From d5c7105c78bd42f36f7b607f274bd1fc39244dde Mon Sep 17 00:00:00 2001
From: luigi2us <luigi2us@gmail.com>
Date: Fri, 17 Jul 2009 22:57:56 +0000
Subject: [PATCH] Zelda uCode: try to fix Super Mario Sunshine (hard since I
 don't have the game). Let's hope it'll work. If yes, we can open the
 champagne :D

(BTW: yeah, again a HandleMail() clone)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3823 8ced0084-cf51-0410-be5f-012b33b47a6e
---
 .../Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp | 94 +++++++++++++++++++
 .../Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h   | 31 +++++-
 2 files changed, 124 insertions(+), 1 deletion(-)

diff --git a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
index bfbdde2686..e98b47c42f 100644
--- a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
+++ b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
@@ -123,6 +123,8 @@ void CUCode_Zelda::HandleMail(u32 _uMail)
 {
 	if (IsLightVersion())
 		HandleMail_LightVersion(_uMail);
+	else if (IsSMSVersion())
+		HandleMail_SMSVersion(_uMail);
 	else
 		HandleMail_NormalVersion(_uMail);
 }
@@ -184,6 +186,98 @@ void CUCode_Zelda::HandleMail_LightVersion(u32 _uMail)
 	}
 }
 
+void CUCode_Zelda::HandleMail_SMSVersion(u32 _uMail)
+{
+	if (m_bSyncCmdPending)
+	{
+		if (m_bSyncInProgress)
+		{
+			m_bSyncInProgress = false;
+
+			m_SyncFlags[2] = _uMail >> 16;
+			m_SyncFlags[3] = _uMail & 0xFFFF;
+
+			m_CurBuffer++;
+
+			m_rMailHandler.PushMail(DSP_SYNC);
+			g_dspInitialize.pGenerateDSPInterrupt();
+			m_rMailHandler.PushMail(0xF355FF00 | m_CurBuffer);
+
+			if (m_CurBuffer == m_NumBuffers)
+			{
+				m_rMailHandler.PushMail(DSP_FRAME_END);
+				//g_dspInitialize.pGenerateDSPInterrupt();
+
+				soundStream->GetMixer()->SetHLEReady(true);
+				DEBUG_LOG(DSPHLE, "Update the SoundThread to be in sync");
+				soundStream->Update(); //do it in this thread to avoid sync problems
+
+				m_bSyncCmdPending = false;
+			}
+		}
+		else
+		{
+			m_bSyncInProgress = true;
+
+			m_SyncFlags[0] = _uMail >> 16;
+			m_SyncFlags[1] = _uMail & 0xFFFF;
+		}
+
+		return;
+    }
+
+	if (m_bListInProgress)
+	{
+		if (m_step < 0 || m_step >= sizeof(m_Buffer) / 4)
+			PanicAlert("m_step out of range");
+
+		((u32*)m_Buffer)[m_step] = _uMail;
+		m_step++;
+
+		if (m_step >= m_numSteps)
+		{
+			ExecuteList();
+			m_bListInProgress = false;
+		}
+
+		return;
+	}
+
+	// Here holds: m_bSyncInProgress == false && m_bListInProgress == false
+
+	if ((_uMail >> 16) == 0)
+	{
+		m_bListInProgress = true;
+		m_numSteps = _uMail;
+		m_step = 0;
+	}
+	else if ((_uMail >> 16) == 0xCDD1)			// A 0xCDD1000X mail should come right after we send a DSP_SYNCEND mail
+	{
+		// The low part of the mail tells the operation to perform
+		// Seeing as every possible operation number halts the uCode,
+		// except 3, that thing seems to be intended for debugging
+		switch (_uMail & 0xFFFF)
+		{
+		case 0x0003:		// Do nothing
+			return;
+
+		case 0x0000:		// Halt
+		case 0x0001:		// Dump memory? and halt
+		case 0x0002:		// Do something and halt
+			WARN_LOG(DSPHLE, "Zelda uCode(SMS version): received halting operation %04X", _uMail & 0xFFFF);
+			return;
+
+		default:			// Invalid (the real ucode would likely crash)
+			WARN_LOG(DSPHLE, "Zelda uCode(SMS version): received invalid operation %04X", _uMail & 0xFFFF);
+			return;
+		}
+	}
+	else
+	{
+		WARN_LOG(DSPHLE, "Zelda uCode (SMS version): unknown mail %08X", _uMail);
+	}
+}
+
 void CUCode_Zelda::HandleMail_NormalVersion(u32 _uMail)
 {
 	// WARN_LOG(DSPHLE, "Zelda uCode: Handle mail %08X", _uMail);
diff --git a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h
index 5f927b8732..0a745cc4d0 100644
--- a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h
+++ b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h
@@ -28,7 +28,8 @@
 
 union ZeldaVoicePB
 {
-	struct {
+	struct 
+	{
 		// Read-Write part
 		u16 Status;						// 0x00 | 1 = play, 0 = stop
 		u16 KeyOff;						// 0x01 | writing 1 stops voice? 
@@ -115,6 +116,18 @@ union ZeldaVoicePB
 	u16 raw[0xc0]; // WARNING-do not use on parts of the 32-bit values - they are swapped!
 };
 
+union ZeldaUnkPB
+{
+	struct
+	{
+		u16 Control;					// 0x00 | control
+		u16 Unk01;						// 0x01 | unknown
+		u32 SrcAddr;					// 0x02 | some address
+		u16 Unk04[0xC];					// 0x04 | unknown
+	};
+	u16 raw[16];
+};
+
 namespace {
     // If this miscompiles, adjust the size of ZeldaVoicePB to 0x180 bytes (0xc0 shorts).
     CompileTimeAssert<sizeof(ZeldaVoicePB) == 0x180> ensure_zpb_size_correct;
@@ -128,6 +141,7 @@ public:
 
 	void HandleMail(u32 _uMail);
 	void HandleMail_LightVersion(u32 _uMail);
+	void HandleMail_SMSVersion(u32 _uMail);
 	void HandleMail_NormalVersion(u32 _uMail);
 
 	void Update(int cycles);
@@ -195,6 +209,21 @@ private:
 		}
 	}
 
+	// SMS version
+	// - sync mails are sent every frame, not every 16 PBs
+	// (named SMS because it's used by Super Mario Sunshine
+	// and I couldn't find a better name)
+	bool IsSMSVersion() const
+	{
+		switch (m_CRC)
+		{
+			case 0x56d36052:
+				return true;
+			default:
+				return false;
+		}
+	}
+
 	u32 m_CRC;
 
 	// These are the only dynamically allocated things allowed in the ucode.