Handout

kernel/syscall/stub.h

@@ -0,0 +1,24 @@
+#pragma once
+#include "types.h"
+
+namespace Syscall {
+/*! \brief Syscall IDs
+ *  \note the syscall number must correspond to the values in the syscall stub!
+ */
+enum class ID : size_t {
+	TEST = 0,
+};
+}  // namespace Syscall
+
+/// \brief Syscall stub
+extern "C" ssize_t sys_call(Syscall::ID id, size_t p1, size_t p2, size_t p3,
+							size_t p4, size_t p5);
+extern "C" ssize_t sys_safe_call(Syscall::ID id, size_t p1, size_t p2,
+								 size_t p3, size_t p4, size_t p5);
+
+// Interrupt based syscalls
+[[gnu::always_inline]] static inline ssize_t sys_test(size_t p1, size_t p2,
+													  size_t p3, size_t p4,
+													  size_t p5) {
+	return sys_call(Syscall::ID::TEST, p1, p2, p3, p4, p5);
+}