/***************************************************************************** * * lr35902d.c * Portable Sharp LR35902 disassembler * * Copyright The MESS Team. * * - This source code is released as freeware for non-commercial purposes. * - You are free to use and redistribute this code in modified or * unmodified form, provided you list me in the credits. * - If you modify this source code, you must add a notice to each modified * source file that it has been changed. If you're a nice person, you * will clearly mark each change too. :) * - If you wish to use this for commercial purposes, please contact me at * pullmoll@t-online.de * - The author of this copywritten work reserves the right to change the * terms of its usage and license at any time, including retroactively * - This entire notice must remain in the source code. * *****************************************************************************/ #include "emu.h" #include "debugger.h" #include "lr35902.h" enum e_mnemonics { zADC, zADD, zAND, zBIT, zCALL, zCCF, zCP, zCPL, zDAA, zDB, zDEC, zDI, zEI, zHLT, zIN, zINC, zJP, zJR, zLD, zNOP, zOR, zPOP, zPUSH, zRES, zRET, zRETI, zRL, zRLA, zRLC, zRLCA, zRR, zRRA, zRRC, zRRCA, zRST, zSBC, zSCF, zSET, zSLA, zSLL, zSRA, zSRL, zSTOP, zSUB, zXOR, zSWAP }; static const char *const s_mnemonic[] = { "adc", "add", "and", "bit", "call","ccf", "cp", "cpl", "daa", "db", "dec", "di", "ei", "halt", "in", "inc", "jp", "jr", "ld", "nop", "or", "pop", "push","res", "ret", "reti","rl", "rla", "rlc", "rlca","rr", "rra", "rrc", "rrca","rst", "sbc", "scf", "set", "sla", "sll", "sra", "srl", "stop","sub", "xor", "swap" }; #define _OVER DASMFLAG_STEP_OVER #define _OUT DASMFLAG_STEP_OUT static const UINT32 s_flags[] = { 0 ,0 ,0 ,0 ,_OVER,0 ,0 , 0 ,0 ,0 ,0 ,0 ,0 ,_OVER, 0 ,0 ,0 ,0 ,0 ,0 ,0 , 0 ,0 ,0 ,_OUT ,_OUT ,0 ,0 , 0 ,0 ,0 ,0 ,0 ,0 ,_OVER, 0 ,0 ,0 ,0 ,0 ,0 ,0 , _OVER,0 ,0 ,0 }; typedef struct { UINT8 mnemonic; const char *arguments; } lr35902dasm; static const lr35902dasm mnemonic_cb[256] = { {zRLC,"b"}, {zRLC,"c"}, {zRLC,"d"}, {zRLC,"e"}, {zRLC,"h"}, {zRLC,"l"}, {zRLC,"(hl)"}, {zRLC,"a"}, {zRRC,"b"}, {zRRC,"c"}, {zRRC,"d"}, {zRRC,"e"}, {zRRC,"h"}, {zRRC,"l"}, {zRRC,"(hl)"}, {zRRC,"a"}, {zRL,"b"}, {zRL,"c"}, {zRL,"d"}, {zRL,"e"}, {zRL,"h"}, {zRL,"l"}, {zRL,"(hl)"}, {zRL,"a"}, {zRR,"b"}, {zRR,"c"}, {zRR,"d"}, {zRR,"e"}, {zRR,"h"}, {zRR,"l"}, {zRR,"(hl)"}, {zRR,"a"}, {zSLA,"b"}, {zSLA,"c"}, {zSLA,"d"}, {zSLA,"e"}, {zSLA,"h"}, {zSLA,"l"}, {zSLA,"(hl)"}, {zSLA,"a"}, {zSRA,"b"}, {zSRA,"c"}, {zSRA,"d"}, {zSRA,"e"}, {zSRA,"h"}, {zSRA,"l"}, {zSRA,"(hl)"}, {zSRA,"a"}, {zSWAP,"b"}, {zSWAP,"c"}, {zSWAP,"d"}, {zSWAP,"e"}, {zSWAP,"h"}, {zSWAP,"l"}, {zSWAP,"(hl)"}, {zSWAP,"a"}, {zSRL,"b"}, {zSRL,"c"}, {zSRL,"d"}, {zSRL,"e"}, {zSRL,"h"}, {zSRL,"l"}, {zSRL,"(hl)"}, {zSRL,"a"}, {zBIT,"0,b"}, {zBIT,"0,c"}, {zBIT,"0,d"}, {zBIT,"0,e"}, {zBIT,"0,h"}, {zBIT,"0,l"}, {zBIT,"0,(hl)"},{zBIT,"0,a"}, {zBIT,"1,b"}, {zBIT,"1,c"}, {zBIT,"1,d"}, {zBIT,"1,e"}, {zBIT,"1,h"}, {zBIT,"1,l"}, {zBIT,"1,(hl)"},{zBIT,"1,a"}, {zBIT,"2,b"}, {zBIT,"2,c"}, {zBIT,"2,d"}, {zBIT,"2,e"}, {zBIT,"2,h"}, {zBIT,"2,l"}, {zBIT,"2,(hl)"},{zBIT,"2,a"}, {zBIT,"3,b"}, {zBIT,"3,c"}, {zBIT,"3,d"}, {zBIT,"3,e"}, {zBIT,"3,h"}, {zBIT,"3,l"}, {zBIT,"3,(hl)"},{zBIT,"3,a"}, {zBIT,"4,b"}, {zBIT,"4,c"}, {zBIT,"4,d"}, {zBIT,"4,e"}, {zBIT,"4,h"}, {zBIT,"4,l"}, {zBIT,"4,(hl)"},{zBIT,"4,a"}, {zBIT,"5,b"}, {zBIT,"5,c"}, {zBIT,"5,d"}, {zBIT,"5,e"}, {zBIT,"5,h"}, {zBIT,"5,l"}, {zBIT,"5,(hl)"},{zBIT,"5,a"}, {zBIT,"6,b"}, {zBIT,"6,c"}, {zBIT,"6,d"}, {zBIT,"6,e"}, {zBIT,"6,h"}, {zBIT,"6,l"}, {zBIT,"6,(hl)"},{zBIT,"6,a"}, {zBIT,"7,b"}, {zBIT,"7,c"}, {zBIT,"7,d"}, {zBIT,"7,e"}, {zBIT,"7,h"}, {zBIT,"7,l"}, {zBIT,"7,(hl)"},{zBIT,"7,a"}, {zRES,"0,b"}, {zRES,"0,c"}, {zRES,"0,d"}, {zRES,"0,e"}, {zRES,"0,h"}, {zRES,"0,l"}, {zRES,"0,(hl)"},{zRES,"0,a"}, {zRES,"1,b"}, {zRES,"1,c"}, {zRES,"1,d"}, {zRES,"1,e"}, {zRES,"1,h"}, {zRES,"1,l"}, {zRES,"1,(hl)"},{zRES,"1,a"}, {zRES,"2,b"}, {zRES,"2,c"}, {zRES,"2,d"}, {zRES,"2,e"}, {zRES,"2,h"}, {zRES,"2,l"}, {zRES,"2,(hl)"},{zRES,"2,a"}, {zRES,"3,b"}, {zRES,"3,c"}, {zRES,"3,d"}, {zRES,"3,e"}, {zRES,"3,h"}, {zRES,"3,l"}, {zRES,"3,(hl)"},{zRES,"3,a"}, {zRES,"4,b"}, {zRES,"4,c"}, {zRES,"4,d"}, {zRES,"4,e"}, {zRES,"4,h"}, {zRES,"4,l"}, {zRES,"4,(hl)"},{zRES,"4,a"}, {zRES,"5,b"}, {zRES,"5,c"}, {zRES,"5,d"}, {zRES,"5,e"}, {zRES,"5,h"}, {zRES,"5,l"}, {zRES,"5,(hl)"},{zRES,"5,a"}, {zRES,"6,b"}, {zRES,"6,c"}, {zRES,"6,d"}, {zRES,"6,e"}, {zRES,"6,h"}, {zRES,"6,l"}, {zRES,"6,(hl)"},{zRES,"6,a"}, {zRES,"7,b"}, {zRES,"7,c"}, {zRES,"7,d"}, {zRES,"7,e"}, {zRES,"7,h"}, {zRES,"7,l"}, {zRES,"7,(hl)"},{zRES,"7,a"}, {zSET,"0,b"}, {zSET,"0,c"}, {zSET,"0,d"}, {zSET,"0,e"}, {zSET,"0,h"}, {zSET,"0,l"}, {zSET,"0,(hl)"},{zSET,"0,a"}, {zSET,"1,b"}, {zSET,"1,c"}, {zSET,"1,d"}, {zSET,"1,e"}, {zSET,"1,h"}, {zSET,"1,l"}, {zSET,"1,(hl)"},{zSET,"1,a"}, {zSET,"2,b"}, {zSET,"2,c"}, {zSET,"2,d"}, {zSET,"2,e"}, {zSET,"2,h"}, {zSET,"2,l"}, {zSET,"2,(hl)"},{zSET,"2,a"}, {zSET,"3,b"}, {zSET,"3,c"}, {zSET,"3,d"}, {zSET,"3,e"}, {zSET,"3,h"}, {zSET,"3,l"}, {zSET,"3,(hl)"},{zSET,"3,a"}, {zSET,"4,b"}, {zSET,"4,c"}, {zSET,"4,d"}, {zSET,"4,e"}, {zSET,"4,h"}, {zSET,"4,l"}, {zSET,"4,(hl)"},{zSET,"4,a"}, {zSET,"5,b"}, {zSET,"5,c"}, {zSET,"5,d"}, {zSET,"5,e"}, {zSET,"5,h"}, {zSET,"5,l"}, {zSET,"5,(hl)"},{zSET,"5,a"}, {zSET,"6,b"}, {zSET,"6,c"}, {zSET,"6,d"}, {zSET,"6,e"}, {zSET,"6,h"}, {zSET,"6,l"}, {zSET,"6,(hl)"},{zSET,"6,a"}, {zSET,"7,b"}, {zSET,"7,c"}, {zSET,"7,d"}, {zSET,"7,e"}, {zSET,"7,h"}, {zSET,"7,l"}, {zSET,"7,(hl)"},{zSET,"7,a"} }; static const lr35902dasm mnemonic_main[256]= { {zNOP,0}, {zLD,"bc,N"}, {zLD,"(bc),a"}, {zINC,"bc"}, {zINC,"b"}, {zDEC,"b"}, {zLD,"b,B"}, {zRLCA,0}, {zLD,"(W),sp"}, {zADD,"hl,bc"}, {zLD,"a,(bc)"}, {zDEC,"bc"}, {zINC,"c"}, {zDEC,"c"}, {zLD,"c,B"}, {zRRCA,0}, {zSTOP,0}, {zLD,"de,N"}, {zLD,"(de),a"}, {zINC,"de"}, {zINC,"d"}, {zDEC,"d"}, {zLD,"d,B"}, {zRLA,0}, {zJR,"O"}, {zADD,"hl,de"}, {zLD,"a,(de)"}, {zDEC,"de"}, {zINC,"e"}, {zDEC,"e"}, {zLD,"e,B"}, {zRRA,0}, {zJR,"nz,O"}, {zLD,"hl,N"}, {zLD,"(hl+),a"},{zINC,"hl"}, {zINC,"h"}, {zDEC,"h"}, {zLD,"h,B"}, {zDAA,0}, {zJR,"z,O"}, {zADD,"hl,hl"}, {zLD,"a,(hl+)"},{zDEC,"hl"}, {zINC,"l"}, {zDEC,"l"}, {zLD,"l,B"}, {zCPL,0}, {zJR,"nc,O"}, {zLD,"sp,N"}, {zLD,"(hl-),a"},{zINC,"sp"}, {zINC,"(hl)"}, {zDEC,"(hl)"}, {zLD,"(hl),B"}, {zSCF,0}, {zJR,"c,O"}, {zADD,"hl,sp"}, {zLD,"a,(hl-)"},{zDEC,"sp"}, {zINC,"a"}, {zDEC,"a"}, {zLD,"a,B"}, {zCCF,0}, {zLD,"b,b"}, {zLD,"b,c"}, {zLD,"b,d"}, {zLD,"b,e"}, {zLD,"b,h"}, {zLD,"b,l"}, {zLD,"b,(hl)"}, {zLD,"b,a"}, {zLD,"c,b"}, {zLD,"c,c"}, {zLD,"c,d"}, {zLD,"c,e"}, {zLD,"c,h"}, {zLD,"c,l"}, {zLD,"c,(hl)"}, {zLD,"c,a"}, {zLD,"d,b"}, {zLD,"d,c"}, {zLD,"d,d"}, {zLD,"d,e"}, {zLD,"d,h"}, {zLD,"d,l"}, {zLD,"d,(hl)"}, {zLD,"d,a"}, {zLD,"e,b"}, {zLD,"e,c"}, {zLD,"e,d"}, {zLD,"e,e"}, {zLD,"e,h"}, {zLD,"e,l"}, {zLD,"e,(hl)"}, {zLD,"e,a"}, {zLD,"h,b"}, {zLD,"h,c"}, {zLD,"h,d"}, {zLD,"h,e"}, {zLD,"h,h"}, {zLD,"h,l"}, {zLD,"h,(hl)"}, {zLD,"h,a"}, {zLD,"l,b"}, {zLD,"l,c"}, {zLD,"l,d"}, {zLD,"l,e"}, {zLD,"l,h"}, {zLD,"l,l"}, {zLD,"l,(hl)"}, {zLD,"l,a"}, {zLD,"(hl),b"}, {zLD,"(hl),c"}, {zLD,"(hl),d"}, {zLD,"(hl),e"}, {zLD,"(hl),h"}, {zLD,"(hl),l"}, {zHLT,0}, {zLD,"(hl),a"}, {zLD,"a,b"}, {zLD,"a,c"}, {zLD,"a,d"}, {zLD,"a,e"}, {zLD,"a,h"}, {zLD,"a,l"}, {zLD,"a,(hl)"}, {zLD,"a,a"}, {zADD,"a,b"}, {zADD,"a,c"}, {zADD,"a,d"}, {zADD,"a,e"}, {zADD,"a,h"}, {zADD,"a,l"}, {zADD,"a,(hl)"},{zADD,"a,a"}, {zADC,"a,b"}, {zADC,"a,c"}, {zADC,"a,d"}, {zADC,"a,e"}, {zADC,"a,h"}, {zADC,"a,l"}, {zADC,"a,(hl)"},{zADC,"a,a"}, {zSUB,"b"}, {zSUB,"c"}, {zSUB,"d"}, {zSUB,"e"}, {zSUB,"h"}, {zSUB,"l"}, {zSUB,"(hl)"}, {zSUB,"a"}, {zSBC,"a,b"}, {zSBC,"a,c"}, {zSBC,"a,d"}, {zSBC,"a,e"}, {zSBC,"a,h"}, {zSBC,"a,l"}, {zSBC,"a,(hl)"},{zSBC,"a,a"}, {zAND,"b"}, {zAND,"c"}, {zAND,"d"}, {zAND,"e"}, {zAND,"h"}, {zAND,"l"}, {zAND,"(hl)"}, {zAND,"a"}, {zXOR,"b"}, {zXOR,"c"}, {zXOR,"d"}, {zXOR,"e"}, {zXOR,"h"}, {zXOR,"l"}, {zXOR,"(hl)"}, {zXOR,"a"}, {zOR,"b"}, {zOR,"c"}, {zOR,"d"}, {zOR,"e"}, {zOR,"h"}, {zOR,"l"}, {zOR,"(hl)"}, {zOR,"a"}, {zCP,"b"}, {zCP,"c"}, {zCP,"d"}, {zCP,"e"}, {zCP,"h"}, {zCP,"l"}, {zCP,"(hl)"}, {zCP,"a"}, {zRET,"nz"}, {zPOP,"bc"}, {zJP,"nz,A"}, {zJP,"A"}, {zCALL,"nz,A"}, {zPUSH,"bc"}, {zADD,"a,B"}, {zRST,"V"}, {zRET,"z"}, {zRET,0}, {zJP,"z,A"}, {zDB,"cb"}, {zCALL,"z,A"}, {zCALL,"A"}, {zADC,"a,B"}, {zRST,"V"}, {zRET,"nc"}, {zPOP,"de"}, {zJP,"nc,A"}, {zDB,"d3"}, {zCALL,"nc,A"}, {zPUSH,"de"}, {zSUB,"B"}, {zRST,"V"}, {zRET,"c"}, {zRETI,0}, {zJP,"c,A"}, {zDB,"db"}, {zCALL,"c,A"}, {zDB,"dd"}, {zSBC,"a,B"}, {zRST,"V"}, {zLD,"(F),a"}, {zPOP,"hl"}, {zLD,"(C),a"}, {zDB,"e3"}, {zDB,"e4"}, {zPUSH,"hl"}, {zAND,"B"}, {zRST,"V"}, {zADD,"SP,B"}, {zJP,"(hl)"}, {zLD,"(W),a"}, {zDB,"eb"}, {zDB,"ec"}, {zDB,"ed"}, {zXOR,"B"}, {zRST,"V"}, {zLD,"a,(F)"}, {zPOP,"af"}, {zLD,"a,(C)"}, {zDI,0}, {zDB,"f4"}, {zPUSH,"af"}, {zOR,"B"}, {zRST,"V"}, {zLD,"hl,sp+B"},{zLD,"sp,hl"}, {zLD,"a,(W)"}, {zEI,0}, {zDB,"fc"}, {zDB,"fd"}, {zCP,"B"}, {zRST,"V"} }; /**************************************************************************** * Disassemble opcode at PC and return number of bytes it takes ****************************************************************************/ CPU_DISASSEMBLE( lr35902 ) { const lr35902dasm *d; const char /* *symbol,*/ *src; char *dst; INT8 offset = 0; UINT8 op, op1; UINT16 ea = 0; int pos = 0; dst = buffer; //symbol = NULL; op = oprom[pos++]; op1 = 0; /* keep GCC happy */ if( op == 0xcb ) { op = oprom[pos++]; d = &mnemonic_cb[op]; } else { d = &mnemonic_main[op]; } if( d->arguments ) { dst += sprintf(dst, "%-4s ", s_mnemonic[d->mnemonic]); src = d->arguments; while( *src ) { switch( *src ) { case '?': /* illegal opcode */ dst += sprintf( dst, "$%02X,$%02X", op, op1); break; case 'A': ea = opram[pos] + ( opram[pos+1] << 8); pos += 2; dst += sprintf( dst, "$%04X", ea ); break; case 'B': /* Byte op arg */ ea = opram[pos++]; dst += sprintf( dst, "$%02X", ea ); break; case '(': /* Memory byte at (...) */ *dst++ = *src; if( !strncmp( src, "(bc)", 4) ) { } else if( !strncmp( src, "(de)", 4) ) { } else if( !strncmp( src, "(hl)", 4) ) { } else if( !strncmp( src, "(sp)", 4) ) { } else if( !strncmp( src, "(F)", 3) ) { ea = 0xFF00 + opram[pos++]; dst += sprintf( dst, "$%02X", ea ); src++; } else if( !strncmp( src, "(C)", 3) ) { dst += sprintf( dst, "$FF00+c" ); src++; } break; case 'N': /* Immediate 16 bit */ ea = opram[pos] + ( opram[pos+1] << 8 ); pos += 2; dst += sprintf( dst, "$%04X", ea ); break; case 'O': /* Offset relative to PC */ offset = (INT8) opram[pos++]; dst += sprintf( dst, "$%04X", pc + offset + 2 ); break; case 'V': /* Restart vector */ ea = op & 0x38; dst += sprintf( dst, "$%02X", ea ); break; case 'W': /* Memory address word */ ea = opram[pos] + ( opram[pos+1] << 8 ); pos += 2; dst += sprintf( dst, "$%04X", ea ); break; default: *dst++ = *src; } src++; } *dst = '\0'; } else { dst += sprintf(dst, "%s", s_mnemonic[d->mnemonic]); } return pos | s_flags[d->mnemonic] | DASMFLAG_SUPPORTED; }