testsuite: Fix gdb.gdb/selftest.exp for C++-O2-g-built GDB

[deliverable/binutils-gdb.git] / gdb / i386fbsd-nat.c

diff --git a/gdb/i386fbsd-nat.c b/gdb/i386fbsd-nat.c
index ad439e3d44e384729699e8aa1117c072ac75d418..716b51364e5ccda75bedd6d356441958ec506561 100644 (file)
--- a/gdb/i386fbsd-nat.c
+++ b/gdb/i386fbsd-nat.c
@@ -1,6 +1,6 @@
 /* Native-dependent code for FreeBSD/i386.
 
-   Copyright (C) 2001-2015 Free Software Foundation, Inc.
+   Copyright (C) 2001-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -30,6 +30,7 @@
 #include "fbsd-nat.h"
 #include "i386-tdep.h"
 #include "x86-nat.h"
+#include "x86bsd-nat.h"
 #include "i386bsd-nat.h"
 
 /* Resume execution of the inferior process.  If STEP is nonzero,
@@ -116,6 +117,37 @@ i386fbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
 }
 \f
 
+#ifdef PT_GETXSTATE_INFO
+/* Implement the to_read_description method.  */
+
+static const struct target_desc *
+i386fbsd_read_description (struct target_ops *ops)
+{
+  static int xsave_probed;
+  static uint64_t xcr0;
+
+  if (!xsave_probed)
+    {
+      struct ptrace_xstate_info info;
+
+      if (ptrace (PT_GETXSTATE_INFO, ptid_get_pid (inferior_ptid),
+                 (PTRACE_TYPE_ARG3) &info, sizeof (info)) == 0)
+       {
+         x86bsd_xsave_len = info.xsave_len;
+         xcr0 = info.xsave_mask;
+       }
+      xsave_probed = 1;
+    }
+
+  if (x86bsd_xsave_len != 0)
+    {
+      return i386_target_description (xcr0);
+    }
+  else
+    return tdesc_i386;
+}
+#endif
+
 /* Prevent warning from -Wmissing-prototypes.  */
 void _initialize_i386fbsd_nat (void);
 
@@ -127,24 +159,12 @@ _initialize_i386fbsd_nat (void)
   /* Add some extra features to the common *BSD/i386 target.  */
   t = i386bsd_target ();
 
-#ifdef HAVE_PT_GETDBREGS
-
-  x86_use_watchpoints (t);
-
-  x86_dr_low.set_control = i386bsd_dr_set_control;
-  x86_dr_low.set_addr = i386bsd_dr_set_addr;
-  x86_dr_low.get_addr = i386bsd_dr_get_addr;
-  x86_dr_low.get_status = i386bsd_dr_get_status;
-  x86_dr_low.get_control = i386bsd_dr_get_control;
-  x86_set_debug_register_length (4);
-
-#endif /* HAVE_PT_GETDBREGS */
-
+#ifdef PT_GETXSTATE_INFO
+  t->to_read_description = i386fbsd_read_description;
+#endif
 
   t->to_resume = i386fbsd_resume;
-  t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
-  t->to_find_memory_regions = fbsd_find_memory_regions;
-  add_target (t);
+  fbsd_nat_add_target (t);
 
   /* Support debugging kernel virtual memory images.  */
   bsd_kvm_add_target (i386fbsd_supply_pcb);