분류 전체보기
-
-
-
-
-
-
pwnable.kr - memcpypwnable.kr 2023. 5. 4. 19:32
// compiled with : gcc -o memcpy memcpy.c -m32 -lm #include #include #include #include #include #include #include unsigned long long rdtsc(){ asm("rdtsc"); // Measuring the clock cycle } // copy 1 byte at a time char* slow_memcpy(char* dest, const char* src, size_t len){ int i; for (i=0; i= 64){ i = len / 64; len &= (64-1); // remainder while(i-- > 0){ // inline assembly __asm__ __volatile__ ( "..
-
-