Fix PR19061, gdb hangs/spins-on-cpu when debugging any program on Alpha
authorRichard Henderson <rth@redhat.com>
Fri, 15 Dec 2017 18:19:42 +0000 (18:19 +0000)
committerPedro Alves <palves@redhat.com>
Fri, 15 Dec 2017 18:19:42 +0000 (18:19 +0000)
commit68f81d60196eb201b209873cf53258f13b0046b9
treea9542d13ddd8ea99d15f4931911042ed3c26f01f
parent1af17fd9cc3a453e55ce5b8f556c51859bf40363
Fix PR19061, gdb hangs/spins-on-cpu when debugging any program on Alpha

This fixes PR19061, where gdb hangs/spins-on-cpu when debugging any
program on Alpha.

(This patch is Uros' forward port of the patch from comment #5
of the PR [1].)

Patch was tested on alphaev68-linux-gnu, also tested with gcc's
testsuite, where it fixed all hangs in guality.exp and
simulate-thread.exp testcases.

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=19061#c5

gdb/ChangeLog:
2017-12-15  Richard Henderson  <rth@redhat.com>
    Uros Bizjak  <ubizjak@gmail.com>

PR gdb/19061
* alpha-tdep.c (alpha_software_single_step): Call
alpha_deal_with_atomic_sequence here.
(set_gdbarch_software_single_step): Set to
alpha_software_single_step.
* nat/linux-ptrace.h [__alpha__]: Define GDB_ARCH_IS_TRAP_BRKPT
and GDB_ARCH_IS_TRAP_HWBKPT.
gdb/ChangeLog
gdb/alpha-tdep.c
gdb/nat/linux-ptrace.h