[7.5] PATCH: PR backtrace/14646 [x32] backtrace doesn't work

[H.J. Lu]

On Sat, Oct 20, 2012 at 6:56 PM, Joel Brobecker <brobecker@adacore.com> wrote:
>> This patch backports the fix from trunk to 7.5 branch.  Tested on
>> Linux/x86-64 and Linux/x32.  OK to install?
> [...]
>>       PR backtrace/14646
>>       PR gdb/14647
>>       * i386-tdep.h (gdbarch_tdep): Remove sp_regnum_from_eax and
>>       pc_regnum_from_eax.
>>       * i386-tdep.c (i386_gdbarch_init): Don't use sp_regnum_from_eax
>>       nor pc_regnum_from_eax.
>>       * amd64-tdep.c (amd64_x32_init_abi): Don't set sp_regnum_from_eax
>>       nor pc_regnum_from_eax.
>
> I'm sorry to say that I am not comfortable at all with this going
> in the 7.5 branch. If Mark is super confident, then OK, but this is
> touching sp/pc handling for all x86 and x86-64 targets. And I don't
> think that the issue this patch is fixing is that critical.
>

This patch reverts the changed made on 7.5 branch, which
brings 7.5 branch back to 7.4 branch.  It should be 100% safe.

-- 
H.J.