nodemcu-firmware/tools/gen_appbin.py

#!/usr/bin/python
#
#  Copyright (c) 2010 Espressif System
#
#     grab user_start() address and pass it to genflashbin program
#

import string
import sys
import os
import re

if len(sys.argv) != 3:
    print 'Usage: gen_appbin.py eagle.app.out version'
    sys.exit(0)

elf_file = sys.argv[1]
ver = sys.argv[2]
#print elf_file

cmd = 'xtensa-lx106-elf-nm -g ' + elf_file + ' > eagle.app.sym'
#print cmd
os.system(cmd)

fp = file('./eagle.app.sym')
if fp is None:
    print "open sym file error\n"
    exit

lines = fp.readlines()

fp.close()

entry_addr = None
p = re.compile('(\w*)(\sT\s)(call_user_start)$')
for line in lines:
    m = p.search(line)
    if m != None:
        entry_addr = m.group(1)
        #entry_addr = int(entry_addr, 16)
        print entry_addr

if entry_addr is None:
    print 'no entry point!!'
    exit

data_start_addr = '0'
p = re.compile('(\w*)(\sA\s)(_data_start)$')
for line in lines:
    m = p.search(line)
    if m != None:
        data_start_addr = m.group(1)
        print data_start_addr

rodata_start_addr = '0'
p = re.compile('(\w*)(\sA\s)(_rodata_start)$')
for line in lines:
    m = p.search(line)
    if m != None:
        rodata_start_addr = m.group(1)
        print rodata_start_addr

# need to replace this with esptool.py
cmd = 'genflashbin%s eagle.app.%s.text.bin '%(ver, ver)+entry_addr+' eagle.app.%s.data.bin '%(ver)+ data_start_addr+' eagle.app.%s.rodata.bin '%(ver)+rodata_start_addr

print cmd
os.system(cmd)

cmd = 'mv eagle.app.flash.bin eagle.app.%s.flash.bin'%(ver)

print cmd
os.system(cmd)