@ -21,7 +22,6 @@ typedef struct thread_t {
 	context_t context;
 	extracontext_t extracontext;
 	void *kernelstack;
-	void *kernelstacktop;
 	size_t kernelstacksize;
 	vmmcontext_t *vmmctx;
 	tid_t tid;

kernel-src/include/kernel/syscalls.h

@@ -0,0 +1,11 @@
+#ifndef _SYSCALLS_H
+#define _SYSCALLS_H
+
+#include <stdint.h>
+
+typedef struct {
+	uint64_t ret;
+	uint64_t errno;
+} syscallret_t;
+
+#endif