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      1 //
      2 // gettsc.inl
      3 //
      4 // gives access to the Pentium's (secret) cycle counter
      5 //
      6 // This software was written by Leonard Janke (janke (at) unixg.ubc.ca)
      7 // in 1996-7 and is entered, by him, into the public domain.
      8 
      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__)
     13 inline
     14 void GetTSC(unsigned long& tsc)
     15 {
     16   asm volatile(".byte 15, 49\n\t"
     17 	       : "=eax" (tsc)
     18 	       :
     19 	       : "%edx", "%eax");
     20 }
     21 #elif defined(_MSC_VER)
     22 inline
     23 void GetTSC(unsigned long& tsc)
     24 {
     25   unsigned long a;
     26   __asm _emit 0fh
     27   __asm _emit 31h
     28   __asm mov a, eax;
     29   tsc=a;
     30 }
     31 #endif
     32 
     33 #include <stdio.h>
     34 #include <stdlib.h>
     35 #include <openssl/sha.h>
     36 
     37 #define sha1_block_x86 sha1_block_asm_data_order
     38 extern "C" {
     39 void sha1_block_x86(SHA_CTX *ctx, unsigned char *buffer,int num);
     40 }
     41 
     42 void main(int argc,char *argv[])
     43 	{
     44 	unsigned char buffer[64*256];
     45 	SHA_CTX ctx;
     46 	unsigned long s1,s2,e1,e2;
     47 	unsigned char k[16];
     48 	unsigned long data[2];
     49 	unsigned char iv[8];
     50 	int i,num=0,numm;
     51 	int j=0;
     52 
     53 	if (argc >= 2)
     54 		num=atoi(argv[1]);
     55 
     56 	if (num == 0) num=16;
     57 	if (num > 250) num=16;
     58 	numm=num+2;
     59 #if 0
     60 	num*=64;
     61 	numm*=64;
     62 #endif
     63 
     64 	for (j=0; j<6; j++)
     65 		{
     66 		for (i=0; i<10; i++) /**/
     67 			{
     68 			sha1_block_x86(&ctx,buffer,numm);
     69 			GetTSC(s1);
     70 			sha1_block_x86(&ctx,buffer,numm);
     71 			GetTSC(e1);
     72 			GetTSC(s2);
     73 			sha1_block_x86(&ctx,buffer,num);
     74 			GetTSC(e2);
     75 			sha1_block_x86(&ctx,buffer,num);
     76 			}
     77 
     78 		printf("sha1 (%d bytes) %d %d (%.2f)\n",num*64,
     79 			e1-s1,e2-s2,(double)((e1-s1)-(e2-s2))/2);
     80 		}
     81 	}
     82 
     83