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# arm64 EFI stub namespace 41/ __efistub_/d 42 43# arm64 local symbols in PIE namespace 44/ __pi_\\$/d 45/ __pi_\.L/d 46 47# arm64 local symbols in non-VHE KVM namespace 48/ __kvm_nvhe_\\$/d 49/ __kvm_nvhe_\.L/d 50 51# lld arm/aarch64/mips thunks 52/ __[[:alnum:]]*Thunk_/d 53 54# CFI type identifiers 55/ __kcfi_typeid_/d 56/ __kvm_nvhe___kcfi_typeid_/d 57/ __pi___kcfi_typeid_/d 58 59# CRC from modversions 60/ __crc_/d 61 62# EXPORT_SYMBOL (symbol name) 63/ __kstrtab_/d 64 65# EXPORT_SYMBOL (namespace) 66/ __kstrtabns_/d 67 68# --------------------------------------------------------------------------- 69# Ignored suffixes 70# (do not forget '$' after each pattern) 71 72# arm 73/_from_arm$/d 74/_from_thumb$/d 75/_veneer$/d 76 77# --------------------------------------------------------------------------- 78# Ignored symbols (exact match) 79# (do not forget a space before and '$' after each pattern) 80 81# for LoongArch? 82/ L0$/d 83 84# ppc 85/ _SDA_BASE_$/d 86/ _SDA2_BASE_$/d 87 88# --------------------------------------------------------------------------- 89# Ignored patterns 90# (symbols that contain the pattern are ignored) 91 92# ppc stub 93/\.long_branch\./d 94/\.plt_branch\./d 95 96# --------------------------------------------------------------------------- 97# Ignored kallsyms symbols 98# 99# If the 3rd parameter exists, symbols from it will be omitted from the output. 100# This makes kallsyms have the identical symbol lists in the step 1 and 2. 101# Without this, the step2 would get new symbols generated by scripts/kallsyms.c 102# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass. 103$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi) 104" 105