diff options
Diffstat (limited to 'scripts/mksysmap')
-rwxr-xr-x | scripts/mksysmap | 32 |
1 files changed, 8 insertions, 24 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap index 57ff5656d566..3accbdb269ac 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 # @@ -32,7 +26,7 @@ ${NM} -n ${1} | sed >${2} -e " # (do not forget a space before each pattern) # local symbols for ARM, MIPS, etc. -/ \\$/d +/ \$/d # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc. / \.L/d @@ -45,7 +39,7 @@ ${NM} -n ${1} | sed >${2} -e " / __pi_\.L/d # arm64 local symbols in non-VHE KVM namespace -/ __kvm_nvhe_\\$/d +/ __kvm_nvhe_\$/d / __kvm_nvhe_\.L/d # lld arm/aarch64/mips thunks @@ -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) -" |