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.
7 # mksysmap vmlinux System.map [exclude]
11 # Generate System.map (actual filename passed as second argument)
12 # The following refers to the symbol type as per nm(1).
14 # readprofile starts reading symbols when _stext is found, and
15 # continue until it finds a symbol which is not either of 'T', 't',
19 ${NM} -n ${1} | sed >${2} -e "
20 # ---------------------------------------------------------------------------
21 # Ignored symbol types
24 # a: local absolute symbols
25 # N: debugging symbols
26 # U: undefined global symbols
27 # w: local weak symbols
30 # ---------------------------------------------------------------------------
32 # (do not forget a space before each pattern)
34 # local symbols for ARM, MIPS, etc.
37 # local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
40 # arm64 EFI stub namespace
43 # arm64 local symbols in PIE namespace
47 # arm64 local symbols in non-VHE KVM namespace
51 # lld arm/aarch64/mips thunks
52 / __[[:alnum:]]*Thunk_/d
54 # CFI type identifiers
56 / __kvm_nvhe___kcfi_typeid_/d
57 / __pi___kcfi_typeid_/d
59 # CRC from modversions
62 # EXPORT_SYMBOL (symbol name)
65 # EXPORT_SYMBOL (namespace)
68 # ---------------------------------------------------------------------------
70 # (do not forget '$' after each pattern)
77 # ---------------------------------------------------------------------------
78 # Ignored symbols (exact match)
79 # (do not forget a space before and '$' after each pattern)
88 # ---------------------------------------------------------------------------
90 # (symbols that contain the pattern are ignored)
96 # ---------------------------------------------------------------------------
97 # Ignored kallsyms symbols
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)