1#!/bin/sh -x 2# Based on the vmlinux file create the System.map file 3# System.map is used by module-init tools and some debugging 4# tools to retrieve the actual addresses of symbols in the kernel. 5# 6# Usage 7# mksysmap vmlinux System.map [exclude] 8 9 10##### 11# Generate System.map (actual filename passed as second argument) 12# The following refers to the symbol type as per nm(1). 13 14# readprofile starts reading symbols when _stext is found, and 15# continue until it finds a symbol which is not either of 'T', 't', 16# 'W' or 'w'. 17# 18 19${NM} -n ${1} | sed >${2} -e " 20# --------------------------------------------------------------------------- 21# Ignored symbol types 22# 23 24# a: local absolute symbols 25# N: debugging symbols 26# U: undefined global symbols 27# w: local weak symbols 28/ [aNUw] /d 29 30# --------------------------------------------------------------------------- 31# Ignored prefixes 32# (do not forget a space before each pattern) 33 34# local symbols for ARM, MIPS, etc. 35/ \$/d 36 37# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc. 38/ \.L/d 39 40# CRC from modversions 41/ __crc_/d 42 43# EXPORT_SYMBOL (symbol name) 44/ __kstrtab_/d 45 46# EXPORT_SYMBOL (namespace) 47/ __kstrtabns_/d 48 49# --------------------------------------------------------------------------- 50# Ignored symbols (exact match) 51# (do not forget a space before and '$' after each pattern) 52 53# for LoongArch? 54/ L0$/d 55 56# --------------------------------------------------------------------------- 57# Ignored kallsyms symbols 58# 59# If the 3rd parameter exists, symbols from it will be omitted from the output. 60# This makes kallsyms have the identical symbol lists in the step 1 and 2. 61# Without this, the step2 would get new symbols generated by scripts/kallsyms.c 62# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass. 63$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi) 64" 65