# tools to retrieve the actual addresses of symbols in the kernel.
#
# Usage
-# mksysmap vmlinux System.map
+# mksysmap vmlinux System.map [exclude]
#####
# Generate System.map (actual filename passed as second argument)
-
-# $NM produces the following output:
-# f0081e80 T alloc_vfsmnt
-
-# The second row specify the type of the symbol:
-# A = Absolute
-# B = Uninitialised data (.bss)
-# C = Common symbol
-# D = Initialised data
-# G = Initialised data for small objects
-# I = Indirect reference to another symbol
-# N = Debugging symbol
-# R = Read only
-# S = Uninitialised data for small objects
-# T = Text code symbol
-# U = Undefined symbol
-# V = Weak symbol
-# W = Weak symbol
-# Corresponding small letters are local symbols
-
-# For System.map filter away:
-# a - local absolute symbols
-# U - undefined global symbols
-# N - debugging symbols
-# w - local weak symbols
+# 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'.
#
-# Ignored prefixes:
-# $ - local symbols for ARM, MIPS, etc.
-# .L - local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc.
-# __crc_ - modversions
-# __kstrtab_ - EXPORT_SYMBOL (symbol name)
-# __kstrtabns_ - EXPORT_SYMBOL (namespace)
+
+${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 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
+
+# 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
#
-# Ignored symbols:
-# L0 - for LoongArch?
-
-$NM -n $1 | grep -v \
- -e ' [aNUw] ' \
- -e ' \$' \
- -e ' \.L' \
- -e ' __crc_' \
- -e ' __kstrtab_' \
- -e ' __kstrtabns_' \
- -e ' L0$' \
-> $2
+# If the 3rd parameter exists, symbols from it will be omitted from the output.
+# This makes kallsyms have the identical symbol lists in the step 1 and 2.
+# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
+# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
+$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
+"
projects / platform / kernel / linux-starfive.git / blobdiff