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debug.c
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/*
debug.c
This file supplies cingb with useful debug-information.
*/
#include <stdio.h>
#include "globals.h"
#include "debug.h"
#include "z80.h"
#include "gameboy.h"
const char GB_SREG[][5]={"B","C","D","E","H","L","(HL)","A"};
const char GB_DREG[][3]={"BC","DE","HL","SP"};
const char GB_DPP[][3]={"BC","DE","HL","AF"};
const char GB_FJR[][4]={"","NZ,","Z,","NC,","C,"};
const char GB_FRET[][4]={"NZ","Z","NC","C"};
const char GB_ALU[][4]={"ADD","ADC","SUB","SBC","AND","XOR","OR","CP"};
const char GB_CBOPC[][7]={"RLC","RRC","RL","RR",
"SLA","SRA","SWAP","SRL",
"BIT 0,","BIT 1,","BIT 2,","BIT 3,",
"BIT 4,","BIT 5,","BIT 6,","BIT 7,",
"RES 0,","RES 1,","RES 2,","RES 3,",
"RES 4,","RES 5,","RES 6,","RES 7,",
"SET 0,","SET 1,","SET 2,","SET 3,",
"SET 4,","SET 5,","SET 6,","SET 7,"};
const char debugger_help1[]="\
b <addr> - set a breakpoint, at address <addr>\n\
c - clear breakpoint\n\
d <addr> - dump memory, at address <addr>\n\
e <addr> - edit ONE byte at address <addr>, write\n\
value (you'll be asked)\n\
g [<addr>] - go to address <addr>, without <addr> the\n";
const char debugger_help2[]="\
program will continue from PC\n\
h - display this help\n\
o <count> - skip over commands,\n\
count (decimal number)\n\
q - quits the debugger and closes everything\n\
v <addr> - view a value (byte), at address <addr>\n\
# - graphical lcd-dump\
";
int FlagSet(int);
int FlagSet(flag)
int flag;
{
return (Z80_REG.B.F & flag) > 0 ? 1 : 0;
}
void DebugState(void)
{
fprintf(OUTSTREAM,
"AF:%04X BC:%04X DE:%04X HL:%04X SP:%04X Z:%i N:%i H:%i C:%i I:%i",
Z80_REG.W.AF,Z80_REG.W.BC,Z80_REG.W.DE,Z80_REG.W.HL,Z80_REG.W.SP,
FlagSet(FLAG_Z),FlagSet(FLAG_N),FlagSet(FLAG_H),FlagSet(FLAG_C),
Z80_IE);
fprintf(OUTSTREAM," ROM%03X RAM%02X\n",rombanknr,rambanknr);
fprintf(OUTSTREAM,"CLKS: %06X (%c) ",(unsigned int)Z80_CPUCLKS,
DBLSPEED ? 'D' : 'S');
fprintf(OUTSTREAM,"FF0F: %02X, FF40: %02X, FF41: %02X, ",
GetByteAt(0xff0f),
GetByteAt(0xff40),
GetByteAt(0xff41));
fprintf(OUTSTREAM,"FF44: %02X, FF45: %02X, FFFF: %02X\n",
GetByteAt(0xff44),
GetByteAt(0xff45),
GetByteAt(0xffff));
fprintf(OUTSTREAM,"%04X: %02X %02X %02X ",Z80_REG.W.PC,
GetByteAt(Z80_REG.W.PC),
GetByteAt(Z80_REG.W.PC+1),
GetByteAt(Z80_REG.W.PC+2)
);
switch (GetByteAt(Z80_REG.W.PC))
{
case 0x00:fprintf(OUTSTREAM,"NOP");
break;
case 0x01:
case 0x11:
case 0x21:
case 0x31:fprintf(OUTSTREAM,
"LD %s,%04X",GB_DREG[GetByteAt(Z80_REG.W.PC)
>> 4],GetWordAt(Z80_REG.W.PC+1));
break;
case 0x02:
case 0x12:fprintf(OUTSTREAM,"LD (%s),A",GB_DREG[GetByteAt(
Z80_REG.W.PC)>>4]);
break;
case 0x03:
case 0x13:
case 0x23:
case 0x33:fprintf(OUTSTREAM,
"INC %s",GB_DREG[GetByteAt(Z80_REG.W.PC)
>> 4]);
break;
case 0x04:
case 0x0C:
case 0x14:
case 0x1C:
case 0x24:
case 0x2C:
case 0x34:
case 0x3C:fprintf(OUTSTREAM,
"INC %s",GB_SREG[GetByteAt(Z80_REG.W.PC)
>> 3]);
break;
case 0x05:
case 0x0D:
case 0x15:
case 0x1D:
case 0x25:
case 0x2D:
case 0x35:
case 0x3D:fprintf(OUTSTREAM,
"DEC %s",GB_SREG[GetByteAt(Z80_REG.W.PC)
>> 3]);
break;
case 0x06:
case 0x0E:
case 0x16:
case 0x1E:
case 0x26:
case 0x2E:
case 0x36:
case 0x3E:fprintf(OUTSTREAM,
"LD %s,%02X",GB_SREG[GetByteAt(Z80_REG.W.PC)
>> 3],
GetByteAt(Z80_REG.W.PC+1));
break;
case 0x07:fprintf(OUTSTREAM,"RLCA");
break;
case 0x08:fprintf(OUTSTREAM,"LD (%04X),SP",
GetWordAt(Z80_REG.W.PC+1));
break;
case 0x09:
case 0x19:
case 0x29:
case 0x39:fprintf(OUTSTREAM,
"ADD HL,%s",GB_DREG[GetByteAt(Z80_REG.W.PC)
>>4]);
break;
case 0x0A:
case 0x1A:fprintf(OUTSTREAM,
"LD A,(%s)",GB_DREG[GetByteAt(Z80_REG.W.PC)
>>4]);
break;
case 0x0B:
case 0x1B:
case 0x2B:
case 0x3B:fprintf(OUTSTREAM,"DEC %s",
GB_DREG[GetByteAt(Z80_REG.W.PC)>>4]);
break;
case 0x0F:fprintf(OUTSTREAM,"RRCA");
break;
case 0x10:fprintf(OUTSTREAM,"STOP");
break;
case 0x17:fprintf(OUTSTREAM,"RLA");
break;
case 0x1F:fprintf(OUTSTREAM,"RRA");
break;
case 0x18:
case 0x20:
case 0x28:
case 0x30:
case 0x38:fprintf(OUTSTREAM,"JR %s%04X",
GB_FJR[(GetByteAt(Z80_REG.W.PC)
>>3)-3],Z80_REG.W.PC+
(signed char)(GetByteAt(Z80_REG.W.PC+1))+2);
break;
case 0x22:fprintf(OUTSTREAM,"LD (HLI),A");
break;
case 0x2A:fprintf(OUTSTREAM,"LD A,(HLI)");
break;
case 0x32:fprintf(OUTSTREAM,"LD (HLD),A");
break;
case 0x3A:fprintf(OUTSTREAM,"LD A,(HLD)");
break;
case 0x27:fprintf(OUTSTREAM,"DAA");
break;
case 0x2F:fprintf(OUTSTREAM,"CPL");
break;
case 0x37:fprintf(OUTSTREAM,"SCF");
break;
case 0x3F:fprintf(OUTSTREAM,"CCF");
break;
case 0x40:
case 0x41:
case 0x42:
case 0x43:
case 0x44:
case 0x45:
case 0x46:
case 0x47:
case 0x48:
case 0x49:
case 0x4A:
case 0x4B:
case 0x4C:
case 0x4D:
case 0x4E:
case 0x4F:
case 0x50:
case 0x51:
case 0x52:
case 0x53:
case 0x54:
case 0x55:
case 0x56:
case 0x57:
case 0x58:
case 0x59:
case 0x5A:
case 0x5B:
case 0x5C:
case 0x5D:
case 0x5E:
case 0x5F:
case 0x60:
case 0x61:
case 0x62:
case 0x63:
case 0x64:
case 0x65:
case 0x66:
case 0x67:
case 0x68:
case 0x69:
case 0x6A:
case 0x6B:
case 0x6C:
case 0x6D:
case 0x6E:
case 0x6F:
case 0x70:
case 0x71:
case 0x72:
case 0x73:
case 0x74:
case 0x75:
case 0x77:
case 0x78:
case 0x79:
case 0x7A:
case 0x7B:
case 0x7C:
case 0x7D:
case 0x7E:
case 0x7F:
fprintf(OUTSTREAM,"LD %s,%s",
GB_SREG[(GetByteAt(Z80_REG.W.PC) >> 3)-8],
GB_SREG[(GetByteAt(Z80_REG.W.PC) & 7)]);
break;
case 0x76:fprintf(OUTSTREAM,"HALT");
break;
case 0x80:
case 0x81:
case 0x82:
case 0x83:
case 0x84:
case 0x85:
case 0x86:
case 0x87:fprintf(OUTSTREAM,"ADD A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0x88:
case 0x89:
case 0x8A:
case 0x8B:
case 0x8C:
case 0x8D:
case 0x8E:
case 0x8F:fprintf(OUTSTREAM,"ADC A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0x90:
case 0x91:
case 0x92:
case 0x93:
case 0x94:
case 0x95:
case 0x96:
case 0x97:fprintf(OUTSTREAM,"SUB A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0x98:
case 0x99:
case 0x9A:
case 0x9B:
case 0x9C:
case 0x9D:
case 0x9E:
case 0x9F:fprintf(OUTSTREAM,"SBC A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0xA0:
case 0xA1:
case 0xA2:
case 0xA3:
case 0xA4:
case 0xA5:
case 0xA6:
case 0xA7:fprintf(OUTSTREAM,"AND A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0xA8:
case 0xA9:
case 0xAA:
case 0xAB:
case 0xAC:
case 0xAD:
case 0xAE:
case 0xAF:fprintf(OUTSTREAM,"XOR A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0xB0:
case 0xB1:
case 0xB2:
case 0xB3:
case 0xB4:
case 0xB5:
case 0xB6:
case 0xB7:fprintf(OUTSTREAM,"OR A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0xB8:
case 0xB9:
case 0xBA:
case 0xBB:
case 0xBC:
case 0xBD:
case 0xBE:
case 0xBF:fprintf(OUTSTREAM,"CP A,%s",
GB_SREG[GetByteAt(Z80_REG.W.PC)& 7]);
break;
case 0xC0:
case 0xC8:
case 0xD0:
case 0xD8:fprintf(OUTSTREAM,"RET %s",
GB_FRET[(GetByteAt(Z80_REG.W.PC)>>3)&3]);
break;
case 0xC1:
case 0xD1:
case 0xE1:
case 0xF1:fprintf(OUTSTREAM,"POP %s",
GB_DPP[(GetByteAt(Z80_REG.W.PC)>>4)-0x0C]);
break;
case 0xC2:
case 0xCA:
case 0xD2:
case 0xDA:fprintf(OUTSTREAM,"JP %s,%04X",
GB_FRET[(GetByteAt(Z80_REG.W.PC)
>>3)&3],GetWordAt(Z80_REG.W.PC+1));
break;
case 0xC3:fprintf(OUTSTREAM,"JP %04X",
GetWordAt(Z80_REG.W.PC+1));
break;
case 0xC4:
case 0xCC:
case 0xD4:
case 0xDC:fprintf(OUTSTREAM,"CALL %s,%04X",
GB_FRET[(GetByteAt(Z80_REG.W.PC)>>3)&3],
GetWordAt(Z80_REG.W.PC+1));
break;
case 0xC5:
case 0xD5:
case 0xE5:
case 0xF5:fprintf(OUTSTREAM,"PUSH %s",
GB_DPP[(GetByteAt(Z80_REG.W.PC)
>>4)-0x0C]);
break;
case 0xC6:
case 0xCE:
case 0xD6:
case 0xDE:
case 0xE6:
case 0xEE:
case 0xF6:
case 0xFE:fprintf(OUTSTREAM,"%s A,%02X",
GB_ALU[(GetByteAt(Z80_REG.W.PC)
>>3)&7],GetByteAt(Z80_REG.W.PC+1));
break;
case 0xC7:
case 0xCF:
case 0xD7:
case 0xDF:
case 0xE7:
case 0xEF:
case 0xF7:
case 0xFF:fprintf(OUTSTREAM,"RST %02X",
((GetByteAt(Z80_REG.W.PC)>>3)&7)<<3);
break;
case 0xC9:fprintf(OUTSTREAM,"RET");
break;
case 0xCB:fprintf(OUTSTREAM,"%s %s",
GB_CBOPC[GetByteAt(Z80_REG.W.PC+1)
>>3],GB_SREG[GetByteAt(Z80_REG.W.PC+1)&7]);
break;
case 0xCD:fprintf(OUTSTREAM,"CALL %04X",
GetWordAt(Z80_REG.W.PC+1));
break;
case 0xD9:fprintf(OUTSTREAM,"RETI");
break;
case 0xE0:fprintf(OUTSTREAM,"LDH (%02X),A",
GetByteAt(Z80_REG.W.PC+1));
break;
case 0xE2:fprintf(OUTSTREAM,"LDH (C),A");
break;
case 0xE8:fprintf(OUTSTREAM,"ADD SP,%02X",
GetByteAt(Z80_REG.W.PC+1));
break;
case 0xE9:fprintf(OUTSTREAM,"JP (HL)");
break;
case 0xEA:fprintf(OUTSTREAM,"LD (%04X),A",
GetWordAt(Z80_REG.W.PC+1));
break;
case 0xF0:fprintf(OUTSTREAM,"LDH A,(%02X)",
GetByteAt(Z80_REG.W.PC+1));
break;
case 0xF2:fprintf(OUTSTREAM,"LDH A,(C)");
break;
case 0xF3:fprintf(OUTSTREAM,"DI");
break;
case 0xFB:fprintf(OUTSTREAM,"EI");
break;
case 0xF8:fprintf(OUTSTREAM,"LD HL,SP+%02X",
GetByteAt(Z80_REG.W.PC+1));
break;
case 0xF9:fprintf(OUTSTREAM,"LD SP,HL");
break;
case 0xFA:fprintf(OUTSTREAM,"LD A,(%04X)",
GetWordAt(Z80_REG.W.PC+1));
break;
default:fprintf(OUTSTREAM,"*** illegal opcode: 0x%02X ***",
GetByteAt(Z80_REG.W.PC));
break;
}
}