Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #!/bin/sh -x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) # Based on the vmlinux file create the System.map file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) # System.map is used by module-init tools and some debugging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) # tools to retrieve the actual addresses of symbols in the kernel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) # Usage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) # mksysmap vmlinux System.map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #####
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) # Generate System.map (actual filename passed as second argument)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) # $NM produces the following output:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) # f0081e80 T alloc_vfsmnt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #   The second row specify the type of the symbol:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #   A = Absolute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #   B = Uninitialised data (.bss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #   C = Common symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #   D = Initialised data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #   G = Initialised data for small objects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #   I = Indirect reference to another symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #   N = Debugging symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #   R = Read only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #   S = Uninitialised data for small objects
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #   T = Text code symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #   U = Undefined symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #   V = Weak symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #   W = Weak symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #   Corresponding small letters are local symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) # For System.map filter away:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #   a - local absolute symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #   U - undefined global symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #   N - debugging symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #   w - local weak symbols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) # readprofile starts reading symbols when _stext is found, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) # continue until it finds a symbol which is not either of 'T', 't',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) # 'W' or 'w'. __crc_ are 'A' and placed in the middle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) # so we just ignore them to let readprofile continue to work.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) # (At least sparc64 has __crc_ in the middle).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) $NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)\|\( \.L\)' > $2