#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)));
}
}