On Wed, Nov 16, 2011 at 11:47 PM, Uros Bizjak <ubizjak@gmail.com> wrote:

> The gcc simulate-thread.exp testsuite exposed the problem in handling
> of alpha atomic sequences. Single-stepping broke link in alpha's LL/SC
> atomic sequences.
>
> Attached patch copies handling of atomic sequences from rs6000-tdep.c
> and adapts the functionality for alpha.
>
> 2011-11-16  Uros Bizjak  <ubizjak@gmail.com>
>
>        * alpha-tdep.c (beq_opcode): New.
>        (ldl_l_opcode, ldq_l_opcode, stl_c_opcode, stq_c_opcode): Ditto.
>        (alpha_deal_with_atomic_sequence): New function.
>        (alpha_gdbarch_init): Handle single stepping of atomic sequences
>        with alpha_deal_with_atomic_sequence.
>
> Patched gdb survives simulate-thread.exp testsuite on native
> alphaev68-pc-linux-gnu.
>
> I don't have write access, so If OK, please someone commit this patch
> to gdb CVS.

[v2]: Since this patch is almost a copy of rs6000-tdep.c atomic
sequence handling, also take into account proposed changes [1] to
original rs6000 implementation.

[1] http://sourceware.org/ml/gdb-patches/2011-11/msg00468.html

Uros,