1 files changed, 16 insertions, 0 deletions
diff --git a/src/emu/syscall.h b/src/emu/syscall.h
new file mode 100644
index 0000000..7c7265c
--- /dev/null
+++ b/src/emu/syscall.h
@@ -0,0 +1,16 @@
+#ifndef _SYSCALL_H
+#define _SYSCALL_H
+
+/* calling convention:
+ * - pass syscall number in GPR[1]
+ * - pass arguments in GPR[2]-GPR[9]
+ * - return code is passed in GPR[2]
+ */
+
+#define SYS_exit  0x00
+#define SYS_read  0x01
+#define SYS_write 0x02
+
+void do_syscall(void);
+
+#endif