Draw the float register values and the paired singles in the error handler

The error handler will now have 3 pages, with the float register values being drawn on page 2, and the paired singles being drawn on page 3. The main reason that they are on separate pages is because the game consistantly crashes when both the float register values and the paired singles are drawn at the same time, and the cause is still unknown.

Also changed the following:
1. The OSError variable holding the string for the type of OSError that occured is now stored in the ErrorHandlerStrings struct.

2. In the drawString auto function, the returned string from OSGetFontTexture is now used, the value returned is the pointer to the next character in the string. Therefore, the i variable in that function was removed.

Author: Zephiles

ttyd-tools/rel/include/assembly.h

@@ -41,7 +41,8 @@ int32_t forceNPCItemDrop(void *ptr);
 void *fallThroughMostObjects(void *ptr);
 
 // draw.cpp
-bool disableDPadOptionsDisplay(uint16_t unkVar);;
+bool disableDPadOptionsDisplay(uint16_t unkVar);
+bool StartErrorHandlerCheckPairedSinglesEnabled();
 void StartErrorHandlerInterrupts();
 
 }

ttyd-tools/rel/include/global.h

@@ -799,8 +799,11 @@ struct MenuPrevMenuAndOption
 struct ErrorHandlerStrings
 {
 	#define MAX_LEVELS 32
+	const char *OSError;
 	char ContextAddress[32];
 	char GeneralRegisterValues[32][11];
+	char FloatRegisterValues[32][19];
+	char PairedSinglesValues[32][19];
 	char AdditionalRegisterValues[6][11];
 	char AddressList[MAX_LEVELS * 3][11];
 	char InstructionAndAddress[128];

ttyd-tools/rel/source/assembly/ErrorHandlerCheckPairedSingledEnabled.s

@@ -0,0 +1,6 @@
+.global StartErrorHandlerCheckPairedSinglesEnabled
+
+StartErrorHandlerCheckPairedSinglesEnabled:
+mfspr %r3,920 # 920 = HID2
+rlwinm %r3,%r3,3,31,31
+blr