1 #!/bin/sed -f !! 1 #!/bin/sh -x
2 # SPDX-License-Identifier: GPL-2.0-only !! 2 # Based on the vmlinux file create the System.map file
3 # <<
4 # sed script to filter out symbols that are no <<
5 # or not suitable for kallsyms. The input shou <<
6 # <<
7 # System.map is used by module-init tools and 3 # System.map is used by module-init tools and some debugging
8 # tools to retrieve the actual addresses of sy 4 # tools to retrieve the actual addresses of symbols in the kernel.
9 # 5 #
>> 6 # Usage
>> 7 # mksysmap vmlinux System.map [exclude]
>> 8
>> 9
>> 10 #####
>> 11 # Generate System.map (actual filename passed as second argument)
>> 12 # The following refers to the symbol type as per nm(1).
>> 13
10 # readprofile starts reading symbols when _ste 14 # readprofile starts reading symbols when _stext is found, and
11 # continue until it finds a symbol which is no 15 # continue until it finds a symbol which is not either of 'T', 't',
12 # 'W' or 'w'. 16 # 'W' or 'w'.
13 # 17 #
>> 18
>> 19 ${NM} -n ${1} | sed >${2} -e "
14 # -------------------------------------------- 20 # ---------------------------------------------------------------------------
15 # Ignored symbol types 21 # Ignored symbol types
16 # 22 #
17 23
18 # a: local absolute symbols 24 # a: local absolute symbols
19 # N: debugging symbols 25 # N: debugging symbols
20 # U: undefined global symbols 26 # U: undefined global symbols
21 # w: local weak symbols 27 # w: local weak symbols
22 / [aNUw] /d 28 / [aNUw] /d
23 29
24 # -------------------------------------------- 30 # ---------------------------------------------------------------------------
25 # Ignored prefixes 31 # Ignored prefixes
26 # (do not forget a space before each pattern) 32 # (do not forget a space before each pattern)
27 33
28 # local symbols for ARM, MIPS, etc. 34 # local symbols for ARM, MIPS, etc.
29 / \\$/d 35 / \\$/d
30 36
31 # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx 37 # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
32 / \.L/d 38 / \.L/d
33 39
34 # arm64 EFI stub namespace 40 # arm64 EFI stub namespace
35 / __efistub_/d 41 / __efistub_/d
36 42
37 # arm64 local symbols in PIE namespace 43 # arm64 local symbols in PIE namespace
38 / __pi_\\$/d 44 / __pi_\\$/d
39 / __pi_\.L/d 45 / __pi_\.L/d
40 46
41 # arm64 local symbols in non-VHE KVM namespace 47 # arm64 local symbols in non-VHE KVM namespace
42 / __kvm_nvhe_\\$/d 48 / __kvm_nvhe_\\$/d
43 / __kvm_nvhe_\.L/d 49 / __kvm_nvhe_\.L/d
44 50
45 # lld arm/aarch64/mips thunks 51 # lld arm/aarch64/mips thunks
46 / __[[:alnum:]]*Thunk_/d 52 / __[[:alnum:]]*Thunk_/d
47 53
48 # CFI type identifiers 54 # CFI type identifiers
49 / __kcfi_typeid_/d 55 / __kcfi_typeid_/d
50 / __kvm_nvhe___kcfi_typeid_/d 56 / __kvm_nvhe___kcfi_typeid_/d
51 / __pi___kcfi_typeid_/d 57 / __pi___kcfi_typeid_/d
52 58
53 # CRC from modversions 59 # CRC from modversions
54 / __crc_/d 60 / __crc_/d
55 61
56 # EXPORT_SYMBOL (symbol name) 62 # EXPORT_SYMBOL (symbol name)
57 / __kstrtab_/d 63 / __kstrtab_/d
58 64
59 # EXPORT_SYMBOL (namespace) 65 # EXPORT_SYMBOL (namespace)
60 / __kstrtabns_/d 66 / __kstrtabns_/d
61 67
62 # -------------------------------------------- 68 # ---------------------------------------------------------------------------
63 # Ignored suffixes 69 # Ignored suffixes
64 # (do not forget '$' after each pattern) 70 # (do not forget '$' after each pattern)
65 71
66 # arm 72 # arm
67 /_from_arm$/d 73 /_from_arm$/d
68 /_from_thumb$/d 74 /_from_thumb$/d
69 /_veneer$/d 75 /_veneer$/d
70 76
71 # -------------------------------------------- 77 # ---------------------------------------------------------------------------
72 # Ignored symbols (exact match) 78 # Ignored symbols (exact match)
73 # (do not forget a space before and '$' after 79 # (do not forget a space before and '$' after each pattern)
74 80
75 # for LoongArch? 81 # for LoongArch?
76 / L0$/d 82 / L0$/d
77 83
78 # ppc 84 # ppc
79 / _SDA_BASE_$/d 85 / _SDA_BASE_$/d
80 / _SDA2_BASE_$/d 86 / _SDA2_BASE_$/d
81 87
82 # -------------------------------------------- 88 # ---------------------------------------------------------------------------
83 # Ignored patterns 89 # Ignored patterns
84 # (symbols that contain the pattern are ignor 90 # (symbols that contain the pattern are ignored)
85 91
86 # ppc stub 92 # ppc stub
87 /\.long_branch\./d 93 /\.long_branch\./d
88 /\.plt_branch\./d 94 /\.plt_branch\./d
>> 95
>> 96 # ---------------------------------------------------------------------------
>> 97 # Ignored kallsyms symbols
>> 98 #
>> 99 # If the 3rd parameter exists, symbols from it will be omitted from the output.
>> 100 # This makes kallsyms have the identical symbol lists in the step 1 and 2.
>> 101 # Without this, the step2 would get new symbols generated by scripts/kallsyms.c
>> 102 # when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
>> 103 $(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
>> 104 "
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.