771dd3a88b
The val_print removal series introduced a new possibly-uninitialized warning in p-valprint.c. Examination of the code shows that the warning does not indicate a real bug, so this patch silences the warning by setting the variable in the catch clause of a try/catch. (The obvious initialization did not work due to a "goto" in this function.) gdb/ChangeLog 2020-03-16 Tom Tromey <tom@tromey.com> * p-valprint.c (pascal_object_print_value): Initialize base_value.
881 lines
24 KiB
C
881 lines
24 KiB
C
/* Support for printing Pascal values for GDB, the GNU debugger.
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Copyright (C) 2000-2020 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
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(at your option) any later version.
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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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/* This file is derived from c-valprint.c */
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#include "defs.h"
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#include "gdb_obstack.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 "command.h"
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#include "gdbcmd.h"
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#include "gdbcore.h"
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#include "demangle.h"
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#include "valprint.h"
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#include "typeprint.h"
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#include "language.h"
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#include "target.h"
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#include "annotate.h"
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#include "p-lang.h"
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#include "cp-abi.h"
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#include "cp-support.h"
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#include "objfiles.h"
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#include "gdbsupport/byte-vector.h"
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#include "cli/cli-style.h"
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static void pascal_object_print_value_fields (struct value *, struct ui_file *,
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int,
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const struct value_print_options *,
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struct type **, int);
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/* Decorations for Pascal. */
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static const struct generic_val_print_decorations p_decorations =
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{
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"",
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" + ",
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" * I",
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"true",
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"false",
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"void",
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"{",
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"}"
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};
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/* See p-lang.h. */
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void
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pascal_value_print_inner (struct value *val, 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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struct type *type = check_typedef (value_type (val));
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struct gdbarch *gdbarch = get_type_arch (type);
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enum bfd_endian byte_order = type_byte_order (type);
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unsigned int i = 0; /* Number of characters printed */
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unsigned len;
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struct type *elttype;
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unsigned eltlen;
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int length_pos, length_size, string_pos;
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struct type *char_type;
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CORE_ADDR addr;
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int want_space = 0;
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const gdb_byte *valaddr = value_contents_for_printing (val);
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_ARRAY:
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{
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LONGEST low_bound, high_bound;
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if (get_array_bounds (type, &low_bound, &high_bound))
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{
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len = high_bound - low_bound + 1;
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elttype = check_typedef (TYPE_TARGET_TYPE (type));
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eltlen = TYPE_LENGTH (elttype);
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if (options->prettyformat_arrays)
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{
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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/* If 's' format is used, try to print out as string.
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If no format is given, print as string if element type
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is of TYPE_CODE_CHAR and element size is 1,2 or 4. */
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if (options->format == 's'
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|| ((eltlen == 1 || eltlen == 2 || eltlen == 4)
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&& TYPE_CODE (elttype) == TYPE_CODE_CHAR
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&& options->format == 0))
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{
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/* If requested, look for the first null char and only print
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elements up to it. */
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if (options->stop_print_at_null)
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{
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unsigned int temp_len;
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/* Look for a NULL char. */
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for (temp_len = 0;
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extract_unsigned_integer (valaddr + temp_len * eltlen,
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eltlen, byte_order)
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&& temp_len < len && temp_len < options->print_max;
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temp_len++);
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len = temp_len;
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}
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LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
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valaddr, len, NULL, 0, options);
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i = len;
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}
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else
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{
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fprintf_filtered (stream, "{");
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/* If this is a virtual function table, print the 0th
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entry specially, and the rest of the members normally. */
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if (pascal_object_is_vtbl_ptr_type (elttype))
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{
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i = 1;
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fprintf_filtered (stream, "%d vtable entries", len - 1);
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}
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else
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{
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i = 0;
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}
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value_print_array_elements (val, stream, recurse, options, i);
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fprintf_filtered (stream, "}");
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}
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break;
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}
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/* Array of unspecified length: treat like pointer to first elt. */
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addr = value_address (val);
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}
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goto print_unpacked_pointer;
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case TYPE_CODE_PTR:
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if (options->format && options->format != 's')
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{
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value_print_scalar_formatted (val, options, 0, stream);
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break;
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}
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if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type))
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{
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/* Print the unmangled name if desired. */
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/* Print vtable entry - we only get here if we ARE using
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-fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
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/* Extract the address, assume that it is unsigned. */
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addr = extract_unsigned_integer (valaddr,
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TYPE_LENGTH (type), byte_order);
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print_address_demangle (options, gdbarch, addr, stream, demangle);
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break;
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}
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check_typedef (TYPE_TARGET_TYPE (type));
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addr = unpack_pointer (type, valaddr);
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print_unpacked_pointer:
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elttype = check_typedef (TYPE_TARGET_TYPE (type));
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if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
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{
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/* Try to print what function it points to. */
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print_address_demangle (options, gdbarch, addr, stream, demangle);
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return;
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}
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if (options->addressprint && options->format != 's')
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{
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fputs_filtered (paddress (gdbarch, addr), stream);
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want_space = 1;
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}
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/* For a pointer to char or unsigned char, also print the string
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pointed to, unless pointer is null. */
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if (((TYPE_LENGTH (elttype) == 1
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&& (TYPE_CODE (elttype) == TYPE_CODE_INT
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|| TYPE_CODE (elttype) == TYPE_CODE_CHAR))
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|| ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4)
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&& TYPE_CODE (elttype) == TYPE_CODE_CHAR))
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&& (options->format == 0 || options->format == 's')
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&& addr != 0)
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{
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if (want_space)
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fputs_filtered (" ", stream);
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/* No wide string yet. */
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i = val_print_string (elttype, NULL, addr, -1, stream, options);
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}
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/* Also for pointers to pascal strings. */
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/* Note: this is Free Pascal specific:
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as GDB does not recognize stabs pascal strings
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Pascal strings are mapped to records
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with lowercase names PM. */
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if (is_pascal_string_type (elttype, &length_pos, &length_size,
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&string_pos, &char_type, NULL)
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&& addr != 0)
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{
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ULONGEST string_length;
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gdb_byte *buffer;
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if (want_space)
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fputs_filtered (" ", stream);
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buffer = (gdb_byte *) xmalloc (length_size);
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read_memory (addr + length_pos, buffer, length_size);
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string_length = extract_unsigned_integer (buffer, length_size,
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byte_order);
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xfree (buffer);
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i = val_print_string (char_type, NULL,
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addr + string_pos, string_length,
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stream, options);
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}
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else if (pascal_object_is_vtbl_member (type))
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{
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/* Print vtbl's nicely. */
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CORE_ADDR vt_address = unpack_pointer (type, valaddr);
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struct bound_minimal_symbol msymbol =
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lookup_minimal_symbol_by_pc (vt_address);
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/* If 'symbol_print' is set, we did the work above. */
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if (!options->symbol_print
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&& (msymbol.minsym != NULL)
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&& (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol)))
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{
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if (want_space)
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fputs_filtered (" ", stream);
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fputs_filtered ("<", stream);
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fputs_filtered (msymbol.minsym->print_name (), stream);
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fputs_filtered (">", stream);
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want_space = 1;
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}
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if (vt_address && options->vtblprint)
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{
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struct value *vt_val;
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struct symbol *wsym = NULL;
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struct type *wtype;
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if (want_space)
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fputs_filtered (" ", stream);
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if (msymbol.minsym != NULL)
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{
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const char *search_name = msymbol.minsym->search_name ();
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wsym = lookup_symbol_search_name (search_name, NULL,
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VAR_DOMAIN).symbol;
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}
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if (wsym)
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{
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wtype = SYMBOL_TYPE (wsym);
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}
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else
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{
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wtype = TYPE_TARGET_TYPE (type);
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}
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vt_val = value_at (wtype, vt_address);
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common_val_print (vt_val, stream, recurse + 1, options,
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current_language);
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if (options->prettyformat)
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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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}
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}
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return;
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case TYPE_CODE_REF:
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case TYPE_CODE_ENUM:
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case TYPE_CODE_FLAGS:
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case TYPE_CODE_FUNC:
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case TYPE_CODE_RANGE:
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case TYPE_CODE_INT:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_BOOL:
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case TYPE_CODE_CHAR:
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generic_value_print (val, stream, recurse, options, &p_decorations);
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break;
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case TYPE_CODE_UNION:
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if (recurse && !options->unionprint)
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{
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fprintf_filtered (stream, "{...}");
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break;
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}
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/* Fall through. */
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case TYPE_CODE_STRUCT:
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if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type))
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{
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/* Print the unmangled name if desired. */
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/* Print vtable entry - we only get here if NOT using
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-fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */
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/* Extract the address, assume that it is unsigned. */
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print_address_demangle
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(options, gdbarch,
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extract_unsigned_integer (valaddr
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+ TYPE_FIELD_BITPOS (type,
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VTBL_FNADDR_OFFSET) / 8,
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TYPE_LENGTH (TYPE_FIELD_TYPE (type,
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VTBL_FNADDR_OFFSET)),
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byte_order),
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stream, demangle);
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}
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else
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{
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if (is_pascal_string_type (type, &length_pos, &length_size,
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&string_pos, &char_type, NULL))
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{
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len = extract_unsigned_integer (valaddr + length_pos,
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length_size, byte_order);
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LA_PRINT_STRING (stream, char_type, valaddr + string_pos,
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len, NULL, 0, options);
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}
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else
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pascal_object_print_value_fields (val, stream, recurse,
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options, NULL, 0);
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}
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break;
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case TYPE_CODE_SET:
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elttype = TYPE_INDEX_TYPE (type);
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elttype = check_typedef (elttype);
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if (TYPE_STUB (elttype))
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{
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fprintf_styled (stream, metadata_style.style (), "<incomplete type>");
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break;
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}
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else
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{
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struct type *range = elttype;
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LONGEST low_bound, high_bound;
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int need_comma = 0;
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fputs_filtered ("[", stream);
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int bound_info = get_discrete_bounds (range, &low_bound, &high_bound);
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if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0)
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{
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/* If we know the size of the set type, we can figure out the
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maximum value. */
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bound_info = 0;
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high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1;
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TYPE_HIGH_BOUND (range) = high_bound;
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}
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maybe_bad_bstring:
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if (bound_info < 0)
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{
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fputs_styled ("<error value>", metadata_style.style (), stream);
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goto done;
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}
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for (i = low_bound; i <= high_bound; i++)
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{
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int element = value_bit_index (type, valaddr, i);
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if (element < 0)
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{
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i = element;
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goto maybe_bad_bstring;
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}
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if (element)
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{
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if (need_comma)
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fputs_filtered (", ", stream);
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print_type_scalar (range, i, stream);
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need_comma = 1;
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if (i + 1 <= high_bound
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&& value_bit_index (type, valaddr, ++i))
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{
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int j = i;
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fputs_filtered ("..", stream);
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while (i + 1 <= high_bound
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&& value_bit_index (type, valaddr, ++i))
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j = i;
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print_type_scalar (range, j, stream);
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}
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}
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}
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done:
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fputs_filtered ("]", stream);
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}
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break;
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default:
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error (_("Invalid pascal type code %d in symbol table."),
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TYPE_CODE (type));
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}
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}
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void
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pascal_value_print (struct value *val, struct ui_file *stream,
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const struct value_print_options *options)
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{
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struct type *type = value_type (val);
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struct value_print_options opts = *options;
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opts.deref_ref = 1;
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/* If it is a pointer, indicate what it points to.
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Print type also if it is a reference.
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Object pascal: if it is a member pointer, we will take care
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of that when we print it. */
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if (TYPE_CODE (type) == TYPE_CODE_PTR
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|| TYPE_CODE (type) == TYPE_CODE_REF)
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{
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/* Hack: remove (char *) for char strings. Their
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type is indicated by the quoted string anyway. */
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if (TYPE_CODE (type) == TYPE_CODE_PTR
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&& TYPE_NAME (type) == NULL
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&& TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
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&& strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
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{
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/* Print nothing. */
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}
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else
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{
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fprintf_filtered (stream, "(");
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type_print (type, "", stream, -1);
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fprintf_filtered (stream, ") ");
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}
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}
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common_val_print (val, stream, 0, &opts, current_language);
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}
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static void
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show_pascal_static_field_print (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Printing of pascal static members is %s.\n"),
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value);
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}
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static struct obstack dont_print_vb_obstack;
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static struct obstack dont_print_statmem_obstack;
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static void pascal_object_print_static_field (struct value *,
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struct ui_file *, int,
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const struct value_print_options *);
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static void pascal_object_print_value (struct value *, struct ui_file *, int,
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const struct value_print_options *,
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struct type **);
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/* It was changed to this after 2.4.5. */
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const char pascal_vtbl_ptr_name[] =
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{'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0};
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/* Return truth value for assertion that TYPE is of the type
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"pointer to virtual function". */
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int
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pascal_object_is_vtbl_ptr_type (struct type *type)
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{
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const char *type_name = TYPE_NAME (type);
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return (type_name != NULL
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&& strcmp (type_name, pascal_vtbl_ptr_name) == 0);
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}
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/* Return truth value for the assertion that TYPE is of the type
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"pointer to virtual function table". */
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int
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pascal_object_is_vtbl_member (struct type *type)
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{
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if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
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{
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type = TYPE_TARGET_TYPE (type);
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if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
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{
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type = TYPE_TARGET_TYPE (type);
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if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* If not using
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thunks. */
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|| TYPE_CODE (type) == TYPE_CODE_PTR) /* If using thunks. */
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{
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/* Virtual functions tables are full of pointers
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to virtual functions. */
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return pascal_object_is_vtbl_ptr_type (type);
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}
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}
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}
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return 0;
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}
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/* Mutually recursive subroutines of pascal_object_print_value and
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pascal_value_print to print out a structure's fields:
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pascal_object_print_value_fields and pascal_object_print_value.
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VAL, STREAM, RECURSE, and OPTIONS have the same meanings as in
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pascal_object_print_value and c_value_print.
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DONT_PRINT is an array of baseclass types that we
|
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should not print, or zero if called from top level. */
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|
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static void
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pascal_object_print_value_fields (struct value *val, struct ui_file *stream,
|
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int recurse,
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const struct value_print_options *options,
|
||
struct type **dont_print_vb,
|
||
int dont_print_statmem)
|
||
{
|
||
int i, len, n_baseclasses;
|
||
char *last_dont_print
|
||
= (char *) obstack_next_free (&dont_print_statmem_obstack);
|
||
|
||
struct type *type = check_typedef (value_type (val));
|
||
|
||
fprintf_filtered (stream, "{");
|
||
len = TYPE_NFIELDS (type);
|
||
n_baseclasses = TYPE_N_BASECLASSES (type);
|
||
|
||
/* Print out baseclasses such that we don't print
|
||
duplicates of virtual baseclasses. */
|
||
if (n_baseclasses > 0)
|
||
pascal_object_print_value (val, stream, recurse + 1,
|
||
options, dont_print_vb);
|
||
|
||
if (!len && n_baseclasses == 1)
|
||
fprintf_styled (stream, metadata_style.style (), "<No data fields>");
|
||
else
|
||
{
|
||
struct obstack tmp_obstack = dont_print_statmem_obstack;
|
||
int fields_seen = 0;
|
||
const gdb_byte *valaddr = value_contents_for_printing (val);
|
||
|
||
if (dont_print_statmem == 0)
|
||
{
|
||
/* If we're at top level, carve out a completely fresh
|
||
chunk of the obstack and use that until this particular
|
||
invocation returns. */
|
||
obstack_finish (&dont_print_statmem_obstack);
|
||
}
|
||
|
||
for (i = n_baseclasses; i < len; i++)
|
||
{
|
||
/* If requested, skip printing of static fields. */
|
||
if (!options->pascal_static_field_print
|
||
&& field_is_static (&TYPE_FIELD (type, i)))
|
||
continue;
|
||
if (fields_seen)
|
||
fprintf_filtered (stream, ", ");
|
||
else if (n_baseclasses > 0)
|
||
{
|
||
if (options->prettyformat)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
fputs_filtered ("members of ", stream);
|
||
fputs_filtered (TYPE_NAME (type), stream);
|
||
fputs_filtered (": ", stream);
|
||
}
|
||
}
|
||
fields_seen = 1;
|
||
|
||
if (options->prettyformat)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
else
|
||
{
|
||
wrap_here (n_spaces (2 + 2 * recurse));
|
||
}
|
||
|
||
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
||
|
||
if (field_is_static (&TYPE_FIELD (type, i)))
|
||
{
|
||
fputs_filtered ("static ", stream);
|
||
fprintf_symbol_filtered (stream,
|
||
TYPE_FIELD_NAME (type, i),
|
||
current_language->la_language,
|
||
DMGL_PARAMS | DMGL_ANSI);
|
||
}
|
||
else
|
||
fputs_styled (TYPE_FIELD_NAME (type, i),
|
||
variable_name_style.style (), stream);
|
||
annotate_field_name_end ();
|
||
fputs_filtered (" = ", stream);
|
||
annotate_field_value ();
|
||
|
||
if (!field_is_static (&TYPE_FIELD (type, i))
|
||
&& TYPE_FIELD_PACKED (type, i))
|
||
{
|
||
struct value *v;
|
||
|
||
/* Bitfields require special handling, especially due to byte
|
||
order problems. */
|
||
if (TYPE_FIELD_IGNORE (type, i))
|
||
{
|
||
fputs_styled ("<optimized out or zero length>",
|
||
metadata_style.style (), stream);
|
||
}
|
||
else if (value_bits_synthetic_pointer (val,
|
||
TYPE_FIELD_BITPOS (type,
|
||
i),
|
||
TYPE_FIELD_BITSIZE (type,
|
||
i)))
|
||
{
|
||
fputs_styled (_("<synthetic pointer>"),
|
||
metadata_style.style (), stream);
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
v = value_field_bitfield (type, i, valaddr, 0, val);
|
||
|
||
opts.deref_ref = 0;
|
||
common_val_print (v, stream, recurse + 1, &opts,
|
||
current_language);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (TYPE_FIELD_IGNORE (type, i))
|
||
{
|
||
fputs_styled ("<optimized out or zero length>",
|
||
metadata_style.style (), stream);
|
||
}
|
||
else if (field_is_static (&TYPE_FIELD (type, i)))
|
||
{
|
||
/* struct value *v = value_static_field (type, i);
|
||
v4.17 specific. */
|
||
struct value *v;
|
||
|
||
v = value_field_bitfield (type, i, valaddr, 0, val);
|
||
|
||
if (v == NULL)
|
||
val_print_optimized_out (NULL, stream);
|
||
else
|
||
pascal_object_print_static_field (v, stream, recurse + 1,
|
||
options);
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.deref_ref = 0;
|
||
|
||
struct value *v = value_primitive_field (val, 0, i,
|
||
value_type (val));
|
||
common_val_print (v, stream, recurse + 1, &opts,
|
||
current_language);
|
||
}
|
||
}
|
||
annotate_field_end ();
|
||
}
|
||
|
||
if (dont_print_statmem == 0)
|
||
{
|
||
/* Free the space used to deal with the printing
|
||
of the members from top level. */
|
||
obstack_free (&dont_print_statmem_obstack, last_dont_print);
|
||
dont_print_statmem_obstack = tmp_obstack;
|
||
}
|
||
|
||
if (options->prettyformat)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 * recurse, stream);
|
||
}
|
||
}
|
||
fprintf_filtered (stream, "}");
|
||
}
|
||
|
||
/* Special val_print routine to avoid printing multiple copies of virtual
|
||
baseclasses. */
|
||
|
||
static void
|
||
pascal_object_print_value (struct value *val, struct ui_file *stream,
|
||
int recurse,
|
||
const struct value_print_options *options,
|
||
struct type **dont_print_vb)
|
||
{
|
||
struct type **last_dont_print
|
||
= (struct type **) obstack_next_free (&dont_print_vb_obstack);
|
||
struct obstack tmp_obstack = dont_print_vb_obstack;
|
||
struct type *type = check_typedef (value_type (val));
|
||
int i, n_baseclasses = TYPE_N_BASECLASSES (type);
|
||
|
||
if (dont_print_vb == 0)
|
||
{
|
||
/* If we're at top level, carve out a completely fresh
|
||
chunk of the obstack and use that until this particular
|
||
invocation returns. */
|
||
/* Bump up the high-water mark. Now alpha is omega. */
|
||
obstack_finish (&dont_print_vb_obstack);
|
||
}
|
||
|
||
for (i = 0; i < n_baseclasses; i++)
|
||
{
|
||
LONGEST boffset = 0;
|
||
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
||
const char *basename = TYPE_NAME (baseclass);
|
||
int skip = 0;
|
||
|
||
if (BASETYPE_VIA_VIRTUAL (type, i))
|
||
{
|
||
struct type **first_dont_print
|
||
= (struct type **) obstack_base (&dont_print_vb_obstack);
|
||
|
||
int j = (struct type **) obstack_next_free (&dont_print_vb_obstack)
|
||
- first_dont_print;
|
||
|
||
while (--j >= 0)
|
||
if (baseclass == first_dont_print[j])
|
||
goto flush_it;
|
||
|
||
obstack_ptr_grow (&dont_print_vb_obstack, baseclass);
|
||
}
|
||
|
||
struct value *base_value;
|
||
try
|
||
{
|
||
base_value = value_primitive_field (val, 0, i, type);
|
||
}
|
||
catch (const gdb_exception_error &ex)
|
||
{
|
||
base_value = nullptr;
|
||
if (ex.error == NOT_AVAILABLE_ERROR)
|
||
skip = -1;
|
||
else
|
||
skip = 1;
|
||
}
|
||
|
||
if (skip == 0)
|
||
{
|
||
/* The virtual base class pointer might have been clobbered by the
|
||
user program. Make sure that it still points to a valid memory
|
||
location. */
|
||
|
||
if (boffset < 0 || boffset >= TYPE_LENGTH (type))
|
||
{
|
||
CORE_ADDR address= value_address (val);
|
||
gdb::byte_vector buf (TYPE_LENGTH (baseclass));
|
||
|
||
if (target_read_memory (address + boffset, buf.data (),
|
||
TYPE_LENGTH (baseclass)) != 0)
|
||
skip = 1;
|
||
base_value = value_from_contents_and_address (baseclass,
|
||
buf.data (),
|
||
address + boffset);
|
||
baseclass = value_type (base_value);
|
||
boffset = 0;
|
||
}
|
||
}
|
||
|
||
if (options->prettyformat)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 * recurse, stream);
|
||
}
|
||
fputs_filtered ("<", stream);
|
||
/* Not sure what the best notation is in the case where there is no
|
||
baseclass name. */
|
||
|
||
fputs_filtered (basename ? basename : "", stream);
|
||
fputs_filtered ("> = ", stream);
|
||
|
||
if (skip < 0)
|
||
val_print_unavailable (stream);
|
||
else if (skip > 0)
|
||
val_print_invalid_address (stream);
|
||
else
|
||
pascal_object_print_value_fields
|
||
(base_value, stream, recurse, options,
|
||
(struct type **) obstack_base (&dont_print_vb_obstack),
|
||
0);
|
||
fputs_filtered (", ", stream);
|
||
|
||
flush_it:
|
||
;
|
||
}
|
||
|
||
if (dont_print_vb == 0)
|
||
{
|
||
/* Free the space used to deal with the printing
|
||
of this type from top level. */
|
||
obstack_free (&dont_print_vb_obstack, last_dont_print);
|
||
/* Reset watermark so that we can continue protecting
|
||
ourselves from whatever we were protecting ourselves. */
|
||
dont_print_vb_obstack = tmp_obstack;
|
||
}
|
||
}
|
||
|
||
/* Print value of a static member.
|
||
To avoid infinite recursion when printing a class that contains
|
||
a static instance of the class, we keep the addresses of all printed
|
||
static member classes in an obstack and refuse to print them more
|
||
than once.
|
||
|
||
VAL contains the value to print, STREAM, RECURSE, and OPTIONS
|
||
have the same meanings as in c_val_print. */
|
||
|
||
static void
|
||
pascal_object_print_static_field (struct value *val,
|
||
struct ui_file *stream,
|
||
int recurse,
|
||
const struct value_print_options *options)
|
||
{
|
||
struct type *type = value_type (val);
|
||
struct value_print_options opts;
|
||
|
||
if (value_entirely_optimized_out (val))
|
||
{
|
||
val_print_optimized_out (val, stream);
|
||
return;
|
||
}
|
||
|
||
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|
||
{
|
||
CORE_ADDR *first_dont_print, addr;
|
||
int i;
|
||
|
||
first_dont_print
|
||
= (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack);
|
||
i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack)
|
||
- first_dont_print;
|
||
|
||
while (--i >= 0)
|
||
{
|
||
if (value_address (val) == first_dont_print[i])
|
||
{
|
||
fputs_styled (_("\
|
||
<same as static member of an already seen type>"),
|
||
metadata_style.style (), stream);
|
||
return;
|
||
}
|
||
}
|
||
|
||
addr = value_address (val);
|
||
obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
|
||
sizeof (CORE_ADDR));
|
||
|
||
type = check_typedef (type);
|
||
pascal_object_print_value_fields (val, stream, recurse,
|
||
options, NULL, 1);
|
||
return;
|
||
}
|
||
|
||
opts = *options;
|
||
opts.deref_ref = 0;
|
||
common_val_print (val, stream, recurse, &opts, current_language);
|
||
}
|
||
|
||
void _initialize_pascal_valprint ();
|
||
void
|
||
_initialize_pascal_valprint ()
|
||
{
|
||
add_setshow_boolean_cmd ("pascal_static-members", class_support,
|
||
&user_print_options.pascal_static_field_print, _("\
|
||
Set printing of pascal static members."), _("\
|
||
Show printing of pascal static members."), NULL,
|
||
NULL,
|
||
show_pascal_static_field_print,
|
||
&setprintlist, &showprintlist);
|
||
}
|