PATCH: Invalid R_X86_64_GOTPCREL -> R_X86_64_PC32 conversions with binutils 2.24/2.25?

[Steve Vormwald]

Thanks.  This patch fixes the problem for us.

Steven Vormwald
________________________________________
From: H.J. Lu [hjl.tools@gmail.com]
Sent: Wednesday, June 24, 2015 5:02 PM
To: Steve Vormwald; Binutils
Subject: Re: PATCH: Invalid R_X86_64_GOTPCREL -> R_X86_64_PC32 conversions with binutils 2.24/2.25?

On Wed, Jun 24, 2015 at 10:24 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Wed, Jun 24, 2015 at 4:26 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
>> I opened:
>>
>> https://sourceware.org/bugzilla/show_bug.cgi?id=18591
>>
>> H.J.
>>
>
> I checked in this patch to fix it.  Please it out.
>
> Thanks.
>
> H.J.
> ---
> When converting "mov foo@GOTPCREL(%rip), %reg" to "lea foo(%rip), %reg"
> with R_X86_64_PC32 relocation, it may overflow if the target section
> is more than 2GB away.  This patch estimates distance between mov
> instruction and the target section.  We convert R_X86_64_GOTPCREL to
> R_X86_64_PC32 only if their distance is less than 2GB.
>
> PR ld/18591
> * elf64-x86-64.c (elf_x86_64_convert_mov_to_lea): Don't convert
> R_X86_64_GOTPCREL to R_X86_64_PC32 if it will cause relocation
> overflow.

I checked in this patch to silence older GCC warning.

--
H.J.