mirror of
https://sourceware.org/git/binutils-gdb.git
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df86565b31
Remove the macro, replace all uses with calls to type::length. Change-Id: Ib9bdc954576860b21190886534c99103d6a47afb
470 lines
12 KiB
C
470 lines
12 KiB
C
/* Support for printing Modula 2 values for GDB, the GNU debugger.
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Copyright (C) 1986-2022 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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#include "defs.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 "valprint.h"
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#include "language.h"
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#include "typeprint.h"
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#include "c-lang.h"
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#include "m2-lang.h"
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#include "target.h"
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#include "cli/cli-style.h"
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static int print_unpacked_pointer (struct type *type,
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CORE_ADDR address, CORE_ADDR addr,
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const struct value_print_options *options,
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struct ui_file *stream);
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static void
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m2_print_array_contents (struct value *val,
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struct ui_file *stream, int recurse,
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const struct value_print_options *options,
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int len);
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/* get_long_set_bounds - assigns the bounds of the long set to low and
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high. */
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int
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get_long_set_bounds (struct type *type, LONGEST *low, LONGEST *high)
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{
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int len, i;
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if (type->code () == TYPE_CODE_STRUCT)
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{
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len = type->num_fields ();
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i = TYPE_N_BASECLASSES (type);
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if (len == 0)
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return 0;
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*low = type->field (i).type ()->bounds ()->low.const_val ();
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*high = type->field (len - 1).type ()->bounds ()->high.const_val ();
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return 1;
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}
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error (_("expecting long_set"));
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return 0;
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}
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static void
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m2_print_long_set (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)
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{
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int empty_set = 1;
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int element_seen = 0;
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LONGEST previous_low = 0;
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LONGEST previous_high= 0;
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LONGEST i, low_bound, high_bound;
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LONGEST field_low, field_high;
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struct type *range;
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int len, field;
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struct type *target;
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int bitval;
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type = check_typedef (type);
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gdb_printf (stream, "{");
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len = type->num_fields ();
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if (get_long_set_bounds (type, &low_bound, &high_bound))
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{
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field = TYPE_N_BASECLASSES (type);
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range = type->field (field).type ()->index_type ();
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}
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else
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{
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fprintf_styled (stream, metadata_style.style (),
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" %s }", _("<unknown bounds of set>"));
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return;
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}
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target = range->target_type ();
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if (get_discrete_bounds (range, &field_low, &field_high))
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{
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for (i = low_bound; i <= high_bound; i++)
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{
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bitval = value_bit_index (type->field (field).type (),
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(type->field (field).loc_bitpos () / 8) +
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valaddr + embedded_offset, i);
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if (bitval < 0)
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error (_("bit test is out of range"));
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else if (bitval > 0)
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{
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previous_high = i;
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if (! element_seen)
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{
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if (! empty_set)
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gdb_printf (stream, ", ");
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print_type_scalar (target, i, stream);
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empty_set = 0;
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element_seen = 1;
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previous_low = i;
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}
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}
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else
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{
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/* bit is not set */
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if (element_seen)
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{
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if (previous_low+1 < previous_high)
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gdb_printf (stream, "..");
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if (previous_low+1 < previous_high)
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print_type_scalar (target, previous_high, stream);
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element_seen = 0;
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}
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}
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if (i == field_high)
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{
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field++;
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if (field == len)
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break;
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range = type->field (field).type ()->index_type ();
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if (!get_discrete_bounds (range, &field_low, &field_high))
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break;
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target = range->target_type ();
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}
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}
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if (element_seen)
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{
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if (previous_low+1 < previous_high)
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{
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gdb_printf (stream, "..");
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print_type_scalar (target, previous_high, stream);
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}
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element_seen = 0;
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}
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gdb_printf (stream, "}");
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}
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}
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static void
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m2_print_unbounded_array (struct value *value,
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struct ui_file *stream, int recurse,
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const struct value_print_options *options)
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{
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CORE_ADDR addr;
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LONGEST len;
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struct value *val;
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struct type *type = check_typedef (value_type (value));
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const gdb_byte *valaddr = value_contents_for_printing (value).data ();
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addr = unpack_pointer (type->field (0).type (),
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(type->field (0).loc_bitpos () / 8) +
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valaddr);
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val = value_at_lazy (type->field (0).type ()->target_type (),
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addr);
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len = unpack_field_as_long (type, valaddr, 1);
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gdb_printf (stream, "{");
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m2_print_array_contents (val, stream, recurse, options, len);
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gdb_printf (stream, ", HIGH = %d}", (int) len);
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}
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static int
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print_unpacked_pointer (struct type *type,
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CORE_ADDR address, CORE_ADDR addr,
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const struct value_print_options *options,
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struct ui_file *stream)
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{
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struct gdbarch *gdbarch = type->arch ();
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struct type *elttype = check_typedef (type->target_type ());
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int want_space = 0;
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if (elttype->code () == TYPE_CODE_FUNC)
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{
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/* Try to print what function it points to. */
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print_function_pointer_address (options, gdbarch, addr, stream);
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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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gdb_puts (paddress (gdbarch, address), stream);
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want_space = 1;
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}
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/* For a pointer to char or unsigned char, also print the string
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pointed to, unless pointer is null. */
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if (elttype->length () == 1
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&& elttype->code () == TYPE_CODE_INT
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&& (options->format == 0 || options->format == 's')
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&& addr != 0)
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{
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if (want_space)
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gdb_puts (" ", stream);
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return val_print_string (type->target_type (), NULL, addr, -1,
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stream, options);
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}
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return 0;
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}
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static void
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print_variable_at_address (struct type *type,
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const gdb_byte *valaddr,
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struct ui_file *stream,
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int recurse,
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const struct value_print_options *options)
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{
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struct gdbarch *gdbarch = type->arch ();
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CORE_ADDR addr = unpack_pointer (type, valaddr);
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struct type *elttype = check_typedef (type->target_type ());
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gdb_printf (stream, "[");
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gdb_puts (paddress (gdbarch, addr), stream);
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gdb_printf (stream, "] : ");
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if (elttype->code () != TYPE_CODE_UNDEF)
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{
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struct value *deref_val =
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value_at (type->target_type (), unpack_pointer (type, valaddr));
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common_val_print (deref_val, stream, recurse, options, current_language);
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}
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else
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gdb_puts ("???", stream);
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}
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/* m2_print_array_contents - prints out the contents of an
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array up to a max_print values.
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It prints arrays of char as a string
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and all other data types as comma
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separated values. */
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static void
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m2_print_array_contents (struct value *val,
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struct ui_file *stream, int recurse,
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const struct value_print_options *options,
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int len)
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{
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struct type *type = check_typedef (value_type (val));
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if (type->length () > 0)
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{
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/* For an array of chars, print with string syntax. */
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if (type->length () == 1 &&
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((type->code () == TYPE_CODE_INT)
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|| ((current_language->la_language == language_m2)
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&& (type->code () == TYPE_CODE_CHAR)))
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&& (options->format == 0 || options->format == 's'))
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val_print_string (type, NULL, value_address (val), len+1, stream,
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options);
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else
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{
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gdb_printf (stream, "{");
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value_print_array_elements (val, stream, recurse, options, 0);
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gdb_printf (stream, "}");
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}
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}
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}
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/* Decorations for Modula 2. */
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static const struct generic_val_print_decorations m2_decorations =
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{
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"",
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" + ",
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" * I",
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"TRUE",
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"FALSE",
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"void",
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"{",
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"}"
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};
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/* See m2-lang.h. */
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void
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m2_language::value_print_inner (struct value *val, struct ui_file *stream,
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int recurse,
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const struct value_print_options *options) const
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{
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unsigned len;
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struct type *elttype;
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CORE_ADDR addr;
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const gdb_byte *valaddr = value_contents_for_printing (val).data ();
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const CORE_ADDR address = value_address (val);
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struct type *type = check_typedef (value_type (val));
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switch (type->code ())
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{
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case TYPE_CODE_ARRAY:
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if (type->length () > 0 && type->target_type ()->length () > 0)
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{
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elttype = check_typedef (type->target_type ());
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len = type->length () / elttype->length ();
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/* For an array of chars, print with string syntax. */
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if (elttype->length () == 1 &&
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((elttype->code () == TYPE_CODE_INT)
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|| ((current_language->la_language == language_m2)
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&& (elttype->code () == TYPE_CODE_CHAR)))
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&& (options->format == 0 || options->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 (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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(valaddr[temp_len]
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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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printstr (stream, type->target_type (), valaddr, len,
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NULL, 0, options);
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}
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else
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{
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gdb_printf (stream, "{");
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value_print_array_elements (val, stream, recurse,
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options, 0);
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gdb_printf (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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print_unpacked_pointer (type, address, address, options, stream);
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break;
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case TYPE_CODE_PTR:
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if (TYPE_CONST (type))
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print_variable_at_address (type, valaddr, stream, recurse, options);
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else if (options->format && options->format != 's')
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value_print_scalar_formatted (val, options, 0, stream);
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else
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{
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addr = unpack_pointer (type, valaddr);
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print_unpacked_pointer (type, addr, address, options, 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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gdb_printf (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 (m2_is_long_set (type))
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m2_print_long_set (type, valaddr, 0, address, stream);
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else if (m2_is_unbounded_array (type))
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m2_print_unbounded_array (val, stream, recurse, options);
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else
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cp_print_value_fields (val, stream, recurse, options, NULL, 0);
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break;
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case TYPE_CODE_SET:
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elttype = type->index_type ();
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elttype = check_typedef (elttype);
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if (elttype->is_stub ())
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{
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fprintf_styled (stream, metadata_style.style (),
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_("<incomplete type>"));
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break;
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}
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else
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{
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struct type *range = elttype;
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LONGEST low_bound, high_bound;
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int i;
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int need_comma = 0;
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gdb_puts ("{", stream);
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i = get_discrete_bounds (range, &low_bound, &high_bound) ? 0 : -1;
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maybe_bad_bstring:
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if (i < 0)
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{
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fputs_styled (_("<error value>"), metadata_style.style (),
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stream);
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goto done;
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}
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for (i = low_bound; i <= high_bound; i++)
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{
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int element = value_bit_index (type, valaddr, i);
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if (element < 0)
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{
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i = element;
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goto maybe_bad_bstring;
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}
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if (element)
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{
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if (need_comma)
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gdb_puts (", ", stream);
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print_type_scalar (range, i, stream);
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need_comma = 1;
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if (i + 1 <= high_bound
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&& value_bit_index (type, valaddr, ++i))
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{
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int j = i;
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gdb_puts ("..", stream);
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while (i + 1 <= high_bound
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&& value_bit_index (type, valaddr, ++i))
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j = i;
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print_type_scalar (range, j, stream);
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}
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}
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}
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done:
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gdb_puts ("}", stream);
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}
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break;
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case TYPE_CODE_RANGE:
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if (type->length () == type->target_type ()->length ())
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{
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struct value *v = value_cast (type->target_type (), val);
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value_print_inner (v, stream, recurse, options);
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break;
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}
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/* FALLTHROUGH */
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case TYPE_CODE_REF:
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case TYPE_CODE_ENUM:
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case TYPE_CODE_FUNC:
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case TYPE_CODE_INT:
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case TYPE_CODE_FLT:
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case TYPE_CODE_METHOD:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_BOOL:
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case TYPE_CODE_CHAR:
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default:
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generic_value_print (val, stream, recurse, options, &m2_decorations);
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break;
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}
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}
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