Add base 'enable/disable invalid location range' tests

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

diff --git a/gdb/value.h b/gdb/value.h
index 281b5a8c8ac6591a8bbf5cf0582799b6f69135fa..b1b8c6ded6263f6f3d8e601b6c3addf346026b61 100644 (file)
--- a/gdb/value.h
+++ b/gdb/value.h
@@ -1,6 +1,6 @@
 /* Definitions for values of C expressions, for GDB.
 
-   Copyright (C) 1986-2016 Free Software Foundation, Inc.
+   Copyright (C) 1986-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,7 +20,6 @@
 #if !defined (VALUE_H)
 #define VALUE_H 1
 
-#include "doublest.h"
 #include "frame.h"             /* For struct frame_id.  */
 
 struct block;
@@ -448,7 +447,7 @@ extern struct frame_id *deprecated_value_next_frame_id_hack (struct value *);
 #define VALUE_FRAME_ID(val) (get_prev_frame_id_by_id (VALUE_NEXT_FRAME_ID (val)))
 
 /* Register number if the value is from a register.  */
-extern short *deprecated_value_regnum_hack (struct value *);
+extern int *deprecated_value_regnum_hack (struct value *);
 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
 
 /* Return value after lval_funcs->coerce_ref (after check_typedef).  Return
@@ -581,12 +580,11 @@ extern int value_contents_eq (const struct value *val1, LONGEST offset1,
 
 /* Read LENGTH addressable memory units starting at MEMADDR into BUFFER,
    which is (or will be copied to) VAL's contents buffer offset by
-   EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
-   Marks value contents ranges as unavailable if the corresponding
-   memory is likewise unavailable.  STACK indicates whether the memory
-   is known to be stack memory.  */
+   BIT_OFFSET bits.  Marks value contents ranges as unavailable if
+   the corresponding memory is likewise unavailable.  STACK indicates
+   whether the memory is known to be stack memory.  */
 
-extern void read_value_memory (struct value *val, LONGEST embedded_offset,
+extern void read_value_memory (struct value *val, LONGEST bit_offset,
                               int stack, CORE_ADDR memaddr,
                               gdb_byte *buffer, size_t length);
 
@@ -609,13 +607,14 @@ extern int print_address_demangle (const struct value_print_options *,
                                   struct gdbarch *, CORE_ADDR,
                                   struct ui_file *, int);
 
+/* Returns true if VAL is of floating-point type.  In addition,
+   throws an error if the value is an invalid floating-point value.  */
+extern bool is_floating_value (struct value *val);
+
 extern LONGEST value_as_long (struct value *val);
-extern DOUBLEST value_as_double (struct value *val);
 extern CORE_ADDR value_as_address (struct value *val);
 
 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
-extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
-                              int *invp);
 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
 
 extern LONGEST unpack_field_as_long (struct type *type,
@@ -641,9 +640,6 @@ extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
 extern struct value *value_from_longest (struct type *type, LONGEST num);
 extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
-extern struct value *value_from_double (struct type *type, DOUBLEST num);
-extern struct value *value_from_decfloat (struct type *type,
-                                         const gdb_byte *decbytes);
 extern struct value *value_from_history_ref (const char *, const char **);
 extern struct value *value_from_component (struct value *, struct type *,
                                           LONGEST);
@@ -714,6 +710,42 @@ extern struct value *value_mark (void);
 
 extern void value_free_to_mark (const struct value *mark);
 
+/* A helper class that uses value_mark at construction time and calls
+   value_free_to_mark in the destructor.  This is used to clear out
+   temporary values created during the lifetime of this object.  */
+class scoped_value_mark
+{
+ public:
+
+  scoped_value_mark ()
+    : m_value (value_mark ())
+  {
+  }
+
+  ~scoped_value_mark ()
+  {
+    free_to_mark ();
+  }
+
+  scoped_value_mark (scoped_value_mark &&other) = default;
+
+  DISABLE_COPY_AND_ASSIGN (scoped_value_mark);
+
+  /* Free the values currently on the value stack.  */
+  void free_to_mark ()
+  {
+    if (m_value != NULL)
+      {
+       value_free_to_mark (m_value);
+       m_value = NULL;
+      }
+  }
+
+ private:
+
+  const struct value *m_value;
+};
+
 extern struct value *value_cstring (const char *ptr, ssize_t len,
                                    struct type *char_type);
 extern struct value *value_string (const char *ptr, ssize_t len,
@@ -743,7 +775,7 @@ extern struct value *value_ind (struct value *arg1);
 
 extern struct value *value_addr (struct value *arg1);
 
-extern struct value *value_ref (struct value *arg1);
+extern struct value *value_ref (struct value *arg1, enum type_code refcode);
 
 extern struct value *value_assign (struct value *toval,
                                   struct value *fromval);
@@ -896,7 +928,8 @@ extern struct internalvar *lookup_only_internalvar (const char *name);
 
 extern struct internalvar *create_internalvar (const char *name);
 
-extern VEC (char_ptr) *complete_internalvar (const char *name);
+extern void complete_internalvar (completion_tracker &tracker,
+                                 const char *name);
 
 /* An internalvar can be dynamically computed by supplying a vector of
    function pointers to perform various operations.  */
@@ -986,6 +1019,21 @@ extern void value_incref (struct value *val);
 
 extern void value_free (struct value *val);
 
+/* A free policy class to interface std::unique_ptr with
+   value_free.  */
+
+struct value_deleter
+{
+  void operator() (struct value *value) const
+  {
+    value_free (value);
+  }
+};
+
+/* A unique pointer to a struct value.  */
+
+typedef std::unique_ptr<struct value, value_deleter> gdb_value_up;
+
 extern void free_all_values (void);
 
 extern void free_value_chain (struct value *v);
@@ -1014,9 +1062,6 @@ extern void print_longest (struct ui_file *stream, int format,
 extern void print_floating (const gdb_byte *valaddr, struct type *type,
                            struct ui_file *stream);
 
-extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
-                                   struct ui_file *stream);
-
 extern void value_print (struct value *val, struct ui_file *stream,
                         const struct value_print_options *options);