* ppc-linux-nat.c (have_ptrace_booke_interface): Disable ptrace

BookE interface for PowerPC server processors if not available
in the Linux Kernel.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e2ca89fd4c19c76276e0ebe6123b840496b76a91..af25ef785a1248791edd8b97f54297fe5aa78b71 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -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

diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c
index b9e0c855963db5aa432b2d8732430092801298f8..45cdd735ed07177cbb4127b7ff15a330f78508a2 100644 (file)
--- a/gdb/ppc-linux-nat.c
+++ b/gdb/ppc-linux-nat.c
@@ -1421,17 +1421,20 @@ have_ptrace_booke_interface (void)
       /* 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;