1 #!/bin/sed -f 1 #!/bin/sed -f
2 # SPDX-License-Identifier: GPL-2.0-only 2 # SPDX-License-Identifier: GPL-2.0-only
3 # 3 #
4 # sed script to filter out symbols that are no 4 # sed script to filter out symbols that are not needed for System.map,
5 # or not suitable for kallsyms. The input shou 5 # or not suitable for kallsyms. The input should be 'nm -n <file>'.
6 # 6 #
7 # System.map is used by module-init tools and 7 # System.map is used by module-init tools and some debugging
8 # tools to retrieve the actual addresses of sy 8 # tools to retrieve the actual addresses of symbols in the kernel.
9 # 9 #
10 # readprofile starts reading symbols when _ste 10 # readprofile starts reading symbols when _stext is found, and
11 # continue until it finds a symbol which is no 11 # continue until it finds a symbol which is not either of 'T', 't',
12 # 'W' or 'w'. 12 # 'W' or 'w'.
13 # 13 #
14 # -------------------------------------------- 14 # ---------------------------------------------------------------------------
15 # Ignored symbol types 15 # Ignored symbol types
16 # 16 #
17 17
18 # a: local absolute symbols 18 # a: local absolute symbols
19 # N: debugging symbols 19 # N: debugging symbols
20 # U: undefined global symbols 20 # U: undefined global symbols
21 # w: local weak symbols 21 # w: local weak symbols
22 / [aNUw] /d 22 / [aNUw] /d
23 23
24 # -------------------------------------------- 24 # ---------------------------------------------------------------------------
25 # Ignored prefixes 25 # Ignored prefixes
26 # (do not forget a space before each pattern) 26 # (do not forget a space before each pattern)
27 27
28 # local symbols for ARM, MIPS, etc. 28 # local symbols for ARM, MIPS, etc.
29 / \\$/d 29 / \\$/d
30 30
31 # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx 31 # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
32 / \.L/d 32 / \.L/d
33 33
34 # arm64 EFI stub namespace 34 # arm64 EFI stub namespace
35 / __efistub_/d 35 / __efistub_/d
36 36
37 # arm64 local symbols in PIE namespace 37 # arm64 local symbols in PIE namespace
38 / __pi_\\$/d 38 / __pi_\\$/d
39 / __pi_\.L/d 39 / __pi_\.L/d
40 40
41 # arm64 local symbols in non-VHE KVM namespace 41 # arm64 local symbols in non-VHE KVM namespace
42 / __kvm_nvhe_\\$/d 42 / __kvm_nvhe_\\$/d
43 / __kvm_nvhe_\.L/d 43 / __kvm_nvhe_\.L/d
44 44
45 # lld arm/aarch64/mips thunks 45 # lld arm/aarch64/mips thunks
46 / __[[:alnum:]]*Thunk_/d 46 / __[[:alnum:]]*Thunk_/d
47 47
48 # CFI type identifiers 48 # CFI type identifiers
49 / __kcfi_typeid_/d 49 / __kcfi_typeid_/d
50 / __kvm_nvhe___kcfi_typeid_/d 50 / __kvm_nvhe___kcfi_typeid_/d
51 / __pi___kcfi_typeid_/d 51 / __pi___kcfi_typeid_/d
52 52
53 # CRC from modversions 53 # CRC from modversions
54 / __crc_/d 54 / __crc_/d
55 55
56 # EXPORT_SYMBOL (symbol name) 56 # EXPORT_SYMBOL (symbol name)
57 / __kstrtab_/d 57 / __kstrtab_/d
58 58
59 # EXPORT_SYMBOL (namespace) 59 # EXPORT_SYMBOL (namespace)
60 / __kstrtabns_/d 60 / __kstrtabns_/d
61 61
62 # -------------------------------------------- 62 # ---------------------------------------------------------------------------
63 # Ignored suffixes 63 # Ignored suffixes
64 # (do not forget '$' after each pattern) 64 # (do not forget '$' after each pattern)
65 65
66 # arm 66 # arm
67 /_from_arm$/d 67 /_from_arm$/d
68 /_from_thumb$/d 68 /_from_thumb$/d
69 /_veneer$/d 69 /_veneer$/d
70 70
71 # -------------------------------------------- 71 # ---------------------------------------------------------------------------
72 # Ignored symbols (exact match) 72 # Ignored symbols (exact match)
73 # (do not forget a space before and '$' after 73 # (do not forget a space before and '$' after each pattern)
74 74
75 # for LoongArch? 75 # for LoongArch?
76 / L0$/d 76 / L0$/d
77 77
78 # ppc 78 # ppc
79 / _SDA_BASE_$/d 79 / _SDA_BASE_$/d
80 / _SDA2_BASE_$/d 80 / _SDA2_BASE_$/d
81 81
82 # -------------------------------------------- 82 # ---------------------------------------------------------------------------
83 # Ignored patterns 83 # Ignored patterns
84 # (symbols that contain the pattern are ignor 84 # (symbols that contain the pattern are ignored)
85 85
86 # ppc stub 86 # ppc stub
87 /\.long_branch\./d 87 /\.long_branch\./d
88 /\.plt_branch\./d 88 /\.plt_branch\./d
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