1072 lines
30 KiB
C
1072 lines
30 KiB
C
/* Support for printing Pascal values for GDB, the GNU debugger.
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Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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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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|
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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 "exceptions.h"
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/* See val_print for a description of the various parameters of this
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function; they are identical. The semantics of the return value is
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also identical to val_print. */
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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 recurse,
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const struct value *original_value,
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||
const struct value_print_options *options)
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{
|
||
struct gdbarch *gdbarch = get_type_arch (type);
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||
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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||
unsigned int i = 0; /* Number of characters printed */
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||
unsigned len;
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||
LONGEST low_bound, high_bound;
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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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||
LONGEST val;
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CORE_ADDR addr;
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||
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CHECK_TYPEDEF (type);
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||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_ARRAY:
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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->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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/* 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 + embedded_offset +
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temp_len * eltlen, eltlen,
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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 + embedded_offset, len, NULL, 0,
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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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val_print_array_elements (type, valaddr, embedded_offset,
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address, stream, recurse,
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original_value, 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 = address + embedded_offset;
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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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val_print_scalar_formatted (type, valaddr, embedded_offset,
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original_value, 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 + embedded_offset,
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TYPE_LENGTH (type), byte_order);
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print_address_demangle (gdbarch, addr, 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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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 (gdbarch, 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 (options->addressprint && options->format != 's')
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{
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fputs_filtered (paddress (gdbarch, 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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|| ((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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/* 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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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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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,
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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 && options->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);
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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->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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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 (options->addressprint)
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{
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CORE_ADDR addr
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= extract_typed_address (valaddr + embedded_offset, type);
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fprintf_filtered (stream, "@");
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fputs_filtered (paddress (gdbarch, addr), stream);
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if (options->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 (options->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 (type, valaddr + embedded_offset));
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common_val_print (deref_val, stream, recurse + 1, options,
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current_language);
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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 && !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
|
||
-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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(gdbarch,
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extract_unsigned_integer (valaddr + embedded_offset
|
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+ TYPE_FIELD_BITPOS (type,
|
||
VTBL_FNADDR_OFFSET) / 8,
|
||
TYPE_LENGTH (TYPE_FIELD_TYPE (type,
|
||
VTBL_FNADDR_OFFSET)),
|
||
byte_order),
|
||
stream, demangle);
|
||
}
|
||
else
|
||
{
|
||
if (is_pascal_string_type (type, &length_pos, &length_size,
|
||
&string_pos, &char_type, NULL))
|
||
{
|
||
len = extract_unsigned_integer (valaddr + embedded_offset
|
||
+ length_pos, length_size,
|
||
byte_order);
|
||
LA_PRINT_STRING (stream, char_type,
|
||
valaddr + embedded_offset + string_pos,
|
||
len, NULL, 0, options);
|
||
}
|
||
else
|
||
pascal_object_print_value_fields (type, valaddr, embedded_offset,
|
||
address, stream, recurse,
|
||
original_value, options,
|
||
NULL, 0);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_ENUM:
|
||
if (options->format)
|
||
{
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
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original_value, options, 0, stream);
|
||
break;
|
||
}
|
||
len = TYPE_NFIELDS (type);
|
||
val = unpack_long (type, valaddr + embedded_offset);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
QUIT;
|
||
if (val == TYPE_FIELD_BITPOS (type, i))
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
if (i < len)
|
||
{
|
||
fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
|
||
}
|
||
else
|
||
{
|
||
print_longest (stream, 'd', 0, val);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_FLAGS:
|
||
if (options->format)
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, options, 0, stream);
|
||
else
|
||
val_print_type_code_flags (type, valaddr + embedded_offset, stream);
|
||
break;
|
||
|
||
case TYPE_CODE_FUNC:
|
||
if (options->format)
|
||
{
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, options, 0, stream);
|
||
break;
|
||
}
|
||
/* FIXME, we should consider, at least for ANSI C language, eliminating
|
||
the distinction made between FUNCs and POINTERs to FUNCs. */
|
||
fprintf_filtered (stream, "{");
|
||
type_print (type, "", stream, -1);
|
||
fprintf_filtered (stream, "} ");
|
||
/* Try to print what function it points to, and its address. */
|
||
print_address_demangle (gdbarch, address, stream, demangle);
|
||
break;
|
||
|
||
case TYPE_CODE_BOOL:
|
||
if (options->format || options->output_format)
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.format = (options->format ? options->format
|
||
: options->output_format);
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, &opts, 0, stream);
|
||
}
|
||
else
|
||
{
|
||
val = unpack_long (type, valaddr + embedded_offset);
|
||
if (val == 0)
|
||
fputs_filtered ("false", stream);
|
||
else if (val == 1)
|
||
fputs_filtered ("true", stream);
|
||
else
|
||
{
|
||
fputs_filtered ("true (", stream);
|
||
fprintf_filtered (stream, "%ld)", (long int) val);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_RANGE:
|
||
/* FIXME: create_range_type does not set the unsigned bit in a
|
||
range type (I think it probably should copy it from the target
|
||
type), so we won't print values which are too large to
|
||
fit in a signed integer correctly. */
|
||
/* FIXME: Doesn't handle ranges of enums correctly. (Can't just
|
||
print with the target type, though, because the size of our type
|
||
and the target type might differ). */
|
||
/* FALLTHROUGH */
|
||
|
||
case TYPE_CODE_INT:
|
||
if (options->format || options->output_format)
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.format = (options->format ? options->format
|
||
: options->output_format);
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, &opts, 0, stream);
|
||
}
|
||
else
|
||
{
|
||
val_print_type_code_int (type, valaddr + embedded_offset, stream);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_CHAR:
|
||
if (options->format || options->output_format)
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.format = (options->format ? options->format
|
||
: options->output_format);
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, &opts, 0, stream);
|
||
}
|
||
else
|
||
{
|
||
val = unpack_long (type, valaddr + embedded_offset);
|
||
if (TYPE_UNSIGNED (type))
|
||
fprintf_filtered (stream, "%u", (unsigned int) val);
|
||
else
|
||
fprintf_filtered (stream, "%d", (int) val);
|
||
fputs_filtered (" ", stream);
|
||
LA_PRINT_CHAR ((unsigned char) val, type, stream);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_FLT:
|
||
if (options->format)
|
||
{
|
||
val_print_scalar_formatted (type, valaddr, embedded_offset,
|
||
original_value, options, 0, stream);
|
||
}
|
||
else
|
||
{
|
||
print_floating (valaddr + embedded_offset, type, stream);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_BITSTRING:
|
||
case TYPE_CODE_SET:
|
||
elttype = TYPE_INDEX_TYPE (type);
|
||
CHECK_TYPEDEF (elttype);
|
||
if (TYPE_STUB (elttype))
|
||
{
|
||
fprintf_filtered (stream, "<incomplete type>");
|
||
gdb_flush (stream);
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
struct type *range = elttype;
|
||
LONGEST low_bound, high_bound;
|
||
int i;
|
||
int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
|
||
int need_comma = 0;
|
||
|
||
if (is_bitstring)
|
||
fputs_filtered ("B'", stream);
|
||
else
|
||
fputs_filtered ("[", stream);
|
||
|
||
i = get_discrete_bounds (range, &low_bound, &high_bound);
|
||
if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0)
|
||
{
|
||
/* If we know the size of the set type, we can figure out the
|
||
maximum value. */
|
||
i = 0;
|
||
high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1;
|
||
TYPE_HIGH_BOUND (range) = high_bound;
|
||
}
|
||
maybe_bad_bstring:
|
||
if (i < 0)
|
||
{
|
||
fputs_filtered ("<error value>", stream);
|
||
goto done;
|
||
}
|
||
|
||
for (i = low_bound; i <= high_bound; i++)
|
||
{
|
||
int element = value_bit_index (type,
|
||
valaddr + embedded_offset, i);
|
||
|
||
if (element < 0)
|
||
{
|
||
i = element;
|
||
goto maybe_bad_bstring;
|
||
}
|
||
if (is_bitstring)
|
||
fprintf_filtered (stream, "%d", element);
|
||
else if (element)
|
||
{
|
||
if (need_comma)
|
||
fputs_filtered (", ", stream);
|
||
print_type_scalar (range, i, stream);
|
||
need_comma = 1;
|
||
|
||
if (i + 1 <= high_bound
|
||
&& value_bit_index (type,
|
||
valaddr + embedded_offset, ++i))
|
||
{
|
||
int j = i;
|
||
|
||
fputs_filtered ("..", stream);
|
||
while (i + 1 <= high_bound
|
||
&& value_bit_index (type,
|
||
valaddr + embedded_offset,
|
||
++i))
|
||
j = i;
|
||
print_type_scalar (range, j, stream);
|
||
}
|
||
}
|
||
}
|
||
done:
|
||
if (is_bitstring)
|
||
fputs_filtered ("'", stream);
|
||
else
|
||
fputs_filtered ("]", stream);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_VOID:
|
||
fprintf_filtered (stream, "void");
|
||
break;
|
||
|
||
case TYPE_CODE_ERROR:
|
||
fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
|
||
break;
|
||
|
||
case TYPE_CODE_UNDEF:
|
||
/* This happens (without TYPE_FLAG_STUB set) on systems which don't use
|
||
dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
|
||
and no complete type for struct foo in that file. */
|
||
fprintf_filtered (stream, "<incomplete type>");
|
||
break;
|
||
|
||
default:
|
||
error (_("Invalid pascal type code %d in symbol table."),
|
||
TYPE_CODE (type));
|
||
}
|
||
gdb_flush (stream);
|
||
return (0);
|
||
}
|
||
|
||
int
|
||
pascal_value_print (struct value *val, struct ui_file *stream,
|
||
const struct value_print_options *options)
|
||
{
|
||
struct type *type = value_type (val);
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.deref_ref = 1;
|
||
|
||
/* If it is a pointer, indicate what it points to.
|
||
|
||
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, 0, &opts, current_language);
|
||
}
|
||
|
||
|
||
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,
|
||
const struct value_print_options *);
|
||
|
||
static void pascal_object_print_value (struct type *, const gdb_byte *,
|
||
int,
|
||
CORE_ADDR, struct ui_file *, int,
|
||
const struct value *,
|
||
const struct value_print_options *,
|
||
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 OPTIONS 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,
|
||
int offset,
|
||
CORE_ADDR address, struct ui_file *stream,
|
||
int recurse,
|
||
const struct value *val,
|
||
const struct value_print_options *options,
|
||
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, offset, address,
|
||
stream, recurse + 1, val,
|
||
options, 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 (!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->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 (options->pretty)
|
||
{
|
||
fprintf_filtered (stream, "\n");
|
||
print_spaces_filtered (2 + 2 * recurse, stream);
|
||
}
|
||
else
|
||
{
|
||
wrap_here (n_spaces (2 + 2 * recurse));
|
||
}
|
||
if (options->inspect_it)
|
||
{
|
||
if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
|
||
fputs_filtered ("\"( ptr \"", stream);
|
||
else
|
||
fputs_filtered ("\"( nodef \"", stream);
|
||
if (field_is_static (&TYPE_FIELD (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 (field_is_static (&TYPE_FIELD (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 (!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_filtered ("<optimized out or zero length>", stream);
|
||
}
|
||
else if (value_bits_synthetic_pointer (val,
|
||
TYPE_FIELD_BITPOS (type,
|
||
i),
|
||
TYPE_FIELD_BITSIZE (type,
|
||
i)))
|
||
{
|
||
fputs_filtered (_("<synthetic pointer>"), stream);
|
||
}
|
||
else if (!value_bits_valid (val, TYPE_FIELD_BITPOS (type, i),
|
||
TYPE_FIELD_BITSIZE (type, i)))
|
||
{
|
||
val_print_optimized_out (stream);
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
v = value_field_bitfield (type, i, valaddr, offset, val);
|
||
|
||
opts.deref_ref = 0;
|
||
common_val_print (v, stream, recurse + 1, &opts,
|
||
current_language);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (TYPE_FIELD_IGNORE (type, i))
|
||
{
|
||
fputs_filtered ("<optimized out or zero length>", 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, offset, val);
|
||
|
||
if (v == NULL)
|
||
val_print_optimized_out (stream);
|
||
else
|
||
pascal_object_print_static_field (v, stream, recurse + 1,
|
||
options);
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts = *options;
|
||
|
||
opts.deref_ref = 0;
|
||
/* 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, offset + TYPE_FIELD_BITPOS (type, i) / 8,
|
||
address, stream, recurse + 1, val, &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->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,
|
||
int offset,
|
||
CORE_ADDR address, struct ui_file *stream,
|
||
int recurse,
|
||
const struct value *val,
|
||
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;
|
||
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 = 0;
|
||
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
|
||
char *basename = type_name_no_tag (baseclass);
|
||
const gdb_byte *base_valaddr = NULL;
|
||
int thisoffset;
|
||
volatile struct gdb_exception ex;
|
||
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);
|
||
}
|
||
|
||
thisoffset = offset;
|
||
|
||
TRY_CATCH (ex, RETURN_MASK_ERROR)
|
||
{
|
||
boffset = baseclass_offset (type, i, valaddr, offset, address, val);
|
||
}
|
||
if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR)
|
||
skip = -1;
|
||
else if (ex.reason < 0)
|
||
skip = 1;
|
||
else
|
||
{
|
||
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))
|
||
{
|
||
/* 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)
|
||
skip = 1;
|
||
address = address + boffset;
|
||
thisoffset = 0;
|
||
boffset = 0;
|
||
}
|
||
else
|
||
base_valaddr = valaddr;
|
||
}
|
||
|
||
if (options->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);
|
||
|
||
if (skip < 0)
|
||
val_print_unavailable (stream);
|
||
else if (skip > 0)
|
||
val_print_invalid_address (stream);
|
||
else
|
||
pascal_object_print_value_fields (baseclass, base_valaddr,
|
||
thisoffset + boffset, address,
|
||
stream, recurse, val, 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 (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_filtered ("\
|
||
<same as static member of an already seen type>",
|
||
stream);
|
||
return;
|
||
}
|
||
}
|
||
|
||
addr = value_address (val);
|
||
obstack_grow (&dont_print_statmem_obstack, (char *) &addr,
|
||
sizeof (CORE_ADDR));
|
||
|
||
CHECK_TYPEDEF (type);
|
||
pascal_object_print_value_fields (type,
|
||
value_contents_for_printing (val),
|
||
value_embedded_offset (val),
|
||
addr,
|
||
stream, recurse,
|
||
val, options, NULL, 1);
|
||
return;
|
||
}
|
||
|
||
opts = *options;
|
||
opts.deref_ref = 0;
|
||
common_val_print (val, stream, recurse, &opts, current_language);
|
||
}
|
||
|
||
/* -Wmissing-prototypes */
|
||
extern initialize_file_ftype _initialize_pascal_valprint;
|
||
|
||
void
|
||
_initialize_pascal_valprint (void)
|
||
{
|
||
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);
|
||
}
|