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Support -z relro on metag

From: Alan Modra <amodra at gmail dot com>
To: binutils at sourceware dot org
Cc: Markos Chandras <markos dot chandras at imgtec dot com>
Date: Fri, 30 Dec 2016 00:13:10 +1030
Subject: Support -z relro on metag
Authentication-results: sourceware.org; auth=none

Is there a reason why -z relro can't be supported on metag?

The following fixes
metag-linux  -FAIL: strip -z relro (relro1)
metag-linux  -FAIL: strip -z relro -shared (relro1)
metag-linux  -FAIL: objcopy -z relro (relro1)
metag-linux  -FAIL: objcopy -z relro -shared (relro1)
metag-linux  -FAIL: objcopy -z relro (tdata1)
metag-linux  -FAIL: objcopy -shared -z relro (tdata1)
metag-linux  -FAIL: objcopy -z relro (tdata2)
metag-linux  -FAIL: objcopy -shared -z relro (tdata2)
metag-linux  -FAIL: objcopy -z relro (tdata3)
metag-linux  -FAIL: objcopy -shared -z relro (tdata3)
metag-linux  -FAIL: objcopy -shared -z relro (tbss1)
metag-linux  -FAIL: objcopy -shared -z relro (tbss2)
metag-linux  -FAIL: objcopy -shared -z relro (tbss3)
metag-linux  -FAIL: Build pr20995-2.so
metag-linux  -FAIL: pr20995-2
metag-linux  -FAIL: ld-elf/pr16322

diff --git a/ld/emulparams/elf32metag.sh b/ld/emulparams/elf32metag.sh
index 861daba..2a1d072 100644
--- a/ld/emulparams/elf32metag.sh
+++ b/ld/emulparams/elf32metag.sh
@@ -7,6 +7,7 @@ OUTPUT_FORMAT="elf32-metag"
 TEXT_START_ADDR=0x10005000
 ARCH=metag
 MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
+COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
 ENTRY=__start
 NOP=0xa0fffffe
 EXTRA_EM_FILE=metagelf

-- 
Alan Modra
Australia Development Lab, IBM

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