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| author | Alan Modra <amodra@gmail.com> | 2015-01-20 17:19:15 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-01-20 19:52:42 +1030 |
| commit | 23283c1be02de06666e4d934b1fc499c0d72f9c2 (patch) | |
| tree | cd6bc9ab21af319ff36832b68394d152bd3e1946 /ld/ChangeLog | |
| parent | 3e2b0f3116a46c8a9a6ffbcb5ae4847b6601467a (diff) | |
| download | gdb-23283c1be02de06666e4d934b1fc499c0d72f9c2.zip gdb-23283c1be02de06666e4d934b1fc499c0d72f9c2.tar.gz gdb-23283c1be02de06666e4d934b1fc499c0d72f9c2.tar.bz2 | |
Reorder more powerpc64 sections for -z relro
This moves .got too, which requires .sdata and .sbss to move with it,
because these sections share addressing via the toc pointer and with
small-model code must be within a 16-bit signed offset. .plt, .iplt
and .branch_lt must also be moved since they are addressed via a
32-bit offset from the toc pointer, and we might have a very large
.data section.
This change means we may have some bss style sections before the data
segment, necessitating another PT_LOAD header. Also, since _edata is
defined at the end of the data segment it's possible with an empty
.data to have _edata at the end of .plt which looks a little unusual
since .plt is a bss style section. That should only happen rarely in
real world binaries, but does occur in the ld testsuite.
ld/
* emulparams/elf64ppc.sh (BSS_PLT): Don't define.
(OTHER_READWRITE_SECTIONS): Move .branch_lt to..
(OTHER_RELRO_SECTIONS_2): ..here.
(DATA_GOT, SEPARATE_GOTPLT, DATA_SDATA, DATA_PLT,
PLT_BEFORE_GOT): Define.
* scripttempl/elf.sc: Handle DATA_SDATA and DATA_GOT/DATA_PLT/
PLT_BEFORE_GOT combination.
(DATA_GOT, SDATA_GOT): Don't define if either is already defined.
ld/testsuite/
* ld-powerpc/ambiguousv1.d,
* ld-powerpc/ambiguousv1b.d,
* ld-powerpc/ambiguousv2.d,
* ld-powerpc/ambiguousv2b.d,
* ld-powerpc/elfv2exe.d,
* ld-powerpc/elfv2so.d,
* ld-powerpc/tlsexe.r,
* ld-powerpc/tlsexetoc.r,
* ld-powerpc/tlsso.r,
* ld-powerpc/tlstocso.r: Update.
Diffstat (limited to 'ld/ChangeLog')
| -rw-r--r-- | ld/ChangeLog | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 4966045..1ca6fe3 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,5 +1,16 @@ 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. + (DATA_GOT, SEPARATE_GOTPLT, DATA_SDATA, DATA_PLT, + PLT_BEFORE_GOT): Define. + * scripttempl/elf.sc: Handle DATA_SDATA and DATA_GOT/DATA_PLT/ + PLT_BEFORE_GOT combination. + (DATA_GOT, SDATA_GOT): Don't define if either is already defined. + +2015-01-20 Alan Modra <amodra@gmail.com> + * emulparams/elf64ppc.sh (OTHER_READWRITE_SECTIONS): Move .opd to.. (OTHER_RELRO_SECTIONS_2): ..here, new define. * scripttempl/elf.sc: Add OTHER_RELRO_SECTIONS_2. |