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/** Z80: portable Z80 emulator *******************************/ |
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/** **/ |
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/** ConDebug.c **/ |
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/** **/ |
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/** This file contains a console version of the built-in **/ |
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/** debugger, using EMULib's Console.c. When -DCONDEBUG is **/ |
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/** ommitted, ConDebug.c just includes the default command **/ |
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/** line based debugger (Debug.c). **/ |
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/** **/ |
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/** Copyright (C) Marat Fayzullin 2005-2007 **/ |
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/** You are not allowed to distribute this software **/ |
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/** commercially. Please, notify me, if you make any **/ |
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/** changes to this file. **/ |
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/*************************************************************/ |
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#ifdef DEBUG |
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|
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#ifndef CONDEBUG |
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/** Normal DebugZ80() ****************************************/ |
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/** When CONDEBUG #undefined, we use plain command line. **/ |
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/*************************************************************/ |
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#include "Debug.c" |
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|
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#else |
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/** Console DebugZ80() ***************************************/ |
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/** When CONDEBUG #defined, we use EMULib console. **/ |
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/*************************************************************/ |
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|
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#include "Z80.h" |
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#include "Console.h" |
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#include <stdlib.h> |
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|
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#define DebugZ80 OriginalDebugZ80 |
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#include "Debug.c" |
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#undef DebugZ80 |
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|
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#define CLR_BACK PIXEL(255,255,255) |
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#define CLR_TEXT PIXEL(0,0,0) |
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#define CLR_DIALOG PIXEL(0,100,0) |
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#define CLR_PC PIXEL(255,0,0) |
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#define CLR_SP PIXEL(0,0,100) |
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|
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static byte ChrDump(byte C) |
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{ |
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return((C>=32)&&(C<128)? C:'.'); |
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} |
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|
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/** DebugZ80() ***********************************************/ |
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/** This function should exist if DEBUG is #defined. When **/ |
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/** Trace!=0, it is called after each command executed by **/ |
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/** the CPU, and given the Z80 registers. **/ |
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/*************************************************************/ |
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byte DebugZ80(Z80 *R) |
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{ |
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char S[1024]; |
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word A,Addr,ABuf[20]; |
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int J,I,K,X,Y,MemoryDump,DrawWindow,ExitNow; |
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|
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/* If we don't have enough screen estate... */ |
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if((VideoW<32*8)||(VideoH<23*8)) |
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{ |
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/* Show warning message */ |
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CONMsg( |
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-1,-1,-1,-1,PIXEL(255,255,255),PIXEL(255,0,0), |
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"Error","Screen is\0too small!\0\0" |
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); |
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/* Continue emulation */ |
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return(1); |
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} |
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|
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X = ((VideoW>>3)-32)>>1; |
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Y = ((VideoH>>3)-23)>>1; |
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Addr = R->PC.W; |
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A = ~Addr; |
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K = 0; |
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|
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for(DrawWindow=1,MemoryDump=ExitNow=0;!ExitNow&&VideoImg;) |
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{ |
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if(DrawWindow) |
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{ |
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CONWindow(X,Y,32,23,CLR_TEXT,CLR_BACK,"Z80 Debugger"); |
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|
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sprintf(S,"PC %04X",R->PC.W); |
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CONSetColor(CLR_BACK,CLR_PC); |
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CONPrint(X+24,Y+13,S); |
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sprintf(S,"SP %04X",R->SP.W); |
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CONSetColor(CLR_BACK,CLR_SP); |
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CONPrint(X+24,Y+14,S); |
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|
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CONSetColor(CLR_TEXT,CLR_BACK); |
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sprintf(S, |
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" %c%c%c%c%c%c\n\n" |
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"AF %04X\nBC %04X\nDE %04X\nHL %04X\nIX %04X\nIY %04X\n\n" |
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"IR %02X%02X", |
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R->AF.B.l&0x80? 'S':'.',R->AF.B.l&0x40? 'Z':'.',R->AF.B.l&0x10? 'H':'.', |
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R->AF.B.l&0x04? 'P':'.',R->AF.B.l&0x02? 'N':'.',R->AF.B.l&0x01? 'C':'.', |
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R->AF.W,R->BC.W,R->DE.W,R->HL.W,R->IX.W,R->IY.W,R->I,R->R |
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); |
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CONPrint(X+24,Y+2,S); |
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sprintf(S, |
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"%s %s", |
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R->IFF&0x04? "IM2":R->IFF&0x02? "IM1":"IM0", |
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R->IFF&0x01? "EI":"DI" |
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); |
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CONPrint(X+25,Y+21,S); |
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DrawWindow=0; |
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A=~Addr; |
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} |
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|
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/* If top address has changed... */ |
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if(A!=Addr) |
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{ |
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/* Clear display */ |
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CONBox((X+1)<<3,(Y+2)<<3,23*8,20*8,CLR_BACK); |
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|
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if(MemoryDump) |
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{ |
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/* Draw memory dump */ |
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for(J=0,A=Addr;J<20;J++,A+=4) |
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{ |
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if(A==R->PC.W) CONSetColor(CLR_BACK,CLR_PC); |
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else if(A==R->SP.W) CONSetColor(CLR_BACK,CLR_SP); |
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else CONSetColor(CLR_TEXT,CLR_BACK); |
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sprintf(S,"%04X%c",A,A==R->PC.W? CON_MORE:A==R->SP.W? CON_LESS:':'); |
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CONPrint(X+1,Y+J+2,S); |
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|
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CONSetColor(CLR_TEXT,CLR_BACK); |
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sprintf(S, |
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"%02X %02X %02X %02X %c%c%c%c", |
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RdZ80(A),RdZ80(A+1),RdZ80(A+2),RdZ80(A+3), |
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ChrDump(RdZ80(A)),ChrDump(RdZ80(A+1)), |
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ChrDump(RdZ80(A+2)),ChrDump(RdZ80(A+3)) |
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); |
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CONPrint(X+7,Y+J+2,S); |
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} |
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} |
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else |
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{ |
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/* Draw listing */ |
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for(J=0,A=Addr;J<20;J++) |
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{ |
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if(A==R->PC.W) CONSetColor(CLR_BACK,CLR_PC); |
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else if(A==R->SP.W) CONSetColor(CLR_BACK,CLR_SP); |
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else CONSetColor(CLR_TEXT,CLR_BACK); |
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sprintf(S,"%04X%c",A,A==R->PC.W? CON_MORE:A==R->SP.W? CON_LESS:':'); |
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CONPrint(X+1,Y+J+2,S); |
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|
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ABuf[J]=A; |
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A+=DAsm(S,A); |
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|
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CONSetColor(CLR_TEXT,CLR_BACK); |
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CONPrintN(X+7,Y+J+2,S,23); |
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} |
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} |
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|
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/* Display redrawn */ |
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A=Addr; |
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} |
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|
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/* Draw pointer */ |
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CONChar(X+6,Y+K+2,CON_ARROW); |
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|
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/* Show screen buffer */ |
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ShowVideo(); |
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|
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/* Get key code */ |
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I=WaitKey(); |
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|
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/* Clear pointer */ |
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CONChar(X+6,Y+K+2,' '); |
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|
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/* Get and process key code */ |
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switch(I) |
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{ |
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case 'H': |
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CONMsg( |
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-1,-1,-1,-1, |
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CLR_BACK,CLR_DIALOG, |
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"Debugger Help", |
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"ENTER - Execute next opcode\0" |
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" UP - Previous opcode\0" |
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" DOWN - Next opcode\0" |
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" LEFT - Page up\0" |
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"RIGHT - Page down\0" |
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" H - This help page\0" |
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" G - Go to address\0" |
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" D - Disassembler view\0" |
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" M - Memory dump view\0" |
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" S - Show stack\0" |
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" J - Jump to cursor\0" |
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" R - Run to cursor\0" |
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" C - Continue execution\0" |
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" Q - Quit emulator\0" |
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); |
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DrawWindow=1; |
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break; |
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case CON_UP: |
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if(K) --K; |
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else |
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if(MemoryDump) Addr-=4; |
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else for(--Addr;Addr+DAsm(S,Addr)>A;--Addr); |
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break; |
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case CON_DOWN: |
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if(K<19) ++K; |
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else |
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if(MemoryDump) Addr+=4; |
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else Addr+=DAsm(S,Addr); |
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break; |
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case CON_LEFT: |
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if(MemoryDump) |
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Addr-=4*20; |
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else |
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{ |
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for(I=20,Addr=~A;(Addr>A)||((A^Addr)&~Addr&0x8000);++I) |
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for(J=0,Addr=A-I;J<20;++J) Addr+=DAsm(S,Addr); |
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Addr=A-I+1; |
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} |
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break; |
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case CON_RIGHT: |
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if(MemoryDump) |
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Addr+=4*20; |
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else |
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for(J=0;J<20;++J) Addr+=DAsm(S,Addr); |
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break; |
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case CON_OK: |
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ExitNow=1; |
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break; |
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case 'Q': |
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return(0); |
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case CON_EXIT: |
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case 'C': |
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R->Trap=0xFFFF; |
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R->Trace=0; |
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ExitNow=1; |
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break; |
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case 'R': |
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R->Trap=ABuf[K]; |
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R->Trace=0; |
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ExitNow=1; |
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break; |
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case 'M': |
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MemoryDump=1; |
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A=~Addr; |
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break; |
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case 'S': |
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MemoryDump=1; |
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Addr=R->SP.W; |
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K=0; |
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A=~Addr; |
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break; |
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case 'D': |
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MemoryDump=0; |
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A=~Addr; |
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break; |
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case 'G': |
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if(CONInput(-1,-1,CLR_BACK,CLR_DIALOG,"Go to Address:",S,5|CON_HEX)) |
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{ Addr=strtol(S,0,16);K=0; } |
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DrawWindow=1; |
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break; |
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case 'J': |
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R->PC.W=ABuf[K]; |
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A=~Addr; |
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break; |
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} |
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} |
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|
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/* Continue emulation */ |
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return(1); |
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} |
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|
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#endif /* CONDEBUG */ |
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#endif /* DEBUG */ |
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