summaryrefslogtreecommitdiffstats
path: root/scripts/mksysmap
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /scripts/mksysmap
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-xscripts/mksysmap60
1 files changed, 60 insertions, 0 deletions
diff --git a/scripts/mksysmap b/scripts/mksysmap
new file mode 100755
index 000000000..16a08b8ef
--- /dev/null
+++ b/scripts/mksysmap
@@ -0,0 +1,60 @@
+#!/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)
+
+# $NM produces the following output:
+# f0081e80 T alloc_vfsmnt
+
+# The second row specify the type of the symbol:
+# A = Absolute
+# B = Uninitialised data (.bss)
+# C = Common symbol
+# D = Initialised data
+# G = Initialised data for small objects
+# I = Indirect reference to another symbol
+# N = Debugging symbol
+# R = Read only
+# S = Uninitialised data for small objects
+# T = Text code symbol
+# U = Undefined symbol
+# V = Weak symbol
+# W = Weak symbol
+# Corresponding small letters are local symbols
+
+# For System.map filter away:
+# a - local absolute symbols
+# U - undefined global symbols
+# N - debugging symbols
+# w - local weak symbols
+
+# 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'.
+#
+# Ignored prefixes:
+# $ - local symbols for ARM, MIPS, etc.
+# .L - local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc.
+# __crc_ - modversions
+# __kstrtab_ - EXPORT_SYMBOL (symbol name)
+# __kstrtabns_ - EXPORT_SYMBOL (namespace)
+#
+# Ignored symbols:
+# L0 - for LoongArch?
+
+$NM -n $1 | grep -v \
+ -e ' [aNUw] ' \
+ -e ' \$' \
+ -e ' \.L' \
+ -e ' __crc_' \
+ -e ' __kstrtab_' \
+ -e ' __kstrtabns_' \
+ -e ' L0$' \
+> $2