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Re: PATCH: PR other/48007: Unwind library doesn't work with UNITS_PER_WORD > sizeof (void *)
On Sun, Mar 6, 2011 at 1:15 PM, Andrew Pinski <pinskia@gmail.com> wrote:
> On Sun, Mar 6, 2011 at 9:18 AM, H.J. Lu <hongjiu.lu@intel.com> wrote:
>> Hi,
>>
>> We shouldn't save call frame hard registers as "void *". ?This patch
>> changes the unwind library to save call frame hard registers as
>> _Unwind_Word. ?OK for 4.7?
>
> I think this will break the ABI for the MIPS N32 ABI. ?Not to mention
> the MIPS N32 ABI works fine with the unwinding part this way. ?Does
> someone use the unwinding library to look at the registers in previous
> stack frames?
It may be psABI/implementation specific. X32 glibc force unwind calls
_Unwind_SetGRValue to get a 64bit register value.
--
H.J.