tui: Simplify tui_alloc_content

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

diff --git a/gdb/i386fbsd-nat.c b/gdb/i386fbsd-nat.c
index ad439e3d44e384729699e8aa1117c072ac75d418..f5d2ee3870a540e40105647ee23474a66eb03b12 100644 (file)
--- a/gdb/i386fbsd-nat.c
+++ b/gdb/i386fbsd-nat.c
@@ -116,6 +116,37 @@ 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)
+       {
+         i386bsd_xsave_len = info.xsave_len;
+         xcr0 = info.xsave_mask;
+       }
+      xsave_probed = 1;
+    }
+
+  if (i386bsd_xsave_len != 0)
+    {
+      return i386_target_description (xcr0);
+    }
+  else
+    return tdesc_i386;
+}
+#endif
+
 /* Prevent warning from -Wmissing-prototypes.  */
 void _initialize_i386fbsd_nat (void);
 
@@ -140,11 +171,12 @@ _initialize_i386fbsd_nat (void)
 
 #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);