c45f11dab9
* Fix PR pascal/2283 p-valprint.c (pascal_val_print): correct current language check. Also print array of char as strings.
963 lines
28 KiB
C
963 lines
28 KiB
C
/* Support for printing Pascal values for GDB, the GNU debugger.
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Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007
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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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/* Print data of type TYPE located at VALADDR (within GDB), which came from
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the inferior at address ADDRESS, onto stdio stream STREAM according to
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FORMAT (a letter or 0 for natural format). The data at VALADDR is in
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target byte order.
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If the data are a string pointer, returns the number of string characters
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printed.
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If DEREF_REF is nonzero, then dereference references, otherwise just print
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them like pointers.
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The PRETTY parameter controls prettyprinting. */
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int
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pascal_val_print (struct type *type, const gdb_byte *valaddr,
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int embedded_offset, CORE_ADDR address,
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struct ui_file *stream, int format, int deref_ref,
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int recurse, enum val_prettyprint pretty)
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{
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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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int char_size;
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LONGEST val;
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CORE_ADDR addr;
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CHECK_TYPEDEF (type);
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_ARRAY:
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if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
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{
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elttype = check_typedef (TYPE_TARGET_TYPE (type));
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eltlen = TYPE_LENGTH (elttype);
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len = TYPE_LENGTH (type) / eltlen;
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if (prettyprint_arrays)
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{
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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/* For an array of chars, print with string syntax. */
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if (eltlen == 1
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&& ((TYPE_CODE (elttype) == TYPE_CODE_INT)
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|| ((current_language->la_language == language_pascal)
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&& (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
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&& (format == 0 || format == 's'))
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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 (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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(valaddr + embedded_offset)[temp_len]
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&& temp_len < len && temp_len < 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, valaddr + embedded_offset, len, 1, 0);
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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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val_print_array_elements (type, valaddr + embedded_offset, address, stream,
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format, deref_ref, recurse, pretty, 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 = address;
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goto print_unpacked_pointer;
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case TYPE_CODE_PTR:
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if (format && format != 's')
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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break;
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}
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if (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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print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)),
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stream, demangle);
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break;
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}
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elttype = check_typedef (TYPE_TARGET_TYPE (type));
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{
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addr = unpack_pointer (type, valaddr + embedded_offset);
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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 (addr, stream, demangle);
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/* Return value is irrelevant except for string pointers. */
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return (0);
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}
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if (addressprint && format != 's')
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{
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fputs_filtered (paddress (addr), stream);
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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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&& (format == 0 || format == 's')
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&& addr != 0)
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{
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/* no wide string yet */
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i = val_print_string (addr, -1, 1, stream);
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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_size, NULL)
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&& addr != 0)
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{
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ULONGEST string_length;
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void *buffer;
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buffer = 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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xfree (buffer);
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i = val_print_string (addr + string_pos, string_length, char_size, stream);
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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 + embedded_offset);
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struct minimal_symbol *msymbol =
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lookup_minimal_symbol_by_pc (vt_address);
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if ((msymbol != NULL)
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&& (vt_address == SYMBOL_VALUE_ADDRESS (msymbol)))
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{
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fputs_filtered (" <", stream);
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fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream);
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fputs_filtered (">", stream);
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}
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if (vt_address && vtblprint)
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{
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struct value *vt_val;
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struct symbol *wsym = (struct symbol *) NULL;
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struct type *wtype;
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struct block *block = (struct block *) NULL;
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int is_this_fld;
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if (msymbol != NULL)
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wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block,
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VAR_DOMAIN, &is_this_fld, NULL);
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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, format, deref_ref,
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recurse + 1, pretty);
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if (pretty)
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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 number of characters printed, including the terminating
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'\0' if we reached the end. val_print_string takes care including
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the terminating '\0' if necessary. */
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return i;
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}
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break;
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case TYPE_CODE_REF:
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elttype = check_typedef (TYPE_TARGET_TYPE (type));
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if (addressprint)
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{
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fprintf_filtered (stream, "@");
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/* Extract the address, assume that it is unsigned. */
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fputs_filtered (paddress (
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extract_unsigned_integer (valaddr + embedded_offset,
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gdbarch_ptr_bit (current_gdbarch) / HOST_CHAR_BIT)), stream);
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if (deref_ref)
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fputs_filtered (": ", stream);
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}
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/* De-reference the reference. */
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if (deref_ref)
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{
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if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
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{
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struct value *deref_val =
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value_at
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(TYPE_TARGET_TYPE (type),
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unpack_pointer (lookup_pointer_type (builtin_type_void),
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valaddr + embedded_offset));
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common_val_print (deref_val, stream, format, deref_ref,
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recurse + 1, pretty);
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}
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else
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fputs_filtered ("???", stream);
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}
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break;
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case TYPE_CODE_UNION:
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if (recurse && !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 (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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(extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8,
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TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))),
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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_size, NULL))
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{
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len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size);
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LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 0);
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}
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else
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pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format,
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recurse, pretty, NULL, 0);
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}
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break;
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case TYPE_CODE_ENUM:
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if (format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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break;
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}
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len = TYPE_NFIELDS (type);
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val = unpack_long (type, valaddr + embedded_offset);
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for (i = 0; i < len; i++)
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{
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QUIT;
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if (val == TYPE_FIELD_BITPOS (type, i))
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{
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break;
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}
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}
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if (i < len)
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{
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fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
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}
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else
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{
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print_longest (stream, 'd', 0, val);
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}
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break;
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case TYPE_CODE_FLAGS:
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if (format)
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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else
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val_print_type_code_flags (type, valaddr + embedded_offset, stream);
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break;
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case TYPE_CODE_FUNC:
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if (format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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break;
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}
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/* FIXME, we should consider, at least for ANSI C language, eliminating
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the distinction made between FUNCs and POINTERs to FUNCs. */
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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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/* Try to print what function it points to, and its address. */
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print_address_demangle (address, stream, demangle);
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break;
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case TYPE_CODE_BOOL:
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format = format ? format : output_format;
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if (format)
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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else
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{
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val = unpack_long (type, valaddr + embedded_offset);
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if (val == 0)
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fputs_filtered ("false", stream);
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else if (val == 1)
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fputs_filtered ("true", stream);
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else
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{
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fputs_filtered ("true (", stream);
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fprintf_filtered (stream, "%ld)", (long int) val);
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}
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}
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break;
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case TYPE_CODE_RANGE:
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/* FIXME: create_range_type does not set the unsigned bit in a
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range type (I think it probably should copy it from the target
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type), so we won't print values which are too large to
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fit in a signed integer correctly. */
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/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
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print with the target type, though, because the size of our type
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and the target type might differ). */
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/* FALLTHROUGH */
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case TYPE_CODE_INT:
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format = format ? format : output_format;
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if (format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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}
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else
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{
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val_print_type_code_int (type, valaddr + embedded_offset, stream);
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}
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break;
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case TYPE_CODE_CHAR:
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format = format ? format : output_format;
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if (format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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}
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else
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{
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val = unpack_long (type, valaddr + embedded_offset);
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if (TYPE_UNSIGNED (type))
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fprintf_filtered (stream, "%u", (unsigned int) val);
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else
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fprintf_filtered (stream, "%d", (int) val);
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fputs_filtered (" ", stream);
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LA_PRINT_CHAR ((unsigned char) val, stream);
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}
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break;
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case TYPE_CODE_FLT:
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if (format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream);
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}
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else
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{
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print_floating (valaddr + embedded_offset, type, stream);
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}
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break;
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case TYPE_CODE_BITSTRING:
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case TYPE_CODE_SET:
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elttype = TYPE_INDEX_TYPE (type);
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CHECK_TYPEDEF (elttype);
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if (TYPE_STUB (elttype))
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{
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fprintf_filtered (stream, "<incomplete type>");
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gdb_flush (stream);
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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 i;
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int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
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int need_comma = 0;
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if (is_bitstring)
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fputs_filtered ("B'", stream);
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else
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fputs_filtered ("[", stream);
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i = get_discrete_bounds (range, &low_bound, &high_bound);
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maybe_bad_bstring:
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if (i < 0)
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{
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fputs_filtered ("<error value>", 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 + embedded_offset, 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 (is_bitstring)
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fprintf_filtered (stream, "%d", element);
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else 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 && value_bit_index (type, valaddr + embedded_offset, ++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 + embedded_offset, ++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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if (is_bitstring)
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fputs_filtered ("'", stream);
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else
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fputs_filtered ("]", stream);
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}
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break;
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case TYPE_CODE_VOID:
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fprintf_filtered (stream, "void");
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break;
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case TYPE_CODE_ERROR:
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fprintf_filtered (stream, "<error type>");
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break;
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case TYPE_CODE_UNDEF:
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/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
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dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
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and no complete type for struct foo in that file. */
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fprintf_filtered (stream, "<incomplete type>");
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break;
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default:
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error (_("Invalid pascal type code %d in symbol table."), TYPE_CODE (type));
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}
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gdb_flush (stream);
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return (0);
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}
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int
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pascal_value_print (struct value *val, struct ui_file *stream, int format,
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enum val_prettyprint pretty)
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{
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struct type *type = value_type (val);
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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.
|
||
|
||
Object pascal: if it is a member pointer, we will take care
|
||
of that when we print it. */
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR
|
||
|| TYPE_CODE (type) == TYPE_CODE_REF)
|
||
{
|
||
/* Hack: remove (char *) for char strings. Their
|
||
type is indicated by the quoted string anyway. */
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR
|
||
&& TYPE_NAME (type) == NULL
|
||
&& TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL
|
||
&& strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0)
|
||
{
|
||
/* Print nothing */
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, ") ");
|
||
}
|
||
}
|
||
return common_val_print (val, stream, format, 1, 0, pretty);
|
||
}
|
||
|
||
|
||
/******************************************************************************
|
||
Inserted from cp-valprint
|
||
******************************************************************************/
|
||
|
||
extern int vtblprint; /* Controls printing of vtbl's */
|
||
extern int objectprint; /* Controls looking up an object's derived type
|
||
using what we find in its vtables. */
|
||
static int pascal_static_field_print; /* Controls printing of static fields. */
|
||
static void
|
||
show_pascal_static_field_print (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Printing of pascal static members is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
static struct obstack dont_print_vb_obstack;
|
||
static struct obstack dont_print_statmem_obstack;
|
||
|
||
static void pascal_object_print_static_field (struct value *,
|
||
struct ui_file *, int, int,
|
||
enum val_prettyprint);
|
||
|
||
static void pascal_object_print_value (struct type *, const gdb_byte *,
|
||
CORE_ADDR, struct ui_file *,
|
||
int, int, enum val_prettyprint,
|
||
struct type **);
|
||
|
||
/* It was changed to this after 2.4.5. */
|
||
const char pascal_vtbl_ptr_name[] =
|
||
{'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0};
|
||
|
||
/* Return truth value for assertion that TYPE is of the type
|
||
"pointer to virtual function". */
|
||
|
||
int
|
||
pascal_object_is_vtbl_ptr_type (struct type *type)
|
||
{
|
||
char *typename = type_name_no_tag (type);
|
||
|
||
return (typename != NULL
|
||
&& strcmp (typename, pascal_vtbl_ptr_name) == 0);
|
||
}
|
||
|
||
/* Return truth value for the assertion that TYPE is of the type
|
||
"pointer to virtual function table". */
|
||
|
||
int
|
||
pascal_object_is_vtbl_member (struct type *type)
|
||
{
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
{
|
||
type = TYPE_TARGET_TYPE (type);
|
||
if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
|
||
{
|
||
type = TYPE_TARGET_TYPE (type);
|
||
if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */
|
||
|| TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */
|
||
{
|
||
/* Virtual functions tables are full of pointers
|
||
to virtual functions. */
|
||
return pascal_object_is_vtbl_ptr_type (type);
|
||
}
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Mutually recursive subroutines of pascal_object_print_value and
|
||
c_val_print to print out a structure's fields:
|
||
pascal_object_print_value_fields and pascal_object_print_value.
|
||
|
||
TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
|
||
same meanings as in pascal_object_print_value and c_val_print.
|
||
|
||
DONT_PRINT is an array of baseclass types that we
|
||
should not print, or zero if called from top level. */
|
||
|
||
void
|
||
pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr,
|
||
CORE_ADDR address, struct ui_file *stream,
|
||
int format, int recurse,
|
||
enum val_prettyprint pretty,
|
||
struct type **dont_print_vb,
|
||
int dont_print_statmem)
|
||
{
|
||
int i, len, n_baseclasses;
|
||
char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack);
|
||
|
||
CHECK_TYPEDEF (type);
|
||
|
||
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 (type, valaddr, address, stream,
|
||
format, recurse + 1, pretty, dont_print_vb);
|
||
|
||
if (!len && n_baseclasses == 1)
|
||
fprintf_filtered (stream, "<No data fields>");
|
||
else
|
||
{
|
||
struct obstack tmp_obstack = dont_print_statmem_obstack;
|
||
int fields_seen = 0;
|
||
|
||
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 (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i))
|
||
continue;
|
||
if (fields_seen)
|
||
fprintf_filtered (stream, ", ");
|
||
else if (n_baseclasses > 0)
|
||
{
|
||
if (pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
fputs_filtered ("members of ", stream);
|
||
fputs_filtered (type_name_no_tag (type), stream);
|
||
fputs_filtered (": ", stream);
|
||
}
|
||
}
|
||
fields_seen = 1;
|
||
|
||
if (pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
else
|
||
{
|
||
wrap_here (n_spaces (2 + 2 * recurse));
|
||
}
|
||
if (inspect_it)
|
||
{
|
||
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
||
fputs_filtered ("\"( ptr \"", stream);
|
||
else
|
||
fputs_filtered ("\"( nodef \"", stream);
|
||
if (TYPE_FIELD_STATIC (type, i))
|
||
fputs_filtered ("static ", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus,
|
||
DMGL_PARAMS | DMGL_ANSI);
|
||
fputs_filtered ("\" \"", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus,
|
||
DMGL_PARAMS | DMGL_ANSI);
|
||
fputs_filtered ("\") \"", stream);
|
||
}
|
||
else
|
||
{
|
||
annotate_field_begin (TYPE_FIELD_TYPE (type, i));
|
||
|
||
if (TYPE_FIELD_STATIC (type, i))
|
||
fputs_filtered ("static ", stream);
|
||
fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
|
||
language_cplus,
|
||
DMGL_PARAMS | DMGL_ANSI);
|
||
annotate_field_name_end ();
|
||
fputs_filtered (" = ", stream);
|
||
annotate_field_value ();
|
||
}
|
||
|
||
if (!TYPE_FIELD_STATIC (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_filtered ("<optimized out or zero length>", stream);
|
||
}
|
||
else
|
||
{
|
||
v = value_from_longest (TYPE_FIELD_TYPE (type, i),
|
||
unpack_field_as_long (type, valaddr, i));
|
||
|
||
common_val_print (v, stream, format, 0, recurse + 1, pretty);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (TYPE_FIELD_IGNORE (type, i))
|
||
{
|
||
fputs_filtered ("<optimized out or zero length>", stream);
|
||
}
|
||
else if (TYPE_FIELD_STATIC (type, i))
|
||
{
|
||
/* struct value *v = value_static_field (type, i); v4.17 specific */
|
||
struct value *v;
|
||
v = value_from_longest (TYPE_FIELD_TYPE (type, i),
|
||
unpack_field_as_long (type, valaddr, i));
|
||
|
||
if (v == NULL)
|
||
fputs_filtered ("<optimized out>", stream);
|
||
else
|
||
pascal_object_print_static_field (v, stream, format,
|
||
recurse + 1, pretty);
|
||
}
|
||
else
|
||
{
|
||
/* val_print (TYPE_FIELD_TYPE (type, i),
|
||
valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
|
||
address + TYPE_FIELD_BITPOS (type, i) / 8, 0,
|
||
stream, format, 0, recurse + 1, pretty); */
|
||
val_print (TYPE_FIELD_TYPE (type, i),
|
||
valaddr, TYPE_FIELD_BITPOS (type, i) / 8,
|
||
address + TYPE_FIELD_BITPOS (type, i) / 8,
|
||
stream, format, 0, recurse + 1, pretty);
|
||
}
|
||
}
|
||
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 (pretty)
|
||
{
|
||
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 type *type, const gdb_byte *valaddr,
|
||
CORE_ADDR address, struct ui_file *stream,
|
||
int format, int recurse,
|
||
enum val_prettyprint pretty,
|
||
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;
|
||
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++)
|
||
{
|
||
int boffset;
|
||
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
||
char *basename = type_name_no_tag (baseclass);
|
||
const gdb_byte *base_valaddr;
|
||
|
||
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);
|
||
}
|
||
|
||
boffset = baseclass_offset (type, i, valaddr, address);
|
||
|
||
if (pretty)
|
||
{
|
||
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);
|
||
|
||
/* 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 != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type)))
|
||
{
|
||
/* FIXME (alloc): not safe is baseclass is really really big. */
|
||
gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
|
||
base_valaddr = buf;
|
||
if (target_read_memory (address + boffset, buf,
|
||
TYPE_LENGTH (baseclass)) != 0)
|
||
boffset = -1;
|
||
}
|
||
else
|
||
base_valaddr = valaddr + boffset;
|
||
|
||
if (boffset == -1)
|
||
fprintf_filtered (stream, "<invalid address>");
|
||
else
|
||
pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset,
|
||
stream, format, recurse, pretty,
|
||
(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 PRETTY
|
||
have the same meanings as in c_val_print. */
|
||
|
||
static void
|
||
pascal_object_print_static_field (struct value *val,
|
||
struct ui_file *stream, int format,
|
||
int recurse, enum val_prettyprint pretty)
|
||
{
|
||
struct type *type = value_type (val);
|
||
|
||
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|
||
{
|
||
CORE_ADDR *first_dont_print;
|
||
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_filtered ("<same as static member of an already seen type>",
|
||
stream);
|
||
return;
|
||
}
|
||
}
|
||
|
||
obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val),
|
||
sizeof (CORE_ADDR));
|
||
|
||
CHECK_TYPEDEF (type);
|
||
pascal_object_print_value_fields (type, value_contents (val), VALUE_ADDRESS (val),
|
||
stream, format, recurse, pretty, NULL, 1);
|
||
return;
|
||
}
|
||
common_val_print (val, stream, format, 0, recurse, pretty);
|
||
}
|
||
|
||
extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */
|
||
|
||
void
|
||
_initialize_pascal_valprint (void)
|
||
{
|
||
add_setshow_boolean_cmd ("pascal_static-members", class_support,
|
||
&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);
|
||
/* Turn on printing of static fields. */
|
||
pascal_static_field_print = 1;
|
||
|
||
}
|