linux-yocto/scripts/mksysmap
Masahiro Yamada c4802044a0 scripts/mksysmap: use sed with in-line comments
It is not feasible to insert comments in a multi-line shell command.
Use sed, and move comments close to the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2023-04-17 11:03:56 +09:00

1.3 KiB
Executable File

#!/bin/sh -x

Based on the vmlinux file create the System.map file

System.map is used by module-init tools and some debugging

tools to retrieve the actual addresses of symbols in the kernel.

Usage

mksysmap vmlinux System.map

Generate System.map (actual filename passed as second argument)

The following refers to the symbol type as per nm(1).

readprofile starts reading symbols when _stext is found, and

continue until it finds a symbol which is not either of 'T', 't',

'W' or 'w'.

${NM} -n ${1} | sed >${2} -e "

---------------------------------------------------------------------------

Ignored symbol types

a: local absolute symbols

N: debugging symbols

U: undefined global symbols

w: local weak symbols

/ [aNUw] /d

---------------------------------------------------------------------------

Ignored prefixes

(do not forget a space before each pattern)

local symbols for ARM, MIPS, etc.

/ $/d

local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.

/ .L/d

CRC from modversions

/ _crc/d

EXPORT_SYMBOL (symbol name)

/ _kstrtab/d

EXPORT_SYMBOL (namespace)

/ _kstrtabns/d

---------------------------------------------------------------------------

Ignored symbols (exact match)

(do not forget a space before and '$' after each pattern)

for LoongArch?

/ L0$/d "