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Wed, 18 Nov 2020 14:39:19 -0800 (PST) Date: Wed, 18 Nov 2020 14:39:10 -0800 In-Reply-To: <20201017000151.150788-1-morbo@google.com> Message-Id: <20201118223910.2711337-1-morbo@google.com> Mime-Version: 1.0 References: <20201017000151.150788-1-morbo@google.com> X-Mailer: git-send-email 2.29.2.454.gaff20da3a2-goog Subject: [PATCH] powerpc/wrapper: add "-z rodynamic" when using LLD From: Bill Wendling To: Michael Ellerman , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nick Desaulniers , Bill Wendling , Fangrui Song , Alan Modra Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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. Cc: Fangrui Song Cc: Alan Modra Signed-off-by: Bill Wendling --- arch/powerpc/boot/wrapper | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index cd58a62e810d..e1194955adbb 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -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 -- 2.29.2.454.gaff20da3a2-goog