From ed7bbb9fb84c32ae5ce10d8ed8993dd91ab5fb37 Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Fri, 19 Dec 2014 20:34:19 -0800
Subject: [PATCH] GBA: Exit cleanly on FATAL if the port supports it

---
 CHANGES              | 1 +
 src/gba/gba-memory.c | 3 ++-
 src/gba/gba-thread.c | 4 +++-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/CHANGES b/CHANGES
index 04bd6fc8e..4c7359f3d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -8,6 +8,7 @@ Bugfixes:
  - GBA Memory: Don't call into GPIO write calls if GPIO devices are absent
 Misc:
  - Qt: Disable sync to video by default
+ - GBA: Exit cleanly on FATAL if the port supports it
 
 0.1.0: (2014-12-13)
  - Initial release
diff --git a/src/gba/gba-memory.c b/src/gba/gba-memory.c
index 02b8c035a..045f56713 100644
--- a/src/gba/gba-memory.c
+++ b/src/gba/gba-memory.c
@@ -14,6 +14,7 @@
 #include "util/memory.h"
 
 static uint32_t _popcount32(unsigned bits);
+static uint32_t _deadbeef = 0xDEADBEEF;
 
 static void GBASetActiveRegion(struct ARMCore* cpu, uint32_t region);
 static void GBAMemoryServiceDMA(struct GBA* gba, int number, struct GBADMA* info);
@@ -157,7 +158,7 @@ static void GBASetActiveRegion(struct ARMCore* cpu, uint32_t address) {
 		cpu->memory.activeMask = SIZE_CART0 - 1;
 		break;
 	default:
-		cpu->memory.activeRegion = 0;
+		cpu->memory.activeRegion = &_deadbeef;
 		cpu->memory.activeMask = 0;
 		GBALog(gba, GBA_LOG_FATAL, "Jumped to invalid address");
 		break;
diff --git a/src/gba/gba-thread.c b/src/gba/gba-thread.c
index 9ceeb5455..977f7c646 100644
--- a/src/gba/gba-thread.c
+++ b/src/gba/gba-thread.c
@@ -354,7 +354,9 @@ void GBAThreadEnd(struct GBAThread* threadContext) {
 		threadContext->debugger->state = DEBUGGER_EXITING;
 	}
 	threadContext->state = THREAD_EXITING;
-	threadContext->gba->cpu->halted = false;
+	if (threadContext->gba) {
+		threadContext->gba->cpu->halted = false;
+	}
 	ConditionWake(&threadContext->stateCond);
 	MutexUnlock(&threadContext->stateMutex);
 	MutexLock(&threadContext->sync.audioBufferMutex);