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# arm64 lld 52/ __AArch64ADRPThunk_/d 53 54# arm lld 55/ __ARMV5PILongThunk_/d 56/ __ARMV7PILongThunk_/d 57/ __ThumbV7PILongThunk_/d 58 59# mips lld 60/ __LA25Thunk_/d 61/ __microLA25Thunk_/d 62 63# CFI type identifiers 64/ __kcfi_typeid_/d 65/ __kvm_nvhe___kcfi_typeid_/d 66/ __pi___kcfi_typeid_/d 67 68# CRC from modversions 69/ __crc_/d 70 71# EXPORT_SYMBOL (symbol name) 72/ __kstrtab_/d 73 74# EXPORT_SYMBOL (namespace) 75/ __kstrtabns_/d 76 77# --------------------------------------------------------------------------- 78# Ignored suffixes 79# (do not forget '$' after each pattern) 80 81# arm 82/_from_arm$/d 83/_from_thumb$/d 84/_veneer$/d 85 86# --------------------------------------------------------------------------- 87# Ignored symbols (exact match) 88# (do not forget a space before and '$' after each pattern) 89 90# for LoongArch? 91/ L0$/d 92 93# ppc 94/ _SDA_BASE_$/d 95/ _SDA2_BASE_$/d 96 97# --------------------------------------------------------------------------- 98# Ignored patterns 99# (symbols that contain the pattern are ignored) 100 101# ppc stub 102/\.long_branch\./d 103/\.plt_branch\./d 104 105# --------------------------------------------------------------------------- 106# Ignored kallsyms symbols 107# 108# If the 3rd parameter exists, symbols from it will be omitted from the output. 109# This makes kallsyms have the identical symbol lists in the step 1 and 2. 110# Without this, the step2 would get new symbols generated by scripts/kallsyms.c 111# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass. 112$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi) 113" 114