ddcpuid 0.18.1

ddcpuid, CPUID tool

ddcpuid is a x86 processor information tool. Currently supports Intel and AMD processors.

• Can be used as a stand-alone tool or as a DUB library.
• Fully supports DMD, GDC, and LDC.
• BetterC compatible, and used by default for the application.
• The library does not rely on any runtime (C, D) nor the OS.
• Surpasses CPU-Z, Intel's Go CPUID module, and Druntime's core.cpuid module.
• Currently featuring 240 CPUID bits documented and counting!

Want to better understand x86 and their technologies? There's the ddcpuid Technical Manual (PDF)!

Officially supports these vendors:

• "GenuineIntel" - Intel Corporation
• "AuthenticAMD" - Advanced Micro Devices Inc.
• "KVMKVMKVM\0\0\0" - Linux built-in Kernel Virtual Machine
• "Microsoft Hv" - Microsoft Hyper-V interface
• "VBoxVBoxVBox" - VirtualBox Hyper-V interface
• "\0\0\0\0\0\0\0\0\0\0\0\0" - VirtualBox minimal interface

Command Output Examples

On Host Computer

$ ddcpuid
Vendor      : GenuineIntel
Brand       : Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
Identifier  : Family 6 (0x6) [0x6:0x0] Model 58 (0x3a) [0xa:0x3] Stepping 9
Cores       : 8 threads
Extensions  : x87/FPU +F16C MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 Intel64/x86-64 +LAHF64 VT-x/VMX AES-NI AVX
Extra       : MONITOR+MWAIT +MIN=64 +MAX=64 PCLMULQDQ CMPXCHG8B CMPXCHG16B RDRAND RDMSR+WRMSR SYSENTER+SYSEXIT SYSCALL+SYSRET RDTSC +TSC-Deadline +TSC-Invariant RDTSCP CMOV FCOMI+FCMOV POPCNT XSAVE+XRSTOR XSETBV+XGETBV FXSAVE+FXRSTOR
Technologies: EIST TurboBoost Intel-TXT/SMX HTT
Cache       : CLFLUSH=64B SS
        L1-D: 4x   32 KiB, 8 ways, 1 parts, 64 B, 64 sets +SI
        L1-I: 4x   32 KiB, 8 ways, 1 parts, 64 B, 64 sets +SI
        L2-U: 4x  256 KiB, 8 ways, 1 parts, 64 B, 512 sets +SI
        L3-U: 1x    8 MiB, 16 ways, 1 parts, 64 B, 8192 sets +SI +CI +CCI
ACPI        : ACPI APIC x2APIC ARAT TM TM2 APIC-ID=6 MAX-ID=16
Virtual     : VME
Memory      : P-Bits=36 L-Bits=48 PAE PSE PSE-36 Intel-XD/NX PAT MTRR PGE SMEP
Debugging   : MCA MCE DE DS DS-CPL DTES64 PDCM PBE
Security    : IBRS STIBP SSBD L1D_FLUSH MD_CLEAR
Misc.       : HLeaf=0xd HVLeaf=0x0 HELeaf=0x80000008 Type=Original Index=0 xTPR PCID FSGSBASE

In Virtual Environment

$ ddcpuid
Vendor      : GenuineIntel
Brand       : Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
Identifier  : Family 6 (0x6) [0x6:0x0] Model 58 (0x3a) [0xa:0x3] Stepping 9
Cores       : 2 threads
Extensions  : x87/FPU MMX SSE SSE2 SSE3 SSSE3 SSE4.2 Intel64/x86-64 +LAHF64 AES-NI AVX
Extra       : PCLMULQDQ CMPXCHG8B CMPXCHG16B RDRAND RDMSR+WRMSR SYSENTER+SYSEXIT SYSCALL+SYSRET RDTSC +TSC-Invariant RDTSCP CMOV FCOMI+FCMOV POPCNT XSAVE+XRSTOR XSETBV+XGETBV FXSAVE+FXRSTOR
Technologies: HTT
Cache       : CLFLUSH=64B
	L1-D: 2x   32 KiB, 8 ways, 1 parts, 64 B, 64 sets +SI
	L1-I: 2x   32 KiB, 8 ways, 1 parts, 64 B, 64 sets +SI
	L2-U: 2x  256 KiB, 8 ways, 1 parts, 64 B, 512 sets +SI
	L3-U: 2x    8 MiB, 16 ways, 1 parts, 64 B, 8192 sets +SI +CI +CCI
ACPI        : APIC x2APIC APIC-ID=1 MAX-ID=2
Virtual     : VME HOST=KVMKVMKVM KVM_FEATURE_CLOCKSOURCE KVM_FEATURE_CLOCKSOURCE2 KVM_FEATURE_PV_UNHAULT KVM_FEATURE_CLOCSOURCE_STABLE_BIT
Memory      : P-Bits=36 L-Bits=48 PAE PSE PSE-36 Intel-XD/NX PAT MTRR PGE
Debugging   : MCA MCE DE
Security    : L1D_FLUSH MD_CLEAR
Misc.       : HLeaf=0xd HVLeaf=0x40000001 HELeaf=0x80000008 Type=Original Index=0 PCID FSGSBASE

Feature Level

$ ddcpuid --level
x86-64-v2

CPUID Table on Host Computer

$ ddcpuid --table
| Leaf     | Sub-leaf | EAX      | EBX      | ECX      | EDX      |
|----------|----------|----------|----------|----------|----------|
|        0 |        0 |        d | 756e6547 | 6c65746e | 49656e69 |
|        1 |        0 |    306a9 |  3100800 | 7fbae3ff | bfebfbff |
|        2 |        0 | 76035a01 |   f0b2ff |        0 |   ca0000 |
|        3 |        0 |        0 |        0 |        0 |        0 |
|        4 |        0 | 1c004121 |  1c0003f |       3f |        0 |
|        5 |        0 |       40 |       40 |        3 |     1120 |
|        6 |        0 |       77 |        2 |        9 |        0 |
|        7 |        0 |        0 |      281 |        0 | 9c000400 |
|        8 |        0 |        0 |        0 |        0 |        0 |
|        9 |        0 |        0 |        0 |        0 |        0 |
|        a |        0 |  7300403 |        0 |        0 |      603 |
|        b |        0 |        1 |        2 |      100 |        0 |
|        c |        0 |        0 |        0 |        0 |        0 |
|        d |        0 |        7 |      340 |      340 |        0 |
| 80000000 |        0 | 80000008 |        0 |        0 |        0 |
| 80000001 |        0 |        0 |        0 |        1 | 28100800 |
| 80000002 |        0 | 20202020 | 20202020 | 65746e49 | 2952286c |
| 80000003 |        0 | 726f4320 | 4d542865 | 37692029 | 3737332d |
| 80000004 |        0 | 50432030 | 20402055 | 30342e33 |   7a4847 |
| 80000005 |        0 |        0 |        0 |        0 |        0 |
| 80000006 |        0 |        0 |        0 |  1006040 |        0 |
| 80000007 |        0 |        0 |        0 |        0 |      100 |
| 80000008 |        0 |     3024 |        0 |        0 |        0 |

Compiling

The best way to compile ddcpuid is using DUB.

Compilers supported:

• DMD >= 2.068.0 (best supported)
• For earlier versions (tested on dmd 2.067.1), see manual compilation.
• LDC >= 1.0.0 (best optimizations, see LDC Issues)
• For 0.17.1, see how to perform a manual compilation.
• GDC >= 7.0.0 (good optimizations, see GDC Issues)

DUB

Using dub(1) is rather straightforward.

Once installed, navigate to the root directory of the project and to perform a debug build, simply do: dub build

For a release build: dub build -b release-nobounds

To select a different compiler: dub build --compiler=ldc2

For more information, visit this page.

Makefile

The Makefile relies on GNU Make (gmake/gnumake).

Available variables:

• DC: D compiler, defaults to dmd
• PREFIX: installation path prefix, defaults to /usr/local

Available actions:

• debug (default)
• release
• install
• uninstall

Examples:

• make: Produce a debug build
• make release DC=ldc: Produce a release build with LDC

Manually

Since ddcpuid only consists of two source files, both being in the src folder, it's still pretty simple to perform a compilation by hand.

Here's an example that works on any compiler:

dmd src/ddcpuid.d src/main.d -ofddcpuid
ldc2 src/ddcpuid.d src/main.d -ofddcpuid
gdc src/ddcpuid.d src/main.d -oddcpuid

If you want an optimized build:

dmd -betterC -release -O -boundscheck=off src/ddcpuid.d src/main.d -oddcpuid
ldc2 -betterC -release -O -boundscheck=off src/ddcpuid.d src/main.d -oddcpuid
gdc -fno-druntime -release -O -fbounds-check=off src/ddcpuid.d src/main.d -oddcpuid

You get the idea.

GDC Issues

GDC and betterC

Versions earlier than 11 will not compile using -fno-druntime due to linking issues: undefined reference to '__gdc_personality_v0'.

LDC Issues

Legacy stdio Definitions

On Windows, LDC versions 1.13 and 1.14 do not include legacy_stdio_definitions.lib when linking, making it impossible to compile the project using -betterC.