use macros for CPU-specific jumptable generation

c64/aliases/,aliases_cpu.s

@@ -42,6 +42,43 @@
 
 
 
+//
+// Macros for generating jumptables
+//
+
+
+#if !HAS_OPCODES_65C02
+
+.macro put_jumptable_lo(list)
+{
+	.for (var i = 0; i < list.size(); i++)
+	{
+		.byte mod((list.get(i) - 1), $100)
+	}
+}
+
+.macro put_jumptable_hi(list)
+{
+	.for (var i = 0; i < list.size(); i++)
+	{
+		.byte floor((list.get(i) - 1) / $100)
+	}
+}
+
+#else // HAS_OPCODES_65C02
+
+.macro put_jumptable(list)
+{
+	.for (var i = 0; i < list.size(); i++)
+	{
+		.word list.get(i)
+	}
+}
+
+#endif
+
+
+
 //
 // Trick to skip a 2-byte instruction
 //