Commit | Line | Data |
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cd195bc4 QP |
1 | #!/bin/sh |
2 | # SPDX-License-Identifier: GPL-2.0-only | |
3 | ||
4 | # Create an autoksyms.h header file from the list of all module's needed symbols | |
5 | # as recorded on the second line of *.mod files and the user-provided symbol | |
6 | # whitelist. | |
7 | ||
8 | set -e | |
9 | ||
10 | output_file="$1" | |
11 | ||
12 | # Use "make V=1" to debug this script. | |
13 | case "$KBUILD_VERBOSE" in | |
14 | *1*) | |
15 | set -x | |
16 | ;; | |
17 | esac | |
18 | ||
19 | # We need access to CONFIG_ symbols | |
20 | . include/config/auto.conf | |
21 | ||
a6aaeb84 MY |
22 | needed_symbols= |
23 | ||
24 | # Special case for modversions (see modpost.c) | |
25 | if [ -n "$CONFIG_MODVERSIONS" ]; then | |
26 | needed_symbols="$needed_symbols module_layout" | |
27 | fi | |
28 | ||
a6aaeb84 | 29 | ksym_wl= |
cd195bc4 QP |
30 | if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then |
31 | # Use 'eval' to expand the whitelist path and check if it is relative | |
32 | eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST" | |
33 | [ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl" | |
34 | if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then | |
35 | echo "ERROR: '$ksym_wl' whitelist file not found" >&2 | |
36 | exit 1 | |
37 | fi | |
38 | fi | |
39 | ||
40 | # Generate a new ksym list file with symbols needed by the current | |
41 | # set of modules. | |
42 | cat > "$output_file" << EOT | |
43 | /* | |
44 | * Automatically generated file; DO NOT EDIT. | |
45 | */ | |
46 | ||
47 | EOT | |
48 | ||
88694cff | 49 | [ -f modules.order ] && modlist=modules.order || modlist=/dev/null |
a6aaeb84 MY |
50 | |
51 | { | |
52 | sed 's/ko$/mod/' $modlist | xargs -n1 sed -n -e '2p' | |
53 | echo "$needed_symbols" | |
54 | [ -n "$ksym_wl" ] && cat "$ksym_wl" | |
55 | } | sed -e 's/ /\n/g' | sed -n -e '/^$/!p' | | |
29500f15 MY |
56 | # Remove the dot prefix for ppc64; symbol names with a dot (.) hold entry |
57 | # point addresses. | |
58 | sed -e 's/^\.//' | | |
cd195bc4 QP |
59 | sort -u | |
60 | sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file" |