a951884d82
lld is now able to build ARMv4 and ARMv4T kernels, which means it can generate thunks for those (__ARMv4PILongThunk_*, __ARMv4PILongBXThunk_*) that can interfere with kallsyms table generation since they do not get ignore like the corresponding ARMv5+ ones are: Inconsistent kallsyms data Try "make KALLSYMS_EXTRA_PASS=1" as a workaround Replace the hardcoded list of thunk symbols with a more general regex that covers this one along with future symbols that follow the same pattern. Fixes:5eb6e28043("ARM: 9289/1: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer") Fixes:efe6e30680("kallsyms: fix nonconverging kallsyms table with lld") Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
105 lines
2.6 KiB
Bash
Executable File
105 lines
2.6 KiB
Bash
Executable File
#!/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
|
|
|
|
# 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
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# 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)
|
|
"
|