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| author | Alan Modra <amodra@gmail.com> | 2015-01-20 21:11:37 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-01-20 21:46:07 +1030 |
| commit | 5ad18f16abf3555582782a86cc1daa751ea8b9b8 (patch) | |
| tree | cb1793c968131fa6c1a86c2462bb24d33f9fb137 | |
| parent | c05b575a8dfabab6af5d8586d1a5c0c67f819ac2 (diff) | |
| download | gdb-5ad18f16abf3555582782a86cc1daa751ea8b9b8.zip gdb-5ad18f16abf3555582782a86cc1daa751ea8b9b8.tar.gz gdb-5ad18f16abf3555582782a86cc1daa751ea8b9b8.tar.bz2 | |
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.
| -rw-r--r-- | ld/ChangeLog | 10 | ||||
| -rw-r--r-- | ld/emulparams/elf64ppc.sh | 9 | ||||
| -rw-r--r-- | ld/scripttempl/elf.sc | 3 |
3 files changed, 16 insertions, 6 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 4641ff0..5a97e32 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -7,6 +7,16 @@ 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. (OTHER_READWRITE_SECTIONS): Move .branch_lt to.. (OTHER_RELRO_SECTIONS_2): ..here. diff --git a/ld/emulparams/elf64ppc.sh b/ld/emulparams/elf64ppc.sh index 89fc699..b805dbe 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 eb3312a..c9c80b0 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} : { |