// license:BSD-3-Clause // copyright-holders:Ryan Holtz #include "emu.h" #include "superfx.h" static char *output; static void ATTR_PRINTF(1,2) print(const char *fmt, ...) { va_list vl; va_start(vl, fmt); output += vsprintf(output, fmt, vl); va_end(vl); } offs_t superfx_dasm_one(char *buffer, offs_t pc, UINT8 op, UINT8 param0, UINT8 param1, UINT16 alt) { UINT8 bytes_consumed = 1; output = buffer; switch(op) { case 0x00: // STOP print("STOP"); break; case 0x01: // NOP print("NOP"); break; case 0x02: // CACHE print("CACHE"); break; case 0x03: // LSR print("LSR"); break; case 0x04: // ROL print("ROL"); break; case 0x05: // BRA print("BRA %d", (INT8)param0); bytes_consumed = 2; break; case 0x06: // BLT print("BLT %d", (INT8)param0); bytes_consumed = 2; break; case 0x07: // BGE print("BGE %d", (INT8)param0); bytes_consumed = 2; break; case 0x08: // BNE print("BNE %d", (INT8)param0); bytes_consumed = 2; break; case 0x09: // BEQ print("BEQ %d", (INT8)param0); bytes_consumed = 2; break; case 0x0a: // BPL print("BPL %d", (INT8)param0); bytes_consumed = 2; break; case 0x0b: // BMI print("BMI %d", (INT8)param0); bytes_consumed = 2; break; case 0x0c: // BCC print("BCC %d", (INT8)param0); bytes_consumed = 2; break; case 0x0d: // BCS print("BCS %d", (INT8)param0); bytes_consumed = 2; break; case 0x0e: // BVC print("BVC %d", (INT8)param0); bytes_consumed = 2; break; case 0x0f: // BVS print("BVS %d", (INT8)param0); bytes_consumed = 2; break; case 0x10: case 0x11: case 0x12: case 0x13: case 0x14: case 0x15: case 0x16: case 0x17: case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: // TO print("TO R%d", op & 0xf); break; case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: // WITH print("WITH R%d", op & 0xf); break; case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: case 0x3a: case 0x3b: // STW_IR / STB_IR switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("STW (R%d)", op & 0xf); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("STB (R%d)", op & 0xf); break; } break; case 0x3c: // LOOP print("LOOP"); break; case 0x3d: // ALT1 print("ALT1"); break; case 0x3e: // ALT2 print("ALT2"); break; case 0x3f: // ALT3 print("ALT3"); 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: // LDW_IR / LDB_IR switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("LDW (R%d)", op & 0xf); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("LDB (R%d)", op & 0xf); break; } break; case 0x4c: // PLOT / RPIX switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("PLOT"); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("RPIX"); break; } break; case 0x4d: // SWAP print("SWAP"); break; case 0x4e: // COLOR / CMODE switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("COLOR"); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("CMODE"); break; } break; case 0x4f: // NOT print("NOT"); break; 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: // ADD / ADC / ADDI / ADCI switch(alt) { case SUPERFX_SFR_ALT0: print("ADD R%d", op &0xf); break; case SUPERFX_SFR_ALT1: print("ADC R%d", op &0xf); break; case SUPERFX_SFR_ALT2: print("ADDI R%d", op &0xf); break; case SUPERFX_SFR_ALT3: print("ADCI R%d", op &0xf); break; } break; 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: // SUB / SBC / SUBI / CMP switch(alt) { case SUPERFX_SFR_ALT0: print("SUB R%d", op &0xf); break; case SUPERFX_SFR_ALT1: print("SBC R%d", op &0xf); break; case SUPERFX_SFR_ALT2: print("SUBI R%d", op &0xf); break; case SUPERFX_SFR_ALT3: print("CMP R%d", op &0xf); break; } break; case 0x70: // MERGE print("MERGE"); break; case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: case 0x78: case 0x79: case 0x7a: case 0x7b: case 0x7c: case 0x7d: case 0x7e: case 0x7f: // AND / BIC / ANDI / BICI switch(alt) { case SUPERFX_SFR_ALT0: print("AND R%d", op &0xf); break; case SUPERFX_SFR_ALT1: print("BIC R%d", op &0xf); break; case SUPERFX_SFR_ALT2: print("ANDI R%d", op &0xf); break; case SUPERFX_SFR_ALT3: print("BICI R%d", op &0xf); break; } break; case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: case 0x88: case 0x89: case 0x8a: case 0x8b: case 0x8c: case 0x8d: case 0x8e: case 0x8f: // MULT / UMULT / MULTI / UMULTI switch(alt) { case SUPERFX_SFR_ALT0: print("MULT R%d", op &0xf); break; case SUPERFX_SFR_ALT1: print("UMULT R%d", op &0xf); break; case SUPERFX_SFR_ALT2: print("MULTI R%d", op &0xf); break; case SUPERFX_SFR_ALT3: print("UMULTI R%d", op &0xf); break; } break; case 0x90: // SBK print("SBK"); break; case 0x91: case 0x92: case 0x93: case 0x94: // LINK print("LINK %d", op & 0xf); break; case 0x95: // SEX print("SEX"); break; case 0x96: // ASR / DIV2 switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("ASR"); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("DIV2"); break; } break; case 0x97: // ROR print("ROR"); break; case 0x98: case 0x99: case 0x9a: case 0x9b: case 0x9c: case 0x9d: // JMP / LJMP switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("JMP R%d", op & 0xf); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("LJMP R%d", op & 0xf); break; } break; case 0x9e: // LOB print("LOB"); break; case 0x9f: // FMULT / LMULT switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT2: print("FMULT"); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("LMULT"); break; } break; case 0xa0: case 0xa1: case 0xa2: case 0xa3: case 0xa4: case 0xa5: case 0xa6: case 0xa7: case 0xa8: case 0xa9: case 0xaa: case 0xab: case 0xac: case 0xad: case 0xae: case 0xaf: // IBT / LMS / SMS / LML switch(alt) { case SUPERFX_SFR_ALT0: print("IBT R%d,0x%02x", op & 0xf, param0); break; case SUPERFX_SFR_ALT2: print("SMS R%d,(0x%04x)", op & 0xf, param0 << 1); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("LMS R%d,(0x%04x)", op & 0xf, param0 << 1); break; } bytes_consumed = 2; break; case 0xb0: case 0xb1: case 0xb2: case 0xb3: case 0xb4: case 0xb5: case 0xb6: case 0xb7: case 0xb8: case 0xb9: case 0xba: case 0xbb: case 0xbc: case 0xbd: case 0xbe: case 0xbf: // FROM print("FROM R%d", op & 0xf); break; case 0xc0: // HIB print("HIB"); break; case 0xc1: case 0xc2: case 0xc3: case 0xc4: case 0xc5: case 0xc6: case 0xc7: case 0xc8: case 0xc9: case 0xca: case 0xcb: case 0xcc: case 0xcd: case 0xce: case 0xcf: // OR / XOR / ORI / XORI switch(alt) { case SUPERFX_SFR_ALT0: print("OR R%d", op &0xf); break; case SUPERFX_SFR_ALT1: print("XOR R%d", op &0xf); break; case SUPERFX_SFR_ALT2: print("ORI R%d", op &0xf); break; case SUPERFX_SFR_ALT3: print("XORI R%d", op &0xf); break; } break; case 0xd0: case 0xd1: case 0xd2: case 0xd3: case 0xd4: case 0xd5: case 0xd6: case 0xd7: case 0xd8: case 0xd9: case 0xda: case 0xdb: case 0xdc: case 0xdd: case 0xde: // INC print("INC R%d", op & 0xf); break; case 0xdf: // GETC / RAMB / ROMB switch(alt) { case SUPERFX_SFR_ALT0: case SUPERFX_SFR_ALT1: print("GETC"); break; case SUPERFX_SFR_ALT2: print("RAMB"); break; case SUPERFX_SFR_ALT3: print("ROMB"); break; } break; case 0xe0: case 0xe1: case 0xe2: case 0xe3: case 0xe4: case 0xe5: case 0xe6: case 0xe7: case 0xe8: case 0xe9: case 0xea: case 0xeb: case 0xec: case 0xed: case 0xee: // DEC print("DEC R%d", op & 0xf); break; case 0xef: // GETB / GETBH / GETBL / GETBS switch(alt) { case SUPERFX_SFR_ALT0: print("GETB"); break; case SUPERFX_SFR_ALT1: print("GETBH"); break; case SUPERFX_SFR_ALT2: print("GETBL"); break; case SUPERFX_SFR_ALT3: print("GETBS"); break; } break; case 0xf0: case 0xf1: case 0xf2: case 0xf3: case 0xf4: case 0xf5: case 0xf6: case 0xf7: case 0xf8: case 0xf9: case 0xfa: case 0xfb: case 0xfc: case 0xfd: case 0xfe: case 0xff: // IWT / LM / SM / LM switch(alt) { case SUPERFX_SFR_ALT0: print("IWT R%d,#%02x%02x", op & 0xf, param1, param0); bytes_consumed = 3; break; case SUPERFX_SFR_ALT2: print("SM R%d", op & 0xf); break; case SUPERFX_SFR_ALT1: case SUPERFX_SFR_ALT3: print("LM R%d", op & 0xf); break; } break; } return bytes_consumed | DASMFLAG_SUPPORTED; }