[debugger] Prevent reads from affecting emulation

drhelius · drhelius · commit 18c17cdb980b · 2026-05-03T18:37:39.000+02:00
diff --git a/platforms/shared/desktop/emu.cpp b/platforms/shared/desktop/emu.cpp
@@ -1178,7 +1178,7 @@ static void debug_step_instruction(void)
 
     emu_debug_halt_step_frames_pending = 0;
 
-    if (processor->Halted() || (emu_get_core()->GetMemory()->Read(pc) == 0x76))
+    if (processor->Halted() || (emu_get_core()->GetMemory()->DebugRetrieve(pc) == 0x76))
     {
         processor->AddRunToBreakpoint(pc + 1);
         emu_debug_halt_step_frames_pending = kDebugHaltStepMaxFrames;

Original file line number	Diff line number	Diff line change
`@@ -1178,7 +1178,7 @@ static void debug_step_instruction(void)`
`1178`	`1178`
`1179`	`1179`	`emu_debug_halt_step_frames_pending = 0;`
`1180`	`1180`
`1181`		`- if (processor->Halted() \|\| (emu_get_core()->GetMemory()->Read(pc) == 0x76))`
	`1181`	`+ if (processor->Halted() \|\| (emu_get_core()->GetMemory()->DebugRetrieve(pc) == 0x76))`
`1182`	`1182`	`{`
`1183`	`1183`	`processor->AddRunToBreakpoint(pc + 1);`
`1184`	`1184`	`emu_debug_halt_step_frames_pending = kDebugHaltStepMaxFrames;`