Problem statement: http://www.cse.iitd.ernet.in/~sbansal/csl862/pa1/ Count total no. of instructions, inc , call and ret instructions. (Only for i386) Qemu-Version: 0.12.5 Files modified: 1. qemu-0.12.5/target-i386/op_helper.c 2. qemu-0.12.5/target-i386/helper.h 3. qemu-0.12.5/target-i386/translate.c 1. Replace attached files in qemu and make. 2. Run qemu with -d option (output log to /tmp/qemu.log) 3. Results in logfile(By default- /tmp/qemu.log) 4. cat /tmp/qemu.log Basic Idea: The key is to declare these four functions to count different type of instruction: count_insn(void) inccount_insn(void) callcount_insn(void) retcount_insn(void) And, then call them in file "translate.c"