#!/usr/bin/python
"""
  * Author: Tiago Maluta 
  * Info: www.coding.com.br
  * Usage: 
  	
	$ python stats_opcode.py file

  * How to generate assembly (.s) output?

  	1) gcc -S hello.c
	2) gcc --save-temps hello.c // will create more file, check 'man' 

  * Licence: Public Domain
"""
import os
import sys

try:
	output = open(sys.argv[1],"r+").readlines()
except:
	exit(-1)

inst = [] # instructions list 

for line in output:
	if not line.startswith('\t.') and line.startswith('\t'): 
		if not line.startswith('\t@'):
			inst.append(line.split('\t')[1].replace('\n',''))

D = {} 
for i in inst:
	D[i] = inst.count(i)

total_instructions = len(inst)
unique_instructions = len(D.keys())

print "Your program has %s instructions (%s unique)" % ( total_instructions, unique_instructions ) 

print "+-------+-------+---------------+"
print "|Opcode\t| Times\t| Average(%)\t|"
print "+-------+-------+---------------+"
for opcode in D.keys():
	print "|%s\t| %s\t| %0.2f %%\t|" % ( opcode, D.get(opcode) , float(D.get(opcode)) / total_instructions * 100)
print "+-------+-------+---------------+"