initial commit

1 files changed, 24 insertions, 0 deletions

diff --git a/ops/common.h b/ops/common.h
new file mode 100644
index 0000000..b447aab
--- /dev/null
+++ b/ops/common.h
@@ -0,0 +1,24 @@
+#ifndef OPS_COMMON_H
+#define OPS_COMMON_H
+
+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);
+
+#define NEXT_OP(sp, a, x, y, o) \
+	((op_call)(&&_next_op))((sp), (a), (x), (y), (o)); _next_op: (void)1;
+
+#define JUMP(target, sp, a, x, y, o) \
+	((op_call)(target))((sp), (a), (x), (y), (o));
+
+#define BRANCH(target, cond, sp, a, x, y, o)                        \
+	((op_call)((cond) ? (void *)(target) : (void *)&&_next_op)) \
+	((sp), (a), (x), (y), (o));                                 \
+_next_op: (void)1;
+
+#define DEFINE_OP(name) void name(reg_t *sp, reg_t a, reg_t x, reg_t y, reg_t o)
+
+#define UNUSED(x) (void)(x);
+
+#endif /* OPS_COMMON_H */