From 9c4f83771af2cd31f155ba7e16caae7e5054ab4f Mon Sep 17 00:00:00 2001
From: "SND\\shalma_cp" <SND\shalma_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97>
Date: Wed, 10 Nov 2010 17:46:54 +0000
Subject: Pitfall 3D - Beyond the Jungle - ir3000a.c - clear dynarec slot using
 old data - fixes stage loading crash

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@59398 e17a0e51-4ae3-4d35-97c3-1a29b211df97
---
 libpcsxcore/ix86/iR3000A.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'libpcsxcore')

diff --git a/libpcsxcore/ix86/iR3000A.c b/libpcsxcore/ix86/iR3000A.c
index 47915d98..99e9f3e4 100644
--- a/libpcsxcore/ix86/iR3000A.c
+++ b/libpcsxcore/ix86/iR3000A.c
@@ -451,6 +451,24 @@ static void recExecuteBlock() {
 }
 
 static void recClear(u32 Addr, u32 Size) {
+	u32 bank,offset;
+
+	bank = Addr >> 24;
+	offset = Addr & 0xffffff;
+
+
+	// Pitfall 3D - clear dynarec slots that contain 'stale' ram data
+	// - fixes stage 1 loading crash
+	if( bank == 0x80 || bank == 0xa0 || bank == 0x00 ) {
+		offset &= 0x1fffff;
+
+		if( offset >= 500 * 4 )
+			memset((void*)PC_REC(Addr - 500 * 4), 0, 500 * 4);
+		else
+			memset((void*)PC_REC(Addr - offset), 0, offset);
+	}
+	
+	
 	memset((void*)PC_REC(Addr), 0, Size * 4);
 }
 
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