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On 03/20/2012 10:02 AM, Luis Gustavo wrote:If a target supports hw single-stepping for displaced stepping, GDB should just send a vCont;s packet to tell the target to step a single instruction. In my case, GDB was always sending a vCont;c instead.
On some arch, the original instruction may be translated to more than one instructions, and copied to scratch pad. So, we can't do single-step in scratch pad.
Even the case that one instruction is generated/copied to scratch pad can be optimized in your approach, but not sure it breaks software-single-step arch or not.
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