PR gdb/17960 Internal error: tracker != NULL when completing on file:function

[deliverable/binutils-gdb.git] / gdb / dwarf2loc.h

diff --git a/gdb/dwarf2loc.h b/gdb/dwarf2loc.h
index e63b35bb8c1270da1abd9a023b941616712077e1..f3630ac0b273c6853115c8956a9240f4d3f5ec8d 100644 (file)
--- a/gdb/dwarf2loc.h
+++ b/gdb/dwarf2loc.h
@@ -1,6 +1,6 @@
 /* DWARF 2 location expression support for GDB.
 
-   Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   Copyright (C) 2003-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -102,13 +102,33 @@ struct value *dwarf2_evaluate_loc_desc (struct type *type,
                                        size_t size,
                                        struct dwarf2_per_cu_data *per_cu);
 
-/* Converts a dynamic property into a static one.  ADDRESS is the address
-   of the object currently being evaluated and might be nedded.
+/* A chain of addresses that might be needed to resolve a dynamic
+   property.  */
+
+struct property_addr_info
+{
+  /* The type of the object whose dynamic properties, if any, are
+     being resolved.  */
+  struct type *type;
+
+  /* If not NULL, a buffer containing the object's value.  */
+  const gdb_byte *valaddr;
+
+  /* The address of that object.  */
+  CORE_ADDR addr;
+
+  /* If not NULL, a pointer to the info for the object containing
+     the object described by this node.  */
+  struct property_addr_info *next;
+};
+
+/* Converts a dynamic property into a static one.  ADDR_STACK is the stack
+   of addresses that might be needed to evaluate the property.
    Returns 1 if PROP could be converted and the static value is passed back
    into VALUE, otherwise returns 0.  */
 
 int dwarf2_evaluate_property (const struct dynamic_prop *prop,
-                             CORE_ADDR address,
+                             struct property_addr_info *addr_stack,
                              CORE_ADDR *value);
 
 /* A helper for the compiler interface that compiles a single dynamic
@@ -177,6 +197,23 @@ struct dwarf2_loclist_baton
   unsigned char from_dwo;
 };
 
+/* The baton used when a dynamic property is an offset to a parent
+   type.  This can be used, for instance, then the bound of an array
+   inside a record is determined by the value of another field inside
+   that record.  */
+
+struct dwarf2_offset_baton
+{
+  /* The offset from the parent type where the value of the property
+     is stored.  In the example provided above, this would be the offset
+     of the field being used as the array bound.  */
+  LONGEST offset;
+
+  /* The type of the object whose property is dynamic.  In the example
+     provided above, this would the the array's index type.  */
+  struct type *type;
+};
+
 /* A dynamic property is either expressed as a single location expression
    or a location list.  If the property is an indirection, pointing to
    another die, keep track of the targeted type in REFERENCED_TYPE.  */
@@ -184,7 +221,7 @@ struct dwarf2_loclist_baton
 struct dwarf2_property_baton
 {
   /* If the property is an indirection, we need to evaluate the location
-     LOCEXPR or LOCLIST in the context of the type REFERENCED_TYPE.
+     in the context of the type REFERENCED_TYPE.
      If NULL, the location is the actual value of the property.  */
   struct type *referenced_type;
   union
@@ -194,6 +231,9 @@ struct dwarf2_property_baton
 
     /* Location list to be evaluated in the context of REFERENCED_TYPE.  */
     struct dwarf2_loclist_baton loclist;
+
+    /* The location is an offset to REFERENCED_TYPE.  */
+    struct dwarf2_offset_baton offset_info;
   };
 };