b001c0711b
1. Make _extext and _sidata coincide. Old _etext location did not include .ARM.exidx sections, which were usually absent but not always. So flash data was copied to RAM in wrong place. 2. Use decimal constants with "K" and "M" suffixes in .ld files instead of hex constants, to make them easier to read and check for accuracy.
76 lines
2.6 KiB
Python
76 lines
2.6 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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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", "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] = eval(space)
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free_flash = regions["FLASH"] - text - data
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free_ram = regions["RAM"] - data - bss
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print(free_flash, "bytes free in flash out of", regions["FLASH"], "bytes (", regions["FLASH"] / 1024, "kb ).")
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print(free_ram, "bytes free in ram for stack out of", regions["RAM"], "bytes (", regions["RAM"] / 1024, "kb ).")
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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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