4 // gives access to the Pentium's (secret) cycle counter
6 // This software was written by Leonard Janke (janke@unixg.ubc.ca)
7 // in 1996-7 and is entered, by him, into the public domain.
9 #if defined(__WATCOMC__)
10 void GetTSC(unsigned long&);
11 #pragma aux GetTSC = 0x0f 0x31 "mov [edi], eax" parm [edi] modify [edx eax];
12 #elif defined(__GNUC__)
14 void GetTSC(unsigned long& tsc
)
16 asm volatile(".byte 15, 49\n\t"
21 #elif defined(_MSC_VER)
23 void GetTSC(unsigned long& tsc
)
35 #include <openssl/des.h>
37 void main(int argc
,char *argv
[])
40 unsigned long s1
,s2
,e1
,e2
;
41 unsigned long data
[2];
46 for (i
=0; i
<1000; i
++) /**/
48 des_encrypt1(&data
[0],key
,1);
50 des_encrypt1(&data
[0],key
,1);
51 des_encrypt1(&data
[0],key
,1);
52 des_encrypt1(&data
[0],key
,1);
55 des_encrypt1(&data
[0],key
,1);
56 des_encrypt1(&data
[0],key
,1);
57 des_encrypt1(&data
[0],key
,1);
58 des_encrypt1(&data
[0],key
,1);
60 des_encrypt1(&data
[0],key
,1);
63 printf("des %d %d (%d)\n",
64 e1
-s1
,e2
-s2
,((e2
-s2
)-(e1
-s1
)));