OVMS3-idf/components/ulp/esp32ulp_mapgen.py
2018-12-17 07:52:38 +01:00

54 lines
2 KiB
Python
Executable file

#!/usr/bin/env python
# esp32ulp_mapgen utility converts a symbol list provided by nm into an export script
# for the linker and a header file.
#
# Copyright (c) 2016-2017 Espressif Systems (Shanghai) PTE LTD.
# Distributed under the terms of Apache License v2.0 found in the top-level LICENSE file.
from optparse import OptionParser
BASE_ADDR = 0x50000000
def gen_ld_h_from_sym(f_sym, f_ld, f_h):
f_ld.write("/* Variable definitions for ESP32ULP linker\n")
f_ld.write(" * This file is generated automatically by esp32ulp_mapgen.py utility.\n")
f_ld.write(" */\n\n")
f_h.write("// Variable definitions for ESP32ULP\n")
f_h.write("// This file is generated automatically by esp32ulp_mapgen.py utility\n\n")
f_h.write("#pragma once\n\n")
for line in f_sym:
name, _, addr_str = line.split()
addr = int(addr_str, 16) + BASE_ADDR
f_h.write("extern uint32_t ulp_{0};\n".format(name))
f_ld.write("PROVIDE ( ulp_{0} = 0x{1:08x} );\n".format(name, addr))
def main():
description = ("This application generates .h and .ld files for symbols defined in input file. "
"The input symbols file can be generated using nm utility like this: "
"esp32-ulp-nm -g -f posix <elf_file> > <symbols_file>")
parser = OptionParser(description=description)
parser.add_option("-s", "--symfile", dest="symfile",
help="symbols file name", metavar="SYMFILE")
parser.add_option("-o", "--outputfile", dest="outputfile",
help="destination .h and .ld files name prefix", metavar="OUTFILE")
(options, args) = parser.parse_args()
if options.symfile is None:
parser.print_help()
return 1
if options.outputfile is None:
parser.print_help()
return 1
with open(options.outputfile + ".h", 'w') as f_h, open(options.outputfile + ".ld", 'w') as f_ld, open(options.symfile) as f_sym:
gen_ld_h_from_sym(f_sym, f_ld, f_h)
return 0
if __name__ == "__main__":
exit(main())