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60 lines
1.5 KiB
60 lines
1.5 KiB
#!/bin/sh |
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# SPDX-License-Identifier: GPL-2.0-only |
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# Create an autoksyms.h header file from the list of all module's needed symbols |
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# as recorded on the second line of *.mod files and the user-provided symbol |
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# whitelist. |
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set -e |
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output_file="$1" |
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# Use "make V=1" to debug this script. |
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case "$KBUILD_VERBOSE" in |
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*1*) |
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set -x |
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;; |
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esac |
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# We need access to CONFIG_ symbols |
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. include/config/auto.conf |
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needed_symbols= |
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# Special case for modversions (see modpost.c) |
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if [ -n "$CONFIG_MODVERSIONS" ]; then |
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needed_symbols="$needed_symbols module_layout" |
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fi |
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ksym_wl= |
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if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then |
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# Use 'eval' to expand the whitelist path and check if it is relative |
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eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST" |
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[ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl" |
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if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then |
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echo "ERROR: '$ksym_wl' whitelist file not found" >&2 |
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exit 1 |
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fi |
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fi |
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# Generate a new ksym list file with symbols needed by the current |
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# set of modules. |
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cat > "$output_file" << EOT |
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/* |
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* Automatically generated file; DO NOT EDIT. |
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*/ |
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EOT |
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[ -f modules.order ] && modlist=modules.order || modlist=/dev/null |
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{ |
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sed 's/ko$/mod/' $modlist | xargs -n1 sed -n -e '2p' |
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echo "$needed_symbols" |
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[ -n "$ksym_wl" ] && cat "$ksym_wl" |
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} | sed -e 's/ /\n/g' | sed -n -e '/^$/!p' | |
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# Remove the dot prefix for ppc64; symbol names with a dot (.) hold entry |
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# point addresses. |
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sed -e 's/^\.//' | |
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sort -u | |
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sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
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