static void I486OP(cpuid)(i386_state *cpustate) // Opcode 0x0F A2
{
if (cpustate->cpuid_id0 == 0)
{
// this 486 doesn't support the CPUID instruction
logerror("CPUID not supported at %08x!\n", cpustate->eip);
i386_trap(cpustate, 6, 0, 0);
}
else
{
switch (REG32(EAX))
{
case 0:
{
REG32(EAX) = cpustate->cpuid_max_input_value_eax;
REG32(EBX) = cpustate->cpuid_id0;
REG32(ECX) = cpustate->cpuid_id2;
REG32(EDX) = cpustate->cpuid_id1;
CYCLES(cpustate,CYCLES_CPUID);
break;
}
case 1:
{
REG32(EAX) = cpustate->cpu_version;
REG32(EDX) = cpustate->feature_flags;
CYCLES(cpustate,CYCLES_CPUID_EAX1);
break;
}
}
}
}
void i386_device::i486_cpuid() // Opcode 0x0F A2
{
if (m_cpuid_id0 == 0)
{
// this 486 doesn't support the CPUID instruction
logerror("CPUID not supported at %08x!\n", m_eip);
i386_trap(6, 0, 0);
}
else
{
switch (REG32(EAX))
{
case 0:
{
REG32(EAX) = m_cpuid_max_input_value_eax;
REG32(EBX) = m_cpuid_id0;
REG32(ECX) = m_cpuid_id2;
REG32(EDX) = m_cpuid_id1;
CYCLES(CYCLES_CPUID);
break;
}
case 1:
{
REG32(EAX) = m_cpu_version;
REG32(EDX) = m_feature_flags;
CYCLES(CYCLES_CPUID_EAX1);
break;
}
}
}
}
