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* Better fix for CPUID (and this time is the right time)

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7038 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
gnick79 2011-02-02 04:08:52 +00:00
parent 0f0adb4aee
commit ebc8f02885
1 changed files with 14 additions and 10 deletions
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24
Source/Core/Common/Src/CPUDetect.cpp
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@ -133,13 +133,15 @@ void CPUInfo::Detect()
strcpy(brand_string, cpu_string);
// Detect family and other misc stuff.
HTT = false;
bool ht = false;
HTT = ht;
logical_cpu_count = 1;
if (max_std_fn >= 1) {
__cpuid(cpu_id, 0x00000001);
logical_cpu_count = (cpu_id[1] >> 16) & 0xFF;
// HTT is valid for intel processors only.
HTT = ((cpu_id[3] >> 28) & 1) && vendor == VENDOR_INTEL;
ht = (cpu_id[3] >> 28) & 1;
// True HTT is valid for intel processors only.
HTT = (ht && vendor == VENDOR_INTEL);
if ((cpu_id[3] >> 25) & 1) bSSE = true;
if ((cpu_id[3] >> 26) & 1) bSSE2 = true;
if ((cpu_id[2]) & 1) bSSE3 = true;
@ -171,14 +173,16 @@ void CPUInfo::Detect()
__cpuid(cpu_id, 0x80000008);
int apic_id_core_id_size = (cpu_id[2] >> 12) & 0xF;
if (apic_id_core_id_size == 0) {
// New mechanism for modern CPUs.
num_cores = logical_cpu_count;
if (HTT) {
__cpuid(cpu_id, 0x00000004);
int cores_x_package = ((cpu_id[0] >> 26) & 0x3F) + 1;
cores_x_package = ((logical_cpu_count % cores_x_package) == 0) ? cores_x_package : 1;
num_cores = (cores_x_package > 1) ? cores_x_package : num_cores;
logical_cpu_count /= cores_x_package;
if (ht) {
// New mechanism for modern Intel CPUs.
if (HTT) {
__cpuid(cpu_id, 0x00000004);
int cores_x_package = ((cpu_id[0] >> 26) & 0x3F) + 1;
cores_x_package = ((logical_cpu_count % cores_x_package) == 0) ? cores_x_package : 1;
num_cores = (cores_x_package > 1) ? cores_x_package : num_cores;
logical_cpu_count /= cores_x_package;
}
}
else
{