[RFC v2 25/38] convert to_static_tracepoint_markers_by_strid

[Tom Tromey <tromey@redhat.com>]

Note that this patch reformats the
to_static_tracepoint_markers_by_strid field declaration in struct
target_ops.  This was needed because make-target-delegates requires
the opening paren for the parameters to be on the same line as the
method name, and I didn't see an easy way to fix this.

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_static_tracepoint_markers_by_strid.
	* target.h (struct target_ops)
	<to_static_tracepoint_markers_by_strid>: Use
	TARGET_DEFAULT_NORETURN.

convert to_traceframe_info

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_traceframe_info.
	(return_null): Remove.
	* target.h (struct target_ops) <to_traceframe_info>: Use
	TARGET_DEFAULT_RETURN.

convert to_use_agent

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_use_agent.
	* target.h (struct target_ops) <to_use_agent>: Use
	TARGET_DEFAULT_NORETURN.

convert to_can_use_agent

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_can_use_agent.
	* target.h (struct target_ops) <to_can_use_agent>: Use
	TARGET_DEFAULT_RETURN.

convert to_augmented_libraries_svr4_read

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_augmented_libraries_svr4_read.
	* target.h (struct target_ops) <to_augmented_libraries_svr4_read>:
	Use TARGET_DEFAULT_RETURN.

convert to_supports_evaluation_of_breakpoint_conditions

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_supports_evaluation_of_breakpoint_conditions.
	* target.h (struct target_ops)
	<to_supports_evaluation_of_breakpoint_conditions>: Use
	TARGET_DEFAULT_RETURN.

convert to_can_run_breakpoint_commands

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_can_run_breakpoint_commands.
	* target.h (struct target_ops) <to_can_run_breakpoint_commands>:
	Use TARGET_DEFAULT_RETURN.

convert to_stop

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (update_current_target): Don't inherit or default
	to_stop.
	* target.h (struct target_ops) <to_stop>: Use
	TARGET_DEFAULT_IGNORE.

convert to_fetch_registers

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (target_fetch_registers): Unconditionally delegate.
	* target.h (struct target_ops) <to_fetch_registers>: Use
	TARGET_DEFAULT_NORETURN.

convert to_ranged_break_num_registers

2014-02-06  Tom Tromey  <tromey@redhat.com>

	* target-delegates.c: Rebuild.
	* target.c (target_ranged_break_num_registers): Unconditionally
	delegate.
	* target.h (struct target_ops) <to_ranged_break_num_registers>:
	Use TARGET_DEFAULT_RETURN.
---
 gdb/ChangeLog          |  82 +++++++++++++++++++++++++
 gdb/target-delegates.c | 158 +++++++++++++++++++++++++++++++++++++++++++++++++
 gdb/target.c           |  73 ++++-------------------
 gdb/target.h           |  31 ++++++----
 4 files changed, 273 insertions(+), 71 deletions(-)

diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 968d2fd..98d3f17 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -61,6 +61,18 @@ tdefault_wait (struct target_ops *self, ptid_t arg1, struct target_waitstatus *a
 }
 
 static void
+delegate_fetch_registers (struct target_ops *self, struct regcache *arg1, int arg2)
+{
+  self = self->beneath;
+  self->to_fetch_registers (self, arg1, arg2);
+}
+
+static void
+tdefault_fetch_registers (struct target_ops *self, struct regcache *arg1, int arg2)
+{
+}
+
+static void
 delegate_store_registers (struct target_ops *self, struct regcache *arg1, int arg2)
 {
   self = self->beneath;
@@ -126,6 +138,19 @@ tdefault_can_use_hw_breakpoint (struct target_ops *self, int arg1, int arg2, int
 }
 
 static int
+delegate_ranged_break_num_registers (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_ranged_break_num_registers (self);
+}
+
+static int
+tdefault_ranged_break_num_registers (struct target_ops *self)
+{
+  return -1;
+}
+
+static int
 delegate_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *arg1, struct bp_target_info *arg2)
 {
   self = self->beneath;
@@ -453,6 +478,18 @@ tdefault_thread_name (struct target_ops *self, struct thread_info *arg1)
 }
 
 static void
+delegate_stop (struct target_ops *self, ptid_t arg1)
+{
+  self = self->beneath;
+  self->to_stop (self, arg1);
+}
+
+static void
+tdefault_stop (struct target_ops *self, ptid_t arg1)
+{
+}
+
+static void
 delegate_rcmd (struct target_ops *self, char *arg1, struct ui_file *arg2)
 {
   self = self->beneath;
@@ -630,6 +667,32 @@ tdefault_supports_string_tracing (struct target_ops *self)
   return 0;
 }
 
+static int
+delegate_supports_evaluation_of_breakpoint_conditions (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_supports_evaluation_of_breakpoint_conditions (self);
+}
+
+static int
+tdefault_supports_evaluation_of_breakpoint_conditions (struct target_ops *self)
+{
+  return 0;
+}
+
+static int
+delegate_can_run_breakpoint_commands (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_can_run_breakpoint_commands (self);
+}
+
+static int
+tdefault_can_run_breakpoint_commands (struct target_ops *self)
+{
+  return 0;
+}
+
 static struct gdbarch *
 delegate_thread_architecture (struct target_ops *self, ptid_t arg1)
 {
@@ -958,6 +1021,58 @@ tdefault_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR arg1, s
   return 0;
 }
 
+static VEC(static_tracepoint_marker_p) *
+delegate_static_tracepoint_markers_by_strid (struct target_ops *self, const char *arg1)
+{
+  self = self->beneath;
+  return self->to_static_tracepoint_markers_by_strid (self, arg1);
+}
+
+static VEC(static_tracepoint_marker_p) *
+tdefault_static_tracepoint_markers_by_strid (struct target_ops *self, const char *arg1)
+{
+  tcomplain ();
+}
+
+static struct traceframe_info *
+delegate_traceframe_info (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_traceframe_info (self);
+}
+
+static struct traceframe_info *
+tdefault_traceframe_info (struct target_ops *self)
+{
+  return 0;
+}
+
+static int
+delegate_use_agent (struct target_ops *self, int arg1)
+{
+  self = self->beneath;
+  return self->to_use_agent (self, arg1);
+}
+
+static int
+tdefault_use_agent (struct target_ops *self, int arg1)
+{
+  tcomplain ();
+}
+
+static int
+delegate_can_use_agent (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_can_use_agent (self);
+}
+
+static int
+tdefault_can_use_agent (struct target_ops *self)
+{
+  return 0;
+}
+
 static int
 delegate_supports_btrace (struct target_ops *self)
 {
@@ -971,6 +1086,19 @@ tdefault_supports_btrace (struct target_ops *self)
   return 0;
 }
 
+static int
+delegate_augmented_libraries_svr4_read (struct target_ops *self)
+{
+  self = self->beneath;
+  return self->to_augmented_libraries_svr4_read (self);
+}
+
+static int
+tdefault_augmented_libraries_svr4_read (struct target_ops *self)
+{
+  return 0;
+}
+
 static void
 install_delegators (struct target_ops *ops)
 {
@@ -984,6 +1112,8 @@ install_delegators (struct target_ops *ops)
     ops->to_resume = delegate_resume;
   if (ops->to_wait == NULL)
     ops->to_wait = delegate_wait;
+  if (ops->to_fetch_registers == NULL)
+    ops->to_fetch_registers = delegate_fetch_registers;
   if (ops->to_store_registers == NULL)
     ops->to_store_registers = delegate_store_registers;
   if (ops->to_prepare_to_store == NULL)
@@ -996,6 +1126,8 @@ install_delegators (struct target_ops *ops)
     ops->to_remove_breakpoint = delegate_remove_breakpoint;
   if (ops->to_can_use_hw_breakpoint == NULL)
     ops->to_can_use_hw_breakpoint = delegate_can_use_hw_breakpoint;
+  if (ops->to_ranged_break_num_registers == NULL)
+    ops->to_ranged_break_num_registers = delegate_ranged_break_num_registers;
   if (ops->to_insert_hw_breakpoint == NULL)
     ops->to_insert_hw_breakpoint = delegate_insert_hw_breakpoint;
   if (ops->to_remove_hw_breakpoint == NULL)
@@ -1050,6 +1182,8 @@ install_delegators (struct target_ops *ops)
     ops->to_extra_thread_info = delegate_extra_thread_info;
   if (ops->to_thread_name == NULL)
     ops->to_thread_name = delegate_thread_name;
+  if (ops->to_stop == NULL)
+    ops->to_stop = delegate_stop;
   if (ops->to_rcmd == NULL)
     ops->to_rcmd = delegate_rcmd;
   if (ops->to_pid_to_exec_file == NULL)
@@ -1084,6 +1218,10 @@ install_delegators (struct target_ops *ops)
     ops->to_supports_enable_disable_tracepoint = delegate_supports_enable_disable_tracepoint;
   if (ops->to_supports_string_tracing == NULL)
     ops->to_supports_string_tracing = delegate_supports_string_tracing;
+  if (ops->to_supports_evaluation_of_breakpoint_conditions == NULL)
+    ops->to_supports_evaluation_of_breakpoint_conditions = delegate_supports_evaluation_of_breakpoint_conditions;
+  if (ops->to_can_run_breakpoint_commands == NULL)
+    ops->to_can_run_breakpoint_commands = delegate_can_run_breakpoint_commands;
   if (ops->to_thread_architecture == NULL)
     ops->to_thread_architecture = delegate_thread_architecture;
   if (ops->to_trace_init == NULL)
@@ -1136,8 +1274,18 @@ install_delegators (struct target_ops *ops)
     ops->to_set_permissions = delegate_set_permissions;
   if (ops->to_static_tracepoint_marker_at == NULL)
     ops->to_static_tracepoint_marker_at = delegate_static_tracepoint_marker_at;
+  if (ops->to_static_tracepoint_markers_by_strid == NULL)
+    ops->to_static_tracepoint_markers_by_strid = delegate_static_tracepoint_markers_by_strid;
+  if (ops->to_traceframe_info == NULL)
+    ops->to_traceframe_info = delegate_traceframe_info;
+  if (ops->to_use_agent == NULL)
+    ops->to_use_agent = delegate_use_agent;
+  if (ops->to_can_use_agent == NULL)
+    ops->to_can_use_agent = delegate_can_use_agent;
   if (ops->to_supports_btrace == NULL)
     ops->to_supports_btrace = delegate_supports_btrace;
+  if (ops->to_augmented_libraries_svr4_read == NULL)
+    ops->to_augmented_libraries_svr4_read = delegate_augmented_libraries_svr4_read;
 }
 
 static void
@@ -1148,12 +1296,14 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_detach = tdefault_detach;
   ops->to_resume = tdefault_resume;
   ops->to_wait = tdefault_wait;
+  ops->to_fetch_registers = tdefault_fetch_registers;
   ops->to_store_registers = tdefault_store_registers;
   ops->to_prepare_to_store = tdefault_prepare_to_store;
   ops->to_files_info = tdefault_files_info;
   ops->to_insert_breakpoint = memory_insert_breakpoint;
   ops->to_remove_breakpoint = memory_remove_breakpoint;
   ops->to_can_use_hw_breakpoint = tdefault_can_use_hw_breakpoint;
+  ops->to_ranged_break_num_registers = tdefault_ranged_break_num_registers;
   ops->to_insert_hw_breakpoint = tdefault_insert_hw_breakpoint;
   ops->to_remove_hw_breakpoint = tdefault_remove_hw_breakpoint;
   ops->to_remove_watchpoint = tdefault_remove_watchpoint;
@@ -1181,6 +1331,7 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_has_exited = tdefault_has_exited;
   ops->to_extra_thread_info = tdefault_extra_thread_info;
   ops->to_thread_name = tdefault_thread_name;
+  ops->to_stop = tdefault_stop;
   ops->to_rcmd = default_rcmd;
   ops->to_pid_to_exec_file = tdefault_pid_to_exec_file;
   ops->to_log_command = tdefault_log_command;
@@ -1198,6 +1349,8 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_supports_multi_process = tdefault_supports_multi_process;
   ops->to_supports_enable_disable_tracepoint = tdefault_supports_enable_disable_tracepoint;
   ops->to_supports_string_tracing = tdefault_supports_string_tracing;
+  ops->to_supports_evaluation_of_breakpoint_conditions = tdefault_supports_evaluation_of_breakpoint_conditions;
+  ops->to_can_run_breakpoint_commands = tdefault_can_run_breakpoint_commands;
   ops->to_thread_architecture = default_thread_architecture;
   ops->to_trace_init = tdefault_trace_init;
   ops->to_download_tracepoint = tdefault_download_tracepoint;
@@ -1224,5 +1377,10 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_get_tib_address = tdefault_get_tib_address;
   ops->to_set_permissions = tdefault_set_permissions;
   ops->to_static_tracepoint_marker_at = tdefault_static_tracepoint_marker_at;
+  ops->to_static_tracepoint_markers_by_strid = tdefault_static_tracepoint_markers_by_strid;
+  ops->to_traceframe_info = tdefault_traceframe_info;
+  ops->to_use_agent = tdefault_use_agent;
+  ops->to_can_use_agent = tdefault_can_use_agent;
   ops->to_supports_btrace = tdefault_supports_btrace;
+  ops->to_augmented_libraries_svr4_read = tdefault_augmented_libraries_svr4_read;
 }
diff --git a/gdb/target.c b/gdb/target.c
index 31be211..8d041b7 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -66,8 +66,6 @@ static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
 
 static int return_zero (void);
 
-static void *return_null (void);
-
 void target_ignore (void);
 
 static void target_command (char *, int);
@@ -657,7 +655,7 @@ update_current_target (void)
       /* Do not inherit to_pid_to_str.  */
       /* Do not inherit to_extra_thread_info.  */
       /* Do not inherit to_thread_name.  */
-      INHERIT (to_stop, t);
+      /* Do not inherit to_stop.  */
       /* Do not inherit to_xfer_partial.  */
       /* Do not inherit to_rcmd.  */
       /* Do not inherit to_pid_to_exec_file.  */
@@ -711,14 +709,15 @@ update_current_target (void)
       /* Do not inherit to_get_tib_address.  */
       /* Do not inherit to_set_permissions.  */
       /* Do not inherit to_static_tracepoint_marker_at.  */
-      INHERIT (to_static_tracepoint_markers_by_strid, t);
-      INHERIT (to_traceframe_info, t);
-      INHERIT (to_use_agent, t);
-      INHERIT (to_can_use_agent, t);
-      INHERIT (to_augmented_libraries_svr4_read, t);
+      /* Do not inherit to_static_tracepoint_markers_by_strid.  */
+      /* Do not inherit to_traceframe_info.  */
+      /* Do not inherit to_use_agent.  */
+      /* Do not inherit to_can_use_agent.  */
+      /* Do not inherit to_augmented_libraries_svr4_read.  */
       INHERIT (to_magic, t);
-      INHERIT (to_supports_evaluation_of_breakpoint_conditions, t);
-      INHERIT (to_can_run_breakpoint_commands, t);
+      /* Do not inherit
+	 to_supports_evaluation_of_breakpoint_conditions.  */
+      /* Do not inherit to_can_run_breakpoint_commands.  */
       /* Do not inherit to_memory_map.  */
       /* Do not inherit to_flash_erase.  */
       /* Do not inherit to_flash_done.  */
@@ -746,32 +745,7 @@ update_current_target (void)
   de_fault (to_can_run,
 	    (int (*) (struct target_ops *))
 	    return_zero);
-  de_fault (to_stop,
-	    (void (*) (struct target_ops *, ptid_t))
-	    target_ignore);
   current_target.to_read_description = NULL;
-  de_fault (to_static_tracepoint_markers_by_strid,
-	    (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *,
-						    const char *))
-	    tcomplain);
-  de_fault (to_traceframe_info,
-	    (struct traceframe_info * (*) (struct target_ops *))
-	    return_null);
-  de_fault (to_supports_evaluation_of_breakpoint_conditions,
-	    (int (*) (struct target_ops *))
-	    return_zero);
-  de_fault (to_can_run_breakpoint_commands,
-	    (int (*) (struct target_ops *))
-	    return_zero);
-  de_fault (to_use_agent,
-	    (int (*) (struct target_ops *, int))
-	    tcomplain);
-  de_fault (to_can_use_agent,
-	    (int (*) (struct target_ops *))
-	    return_zero);
-  de_fault (to_augmented_libraries_svr4_read,
-	    (int (*) (struct target_ops *))
-	    return_zero);
 
 #undef de_fault
 
@@ -3421,12 +3395,6 @@ return_zero (void)
   return 0;
 }
 
-static void *
-return_null (void)
-{
-  return 0;
-}
-
 /*
  * Find the next target down the stack from the specified target.
  */
@@ -3729,18 +3697,9 @@ debug_print_register (const char * func,
 void
 target_fetch_registers (struct regcache *regcache, int regno)
 {
-  struct target_ops *t;
-
-  for (t = current_target.beneath; t != NULL; t = t->beneath)
-    {
-      if (t->to_fetch_registers != NULL)
-	{
-	  t->to_fetch_registers (t, regcache, regno);
-	  if (targetdebug)
-	    debug_print_register ("target_fetch_registers", regcache, regno);
-	  return;
-	}
-    }
+  current_target.to_fetch_registers (&current_target, regcache, regno);
+  if (targetdebug)
+    debug_print_register ("target_fetch_registers", regcache, regno);
 }
 
 void
@@ -3879,13 +3838,7 @@ target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask)
 int
 target_ranged_break_num_registers (void)
 {
-  struct target_ops *t;
-
-  for (t = current_target.beneath; t != NULL; t = t->beneath)
-    if (t->to_ranged_break_num_registers != NULL)
-      return t->to_ranged_break_num_registers (t);
-
-  return -1;
+  return current_target.to_ranged_break_num_registers (&current_target);
 }
 
 /* See target.h.  */
diff --git a/gdb/target.h b/gdb/target.h
index 40b3e57..29b3b96 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -406,7 +406,8 @@ struct target_ops
     ptid_t (*to_wait) (struct target_ops *,
 		       ptid_t, struct target_waitstatus *, int)
       TARGET_DEFAULT_NORETURN (noprocess ());
-    void (*to_fetch_registers) (struct target_ops *, struct regcache *, int);
+    void (*to_fetch_registers) (struct target_ops *, struct regcache *, int)
+      TARGET_DEFAULT_IGNORE ();
     void (*to_store_registers) (struct target_ops *, struct regcache *, int)
       TARGET_DEFAULT_NORETURN (noprocess ());
     void (*to_prepare_to_store) (struct target_ops *, struct regcache *)
@@ -448,7 +449,8 @@ struct target_ops
       TARGET_DEFAULT_FUNC (memory_remove_breakpoint);
     int (*to_can_use_hw_breakpoint) (struct target_ops *, int, int, int)
       TARGET_DEFAULT_RETURN (0);
-    int (*to_ranged_break_num_registers) (struct target_ops *);
+    int (*to_ranged_break_num_registers) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (-1);
     int (*to_insert_hw_breakpoint) (struct target_ops *,
 				    struct gdbarch *, struct bp_target_info *)
       TARGET_DEFAULT_RETURN (-1);
@@ -546,7 +548,8 @@ struct target_ops
       TARGET_DEFAULT_RETURN (0);
     char *(*to_thread_name) (struct target_ops *, struct thread_info *)
       TARGET_DEFAULT_RETURN (0);
-    void (*to_stop) (struct target_ops *, ptid_t);
+    void (*to_stop) (struct target_ops *, ptid_t)
+      TARGET_DEFAULT_IGNORE ();
     void (*to_rcmd) (struct target_ops *,
 		     char *command, struct ui_file *output)
       TARGET_DEFAULT_FUNC (default_rcmd);
@@ -717,11 +720,13 @@ struct target_ops
 
     /* Does this target support evaluation of breakpoint conditions on its
        end?  */
-    int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *);
+    int (*to_supports_evaluation_of_breakpoint_conditions) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (0);
 
     /* Does this target support evaluation of breakpoint commands on its
        end?  */
-    int (*to_can_run_breakpoint_commands) (struct target_ops *);
+    int (*to_can_run_breakpoint_commands) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (0);
 
     /* Determine current architecture of thread PTID.
 
@@ -929,8 +934,8 @@ struct target_ops
 
     /* Return a vector of all tracepoints markers string id ID, or all
        markers if ID is NULL.  */
-    VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid)
-      (struct target_ops *, const char *id);
+    VEC(static_tracepoint_marker_p) *(*to_static_tracepoint_markers_by_strid) (struct target_ops *, const char *id)
+      TARGET_DEFAULT_NORETURN (tcomplain ());
 
     /* Return a traceframe info object describing the current
        traceframe's contents.  If the target doesn't support
@@ -945,14 +950,17 @@ struct target_ops
        is available in the read-only sections.  This method should not
        cache data; higher layers take care of caching, invalidating,
        and re-fetching when necessary.  */
-    struct traceframe_info *(*to_traceframe_info) (struct target_ops *);
+    struct traceframe_info *(*to_traceframe_info) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (0);
 
     /* Ask the target to use or not to use agent according to USE.  Return 1
        successful, 0 otherwise.  */
-    int (*to_use_agent) (struct target_ops *, int use);
+    int (*to_use_agent) (struct target_ops *, int use)
+      TARGET_DEFAULT_NORETURN (tcomplain ());
 
     /* Is the target able to use agent in current state?  */
-    int (*to_can_use_agent) (struct target_ops *);
+    int (*to_can_use_agent) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (0);
 
     /* Check whether the target supports branch tracing.  */
     int (*to_supports_btrace) (struct target_ops *)
@@ -1044,7 +1052,8 @@ struct target_ops
 
     /* Nonzero if TARGET_OBJECT_LIBRARIES_SVR4 may be read with a
        non-empty annex.  */
-    int (*to_augmented_libraries_svr4_read) (struct target_ops *);
+    int (*to_augmented_libraries_svr4_read) (struct target_ops *)
+      TARGET_DEFAULT_RETURN (0);
 
     /* Those unwinders are tried before any other arch unwinders.  Use NULL if
        it is not used.  */
-- 
1.8.1.4