Turn debugging on and off based on debugger window active status

A2Mac/DebuggerWindowController.swift

@@ -31,6 +31,7 @@ class DebuggerWindowController: NSWindowController, NSWindowDelegate {
     required init?(coder: NSCoder) {
         super.init(coder: coder)
         DebuggerWindowController.shared = self
+        m6502_dbg_init()
     }
 
 
@@ -39,8 +40,6 @@ class DebuggerWindowController: NSWindowController, NSWindowDelegate {
         if isWindowFullscreen {
             window?.toggleFullScreen(self)
         }
-
-        m6502_dbg_init()
     }
 
 
@@ -57,6 +56,7 @@ class DebuggerWindowController: NSWindowController, NSWindowDelegate {
     }
 
     func windowWillClose(_ notification: Notification) {
+        m6502_dbg_off()
         DebuggerWindowController.shared = nil
     }
 

src/cpu/6502.c

@@ -40,6 +40,7 @@
 #include <time.h>
 #include "6502.h"
 #include "6502_bp.h"
+#include "6502_debugger.h"
 #include "speaker.h"
 
 
@@ -112,16 +113,11 @@ m6502_t m6502 = {
     
     0,      // lastIO
     0,      // ecoSpindown
-    
-    0,      // trace
-    0,      // step
-    0,      // brk
-    0,      // rts
-    0,      // bra
-    0,      // bra_true
-    0,      // bra_false
-    0,      // compile
-    
+
+    0,      // debugger.on
+    0xFF,   // debugger.SP
+    0,      // debugger.wMask
+
     HALT,   // IF
 };
 
@@ -423,10 +419,7 @@ void m6502_Debug(void) {
     m6502.lastIO = 0;
     m6502.interrupt = NO_INT; // TODO: This should be taken care by the interrupt handler
 
-    m6502.debugger.on = 1;
-    m6502.debugger.mask.hlt = 1;
-    m6502.debugger.mask.brk = 1;
-    m6502.debugger.mask.inv = 1;
+    m6502_dbg_on();
 
     if( diskAccelerator_count ) {
         if( --diskAccelerator_count <= 0 ) {
@@ -443,7 +436,7 @@ void m6502_Debug(void) {
             case HALT:
                 if (m6502.debugger.mask.hlt) {
                     cpuState = cpuState_halted;
-                    m6502.debugger.wMask = 0;
+//                    m6502.debugger.wMask = 0;
                     return;
                 }
                 break;
@@ -451,7 +444,7 @@ void m6502_Debug(void) {
             case BREAK:
                 if (m6502.debugger.mask.brk) {
                     cpuState = cpuState_halted;
-                    m6502.debugger.wMask = 0;
+//                    m6502.debugger.wMask = 0;
                     return;
                 }
                 break;
@@ -459,7 +452,7 @@ void m6502_Debug(void) {
             case IRQ:
                 if (m6502.debugger.mask.irq) {
                     cpuState = cpuState_halted;
-                    m6502.debugger.wMask = 0;
+//                    m6502.debugger.wMask = 0;
                     return;
                 }
                 break;
@@ -467,7 +460,7 @@ void m6502_Debug(void) {
             case NMI:
                 if (m6502.debugger.mask.nmi) {
                     cpuState = cpuState_halted;
-                    m6502.debugger.wMask = 0;
+//                    m6502.debugger.wMask = 0;
                     return;
                 }
                 break;
@@ -475,7 +468,7 @@ void m6502_Debug(void) {
             case INV:
                 if (m6502.debugger.mask.inv) {
                     cpuState = cpuState_halted;
-                    m6502.debugger.wMask = 0;
+//                    m6502.debugger.wMask = 0;
                     return;
                 }
                 break;
@@ -485,7 +478,7 @@ void m6502_Debug(void) {
                 if (m6502.debugger.mask.out) {
                     if ( m6502.SP >= m6502.debugger.SP ) {
                         cpuState = cpuState_halted;
-                        m6502.debugger.wMask = 0;
+//                        m6502.debugger.wMask = 0;
                         return;
                     }
                 }
@@ -512,8 +505,8 @@ void m6502_Debug(void) {
 
         if ( m6502_dbg_bp_is_exists(m6502.PC) ) {
             cpuState = cpuState_halted;
-            m6502.debugger.wMask = 0;
-            m6502.debugger.on = 0;
+//            m6502.debugger.wMask = 0;
+//            m6502.debugger.on = 0;
             m6502.interrupt = BREAKPOINT;
             return;
         }

src/cpu/6502_bp.c

@@ -30,6 +30,7 @@
 
 #include <string.h>
 #include <stdlib.h>
+#include "6502.h"
 #include "6502_bp.h"
 
 /// Array of addresses of active breakpoints
@@ -239,9 +240,3 @@ void m6502_dbg_bp_del_all(void) {
 }
 
 
-/// Initialize Breakpoints
-void m6502_dbg_init(void) {
-    m6502_dbg_bp_del_all();
-}
-
-

src/cpu/6502_bp.h

@@ -15,7 +15,6 @@
 extern uint16_t breakpoints[DEBUG_MAX_BREAKPOINTS];
 extern int bp_last_idx;
 
-extern void m6502_dbg_init(void);
 extern int m6502_dbg_bp_add(uint16_t addr);
 extern void m6502_dbg_bp_del(uint16_t addr);
 extern void m6502_dbg_bp_del_all(void);

src/cpu/6502_debugger.c

@@ -76,6 +76,7 @@ typedef struct {
 
 #include "6502_debugger.h"
 #include "6502_instructions.h"
+#include "6502_bp.h"
 
 INLINE int m6502_Disass_1_Instr(void) {
 
@@ -94,4 +95,27 @@ INLINE int m6502_Disass_1_Instr(void) {
     return 2;
 }
 
+/// Turn On Debugger
+void m6502_dbg_on(void) {
+    m6502.debugger.on = 1;
+}
+
+
+/// Turn Off Debugger
+void m6502_dbg_off(void) {
+    m6502.debugger.on = 0;
+}
+
+
+/// Initialize Breakpoints
+void m6502_dbg_init(void) {
+    m6502_dbg_on();
+    m6502.debugger.wMask = 0;
+    m6502.debugger.mask.hlt = 1;
+    m6502.debugger.mask.brk = 1;
+    m6502.debugger.mask.inv = 1;
+    m6502.debugger.SP = 0xFF;
+    m6502_dbg_bp_del_all();
+}
+
 

src/cpu/6502_debugger.h

@@ -12,6 +12,9 @@
 
 extern uint16_t disass_addr;
 extern int m6502_Disass_1_Instr(void);
+extern void m6502_dbg_on(void);
+extern void m6502_dbg_off(void);
+extern void m6502_dbg_init(void);
 
 
 #endif /* _6502_debugger_h */