From: Alan Modra <amodra@gmail.com>
Date: Tue, 20 Jan 2015 10:41:37 +0000 (+1030)
Subject: Reorder more powerpc64 sections again for -z relro
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5ad18f16abf3555582782a86cc1daa751ea8b9b8;p=binutils-gdb.git

Reorder more powerpc64 sections again for -z relro

.toc1 is the second level TOC section used by gcc's -mminimal-toc.  It
too should be read-only after relocation.  Also, the last patch
description mentioned .sbss moving but didn't actually do that, so fix
that problem.  .tocbss (whatever that is) was before .sbss previously,
so move that one too.

	* emulparams/elf64ppc.sh (OTHER_SDATA_SECTIONS): Use in place of..
	(OTHER_BSS_SYMBOLS): ..this.
	(OTHER_PLT_RELOC_SECTIONS): Don't define.
	(OTHER_GOT_RELOC_SECTIONS): Add rela.toc1 and rela.tocbss.
	(OTHER_READWRITE_SECTIONS): Don't define.  Move .toc1 to..
	(OTHER_RELRO_SECTIONS_2): ..here.
	* scripttempl/elf.sc: Move SBSS too when DATA_SDATA.
---

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 4641ff06c81..5a97e32c649 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -5,6 +5,16 @@
 	Display a special message for PROVIDE'd symbols that are not being
 	provided.
 
+2015-01-20  Alan Modra  <amodra@gmail.com>
+
+	* emulparams/elf64ppc.sh (OTHER_SDATA_SECTIONS): Use in place of..
+	(OTHER_BSS_SYMBOLS): ..this.
+	(OTHER_PLT_RELOC_SECTIONS): Don't define.
+	(OTHER_GOT_RELOC_SECTIONS): Add rela.toc1 and rela.tocbss.
+	(OTHER_READWRITE_SECTIONS): Don't define.  Move .toc1 to..
+	(OTHER_RELRO_SECTIONS_2): ..here.
+	* scripttempl/elf.sc: Move SBSS too when DATA_SDATA.
+
 2015-01-20  Alan Modra  <amodra@gmail.com>
 
 	* emulparams/elf64ppc.sh (BSS_PLT): Don't define.
diff --git a/ld/emulparams/elf64ppc.sh b/ld/emulparams/elf64ppc.sh
index 89fc699baff..b805dbed93c 100644
--- a/ld/emulparams/elf64ppc.sh
+++ b/ld/emulparams/elf64ppc.sh
@@ -15,10 +15,8 @@ unset SBSS_END_SYMBOLS
 unset OTHER_END_SYMBOLS
 unset OTHER_RELRO_SECTIONS
 OTHER_TEXT_SECTIONS="*(.sfpr .glink)"
-OTHER_BSS_SYMBOLS="
+OTHER_SDATA_SECTIONS="
   .tocbss	${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.tocbss)}"
-OTHER_PLT_RELOC_SECTIONS="
-  .rela.tocbss	${RELOCATING-0} : { *(.rela.tocbss) }"
 
 if test x${RELOCATING+set} = xset; then
   GOT="
@@ -33,11 +31,12 @@ INITIAL_RELOC_SECTIONS="
   .rela.opd	${RELOCATING-0} : { *(.rela.opd) }"
 OTHER_GOT_RELOC_SECTIONS="
   .rela.toc	${RELOCATING-0} : { *(.rela.toc) }
+  .rela.toc1	${RELOCATING-0} : { *(.rela.toc1) }
+  .rela.tocbss	${RELOCATING-0} : { *(.rela.tocbss) }
   .rela.branch_lt	${RELOCATING-0} : { *(.rela.branch_lt) }"
-OTHER_READWRITE_SECTIONS="
-  .toc1		${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.toc1) }"
 OTHER_RELRO_SECTIONS_2="
   .opd		${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { KEEP (*(.opd)) }
+  .toc1		${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.toc1) }
   .branch_lt	${RELOCATING-0} :${RELOCATING+ ALIGN(8)} { *(.branch_lt) }"
 # Put .got before .data
 DATA_GOT=" "
diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index eb3312a452c..c9c80b0cc3e 100644
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -582,6 +582,7 @@ cat <<EOF
   ${INITIAL_READWRITE_SECTIONS}
   ${DATA_SDATA+${SDATA}}
   ${DATA_SDATA+${OTHER_SDATA_SECTIONS}}
+  ${DATA_SDATA+${SBSS}}
   ${DATA_GOT+${RELRO_NOW-${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}}
   ${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT-${GOT}}}}
   ${DATA_GOT+${RELRO_NOW-${GOTPLT}}}
@@ -609,7 +610,7 @@ cat <<EOF
   ${RELOCATING+. = .;}
   ${RELOCATING+${USER_LABEL_PREFIX}__bss_start = .;}
   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
-  ${SBSS}
+  ${DATA_SDATA-${SBSS}}
   ${BSS_PLT+${PLT}}
   .${BSS_NAME}          ${RELOCATING-0} :
   {