thelazytomcat/lib.simplecpuid

Small library designed to provide some basic parsed information (mainly CPU features) obtained by the CPUID instruction on x86(-64) processors.

lib.simplecpuid's Issues

Possible minor error in GetCR0

In this function, on line 569:

  Function GetCR0: NativeUInt; assembler; register;
  asm
  // CR0 is not accessible in user mode (this function will cause exception).
  // If anyone have any idea on how to read CR0 from normal program, let me know.
  {$IFDEF x64}
    DB  $0F, $20, $C0   // MOV  RAX,  CR0 (problems in FPC before 3.0)
  {$ELSE}
    MOV     EAX,  CR0
  {$ENDIF}
  end;  

I believe the MOV instruction should be

    MOV     RAX,  CR0

As far as using this (since it uses a privileged register), have you considered setting up a Linux distribution, install Free Pascal, write a test rig, then sudo the program? Or in the alternative, compile it and a test rig on Windows, then run it using "run as Administrator"?

Skip the last one, running as Administrator doesn't work either. I just tried it. Oh well.