Gecko [ tsuru-no-tsurugi.tokyo ]

Name	Size	Permission	Date
atomic	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
basic	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
clang-tools	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
coccinelle	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
dtc	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
dummy-tools	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
gcc-plugins	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
gdb	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
genksyms	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
kconfig	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
ksymoops	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
mod	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
package	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
selinux	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
tracing	[ DIR ]	drwxr-xr-x	2026-07-21 06:37
.gitignore	160 B	-rw-r--r--	2021-11-01 05:53
Kbuild.include	10.15 KB	-rw-r--r--	2026-06-21 00:49
Kconfig.include	2.57 KB	-rw-r--r--	2026-06-21 00:49
Lindent	502 B	-rwxr-xr-x	2021-11-01 05:53
Makefile	1.64 KB	-rw-r--r--	2026-06-21 00:49
Makefile.asm-generic	1.82 KB	-rw-r--r--	2021-11-01 05:53
Makefile.build	19.66 KB	-rw-r--r--	2026-06-21 00:49
Makefile.clang	1.56 KB	-rw-r--r--	2026-06-21 00:49
Makefile.clean	2.2 KB	-rw-r--r--	2021-11-01 05:53
Makefile.compiler	2.74 KB	-rw-r--r--	2026-06-21 00:49
Makefile.dtbinst	1007 B	-rw-r--r--	2026-06-21 00:49
Makefile.extrawarn	3.02 KB	-rw-r--r--	2026-06-21 00:49
Makefile.gcc-plugins	2.71 KB	-rw-r--r--	2026-06-21 00:49
Makefile.headersinst	2.88 KB	-rw-r--r--	2021-11-01 05:53
Makefile.host	4.63 KB	-rw-r--r--	2021-11-01 05:53
Makefile.kasan	1.67 KB	-rw-r--r--	2021-11-01 05:53
Makefile.kcov	333 B	-rw-r--r--	2021-11-01 05:53
Makefile.kcsan	739 B	-rw-r--r--	2021-11-01 05:53
Makefile.lib	18.02 KB	-rw-r--r--	2026-06-21 00:49
Makefile.modfinal	2.73 KB	-rw-r--r--	2026-06-21 00:49
Makefile.modinst	2.52 KB	-rw-r--r--	2026-06-21 00:49
Makefile.modpost	4.37 KB	-rw-r--r--	2026-06-21 00:49
Makefile.package	6.61 KB	-rw-r--r--	2021-11-01 05:53
Makefile.ubsan	770 B	-rw-r--r--	2026-06-21 00:49
Makefile.userprogs	1.57 KB	-rw-r--r--	2021-11-01 05:53
adjust_autoksyms.sh	2.07 KB	-rwxr-xr-x	2021-11-01 05:53
as-version.sh	2.03 KB	-rwxr-xr-x	2026-06-21 00:49
asn1_compiler.c	35.33 KB	-rw-r--r--	2026-06-21 00:49
bin2c.c	743 B	-rw-r--r--	2021-11-01 05:53
bloat-o-meter	3.36 KB	-rwxr-xr-x	2021-11-01 05:53
bootgraph.pl	5.64 KB	-rwxr-xr-x	2021-11-01 05:53
bpf_doc.py	24.98 KB	-rwxr-xr-x	2026-06-21 00:49
cc-can-link.sh	166 B	-rwxr-xr-x	2021-11-01 05:53
cc-version.sh	1.51 KB	-rwxr-xr-x	2021-11-01 05:53
check-sysctl-docs	4.37 KB	-rwxr-xr-x	2021-11-01 05:53
check_extable.sh	4.93 KB	-rwxr-xr-x	2021-11-01 05:53
checkdeclares.pl	1.1 KB	-rwxr-xr-x	2021-11-01 05:53
checkincludes.pl	1.94 KB	-rwxr-xr-x	2021-11-01 05:53
checkkconfigsymbols.py	15.75 KB	-rwxr-xr-x	2026-06-21 00:49
checkpatch.pl	224.05 KB	-rwxr-xr-x	2026-06-21 00:49
checkstack.pl	5.86 KB	-rwxr-xr-x	2026-06-21 00:49
checksyscalls.sh	7.42 KB	-rwxr-xr-x	2021-11-01 05:53
checkversion.pl	2.16 KB	-rwxr-xr-x	2021-11-01 05:53
cleanfile	3.46 KB	-rwxr-xr-x	2021-11-01 05:53
cleanpatch	5.06 KB	-rwxr-xr-x	2021-11-01 05:53
coccicheck	7.89 KB	-rwxr-xr-x	2021-11-01 05:53
config	4.78 KB	-rwxr-xr-x	2026-06-21 00:49
const_structs.checkpatch	1009 B	-rw-r--r--	2021-11-01 05:53
decode_stacktrace.sh	7.51 KB	-rwxr-xr-x	2026-06-21 00:49
decodecode	2.88 KB	-rwxr-xr-x	2021-11-01 05:53
depmod.sh	1.41 KB	-rwxr-xr-x	2021-11-01 05:53
dev-needs.sh	6.07 KB	-rwxr-xr-x	2021-11-01 05:53
diffconfig	4.12 KB	-rwxr-xr-x	2026-06-21 00:49
documentation-file-ref-check	5.55 KB	-rwxr-xr-x	2021-11-01 05:53
export_report.pl	4.5 KB	-rwxr-xr-x	2021-11-01 05:53
extract-cert.c	3.63 KB	-rw-r--r--	2026-06-21 00:49
extract-ikconfig	1.69 KB	-rwxr-xr-x	2021-11-01 05:53
extract-module-sig.pl	3.66 KB	-rwxr-xr-x	2021-11-01 05:53
extract-sys-certs.pl	3.75 KB	-rwxr-xr-x	2021-11-01 05:53
extract-vmlinux	1.66 KB	-rwxr-xr-x	2021-11-01 05:53
extract_xc3028.pl	44.62 KB	-rwxr-xr-x	2021-11-01 05:53
faddr2line	8.17 KB	-rwxr-xr-x	2026-06-21 00:49
file-size.sh	86 B	-rwxr-xr-x	2021-11-01 05:53
find-unused-docs.sh	1.27 KB	-rwxr-xr-x	2021-11-01 05:53
gcc-goto.sh	511 B	-rwxr-xr-x	2021-11-01 05:53
gcc-ld	711 B	-rwxr-xr-x	2021-11-01 05:53
gcc-x86_32-has-stack-protector.sh	405 B	-rwxr-xr-x	2026-06-21 00:49
gcc-x86_64-has-stack-protector.sh	195 B	-rwxr-xr-x	2026-06-21 00:49
gen_autoksyms.sh	1.47 KB	-rwxr-xr-x	2021-11-01 05:53
gen_ksymdeps.sh	556 B	-rwxr-xr-x	2021-11-01 05:53
generate_initcall_order.pl	5.95 KB	-rwxr-xr-x	2021-11-01 05:53
get_abi.pl	15.1 KB	-rwxr-xr-x	2026-06-21 00:49
get_dvb_firmware	24.54 KB	-rwxr-xr-x	2021-11-01 05:53
get_feat.pl	14.34 KB	-rwxr-xr-x	2021-11-01 05:53
get_maintainer.pl	67.13 KB	-rwxr-xr-x	2021-11-01 05:53
gfp-translate	1.69 KB	-rwxr-xr-x	2021-11-01 05:53
headerdep.pl	3.5 KB	-rwxr-xr-x	2021-11-01 05:53
headers_check.pl	3.73 KB	-rwxr-xr-x	2021-11-01 05:53
headers_install.sh	3.35 KB	-rwxr-xr-x	2021-11-01 05:53
insert-sys-cert.c	13.08 KB	-rw-r--r--	2026-06-21 00:49
jobserver-exec	2.16 KB	-rwxr-xr-x	2021-11-01 05:53
kallsyms.c	18.06 KB	-rw-r--r--	2021-11-01 05:53
kernel-doc	68.74 KB	-rwxr-xr-x	2026-06-21 00:49
ld-version.sh	1.82 KB	-rwxr-xr-x	2026-06-21 00:49
leaking_addresses.pl	12.8 KB	-rwxr-xr-x	2026-06-21 00:49
link-vmlinux.sh	10.92 KB	-rwxr-xr-x	2026-06-21 00:49
makelst	808 B	-rwxr-xr-x	2021-11-01 05:53
markup_oops.pl	7.92 KB	-rwxr-xr-x	2021-11-01 05:53
min-tool-version.sh	558 B	-rwxr-xr-x	2021-11-01 05:53
mkcompile_h	2.48 KB	-rwxr-xr-x	2021-11-01 05:53
mksysmap	1.34 KB	-rwxr-xr-x	2026-06-21 00:49
mkuboot.sh	414 B	-rwxr-xr-x	2021-11-01 05:53
module.lds.S	1.65 KB	-rw-r--r--	2026-06-21 00:49
modules-check.sh	427 B	-rwxr-xr-x	2021-11-01 05:53
nsdeps	1.72 KB	-rw-r--r--	2021-11-01 05:53
objdiff	2.84 KB	-rwxr-xr-x	2021-11-01 05:53
pahole-flags.sh	749 B	-rwxr-xr-x	2026-06-21 00:49
pahole-version.sh	269 B	-rwxr-xr-x	2026-06-21 00:49
parse-maintainers.pl	4.54 KB	-rwxr-xr-x	2021-11-01 05:53
patch-kernel	9.95 KB	-rwxr-xr-x	2021-11-01 05:53
profile2linkerlist.pl	414 B	-rwxr-xr-x	2021-11-01 05:53
prune-kernel	708 B	-rwxr-xr-x	2021-11-01 05:53
recordmcount.c	16.75 KB	-rw-r--r--	2026-06-21 00:49
recordmcount.h	19.37 KB	-rw-r--r--	2021-11-01 05:53
recordmcount.pl	17.63 KB	-rwxr-xr-x	2026-06-21 00:49
remove-stale-files	1.3 KB	-rwxr-xr-x	2021-11-01 05:53
setlocalversion	3.5 KB	-rwxr-xr-x	2021-11-01 05:53
show_delta	3.01 KB	-rwxr-xr-x	2021-11-01 05:53
sign-file.c	9.93 KB	-rw-r--r--	2026-06-21 00:49
sorttable.c	8.74 KB	-rw-r--r--	2026-06-21 00:49
sorttable.h	9.83 KB	-rw-r--r--	2026-06-21 00:49
spdxcheck-test.sh	277 B	-rw-r--r--	2021-11-01 05:53
spdxcheck.py	10.09 KB	-rwxr-xr-x	2021-11-01 05:53
spelling.txt	31.88 KB	-rw-r--r--	2021-11-01 05:53
sphinx-pre-install	24.45 KB	-rwxr-xr-x	2026-06-21 00:49
split-man.pl	604 B	-rwxr-xr-x	2021-11-01 05:53
stackdelta	1.84 KB	-rwxr-xr-x	2021-11-01 05:53
stackusage	794 B	-rwxr-xr-x	2021-11-01 05:53
subarch.include	619 B	-rw-r--r--	2021-11-01 05:53
syscallhdr.sh	1.89 KB	-rwxr-xr-x	2021-11-01 05:53
syscallnr.sh	1.45 KB	-rwxr-xr-x	2021-11-01 05:53
syscalltbl.sh	1.45 KB	-rwxr-xr-x	2021-11-01 05:53
tags.sh	9.87 KB	-rwxr-xr-x	2026-06-21 00:49
tools-support-relr.sh	546 B	-rwxr-xr-x	2021-11-01 05:53
ubuntu-retpoline-extract-one	7.26 KB	-rw-r--r--	2026-06-21 00:49
unifdef.c	34.8 KB	-rw-r--r--	2021-11-01 05:53
ver_linux	2.59 KB	-rwxr-xr-x	2021-11-01 05:53
xen-hypercalls.sh	386 B	-rwxr-xr-x	2021-11-01 05:53
xz_wrap.sh	563 B	-rwxr-xr-x	2021-11-01 05:53

Rename

#!/bin/bash

exec </dev/null

object="$1"
src="$2"
bit16="$3"

SECTION=".discard.retpoline_safe"

# Form an associative lookup for the symbol numbers in the ELF symbol table.
# Uses 8 character 0 expanded hexadecimal key for ease of consumption.
__symbolmap_init()
{
	readelf -W --syms "$1" |
		awk '($4 == "SECTION" && $1 ~ /^[0-9]*:/) { printf("%08x %08x\n", int($1), int($7)); }' | \
	while read symbol_num section_num
	do
		echo "symbolmap_$symbol_num='$section_num'"
	done
}
symbolmap_init()
{
	eval $(__symbolmap_init "$1")
}
symbolmap()
{
	eval RET="\$symbolmap_$1"
	if [ "$RET" = '' ]; then
		echo "symbolmap: $1: invalid section" 1>&2
		exit 1
	fi
}

# Form an associative lookup for the section numbers in the ELF symbol table.
# Uses 8 character 0 expanded hexadecimal key for ease of consumption.
__sectionmap_init()
{
	readelf -W --headers "$1" | \
		awk '
						{ sub("\\[", ""); sub("\\]", ""); }
                        ($1 ~ /^[0-9][0-9]*/)   { printf("%08x %s %s %s\n", int($1), $2, $3, $4); }
		' | \
	{
		while read section_num section_name section_type section_vma
		do
			echo "sectionmap_$section_num='$section_name'"
			echo "sectionvma_$section_num='$section_vma'"
			case "$section_type" in
			REL|RELA) section_relocation="$section_type" ;;
			esac
		done
		echo "section_relocation='$section_relocation'"
	}
}
sectionmap_init()
{
	eval $(__sectionmap_init "$1")
}
sectionmap()
{
	eval RET="\$sectionmap_$1"
	if [ "$RET" = '' ]; then
		echo "sectionmap: $1: invalid section" 1>&2
		exit 1
	fi
}
sectionvma()
{
	eval RET="\$sectionvma_$1"
	if [ "$RET" = '' ]; then
		echo "sectionvma: $1: invalid section" 1>&2
		exit 1
	fi
}

# Read and parse the hex-dump output.
hex="[0-9a-f]"
hex_8="$hex$hex$hex$hex$hex$hex$hex$hex"
hexspc="[0-9a-f ]"
hexspc_8="$hexspc$hexspc$hexspc$hexspc$hexspc$hexspc$hexspc$hexspc"

raw32()
{
	readelf --hex-dump "$2" "$1" 2>/dev/null |
	sed \
		-e '/^Hex/d' -e '/^$/d' -e '/^ *NOTE/d' \
		-e 's/  *[^ ][^ ]*  *$'"$hex_8"'$ $'"$hexspc_8"'$ $'"$hexspc_8"'$ $'"$hexspc_8"'$ .*/\1 \2 \3 \4 /' \
		-e 's/$'"$hex$hex"'$$'"$hex$hex"'$$'"$hex$hex"'$$'"$hex$hex"'$ /\4\3\2\1 /g' \
		-e 's/ $//g' -e 's/ /\n/g'
}
#-e 's/$[^ ][^ ][^ ][^ ][^ ][^ ][^ ][^ ]$ $[^ ][^ ][^ ][^ ][^ ][^ ][^ ][^ ]$ /\2\1 /g' \

rela()
{
	#file="$(basename "$1")"
	file="$1"

# Read relocation information for a 64bit binary.  Each relocation entry
	# is 3 long longs so we collect 6 quads here.  Note that the dump is in
	# listed in increasing byte order not withstanding the quad split.
	#
	# The record says to take the value of <symbol> add <symbol offset> and
	# shove that into <write offset> in the segment of the <symbol>.
	#
	# Format:
	#  <write offset>	64 bits
	#  <symbol number>	32 bits
	#  <relocation type>	32 bits
	#  <symbol offset>	64 bits
	raw32 "$1" ".rela$SECTION" | \
	{
		a1=''; a2=''; a3=''; a4=''; a5=''
		while read a6
		do
			[ "$a1" = '' ] && { a1="$a6"; continue; }
			[ "$a2" = '' ] && { a2="$a6"; continue; }
			[ "$a3" = '' ] && { a3="$a6"; continue; }
			[ "$a4" = '' ] && { a4="$a6"; continue; }
			[ "$a5" = '' ] && { a5="$a6"; continue; }

#echo ">$a1< >$a2< >$a3< >$a4< >$a5< >$a6<" 1>&2
			#echo "type<$a3> symbol<$a4> offset<$a2$a1> addr<$a6a5>" 1>&2

symbolmap "$a4"; section_num="$RET"
			#echo "section_num<$section_num>" 1>&2

sectionmap "$section_num"; section="$RET"
			sectionvma "$section_num"; vma="$RET"
			#echo "section<$section> vma<$vma>" 1>&2

# Adjust the segment addressing by the segment offset.
			printf -v addr "%u" "0x$a6$a5"
			printf -v vma "%u" "0x$vma"
			let offset="$addr + $vma"
			printf -v offset "%x" "$offset"

echo "$file-$section-$offset"

a1=''; a2=''; a3=''; a4=''; a5=''
		done
	} | sed -e 's/-00*$[0-9a-f]$/-\1/'
}

# Form an associative lookup for the raw contents for an ELF section.
# Uses 8 character 0 expanded hexadecimal key for ease of consumption.
contentmap_init()
{
	raw32 "$1" "$2" >"$tmp"
	let offset=0
	while read value
	do
		printf -v offset_hex "%08x" $offset
		eval contentmap_$offset_hex=\'$value\'

let offset="$offset + 4"
	done <"$tmp"
	rm -f "$tmp"
}
contentmap()
{
	eval RET="\$contentmap_$1"
	if [ "$RET" = '' ]; then
		echo "contentmap: $1: invalid offset" 1>&2
		exit 1
	fi
}

rel()
{
	# Load up the current contents of the $SECTION segment
	# as the offsets (see below) are recorded there and we will need
	# those to calculate the actuall address.
	contentmap_init "$1" "$SECTION"

#file="$(basename "$1")"
	file="$1"

# Read relocation information for a 32bit binary.  Each relocation entry
	# is 3 longs so we collect 3 quads here.  Note that the dump is in
	# listed in increasing byte order not withstanding the quad split.
	#
	# The record says to take the value of <symbol> and add that to the
	# existing contents of <write offset> in the segment of the <symbol>.
	#
	# Format:
	#  <write offset>	32 bits
	#  <symbol number>	24 bits
	#  <relocation type>	 8 bits
	raw32 "$1" ".rel$SECTION" | \
	{
		a1=''
		while read a2
		do
			[ "$a1" = '' ] && { a1="$a2"; continue; }

#echo ">$a1< >$a2<"
			contentmap "$a1"; offset="$RET"
			symbolmap "00${a2%??}"; section_num="$RET"

sectionmap "$section_num"; section="$RET"
			sectionvma "$section_num"; vma="$RET"
			#echo ">$a1< >$a2< >$offset< >$section<"

echo "$file-$section-$offset"

a1=''
		done
	} | sed -e 's/-00*$[0-9a-f]$/-\1/'
}

tmp=$(mktemp --tmpdir "retpoline-extract-XXXXXX")

disassemble()
{
	local object="$1"
	local src="$2"
	local options="$3"
	local selector="$4"

objdump $options --disassemble --no-show-raw-insn "$object" | \
	awk -F' ' '
		BEGIN				{ file="'"$object"'"; src="'"$src"'"; }
		/Disassembly of section/        { segment=$4; sub(":", "", segment); }
		/^[0-9a-f][0-9a-f]* <.*>:/      { tag=$0; sub(".*<", "", tag); sub(">.*", "", tag); }
		$0 ~ /(call|jmp)q?  *\*0x[0-9a-f]*$%rip$/ {
			next
		}
		$0 ~ /(call|jmp)q?  *\*.*%/ {
			sub(":", "", $1);
			if ('"$selector"') {
				offset=$1
				$1=tag
				print(file "-" segment "-" offset " " src " " segment " " $0);
			}
		}
	'
}

# Accumulate potentially vunerable indirect call/jmp sequences.  We do this
# by examining the raw disassembly for affected forms, recording the location
# of each.
case "$bit16" in
'')	disassemble "$object" "$src" '' 'segment != ".init.text"' ;;
*)	disassemble "$object" "$src" '--disassembler-options=i8086' 'segment != ".init.text" && segment != ".text32" && segment != ".text64"'
	disassemble "$object" "$src" '--disassembler-options=i386' 'segment == ".text32"'
	disassemble "$object" "$src" '--disassembler-options=x86-64' 'segment == ".text64"'
	;;
esac | sort -k 1b,1 >"$object.ur-detected"
[ ! -s "$object.ur-detected" ] && rm -f "$object.ur-detected"

# Load up the symbol table and section mappings.
symbolmap_init "$object"
sectionmap_init "$object"

# Accumulate annotated safe indirect call/jmp sequences.  We do this by examining
# the $SECTION sections (and their associated relocation information),
# each entry represents the address of an instruction which has been marked
# as ok.
case "$section_relocation" in
REL)	rel "$object" ;;
RELA)	rela "$object" ;;
esac | sort -k 1b,1 >"$object.ur-safe"
[ ! -s "$object.ur-safe" ] && rm -f "$object.ur-safe"

# We will perform the below join on the summarised and sorted fragments
# formed above.  This is performed in retpoline-check.
#join -v 1 -j 1 "$tmp.extracted" "$tmp.safe" | sed -s 's/[^ ]*  *//'

rm -f "$tmp"