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320e7c9d44
scripts/kallsyms.c maintains compiler-generated symbols, but we end up with something similar in scripts/mksysmap to avoid the "Inconsistent kallsyms data" error. For example, commitc17a253870("mksysmap: Fix the mismatch of 'L0' symbols in System.map"). They were separately maintained prior to commit94ff2f63d6("kbuild: reuse mksysmap output for kallsyms"). Now that scripts/kallsyms.c parses the output of scripts/mksysmap, it makes more sense to collect all the ignored patterns to mksysmap. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
107 lines
2.6 KiB
Bash
Executable file
107 lines
2.6 KiB
Bash
Executable file
#!/bin/sh -x
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# Based on the vmlinux file create the System.map file
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# System.map is used by module-init tools and some debugging
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# tools to retrieve the actual addresses of symbols in the kernel.
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#
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# Usage
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# mksysmap vmlinux System.map [exclude]
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#####
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# Generate System.map (actual filename passed as second argument)
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# The following refers to the symbol type as per nm(1).
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# readprofile starts reading symbols when _stext is found, and
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# continue until it finds a symbol which is not either of 'T', 't',
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# 'W' or 'w'.
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#
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${NM} -n ${1} | sed >${2} -e "
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# ---------------------------------------------------------------------------
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# Ignored symbol types
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#
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# a: local absolute symbols
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# N: debugging symbols
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# U: undefined global symbols
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# w: local weak symbols
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/ [aNUw] /d
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# ---------------------------------------------------------------------------
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# Ignored prefixes
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# (do not forget a space before each pattern)
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# local symbols for ARM, MIPS, etc.
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/ \$/d
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# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
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/ \.L/d
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# arm64 EFI stub namespace
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/ __efistub_/d
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# arm64 local symbols in non-VHE KVM namespace
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/ __kvm_nvhe_\$/d
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/ __kvm_nvhe_\.L/d
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# arm64 lld
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/ __AArch64ADRPThunk_/d
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# arm lld
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/ __ARMV5PILongThunk_/d
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/ __ARMV7PILongThunk_/d
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/ __ThumbV7PILongThunk_/d
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# mips lld
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/ __LA25Thunk_/d
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/ __microLA25Thunk_/d
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# CFI type identifiers
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/ __kcfi_typeid_/d
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# CRC from modversions
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/ __crc_/d
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# EXPORT_SYMBOL (symbol name)
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/ __kstrtab_/d
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# EXPORT_SYMBOL (namespace)
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/ __kstrtabns_/d
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# ---------------------------------------------------------------------------
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# Ignored suffixes
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# (do not forget '$' after each pattern)
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# arm
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/_from_arm$/d
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/_from_thumb$/d
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/_veneer$/d
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# ---------------------------------------------------------------------------
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# Ignored symbols (exact match)
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# (do not forget a space before and '$' after each pattern)
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# for LoongArch?
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/ L0$/d
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# ppc
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/ _SDA_BASE_$/d
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/ _SDA2_BASE_$/d
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# ---------------------------------------------------------------------------
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# Ignored patterns
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# (symbols that contain the pattern are ignored)
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# ppc stub
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/\.long_branch\./d
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/\.plt_branch\./d
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# ---------------------------------------------------------------------------
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# Ignored kallsyms symbols
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#
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# If the 3rd parameter exists, symbols from it will be omitted from the output.
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# This makes kallsyms have the identical symbol lists in the step 1 and 2.
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# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
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# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
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$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
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"
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