Re: [PATCH] gdb.base/sigstep.exp: Mark xfail on unsupported scenarios on riscv64-linux-gnu

[Lancelot SIX <lsix@lancelotsix.com>]

On Mon, Jul 05, 2021 at 11:26:15AM +0100, Pedro Alves wrote:
> There's already a "can_single_step_to_signal_handler" proc in gdb.exp for this.
> 
>  # Return 1 if target hardware or OS supports single stepping to signal
>  # handler, otherwise, return 0.
> 
>  proc can_single_step_to_signal_handler {} {
>      # Targets don't have hardware single step.  On these targets, when
>      # a signal is delivered during software single step, gdb is unable
>      # to determine the next instruction addresses, because start of signal
>      # handler is one of them.
>      return [can_hardware_single_step]
>  }
> 
> this is already checked by sigstep.exp, here:
> 
>  foreach enter_cmd { "stepi" "nexti" "step" "next" "continue" } {
>      if { $enter_cmd != "continue" && ![can_single_step_to_signal_handler] } {
>          continue
>      }
> 
> You should just need to make can_hardware_single_step return false for riscv64.
> 

Indeed.

Thanks for pointing this out!

Lancelot.