Re: [Qemu-devel] [PATCH 11/26] tcg-aarch64: Reuse FP and LR in translated code

[Richard Henderson]

On 03/28/2014 02:48 AM, Claudio Fontana wrote:
> On 15.03.2014 03:48, Richard Henderson wrote:
>> We don't need the FP within translated code, and the LR is
>> otherwise unused.
>>
>> Signed-off-by: Richard Henderson <address@hidden>
> 
> The downside of this is that it disregards the procedure call standard from 
> ARM.

In what way do you believe the call standard to require a frame pointer?
Certainly GCC avoids generating one when it isn't needed, so why should we?

In any case, the real help comes in patch 14/26 where I implement the jit hook
so that GDB can unwind through the code_gen_buffer.


r~