Gecko [ paroquia-rio-de-mouro.pt ]

Name	Size	Permission	Date
basic	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
coccinelle	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
dtc	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
gdb	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
genksyms	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
kconfig	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
ksymoops	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
mod	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
package	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
selinux	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
tracing	[ DIR ]	drwxr-xr-x	2021-04-21 07:33
.asn1_compiler.cmd	3.18 KB	-rw-r--r--	2021-04-16 13:37
.conmakehash.cmd	2.33 KB	-rw-r--r--	2021-04-16 13:37
.extract-cert.cmd	4.39 KB	-rw-r--r--	2021-04-16 13:37
.insert-sys-cert.cmd	3.88 KB	-rw-r--r--	2021-04-16 13:37
.kallsyms.cmd	2.32 KB	-rw-r--r--	2021-04-16 13:37
.recordmcount.cmd	3.31 KB	-rw-r--r--	2021-04-16 13:37
.sign-file.cmd	5.01 KB	-rw-r--r--	2021-04-16 13:37
.sortextable.cmd	3.48 KB	-rw-r--r--	2021-04-16 13:37
Kbuild.include	13.37 KB	-rw-r--r--	2021-04-16 11:57
Lindent	496 B	-rwxr-xr-x	2016-01-11 00:01
Makefile	2.03 KB	-rw-r--r--	2021-04-16 11:57
Makefile.asm-generic	683 B	-rw-r--r--	2016-01-11 00:01
Makefile.build	17.16 KB	-rw-r--r--	2021-04-16 11:57
Makefile.clean	2.83 KB	-rw-r--r--	2016-01-11 00:01
Makefile.dtbinst	1.41 KB	-rw-r--r--	2016-01-11 00:01
Makefile.extrawarn	2.54 KB	-rw-r--r--	2021-04-16 11:57
Makefile.fwinst	2.01 KB	-rw-r--r--	2016-01-11 00:01
Makefile.headersinst	4.65 KB	-rw-r--r--	2016-01-11 00:01
Makefile.help	68 B	-rw-r--r--	2016-01-11 00:01
Makefile.host	4.51 KB	-rw-r--r--	2016-01-11 00:01
Makefile.kasan	976 B	-rw-r--r--	2021-04-16 11:57
Makefile.lib	14.9 KB	-rw-r--r--	2021-04-16 11:57
Makefile.modbuiltin	1.78 KB	-rw-r--r--	2016-01-11 00:01
Makefile.modinst	1.43 KB	-rw-r--r--	2021-04-16 11:57
Makefile.modpost	5.25 KB	-rw-r--r--	2021-04-16 11:57
Makefile.modsign	1005 B	-rw-r--r--	2016-01-11 00:01
analyze_suspend.py	117.57 KB	-rwxr-xr-x	2016-01-11 00:01
asn1_compiler	27.3 KB	-rwxr-xr-x	2021-04-16 13:37
asn1_compiler.c	35.54 KB	-rw-r--r--	2016-01-11 00:01
bloat-o-meter	1.9 KB	-rwxr-xr-x	2021-04-16 11:57
bootgraph.pl	6.28 KB	-rwxr-xr-x	2016-01-11 00:01
check-lc_ctype.c	201 B	-rw-r--r--	2016-01-11 00:01
check_extable.sh	4.9 KB	-rwxr-xr-x	2016-01-11 00:01
checkincludes.pl	1.77 KB	-rwxr-xr-x	2016-01-11 00:01
checkkconfigsymbols.py	11.44 KB	-rwxr-xr-x	2016-01-11 00:01
checkpatch.pl	169.77 KB	-rwxr-xr-x	2021-04-16 11:57
checkstack.pl	5.39 KB	-rwxr-xr-x	2021-04-16 11:57
checksyscalls.sh	5.62 KB	-rwxr-xr-x	2016-01-11 00:01
checkversion.pl	1.86 KB	-rwxr-xr-x	2016-01-11 00:01
cleanfile	3.41 KB	-rwxr-xr-x	2016-01-11 00:01
cleanpatch	5.01 KB	-rwxr-xr-x	2016-01-11 00:01
coccicheck	4.66 KB	-rwxr-xr-x	2016-01-11 00:01
config	4.6 KB	-rwxr-xr-x	2021-04-16 11:57
conmakehash	13.2 KB	-rwxr-xr-x	2021-04-16 13:37
conmakehash.c	5.98 KB	-rw-r--r--	2016-01-11 00:01
decode_stacktrace.sh	3.15 KB	-rwxr-xr-x	2021-04-16 11:57
decodecode	2.15 KB	-rwxr-xr-x	2021-04-16 11:57
depmod.sh	1.9 KB	-rwxr-xr-x	2021-04-16 11:57
diffconfig	3.68 KB	-rwxr-xr-x	2016-01-11 00:01
docproc.c	13.8 KB	-rw-r--r--	2016-01-11 00:01
export_report.pl	4.53 KB	-rwxr-xr-x	2016-01-11 00:01
extract-cert	14.27 KB	-rwxr-xr-x	2021-04-16 13:37
extract-cert.c	3.46 KB	-rw-r--r--	2016-01-11 00:01
extract-ikconfig	1.69 KB	-rwxr-xr-x	2016-01-11 00:01
extract-module-sig.pl	3.61 KB	-rwxr-xr-x	2016-01-11 00:01
extract-sys-certs.pl	3.7 KB	-rwxr-xr-x	2021-04-16 11:57
extract-vmlinux	1.6 KB	-rwxr-xr-x	2016-01-11 00:01
gcc-goto.sh	495 B	-rwxr-xr-x	2016-01-11 00:01
gcc-ld	676 B	-rwxr-xr-x	2016-01-11 00:01
gcc-version.sh	822 B	-rwxr-xr-x	2016-01-11 00:01
gcc-x86_32-has-stack-protector.sh	184 B	-rwxr-xr-x	2016-01-11 00:01
gcc-x86_64-has-stack-protector.sh	209 B	-rwxr-xr-x	2021-04-16 11:57
gen_initramfs_list.sh	7.87 KB	-rwxr-xr-x	2016-01-11 00:01
get_maintainer.pl	58.29 KB	-rwxr-xr-x	2016-01-11 00:01
gfp-translate	1.71 KB	-rwxr-xr-x	2016-01-11 00:01
headerdep.pl	3.46 KB	-rwxr-xr-x	2016-01-11 00:01
headers.sh	477 B	-rwxr-xr-x	2016-01-11 00:01
headers_check.pl	3.6 KB	-rwxr-xr-x	2016-01-11 00:01
headers_install.sh	1.28 KB	-rwxr-xr-x	2016-01-11 00:01
insert-sys-cert	18.59 KB	-rwxr-xr-x	2021-04-16 13:37
insert-sys-cert.c	13.08 KB	-rw-r--r--	2021-04-16 11:57
kallsyms	18.62 KB	-rwxr-xr-x	2021-04-16 13:37
kallsyms.c	16.8 KB	-rw-r--r--	2021-04-16 11:57
kernel-doc	76.08 KB	-rwxr-xr-x	2021-04-16 11:57
kernel-doc-xml-ref	4.22 KB	-rwxr-xr-x	2016-01-11 00:01
ld-version.sh	207 B	-rwxr-xr-x	2021-04-16 11:57
link-vmlinux.sh	5.84 KB	-rwxr-xr-x	2021-04-16 11:57
makelst	773 B	-rwxr-xr-x	2016-01-11 00:01
markup_oops.pl	8.08 KB	-rwxr-xr-x	2016-01-11 00:01
mkcompile_h	2.46 KB	-rwxr-xr-x	2016-01-11 00:01
mkmakefile	1.16 KB	-rwxr-xr-x	2016-01-11 00:01
mksysmap	1.33 KB	-rwxr-xr-x	2021-04-16 11:57
mkuboot.sh	379 B	-rwxr-xr-x	2016-01-11 00:01
mkversion	74 B	-rw-r--r--	2016-01-11 00:01
module-common.lds	888 B	-rw-r--r--	2021-04-16 11:57
namespace.pl	13.13 KB	-rwxr-xr-x	2021-04-16 11:57
objdiff	2.69 KB	-rwxr-xr-x	2016-01-11 00:01
patch-kernel	9.91 KB	-rwxr-xr-x	2016-01-11 00:01
pnmtologo.c	11.91 KB	-rw-r--r--	2016-01-11 00:01
profile2linkerlist.pl	375 B	-rwxr-xr-x	2016-01-11 00:01
recordmcount	24 KB	-rwxr-xr-x	2021-04-16 13:37
recordmcount.c	15.31 KB	-rw-r--r--	2021-04-16 11:57
recordmcount.h	16.4 KB	-rw-r--r--	2021-04-16 11:57
recordmcount.pl	18.3 KB	-rwxr-xr-x	2021-04-16 11:57
setlocalversion	4.69 KB	-rwxr-xr-x	2021-04-16 11:57
show_delta	2.99 KB	-rwxr-xr-x	2016-01-11 00:01
sign-file	18.95 KB	-rwxr-xr-x	2021-04-16 13:37
sign-file.c	8.14 KB	-rwxr-xr-x	2016-01-11 00:01
sortextable	18.04 KB	-rwxr-xr-x	2021-04-16 13:37
sortextable.c	7.65 KB	-rw-r--r--	2016-01-11 00:01
sortextable.h	5.48 KB	-rw-r--r--	2016-01-11 00:01
spelling.txt	21.33 KB	-rw-r--r--	2016-01-11 00:01
stackdelta	1.8 KB	-rwxr-xr-x	2016-01-11 00:01
stackusage	759 B	-rwxr-xr-x	2016-01-11 00:01
tags.sh	10.58 KB	-rwxr-xr-x	2021-04-16 11:57
ubuntu-retpoline-extract-one	7.26 KB	-rw-r--r--	2021-04-16 13:37
unifdef.c	34.8 KB	-rw-r--r--	2021-04-16 11:57
ver_linux	3.89 KB	-rwxr-xr-x	2016-01-11 00:01
xen-hypercalls.sh	351 B	-rw-r--r--	2016-01-11 00:01
xz_wrap.sh	562 B	-rwxr-xr-x	2016-01-11 00:01

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"