9c7fbc3f9b
Introduce a FreeBSDKernel plugin that provides the ability to read FreeBSD kernel core dumps. The plugin utilizes libfbsdvmcore to provide support for both "full memory dump" and minidump formats across variety of architectures supported by FreeBSD. It provides the ability to read kernel memory, as well as the crashed thread status with registers on arm64, i386 and x86_64. Differential Revision: https://reviews.llvm.org/D114911
35 lines
851 B
Python
35 lines
851 B
Python
#!/usr/bin/env python
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import argparse
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import re
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import sys
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def main():
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argp = argparse.ArgumentParser()
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argp.add_argument('infile', type=argparse.FileType('rb'),
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help='Input vmcore file')
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argp.add_argument('outfile', type=argparse.FileType('wb'),
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help='Output vmcore file')
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args = argp.parse_args()
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inf = args.infile
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outf = args.outfile
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line_re = re.compile(r"^% RD: (\d+) (\d+)")
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# copy the first chunk that usually includes ELF headers
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# (not output by patched libfbsdvmcore since libelf reads this)
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outf.write(inf.read(1024))
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for l in sys.stdin:
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m = line_re.match(l)
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offset, size = [int(x) for x in m.groups()]
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inf.seek(offset)
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outf.seek(offset)
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outf.write(inf.read(size))
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if __name__ == "__main__":
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main()
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