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powerpc/boot/wrapper: Add "-z rodynamic" when using LLD

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Normally all read-only sections precede SHF_WRITE sections. .dynamic
and .got have the SHF_WRITE flag; .dynamic probably because of
DT_DEBUG. LLD emits an error when this happens, so use "-z rodynamic"
to mark .dynamic as read-only.

Signed-off-by: Bill Wendling <morbo@google.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201118223910.2711337-1-morbo@google.com
This commit is contained in:
Bill Wendling 2020-11-18 14:39:10 -08:00 committed by Michael Ellerman
parent a538d184e3
commit 26ba9f9651
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/boot/wrapper
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@ -46,6 +46,7 @@ compression=.gz
uboot_comp=gzip
pie=
format=
rodynamic=
# cross-compilation prefix
CROSS=
@ -353,6 +354,7 @@ epapr)
platformo="$object/pseries-head.o $object/epapr.o $object/epapr-wrapper.o"
link_address='0x20000000'
pie=-pie
rodynamic=$(if ${CROSS}ld -V 2>&1 | grep -q LLD ; then echo "-z rodynamic"; fi)
;;
mvme5100)
platformo="$object/fixed-head.o $object/mvme5100.o"
@ -493,7 +495,7 @@ if [ "$platform" != "miboot" ]; then
text_start="-Ttext $link_address"
fi
#link everything
${CROSS}ld -m $format -T $lds $text_start $pie $nodl -o "$ofile" $map \
${CROSS}ld -m $format -T $lds $text_start $pie $nodl $rodynamic -o "$ofile" $map \
$platformo $tmp $object/wrapper.a
rm $tmp
fi