add return values to main loop

1 files changed, 8 insertions, 5 deletions

diff --git a/ops/common.h b/ops/common.h
index 546b064..6b124b3 100644
--- a/ops/common.h
+++ b/ops/common.h
@@ -6,19 +6,22 @@
 typedef unsigned long reg_t;
 typedef signed long sreg_t;
 
-typedef void (*op_call)(reg_t *sp, reg_t a, reg_t x, reg_t y, reg_t o);
+typedef reg_t (*op_call)(reg_t *sp, reg_t a, reg_t x, reg_t y, reg_t o);
 
 #define NEXT_OP(sp, a, x, y, o) \
-	((op_call)(&__next_op))((sp), (a), (x), (y), (o));
+	return ((op_call)(&__next_op))((sp), (a), (x), (y), (o));
 
-#define JUMP(target, sp, a, x, y, o) \
+#define CALL(target, sp, a, x, y, o) \
 	((op_call)(target))((sp), (a), (x), (y), (o));
 
+#define JUMP(target, sp, a, x, y, o) \
+	return CALL(target, sp, a, x, y, o);
+
 #define BRANCH(target, cond, sp, a, x, y, o)                        \
-	((op_call)((cond) ? (void *)(target) : (void *)&__next_op)) \
+	return ((op_call)((cond) ? (void *)(target) : (void *)&__next_op)) \
 	((sp), (a), (x), (y), (o));                                 \
 
-#define DEFINE_OP(name) void _op(reg_t *sp, reg_t a, reg_t x, reg_t y, reg_t o)
+#define DEFINE_OP(name) reg_t _op(reg_t *sp, reg_t a, reg_t x, reg_t y, reg_t o)
 
 #define UNUSED(x) (void)(x);