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b5b08fb4ff
PR python/15464
PR python/16113
* valops.c (value_struct_elt_bitpos): New function
* py-type.c (convert_field): Set 'name' attribute of a gdb.Field
object to 'None' if the field name is an empty string ("").
* python/py-value.c (valpy_getitem): Use 'bitpos' and 'type'
attribute to look for a field when 'name' is 'None'.
(get_field_type): New function
testsuite/
* gdb.python/py-type.c: Enhance test case.
* gdb.python/py-value-cc.cc: Likewise
* gdb.python/py-type.exp: Add new tests.
* gdb.python/py-value-cc.exp: Likewise
1014 lines
38 KiB
C++
1014 lines
38 KiB
C++
/* Definitions for values of C expressions, for GDB.
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Copyright (C) 1986-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
|
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (VALUE_H)
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#define VALUE_H 1
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#include "doublest.h"
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#include "frame.h" /* For struct frame_id. */
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struct block;
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struct expression;
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struct regcache;
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struct symbol;
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struct type;
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struct ui_file;
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struct language_defn;
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struct value_print_options;
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/* The structure which defines the type of a value. It should never
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be possible for a program lval value to survive over a call to the
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inferior (i.e. to be put into the history list or an internal
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variable). */
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struct value;
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/* Values are stored in a chain, so that they can be deleted easily
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over calls to the inferior. Values assigned to internal variables,
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put into the value history or exposed to Python are taken off this
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list. */
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struct value *value_next (struct value *);
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/* Type of the value. */
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extern struct type *value_type (const struct value *);
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/* This is being used to change the type of an existing value, that
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code should instead be creating a new value with the changed type
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(but possibly shared content). */
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extern void deprecated_set_value_type (struct value *value,
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struct type *type);
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/* Only used for bitfields; number of bits contained in them. */
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extern int value_bitsize (const struct value *);
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extern void set_value_bitsize (struct value *, int bit);
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/* Only used for bitfields; position of start of field. For
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gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
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gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
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extern int value_bitpos (const struct value *);
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extern void set_value_bitpos (struct value *, int bit);
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/* Only used for bitfields; the containing value. This allows a
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single read from the target when displaying multiple
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bitfields. */
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struct value *value_parent (struct value *);
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extern void set_value_parent (struct value *value, struct value *parent);
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/* Describes offset of a value within lval of a structure in bytes.
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If lval == lval_memory, this is an offset to the address. If lval
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== lval_register, this is a further offset from location.address
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within the registers structure. Note also the member
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embedded_offset below. */
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extern int value_offset (const struct value *);
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extern void set_value_offset (struct value *, int offset);
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/* The comment from "struct value" reads: ``Is it modifiable? Only
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relevant if lval != not_lval.''. Shouldn't the value instead be
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not_lval and be done with it? */
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extern int deprecated_value_modifiable (struct value *value);
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/* If a value represents a C++ object, then the `type' field gives the
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object's compile-time type. If the object actually belongs to some
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class derived from `type', perhaps with other base classes and
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additional members, then `type' is just a subobject of the real
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thing, and the full object is probably larger than `type' would
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suggest.
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If `type' is a dynamic class (i.e. one with a vtable), then GDB can
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actually determine the object's run-time type by looking at the
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run-time type information in the vtable. When this information is
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available, we may elect to read in the entire object, for several
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reasons:
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- When printing the value, the user would probably rather see the
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full object, not just the limited portion apparent from the
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compile-time type.
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- If `type' has virtual base classes, then even printing `type'
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alone may require reaching outside the `type' portion of the
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object to wherever the virtual base class has been stored.
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When we store the entire object, `enclosing_type' is the run-time
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type -- the complete object -- and `embedded_offset' is the offset
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of `type' within that larger type, in bytes. The value_contents()
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macro takes `embedded_offset' into account, so most GDB code
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continues to see the `type' portion of the value, just as the
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inferior would.
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If `type' is a pointer to an object, then `enclosing_type' is a
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pointer to the object's run-time type, and `pointed_to_offset' is
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the offset in bytes from the full object to the pointed-to object
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-- that is, the value `embedded_offset' would have if we followed
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the pointer and fetched the complete object. (I don't really see
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the point. Why not just determine the run-time type when you
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indirect, and avoid the special case? The contents don't matter
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until you indirect anyway.)
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If we're not doing anything fancy, `enclosing_type' is equal to
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`type', and `embedded_offset' is zero, so everything works
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normally. */
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extern struct type *value_enclosing_type (struct value *);
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extern void set_value_enclosing_type (struct value *val,
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struct type *new_type);
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/* Returns value_type or value_enclosing_type depending on
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value_print_options.objectprint.
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If RESOLVE_SIMPLE_TYPES is 0 the enclosing type will be resolved
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only for pointers and references, else it will be returned
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for all the types (e.g. structures). This option is useful
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to prevent retrieving enclosing type for the base classes fields.
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REAL_TYPE_FOUND is used to inform whether the real type was found
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(or just static type was used). The NULL may be passed if it is not
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necessary. */
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extern struct type *value_actual_type (struct value *value,
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int resolve_simple_types,
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int *real_type_found);
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extern int value_pointed_to_offset (struct value *value);
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extern void set_value_pointed_to_offset (struct value *value, int val);
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extern int value_embedded_offset (struct value *value);
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extern void set_value_embedded_offset (struct value *value, int val);
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/* For lval_computed values, this structure holds functions used to
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retrieve and set the value (or portions of the value).
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For each function, 'V' is the 'this' pointer: an lval_funcs
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function F may always assume that the V it receives is an
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lval_computed value, and has F in the appropriate slot of its
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lval_funcs structure. */
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struct lval_funcs
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{
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/* Fill in VALUE's contents. This is used to "un-lazy" values. If
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a problem arises in obtaining VALUE's bits, this function should
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call 'error'. If it is NULL value_fetch_lazy on "un-lazy"
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non-optimized-out value is an internal error. */
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void (*read) (struct value *v);
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/* Handle an assignment TOVAL = FROMVAL by writing the value of
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FROMVAL to TOVAL's location. The contents of TOVAL have not yet
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been updated. If a problem arises in doing so, this function
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should call 'error'. If it is NULL such TOVAL assignment is an error as
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TOVAL is not considered as an lvalue. */
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void (*write) (struct value *toval, struct value *fromval);
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/* Check the validity of some bits in VALUE. This should return 1
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if all the bits starting at OFFSET and extending for LENGTH bits
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are valid, or 0 if any bit is invalid. */
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int (*check_validity) (const struct value *value, int offset, int length);
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/* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */
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int (*check_any_valid) (const struct value *value);
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/* If non-NULL, this is used to implement pointer indirection for
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this value. This method may return NULL, in which case value_ind
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will fall back to ordinary indirection. */
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struct value *(*indirect) (struct value *value);
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/* If non-NULL, this is used to implement reference resolving for
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this value. This method may return NULL, in which case coerce_ref
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will fall back to ordinary references resolving. */
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struct value *(*coerce_ref) (const struct value *value);
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/* If non-NULL, this is used to determine whether the indicated bits
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of VALUE are a synthetic pointer. */
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int (*check_synthetic_pointer) (const struct value *value,
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int offset, int length);
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/* Return a duplicate of VALUE's closure, for use in a new value.
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This may simply return the same closure, if VALUE's is
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reference-counted or statically allocated.
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This may be NULL, in which case VALUE's closure is re-used in the
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new value. */
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void *(*copy_closure) (const struct value *v);
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/* Drop VALUE's reference to its closure. Maybe this frees the
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closure; maybe this decrements a reference count; maybe the
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closure is statically allocated and this does nothing.
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This may be NULL, in which case no action is taken to free
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VALUE's closure. */
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void (*free_closure) (struct value *v);
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};
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/* Create a computed lvalue, with type TYPE, function pointers FUNCS,
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and closure CLOSURE. */
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extern struct value *allocate_computed_value (struct type *type,
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const struct lval_funcs *funcs,
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void *closure);
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/* Helper function to check the validity of some bits of a value.
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If TYPE represents some aggregate type (e.g., a structure), return 1.
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Otherwise, any of the bytes starting at OFFSET and extending for
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TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and
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return 0. The checking is done using FUNCS.
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Otherwise, return 1. */
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extern int valprint_check_validity (struct ui_file *stream, struct type *type,
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int embedded_offset,
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const struct value *val);
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extern struct value *allocate_optimized_out_value (struct type *type);
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/* If VALUE is lval_computed, return its lval_funcs structure. */
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extern const struct lval_funcs *value_computed_funcs (const struct value *);
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/* If VALUE is lval_computed, return its closure. The meaning of the
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returned value depends on the functions VALUE uses. */
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extern void *value_computed_closure (const struct value *value);
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/* If zero, contents of this value are in the contents field. If
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nonzero, contents are in inferior. If the lval field is lval_memory,
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the contents are in inferior memory at location.address plus offset.
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The lval field may also be lval_register.
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WARNING: This field is used by the code which handles watchpoints
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(see breakpoint.c) to decide whether a particular value can be
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watched by hardware watchpoints. If the lazy flag is set for some
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member of a value chain, it is assumed that this member of the
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chain doesn't need to be watched as part of watching the value
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itself. This is how GDB avoids watching the entire struct or array
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when the user wants to watch a single struct member or array
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element. If you ever change the way lazy flag is set and reset, be
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sure to consider this use as well! */
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extern int value_lazy (struct value *);
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extern void set_value_lazy (struct value *value, int val);
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extern int value_stack (struct value *);
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extern void set_value_stack (struct value *value, int val);
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/* Throw an error complaining that the value has been optimized
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out. */
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extern void error_value_optimized_out (void);
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/* value_contents() and value_contents_raw() both return the address
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of the gdb buffer used to hold a copy of the contents of the lval.
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value_contents() is used when the contents of the buffer are needed
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-- it uses value_fetch_lazy() to load the buffer from the process
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being debugged if it hasn't already been loaded
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(value_contents_writeable() is used when a writeable but fetched
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buffer is required).. value_contents_raw() is used when data is
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being stored into the buffer, or when it is certain that the
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contents of the buffer are valid.
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Note: The contents pointer is adjusted by the offset required to
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get to the real subobject, if the value happens to represent
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something embedded in a larger run-time object. */
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extern gdb_byte *value_contents_raw (struct value *);
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/* Actual contents of the value. For use of this value; setting it
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uses the stuff above. Not valid if lazy is nonzero. Target
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byte-order. We force it to be aligned properly for any possible
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value. Note that a value therefore extends beyond what is
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declared here. */
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extern const gdb_byte *value_contents (struct value *);
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extern gdb_byte *value_contents_writeable (struct value *);
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/* The ALL variants of the above two macros do not adjust the returned
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pointer by the embedded_offset value. */
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extern gdb_byte *value_contents_all_raw (struct value *);
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extern const gdb_byte *value_contents_all (struct value *);
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/* Like value_contents_all, but does not require that the returned
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bits be valid. This should only be used in situations where you
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plan to check the validity manually. */
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extern const gdb_byte *value_contents_for_printing (struct value *value);
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/* Like value_contents_for_printing, but accepts a constant value
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pointer. Unlike value_contents_for_printing however, the pointed
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value must _not_ be lazy. */
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extern const gdb_byte *
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value_contents_for_printing_const (const struct value *value);
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extern int value_fetch_lazy (struct value *val);
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extern int value_contents_equal (struct value *val1, struct value *val2);
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/* If nonzero, this is the value of a variable which does not actually
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exist in the program, at least partially. If the value is lazy,
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this may fetch it now. */
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extern int value_optimized_out (struct value *value);
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extern void set_value_optimized_out (struct value *value, int val);
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/* Like value_optimized_out, but don't fetch the value even if it is
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lazy. Mainly useful for constructing other values using VALUE as
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template. */
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extern int value_optimized_out_const (const struct value *value);
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/* Like value_optimized_out, but return false if any bit in the object
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is valid. */
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extern int value_entirely_optimized_out (const struct value *value);
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/* Set or return field indicating whether a variable is initialized or
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not, based on debugging information supplied by the compiler.
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1 = initialized; 0 = uninitialized. */
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extern int value_initialized (struct value *);
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extern void set_value_initialized (struct value *, int);
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/* Set COMPONENT's location as appropriate for a component of WHOLE
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--- regardless of what kind of lvalue WHOLE is. */
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extern void set_value_component_location (struct value *component,
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const struct value *whole);
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/* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
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single value might have multiple LVALs), this hacked interface is
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limited to just the first PIECE. Expect further change. */
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/* Type of value; either not an lval, or one of the various different
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possible kinds of lval. */
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extern enum lval_type *deprecated_value_lval_hack (struct value *);
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#define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
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||
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||
/* Like VALUE_LVAL, except the parameter can be const. */
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extern enum lval_type value_lval_const (const struct value *value);
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/* If lval == lval_memory, return the address in the inferior. If
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lval == lval_register, return the byte offset into the registers
|
||
structure. Otherwise, return 0. The returned address
|
||
includes the offset, if any. */
|
||
extern CORE_ADDR value_address (const struct value *);
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||
|
||
/* Like value_address, except the result does not include value's
|
||
offset. */
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||
extern CORE_ADDR value_raw_address (struct value *);
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||
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||
/* Set the address of a value. */
|
||
extern void set_value_address (struct value *, CORE_ADDR);
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||
|
||
/* Pointer to internal variable. */
|
||
extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
|
||
#define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
|
||
|
||
/* Frame register value is relative to. This will be described in the
|
||
lval enum above as "lval_register". */
|
||
extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
|
||
#define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
|
||
|
||
/* Register number if the value is from a register. */
|
||
extern short *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
|
||
NULL if lval_funcs->coerce_ref is not applicable for whatever reason. */
|
||
|
||
extern struct value *coerce_ref_if_computed (const struct value *arg);
|
||
|
||
/* Setup a new value type and enclosing value type for dereferenced value VALUE.
|
||
ENC_TYPE is the new enclosing type that should be set. ORIGINAL_TYPE and
|
||
ORIGINAL_VAL are the type and value of the original reference or pointer.
|
||
|
||
Note, that VALUE is modified by this function.
|
||
|
||
It is a common implementation for coerce_ref and value_ind. */
|
||
|
||
extern struct value * readjust_indirect_value_type (struct value *value,
|
||
struct type *enc_type,
|
||
struct type *original_type,
|
||
struct value *original_val);
|
||
|
||
/* Convert a REF to the object referenced. */
|
||
|
||
extern struct value *coerce_ref (struct value *value);
|
||
|
||
/* If ARG is an array, convert it to a pointer.
|
||
If ARG is a function, convert it to a function pointer.
|
||
|
||
References are dereferenced. */
|
||
|
||
extern struct value *coerce_array (struct value *value);
|
||
|
||
/* Given a value, determine whether the bits starting at OFFSET and
|
||
extending for LENGTH bits are valid. This returns nonzero if all
|
||
bits in the given range are valid, zero if any bit is invalid. */
|
||
|
||
extern int value_bits_valid (const struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Given a value, determine whether the bits starting at OFFSET and
|
||
extending for LENGTH bits are a synthetic pointer. */
|
||
|
||
extern int value_bits_synthetic_pointer (const struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Given a value, determine whether the contents bytes starting at
|
||
OFFSET and extending for LENGTH bytes are available. This returns
|
||
nonzero if all bytes in the given range are available, zero if any
|
||
byte is unavailable. */
|
||
|
||
extern int value_bytes_available (const struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Given a value, determine whether the contents bits starting at
|
||
OFFSET and extending for LENGTH bits are available. This returns
|
||
nonzero if all bits in the given range are available, zero if any
|
||
bit is unavailable. */
|
||
|
||
extern int value_bits_available (const struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Like value_bytes_available, but return false if any byte in the
|
||
whole object is unavailable. */
|
||
extern int value_entirely_available (struct value *value);
|
||
|
||
/* Like value_entirely_available, but return false if any byte in the
|
||
whole object is available. */
|
||
extern int value_entirely_unavailable (struct value *value);
|
||
|
||
/* Mark VALUE's content bytes starting at OFFSET and extending for
|
||
LENGTH bytes as unavailable. */
|
||
|
||
extern void mark_value_bytes_unavailable (struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Mark VALUE's content bits starting at OFFSET and extending for
|
||
LENGTH bits as unavailable. */
|
||
|
||
extern void mark_value_bits_unavailable (struct value *value,
|
||
int offset, int length);
|
||
|
||
/* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
|
||
LENGTH bytes of VAL2's contents starting at OFFSET2.
|
||
|
||
Note that "contents" refers to the whole value's contents
|
||
(value_contents_all), without any embedded offset adjustment. For
|
||
example, to compare a complete object value with itself, including
|
||
its enclosing type chunk, you'd do:
|
||
|
||
int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
|
||
value_available_contents (val, 0, val, 0, len);
|
||
|
||
Returns true iff the set of available contents match. Unavailable
|
||
contents compare equal with unavailable contents, and different
|
||
with any available byte. For example, if 'x's represent an
|
||
unavailable byte, and 'V' and 'Z' represent different available
|
||
bytes, in a value with length 16:
|
||
|
||
offset: 0 4 8 12 16
|
||
contents: xxxxVVVVxxxxVVZZ
|
||
|
||
then:
|
||
|
||
value_available_contents_eq(val, 0, val, 8, 6) => 1
|
||
value_available_contents_eq(val, 0, val, 4, 4) => 1
|
||
value_available_contents_eq(val, 0, val, 8, 8) => 0
|
||
value_available_contents_eq(val, 4, val, 12, 2) => 1
|
||
value_available_contents_eq(val, 4, val, 12, 4) => 0
|
||
value_available_contents_eq(val, 3, val, 4, 4) => 0
|
||
|
||
We only know whether a value chunk is available if we've tried to
|
||
read it. As this routine is used by printing routines, which may
|
||
be printing values in the value history, long after the inferior is
|
||
gone, it works with const values. Therefore, this routine must not
|
||
be called with lazy values. */
|
||
|
||
extern int value_available_contents_eq (const struct value *val1, int offset1,
|
||
const struct value *val2, int offset2,
|
||
int length);
|
||
|
||
/* Read LENGTH bytes of memory 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. */
|
||
|
||
extern void read_value_memory (struct value *val, int embedded_offset,
|
||
int stack, CORE_ADDR memaddr,
|
||
gdb_byte *buffer, size_t length);
|
||
|
||
/* Cast SCALAR_VALUE to the element type of VECTOR_TYPE, then replicate
|
||
into each element of a new vector value with VECTOR_TYPE. */
|
||
|
||
struct value *value_vector_widen (struct value *scalar_value,
|
||
struct type *vector_type);
|
||
|
||
|
||
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "expression.h"
|
||
|
||
struct frame_info;
|
||
struct fn_field;
|
||
|
||
extern int print_address_demangle (const struct value_print_options *,
|
||
struct gdbarch *, CORE_ADDR,
|
||
struct ui_file *, int);
|
||
|
||
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 int unpack_value_bits_as_long (struct type *field_type,
|
||
const gdb_byte *valaddr,
|
||
int embedded_offset, int bitpos,
|
||
int bitsize,
|
||
const struct value *original_value,
|
||
LONGEST *result);
|
||
|
||
extern LONGEST unpack_field_as_long (struct type *type,
|
||
const gdb_byte *valaddr,
|
||
int fieldno);
|
||
extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
|
||
int embedded_offset, int fieldno,
|
||
const struct value *val, LONGEST *result);
|
||
|
||
extern struct value *value_field_bitfield (struct type *type, int fieldno,
|
||
const gdb_byte *valaddr,
|
||
int embedded_offset,
|
||
const struct value *val);
|
||
|
||
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 (char *, char **);
|
||
|
||
extern struct value *value_at (struct type *type, CORE_ADDR addr);
|
||
extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
|
||
|
||
extern struct value *value_from_contents_and_address (struct type *,
|
||
const gdb_byte *,
|
||
CORE_ADDR);
|
||
extern struct value *value_from_contents (struct type *, const gdb_byte *);
|
||
|
||
extern struct value *default_value_from_register (struct type *type,
|
||
int regnum,
|
||
struct frame_info *frame);
|
||
|
||
extern void read_frame_register_value (struct value *value,
|
||
struct frame_info *frame);
|
||
|
||
extern struct value *value_from_register (struct type *type, int regnum,
|
||
struct frame_info *frame);
|
||
|
||
extern CORE_ADDR address_from_register (struct type *type, int regnum,
|
||
struct frame_info *frame);
|
||
|
||
extern struct value *value_of_variable (struct symbol *var,
|
||
const struct block *b);
|
||
|
||
extern struct value *address_of_variable (struct symbol *var,
|
||
const struct block *b);
|
||
|
||
extern struct value *value_of_register (int regnum, struct frame_info *frame);
|
||
|
||
struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
|
||
|
||
extern int symbol_read_needs_frame (struct symbol *);
|
||
|
||
extern struct value *read_var_value (struct symbol *var,
|
||
struct frame_info *frame);
|
||
|
||
extern struct value *default_read_var_value (struct symbol *var,
|
||
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, int dst_offset,
|
||
struct value *src, int src_offset,
|
||
int length);
|
||
extern void value_contents_copy_raw (struct value *dst, int dst_offset,
|
||
struct value *src, int src_offset,
|
||
int length);
|
||
|
||
extern struct value *allocate_repeat_value (struct type *type, int count);
|
||
|
||
extern struct value *value_mark (void);
|
||
|
||
extern void value_free_to_mark (struct value *mark);
|
||
|
||
extern struct value *value_cstring (char *ptr, ssize_t len,
|
||
struct type *char_type);
|
||
extern struct value *value_string (char *ptr, ssize_t len,
|
||
struct type *char_type);
|
||
|
||
extern struct value *value_array (int lowbound, int highbound,
|
||
struct value **elemvec);
|
||
|
||
extern struct value *value_concat (struct value *arg1, struct value *arg2);
|
||
|
||
extern struct value *value_binop (struct value *arg1, struct value *arg2,
|
||
enum exp_opcode op);
|
||
|
||
extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
|
||
|
||
extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
|
||
|
||
extern int value_must_coerce_to_target (struct value *arg1);
|
||
|
||
extern struct value *value_coerce_to_target (struct value *arg1);
|
||
|
||
extern struct value *value_coerce_array (struct value *arg1);
|
||
|
||
extern struct value *value_coerce_function (struct value *arg1);
|
||
|
||
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_assign (struct value *toval,
|
||
struct value *fromval);
|
||
|
||
extern struct value *value_pos (struct value *arg1);
|
||
|
||
extern struct value *value_neg (struct value *arg1);
|
||
|
||
extern struct value *value_complement (struct value *arg1);
|
||
|
||
extern struct value *value_struct_elt (struct value **argp,
|
||
struct value **args,
|
||
const char *name, int *static_memfuncp,
|
||
const char *err);
|
||
|
||
extern struct value *value_struct_elt_bitpos (struct value **argp,
|
||
int bitpos,
|
||
struct type *field_type,
|
||
const char *err);
|
||
|
||
extern struct value *value_aggregate_elt (struct type *curtype,
|
||
char *name,
|
||
struct type *expect_type,
|
||
int want_address,
|
||
enum noside noside);
|
||
|
||
extern struct value *value_static_field (struct type *type, int fieldno);
|
||
|
||
enum oload_search_type { NON_METHOD, METHOD, BOTH };
|
||
|
||
extern int find_overload_match (struct value **args, int nargs,
|
||
const char *name,
|
||
enum oload_search_type method,
|
||
struct value **objp, struct symbol *fsym,
|
||
struct value **valp, struct symbol **symp,
|
||
int *staticp, const int no_adl);
|
||
|
||
extern struct value *value_field (struct value *arg1, int fieldno);
|
||
|
||
extern struct value *value_primitive_field (struct value *arg1, int offset,
|
||
int fieldno,
|
||
struct type *arg_type);
|
||
|
||
|
||
extern struct type *value_rtti_indirect_type (struct value *, int *, int *,
|
||
int *);
|
||
|
||
extern struct value *value_full_object (struct value *, struct type *, int,
|
||
int, int);
|
||
|
||
extern struct value *value_cast_pointers (struct type *, struct value *, int);
|
||
|
||
extern struct value *value_cast (struct type *type, struct value *arg2);
|
||
|
||
extern struct value *value_reinterpret_cast (struct type *type,
|
||
struct value *arg);
|
||
|
||
extern struct value *value_dynamic_cast (struct type *type, struct value *arg);
|
||
|
||
extern struct value *value_zero (struct type *type, enum lval_type lv);
|
||
|
||
extern struct value *value_one (struct type *type);
|
||
|
||
extern struct value *value_repeat (struct value *arg1, int count);
|
||
|
||
extern struct value *value_subscript (struct value *array, LONGEST index);
|
||
|
||
extern struct value *value_bitstring_subscript (struct type *type,
|
||
struct value *bitstring,
|
||
LONGEST index);
|
||
|
||
extern struct value *register_value_being_returned (struct type *valtype,
|
||
struct regcache *retbuf);
|
||
|
||
extern int value_in (struct value *element, struct value *set);
|
||
|
||
extern int value_bit_index (struct type *type, const gdb_byte *addr,
|
||
int index);
|
||
|
||
extern enum return_value_convention
|
||
struct_return_convention (struct gdbarch *gdbarch, struct value *function,
|
||
struct type *value_type);
|
||
|
||
extern int using_struct_return (struct gdbarch *gdbarch,
|
||
struct value *function,
|
||
struct type *value_type);
|
||
|
||
extern struct value *evaluate_expression (struct expression *exp);
|
||
|
||
extern struct value *evaluate_type (struct expression *exp);
|
||
|
||
extern struct value *evaluate_subexp (struct type *expect_type,
|
||
struct expression *exp,
|
||
int *pos, enum noside noside);
|
||
|
||
extern struct value *evaluate_subexpression_type (struct expression *exp,
|
||
int subexp);
|
||
|
||
extern void fetch_subexp_value (struct expression *exp, int *pc,
|
||
struct value **valp, struct value **resultp,
|
||
struct value **val_chain,
|
||
int preserve_errors);
|
||
|
||
extern char *extract_field_op (struct expression *exp, int *subexp);
|
||
|
||
extern struct value *evaluate_subexp_with_coercion (struct expression *,
|
||
int *, enum noside);
|
||
|
||
extern struct value *parse_and_eval (const char *exp);
|
||
|
||
extern struct value *parse_to_comma_and_eval (const char **expp);
|
||
|
||
extern struct type *parse_and_eval_type (char *p, int length);
|
||
|
||
extern CORE_ADDR parse_and_eval_address (const char *exp);
|
||
|
||
extern LONGEST parse_and_eval_long (const char *exp);
|
||
|
||
extern void unop_promote (const struct language_defn *language,
|
||
struct gdbarch *gdbarch,
|
||
struct value **arg1);
|
||
|
||
extern void binop_promote (const struct language_defn *language,
|
||
struct gdbarch *gdbarch,
|
||
struct value **arg1, struct value **arg2);
|
||
|
||
extern struct value *access_value_history (int num);
|
||
|
||
extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
|
||
struct internalvar *var);
|
||
|
||
extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
|
||
|
||
extern void set_internalvar (struct internalvar *var, struct value *val);
|
||
|
||
extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
|
||
|
||
extern void set_internalvar_string (struct internalvar *var,
|
||
const char *string);
|
||
|
||
extern void clear_internalvar (struct internalvar *var);
|
||
|
||
extern void set_internalvar_component (struct internalvar *var,
|
||
int offset,
|
||
int bitpos, int bitsize,
|
||
struct value *newvalue);
|
||
|
||
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);
|
||
|
||
/* An internalvar can be dynamically computed by supplying a vector of
|
||
function pointers to perform various operations. */
|
||
|
||
struct internalvar_funcs
|
||
{
|
||
/* Compute the value of the variable. The DATA argument passed to
|
||
the function is the same argument that was passed to
|
||
`create_internalvar_type_lazy'. */
|
||
|
||
struct value *(*make_value) (struct gdbarch *arch,
|
||
struct internalvar *var,
|
||
void *data);
|
||
|
||
/* Update the agent expression EXPR with bytecode to compute the
|
||
value. VALUE is the agent value we are updating. The DATA
|
||
argument passed to this function is the same argument that was
|
||
passed to `create_internalvar_type_lazy'. If this pointer is
|
||
NULL, then the internalvar cannot be compiled to an agent
|
||
expression. */
|
||
|
||
void (*compile_to_ax) (struct internalvar *var,
|
||
struct agent_expr *expr,
|
||
struct axs_value *value,
|
||
void *data);
|
||
|
||
/* If non-NULL, this is called to destroy DATA. The DATA argument
|
||
passed to this function is the same argument that was passed to
|
||
`create_internalvar_type_lazy'. */
|
||
|
||
void (*destroy) (void *data);
|
||
};
|
||
|
||
extern struct internalvar *create_internalvar_type_lazy (const char *name,
|
||
const struct internalvar_funcs *funcs,
|
||
void *data);
|
||
|
||
/* Compile an internal variable to an agent expression. VAR is the
|
||
variable to compile; EXPR and VALUE are the agent expression we are
|
||
updating. This will return 0 if there is no known way to compile
|
||
VAR, and 1 if VAR was successfully compiled. It may also throw an
|
||
exception on error. */
|
||
|
||
extern int compile_internalvar_to_ax (struct internalvar *var,
|
||
struct agent_expr *expr,
|
||
struct axs_value *value);
|
||
|
||
extern struct internalvar *lookup_internalvar (const char *name);
|
||
|
||
extern int value_equal (struct value *arg1, struct value *arg2);
|
||
|
||
extern int value_equal_contents (struct value *arg1, struct value *arg2);
|
||
|
||
extern int value_less (struct value *arg1, struct value *arg2);
|
||
|
||
extern int value_logical_not (struct value *arg1);
|
||
|
||
/* C++ */
|
||
|
||
extern struct value *value_of_this (const struct language_defn *lang);
|
||
|
||
extern struct value *value_of_this_silent (const struct language_defn *lang);
|
||
|
||
extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
|
||
enum exp_opcode op,
|
||
enum exp_opcode otherop,
|
||
enum noside noside);
|
||
|
||
extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
|
||
enum noside noside);
|
||
|
||
extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
|
||
int j, struct type *type, int offset);
|
||
|
||
extern int binop_types_user_defined_p (enum exp_opcode op,
|
||
struct type *type1,
|
||
struct type *type2);
|
||
|
||
extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
|
||
struct value *arg2);
|
||
|
||
extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
|
||
|
||
extern int destructor_name_p (const char *name, struct type *type);
|
||
|
||
extern void value_incref (struct value *val);
|
||
|
||
extern void value_free (struct value *val);
|
||
|
||
extern void free_all_values (void);
|
||
|
||
extern void free_value_chain (struct value *v);
|
||
|
||
extern void release_value (struct value *val);
|
||
|
||
extern void release_value_or_incref (struct value *val);
|
||
|
||
extern int record_latest_value (struct value *val);
|
||
|
||
extern void modify_field (struct type *type, gdb_byte *addr,
|
||
LONGEST fieldval, int bitpos, int bitsize);
|
||
|
||
extern void type_print (struct type *type, const char *varstring,
|
||
struct ui_file *stream, int show);
|
||
|
||
extern char *type_to_string (struct type *type);
|
||
|
||
extern gdb_byte *baseclass_addr (struct type *type, int index,
|
||
gdb_byte *valaddr,
|
||
struct value **valuep, int *errp);
|
||
|
||
extern void print_longest (struct ui_file *stream, int format,
|
||
int use_local, LONGEST val);
|
||
|
||
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);
|
||
|
||
extern void value_print_array_elements (struct value *val,
|
||
struct ui_file *stream, int format,
|
||
enum val_prettyformat pretty);
|
||
|
||
extern struct value *value_release_to_mark (struct value *mark);
|
||
|
||
extern void val_print (struct type *type, const gdb_byte *valaddr,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int recurse,
|
||
const 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,
|
||
const struct language_defn *language);
|
||
|
||
extern int val_print_string (struct type *elttype, const char *encoding,
|
||
CORE_ADDR addr, int len,
|
||
struct ui_file *stream,
|
||
const struct value_print_options *options);
|
||
|
||
extern void print_variable_and_value (const char *name,
|
||
struct symbol *var,
|
||
struct frame_info *frame,
|
||
struct ui_file *stream,
|
||
int indent);
|
||
|
||
extern void typedef_print (struct type *type, struct symbol *news,
|
||
struct ui_file *stream);
|
||
|
||
extern char *internalvar_name (struct internalvar *var);
|
||
|
||
extern void preserve_values (struct objfile *);
|
||
|
||
/* From values.c */
|
||
|
||
extern struct value *value_copy (struct value *);
|
||
|
||
extern struct value *value_non_lval (struct value *);
|
||
|
||
extern void preserve_one_value (struct value *, struct objfile *, htab_t);
|
||
|
||
/* From valops.c */
|
||
|
||
extern struct value *varying_to_slice (struct value *);
|
||
|
||
extern struct value *value_slice (struct value *, int, int);
|
||
|
||
extern struct value *value_literal_complex (struct value *, struct value *,
|
||
struct type *);
|
||
|
||
extern struct value *find_function_in_inferior (const char *,
|
||
struct objfile **);
|
||
|
||
extern struct value *value_allocate_space_in_inferior (int);
|
||
|
||
extern struct value *value_subscripted_rvalue (struct value *array,
|
||
LONGEST index, int lowerbound);
|
||
|
||
/* User function handler. */
|
||
|
||
typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
|
||
const struct language_defn *language,
|
||
void *cookie,
|
||
int argc,
|
||
struct value **argv);
|
||
|
||
void add_internal_function (const char *name, const char *doc,
|
||
internal_function_fn handler,
|
||
void *cookie);
|
||
|
||
struct value *call_internal_function (struct gdbarch *gdbarch,
|
||
const struct language_defn *language,
|
||
struct value *function,
|
||
int argc, struct value **argv);
|
||
|
||
char *value_internal_function_name (struct value *);
|
||
|
||
#endif /* !defined (VALUE_H) */
|