72 lines
2.0 KiB
Python
Executable File
72 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# SPDX-FileCopyrightText: Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
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# SPDX-FileCopyrightText: 2014 MicroPython & CircuitPython contributors (https://github.com/adafruit/circuitpython/graphs/contributors)
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#
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# SPDX-License-Identifier: MIT
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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]+)[kK]")
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K_REPLACE = r"(\1*1024)"
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M_PATTERN = re.compile(r"([0-9]+)[mM]")
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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", "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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firmware_region = regions["FLASH_FIRMWARE"]
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ram_region = regions["RAM"]
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used_flash = data + text
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free_flash = firmware_region - used_flash
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used_ram = data + bss
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free_ram = ram_region - used_ram
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print(
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"{} bytes used, {} bytes free in flash firmware space out of {} bytes ({}kB).".format(
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used_flash, free_flash, firmware_region, firmware_region / 1024
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)
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)
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print(
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"{} bytes used, {} bytes free in ram for stack and heap out of {} bytes ({}kB).".format(
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used_ram, free_ram, ram_region, ram_region / 1024
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)
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)
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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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