From 2edab83ff318aa6fdc6727561898390ac5dc6e5c Mon Sep 17 00:00:00 2001
From: Ian Brown <bigianb@gmail.com>
Date: Tue, 19 Dec 2023 19:37:44 +0000
Subject: [PATCH] Dead or Alive 2 fix

---
 Source/iop/IopBios.h       |  1 +
 Source/iop/Iop_Intrman.cpp | 25 ++++++++++++++++++++-----
 patches.xml                |  6 ++++++
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/Source/iop/IopBios.h b/Source/iop/IopBios.h
index ae0fc84e4d..a343091535 100644
--- a/Source/iop/IopBios.h
+++ b/Source/iop/IopBios.h
@@ -39,6 +39,7 @@ class CIopBios : public Iop::CBiosBase
 		KERNEL_RESULT_ERROR_ILLEGAL_CONTEXT = -100,
 		KERNEL_RESULT_ERROR_ILLEGAL_INTRCODE = -101,
 		KERNEL_RESULT_ERROR_CPUDI = -102,
+        	KERNEL_RESULT_ERROR_INTRDISABLE = -103,
 		KERNEL_RESULT_ERROR_FOUND_HANDLER = -104,
 		KERNEL_RESULT_ERROR_NOTFOUND_HANDLER = -105,
 		KERNEL_RESULT_ERROR_NO_TIMER = -150,
diff --git a/Source/iop/Iop_Intrman.cpp b/Source/iop/Iop_Intrman.cpp
index 6f3b0f0aaa..eb5afc1011 100644
--- a/Source/iop/Iop_Intrman.cpp
+++ b/Source/iop/Iop_Intrman.cpp
@@ -159,13 +159,28 @@ uint32 CIntrman::DisableIntrLine(CMIPS& context, uint32 line, uint32 res)
 	CLog::GetInstance().Print(LOGNAME, FUNCTION_DISABLEINTRLINE "(line = %d, res = %08X);\r\n",
 	                          line, res);
 #endif
+	uint32 ret = CIopBios::KERNEL_RESULT_OK;
+	uint32 stat = line;
 	UNION64_32 mask(
 	    context.m_pMemoryMap->GetWord(CIntc::MASK0),
 	    context.m_pMemoryMap->GetWord(CIntc::MASK1));
-	mask.f &= ~(1LL << line);
-	context.m_pMemoryMap->SetWord(CIntc::MASK0, mask.h0);
-	context.m_pMemoryMap->SetWord(CIntc::MASK1, mask.h1);
-	return 0;
+	if(mask.f & (1LL << line))
+	{
+		mask.f &= ~(1LL << line);
+		context.m_pMemoryMap->SetWord(CIntc::MASK0, mask.h0);
+		context.m_pMemoryMap->SetWord(CIntc::MASK1, mask.h1);
+	}
+	else
+	{
+		ret = CIopBios::KERNEL_RESULT_ERROR_INTRDISABLE;
+		stat = CIopBios::KERNEL_RESULT_ERROR_INTRDISABLE;
+	}
+	if(res != 0)
+	{
+		uint32* state = reinterpret_cast<uint32*>(m_ram + res);
+		(*state) = stat;
+	}
+	return ret;
 }
 
 uint32 CIntrman::EnableInterrupts(CMIPS& context)
@@ -210,7 +225,7 @@ uint32 CIntrman::SuspendInterrupts(CMIPS& context, uint32 statePtr)
 uint32 CIntrman::ResumeInterrupts(CMIPS& context, uint32 state)
 {
 #ifdef _DEBUG
-	CLog::GetInstance().Print(LOGNAME, FUNCTION_RESUMEINTERRUPTS "();\r\n");
+	CLog::GetInstance().Print(LOGNAME, FUNCTION_RESUMEINTERRUPTS "(0x%x);\r\n", state);
 #endif
 	uint32& statusRegister = context.m_State.nCOP0[CCOP_SCU::STATUS];
 	if(state)
diff --git a/patches.xml b/patches.xml
index 09313c9284..9a54f7401c 100644
--- a/patches.xml
+++ b/patches.xml
@@ -5,4 +5,10 @@
 	<Executable Name="SLPM_551.91;1" Title="L2 - Love x Loop">
 		<Patch Address="0x001B4828" Value="0x10000008" Description="Avoid bug in code that fiddles with SP and causes the stack to be clobbered by SifCallRpc. Requires proper data cache handling to avoid issue." />
 	</Executable>
+	<Executable Name="SCES_500.03;1" Title="Dead or Alive 2" Region="EU">
+		<Patch Address="0x002b4c44" Value="0x24060000" Description="Make the file reading RPC call synchronous. Requires proper data cache handling to avoid issue." />
+	</Executable>
+	<Executable Name="SLPS_250.02;1" Title="Dead or Alive 2">
+		<Patch Address="0x00290408" Value="0x24060000" Description="Make the file reading RPC call synchronous. Requires proper data cache handling to avoid issue." />
+	</Executable>
 </Patches>