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oh/scripts/elf2hex

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2020-02-06 10:05:55 -05:00
#!/usr/bin/env python3
#############################################################################
# elf2hex <inputfile> <outputfile> <memory-width> [-emf] [-offset]
#
# Script uses objcopy to dump a a
#
# The script assumes the hex file has max 16 byte entries per line
#
# Script also supports creating EMF transactions with one address per data
#
#############################################################################
import sys
import re
hexin = sys.argv[1]
hexout = sys.argv[2]
width = int(int(sys.argv[3])/8) #needed for both
emf = 0 # emf
offset = 0 #TODO: specify as hex offset, only for emf
#1. Read file into list and strip off trail junk
list = [line.rstrip(' \n') for line in open(hexin)]
#2. Loop through byte list and print to output file
fileout=open(hexout,"w")
for line in list:
if (~line.find('@')): #detects new memory section
address = offset + int(line.replace('@','',1),16)
if(emf):
print ("Not Implemented")
else:
file.write("@"+format(address, 'x'))
else:
bytes=line.split(' ')
length=len(bytes)
for i in range(0,(16-length)): # zero extend buffer for simplicity
bytes.append("00")
for i in range(0,16,width):
sublist=bytes[i:i+width]
sublist.reverse()
word=""
word=word.join(sublist)
if(emf):
print ("Not Implemented")
else :
file.write(word)
file.close()