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-rwxr-xr-xscripts/mksysmap28
1 files changed, 6 insertions, 22 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap
index 57ff5656d5..c12723a046 100755
--- a/scripts/mksysmap
+++ b/scripts/mksysmap
@@ -1,22 +1,16 @@
-#!/bin/sh -x
-# Based on the vmlinux file create the System.map file
+#!/bin/sed -f
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# sed script to filter out symbols that are not needed for System.map,
+# or not suitable for kallsyms. The input should be 'nm -n <file>'.
+#
# System.map is used by module-init tools and some debugging
# tools to retrieve the actual addresses of symbols in the kernel.
#
-# Usage
-# mksysmap vmlinux System.map [exclude]
-
-
-#####
-# Generate System.map (actual filename passed as second argument)
-# The following refers to the symbol type as per nm(1).
-
# readprofile starts reading symbols when _stext is found, and
# continue until it finds a symbol which is not either of 'T', 't',
# 'W' or 'w'.
#
-
-${NM} -n ${1} | sed >${2} -e "
# ---------------------------------------------------------------------------
# Ignored symbol types
#
@@ -92,13 +86,3 @@ ${NM} -n ${1} | sed >${2} -e "
# ppc stub
/\.long_branch\./d
/\.plt_branch\./d
-
-# ---------------------------------------------------------------------------
-# Ignored kallsyms symbols
-#
-# If the 3rd parameter exists, symbols from it will be omitted from the output.
-# This makes kallsyms have the identical symbol lists in the step 1 and 2.
-# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
-# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
-$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
-"