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#!/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
# lld arm/aarch64/mips thunks
/ __[[:alnum:]]*Thunk_/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
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