Re: Fwd: RE: [RFC][PATCH] ARM: ptrace: remove single-step emulation code

On Wed, 19 Jan 2011, Loïc Minier wrote:

    Hey

I think we need to keep an eye on this and be ready to check ltrace if this gets merged

I think ltrace is broken already and needs to be fixed regardless.

Motivations for the removal of PTRACE_SINGLESTEP on ARM are:

1.) Only a subset of ARMv7 instructions are supported 2.) Thumb-2 is unsupported 3.) The code is not SMP safe

As we are using ARMv7, Thumb-2 and SMP in the Linaro images, this makes ltrace tripply broken.

Nicolas