//// 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__)inlinevoid GetTSC(unsigned long& tsc){  asm volatile(".byte 15, 49\n\t"	       : "=eax" (tsc)	       :	       : "%edx", "%eax");}#elif defined(_MSC_VER)inlinevoid 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/rc4.h>void main(int argc,char *argv[])	{	unsigned char buffer[1024];	RC4_KEY ctx;	unsigned long s1,s2,e1,e2;	unsigned char k[16];	unsigned long data[2];	unsigned char iv[8];	int i,num=64,numm;	int j=0;	if (argc >= 2)		num=atoi(argv[1]);	if (num == 0) num=256;	if (num > 1024-16) num=1024-16;	numm=num+8;	for (j=0; j<6; j++)		{		for (i=0; i<10; i++) /**/			{			RC4(&ctx,numm,buffer,buffer);			GetTSC(s1);			RC4(&ctx,numm,buffer,buffer);			GetTSC(e1);			GetTSC(s2);			RC4(&ctx,num,buffer,buffer);			GetTSC(e2);			RC4(&ctx,num,buffer,buffer);			}		printf("RC4 (%d bytes) %d %d (%d) - 8 bytes\n",num,			e1-s1,e2-s2,(e1-s1)-(e2-s2));		}	}