summaryrefslogtreecommitdiffstats
path: root/scripts/gen_autoksyms.sh
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /scripts/gen_autoksyms.sh
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/gen_autoksyms.sh')
-rwxr-xr-xscripts/gen_autoksyms.sh62
1 files changed, 62 insertions, 0 deletions
diff --git a/scripts/gen_autoksyms.sh b/scripts/gen_autoksyms.sh
new file mode 100755
index 000000000..653fadbad
--- /dev/null
+++ b/scripts/gen_autoksyms.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Create an autoksyms.h header file from the list of all module's needed symbols
+# as recorded in *.usyms files and the user-provided symbol whitelist.
+
+set -e
+
+# Use "make V=1" to debug this script.
+case "$KBUILD_VERBOSE" in
+*1*)
+ set -x
+ ;;
+esac
+
+read_modorder=
+
+if [ "$1" = --modorder ]; then
+ shift
+ read_modorder=1
+fi
+
+output_file="$1"
+
+needed_symbols=
+
+# Special case for modversions (see modpost.c)
+if grep -q "^CONFIG_MODVERSIONS=y$" include/config/auto.conf; then
+ needed_symbols="$needed_symbols module_layout"
+fi
+
+ksym_wl=$(sed -n 's/^CONFIG_UNUSED_KSYMS_WHITELIST=\(.*\)$/\1/p' include/config/auto.conf)
+if [ -n "$ksym_wl" ]; then
+ [ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl"
+ if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
+ echo "ERROR: '$ksym_wl' whitelist file not found" >&2
+ exit 1
+ fi
+fi
+
+# Generate a new ksym list file with symbols needed by the current
+# set of modules.
+cat > "$output_file" << EOT
+/*
+ * Automatically generated file; DO NOT EDIT.
+ */
+
+EOT
+
+{
+ [ -n "${read_modorder}" ] && sed 's/ko$/usyms/' modules.order | xargs cat
+ echo "$needed_symbols"
+ [ -n "$ksym_wl" ] && cat "$ksym_wl"
+} | sed -e 's/ /\n/g' | sed -n -e '/^$/!p' |
+# Remove the dot prefix for ppc64; symbol names with a dot (.) hold entry
+# point addresses.
+sed -e 's/^\.//' |
+sort -u |
+# Ignore __this_module. It's not an exported symbol, and will be resolved
+# when the final .ko's are linked.
+grep -v '^__this_module$' |
+sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"