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Linux/scripts/mksysmap

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Diff markup

Differences between /scripts/mksysmap (Version linux-6.12-rc7) and /scripts/mksysmap (Version linux-6.0.19)


  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 #
 10 # readprofile starts reading symbols when _ste !!   6 # Usage
 11 # continue until it finds a symbol which is no !!   7 # mksysmap vmlinux System.map
 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 << 
 32 / \.L/d                                        << 
 33                                                << 
 34 # arm64 EFI stub namespace                     << 
 35 / __efistub_/d                                 << 
 36                                                     8 
 37 # arm64 local symbols in PIE namespace         << 
 38 / __pi_\\$/d                                   << 
 39 / __pi_\.L/d                                   << 
 40                                                     9 
 41 # arm64 local symbols in non-VHE KVM namespace !!  10 #####
 42 / __kvm_nvhe_\\$/d                             !!  11 # Generate System.map (actual filename passed as second argument)
 43 / __kvm_nvhe_\.L/d                             << 
 44                                                    12 
 45 # lld arm/aarch64/mips thunks                  !!  13 # $NM produces the following output:
 46 / __[[:alnum:]]*Thunk_/d                       !!  14 # f0081e80 T alloc_vfsmnt
                                                   >>  15 
                                                   >>  16 #   The second row specify the type of the symbol:
                                                   >>  17 #   A = Absolute
                                                   >>  18 #   B = Uninitialised data (.bss)
                                                   >>  19 #   C = Common symbol
                                                   >>  20 #   D = Initialised data
                                                   >>  21 #   G = Initialised data for small objects
                                                   >>  22 #   I = Indirect reference to another symbol
                                                   >>  23 #   N = Debugging symbol
                                                   >>  24 #   R = Read only
                                                   >>  25 #   S = Uninitialised data for small objects
                                                   >>  26 #   T = Text code symbol
                                                   >>  27 #   U = Undefined symbol
                                                   >>  28 #   V = Weak symbol
                                                   >>  29 #   W = Weak symbol
                                                   >>  30 #   Corresponding small letters are local symbols
                                                   >>  31 
                                                   >>  32 # For System.map filter away:
                                                   >>  33 #   a - local absolute symbols
                                                   >>  34 #   U - undefined global symbols
                                                   >>  35 #   N - debugging symbols
                                                   >>  36 #   w - local weak symbols
 47                                                    37 
 48 # CFI type identifiers                         !!  38 # readprofile starts reading symbols when _stext is found, and
 49 / __kcfi_typeid_/d                             !!  39 # continue until it finds a symbol which is not either of 'T', 't',
 50 / __kvm_nvhe___kcfi_typeid_/d                  !!  40 # 'W' or 'w'. __crc_ are 'A' and placed in the middle
 51 / __pi___kcfi_typeid_/d                        !!  41 # so we just ignore them to let readprofile continue to work.
 52                                                !!  42 # (At least sparc64 has __crc_ in the middle).
 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 # -------------------------------------------- << 
 63 # Ignored suffixes                             << 
 64 #  (do not forget '$' after each pattern)      << 
 65                                                << 
 66 # arm                                          << 
 67 /_from_arm$/d                                  << 
 68 /_from_thumb$/d                                << 
 69 /_veneer$/d                                    << 
 70                                                << 
 71 # -------------------------------------------- << 
 72 # Ignored symbols (exact match)                << 
 73 #  (do not forget a space before and '$' after << 
 74                                                << 
 75 # for LoongArch?                               << 
 76 / L0$/d                                        << 
 77                                                << 
 78 # ppc                                          << 
 79 / _SDA_BASE_$/d                                << 
 80 / _SDA2_BASE_$/d                               << 
 81                                                << 
 82 # -------------------------------------------- << 
 83 # Ignored patterns                             << 
 84 #  (symbols that contain the pattern are ignor << 
 85                                                    43 
 86 # ppc stub                                     !!  44 $NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( \.L\)\|\( L0\)' > $2
 87 /\.long_branch\./d                             << 
 88 /\.plt_branch\./d                              << 
                                                      

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