| 1 | #!/bin/sed -f |
| 2 | # SPDX-License-Identifier: GPL-2.0-only |
| 3 | # |
| 4 | # sed script to filter out symbols that are not needed for System.map, |
| 5 | # or not suitable for kallsyms. The input should be 'nm -n <file>'. |
| 6 | # |
| 7 | # System.map is used by module-init tools and some debugging |
| 8 | # tools to retrieve the actual addresses of symbols in the kernel. |
| 9 | # |
| 10 | # readprofile starts reading symbols when _stext is found, and |
| 11 | # continue until it finds a symbol which is not either of 'T', 't', |
| 12 | # 'W' or 'w'. |
| 13 | # |
| 14 | # --------------------------------------------------------------------------- |
| 15 | # Ignored symbol types |
| 16 | # |
| 17 | |
| 18 | # a: local absolute symbols |
| 19 | # N: debugging symbols |
| 20 | # U: undefined global symbols |
| 21 | # w: local weak symbols |
| 22 | / [aNUw] /d |
| 23 | |
| 24 | # --------------------------------------------------------------------------- |
| 25 | # Ignored prefixes |
| 26 | # (do not forget a space before each pattern) |
| 27 | |
| 28 | # local symbols for ARM, MIPS, etc. |
| 29 | / \$/d |
| 30 | |
| 31 | # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc. |
| 32 | / \.L/d |
| 33 | |
| 34 | # arm64 EFI stub namespace |
| 35 | / __efistub_/d |
| 36 | |
| 37 | # arm64 local symbols in PIE namespace |
| 38 | / __pi_\\$/d |
| 39 | / __pi_\.L/d |
| 40 | |
| 41 | # arm64 local symbols in non-VHE KVM namespace |
| 42 | / __kvm_nvhe_\$/d |
| 43 | / __kvm_nvhe_\.L/d |
| 44 | |
| 45 | # lld arm/aarch64/mips thunks |
| 46 | / __[[:alnum:]]*Thunk_/d |
| 47 | |
| 48 | # CFI type identifiers |
| 49 | / __kcfi_typeid_/d |
| 50 | / __kvm_nvhe___kcfi_typeid_/d |
| 51 | / __pi___kcfi_typeid_/d |
| 52 | |
| 53 | # CRC from modversions |
| 54 | / __crc_/d |
| 55 | |
| 56 | # EXPORT_SYMBOL (symbol name) |
| 57 | / __kstrtab_/d |
| 58 | |
| 59 | # EXPORT_SYMBOL (namespace) |
| 60 | / __kstrtabns_/d |
| 61 | |
| 62 | # MODULE_DEVICE_TABLE (symbol name) |
| 63 | / __mod_device_table__/d |
| 64 | |
| 65 | # --------------------------------------------------------------------------- |
| 66 | # Ignored suffixes |
| 67 | # (do not forget '$' after each pattern) |
| 68 | |
| 69 | # arm |
| 70 | /_from_arm$/d |
| 71 | /_from_thumb$/d |
| 72 | /_veneer$/d |
| 73 | |
| 74 | # --------------------------------------------------------------------------- |
| 75 | # Ignored symbols (exact match) |
| 76 | # (do not forget a space before and '$' after each pattern) |
| 77 | |
| 78 | # for LoongArch? |
| 79 | / L0$/d |
| 80 | |
| 81 | # ppc |
| 82 | / _SDA_BASE_$/d |
| 83 | / _SDA2_BASE_$/d |
| 84 | |
| 85 | # MODULE_INFO() |
| 86 | / __UNIQUE_ID_modinfo[0-9]*$/d |
| 87 | |
| 88 | # --------------------------------------------------------------------------- |
| 89 | # Ignored patterns |
| 90 | # (symbols that contain the pattern are ignored) |
| 91 | |
| 92 | # ppc stub |
| 93 | /\.long_branch\./d |
| 94 | /\.plt_branch\./d |