convert to_auxv_parse

2014-02-19  Tom Tromey  <tromey@redhat.com>

	* auxv.c (default_auxv_parse): No longer static.
	(target_auxv_parse): Unconditionally delegate.
	* auxv.h (default_auxv_parse): Declare.
	* target-delegates.c: Rebuild.
	* target.c: Include auxv.h.
	* target.h (struct target_ops) <to_auxv_parse>: Use
	TARGET_DEFAULT_FUNC.

gdb/ChangeLog

@@ -1,3 +1,13 @@
+2014-02-19  Tom Tromey  <tromey@redhat.com>
+
+	* auxv.c (default_auxv_parse): No longer static.
+	(target_auxv_parse): Unconditionally delegate.
+	* auxv.h (default_auxv_parse): Declare.
+	* target-delegates.c: Rebuild.
+	* target.c: Include auxv.h.
+	* target.h (struct target_ops) <to_auxv_parse>: Use
+	TARGET_DEFAULT_FUNC.
+
 2014-02-19  Tom Tromey  <tromey@redhat.com>
 
 	* target-delegates.c: Rebuild.

gdb/auxv.c

@@ -254,7 +254,7 @@ memory_xfer_auxv (struct target_ops *ops,
    Return 0 if *READPTR is already at the end of the buffer.
    Return -1 if there is insufficient buffer for a whole entry.
    Return 1 if an entry was read into *TYPEP and *VALP.  */
-static int
+int
 default_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
 		   gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
 {
@@ -286,13 +286,8 @@ int
 target_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
                   gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
 {
-  struct target_ops *t;
-
-  for (t = ops; t != NULL; t = t->beneath)
-    if (t->to_auxv_parse != NULL)
-      return t->to_auxv_parse (t, readptr, endptr, typep, valp);
-  
-  return default_auxv_parse (ops, readptr, endptr, typep, valp);
+  return current_target.to_auxv_parse (&current_target, readptr, endptr,
+				       typep, valp);
 }
 
 

gdb/auxv.h

@@ -24,6 +24,13 @@
 
 /* See "include/elf/common.h" for the definition of valid AT_* values.  */
 
+/* The default implementation of to_auxv_parse, used by the target
+   stack.  */
+
+extern int default_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
+			       gdb_byte *endptr, CORE_ADDR *typep,
+			       CORE_ADDR *valp);
+
 /* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
    Return 0 if *READPTR is already at the end of the buffer.
    Return -1 if there is insufficient buffer for a whole entry.

gdb/target-delegates.c

@@ -782,6 +782,13 @@ delegate_get_ada_task_ptid (struct target_ops *self, long arg1, long arg2)
   return self->to_get_ada_task_ptid (self, arg1, arg2);
 }
 
+static int
+delegate_auxv_parse (struct target_ops *self, gdb_byte **arg1, gdb_byte *arg2, CORE_ADDR *arg3, CORE_ADDR *arg4)
+{
+  self = self->beneath;
+  return self->to_auxv_parse (self, arg1, arg2, arg3, arg4);
+}
+
 static int
 delegate_can_execute_reverse (struct target_ops *self)
 {
@@ -1594,6 +1601,8 @@ install_delegators (struct target_ops *ops)
     ops->to_flash_done = delegate_flash_done;
   if (ops->to_get_ada_task_ptid == NULL)
     ops->to_get_ada_task_ptid = delegate_get_ada_task_ptid;
+  if (ops->to_auxv_parse == NULL)
+    ops->to_auxv_parse = delegate_auxv_parse;
   if (ops->to_can_execute_reverse == NULL)
     ops->to_can_execute_reverse = delegate_can_execute_reverse;
   if (ops->to_execution_direction == NULL)
@@ -1773,6 +1782,7 @@ install_dummy_methods (struct target_ops *ops)
   ops->to_flash_erase = tdefault_flash_erase;
   ops->to_flash_done = tdefault_flash_done;
   ops->to_get_ada_task_ptid = default_get_ada_task_ptid;
+  ops->to_auxv_parse = default_auxv_parse;
   ops->to_can_execute_reverse = tdefault_can_execute_reverse;
   ops->to_execution_direction = default_execution_direction;
   ops->to_supports_multi_process = tdefault_supports_multi_process;

gdb/target.c

@@ -44,6 +44,7 @@
 #include "tracepoint.h"
 #include "gdb/fileio.h"
 #include "agent.h"
+#include "auxv.h"
 
 static void target_info (char *, int);
 

gdb/target.h

@@ -706,7 +706,8 @@ struct target_ops
        Return -1 if there is insufficient buffer for a whole entry.
        Return 1 if an entry was read into *TYPEP and *VALP.  */
     int (*to_auxv_parse) (struct target_ops *ops, gdb_byte **readptr,
-                         gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp);
+                         gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
+      TARGET_DEFAULT_FUNC (default_auxv_parse);
 
     /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
        sequence of bytes in PATTERN with length PATTERN_LEN.