diff options
Diffstat (limited to 'scripts/mksysmap')
-rwxr-xr-x | scripts/mksysmap | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap new file mode 100755 index 0000000000..9ba1c9da0a --- /dev/null +++ b/scripts/mksysmap @@ -0,0 +1,113 @@ +#!/bin/sh -x +# Based on the vmlinux file create the System.map 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 +# + +# a: local absolute symbols +# N: debugging symbols +# U: undefined global symbols +# w: local weak symbols +/ [aNUw] /d + +# --------------------------------------------------------------------------- +# Ignored prefixes +# (do not forget a space before each pattern) + +# local symbols for ARM, MIPS, etc. +/ \\$/d + +# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc. +/ \.L/d + +# arm64 EFI stub namespace +/ __efistub_/d + +# arm64 local symbols in PIE namespace +/ __pi_\\$/d +/ __pi_\.L/d + +# arm64 local symbols in non-VHE KVM namespace +/ __kvm_nvhe_\\$/d +/ __kvm_nvhe_\.L/d + +# arm64 lld +/ __AArch64ADRPThunk_/d + +# arm lld +/ __ARMV5PILongThunk_/d +/ __ARMV7PILongThunk_/d +/ __ThumbV7PILongThunk_/d + +# mips lld +/ __LA25Thunk_/d +/ __microLA25Thunk_/d + +# CFI type identifiers +/ __kcfi_typeid_/d +/ __kvm_nvhe___kcfi_typeid_/d +/ __pi___kcfi_typeid_/d + +# CRC from modversions +/ __crc_/d + +# EXPORT_SYMBOL (symbol name) +/ __kstrtab_/d + +# EXPORT_SYMBOL (namespace) +/ __kstrtabns_/d + +# --------------------------------------------------------------------------- +# Ignored suffixes +# (do not forget '$' after each pattern) + +# arm +/_from_arm$/d +/_from_thumb$/d +/_veneer$/d + +# --------------------------------------------------------------------------- +# Ignored symbols (exact match) +# (do not forget a space before and '$' after each pattern) + +# for LoongArch? +/ L0$/d + +# ppc +/ _SDA_BASE_$/d +/ _SDA2_BASE_$/d + +# --------------------------------------------------------------------------- +# Ignored patterns +# (symbols that contain the pattern are ignored) + +# 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) +" |