mirror of
https://sourceware.org/git/binutils-gdb.git
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0c3acc0923
The problem is printing the wrong value for dynamic local variables
when using the "info locals" command. Consider the following code:
procedure Print (I1 : Positive; I2 : Positive) is
type My_String is array (I1 .. I2) of Character;
I : My_String := (others => 'A');
S : String (1 .. I2 + 3) := (others => ' ');
begin
S (I1 .. I2) := String (I); -- BREAK
Put_Line (S);
end Print;
After the debugger stopped at BREAK, we try printing all local variables.
Here is what we get:
(gdb) info locals
i = "["00"]["00"]"
s = "["00"]["00"]["00"]["00"]["00"]["00"]["00"]["00"]"
Curiously, printing their value using the "print" command works:
(gdb) print i
$1 = "AA"
(gdb) print s
$2 = " "
We traced the problem to trying to get the contents of a variable
(call to value_contents) before "fix'ing" it. For those not familiar
with the Ada language support, "fixing" a value consists of swapping
the value's dynamic type with a static version that is appropriate
for our actual value. As a result, the dynamic type was used to
determine the value size, which is zero, and thus the value contents
was empty.
gdb/ChangeLog:
* valprint.c (common_val_print): Fix the value before extracting
its contents.
* ada-lang.c (ada_to_fixed_value): Make this function extern.
* ada-lang.h (ada_to_fixed_value): New function declaration.
* ada-valprint.c (ada_value_print): Use ada_to_fixed_value
to avoid code duplication and fix a bug in the handling of
fixed types contents.
gdb/testsuite/ChangeLog:
* gdb.ada/dyn_loc: New testcase.
1112 lines
31 KiB
C
1112 lines
31 KiB
C
/* Support for printing Ada values for GDB, the GNU debugger.
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Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001, 2002,
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2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
|
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Free Software Foundation, Inc.
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|
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This file is part of GDB.
|
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|
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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
|
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(at your option) any later version.
|
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|
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This program is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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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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#include "defs.h"
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#include <ctype.h>
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#include "gdb_string.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "demangle.h"
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#include "valprint.h"
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#include "language.h"
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#include "annotate.h"
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#include "ada-lang.h"
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#include "c-lang.h"
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#include "infcall.h"
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#include "exceptions.h"
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#include "objfiles.h"
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/* Encapsulates arguments to ada_val_print. */
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struct ada_val_print_args
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{
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struct type *type;
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const gdb_byte *valaddr0;
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int embedded_offset;
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CORE_ADDR address;
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struct ui_file *stream;
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int recurse;
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const struct value_print_options *options;
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};
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static void print_record (struct type *, const gdb_byte *, struct ui_file *,
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int, const struct value_print_options *);
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static int print_field_values (struct type *, const gdb_byte *,
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struct ui_file *, int,
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const struct value_print_options *,
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int, struct type *,
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const gdb_byte *);
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static void adjust_type_signedness (struct type *);
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static int ada_val_print_stub (void *args0);
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static int ada_val_print_1 (struct type *, const gdb_byte *, int, CORE_ADDR,
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struct ui_file *, int,
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const struct value_print_options *);
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/* Make TYPE unsigned if its range of values includes no negatives. */
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static void
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adjust_type_signedness (struct type *type)
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{
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if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE
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&& TYPE_LOW_BOUND (type) >= 0)
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TYPE_UNSIGNED (type) = 1;
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}
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/* Assuming TYPE is a simple array type, prints its lower bound on STREAM,
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if non-standard (i.e., other than 1 for numbers, other than lower bound
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of index type for enumerated type). Returns 1 if something printed,
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otherwise 0. */
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static int
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print_optional_low_bound (struct ui_file *stream, struct type *type,
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const struct value_print_options *options)
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{
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struct type *index_type;
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long low_bound;
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long high_bound;
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if (options->print_array_indexes)
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return 0;
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if (!get_array_bounds (type, &low_bound, &high_bound))
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return 0;
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/* If this is an empty array, then don't print the lower bound.
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That would be confusing, because we would print the lower bound,
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followed by... nothing! */
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if (low_bound > high_bound)
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return 0;
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index_type = TYPE_INDEX_TYPE (type);
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if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
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{
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/* We need to know what the base type is, in order to do the
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appropriate check below. Otherwise, if this is a subrange
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of an enumerated type, where the underlying value of the
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first element is typically 0, we might test the low bound
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against the wrong value. */
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index_type = TYPE_TARGET_TYPE (index_type);
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}
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switch (TYPE_CODE (index_type))
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{
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case TYPE_CODE_BOOL:
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if (low_bound == 0)
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return 0;
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break;
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case TYPE_CODE_ENUM:
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if (low_bound == TYPE_FIELD_BITPOS (index_type, 0))
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return 0;
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break;
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case TYPE_CODE_UNDEF:
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index_type = NULL;
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/* FALL THROUGH */
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default:
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if (low_bound == 1)
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return 0;
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break;
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}
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ada_print_scalar (index_type, (LONGEST) low_bound, stream);
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fprintf_filtered (stream, " => ");
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return 1;
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}
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/* Version of val_print_array_elements for GNAT-style packed arrays.
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Prints elements of packed array of type TYPE at bit offset
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BITOFFSET from VALADDR on STREAM. Formats according to OPTIONS and
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separates with commas. RECURSE is the recursion (nesting) level.
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TYPE must have been decoded (as by ada_coerce_to_simple_array). */
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static void
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val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr,
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int bitoffset, struct ui_file *stream,
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int recurse,
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const struct value_print_options *options)
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{
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unsigned int i;
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unsigned int things_printed = 0;
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unsigned len;
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struct type *elttype, *index_type;
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unsigned eltlen;
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unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0);
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struct value *mark = value_mark ();
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LONGEST low = 0;
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elttype = TYPE_TARGET_TYPE (type);
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eltlen = TYPE_LENGTH (check_typedef (elttype));
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index_type = TYPE_INDEX_TYPE (type);
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{
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LONGEST high;
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if (get_discrete_bounds (index_type, &low, &high) < 0)
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len = 1;
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else
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len = high - low + 1;
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}
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i = 0;
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annotate_array_section_begin (i, elttype);
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while (i < len && things_printed < options->print_max)
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{
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struct value *v0, *v1;
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int i0;
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if (i != 0)
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{
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if (options->prettyprint_arrays)
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{
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fprintf_filtered (stream, ",\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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fprintf_filtered (stream, ", ");
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}
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}
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wrap_here (n_spaces (2 + 2 * recurse));
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maybe_print_array_index (index_type, i + low, stream, options);
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i0 = i;
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v0 = ada_value_primitive_packed_val (NULL, valaddr,
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(i0 * bitsize) / HOST_CHAR_BIT,
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(i0 * bitsize) % HOST_CHAR_BIT,
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bitsize, elttype);
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while (1)
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{
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i += 1;
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if (i >= len)
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break;
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v1 = ada_value_primitive_packed_val (NULL, valaddr,
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(i * bitsize) / HOST_CHAR_BIT,
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(i * bitsize) % HOST_CHAR_BIT,
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bitsize, elttype);
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if (memcmp (value_contents (v0), value_contents (v1), eltlen) != 0)
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break;
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}
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if (i - i0 > options->repeat_count_threshold)
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{
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struct value_print_options opts = *options;
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opts.deref_ref = 0;
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val_print (elttype, value_contents (v0), 0, 0, stream,
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recurse + 1, &opts, current_language);
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annotate_elt_rep (i - i0);
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fprintf_filtered (stream, _(" <repeats %u times>"), i - i0);
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annotate_elt_rep_end ();
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}
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else
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{
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int j;
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struct value_print_options opts = *options;
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opts.deref_ref = 0;
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for (j = i0; j < i; j += 1)
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{
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if (j > i0)
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{
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if (options->prettyprint_arrays)
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{
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fprintf_filtered (stream, ",\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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fprintf_filtered (stream, ", ");
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}
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wrap_here (n_spaces (2 + 2 * recurse));
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maybe_print_array_index (index_type, j + low,
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stream, options);
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}
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val_print (elttype, value_contents (v0), 0, 0, stream,
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recurse + 1, &opts, current_language);
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annotate_elt ();
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}
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}
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things_printed += i - i0;
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}
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annotate_array_section_end ();
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if (i < len)
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{
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fprintf_filtered (stream, "...");
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}
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value_free_to_mark (mark);
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}
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static struct type *
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printable_val_type (struct type *type, const gdb_byte *valaddr)
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{
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return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1);
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}
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/* Print the character C on STREAM as part of the contents of a literal
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string whose delimiter is QUOTER. TYPE_LEN is the length in bytes
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(1 or 2) of the character. */
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void
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ada_emit_char (int c, struct type *type, struct ui_file *stream,
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int quoter, int type_len)
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{
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if (type_len != 2)
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type_len = 1;
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c &= (1 << (type_len * TARGET_CHAR_BIT)) - 1;
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if (isascii (c) && isprint (c))
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{
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if (c == quoter && c == '"')
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fprintf_filtered (stream, "\"\"");
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else
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fprintf_filtered (stream, "%c", c);
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}
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else
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fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c);
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}
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/* Character #I of STRING, given that TYPE_LEN is the size in bytes (1
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or 2) of a character. */
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static int
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char_at (const gdb_byte *string, int i, int type_len,
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enum bfd_endian byte_order)
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{
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if (type_len == 1)
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return string[i];
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else
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return (int) extract_unsigned_integer (string + 2 * i, 2, byte_order);
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}
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/* Wrapper around memcpy to make it legal argument to ui_file_put */
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static void
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ui_memcpy (void *dest, const char *buffer, long len)
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{
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memcpy (dest, buffer, (size_t) len);
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((char *) dest)[len] = '\0';
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}
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/* Print a floating-point value of type TYPE, pointed to in GDB by
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VALADDR, on STREAM. Use Ada formatting conventions: there must be
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a decimal point, and at least one digit before and after the
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point. We use GNAT format for NaNs and infinities. */
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static void
|
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ada_print_floating (const gdb_byte *valaddr, struct type *type,
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struct ui_file *stream)
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{
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char buffer[64];
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char *s, *result;
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int len;
|
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struct ui_file *tmp_stream = mem_fileopen ();
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struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream);
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print_floating (valaddr, type, tmp_stream);
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ui_file_put (tmp_stream, ui_memcpy, buffer);
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do_cleanups (cleanups);
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result = buffer;
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len = strlen (result);
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|
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/* Modify for Ada rules. */
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s = strstr (result, "inf");
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if (s == NULL)
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s = strstr (result, "Inf");
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if (s == NULL)
|
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s = strstr (result, "INF");
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if (s != NULL)
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strcpy (s, "Inf");
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|
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if (s == NULL)
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{
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s = strstr (result, "nan");
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if (s == NULL)
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s = strstr (result, "NaN");
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if (s == NULL)
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s = strstr (result, "Nan");
|
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if (s != NULL)
|
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{
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s[0] = s[2] = 'N';
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if (result[0] == '-')
|
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result += 1;
|
||
}
|
||
}
|
||
|
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if (s == NULL && strchr (result, '.') == NULL)
|
||
{
|
||
s = strchr (result, 'e');
|
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if (s == NULL)
|
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fprintf_filtered (stream, "%s.0", result);
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else
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fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s);
|
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return;
|
||
}
|
||
fprintf_filtered (stream, "%s", result);
|
||
}
|
||
|
||
void
|
||
ada_printchar (int c, struct type *type, struct ui_file *stream)
|
||
{
|
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fputs_filtered ("'", stream);
|
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ada_emit_char (c, type, stream, '\'', 1);
|
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fputs_filtered ("'", stream);
|
||
}
|
||
|
||
/* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a
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form appropriate for TYPE, if non-NULL. If TYPE is NULL, print VAL
|
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like a default signed integer. */
|
||
|
||
void
|
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ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream)
|
||
{
|
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unsigned int i;
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unsigned len;
|
||
|
||
if (!type)
|
||
{
|
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print_longest (stream, 'd', 0, val);
|
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return;
|
||
}
|
||
|
||
type = ada_check_typedef (type);
|
||
|
||
switch (TYPE_CODE (type))
|
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{
|
||
|
||
case TYPE_CODE_ENUM:
|
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len = TYPE_NFIELDS (type);
|
||
for (i = 0; i < len; i++)
|
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{
|
||
if (TYPE_FIELD_BITPOS (type, i) == val)
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
if (i < len)
|
||
{
|
||
fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
|
||
}
|
||
else
|
||
{
|
||
print_longest (stream, 'd', 0, val);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_INT:
|
||
print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val);
|
||
break;
|
||
|
||
case TYPE_CODE_CHAR:
|
||
LA_PRINT_CHAR ((unsigned char) val, type, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_BOOL:
|
||
fprintf_filtered (stream, val ? "true" : "false");
|
||
break;
|
||
|
||
case TYPE_CODE_RANGE:
|
||
ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream);
|
||
return;
|
||
|
||
case TYPE_CODE_UNDEF:
|
||
case TYPE_CODE_PTR:
|
||
case TYPE_CODE_ARRAY:
|
||
case TYPE_CODE_STRUCT:
|
||
case TYPE_CODE_UNION:
|
||
case TYPE_CODE_FUNC:
|
||
case TYPE_CODE_FLT:
|
||
case TYPE_CODE_VOID:
|
||
case TYPE_CODE_SET:
|
||
case TYPE_CODE_STRING:
|
||
case TYPE_CODE_ERROR:
|
||
case TYPE_CODE_MEMBERPTR:
|
||
case TYPE_CODE_METHODPTR:
|
||
case TYPE_CODE_METHOD:
|
||
case TYPE_CODE_REF:
|
||
warning (_("internal error: unhandled type in ada_print_scalar"));
|
||
break;
|
||
|
||
default:
|
||
error (_("Invalid type code in symbol table."));
|
||
}
|
||
gdb_flush (stream);
|
||
}
|
||
|
||
/* Print the character string STRING, printing at most LENGTH characters.
|
||
Printing stops early if the number hits print_max; repeat counts
|
||
are printed as appropriate. Print ellipses at the end if we
|
||
had to stop before printing LENGTH characters, or if
|
||
FORCE_ELLIPSES. TYPE_LEN is the length (1 or 2) of the character type.
|
||
*/
|
||
|
||
static void
|
||
printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string,
|
||
unsigned int length, int force_ellipses, int type_len,
|
||
const struct value_print_options *options)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (elttype));
|
||
unsigned int i;
|
||
unsigned int things_printed = 0;
|
||
int in_quotes = 0;
|
||
int need_comma = 0;
|
||
|
||
if (length == 0)
|
||
{
|
||
fputs_filtered ("\"\"", stream);
|
||
return;
|
||
}
|
||
|
||
for (i = 0; i < length && things_printed < options->print_max; i += 1)
|
||
{
|
||
/* Position of the character we are examining
|
||
to see whether it is repeated. */
|
||
unsigned int rep1;
|
||
/* Number of repetitions we have detected so far. */
|
||
unsigned int reps;
|
||
|
||
QUIT;
|
||
|
||
if (need_comma)
|
||
{
|
||
fputs_filtered (", ", stream);
|
||
need_comma = 0;
|
||
}
|
||
|
||
rep1 = i + 1;
|
||
reps = 1;
|
||
while (rep1 < length
|
||
&& char_at (string, rep1, type_len, byte_order)
|
||
== char_at (string, i, type_len, byte_order))
|
||
{
|
||
rep1 += 1;
|
||
reps += 1;
|
||
}
|
||
|
||
if (reps > options->repeat_count_threshold)
|
||
{
|
||
if (in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
fputs_filtered ("\\\", ", stream);
|
||
else
|
||
fputs_filtered ("\", ", stream);
|
||
in_quotes = 0;
|
||
}
|
||
fputs_filtered ("'", stream);
|
||
ada_emit_char (char_at (string, i, type_len, byte_order),
|
||
elttype, stream, '\'', type_len);
|
||
fputs_filtered ("'", stream);
|
||
fprintf_filtered (stream, _(" <repeats %u times>"), reps);
|
||
i = rep1 - 1;
|
||
things_printed += options->repeat_count_threshold;
|
||
need_comma = 1;
|
||
}
|
||
else
|
||
{
|
||
if (!in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
fputs_filtered ("\\\"", stream);
|
||
else
|
||
fputs_filtered ("\"", stream);
|
||
in_quotes = 1;
|
||
}
|
||
ada_emit_char (char_at (string, i, type_len, byte_order),
|
||
elttype, stream, '"', type_len);
|
||
things_printed += 1;
|
||
}
|
||
}
|
||
|
||
/* Terminate the quotes if necessary. */
|
||
if (in_quotes)
|
||
{
|
||
if (options->inspect_it)
|
||
fputs_filtered ("\\\"", stream);
|
||
else
|
||
fputs_filtered ("\"", stream);
|
||
}
|
||
|
||
if (force_ellipses || i < length)
|
||
fputs_filtered ("...", stream);
|
||
}
|
||
|
||
void
|
||
ada_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
|
||
unsigned int length, const char *encoding, int force_ellipses,
|
||
const struct value_print_options *options)
|
||
{
|
||
printstr (stream, type, string, length, force_ellipses, TYPE_LENGTH (type),
|
||
options);
|
||
}
|
||
|
||
|
||
/* Print data of type TYPE located at VALADDR (within GDB), which came from
|
||
the inferior at address ADDRESS, onto stdio stream STREAM according to
|
||
OPTIONS. The data at VALADDR is in target byte order.
|
||
|
||
If the data is printed as a string, returns the number of string characters
|
||
printed.
|
||
|
||
RECURSE indicates the amount of indentation to supply before
|
||
continuation lines; this amount is roughly twice the value of RECURSE. */
|
||
|
||
int
|
||
ada_val_print (struct type *type, const gdb_byte *valaddr0,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options)
|
||
{
|
||
struct ada_val_print_args args;
|
||
args.type = type;
|
||
args.valaddr0 = valaddr0;
|
||
args.embedded_offset = embedded_offset;
|
||
args.address = address;
|
||
args.stream = stream;
|
||
args.recurse = recurse;
|
||
args.options = options;
|
||
|
||
return catch_errors (ada_val_print_stub, &args, NULL, RETURN_MASK_ALL);
|
||
}
|
||
|
||
/* Helper for ada_val_print; used as argument to catch_errors to
|
||
unmarshal the arguments to ada_val_print_1, which does the work. */
|
||
static int
|
||
ada_val_print_stub (void *args0)
|
||
{
|
||
struct ada_val_print_args *argsp = (struct ada_val_print_args *) args0;
|
||
return ada_val_print_1 (argsp->type, argsp->valaddr0,
|
||
argsp->embedded_offset, argsp->address,
|
||
argsp->stream, argsp->recurse, argsp->options);
|
||
}
|
||
|
||
/* Assuming TYPE is a simple array, print the value of this array located
|
||
at VALADDR. See ada_val_print for a description of the various
|
||
parameters of this function; they are identical. The semantics
|
||
of the return value is also identical to ada_val_print. */
|
||
|
||
static int
|
||
ada_val_print_array (struct type *type, const gdb_byte *valaddr,
|
||
CORE_ADDR address, struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options)
|
||
{
|
||
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
|
||
struct type *elttype = TYPE_TARGET_TYPE (type);
|
||
unsigned int eltlen;
|
||
unsigned int len;
|
||
int result = 0;
|
||
|
||
if (elttype == NULL)
|
||
eltlen = 0;
|
||
else
|
||
eltlen = TYPE_LENGTH (elttype);
|
||
if (eltlen == 0)
|
||
len = 0;
|
||
else
|
||
len = TYPE_LENGTH (type) / eltlen;
|
||
|
||
/* For an array of chars, print with string syntax. */
|
||
if (ada_is_string_type (type)
|
||
&& (options->format == 0 || options->format == 's'))
|
||
{
|
||
if (options->prettyprint_arrays)
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
|
||
/* If requested, look for the first null char and only print
|
||
elements up to it. */
|
||
if (options->stop_print_at_null)
|
||
{
|
||
int temp_len;
|
||
|
||
/* Look for a NULL char. */
|
||
for (temp_len = 0;
|
||
(temp_len < len
|
||
&& temp_len < options->print_max
|
||
&& char_at (valaddr, temp_len, eltlen, byte_order) != 0);
|
||
temp_len += 1);
|
||
len = temp_len;
|
||
}
|
||
|
||
printstr (stream, elttype, valaddr, len, 0, eltlen, options);
|
||
result = len;
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
print_optional_low_bound (stream, type, options);
|
||
if (TYPE_FIELD_BITSIZE (type, 0) > 0)
|
||
val_print_packed_array_elements (type, valaddr, 0, stream,
|
||
recurse, options);
|
||
else
|
||
val_print_array_elements (type, valaddr, address, stream,
|
||
recurse, options, 0);
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* See the comment on ada_val_print. This function differs in that it
|
||
does not catch evaluation errors (leaving that to ada_val_print). */
|
||
|
||
static int
|
||
ada_val_print_1 (struct type *type, const gdb_byte *valaddr0,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options)
|
||
{
|
||
unsigned int len;
|
||
int i;
|
||
struct type *elttype;
|
||
unsigned int eltlen;
|
||
LONGEST val;
|
||
const gdb_byte *valaddr = valaddr0 + embedded_offset;
|
||
|
||
type = ada_check_typedef (type);
|
||
|
||
if (ada_is_array_descriptor_type (type)
|
||
|| ada_is_constrained_packed_array_type (type))
|
||
{
|
||
int retn;
|
||
struct value *mark = value_mark ();
|
||
struct value *val;
|
||
val = value_from_contents_and_address (type, valaddr, address);
|
||
val = ada_coerce_to_simple_array_ptr (val);
|
||
if (val == NULL)
|
||
{
|
||
fprintf_filtered (stream, "(null)");
|
||
retn = 0;
|
||
}
|
||
else
|
||
retn = ada_val_print_1 (value_type (val), value_contents (val), 0,
|
||
value_address (val), stream, recurse, options);
|
||
value_free_to_mark (mark);
|
||
return retn;
|
||
}
|
||
|
||
valaddr = ada_aligned_value_addr (type, valaddr);
|
||
embedded_offset -= valaddr - valaddr0 - embedded_offset;
|
||
type = printable_val_type (type, valaddr);
|
||
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
default:
|
||
return c_val_print (type, valaddr0, embedded_offset, address, stream,
|
||
recurse, options);
|
||
|
||
case TYPE_CODE_PTR:
|
||
{
|
||
int ret = c_val_print (type, valaddr0, embedded_offset, address,
|
||
stream, recurse, options);
|
||
if (ada_is_tag_type (type))
|
||
{
|
||
struct value *val =
|
||
value_from_contents_and_address (type, valaddr, address);
|
||
const char *name = ada_tag_name (val);
|
||
if (name != NULL)
|
||
fprintf_filtered (stream, " (%s)", name);
|
||
return 0;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_RANGE:
|
||
if (ada_is_fixed_point_type (type))
|
||
{
|
||
LONGEST v = unpack_long (type, valaddr);
|
||
int len = TYPE_LENGTH (type);
|
||
|
||
fprintf_filtered (stream, len < 4 ? "%.11g" : "%.17g",
|
||
(double) ada_fixed_to_float (type, v));
|
||
return 0;
|
||
}
|
||
else if (TYPE_CODE (type) == TYPE_CODE_RANGE)
|
||
{
|
||
struct type *target_type = TYPE_TARGET_TYPE (type);
|
||
if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type))
|
||
{
|
||
/* Obscure case of range type that has different length from
|
||
its base type. Perform a conversion, or we will get a
|
||
nonsense value. Actually, we could use the same
|
||
code regardless of lengths; I'm just avoiding a cast. */
|
||
struct value *v = value_cast (target_type,
|
||
value_from_contents_and_address
|
||
(type, valaddr, 0));
|
||
return ada_val_print_1 (target_type, value_contents (v), 0, 0,
|
||
stream, recurse + 1, options);
|
||
}
|
||
else
|
||
return ada_val_print_1 (TYPE_TARGET_TYPE (type),
|
||
valaddr0, embedded_offset,
|
||
address, stream, recurse, options);
|
||
}
|
||
else
|
||
{
|
||
int format = (options->format ? options->format
|
||
: options->output_format);
|
||
if (format)
|
||
{
|
||
struct value_print_options opts = *options;
|
||
opts.format = format;
|
||
print_scalar_formatted (valaddr, type, &opts, 0, stream);
|
||
}
|
||
else if (ada_is_system_address_type (type))
|
||
{
|
||
/* FIXME: We want to print System.Address variables using
|
||
the same format as for any access type. But for some
|
||
reason GNAT encodes the System.Address type as an int,
|
||
so we have to work-around this deficiency by handling
|
||
System.Address values as a special case. */
|
||
|
||
struct gdbarch *gdbarch = get_type_arch (type);
|
||
struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
|
||
CORE_ADDR addr = extract_typed_address (valaddr, ptr_type);
|
||
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") ");
|
||
fputs_filtered (paddress (gdbarch, addr), stream);
|
||
}
|
||
else
|
||
{
|
||
val_print_type_code_int (type, valaddr, stream);
|
||
if (ada_is_character_type (type))
|
||
{
|
||
fputs_filtered (" ", stream);
|
||
ada_printchar ((unsigned char) unpack_long (type, valaddr),
|
||
type, stream);
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
case TYPE_CODE_ENUM:
|
||
if (options->format)
|
||
{
|
||
print_scalar_formatted (valaddr, type, options, 0, stream);
|
||
break;
|
||
}
|
||
len = TYPE_NFIELDS (type);
|
||
val = unpack_long (type, valaddr);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
QUIT;
|
||
if (val == TYPE_FIELD_BITPOS (type, i))
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
if (i < len)
|
||
{
|
||
const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i));
|
||
if (name[0] == '\'')
|
||
fprintf_filtered (stream, "%ld %s", (long) val, name);
|
||
else
|
||
fputs_filtered (name, stream);
|
||
}
|
||
else
|
||
{
|
||
print_longest (stream, 'd', 0, val);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_FLAGS:
|
||
if (options->format)
|
||
print_scalar_formatted (valaddr, type, options, 0, stream);
|
||
else
|
||
val_print_type_code_flags (type, valaddr, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_FLT:
|
||
if (options->format)
|
||
return c_val_print (type, valaddr0, embedded_offset, address, stream,
|
||
recurse, options);
|
||
else
|
||
ada_print_floating (valaddr0 + embedded_offset, type, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_UNION:
|
||
case TYPE_CODE_STRUCT:
|
||
if (ada_is_bogus_array_descriptor (type))
|
||
{
|
||
fprintf_filtered (stream, "(...?)");
|
||
return 0;
|
||
}
|
||
else
|
||
{
|
||
print_record (type, valaddr, stream, recurse, options);
|
||
return 0;
|
||
}
|
||
|
||
case TYPE_CODE_ARRAY:
|
||
return ada_val_print_array (type, valaddr, address, stream,
|
||
recurse, options);
|
||
|
||
case TYPE_CODE_REF:
|
||
/* For references, the debugger is expected to print the value as
|
||
an address if DEREF_REF is null. But printing an address in place
|
||
of the object value would be confusing to an Ada programmer.
|
||
So, for Ada values, we print the actual dereferenced value
|
||
regardless. */
|
||
elttype = check_typedef (TYPE_TARGET_TYPE (type));
|
||
|
||
if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
|
||
{
|
||
LONGEST deref_val_int = (LONGEST) unpack_pointer (type, valaddr);
|
||
if (deref_val_int != 0)
|
||
{
|
||
struct value *deref_val =
|
||
ada_value_ind (value_from_longest
|
||
(lookup_pointer_type (elttype),
|
||
deref_val_int));
|
||
val_print (value_type (deref_val),
|
||
value_contents (deref_val), 0,
|
||
value_address (deref_val), stream, recurse + 1,
|
||
options, current_language);
|
||
}
|
||
else
|
||
fputs_filtered ("(null)", stream);
|
||
}
|
||
else
|
||
fputs_filtered ("???", stream);
|
||
|
||
break;
|
||
}
|
||
gdb_flush (stream);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
print_variant_part (struct type *type, int field_num, const gdb_byte *valaddr,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options, int comma_needed,
|
||
struct type *outer_type, const gdb_byte *outer_valaddr)
|
||
{
|
||
struct type *var_type = TYPE_FIELD_TYPE (type, field_num);
|
||
int which = ada_which_variant_applies (var_type, outer_type, outer_valaddr);
|
||
|
||
if (which < 0)
|
||
return 0;
|
||
else
|
||
return print_field_values
|
||
(TYPE_FIELD_TYPE (var_type, which),
|
||
valaddr + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT
|
||
+ TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT,
|
||
stream, recurse, options,
|
||
comma_needed, outer_type, outer_valaddr);
|
||
}
|
||
|
||
int
|
||
ada_value_print (struct value *val0, struct ui_file *stream,
|
||
const struct value_print_options *options)
|
||
{
|
||
struct value *val = ada_to_fixed_value (val0);
|
||
CORE_ADDR address = value_address (val);
|
||
struct type *type = value_type (val);
|
||
struct value_print_options opts;
|
||
|
||
/* If it is a pointer, indicate what it points to. */
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
{
|
||
/* Hack: don't print (char *) for char strings. Their
|
||
type is indicated by the quoted string anyway. */
|
||
if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char)
|
||
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT
|
||
|| TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)))
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") ");
|
||
}
|
||
}
|
||
else if (ada_is_array_descriptor_type (type))
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") ");
|
||
}
|
||
else if (ada_is_bogus_array_descriptor (type))
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") (...?)");
|
||
return 0;
|
||
}
|
||
|
||
opts = *options;
|
||
opts.deref_ref = 1;
|
||
return (val_print (type, value_contents (val), 0, address,
|
||
stream, 0, &opts, current_language));
|
||
}
|
||
|
||
static void
|
||
print_record (struct type *type, const gdb_byte *valaddr,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options)
|
||
{
|
||
type = ada_check_typedef (type);
|
||
|
||
fprintf_filtered (stream, "(");
|
||
|
||
if (print_field_values (type, valaddr, stream, recurse, options,
|
||
0, type, valaddr) != 0 && options->pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 * recurse, stream);
|
||
}
|
||
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
|
||
/* Print out fields of value at VALADDR having structure type TYPE.
|
||
|
||
TYPE, VALADDR, STREAM, RECURSE, and OPTIONS have the
|
||
same meanings as in ada_print_value and ada_val_print.
|
||
|
||
OUTER_TYPE and OUTER_VALADDR give type and address of enclosing record
|
||
(used to get discriminant values when printing variant parts).
|
||
|
||
COMMA_NEEDED is 1 if fields have been printed at the current recursion
|
||
level, so that a comma is needed before any field printed by this
|
||
call.
|
||
|
||
Returns 1 if COMMA_NEEDED or any fields were printed. */
|
||
|
||
static int
|
||
print_field_values (struct type *type, const gdb_byte *valaddr,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value_print_options *options,
|
||
int comma_needed,
|
||
struct type *outer_type, const gdb_byte *outer_valaddr)
|
||
{
|
||
int i, len;
|
||
|
||
len = TYPE_NFIELDS (type);
|
||
|
||
for (i = 0; i < len; i += 1)
|
||
{
|
||
if (ada_is_ignored_field (type, i))
|
||
continue;
|
||
|
||
if (ada_is_wrapper_field (type, i))
|
||
{
|
||
comma_needed =
|
||
print_field_values (TYPE_FIELD_TYPE (type, i),
|
||
valaddr
|
||
+ TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT,
|
||
stream, recurse, options,
|
||
comma_needed, type, valaddr);
|
||
continue;
|
||
}
|
||
else if (ada_is_variant_part (type, i))
|
||
{
|
||
comma_needed =
|
||
print_variant_part (type, i, valaddr,
|
||
stream, recurse, options, comma_needed,
|
||
outer_type, outer_valaddr);
|
||
continue;
|
||
}
|
||
|
||
if (comma_needed)
|
||
fprintf_filtered (stream, ", ");
|
||
comma_needed = 1;
|
||
|
||
if (options->pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
else
|
||
{
|
||
wrap_here (n_spaces (2 + 2 * recurse));
|
||
}
|
||
if (options->inspect_it)
|
||
{
|
||
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
||
fputs_filtered ("\"( ptr \"", stream);
|
||
else
|
||
fputs_filtered ("\"( nodef \"", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus, DMGL_NO_OPTS);
|
||
fputs_filtered ("\" \"", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus, DMGL_NO_OPTS);
|
||
fputs_filtered ("\") \"", stream);
|
||
}
|
||
else
|
||
{
|
||
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
||
fprintf_filtered (stream, "%.*s",
|
||
ada_name_prefix_len (TYPE_FIELD_NAME (type, i)),
|
||
TYPE_FIELD_NAME (type, i));
|
||
annotate_field_name_end ();
|
||
fputs_filtered (" => ", stream);
|
||
annotate_field_value ();
|
||
}
|
||
|
||
if (TYPE_FIELD_PACKED (type, i))
|
||
{
|
||
struct value *v;
|
||
|
||
/* Bitfields require special handling, especially due to byte
|
||
order problems. */
|
||
if (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i))
|
||
{
|
||
fputs_filtered (_("<optimized out or zero length>"), stream);
|
||
}
|
||
else
|
||
{
|
||
int bit_pos = TYPE_FIELD_BITPOS (type, i);
|
||
int bit_size = TYPE_FIELD_BITSIZE (type, i);
|
||
struct value_print_options opts;
|
||
|
||
adjust_type_signedness (TYPE_FIELD_TYPE (type, i));
|
||
v = ada_value_primitive_packed_val (NULL, valaddr,
|
||
bit_pos / HOST_CHAR_BIT,
|
||
bit_pos % HOST_CHAR_BIT,
|
||
bit_size,
|
||
TYPE_FIELD_TYPE (type, i));
|
||
opts = *options;
|
||
opts.deref_ref = 0;
|
||
val_print (TYPE_FIELD_TYPE (type, i), value_contents (v), 0, 0,
|
||
stream, recurse + 1, &opts, current_language);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts = *options;
|
||
opts.deref_ref = 0;
|
||
ada_val_print (TYPE_FIELD_TYPE (type, i),
|
||
valaddr + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT,
|
||
0, 0, stream, recurse + 1, &opts);
|
||
}
|
||
annotate_field_end ();
|
||
}
|
||
|
||
return comma_needed;
|
||
}
|