33 lines
1.0 KiB
Bash
33 lines
1.0 KiB
Bash
#! /bin/bash
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# A lot of symbols are exported by the main kernel image. Find out
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# more precisely which built-in.o file defines them, and fill in
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# that information in Module.symvers. (The built-in.o files are
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# linked together from one or more object files in a directory.)
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# We use this information to better group symbols by subsystems.
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#
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# Usage: built-in-where < Module.symvers
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unset LANG ${!LC_*}
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# Create a table of all symbol export in a built-in.o file, e.g.,
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# mtrr_add arch/i386/kernel/cpu/mtrr/built-in
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built_in_exports() {
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for obj in $(find -name built-in.o -printf '%P\n'); do
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nm $obj \
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| sed -nre 's:(00000000)?([0-9a-f]+) A __crc_(.*):\3\t'"${obj%.o}:p"
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done
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}
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# Join together the two tables, including all lines from the first
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# file that don't have a match in the second. Finally remove the
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# duplicate column.
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join -t $'\t' -1 2 -2 1 -a 1 \
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<(cut -f1,2,3 | sort -k2) \
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<(built_in_exports | sort -k1) \
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| awk '
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BEGIN { FS = "\t" ; OFS = "\t" }
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NF == 3 { print $2, $1, $3 }
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NF == 4 { print $2, $1, $4 }
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'
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