procesor x86/x64 W C#

Postanowiłem poprawić Twoją odpowiedź. Nie potrzebuje już niebezpiecznej kompilacji i potrzebuje tylko dwóch bloków montażowych, aby móc odczytać wszystkie bloki cpuid, ponieważ po prostu zapisuje eax / ebx / ecx / edx do 16-bajtowej tablicy bajtów.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
using System.Runtime.InteropServices;

namespace CpuID
{
    public class CpuID : IDisposable
    {
        [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
        public delegate void CpuIDDelegate(int level, byte[] buffer);

        [DllImport("kernel32.dll", SetLastError = true)]
        private static extern IntPtr VirtualAlloc(
            IntPtr lpAddress,
            UIntPtr dwSize,
            AllocationType flAllocationType, 
            MemoryProtection flProtect
        );

        [DllImport("kernel32")]
        private static extern bool VirtualFree(
                IntPtr lpAddress,
                UInt32 dwSize,
                UInt32 dwFreeType
        );

        [Flags()]
        public enum AllocationType : uint
        {
            COMMIT = 0x1000,
            RESERVE = 0x2000,
            RESET = 0x80000,
            LARGE_PAGES = 0x20000000,
            PHYSICAL = 0x400000,
            TOP_DOWN = 0x100000,
            WRITE_WATCH = 0x200000
        }

        [Flags()]
        public enum MemoryProtection : uint
        {
            EXECUTE = 0x10,
            EXECUTE_READ = 0x20,
            EXECUTE_READWRITE = 0x40,
            EXECUTE_WRITECOPY = 0x80,
            NOACCESS = 0x01,
            READONLY = 0x02,
            READWRITE = 0x04,
            WRITECOPY = 0x08,
            GUARD_Modifierflag = 0x100,
            NOCACHE_Modifierflag = 0x200,
            WRITECOMBINE_Modifierflag = 0x400
        }

        private CpuIDDelegate cpuIdDelg;

        private IntPtr codePointer;

        // void x86CpuId(int level, byte* buffer) 
        // {
        //    eax = level
        //    cpuid
        //    buffer[0] = eax
        //    buffer[4] = ebx
        //    buffer[8] = ecx
        //    buffer[12] = edx
        // }
        private byte[] x86CodeBytes = 
        {
            0x55,                   // push        ebp  
            0x8B, 0xEC,             // mov         ebp,esp
            0x53,                   // push        ebx  
            0x57,                   // push        edi

            0x8B, 0x45, 0x08,       // mov         eax, dword ptr [ebp+8] (move level into eax)
            0x0F, 0xA2,              // cpuid

            0x8B, 0x7D, 0x0C,       // mov         edi, dword ptr [ebp+12] (move address of buffer into edi)
            0x89, 0x07,             // mov         dword ptr [edi+0], eax  (write eax, ... to buffer)
            0x89, 0x5F, 0x04,       // mov         dword ptr [edi+4], ebx 
            0x89, 0x4F, 0x08,       // mov         dword ptr [edi+8], ecx 
            0x89, 0x57, 0x0C,       // mov         dword ptr [edi+12],edx 

            0x5F,                   // pop         edi  
            0x5B,                   // pop         ebx  
            0x8B, 0xE5,             // mov         esp,ebp  
            0x5D,                   // pop         ebp 
            0xc3                    // ret
        };

        private byte[] x64CodeBytes = 
        {
            0x53,                       // push rbx    this gets clobbered by cpuid

            // rcx is level
            // rdx is buffer.
            // Need to save buffer elsewhere, cpuid overwrites rdx
            // Put buffer in r8, use r8 to reference buffer later.

            // Save rdx (buffer addy) to r8
            0x49, 0x89, 0xd0,           // mov r8,  rdx

            // Move ecx (level) to eax to call cpuid, call cpuid
            0x89, 0xc8,                 // mov eax, ecx
            0x0F, 0xA2,                 // cpuid

            // Write eax et al to buffer
            0x41, 0x89, 0x40, 0x00,     // mov    dword ptr [r8+0],  eax
            0x41, 0x89, 0x58, 0x04,     // mov    dword ptr [r8+4],  ebx
            0x41, 0x89, 0x48, 0x08,     // mov    dword ptr [r8+8],  ecx
            0x41, 0x89, 0x50, 0x0c,     // mov    dword ptr [r8+12], edx

            0x5b,                       // pop rbx
            0xc3                        // ret
        };

        public CpuID()
        {
            Compile();
        }

        ~CpuID()
        {
            Dispose(false);
        }

        private void Compile()
        {
            byte[] codeBytes;

            if (IntPtr.Size == 4)
            {
                codeBytes = x86CodeBytes;
            }
            else
            {
                codeBytes = x64CodeBytes;
            }

            this.codePointer = VirtualAlloc(
                IntPtr.Zero,
                new UIntPtr((uint)codeBytes.Length),
                AllocationType.COMMIT | AllocationType.RESERVE,
                MemoryProtection.EXECUTE_READWRITE
            );

            Marshal.Copy(codeBytes, 0, this.codePointer, codeBytes.Length);

            this.cpuIdDelg = (CpuIDDelegate)Marshal.GetDelegateForFunctionPointer(this.codePointer, typeof(CpuIDDelegate));
        }

        public void Invoke(int level, byte[] buffer)
        {
            GCHandle handle = default(GCHandle);
            if (buffer.Length < 16)
            {
                throw new ArgumentException("buffer must be at least 16 bytes long");
            }

            try
            {
                handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);

                this.cpuIdDelg(level, buffer);
            }
            finally
            {
                if (handle != default(GCHandle))
                {
                    handle.Free();
                }
            }
        }

        public void Dispose()
        {
            Dispose(true);
        }

        public void Dispose(bool disposing)
        {
            if (this.codePointer != IntPtr.Zero)
            {
                VirtualFree(this.codePointer, 0, 0x8000);
                this.codePointer = IntPtr.Zero;
            }
        }

    }
}

Wziąłem kod @ antiduh i przekształciłem go w statyczną metodę, więc nie ma żadnego cyklu życia obiektu do zarządzania. Jest to wolniejsze, ponieważ kod ASM nie jest ponownie używany między wywołaniami wywołania (), ale kompromis szybkości dla prostoty ma sens dla mojego przypadku użycia. Ta nowa wersja może wywołać CPUID 1000 razy w 15 milisekund na moim komputerze.

Dzięki za wspaniałych ludzi kodu!

public static class CpuID {

    public static byte[] Invoke(int level) {
        IntPtr codePointer = IntPtr.Zero;
        try {
            // compile
            byte[] codeBytes;
            if (IntPtr.Size == 4) {
                codeBytes = x86CodeBytes;
            } else {
                codeBytes = x64CodeBytes;
            }

            codePointer = VirtualAlloc(
                IntPtr.Zero,
                new UIntPtr((uint)codeBytes.Length),
                AllocationType.COMMIT | AllocationType.RESERVE,
                MemoryProtection.EXECUTE_READWRITE
            );

            Marshal.Copy(codeBytes, 0, codePointer, codeBytes.Length);

            CpuIDDelegate cpuIdDelg = (CpuIDDelegate)Marshal.GetDelegateForFunctionPointer(codePointer, typeof(CpuIDDelegate));

            // invoke
            GCHandle handle = default(GCHandle);
            var buffer = new byte[16];

            try {
                handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
                cpuIdDelg(level, buffer);
            } finally {
                if (handle != default(GCHandle)) {
                    handle.Free();
                }
            }

            return buffer;
        } finally {
            if (codePointer != IntPtr.Zero) {
                VirtualFree(codePointer, 0, 0x8000);
                codePointer = IntPtr.Zero;
            }
        }
    }

    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
    private delegate void CpuIDDelegate(int level, byte[] buffer);

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern IntPtr VirtualAlloc(IntPtr lpAddress, UIntPtr dwSize, AllocationType flAllocationType,
        MemoryProtection flProtect);

    [DllImport("kernel32")]
    private static extern bool VirtualFree(IntPtr lpAddress, UInt32 dwSize, UInt32 dwFreeType);

    [Flags()]
    private enum AllocationType : uint {
        COMMIT = 0x1000,
        RESERVE = 0x2000,
        RESET = 0x80000,
        LARGE_PAGES = 0x20000000,
        PHYSICAL = 0x400000,
        TOP_DOWN = 0x100000,
        WRITE_WATCH = 0x200000
    }

    [Flags()]
    private enum MemoryProtection : uint {
        EXECUTE = 0x10,
        EXECUTE_READ = 0x20,
        EXECUTE_READWRITE = 0x40,
        EXECUTE_WRITECOPY = 0x80,
        NOACCESS = 0x01,
        READONLY = 0x02,
        READWRITE = 0x04,
        WRITECOPY = 0x08,
        GUARD_Modifierflag = 0x100,
        NOCACHE_Modifierflag = 0x200,
        WRITECOMBINE_Modifierflag = 0x400
    }

    // Basic ASM strategy --
    // void x86CpuId(int level, byte* buffer) 
    // {
    //    eax = level
    //    cpuid
    //    buffer[0] = eax
    //    buffer[4] = ebx
    //    buffer[8] = ecx
    //    buffer[12] = edx
    // }

    private readonly static byte[] x86CodeBytes = {
        0x55,                   // push        ebp  
        0x8B, 0xEC,             // mov         ebp,esp
        0x53,                   // push        ebx  
        0x57,                   // push        edi

        0x8B, 0x45, 0x08,       // mov         eax, dword ptr [ebp+8] (move level into eax)
        0x0F, 0xA2,              // cpuid

        0x8B, 0x7D, 0x0C,       // mov         edi, dword ptr [ebp+12] (move address of buffer into edi)
        0x89, 0x07,             // mov         dword ptr [edi+0], eax  (write eax, ... to buffer)
        0x89, 0x5F, 0x04,       // mov         dword ptr [edi+4], ebx 
        0x89, 0x4F, 0x08,       // mov         dword ptr [edi+8], ecx 
        0x89, 0x57, 0x0C,       // mov         dword ptr [edi+12],edx 

        0x5F,                   // pop         edi  
        0x5B,                   // pop         ebx  
        0x8B, 0xE5,             // mov         esp,ebp  
        0x5D,                   // pop         ebp 
        0xc3                    // ret
    };

    private readonly static byte[] x64CodeBytes = {
        0x53,                       // push rbx    this gets clobbered by cpuid

        // rcx is level
        // rdx is buffer.
        // Need to save buffer elsewhere, cpuid overwrites rdx
        // Put buffer in r8, use r8 to reference buffer later.

        // Save rdx (buffer addy) to r8
        0x49, 0x89, 0xd0,           // mov r8,  rdx

        // Move ecx (level) to eax to call cpuid, call cpuid
        0x89, 0xc8,                 // mov eax, ecx
        0x0F, 0xA2,                 // cpuid

        // Write eax et al to buffer
        0x41, 0x89, 0x40, 0x00,     // mov    dword ptr [r8+0],  eax
        0x41, 0x89, 0x58, 0x04,     // mov    dword ptr [r8+4],  ebx
        0x41, 0x89, 0x48, 0x08,     // mov    dword ptr [r8+8],  ecx
        0x41, 0x89, 0x50, 0x0c,     // mov    dword ptr [r8+12], edx

        0x5b,                       // pop rbx
        0xc3                        // ret
    };
}

Czy mogę zaproponować następującą stronę: http://devpinoy.org/blogs/cvega/archive/2006/04/07/2658.aspx

Ta strona pokaże Ci kod źródłowy asemblera dla CPUID, jak skompilować go do biblioteki DLL i jak wywołać go z C#.

Również jeśli potrzebujesz innych procedur identyfikacji sprzętu, mogę zasugerować tę stronę: http://www.codeproject.com/KB/system/GetHardwareInformation.aspx

Ta strona pokazuje, jak uzyskać informacje, takie jak płyta główna, dysk twardy informacje, informacje o procesorze, informacje o karcie graficznej itp.

Dodatkowo, aby uzyskać CPUID4, potrzebny jest jeszcze jeden argument. Oto jak uzyskać CPUID0, CPUID1, CPUID2, CPUID4.

byte[] cpuid0 = Invoke(0, 0);
byte[] cpuid1 = Invoke(1, 0);
byte[] cpuid2 = Invoke(2, 0);

List<byte[]> cpuid4L = new List<byte[]>();
for (int i = 0; true; i++)
{
    byte[] cpuid4 = Invoke(4, (uint)i);
    if ( (cpuid4[0] & 0x0F) == 0)
        break;
    cpuid4L.Add(cpuid4);
}

private static byte[] Invoke(uint functionNum, uint ecx)
{
    IntPtr codePointer = IntPtr.Zero;

    try
    {
        // Select a code
        byte[] codeBytes;
        if (IntPtr.Size == 4)
            codeBytes = x86CodeBytes;
        else
            codeBytes = x64CodeBytes;

        codePointer = NativeMethods.VirtualAlloc(IntPtr.Zero, new UIntPtr((uint)codeBytes.Length), MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
        Marshal.Copy(codeBytes, 0, codePointer, codeBytes.Length);
        CpuIdDelegate cpuIdDelg = (CpuIdDelegate)Marshal.GetDelegateForFunctionPointer(codePointer, typeof(CpuIdDelegate));

        // Invoke the code
        GCHandle handle = default(GCHandle);
        var buffer = new byte[16];

        try
        {
            handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            cpuIdDelg(ecx, functionNum, buffer);  // Run the assembly code.
        }
        finally
        {
            if (handle != default(GCHandle))
            {
                handle.Free();
            }
        }

        return buffer;
    }
    finally
    {
        if (codePointer != IntPtr.Zero)
        {
            NativeMethods.VirtualFree(codePointer, (UIntPtr) 0, MEM_RELEASE);
            codePointer = IntPtr.Zero;
        }
    }
}

private readonly static byte[] x86CodeBytes = {
    0x55,                   
    0x8B, 0xEC,             
    0x53,                   
    0x57,                   
    0x8B, 0x4D, 0x08,
    0x8B, 0x45, 0x0C,
    0x0F, 0xA2,      
    0x8B, 0x7D, 0x10,
    0x89, 0x07,      
    0x89, 0x5F, 0x04,
    0x89, 0x4F, 0x08,
    0x89, 0x57, 0x0C,
    0x5F,                   
    0x5B,                   
    0x8B, 0xE5,             
    0x5D,                   
    0xc3                    
};

private readonly static byte[] x64CodeBytes = {
    0x53,
    0x89, 0xD0,
    0x0F, 0xA2,
    0x41, 0x89, 0x40, 0x00,
    0x41, 0x89, 0x58, 0x04,
    0x41, 0x89, 0x48, 0x08,
    0x41, 0x89, 0x50, 0x0c,
    0x5b,
    0xc3
};

Podziękowania dla @ antiduh za jego rozwiązanie. Zmieniłbym trochę sygnaturę wywołania dla lepszej użyteczności w następujący sposób, więc nie musisz przydzielać get the result jako zestawu rejestrów

    // This is a modification to https://stackoverflow.com/a/7964376/725903
    [UnmanagedFunctionPointerAttribute(CallingConvention.Cdecl)]
    private delegate void CpuIDDelegate(int level, IntPtr ptr);

    [StructLayout(LayoutKind.Sequential, Size = 16)]
    public struct CpuIdResult
    {
        public int Eax;
        public int Ebx;
        public int Ecx;
        public int Edx;
    }

    public CpuIdResult Invoke(int level)
    {
        CpuIdResult result;
        IntPtr buffer = Marshal.AllocHGlobal(16);
        try
        {
            this.cpuIdDelg(level, buffer);
            result = (CpuIdResult)Marshal.PtrToStructure(buffer, typeof(CpuIdResult));
        }
        finally
        {
            Marshal.FreeHGlobal(buffer);
        }
        return result;
    }