You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

84 lines
3.0 KiB

#!/usr/bin/env python3
#
# This file is part of the MicroPython project, http://micropython.org/
#
# The MIT License (MIT)
#
# Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import re
import sys
# Handle size constants with K or M suffixes (allowed in .ld but not in Python).
K_PATTERN = re.compile(r'([0-9]+)K')
K_REPLACE = r'(\1*1024)'
M_PATTERN = re.compile(r'([0-9]+)M')
M_REPLACE = r'(\1*1024*1024)'
print()
text = 0
data = 0
bss = 0
# stdin is the linker output.
for line in sys.stdin:
# Uncomment to see linker output.
# print(line)
line = line.strip()
if not line.startswith("text"):
text, data, bss = map(int, line.split()[:3])
regions = {}
# This file is the linker script.
with open(sys.argv[1], "r") as f:
for line in f:
line = line.strip()
if line.startswith(("FLASH_FIRMWARE", "FLASH", "RAM")):
regions[line.split()[0]] = line.split("=")[-1]
for region in regions:
space = regions[region]
if "/*" in space:
space = space.split("/*")[0]
space = K_PATTERN.sub(K_REPLACE, space)
space = M_PATTERN.sub(M_REPLACE, space)
regions[region] = int(eval(space))
# TODO Remove check for both FLASH_FIRMWARE and FLASH after all ports are converted to use FLASH_FIRMWARE.
try:
firmware_region = regions["FLASH_FIRMWARE"]
except KeyError:
firmware_region = regions["FLASH"]
ram_region = regions["RAM"]
free_flash = firmware_region - text - data
free_ram = ram_region - data - bss
print("{} bytes free in flash firmware space out of {} bytes ({}kB).".format(free_flash, firmware_region, firmware_region / 1024))
print("{} bytes free in ram for stack and heap out of {} bytes ({}kB).".format(free_ram, ram_region, ram_region / 1024))
print()
# Check that we have free flash space. GCC doesn't fail when the text + data
# sections don't fit in FLASH. It only counts data in RAM.
if free_flash < 0:
print("Too little flash!!!")
print()
sys.exit(-1)