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