offs_t activecpu_dasm(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram)
{
unsigned result;
VERIFY_ACTIVECPU(activecpu_dasm);
/* check for disassembler override */
if (cpu_dasm_override[activecpu])
{
result = (*cpu_dasm_override[activecpu])(buffer, pc, oprom, opram);
if (result != 0)
return result;
}
if (cpu[activecpu].intf.disassemble != NULL)
{
result = (*cpu[activecpu].intf.disassemble)(buffer, pc, oprom, opram);
}
else
{
/* if no disassembler present, dump vanilla bytes */
switch (activecpu_min_instruction_bytes())
{
case 1:
default:
sprintf(buffer, "$%02X", (unsigned) *((UINT8 *) oprom));
result = 1;
break;
case 2:
sprintf(buffer, "$%04X", (unsigned) *((UINT16 *) oprom));
result = 2;
break;
case 4:
sprintf(buffer, "$%08X", (unsigned) *((UINT32 *) oprom));
result = 4;
break;
}
}
/* make sure we get good results */
assert((result & DASMFLAG_LENGTHMASK) != 0);
#ifdef MAME_DEBUG
{
int shift = activecpu_addrbus_shift(ADDRESS_SPACE_PROGRAM);
int bytes = (shift < 0) ? ((result & DASMFLAG_LENGTHMASK) << -shift) : ((result & DASMFLAG_LENGTHMASK) >> shift);
assert(bytes >= activecpu_min_instruction_bytes());
assert(bytes <= activecpu_max_instruction_bytes());
(void) bytes; /* appease compiler */
}
#endif
return result;
}
unsigned activecpu_dasm_new(char *buffer, offs_t pc, UINT8 *oprom, UINT8 *opram, int bytes)
{
unsigned result;
VERIFY_ACTIVECPU(activecpu_dasm_new);
if (cpu[activecpu].intf.disassemble_new)
{
result = (*cpu[activecpu].intf.disassemble_new)(buffer, pc, oprom, opram, bytes);
}
else
{
/* if no disassembler present, dump vanilla bytes */
switch(activecpu_min_instruction_bytes())
{
case 1:
default:
sprintf(buffer, "$%02X", (unsigned) *((UINT8 *) oprom));
result = 1;
break;
case 2:
sprintf(buffer, "$%04X", (unsigned) *((UINT16 *) oprom));
result = 2;
break;
case 4:
sprintf(buffer, "$%08X", (unsigned) *((UINT32 *) oprom));
result = 4;
break;
}
}
return result;
}
