Re: [commit] [testsuite patch] Fix gdb.btrace/tailcall-only.exp errors on x86_64-m32

[Pedro Alves <palves at redhat dot com>]

On 07/21/2016 02:50 PM, Metzger, Markus T wrote:

> I use the triplet to select the source files for a test.  Seems that wasn't such
> a good idea.
> 
> Using the pointer size doesn't seem to be such a good idea, either, as x32
> uses x86_64 ISA with 32-bit pointers.

But that's exactly what you want.

> 
> Is there a recommended/documented way on how this should be done?

- is_amd64_regs_target detects x86_64 ISA.

- is_lp64_target detects 64-bit/32-bit pointers.

Thus:

  is_amd64_regs_target && is_lp64_target  == 64-bit
  is_amd64_regs_target && !is_lp64_target == x32
  !is_amd64_regs_target                   == 32-bit

See intro comments to is_amd64_regs_target and proc is_x86_like_target.

Thanks,
Pedro Alves