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 non-VHE KVM namespace 44/ __kvm_nvhe_\$/d 45/ __kvm_nvhe_\.L/d 46 47# arm64 lld 48/ __AArch64ADRPThunk_/d 49 50# arm lld 51/ __ARMV5PILongThunk_/d 52/ __ARMV7PILongThunk_/d 53/ __ThumbV7PILongThunk_/d 54 55# mips lld 56/ __LA25Thunk_/d 57/ __microLA25Thunk_/d 58 59# CFI type identifiers 60/ __kcfi_typeid_/d 61 62# CRC from modversions 63/ __crc_/d 64 65# EXPORT_SYMBOL (symbol name) 66/ __kstrtab_/d 67 68# EXPORT_SYMBOL (namespace) 69/ __kstrtabns_/d 70 71# --------------------------------------------------------------------------- 72# Ignored suffixes 73# (do not forget '$' after each pattern) 74 75# arm 76/_from_arm$/d 77/_from_thumb$/d 78/_veneer$/d 79 80# --------------------------------------------------------------------------- 81# Ignored symbols (exact match) 82# (do not forget a space before and '$' after each pattern) 83 84# for LoongArch? 85/ L0$/d 86 87# ppc 88/ _SDA_BASE_$/d 89/ _SDA2_BASE_$/d 90 91# --------------------------------------------------------------------------- 92# Ignored patterns 93# (symbols that contain the pattern are ignored) 94 95# ppc stub 96/\.long_branch\./d 97/\.plt_branch\./d 98 99# --------------------------------------------------------------------------- 100# Ignored kallsyms symbols 101# 102# If the 3rd parameter exists, symbols from it will be omitted from the output. 103# This makes kallsyms have the identical symbol lists in the step 1 and 2. 104# Without this, the step2 would get new symbols generated by scripts/kallsyms.c 105# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass. 106$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi) 107" 108