forked from Minki/linux
2ea038917b
This reverts commitad7a953c52. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL")9bb482476cThese stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang <wenji.huang@oracle.com> Reported-by: "Theodore Ts'o" <tytso@mit.edu> Reported-by: Dave Jones <davej@redhat.com> Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
46 lines
1.3 KiB
Bash
46 lines
1.3 KiB
Bash
#!/bin/sh -x
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# Based on the vmlinux file create the System.map file
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# System.map is used by module-init tools and some debugging
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# tools to retrieve the actual addresses of symbols in the kernel.
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#
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# Usage
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# mksysmap vmlinux System.map
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#####
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# Generate System.map (actual filename passed as second argument)
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# $NM produces the following output:
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# f0081e80 T alloc_vfsmnt
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# The second row specify the type of the symbol:
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# A = Absolute
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# B = Uninitialised data (.bss)
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# C = Comon symbol
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# D = Initialised data
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# G = Initialised data for small objects
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# I = Indirect reference to another symbol
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# N = Debugging symbol
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# R = Read only
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# S = Uninitialised data for small objects
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# T = Text code symbol
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# U = Undefined symbol
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# V = Weak symbol
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# W = Weak symbol
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# Corresponding small letters are local symbols
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# For System.map filter away:
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# a - local absolute symbols
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# U - undefined global symbols
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# N - debugging symbols
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# w - local weak symbols
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# readprofile starts reading symbols when _stext is found, and
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# continue until it finds a symbol which is not either of 'T', 't',
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# 'W' or 'w'. __crc_ are 'A' and placed in the middle
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# so we just ignore them to let readprofile continue to work.
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# (At least sparc64 has __crc_ in the middle).
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$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $2
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