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Merge pull request #3396 from FernandoS27/prometheus-1

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Implement SpinLocks, Fibers and a Host Timer
This commit is contained in:
David 2020-06-28 01:34:07 +10:00 • committed by GitHub
commit a83f0b607e
22 changed files with 1646 additions and 3 deletions
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33
src/common/x64/cpu_detect.cpp
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@ -62,6 +62,17 @@ static CPUCaps Detect() {
std::memcpy(&caps.brand_string[0], &cpu_id[1], sizeof(int));
std::memcpy(&caps.brand_string[4], &cpu_id[3], sizeof(int));
std::memcpy(&caps.brand_string[8], &cpu_id[2], sizeof(int));
if (cpu_id[1] == 0x756e6547 && cpu_id[2] == 0x6c65746e && cpu_id[3] == 0x49656e69)
caps.manufacturer = Manufacturer::Intel;
else if (cpu_id[1] == 0x68747541 && cpu_id[2] == 0x444d4163 && cpu_id[3] == 0x69746e65)
caps.manufacturer = Manufacturer::AMD;
else if (cpu_id[1] == 0x6f677948 && cpu_id[2] == 0x656e6975 && cpu_id[3] == 0x6e65476e)
caps.manufacturer = Manufacturer::Hygon;
else
caps.manufacturer = Manufacturer::Unknown;
u32 family = {};
u32 model = {};
__cpuid(cpu_id, 0x80000000);
@ -73,6 +84,14 @@ static CPUCaps Detect() {
// Detect family and other miscellaneous features
if (max_std_fn >= 1) {
__cpuid(cpu_id, 0x00000001);
family = (cpu_id[0] >> 8) & 0xf;
model = (cpu_id[0] >> 4) & 0xf;
if (family == 0xf) {
family += (cpu_id[0] >> 20) & 0xff;
}
if (family >= 6) {
model += ((cpu_id[0] >> 16) & 0xf) << 4;
}
if ((cpu_id[3] >> 25) & 1)
caps.sse = true;
@ -135,6 +154,20 @@ static CPUCaps Detect() {
caps.fma4 = true;
}
if (max_ex_fn >= 0x80000007) {
__cpuid(cpu_id, 0x80000007);
if (cpu_id[3] & (1 << 8)) {
caps.invariant_tsc = true;
}
}
if (max_std_fn >= 0x16) {
__cpuid(cpu_id, 0x16);
caps.base_frequency = cpu_id[0];
caps.max_frequency = cpu_id[1];
caps.bus_frequency = cpu_id[2];
}
return caps;
}