daedalus/Source/OSHLE/patch_timer_hle.inl

#define TEST_DISABLE_TIMER_FUNCS DAEDALUS_PROFILE(__FUNCTION__);

//*****************************************************************************
//
//*****************************************************************************
u32 Patch___osSetTimerIntr()
{
TEST_DISABLE_TIMER_FUNCS
	s64 TimeLo = (s64)gGPR[REG_a1]._s32_0;
	//s64 qwTimeHi = (s64)(s32)gGPR[REG_a0];

	s64 count = (s64)gCPUState.CPUControl[C0_COUNT]._s32;

	Write32Bits(VAR_ADDRESS(osSystemLastCount), (u32)count);

	s64 sum = (s64)(s32)((s32)count + (s32)TimeLo);

	CPU_SetCompare((u32)sum);

	return PATCH_RET_JR_RA;
}

//*****************************************************************************
//
//*****************************************************************************
u32 Patch___osInsertTimer()
{
TEST_DISABLE_TIMER_FUNCS
	u32 NewTimer    = gGPR[REG_a0]._u32_0;
	u32 TopTimer    = Read32Bits(VAR_ADDRESS(osTopTimer));
	u32 InsertTimer = Read32Bits(TopTimer + 0x00);	// Read next

	u8 * pNewTimerBase	  = (u8 *)ReadAddress(NewTimer);
	u8 * pInsertTimerBase = (u8 *)ReadAddress(InsertTimer);

	u64 NewValue    = QuickRead64Bits(pNewTimerBase, 0x10);	// Check ordering is correct?!
	u64 InsertValue = QuickRead64Bits(pInsertTimerBase, 0x10);
#ifdef DAEDALUS_ENABLE_ASSERTS
	DAEDALUS_ASSERT( InsertTimer, "osInsertTimer with NULL insert timer" );
	#endif
	/*
	if ( InsertTimer == 0 )
	{
		// What gives?
		DBGConsole_Msg( 0, "[W__osInsertTimer with NULL insert timer" );

		// We can quit, because we've not written anything
		return PATCH_RET_NOT_PROCESSED0(__osInsertTimer);
	}
	*/
	while (InsertValue < NewValue)
	{
		// Decrease by the pause for this timer
		NewValue -= InsertValue;

		InsertTimer = QuickRead32Bits(pInsertTimerBase, 0x0);	// Read next timer
		pInsertTimerBase = (u8*)ReadAddress(InsertTimer);	// keep InsertTimer base pointer updated
		InsertValue = QuickRead64Bits(pInsertTimerBase, 0x10);

		if (InsertTimer == TopTimer)	// At the end of the list?
			break;
	}

	/// Save the modified time value
	QuickWrite64Bits(pNewTimerBase, 0x10, NewValue);

	// Inserting before InsertTimer

	// Modify InsertTimer's values if this is not the sentinel node
	if (InsertTimer != TopTimer)
	{
		InsertValue -= NewValue;

		QuickWrite64Bits(pInsertTimerBase, 0x10, InsertValue);
	}

	// pNewTimer->next = pInsertTimer
	QuickWrite32Bits(pNewTimerBase, 0x00, InsertTimer);

	// pNewTimer->prev = pInsertTimer->prev
	u32 InsertTimerPrev = QuickRead32Bits(pInsertTimerBase, 0x04);
	QuickWrite32Bits(pNewTimerBase, 0x04, InsertTimerPrev);

	// pInsertTimer->prev->next = pNewTimer
	Write32Bits(InsertTimerPrev + 0x00, NewTimer);

	// pInsertTimer->prev = pNewTimer
	QuickWrite32Bits(pInsertTimerBase, 0x04, NewTimer);

	gGPR[REG_v0]._s64 = (s64)(s32)(NewValue >> 32);
	gGPR[REG_v1]._s64 = (s64)(s32)((u32)NewValue);

	return PATCH_RET_JR_RA;
}

//*****************************************************************************
//
//*****************************************************************************
u32 Patch___osTimerServicesInit_Mario()
{
TEST_DISABLE_TIMER_FUNCS

	// TimeHi/Lo share the same base addr by an offset of 4 bytes, perphaps they are the same u64 type?
	// This avoids using VAR_ADDRESS(osSystemTimeLo) which is NULL for Killer Instinct..
	u8 * pTimeBase	 = (u8 *)ReadAddress(VAR_ADDRESS(osSystemTimeHi));

#ifdef DAEDALUS_DEBUG_CONSOLE
	DBGConsole_Msg(0, "Initialising Timer Services");
	#endif

	QuickWrite32Bits(pTimeBase, 0x0, 0);	// TimeHi
	QuickWrite32Bits(pTimeBase, 0x4, 0);	// TimeLo

	Write32Bits(VAR_ADDRESS(osSystemCount), 0);
	Write32Bits(VAR_ADDRESS(osFrameCount), 0);

	u32 timer = Read32Bits(VAR_ADDRESS(osTopTimer));

	// Get base from OSTimer struct
	u8 * pTimerBase	 = (u8 *)ReadAddress(timer);

	// Make list empty
	QuickWrite32Bits(pTimerBase, offsetof(OSTimer, next), timer);
	QuickWrite32Bits(pTimerBase, offsetof(OSTimer, prev), timer);

	QuickWrite64Bits(pTimerBase, offsetof(OSTimer, interval), 0);
	QuickWrite64Bits(pTimerBase, offsetof(OSTimer, value), 0);
	QuickWrite64Bits(pTimerBase, offsetof(OSTimer, mq), 0);
	QuickWrite64Bits(pTimerBase, offsetof(OSTimer, msg), 0);

	return PATCH_RET_JR_RA;
}

//*****************************************************************************
//
//*****************************************************************************
// Same as above, but optimised
u32 Patch___osTimerServicesInit_Rugrats()
{
TEST_DISABLE_TIMER_FUNCS
	return Patch___osTimerServicesInit_Mario();
}

//*****************************************************************************
//
//*****************************************************************************
u32 Patch_osSetTime()
{
TEST_DISABLE_TIMER_FUNCS

	//DBGConsole_Msg(0, "osSetTime(0x%08x%08x)", TimeHi, TimeLo);

	u8 * pTimeBase	 = (u8 *)ReadAddress(VAR_ADDRESS(osSystemTimeHi));

	QuickWrite32Bits(pTimeBase, 0x0, gGPR[REG_a1]._u32_0);	// TimeHi
	QuickWrite32Bits(pTimeBase, 0x4, gGPR[REG_a0]._u32_0);	// TimeLo

	return PATCH_RET_JR_RA;
}

//*****************************************************************************
//
//*****************************************************************************
u32 Patch_osGetTime()
{
TEST_DISABLE_TIMER_FUNCS
	u8 * pTimeBase = (u8 *)ReadAddress(VAR_ADDRESS(osSystemTimeHi));

	u32 LastCount  = Read32Bits(VAR_ADDRESS(osSystemCount));
	u32 TimeLo	   = QuickRead32Bits(pTimeBase, 0x4);
	u32 TimeHi	   = QuickRead32Bits(pTimeBase, 0x0);

	u32 count	   = gCPUState.CPUControl[C0_COUNT]._u32;

	TimeLo += count - LastCount;		// Increase by elapsed time

	if (LastCount > count)				// If an overflow has occurred, increase top timer
		TimeHi++;

	gGPR[REG_v0]._s64 = (s64)(s32)TimeHi;
	gGPR[REG_v1]._s64 = (s64)(s32)TimeLo;

	return PATCH_RET_JR_RA;
}

//*****************************************************************************
//
//*****************************************************************************
//ToDo : Implement
u32 Patch_osSetTimer()
{
	return PATCH_RET_NOT_PROCESSED;
}