core:

- fix IRQ handler for ARM7 when use external SWI (big speedup);

desmume/src/MMU.cpp

@@ -1074,7 +1074,7 @@ static void execdiv() {
 }
 
 // TODO: 
-// NAND flash support (used in Made in Ore/WariWare D.I.Y.)
+// NAND flash support (used in Made in Ore/WarioWare D.I.Y.)
 template<int PROCNUM>
 void FASTCALL MMU_writeToGCControl(u32 val)
 {
@@ -1146,7 +1146,9 @@ void FASTCALL MMU_writeToGCControl(u32 val)
 		case 0x85:
 			{
 				card.address = 0;
-				card.transfer_count = 0x80;
+				//card.transfer_count = 0x80;
+				// needs for WarioWare D.I.Y - ingame saves don't work but game don't freeze in main menu
+				card.transfer_count = 0;
 			}
 			break;
 
@@ -3657,8 +3659,7 @@ void FASTCALL _MMU_ARM7_write08(u32 adr, u8 val)
 				switch(val)
 				{
 					case 0xC0: NDS_Sleep(); break;
-					// TODO: its break firmware booting? but BIG speedup with ext. SWI
+					case 0x80: armcpu_Wait4IRQ(&NDS_ARM7); break;
-					//case 0x80: NDS_ARM7.waitIRQ = 1; break;
 					default: break;
 				}
 				break;

desmume/src/armcpu.cpp

@@ -371,6 +371,35 @@ u32 armcpu_switchMode(armcpu_t *armcpu, u8 mode)
 	return oldmode;
 }
 
+u32 armcpu_Wait4IRQ(armcpu_t *cpu)
+{
+	u32 instructAddr = cpu->instruct_adr;
+	// on the first call, wirq is not set
+	if(cpu->wirq)
+	{
+		// check wether an irq was issued
+		if(!cpu->waitIRQ)
+		{
+			cpu->waitIRQ = 0;
+			cpu->wirq = 0;
+			return 1;   // return execution
+		}
+		// otherwise, repeat this instruction
+		cpu->R[15] = instructAddr;
+		cpu->next_instruction = instructAddr;
+		return 1;
+	}
+
+	// first run, set us into waiting state
+	cpu->waitIRQ = 1;
+	cpu->wirq = 1;
+	// and set next instruction to repeat this
+	cpu->R[15] = instructAddr;
+	cpu->next_instruction = instructAddr;
+	// only SWI set IME to 1
+	return 1;
+}
+
 template<u32 PROCNUM>
 FORCEINLINE static u32 armcpu_prefetch()
 {
@@ -554,7 +583,8 @@ BOOL armcpu_irqException(armcpu_t *armcpu)
 
 u32 TRAPUNDEF(armcpu_t* cpu)
 {
-	LOG("Undefined instruction: %#08X PC = %#08X \n", cpu->instruction, cpu->instruct_adr);
+	INFO("ARM%c: Undefined instruction: 0x%08X (%s) PC=0x%08X\n", cpu->proc_ID?'7':'9', cpu->instruction, decodeIntruction(false, cpu->instruction), cpu->instruct_adr);
+
 	if (((cpu->intVector != 0) ^ (cpu->proc_ID == ARMCPU_ARM9)))
 	{
 		armcpu_exception(&NDS_ARM9,0x04);
@@ -592,59 +622,60 @@ u32 armcpu_exec()
 	//this assert is annoying. but sometimes it is handy.
 	//assert(ARMPROC.instruct_adr!=0x00000000);
 //#ifdef DEVELOPER
-//	if ((((ARMPROC.instruct_adr & 0x0F000000) == 0x0F000000) && (PROCNUM == 0)) ||
+#if 0
-//		(((ARMPROC.instruct_adr & 0x0F000000) == 0x00000000) && (PROCNUM == 1)))
+	if ((((ARMPROC.instruct_adr & 0x0F000000) == 0x0F000000) && (PROCNUM == 0)) ||
-//	{
+		(((ARMPROC.instruct_adr & 0x0F000000) == 0x00000000) && (PROCNUM == 1)))
-//		switch (ARMPROC.instruct_adr & 0xFFFF)
+	{
-//		{
+		switch (ARMPROC.instruct_adr & 0xFFFF)
-//			case 0x00000000:
+		{
-//				printf("BIOS%c: Reset!!!\n", PROCNUM?'7':'9');
+			case 0x00000000:
+				printf("BIOS%c: Reset!!!\n", PROCNUM?'7':'9');
+				emu_halt();
+				break;
+			case 0x00000004:
+				printf("BIOS%c: Undefined instruction\n", PROCNUM?'7':'9');
 				//emu_halt();
-//				break;
+				break;
-//			case 0x00000004:
+			case 0x00000008:
-//				printf("BIOS%c: Undefined instruction\n", PROCNUM?'7':'9');
+				//printf("BIOS%c: SWI\n", PROCNUM?'7':'9');
-//				//emu_halt();
+				break;
-//				break;
+			case 0x0000000C:
-//			case 0x00000008:
+				printf("BIOS%c: Prefetch Abort!!!\n", PROCNUM?'7':'9');
-//				//printf("BIOS%c: SWI\n", PROCNUM?'7':'9');
+				//emu_halt();
-//				break;
+				break;
-//			case 0x0000000C:
+			case 0x00000010:
-//				printf("BIOS%c: Prefetch Abort!!!\n", PROCNUM?'7':'9');
+				//printf("BIOS%c: Data Abort!!!\n", PROCNUM?'7':'9');
-//				//emu_halt();
+				//emu_halt();
-//				break;
+				break;
-//			case 0x00000010:
+			case 0x00000014:
-//				//printf("BIOS%c: Data Abort!!!\n", PROCNUM?'7':'9');
+				printf("BIOS%c: Reserved!!!\n", PROCNUM?'7':'9');
-//				//emu_halt();
+				break;
-//				break;
+			case 0x00000018:
-//			case 0x00000014:
+				//printf("BIOS%c: IRQ\n", PROCNUM?'7':'9');
-//				printf("BIOS%c: Reserved!!!\n", PROCNUM?'7':'9');
+				break;
-//				break;
+			case 0x0000001C:
-//			case 0x00000018:
+				printf("BIOS%c: Fast IRQ\n", PROCNUM?'7':'9');
-//				//printf("BIOS%c: IRQ\n", PROCNUM?'7':'9');
+				break;
-//				break;
+		}
-//			case 0x0000001C:
+	}
-//				printf("BIOS%c: Fast IRQ\n", PROCNUM?'7':'9');
+#endif
-//				break;
+
-//		}
+#ifdef GDB_STUB
-//	}
+	if (ARMPROC.stalled) {
-//#endif
+		return STALLED_CYCLE_COUNT;
-//
+	}
-//#ifdef GDB_STUB
+
-//	if (ARMPROC.stalled) {
+	/* check for interrupts */
-//		return STALLED_CYCLE_COUNT;
+	if (ARMPROC.irq_flag) {
-//	}
+		armcpu_irqException(&ARMPROC);
-//
+	}
-//	/* check for interrupts */
+
-//	if (ARMPROC.irq_flag) {
+	cFetch = armcpu_prefetch(&ARMPROC);
-//		armcpu_irqException(&ARMPROC);
+
-//	}
+	if (ARMPROC.stalled) {
-//
+		return MMU_fetchExecuteCycles<PROCNUM>(cExecute, cFetch);
-//	cFetch = armcpu_prefetch(&ARMPROC);
+	}
-//
+#endif
-//	if (ARMPROC.stalled) {
-//		return MMU_fetchExecuteCycles<PROCNUM>(cExecute, cFetch);
-//	}
-//#endif
 
 	//cFetch = armcpu_prefetch(&ARMPROC);
 

desmume/src/armcpu.h

@@ -253,6 +253,7 @@ BOOL armcpu_irqException(armcpu_t *armcpu);
 BOOL armcpu_flagIrq( armcpu_t *armcpu);
 void armcpu_exception(armcpu_t *cpu, u32 number);
 u32 TRAPUNDEF(armcpu_t* cpu);
+u32 armcpu_Wait4IRQ(armcpu_t *cpu);
 
 extern armcpu_t NDS_ARM7;
 extern armcpu_t NDS_ARM9;