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Implemented GetCPUCycleSpeed

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This commit is contained in:
Quajak 2019-10-11 15:22:24 -04:00
parent c0d41f2e13
commit cfc41ea088
2 changed files with 80 additions and 19 deletions
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15
Tests/Kernels/ProcessorTests/Kernel.cs
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@ -24,8 +24,8 @@ namespace ProcessorTests
{
//TestVendorNameIsNotBlank();
TestCycleCount();
//TestCycleRateIsNotZero();
TestCycleRateIsNotZero();
TestController.Completed();
}
catch (Exception e)
@ -39,7 +39,7 @@ namespace ProcessorTests
public void TestVendorNameIsNotBlank()
{
string vendorName = CPU.GetCPUVendorName();
mDebugger.Send(vendorName);
mDebugger.Send("Vendor name: " + vendorName);
bool isVendorNameBlank = string.IsNullOrWhiteSpace(vendorName);
mDebugger.Send("Vendor name: ");
mDebugger.Send(vendorName);
@ -49,13 +49,9 @@ namespace ProcessorTests
public void TestCycleCount()
{
ulong cycleCount = CPU.GetCPUUptime();
mDebugger.Send("Cycle count: " + cycleCount);
mDebugger.SendNumber(cycleCount);
bool isCycleCountZero = cycleCount == 0;
Assert.IsFalse(isCycleCountZero, "Processor cycle count is zero.");
Assert.IsFalse(isCycleCountZero, "Processor cycle count is not zero.");
ulong secondCount = CPU.GetCPUUptime();
mDebugger.Send("Cycle count: " + secondCount);
mDebugger.SendNumber(secondCount);
Assert.IsTrue(secondCount > cycleCount, "Processor cycle count is increasing");
}
@ -63,7 +59,8 @@ namespace ProcessorTests
{
long cycleRate = CPU.GetCPUCycleSpeed();
bool isCycleRateZero = cycleRate == 0;
Assert.IsFalse(isCycleRateZero, "Processor cycle rate is zero.");
Assert.IsFalse(isCycleRateZero, "Processor cycle rate is not zero.");
Assert.IsTrue(CPU.GetCPUCycleSpeed() == cycleRate, "Processor cycle speed is not constant");
}
}
}

84
source/Cosmos.Core/CPU.cs
View file

@ -1,4 +1,5 @@
using System;
using System.Collections.Generic;
using IL2CPU.API.Attribs;
namespace Cosmos.Core
@ -110,18 +111,81 @@ namespace Cosmos.Core
{
if (CanReadCPUID() != 0)
{
// TODO read cpuid response and do a bitwise and 0x0000ffff
// See https://c9x.me/x86/html/file_module_x86_id_45.html
int eax = 0;
int ebx = 0;
int ecx = 0;
int edx = 0;
ReadCPUID(16, ref eax, ref ebx, ref ecx, ref edx); // 16 is max cycle rate
Global.mDebugger.Send("GetCPUCycleSpeed Registers");
Global.mDebugger.SendNumber(eax);
Global.mDebugger.SendNumber(ebx);
Global.mDebugger.SendNumber(ecx);
Global.mDebugger.SendNumber(edx);
return 0;
string s = "";
for (uint i = 0; i < 3; i++)
{
ReadCPUID(0x80000002 + i, ref eax, ref ebx, ref ecx, ref edx);
s += (char)(ebx % 256);
s += (char)((ebx >> 8) % 256);
s += (char)((ebx>> 16) % 256);
s += (char)((ebx >> 24) % 256);
s += (char)(edx % 256);
s += (char)((edx >> 8) % 256);
s += (char)((edx >> 16) % 256);
s += (char)((edx >> 24) % 256);
s += (char)(ecx % 256);
s += (char)((ecx >> 8) % 256);
s += (char)((ecx >> 16) % 256);
s += (char)((ecx >> 24) % 256);
}
var _words = new List<string>();
string curr = "";
for (int i = 0; i < s.Length; i++)
{
if (s[i] == ' ' || (byte)s[i] == 0)
{
if (curr != "")
{
_words.Add(curr);
}
curr = "";
}
else
{
curr += s[i];
}
}
_words.Add(curr);
string[] words = _words.ToArray();
string[] w = new string[words.Length];
for (int i = 0; i < words.Length; i++)
{
w[i] = words[words.Length - i - 1];
}
words = w;
double multiplier = 0;
double value = 0;
for (int i = 0; i < words.Length; i++)
{
if (words[i] == "MHz")
{
multiplier = 10e6;
break;
}
else if (words[i] == "GHz")
{
multiplier = 10e9;
break;
}
else if (words[i] == "THz")
{
multiplier = 10e12;
break;
}
else if (value == 0)
{
Double.TryParse(words[i], out value);
}
}
value *= multiplier;
return (long)value;
}
throw new NotSupportedException();
@ -129,10 +193,10 @@ namespace Cosmos.Core
internal static int CanReadCPUID() => throw new NotImplementedException();
internal static void ReadCPUID(int type, ref int eax, ref int ebx, ref int ecx, ref int edx) => throw new NotImplementedException();
internal static void ReadCPUID(uint type, ref int eax, ref int ebx, ref int ecx, ref int edx) => throw new NotImplementedException();
internal static ulong ReadTimestampCounter() => throw new NotImplementedException();
internal static int[] ReadFromModelSpecificRegister() => throw new NotImplementedException();
internal static ulong ReadFromModelSpecificRegister() => throw new NotImplementedException();
}
}