| 1 | #!/bin/sh -x |
| 2 | # Based on the vmlinux file create the System.map file |
| 3 | # System.map is used by module-init tools and some debugging |
| 4 | # tools to retrieve the actual addresses of symbols in the kernel. |
| 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 | |
| 14 | # readprofile starts reading symbols when _stext is found, and |
| 15 | # continue until it finds a symbol which is not either of 'T', 't', |
| 16 | # 'W' or 'w'. |
| 17 | # |
| 18 | |
| 19 | ${NM} -n ${1} | sed >${2} -e " |
| 20 | # --------------------------------------------------------------------------- |
| 21 | # Ignored symbol types |
| 22 | # |
| 23 | |
| 24 | # a: local absolute symbols |
| 25 | # N: debugging symbols |
| 26 | # U: undefined global symbols |
| 27 | # w: local weak symbols |
| 28 | / [aNUw] /d |
| 29 | |
| 30 | # --------------------------------------------------------------------------- |
| 31 | # Ignored prefixes |
| 32 | # (do not forget a space before each pattern) |
| 33 | |
| 34 | # local symbols for ARM, MIPS, etc. |
| 35 | / \\$/d |
| 36 | |
| 37 | # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc. |
| 38 | / \.L/d |
| 39 | |
| 40 | # arm64 EFI stub namespace |
| 41 | / __efistub_/d |
| 42 | |
| 43 | # arm64 local symbols in PIE namespace |
| 44 | / __pi_\\$/d |
| 45 | / __pi_\.L/d |
| 46 | |
| 47 | # arm64 local symbols in non-VHE KVM namespace |
| 48 | / __kvm_nvhe_\\$/d |
| 49 | / __kvm_nvhe_\.L/d |
| 50 | |
| 51 | # lld arm/aarch64/mips thunks |
| 52 | / __[[:alnum:]]*Thunk_/d |
| 53 | |
| 54 | # CFI type identifiers |
| 55 | / __kcfi_typeid_/d |
| 56 | / __kvm_nvhe___kcfi_typeid_/d |
| 57 | / __pi___kcfi_typeid_/d |
| 58 | |
| 59 | # CRC from modversions |
| 60 | / __crc_/d |
| 61 | |
| 62 | # EXPORT_SYMBOL (symbol name) |
| 63 | / __kstrtab_/d |
| 64 | |
| 65 | # EXPORT_SYMBOL (namespace) |
| 66 | / __kstrtabns_/d |
| 67 | |
| 68 | # --------------------------------------------------------------------------- |
| 69 | # Ignored suffixes |
| 70 | # (do not forget '$' after each pattern) |
| 71 | |
| 72 | # arm |
| 73 | /_from_arm$/d |
| 74 | /_from_thumb$/d |
| 75 | /_veneer$/d |
| 76 | |
| 77 | # --------------------------------------------------------------------------- |
| 78 | # Ignored symbols (exact match) |
| 79 | # (do not forget a space before and '$' after each pattern) |
| 80 | |
| 81 | # for LoongArch? |
| 82 | / L0$/d |
| 83 | |
| 84 | # ppc |
| 85 | / _SDA_BASE_$/d |
| 86 | / _SDA2_BASE_$/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 |
| 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 | " |