/* Definitions for values of C expressions, for GDB.
- Copyright (C) 1986-2019 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
extern void set_value_bitsize (struct value *, LONGEST bit);
/* Only used for bitfields; position of start of field. For
- gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
- gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
+ little-endian targets, it is the position of the LSB. For
+ big-endian targets, it is the position of the MSB. */
extern LONGEST value_bitpos (const struct value *);
extern void set_value_bitpos (struct value *, LONGEST bit);
Optimized-out contents are equal to optimized-out contents, and are
not equal to non-optimized-out contents.
- Unavailable contente are equal to unavailable contents, and are not
+ Unavailable contents are equal to unavailable contents, and are not
equal to non-unavailable contents.
For example, if 'x's represent an unavailable byte, and 'V' and 'Z'
extern LONGEST unpack_field_as_long (struct type *type,
const gdb_byte *valaddr,
int fieldno);
+
+/* Unpack a bitfield of the specified FIELD_TYPE, from the object at
+ VALADDR, and store the result in *RESULT.
+ The bitfield starts at BITPOS bits and contains BITSIZE bits; if
+ BITSIZE is zero, then the length is taken from FIELD_TYPE.
+
+ Extracting bits depends on endianness of the machine. Compute the
+ number of least significant bits to discard. For big endian machines,
+ we compute the total number of bits in the anonymous object, subtract
+ off the bit count from the MSB of the object to the MSB of the
+ bitfield, then the size of the bitfield, which leaves the LSB discard
+ count. For little endian machines, the discard count is simply the
+ number of bits from the LSB of the anonymous object to the LSB of the
+ bitfield.
+
+ If the field is signed, we also do sign extension. */
+
+extern LONGEST unpack_bits_as_long (struct type *field_type,
+ const gdb_byte *valaddr,
+ LONGEST bitpos, LONGEST bitsize);
+
extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
LONGEST embedded_offset, int fieldno,
const struct value *val, LONGEST *result);
const struct block *var_block,
struct frame_info *frame);
-extern struct value *default_read_var_value (struct symbol *var,
- const struct block *var_block,
- struct frame_info *frame);
-
extern struct value *allocate_value (struct type *type);
extern struct value *allocate_value_lazy (struct type *type);
extern void value_contents_copy (struct value *dst, LONGEST dst_offset,
extern std::vector<value_ref_ptr> value_release_to_mark
(const struct value *mark);
-extern void val_print (struct type *type,
- LONGEST embedded_offset, CORE_ADDR address,
- struct ui_file *stream, int recurse,
- struct value *val,
- const struct value_print_options *options,
- const struct language_defn *language);
-
extern void common_val_print (struct value *val,
struct ui_file *stream, int recurse,
const struct value_print_options *options,
extern struct value *value_slice (struct value *, int, int);
+/* Create a complex number. The type is the complex type; the values
+ are cast to the underlying scalar type before the complex number is
+ created. */
+
extern struct value *value_literal_complex (struct value *, struct value *,
struct type *);
+/* Return the real part of a complex value. */
+
+extern struct value *value_real_part (struct value *value);
+
+/* Return the imaginary part of a complex value. */
+
+extern struct value *value_imaginary_part (struct value *value);
+
extern struct value *find_function_in_inferior (const char *,
struct objfile **);
int argc,
struct value **argv);
-void add_internal_function (const char *name, const char *doc,
- internal_function_fn handler,
- void *cookie);
+/* Add a new internal function. NAME is the name of the function; DOC
+ is a documentation string describing the function. HANDLER is
+ called when the function is invoked. COOKIE is an arbitrary
+ pointer which is passed to HANDLER and is intended for "user
+ data". */
+
+extern void add_internal_function (const char *name, const char *doc,
+ internal_function_fn handler,
+ void *cookie);
+
+/* This overload takes an allocated documentation string. */
+
+extern void add_internal_function (gdb::unique_xmalloc_ptr<char> &&name,
+ gdb::unique_xmalloc_ptr<char> &&doc,
+ internal_function_fn handler,
+ void *cookie);
struct value *call_internal_function (struct gdbarch *gdbarch,
const struct language_defn *language,
extern struct value *call_xmethod (struct value *method,
gdb::array_view<value *> argv);
-/* Given a discriminated union type and some corresponding value
- contents, this will return the field index of the currently active
- variant. This will throw an exception if no active variant can be
- found. */
-
-extern int value_union_variant (struct type *union_type,
- const gdb_byte *contents);
-
/* Destroy the values currently allocated. This is called when GDB is
exiting (e.g., on quit_force). */
extern void finalize_values ();
projects / deliverable / binutils-gdb.git / blobdiff