//

 // gettsc.inl

 //

 // gives access to the Pentium's (secret) cycle counter

 //

 // This software was written by Leonard Janke (janke@unixg.ubc.ca)

 // in 1996-7 and is entered, by him, into the public domain.

 #if defined(__WATCOMC__)

 void GetTSC(unsigned long&);

 #pragma aux GetTSC = 0x0f 0x31 "mov [edi], eax" parm [edi] modify [edx eax];

 #elif defined(__GNUC__)

 inline

 void GetTSC(unsigned long& tsc)

 {

   asm volatile(".byte 15, 49\n\t"

 	       : "=eax" (tsc)

 	       :

 	       : "%edx", "%eax");

 }

 #elif defined(_MSC_VER)

 inline

 void GetTSC(unsigned long& tsc)

 {

   unsigned long a;

   __asm _emit 0fh

   __asm _emit 31h

   __asm mov a, eax;

   tsc=a;

 }

 #endif      

 #include <stdio.h>

 #include <stdlib.h>

 #include <openssl/des.h>

 void main(int argc,char *argv[])

 	{

 	des_key_schedule key1,key2,key3;

 	unsigned long s1,s2,e1,e2;

 	unsigned long data[2];

 	int i,j;

 	for (j=0; j<6; j++)

 		{

 		for (i=0; i<1000; i++) /**/

 			{

 			des_encrypt3(&data[0],key1,key2,key3);

 			GetTSC(s1);

 			des_encrypt3(&data[0],key1,key2,key3);

 			des_encrypt3(&data[0],key1,key2,key3);

 			des_encrypt3(&data[0],key1,key2,key3);

 			GetTSC(e1);

 			GetTSC(s2);

 			des_encrypt3(&data[0],key1,key2,key3);

 			des_encrypt3(&data[0],key1,key2,key3);

 			des_encrypt3(&data[0],key1,key2,key3);

 			des_encrypt3(&data[0],key1,key2,key3);

 			GetTSC(e2);

 			des_encrypt3(&data[0],key1,key2,key3);

 			}

 		printf("des %d %d (%d)\n",

 			e1-s1,e2-s2,((e2-s2)-(e1-s1)));

 		}

 	}