32X GDB stub commit

ares/md/m32x/sh7604.cpp

@@ -15,12 +15,12 @@ auto M32X::SH7604::unload() -> void {
 
 auto M32X::SH7604::main() -> void {
   if (GDB::server.hasActiveClient && m32x.shm.active()) {
-    if (m32x.vdp.vblank != vblank_state) {
+    if (!GDB::server.reportPC(regs.PC)) {
+      GDB::server.updateLoop();
+      return;
+    } else if (m32x.vdp.vblank && !vblank_state) {
       GDB::server.updateLoop();
-      vblank_state = m32x.vdp.vblank;
     }
-
-    if (!GDB::server.reportPC(regs.PC)) return;
   }
 
   if(!m32x.io.adapterReset) return step(1000);
@@ -76,6 +76,8 @@ auto M32X::SH7604::step(u32 clocks) -> void {
   cyclesUntilM68kSync -= clocks;
 
   m32x.vdp.framebufferWait -= min(clocks, m32x.vdp.framebufferWait);
+
+  vblank_state = m32x.vdp.vblank;
 
   if(cyclesUntilSh2Sync <= 0) {
     cyclesUntilSh2Sync = minCyclesBetweenSh2Syncs;