diff options
Diffstat (limited to 'src/devices/cpu/tms7000/7000dasm.cpp')
-rw-r--r-- | src/devices/cpu/tms7000/7000dasm.cpp | 120 |
1 files changed, 55 insertions, 65 deletions
diff --git a/src/devices/cpu/tms7000/7000dasm.cpp b/src/devices/cpu/tms7000/7000dasm.cpp index 1f7f8549852..000c7ea2ea3 100644 --- a/src/devices/cpu/tms7000/7000dasm.cpp +++ b/src/devices/cpu/tms7000/7000dasm.cpp @@ -7,24 +7,9 @@ */ #include "emu.h" -#include "debugger.h" -#include "tms7000.h" +#include "7000dasm.h" -enum operandtype { DONE, NONE, UI8, I8, UI16, I16, PCREL, PCABS, TRAP }; - -struct oprandinfo { - char opstr[4][12]; - operandtype decode[4]; -}; - -struct tms7000_opcodeinfo { - int opcode; - char name[8]; - int operand; - uint32_t s_flag; -}; - -static const oprandinfo of[] = { +const tms7000_disassembler::oprandinfo tms7000_disassembler::of[] = { /* 00 */ { {" B,A", "", "", ""}, {NONE, DONE, DONE, DONE} }, /* 01 */ { {" R%u", ",A", "", ""}, {UI8, NONE, DONE, DONE} }, /* 02 */ { {" R%u", ",B", "", ""}, {UI8, NONE, DONE, DONE} }, @@ -84,7 +69,7 @@ static const oprandinfo of[] = { /* 45 */ { {" *R%u", "", "", ""}, {UI8, DONE, DONE, DONE} } }; -static const tms7000_opcodeinfo opcodes[] = { +const tms7000_disassembler::tms7000_opcodeinfo tms7000_disassembler::opcs[] = { {0x69, "ADC", 0, 0 }, {0x19, "ADC", 1, 0 }, {0x39, "ADC", 2, 0 }, @@ -141,9 +126,9 @@ static const tms7000_opcodeinfo opcodes[] = { {0x97, "BTJZP", 21, 0 }, {0xA7, "BTJZP", 22, 0 }, - {0x8E, "CALL", 43, DASMFLAG_STEP_OVER }, - {0x9E, "CALL", 45, DASMFLAG_STEP_OVER }, - {0xAE, "CALL", 12, DASMFLAG_STEP_OVER }, + {0x8E, "CALL", 43, STEP_OVER }, + {0x9E, "CALL", 45, STEP_OVER }, + {0xAE, "CALL", 12, STEP_OVER }, {0xB5, "CLR A", 23, 0 }, {0xC5, "CLR B", 23, 0 }, @@ -273,8 +258,8 @@ static const tms7000_opcodeinfo opcodes[] = { {0xD8, "PUSH", 24, 0 }, {0x0E, "PUSH ST", 23, 0 }, - {0x0B, "RETI", 23, DASMFLAG_STEP_OUT }, - {0x0A, "RETS", 23, DASMFLAG_STEP_OUT }, + {0x0B, "RETI", 23, STEP_OUT }, + {0x0A, "RETS", 23, STEP_OUT }, {0xBE, "RL A", 23, 0 }, {0xCE, "RL B", 23, 0 }, @@ -316,30 +301,30 @@ static const tms7000_opcodeinfo opcodes[] = { {0x5A, "SUB", 5, 0 }, {0x7A, "SUB", 6, 0 }, - {0xFF, "TRAP 0", 44, DASMFLAG_STEP_OVER }, - {0xFE, "TRAP 1", 44, DASMFLAG_STEP_OVER }, - {0xFD, "TRAP 2", 44, DASMFLAG_STEP_OVER }, - {0xFC, "TRAP 3", 44, DASMFLAG_STEP_OVER }, - {0xFB, "TRAP 4", 44, DASMFLAG_STEP_OVER }, - {0xFA, "TRAP 5", 44, DASMFLAG_STEP_OVER }, - {0xF9, "TRAP 6", 44, DASMFLAG_STEP_OVER }, - {0xF8, "TRAP 7", 44, DASMFLAG_STEP_OVER }, - {0xF7, "TRAP 8", 44, DASMFLAG_STEP_OVER }, - {0xF6, "TRAP 9", 44, DASMFLAG_STEP_OVER }, - {0xF5, "TRAP 10", 44, DASMFLAG_STEP_OVER }, - {0xF4, "TRAP 11", 44, DASMFLAG_STEP_OVER }, - {0xF3, "TRAP 12", 44, DASMFLAG_STEP_OVER }, - {0xF2, "TRAP 13", 44, DASMFLAG_STEP_OVER }, - {0xF1, "TRAP 14", 44, DASMFLAG_STEP_OVER }, - {0xF0, "TRAP 15", 44, DASMFLAG_STEP_OVER }, - {0xEF, "TRAP 16", 44, DASMFLAG_STEP_OVER }, - {0xEE, "TRAP 17", 44, DASMFLAG_STEP_OVER }, - {0xED, "TRAP 18", 44, DASMFLAG_STEP_OVER }, - {0xEC, "TRAP 19", 44, DASMFLAG_STEP_OVER }, - {0xEB, "TRAP 20", 44, DASMFLAG_STEP_OVER }, - {0xEA, "TRAP 21", 44, DASMFLAG_STEP_OVER }, - {0xE9, "TRAP 22", 44, DASMFLAG_STEP_OVER }, - {0xE8, "TRAP 23", 44, DASMFLAG_STEP_OVER }, + {0xFF, "TRAP 0", 44, STEP_OVER }, + {0xFE, "TRAP 1", 44, STEP_OVER }, + {0xFD, "TRAP 2", 44, STEP_OVER }, + {0xFC, "TRAP 3", 44, STEP_OVER }, + {0xFB, "TRAP 4", 44, STEP_OVER }, + {0xFA, "TRAP 5", 44, STEP_OVER }, + {0xF9, "TRAP 6", 44, STEP_OVER }, + {0xF8, "TRAP 7", 44, STEP_OVER }, + {0xF7, "TRAP 8", 44, STEP_OVER }, + {0xF6, "TRAP 9", 44, STEP_OVER }, + {0xF5, "TRAP 10", 44, STEP_OVER }, + {0xF4, "TRAP 11", 44, STEP_OVER }, + {0xF3, "TRAP 12", 44, STEP_OVER }, + {0xF2, "TRAP 13", 44, STEP_OVER }, + {0xF1, "TRAP 14", 44, STEP_OVER }, + {0xF0, "TRAP 15", 44, STEP_OVER }, + {0xEF, "TRAP 16", 44, STEP_OVER }, + {0xEE, "TRAP 17", 44, STEP_OVER }, + {0xED, "TRAP 18", 44, STEP_OVER }, + {0xEC, "TRAP 19", 44, STEP_OVER }, + {0xEB, "TRAP 20", 44, STEP_OVER }, + {0xEA, "TRAP 21", 44, STEP_OVER }, + {0xE9, "TRAP 22", 44, STEP_OVER }, + {0xE8, "TRAP 23", 44, STEP_OVER }, {0xB7, "SWAP A", 23, 0 }, {0xC7, "SWAP B", 23, 0 }, @@ -367,17 +352,22 @@ static const tms7000_opcodeinfo opcodes[] = { {0x00, "NOP", 23, 0 } }; -CPU_DISASSEMBLE(tms7000) +u32 tms7000_disassembler::opcode_alignment() const +{ + return 1; +} + +offs_t tms7000_disassembler::disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) { int opcode, i/*, size = 1*/; - int pos = 0; + offs_t pos = pc; char tmpbuf[32]; - opcode = oprom[pos++]; + opcode = opcodes.r8(pos++); - for( i=0; i<sizeof(opcodes) / sizeof(tms7000_opcodeinfo); i++ ) + for( i=0; i<sizeof(opcs) / sizeof(tms7000_opcodeinfo); i++ ) { - if( opcode == opcodes[i].opcode ) + if( opcode == opcs[i].opcode ) { /* We found a match */ @@ -387,9 +377,9 @@ CPU_DISASSEMBLE(tms7000) uint16_t c; int16_t d; - util::stream_format(stream, "%s", opcodes[i].name); + util::stream_format(stream, "%s", opcs[i].name); - j=opcodes[i].operand; + j=opcs[i].operand; for( k=0; k<4; k++ ) { @@ -401,34 +391,34 @@ CPU_DISASSEMBLE(tms7000) util::stream_format(stream, "%s", of[j].opstr[k]); break; case UI8: - a = (uint8_t)opram[pos++]; + a = (uint8_t)params.r8(pos++); util::stream_format(stream, of[j].opstr[k], (unsigned int)a); break; case I8: - b = (int8_t)opram[pos++]; + b = (int8_t)params.r8(pos++); util::stream_format(stream, of[j].opstr[k], (int8_t)b); break; case UI16: - c = (uint16_t)opram[pos++]; + c = (uint16_t)params.r8(pos++); c <<= 8; - c += opram[pos++]; + c += params.r8(pos++); util::stream_format(stream, of[j].opstr[k], (unsigned int)c); break; case I16: - d = (int16_t)opram[pos++]; + d = (int16_t)params.r8(pos++); d <<= 8; - d += opram[pos++]; + d += params.r8(pos++); util::stream_format(stream, of[j].opstr[k], (signed int)d); break; case PCREL: - b = (int8_t)opram[pos++]; + b = (int8_t)params.r8(pos++); sprintf(tmpbuf, "$%04X", pc+2+k+b); util::stream_format(stream, of[j].opstr[k], tmpbuf); break; case PCABS: - c = (uint16_t)opram[pos++]; + c = (uint16_t)params.r8(pos++); c <<= 8; - c += opram[pos++]; + c += params.r8(pos++); sprintf(tmpbuf, "$%04X", c); util::stream_format(stream, of[j].opstr[k], tmpbuf); break; @@ -438,11 +428,11 @@ CPU_DISASSEMBLE(tms7000) break; } } - return pos | opcodes[i].s_flag | DASMFLAG_SUPPORTED; + return (pos - pc) | opcs[i].s_flag | SUPPORTED; } } /* No Match */ stream << "Illegal Opcode"; - return pos | DASMFLAG_SUPPORTED; + return (pos - pc) | SUPPORTED; } |