From db92a4f5629ffbb5efff3741da340a7909c1ee83 Mon Sep 17 00:00:00 2001
From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 26 Sep 2018 06:35:32 +0100
Subject: [PATCH] easier to #define USING_NOREGS if the opcode does not use any
 registers

---
 id_regs.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/id_regs.py b/id_regs.py
index 3f5290d..830ef95 100644
--- a/id_regs.py
+++ b/id_regs.py
@@ -58,6 +58,8 @@ def find_registers(fname):
             if p.startswith('WRITE_'):
                 p = p[6:]
             res.append('#define USING_REG_%s' % p)
+    if not res:
+        return '#define USING_NOREGS'
     return '\n'.join(res)
 
 if __name__ == '__main__':
-- 
2.30.2