UINT32 memory_array::read8_from_64be(int index) { return reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)]; }
void memory_array::write8_to_64be(int index, UINT32 data) { reinterpret_cast<UINT8 *>(m_base)[BYTE8_XOR_BE(index)] = data; }
offs_t activecpu_dasm(char *buffer, offs_t pc)
{
VERIFY_ACTIVECPU(activecpu_dasm);
/* allow overrides */
if (cpu_dasm_override)
{
offs_t result = cpu_dasm_override(activecpu, buffer, pc);
if (result)
return result;
}
/* if there's no old-style assembler, do some work to make this call work with the new one */
if (!cpu[activecpu].intf.disassemble)
{
int dbwidth = activecpu_databus_width(ADDRESS_SPACE_PROGRAM);
int maxbytes = activecpu_max_instruction_bytes();
int endianness = activecpu_endianness();
UINT8 opbuf[64], argbuf[64];
int xorval = 0;
int numbytes;
/* determine the XOR to get the bytes in order */
switch (dbwidth)
{
case 8: xorval = 0; break;
case 16: xorval = (endianness == CPU_IS_LE) ? BYTE_XOR_LE(0) : BYTE_XOR_BE(0); break;
case 32: xorval = (endianness == CPU_IS_LE) ? BYTE4_XOR_LE(0) : BYTE4_XOR_BE(0); break;
case 64: xorval = (endianness == CPU_IS_LE) ? BYTE8_XOR_LE(0) : BYTE8_XOR_BE(0); break;
}
/* fetch the bytes up to the maximum */
memset(opbuf, 0xff, sizeof(opbuf));
memset(argbuf, 0xff, sizeof(argbuf));
for (numbytes = 0; numbytes < maxbytes; numbytes++)
{
offs_t physpc = pc + numbytes;
const UINT8 *ptr;
/* translate the address, set the opcode base, and apply the byte xor */
if (!cpu[activecpu].intf.translate || (*cpu[activecpu].intf.translate)(ADDRESS_SPACE_PROGRAM, &physpc))
{
memory_set_opbase(physpc);
physpc ^= xorval;
/* get pointer to data */
ptr = memory_get_op_ptr(cpu_getactivecpu(), physpc, 0);
if (ptr)
{
opbuf[numbytes] = *ptr;
ptr = memory_get_op_ptr(cpu_getactivecpu(), physpc, 1);
if (ptr)
argbuf[numbytes] = *ptr;
else
argbuf[numbytes] = opbuf[numbytes];
}
}
}
return activecpu_dasm_new(buffer, pc, opbuf, argbuf, maxbytes);
}
return (*cpu[activecpu].intf.disassemble)(buffer, pc);
}
