[PATCH v2] ARM: Add SystemTap probes to longjmp and setjmp.

[Will Newton]

On 6 February 2014 22:11, Roland McGrath <roland@hack.frob.com> wrote:
> Can you clarify why you want to change the jmp_buf layout?
> I don't see why any change you might want to make would necessitate that.

In order to have the correct registers live I need to free up a temp
register which involves loading lr and sp earlier than the
call-preserved register set. I could do this by offsetting into the
jmpbuf but it seems more natural just to move lr and sp to the front
of the jmp_buf and load registers in ascending order. As far as I am
aware the layout of jmp_buf is completely opaque so I don't see why
this would cause any problems?

-- 
Will Newton
Toolchain Working Group, Linaro