added first CPU specific optimizations

c64/aliases/,aliases_config.s

@@ -0,0 +1,61 @@
+
+	// Various configuration dependent aliases/macros/checks
+
+
+
+	// Check that memory model configuration is correct
+
+{
+	.var selected = 0;
+
+#if CONFIG_MEMORY_MODEL_38K
+	.eval selected++
+#endif
+#if CONFIG_MEMORY_MODEL_60K
+	.eval selected++
+#endif
+
+	.if (selected != 1) .error "Please select exactly one CONFIG_MEMORY_MODEL_* option" 
+}
+
+
+
+	// Check that processor configuration is correct
+
+{
+	.var selected = 0;
+
+#if CONFIG_CPU_MOS_6502
+	.eval selected++
+#endif
+#if CONFIG_CPU_WDC_65C02
+	.eval selected++
+#endif
+#if CONFIG_CPU_WDC_65816
+	.eval selected++
+#endif
+
+	.if (selected != 1) .error "Please select exactly one CONFIG_CPU_* option" 
+}
+
+
+
+	// Handle processor configuration
+
+#if CONFIG_CPU_WDC_65C02 || CONFIG_CPU_WDC_65816
+
+#define HAS_BCD_SAFE_INTERRUPTS
+#define HAS_BCD_SAFE_RESET
+
+	.pseudocommand phx { .byte $DA }
+	.pseudocommand phy { .byte $5A }
+	.pseudocommand plx { .byte $FA }
+	.pseudocommand ply { .byte $7A }
+
+#endif
+
+	// Handle misc configuration entrues
+
+#if CONFIG_BCD_SAFE_INTERRUPTS
+#define HAS_BCD_SAFE_INTERRUPTS
+#endif