mirror of
https://sourceware.org/git/binutils-gdb.git
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be759fcf73
PR python/10705 * python/python-internal.h: Add lazy_string_object_type definition. (create_lazy_string_object, gdbpy_initialize_lazy_string) (gdbpy_is_lazystring, gdbpy_extract_lazy_string): Define. * python/py-value.c (valpy_lazy_string): New function. (convert_value_from_python): Add lazy string conversion. * python/py-prettyprint.c (pretty_print_one_value): Check if return is also a lazy string. (print_string_repr): Add lazy string printing branch. (print_children): Likewise. * python/py-lazy-string.c: New file. Implement lazy strings. * python/python.c (_initialize_python): Call gdbpy_initialize_lazy_string. * varobj.c (value_get_print_value): Add lazy string printing branch. Account for encoding. * c-lang.c (c_printstr): Account for new encoding argument. If encoding is NULL, find encoding suited for type, otherwise use user encoding. * language.h (language_defn): Add encoding argument. (LA_PRINT_STRING): Likewise. * language.c (unk_lang_printstr): Update to reflect new encoding argument to language_defn. * ada-lang.h (ada_printstr): Likewise. * c-lang.h (c_printstr): Likewise. * p-lang.h (pascal_printstr); * f-lang.c (f_printstr): Likewise. * m2-lang.c (m2_printstr): Likewise. * objc-lang.c (objc_printstr): Likewise. * p-lang.c (pascal_printstr): Likewise. * scm-lang.c (scm_printstr): Likewise. * c-valprint.c (c_val_print): Update LA_PRINT_STRING call for encoding argument. * ada-valprint.c (ada_printstr): Likewise. * f-valprint.c (f_val_print): Likewise * m2-valprint.c (m2_val_print): Likewise. * p-valprint.c (pascal_val_print): Likewise. * expprint.c (print_subexp_standard): Likewise. * valprint.c (val_print_string): Likewise. * Makefile.in (SUBDIR_PYTHON_OBS): Add py-lazy-string. (SUBDIR_PYTHON_SRCS): Likewise. (py-lazy-string.o): New rule. 2010-01-13 Phil Muldoon <pmuldoon@redhat.com> * gdb.texinfo (Values From Inferior): Document lazy_string value method. (Python API): Add Lazy strings menu item. (Lazy Strings In Python): New node. 2010-01-13 Phil Muldoon <pmuldoon@redhat.com> * gdb.python/py-value.exp (test_lazy_strings): Add lazy string test. * gdb.python/py-prettyprint.py (pp_ls): New printer. * gdb.python/py-prettyprint.exp (run_lang_tests): Add lazy string test. * gdb.python/py-prettyprint.c: Define lazystring test structure. * gdb.python/py-mi.exp: Add lazy string test.
659 lines
19 KiB
C
659 lines
19 KiB
C
/* Support for printing Modula 2 values for GDB, the GNU debugger.
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Copyright (C) 1986, 1988, 1989, 1991, 1992, 1996, 1998, 2000, 2005, 2006,
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2007, 2008, 2009, 2010 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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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 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_print_options *options,
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int len);
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/* Print function pointer with inferior address ADDRESS onto stdio
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stream STREAM. */
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static void
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print_function_pointer_address (struct gdbarch *gdbarch, CORE_ADDR address,
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struct ui_file *stream, int addressprint)
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{
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CORE_ADDR func_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
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¤t_target);
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/* If the function pointer is represented by a description, print the
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address of the description. */
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if (addressprint && func_addr != address)
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{
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fputs_filtered ("@", stream);
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fputs_filtered (paddress (gdbarch, address), stream);
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fputs_filtered (": ", stream);
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}
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print_address_demangle (gdbarch, func_addr, stream, demangle);
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}
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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) == TYPE_CODE_STRUCT)
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{
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len = TYPE_NFIELDS (type);
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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_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
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*high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
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len-1)));
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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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CHECK_TYPEDEF (type);
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fprintf_filtered (stream, "{");
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len = TYPE_NFIELDS (type);
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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_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
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}
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else
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{
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fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
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return;
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}
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target = TYPE_TARGET_TYPE (range);
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if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
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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_TYPE (type, field),
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(TYPE_FIELD_BITPOS (type, field) / 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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fprintf_filtered (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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fprintf_filtered (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_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
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if (get_discrete_bounds (range, &field_low, &field_high) < 0)
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break;
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target = TYPE_TARGET_TYPE (range);
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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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fprintf_filtered (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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fprintf_filtered (stream, "}");
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}
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}
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static void
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m2_print_unbounded_array (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_print_options *options)
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{
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struct type *content_type;
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CORE_ADDR addr;
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LONGEST len;
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struct value *val;
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CHECK_TYPEDEF (type);
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content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
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addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
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(TYPE_FIELD_BITPOS (type, 0) / 8) +
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valaddr + embedded_offset);
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val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
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addr);
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len = unpack_field_as_long (type, valaddr + embedded_offset, 1);
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fprintf_filtered (stream, "{");
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m2_print_array_contents (value_type (val), value_contents(val),
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value_embedded_offset (val), addr, stream,
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recurse, options, len);
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fprintf_filtered (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 = get_type_arch (type);
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struct type *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_function_pointer_address (gdbarch, addr, stream,
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options->addressprint);
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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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fputs_filtered (paddress (gdbarch, address), stream);
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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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&& (options->format == 0 || options->format == 's')
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&& addr != 0)
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return val_print_string (TYPE_TARGET_TYPE (type), addr, -1,
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stream, options);
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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 = get_type_arch (type);
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CORE_ADDR addr = unpack_pointer (type, valaddr);
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struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
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fprintf_filtered (stream, "[");
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fputs_filtered (paddress (gdbarch, addr), stream);
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fprintf_filtered (stream, "] : ");
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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 (TYPE_TARGET_TYPE (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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fputs_filtered ("???", 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 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_print_options *options,
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int len)
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{
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int eltlen;
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CHECK_TYPEDEF (type);
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if (TYPE_LENGTH (type) > 0)
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{
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eltlen = TYPE_LENGTH (type);
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if (options->prettyprint_arrays)
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print_spaces_filtered (2 + 2 * recurse, stream);
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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 (type) == TYPE_CODE_INT)
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|| ((current_language->la_language == language_m2)
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&& (TYPE_CODE (type) == TYPE_CODE_CHAR)))
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&& (options->format == 0 || options->format == 's'))
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val_print_string (type, address, len+1, stream, options);
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else
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{
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fprintf_filtered (stream, "{");
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val_print_array_elements (type, valaddr + embedded_offset,
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address, stream, recurse, options, 0);
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fprintf_filtered (stream, "}");
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}
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}
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}
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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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OPTIONS. The data at VALADDR is in 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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int
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m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
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CORE_ADDR address, struct ui_file *stream, int recurse,
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const struct value_print_options *options)
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{
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struct gdbarch *gdbarch = get_type_arch (type);
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unsigned int i = 0; /* Number of characters printed */
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unsigned len;
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struct type *elttype;
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unsigned eltlen;
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int length_pos, length_size, string_pos;
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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 (options->prettyprint_arrays)
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print_spaces_filtered (2 + 2 * recurse, stream);
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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_m2)
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&& (TYPE_CODE (elttype) == 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 + embedded_offset)[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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LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
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valaddr + embedded_offset, len, NULL,
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0, options);
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i = len;
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}
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else
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{
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fprintf_filtered (stream, "{");
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val_print_array_elements (type, valaddr + embedded_offset,
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address, stream, recurse, options, 0);
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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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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 + embedded_offset,
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stream, recurse, options);
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else if (options->format && options->format != 's')
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print_scalar_formatted (valaddr + embedded_offset, type,
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options, 0, stream);
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else
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{
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addr = unpack_pointer (type, valaddr + embedded_offset);
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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_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, 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 (m2_is_long_set (type))
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m2_print_long_set (type, valaddr, embedded_offset, address,
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stream);
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else if (m2_is_unbounded_array (type))
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m2_print_unbounded_array (type, valaddr, embedded_offset,
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address, stream, recurse, options);
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else
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cp_print_value_fields (type, type, valaddr, embedded_offset,
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address, stream, recurse, options, NULL, 0);
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break;
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case TYPE_CODE_ENUM:
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if (options->format)
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{
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print_scalar_formatted (valaddr + embedded_offset, type,
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options, 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_FUNC:
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if (options->format)
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{
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
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);
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
&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
|
|
fprintf_filtered (stream, "%ld)", (long int) val);
|
|
}
|
|
break;
|
|
|
|
case TYPE_CODE_RANGE:
|
|
if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
|
|
{
|
|
m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
|
|
address, stream, recurse, options);
|
|
break;
|
|
}
|
|
/* 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);
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
&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);
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
&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)
|
|
print_scalar_formatted (valaddr + embedded_offset, type,
|
|
options, 0, stream);
|
|
else
|
|
print_floating (valaddr + embedded_offset, type, stream);
|
|
break;
|
|
|
|
case TYPE_CODE_METHOD:
|
|
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);
|
|
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, _("<error 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 m2 type code %d in symbol table."), TYPE_CODE (type));
|
|
}
|
|
gdb_flush (stream);
|
|
return (0);
|
|
}
|