#!/bin/sed -f # SPDX-License-Identifier: GPL-2.0-only # # sed script to filter out symbols that are not needed for System.map, # or not suitable for kallsyms. The input should be 'nm -n <file>'. # # System.map is used by module-init tools and some debugging # tools to retrieve the actual addresses of symbols in the kernel. # # 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'. # # --------------------------------------------------------------------------- # 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
# 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
# MODULE_INFO()
/ __UNIQUE_ID_modinfo[0-9]*$/d
# --------------------------------------------------------------------------- # Ignored patterns # (symbols that contain the pattern are ignored)
# ppc stub
/\.long_branch\./d
/\.plt_branch\./d
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