| 1 |
/** M6502: portable 6502 emulator ****************************/ |
| 2 |
/** **/ |
| 3 |
/** ConDebug.c **/ |
| 4 |
/** **/ |
| 5 |
/** This file contains a console version of the built-in **/ |
| 6 |
/** debugger, using EMULib's Console.c. When -DCONDEBUG is **/ |
| 7 |
/** ommitted, ConDebug.c just includes the default command **/ |
| 8 |
/** line based debugger (Debug.c). **/ |
| 9 |
/** **/ |
| 10 |
/** Copyright (C) Marat Fayzullin 2005-2007 **/ |
| 11 |
/** You are not allowed to distribute this software **/ |
| 12 |
/** commercially. Please, notify me, if you make any **/ |
| 13 |
/** changes to this file. **/ |
| 14 |
/*************************************************************/ |
| 15 |
#ifdef DEBUG |
| 16 |
|
| 17 |
#ifndef CONDEBUG |
| 18 |
/** Normal Debug6502() ***************************************/ |
| 19 |
/** When CONDEBUG #undefined, we use plain command line. **/ |
| 20 |
/*************************************************************/ |
| 21 |
#include "Debug.c" |
| 22 |
|
| 23 |
#else |
| 24 |
/** Console Debug6502() **************************************/ |
| 25 |
/** When CONDEBUG #defined, we use EMULib console. **/ |
| 26 |
/*************************************************************/ |
| 27 |
|
| 28 |
#include "M6502.h" |
| 29 |
#include "Console.h" |
| 30 |
#include <stdlib.h> |
| 31 |
|
| 32 |
#define Debug6502 OriginalDebug6502 |
| 33 |
#include "Debug.c" |
| 34 |
#undef Debug6502 |
| 35 |
|
| 36 |
#define CLR_BACK PIXEL(255,255,255) |
| 37 |
#define CLR_TEXT PIXEL(0,0,0) |
| 38 |
#define CLR_DIALOG PIXEL(0,100,0) |
| 39 |
#define CLR_PC PIXEL(255,0,0) |
| 40 |
#define CLR_SP PIXEL(0,0,100) |
| 41 |
|
| 42 |
static byte ChrDump(byte C) |
| 43 |
{ |
| 44 |
return((C>=32)&&(C<128)? C:'.'); |
| 45 |
} |
| 46 |
|
| 47 |
/** Debug6502() **********************************************/ |
| 48 |
/** This function should exist if DEBUG is #defined. When **/ |
| 49 |
/** Trace!=0, it is called after each command executed by **/ |
| 50 |
/** the CPU, and given the 6502 registers. **/ |
| 51 |
/*************************************************************/ |
| 52 |
byte Debug6502(M6502 *R) |
| 53 |
{ |
| 54 |
char S[1024]; |
| 55 |
word A,Addr,ABuf[20]; |
| 56 |
int J,I,K,X,Y,MemoryDump,DrawWindow,ExitNow; |
| 57 |
|
| 58 |
/* If we don't have enough screen estate... */ |
| 59 |
if((VideoW<32*8)||(VideoH<23*8)) |
| 60 |
{ |
| 61 |
/* Show warning message */ |
| 62 |
CONMsg( |
| 63 |
-1,-1,-1,-1,PIXEL(255,255,255),PIXEL(255,0,0), |
| 64 |
"Error","Screen is\0too small!\0\0" |
| 65 |
); |
| 66 |
/* Continue emulation */ |
| 67 |
return(1); |
| 68 |
} |
| 69 |
|
| 70 |
X = ((VideoW>>3)-30)>>1; |
| 71 |
Y = ((VideoH>>3)-25)>>1; |
| 72 |
Addr = R->PC.W; |
| 73 |
A = ~Addr; |
| 74 |
K = 0; |
| 75 |
|
| 76 |
for(DrawWindow=1,MemoryDump=ExitNow=0;!ExitNow&&VideoImg;) |
| 77 |
{ |
| 78 |
if(DrawWindow) |
| 79 |
{ |
| 80 |
CONWindow(X,Y,30,25,CLR_TEXT,CLR_BACK,"6502 Debugger"); |
| 81 |
|
| 82 |
sprintf(S,"PC:%04X",R->PC.W); |
| 83 |
CONSetColor(CLR_BACK,CLR_PC); |
| 84 |
CONPrint(X+1,Y+2,S); |
| 85 |
sprintf(S,"SP:%04X",R->S+0x100); |
| 86 |
CONSetColor(CLR_BACK,CLR_SP); |
| 87 |
CONPrint(X+9,Y+2,S); |
| 88 |
CONPrint(X+25,Y+8,"STCK"); |
| 89 |
|
| 90 |
sprintf(S,"P:[%c%c%c%c%c%c%c%c]", |
| 91 |
R->P&0x80? 'N':'.', |
| 92 |
R->P&0x40? 'V':'.', |
| 93 |
R->P&0x20? 'R':'.', |
| 94 |
R->P&0x10? 'B':'.', |
| 95 |
R->P&0x08? 'D':'.', |
| 96 |
R->P&0x04? 'I':'.', |
| 97 |
R->P&0x02? 'Z':'.', |
| 98 |
R->P&0x01? 'C':'.' |
| 99 |
); |
| 100 |
CONSetColor(CLR_BACK,CLR_DIALOG); |
| 101 |
CONPrint(X+17,Y+2,S); |
| 102 |
|
| 103 |
sprintf(S,"A:%02X\nX:%02X\nY:%02X",R->A,R->X,R->Y); |
| 104 |
CONSetColor(CLR_TEXT,CLR_BACK); |
| 105 |
CONPrint(X+25,Y+4,S); |
| 106 |
|
| 107 |
for(J=0;J<15;++J) |
| 108 |
{ |
| 109 |
sprintf(S,"%02X",Rd6502(0x0100+(byte)(R->S+J+1))); |
| 110 |
CONPrint(X+26,Y+J+9,S); |
| 111 |
} |
| 112 |
|
| 113 |
DrawWindow=0; |
| 114 |
A=~Addr; |
| 115 |
} |
| 116 |
|
| 117 |
/* If top address has changed... */ |
| 118 |
if(A!=Addr) |
| 119 |
{ |
| 120 |
/* Clear display */ |
| 121 |
CONBox((X+1)<<3,(Y+4)<<3,23*8,20*8,CLR_BACK); |
| 122 |
|
| 123 |
if(MemoryDump) |
| 124 |
{ |
| 125 |
/* Draw memory dump */ |
| 126 |
for(J=0,A=Addr;J<20;J++,A+=4) |
| 127 |
{ |
| 128 |
if(A==R->PC.W) CONSetColor(CLR_BACK,CLR_PC); |
| 129 |
else if(A==R->S+0x100) CONSetColor(CLR_BACK,CLR_SP); |
| 130 |
else CONSetColor(CLR_TEXT,CLR_BACK); |
| 131 |
sprintf(S,"%04X%c",A,A==R->PC.W? CON_MORE:A==R->S+0x100? CON_LESS:':'); |
| 132 |
CONPrint(X+1,Y+J+4,S); |
| 133 |
|
| 134 |
CONSetColor(CLR_TEXT,CLR_BACK); |
| 135 |
sprintf(S, |
| 136 |
"%02X %02X %02X %02X %c%c%c%c", |
| 137 |
Rd6502(A),Rd6502(A+1),Rd6502(A+2),Rd6502(A+3), |
| 138 |
ChrDump(Rd6502(A)),ChrDump(Rd6502(A+1)), |
| 139 |
ChrDump(Rd6502(A+2)),ChrDump(Rd6502(A+3)) |
| 140 |
); |
| 141 |
CONPrint(X+7,Y+J+4,S); |
| 142 |
} |
| 143 |
} |
| 144 |
else |
| 145 |
{ |
| 146 |
/* Draw listing */ |
| 147 |
for(J=0,A=Addr;J<20;J++) |
| 148 |
{ |
| 149 |
if(A==R->PC.W) CONSetColor(CLR_BACK,CLR_PC); |
| 150 |
else if(A==R->S+0x100) CONSetColor(CLR_BACK,CLR_SP); |
| 151 |
else CONSetColor(CLR_TEXT,CLR_BACK); |
| 152 |
sprintf(S,"%04X%c",A,A==R->PC.W? CON_MORE:A==R->S+0x100? CON_LESS:':'); |
| 153 |
CONPrint(X+1,Y+J+4,S); |
| 154 |
|
| 155 |
ABuf[J]=A; |
| 156 |
A+=DAsm(S,A); |
| 157 |
|
| 158 |
CONSetColor(CLR_TEXT,CLR_BACK); |
| 159 |
CONPrintN(X+7,Y+J+4,S,17); |
| 160 |
} |
| 161 |
} |
| 162 |
|
| 163 |
/* Display redrawn */ |
| 164 |
A=Addr; |
| 165 |
} |
| 166 |
|
| 167 |
/* Draw pointer */ |
| 168 |
CONChar(X+6,Y+K+4,CON_ARROW); |
| 169 |
|
| 170 |
/* Show screen buffer */ |
| 171 |
ShowVideo(); |
| 172 |
|
| 173 |
/* Get key code */ |
| 174 |
I=WaitKey(); |
| 175 |
|
| 176 |
/* Clear pointer */ |
| 177 |
CONChar(X+6,Y+K+4,' '); |
| 178 |
|
| 179 |
/* Get and process key code */ |
| 180 |
switch(I) |
| 181 |
{ |
| 182 |
case 'H': |
| 183 |
CONMsg( |
| 184 |
-1,-1,-1,-1, |
| 185 |
CLR_BACK,CLR_DIALOG, |
| 186 |
"Debugger Help", |
| 187 |
"ENTER - Execute next opcode\0" |
| 188 |
" UP - Previous opcode\0" |
| 189 |
" DOWN - Next opcode\0" |
| 190 |
" LEFT - Page up\0" |
| 191 |
"RIGHT - Page down\0" |
| 192 |
" H - This help page\0" |
| 193 |
" G - Go to address\0" |
| 194 |
" D - Disassembler view\0" |
| 195 |
" M - Memory dump view\0" |
| 196 |
" S - Show stack\0" |
| 197 |
" J - Jump to cursor\0" |
| 198 |
" R - Run to cursor\0" |
| 199 |
" C - Continue execution\0" |
| 200 |
" Q - Quit emulator\0" |
| 201 |
); |
| 202 |
DrawWindow=1; |
| 203 |
break; |
| 204 |
case CON_UP: |
| 205 |
if(K) --K; |
| 206 |
else |
| 207 |
if(MemoryDump) Addr-=4; |
| 208 |
else for(--Addr;Addr+DAsm(S,Addr)>A;--Addr); |
| 209 |
break; |
| 210 |
case CON_DOWN: |
| 211 |
if(K<19) ++K; |
| 212 |
else |
| 213 |
if(MemoryDump) Addr+=4; |
| 214 |
else Addr+=DAsm(S,Addr); |
| 215 |
break; |
| 216 |
case CON_LEFT: |
| 217 |
if(MemoryDump) |
| 218 |
Addr-=4*20; |
| 219 |
else |
| 220 |
{ |
| 221 |
for(I=20,Addr=~A;(Addr>A)||((A^Addr)&~Addr&0x8000);++I) |
| 222 |
for(J=0,Addr=A-I;J<20;++J) Addr+=DAsm(S,Addr); |
| 223 |
Addr=A-I+1; |
| 224 |
} |
| 225 |
break; |
| 226 |
case CON_RIGHT: |
| 227 |
if(MemoryDump) |
| 228 |
Addr+=4*20; |
| 229 |
else |
| 230 |
for(J=0;J<20;++J) Addr+=DAsm(S,Addr); |
| 231 |
break; |
| 232 |
case CON_OK: |
| 233 |
ExitNow=1; |
| 234 |
break; |
| 235 |
case 'Q': |
| 236 |
return(0); |
| 237 |
case CON_EXIT: |
| 238 |
case 'C': |
| 239 |
R->Trap=0xFFFF; |
| 240 |
R->Trace=0; |
| 241 |
ExitNow=1; |
| 242 |
break; |
| 243 |
case 'R': |
| 244 |
R->Trap=ABuf[K]; |
| 245 |
R->Trace=0; |
| 246 |
ExitNow=1; |
| 247 |
break; |
| 248 |
case 'M': |
| 249 |
MemoryDump=1; |
| 250 |
A=~Addr; |
| 251 |
break; |
| 252 |
case 'S': |
| 253 |
MemoryDump=1; |
| 254 |
Addr=R->S+0x100; |
| 255 |
K=0; |
| 256 |
A=~Addr; |
| 257 |
break; |
| 258 |
case 'D': |
| 259 |
MemoryDump=0; |
| 260 |
A=~Addr; |
| 261 |
break; |
| 262 |
case 'G': |
| 263 |
if(CONInput(-1,-1,CLR_BACK,CLR_DIALOG,"Go to Address:",S,5|CON_HEX)) |
| 264 |
{ Addr=strtol(S,0,16);K=0; } |
| 265 |
DrawWindow=1; |
| 266 |
break; |
| 267 |
case 'J': |
| 268 |
R->PC.W=ABuf[K]; |
| 269 |
A=~Addr; |
| 270 |
break; |
| 271 |
} |
| 272 |
} |
| 273 |
|
| 274 |
/* Continue emulation */ |
| 275 |
return(1); |
| 276 |
} |
| 277 |
|
| 278 |
#endif /* CONDEBUG */ |
| 279 |
#endif /* DEBUG */ |
Parent Directory
| 
Revision Log