ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / src / linux-headers-5.4.0-216 / scripts

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# (c) 2014, Sasha Levin <sasha.levin@oracle.com>
#set -x

if [[ $# < 2 ]]; then
	echo "Usage:"
	echo "	$0 [vmlinux] [base path] [modules path]"
	exit 1
fi

vmlinux=$1
basepath=$2
modpath=$3
declare -A cache
declare -A modcache

parse_symbol() {
	# The structure of symbol at this point is:
	#   ([name]+[offset]/[total length])
	#
	# For example:
	#   do_basic_setup+0x9c/0xbf

if [[ $module == "" ]] ; then
		local objfile=$vmlinux
	elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
		local objfile=${modcache[$module]}
	else
		[[ $modpath == "" ]] && return
		local objfile=$(find "$modpath" -name "${module//_/[-_]}.ko*" -print -quit)
		[[ $objfile == "" ]] && return
		modcache[$module]=$objfile
	fi

# Remove the englobing parenthesis
	symbol=${symbol#$}
	symbol=${symbol%$}

# Strip segment
	local segment
	if [[ $symbol == *:* ]] ; then
		segment=${symbol%%:*}:
		symbol=${symbol#*:}
	fi

# Strip the symbol name so that we could look it up
	local name=${symbol%+*}

# Use 'nm vmlinux' to figure out the base address of said symbol.
	# It's actually faster to call it every time than to load it
	# all into bash.
	if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
		local base_addr=${cache[$module,$name]}
	else
		local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1)
		cache[$module,$name]="$base_addr"
	fi
	# Let's start doing the math to get the exact address into the
	# symbol. First, strip out the symbol total length.
	local expr=${symbol%/*}

# Now, replace the symbol name with the base address we found
	# before.
	expr=${expr/$name/0x$base_addr}

# Evaluate it to find the actual address
	expr=$((expr))
	local address=$(printf "%x\n" "$expr")

# Pass it to addr2line to get filename and line number
	# Could get more than one result
	if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
		local code=${cache[$module,$address]}
	else
		local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address")
		cache[$module,$address]=$code
	fi

# addr2line doesn't return a proper error code if it fails, so
	# we detect it using the value it prints so that we could preserve
	# the offset/size into the function and bail out
	if [[ $code == "??:0" ]]; then
		return
	fi

# Strip out the base of the path on each line
	code=$(while read -r line; do echo "${line#$basepath/}"; done <<< "$code")

# In the case of inlines, move everything to same line
	code=${code//$'\n'/' '}

# Replace old address with pretty line numbers
	symbol="$segment$name ($code)"
}

decode_code() {
	local scripts=`dirname "${BASH_SOURCE[0]}"`

echo "$1" | $scripts/decodecode
}

handle_line() {
	local words

# Tokenize
	read -a words <<<"$1"

# Remove hex numbers. Do it ourselves until it happens in the
	# kernel

# We need to know the index of the last element before we
	# remove elements because arrays are sparse
	local last=$(( ${#words[@]} - 1 ))

for i in "${!words[@]}"; do
		# Remove the address
		if [[ ${words[$i]} =~ \[\<([^]]+)\>\] ]]; then
			unset words[$i]
		fi

# Format timestamps with tabs
		if [[ ${words[$i]} == \[ && ${words[$i+1]} == *\] ]]; then
			unset words[$i]
			words[$i+1]=$(printf "[%13s\n" "${words[$i+1]}")
		fi
	done

if [[ ${words[$last]} =~ \[([^]]+)\] ]]; then
		module=${words[$last]}
		module=${module#\[}
		module=${module%\]}
		symbol=${words[$last-1]}
		unset words[$last-1]
	else
		# The symbol is the last element, process it
		symbol=${words[$last]}
		module=
	fi

unset words[$last]
	parse_symbol # modifies $symbol

# Add up the line number to the symbol
	echo "${words[@]}" "$symbol $module"
}

while read line; do
	# Let's see if we have an address in the line
	if [[ $line =~ \[\<([^]]+)\>\] ]] ||
	   [[ $line =~ [^+\ ]+\+0x[0-9a-f]+/0x[0-9a-f]+ ]]; then
		# Translate address to line numbers
		handle_line "$line"
	# Is it a code line?
	elif [[ $line == *Code:* ]]; then
		decode_code "$line"
	else
		# Nothing special in this line, show it as is
		echo "$line"
	fi
done

[+] ..
[-] ld-version.sh [edit]
[+] package
[-] stackusage [edit]
[-] pnmtologo.c [edit]
[-] gcc-plugin.sh [edit]
[-] setlocalversion [edit]
[-] stackdelta [edit]
[-] checkkconfigsymbols.py [edit]
[-] extract-cert.c [edit]
[-] extract-sys-certs.pl [edit]
[-] unifdef.c [edit]
[-] Makefile.extrawarn [edit]
[-] Makefile.kcov [edit]
[-] .gitignore [edit]
[-] documentation-file-ref-check [edit]
[-] parse-maintainers.pl [edit]
[-] Makefile.ubsan [edit]
[+] atomic
[-] checksyscalls.sh [edit]
[-] spdxcheck-test.sh [edit]
[-] recordmcount.h [edit]
[-] mkuboot.sh [edit]
[-] kallsyms.c [edit]
[-] link-vmlinux.sh [edit]
[-] sortextable.h [edit]
[-] show_delta [edit]
[-] Makefile.gcc-plugins [edit]
[-] ver_linux [edit]
[-] leaking_addresses.pl [edit]
[-] subarch.include [edit]
[-] check_extable.sh [edit]
[-] gcc-ld [edit]
[-] diffconfig [edit]
[-] bpf_helpers_doc.py [edit]
[-] decode_stacktrace.sh [edit]
[-] split-man.pl [edit]
[-] makelst [edit]
[-] mkcompile_h [edit]
[-] module-common.lds [edit]
[-] kmsg-doc [edit]
[-] Makefile [edit]
[-] Makefile.modbuiltin [edit]
[-] gcc-goto.sh [edit]
[-] mksysmap [edit]
[-] modules-check.sh [edit]
[-] nsdeps [edit]
[-] gcc-x86_64-has-stack-protector.sh [edit]
[-] ubuntu-retpoline-extract-one [edit]
[-] gen_compile_commands.py [edit]
[-] find-unused-docs.sh [edit]
[-] coccicheck [edit]
[-] gfp-translate [edit]
[-] Makefile.kasan [edit]
[-] config [edit]
[-] adjust_autoksyms.sh [edit]
[-] asn1_compiler.c [edit]
[+] mod
[-] cc-can-link.sh [edit]
[+] selinux
[-] checkpatch.pl [edit]
[+] coccinelle
[-] Makefile.modfinal [edit]
[-] headers_check.pl [edit]
[-] recordmcount.c [edit]
[-] sphinx-pre-install [edit]
[-] Makefile.modsign [edit]
[-] headers_install.sh [edit]
[-] patch-kernel [edit]
[-] xz_wrap.sh [edit]
[+] dtc
[+] basic
[+] tracing
[-] headerdep.pl [edit]
[-] const_structs.checkpatch [edit]
[-] extract_xc3028.pl [edit]
[-] tags.sh [edit]
[-] get_dvb_firmware [edit]
[-] Makefile.build [edit]
[-] clang-version.sh [edit]
[-] tools-support-relr.sh [edit]
[-] gcc-x86_32-has-stack-protector.sh [edit]
[-] bootgraph.pl [edit]
[-] gen_ksymdeps.sh [edit]
[-] Makefile.clean [edit]
[-] spdxcheck.py [edit]
[-] decodecode [edit]
[-] insert-sys-cert.c [edit]
[-] extract-module-sig.pl [edit]
[+] gdb
[-] sortextable.c [edit]
[-] prune-kernel [edit]
[+] kconfig
[-] cleanfile [edit]
[-] namespace.pl [edit]
[-] checkincludes.pl [edit]
[-] faddr2line [edit]
[-] checkstack.pl [edit]
[-] mkmakefile [edit]
[-] Makefile.lib [edit]
[+] ksymoops
[-] profile2linkerlist.pl [edit]
[-] gcc-version.sh [edit]
[-] Makefile.modpost [edit]
[-] recordmcount.pl [edit]
[-] extract-ikconfig [edit]
[-] bloat-o-meter [edit]
[-] Makefile.dtbinst [edit]
[-] kernel-doc [edit]
[-] Lindent [edit]
[+] gcc-plugins
[-] cleanpatch [edit]
[-] bin2c.c [edit]
[-] xen-hypercalls.sh [edit]
[-] markup_oops.pl [edit]
[-] checkversion.pl [edit]
[-] conmakehash.c [edit]
[-] Makefile.headersinst [edit]
[-] export_report.pl [edit]
[+] genksyms
[-] get_abi.pl [edit]
[-] Makefile.asm-generic [edit]
[-] objdiff [edit]
[-] sign-file.c [edit]
[-] depmod.sh [edit]
[-] file-size.sh [edit]
[-] Makefile.modinst [edit]
[-] Kconfig.include [edit]
[-] Makefile.host [edit]
[-] extract-vmlinux [edit]
[-] get_maintainer.pl [edit]
[-] Makefile.package [edit]
[-] spelling.txt [edit]
[-] Kbuild.include [edit]