// // 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/sha.h> #define sha1_block_x86 sha1_block_asm_data_order extern "C" { void sha1_block_x86(SHA_CTX *ctx, unsigned char *buffer,int num); } void main(int argc,char *argv[]) { unsigned char buffer[64*256]; SHA_CTX ctx; unsigned long s1,s2,e1,e2; unsigned char k[16]; unsigned long data[2]; unsigned char iv[8]; int i,num=0,numm; int j=0; if (argc >= 2) num=atoi(argv[1]); if (num == 0) num=16; if (num > 250) num=16; numm=num+2; #if 0 num*=64; numm*=64; #endif for (j=0; j<6; j++) { for (i=0; i<10; i++) /**/ { sha1_block_x86(&ctx,buffer,numm); GetTSC(s1); sha1_block_x86(&ctx,buffer,numm); GetTSC(e1); GetTSC(s2); sha1_block_x86(&ctx,buffer,num); GetTSC(e2); sha1_block_x86(&ctx,buffer,num); } printf("sha1 (%d bytes) %d %d (%.2f)\n",num*64, e1-s1,e2-s2,(double)((e1-s1)-(e2-s2))/2); } }