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view src/gba/agbprint.cpp @ 308:de172acc5a03

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moved the memory manipulation functions out of world.practice and into a separate location, gb.mem-utils, to avoid cyclic load dependency. will adjust the dependent files shortly.
author Dylan Holmes <ocsenave@gmail.com>
date Sat, 31 Mar 2012 04:25:49 -0500
parents f9f4f1b99eed
children
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     1 #include <cstdio>



     2 #include <cstring>



     3 



     4 #include "GBAGlobals.h"



     5 



     6 extern void (*dbgOutput)(char *, u32);



     7 extern int systemVerbose;



     8 



     9 static bool agbPrintEnabled = false;



    10 static bool agbPrintProtect = false;



    11 



    12 bool agbPrintWrite(u32 address, u16 value)



    13 {



    14 	if (agbPrintEnabled)



    15 	{



    16 		if (address == 0x9fe2ffe) // protect



    17 		{



    18 			agbPrintProtect = (value != 0);



    19 			debuggerWriteHalfWord(address, value);



    20 			return true;



    21 		}



    22 		else



    23 		{



    24 			if (agbPrintProtect &&



    25 			    ((address >= 0x9fe20f8 && address <= 0x9fe20ff) // control structure



    26 			     || (address >= 0x8fd0000 && address <= 0x8fdffff)



    27 			     || (address >= 0x9fd0000 && address <= 0x9fdffff)))



    28 			{



    29 				debuggerWriteHalfWord(address, value);



    30 				return true;



    31 			}



    32 		}



    33 	}



    34 	return false;



    35 }



    36 



    37 void agbPrintReset()



    38 {



    39 	agbPrintProtect = false;



    40 }



    41 



    42 void agbPrintEnable(bool enable)



    43 {



    44 	agbPrintEnabled = enable;



    45 }



    46 



    47 bool agbPrintIsEnabled()



    48 {



    49 	return agbPrintEnabled;



    50 }



    51 



    52 void agbPrintFlush()



    53 {



    54 	u16 get = debuggerReadHalfWord(0x9fe20fc);



    55 	u16 put = debuggerReadHalfWord(0x9fe20fe);



    56 



    57 	u32 address = (debuggerReadHalfWord(0x9fe20fa) << 16);



    58 	if (address != 0xfd0000 && address != 0x1fd0000)



    59 	{



    60 		dbgOutput("Did you forget to call AGBPrintInit?\n", 0);



    61 		// get rid of the text otherwise we will continue to be called



    62 		debuggerWriteHalfWord(0x9fe20fc, put);



    63 		return;



    64 	}



    65 



    66 	u8 *data = &rom[address];



    67 



    68 	while (get != put)



    69 	{



    70 		char c = data[get++];



    71 		char s[2];



    72 		s[0] = c;



    73 		s[1] = 0;



    74 



    75 		if (systemVerbose & VERBOSE_AGBPRINT)



    76 			dbgOutput(s, 0);



    77 		if (c == '\n')



    78 			break;



    79 	}



    80 	debuggerWriteHalfWord(0x9fe20fc, get);



    81 }



    82