The attachment is a complete patch for [google/gcc-4_6] branch, to replace .ctors/.dtors with .init_array/.fini_array.
Bootstrap and crosstool testers pass.
I have verified that "gcc_cv_initfini_array=no", which means the
crosstool will do whatever it did before (won't replace .ctors/.dtors
with .init_array/.fini_array).
I also built Android toolchain and verified "gcc_cv_initfini_array=no".
r177933 is already in google/gcc-4_6_2-mobile and
google/gcc-4_6-mobile. I need to backport the rest to these two
branches.
ok?
2012-02-21 Jing Yu <jin...@google.com>
Google Ref 47894
Backport from mainline r177933, r175181, r177963, r178116, r183299.
2011-08-20 H.J. Lu <hongjiu...@intel.com>
PR other/46770
* config.gcc (tm_file): Add initfini-array.h if
.init_arrary/.fini_array are supported.
* crtstuff.c: Don't generate .ctors nor .dtors sections if
USE_INITFINI_ARRAY is defined.
* output.h (default_elf_init_array_asm_out_constructor): New.
(default_elf_fini_array_asm_out_destructor): Likewise.
* varasm.c (elf_init_array_section): Likewise.
(elf_fini_array_section): Likewise.
(get_elf_initfini_array_priority_section): Likewise.
(default_elf_init_array_asm_out_constructor): Likewise.
(default_elf_fini_array_asm_out_destructor): Likewise.
* config/initfini-array.h: New.
2011-06-18 H.J. Lu <hongjiu...@intel.com>
PR other/49325
* acinclude.m4 (gcc_AC_INITFINI_ARRAY): Properly check if
.init_array can be used with .ctors on targets.
* configure: Regenerated.
2011-08-22 H.J. Lu <hongjiu...@intel.com>
* acinclude.m4 (gcc_AC_INITFINI_ARRAY): Error if __ELF__ isn't
defined.
* configure: Regenerated.
2011-08-26 Rainer Orth <r...@cebitec.uni-bielefeld.de>
PR target/50166
* acinclude.m4 (gcc_AC_INITFINI_ARRAY): Check count in main.
* configure: Regenerate.
2012-01-19 Jakub Jelinek <ja...@redhat.com>
PR bootstrap/50237
* config/initfini-array.h: Guard content of the header
with #ifdef HAVE_INITFINI_ARRAY.
* configure.ac: Move gcc_AC_INITFINI_ARRAY much later into the
file.
Add initfini-array.h to tm_file here.
* acinclude.m4 (gcc_AC_INITFINI_ARRAY): For non-ia64 do a
linker test.
* config.gcc: Don't add initfini-array.h to tm_file here.
* configure: Regenerated.
Thanks,
Jing
On Tue, Feb 21, 2012 at 9:34 AM, H.J. Lu <hjl.to...@gmail.com> wrote:
> On Mon, Feb 20, 2012 at 11:31 PM, Jing Yu <jin...@google.com> wrote:
>> Hi H.J.,
>>
>> I think the patch itself is not enough.
>> I compared "AC_DEFUN([gcc_AC_INITFINI_ARRAY]" part (in acinclude.m4)
>> of gcc trunk and google/gcc-4_6_2-mobile, and found how
>> enable_initfini_array is
>> configured is different.
>>
>> The patch breaks some of our tests. enable_initfini_array should be
>> disabled for cross compile by default. But it is not true in our
>> branch. Could you please point us all related patches?
>>
>
> I missed this backport. There are some additional changes needed for
> non-Linux systems:
>
> http://gcc.gnu.org/ml/gcc-cvs/2011-08/msg00978.html
> http://gcc.gnu.org/ml/gcc-cvs/2011-08/msg01132.html
> http://gcc.gnu.org/ml/gcc-cvs/2012-01/msg00544.html
>
>
>
> --
> H.J.
initfini.patch
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