PATCH: Properly handle protected function for ia32 and x86_64

[Andreas Jaeger]

"H. J. Lu" <hjl@lucon.org> writes:

> On Thu, Jan 20, 2005 at 09:33:54AM -0800, H. J. Lu wrote:
>> On Thu, Jan 20, 2005 at 11:17:55AM +0100, Andreas Schwab wrote:
>> > "H. J. Lu" <hjl@lucon.org> writes:
>> > 
>> > > I don't think we should worry about anything, like wrong insn, r_offset
>> > > == 0, jump table or data section.
>> > 
>> > At least we shouldn't crash.
>> 
>> How about this patch?
>> 
>> 
>
> I updated the patch to make ia32 and x86_64 the same in dealing with
> protected function symbols. On ia32, I disallow R_386_GOTOFF on
> protected function and on x86_64, I allow 32bit relative branch on
> protected function. Since we only warn global symbols, there is no
> need to check if h is NULL. Also I updated error message.
>
>
> H.J.
> ----
> 2005-01-24  H.J. Lu  <hongjiu.lu@intel.com>
>
> 	* elf32-i386.c (elf_i386_relocate_section): Disallow R_386_GOTOFF
> 	against protected function when building shared library.
>
> 	PR 584
> 	* elf64-x86-64.c (is_32bit_relative_branch): New.
> 	(elf64_x86_64_relocate_section): Alllow R_X86_64_PC32 on a
> 	protected function symbol when building shared library for
> 	32bit relative branch instruction.

I guess this bug is the reason for this one:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19664

I approve the x86-64 part of the patch but would suggest that you wait
another day for comments before checking in,

thanks,
Andreas
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
  SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
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