gdb/gdb-ppc-watchpoint.patch

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https://bugzilla.redhat.com/show_bug.cgi?id=827600
Re: [PATCH] disable ptrace BookE interface for PowerPC server processors
http://sourceware.org/ml/gdb-patches/2012-05/msg01107.html
http://sourceware.org/ml/gdb-cvs/2012-05/msg00221.html
### src/gdb/ChangeLog 2012/05/31 18:44:47 1.14306
### src/gdb/ChangeLog 2012/05/31 22:07:29 1.14307
## -1,3 +1,9 @@
+2012-05-31 Edjunior Machado <emachado@linux.vnet.ibm.com>
+
+ * ppc-linux-nat.c (have_ptrace_booke_interface): Disable ptrace
+ BookE interface for PowerPC server processors if not available
+ in the Linux Kernel.
+
2012-05-31 Keith Seitz <keiths@redhat.com>
* linespec.c (decode_objc): Add cleanup to free
--- src/gdb/ppc-linux-nat.c 2012/05/30 13:37:17 1.112
+++ src/gdb/ppc-linux-nat.c 2012/05/31 22:07:31 1.113
@@ -1421,17 +1421,20 @@
/* Check for kernel support for BOOKE debug registers. */
if (ptrace (PPC_PTRACE_GETHWDBGINFO, tid, 0, &booke_debug_info) >= 0)
{
- have_ptrace_booke_interface = 1;
- max_slots_number = booke_debug_info.num_instruction_bps
- + booke_debug_info.num_data_bps
- + booke_debug_info.num_condition_regs;
- }
- else
- {
- /* Old school interface and no BOOKE debug registers support. */
- have_ptrace_booke_interface = 0;
- memset (&booke_debug_info, 0, sizeof (struct ppc_debug_info));
+ /* Check whether ptrace BOOKE interface is functional and
+ provides any supported feature. */
+ if (booke_debug_info.features != 0)
+ {
+ have_ptrace_booke_interface = 1;
+ max_slots_number = booke_debug_info.num_instruction_bps
+ + booke_debug_info.num_data_bps
+ + booke_debug_info.num_condition_regs;
+ return have_ptrace_booke_interface;
+ }
}
+ /* Old school interface and no BOOKE debug registers support. */
+ have_ptrace_booke_interface = 0;
+ memset (&booke_debug_info, 0, sizeof (struct ppc_debug_info));
}
return have_ptrace_booke_interface;