b276f1bbc9
* p-valprint.c (pascal_val_print): Replace extract_address with the inline equivalent extract_unsigned_integer. * jv-valprint.c (java_value_print): Ditto. * ada-valprint.c (ada_val_print_1): Ditto. * ada-lang.h (EXTRACT_ADDRESS): Ditto.
537 lines
14 KiB
C
537 lines
14 KiB
C
/* Support for printing Java values for GDB, the GNU debugger.
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Copyright 1997, 1998, 1999, 2000 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 "gdbcore.h"
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#include "expression.h"
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#include "value.h"
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#include "demangle.h"
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#include "valprint.h"
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#include "language.h"
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#include "jv-lang.h"
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#include "c-lang.h"
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#include "annotate.h"
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#include "gdb_string.h"
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/* Local functions */
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static void java_print_value_fields (struct type * type, char *valaddr,
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CORE_ADDR address,
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struct ui_file *stream, int format,
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int recurse,
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enum val_prettyprint pretty);
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int
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java_value_print (struct value *val, struct ui_file *stream, int format,
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enum val_prettyprint pretty)
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{
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struct type *type;
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CORE_ADDR address;
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int i;
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char *name;
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type = VALUE_TYPE (val);
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address = VALUE_ADDRESS (val) + VALUE_OFFSET (val);
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if (is_object_type (type))
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{
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CORE_ADDR obj_addr;
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/* Get the run-time type, and cast the object into that */
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obj_addr = unpack_pointer (type, VALUE_CONTENTS (val));
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if (obj_addr != 0)
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{
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type = type_from_class (java_class_from_object (val));
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type = lookup_pointer_type (type);
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val = value_at (type, address, NULL);
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}
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}
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if (TYPE_CODE (type) == TYPE_CODE_PTR && !value_logical_not (val))
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type_print (TYPE_TARGET_TYPE (type), "", stream, -1);
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name = TYPE_TAG_NAME (type);
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if (TYPE_CODE (type) == TYPE_CODE_STRUCT && name != NULL
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&& (i = strlen (name), name[i - 1] == ']'))
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{
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char buf4[4];
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long length;
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unsigned int things_printed = 0;
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int reps;
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struct type *el_type = java_primitive_type_from_name (name, i - 2);
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i = 0;
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read_memory (address + JAVA_OBJECT_SIZE, buf4, 4);
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length = (long) extract_signed_integer (buf4, 4);
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fprintf_filtered (stream, "{length: %ld", length);
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if (el_type == NULL)
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{
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CORE_ADDR element;
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CORE_ADDR next_element = -1; /* dummy initial value */
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address += JAVA_OBJECT_SIZE + 4; /* Skip object header and length. */
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while (i < length && things_printed < print_max)
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{
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char *buf;
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buf = alloca (TARGET_PTR_BIT / HOST_CHAR_BIT);
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fputs_filtered (", ", stream);
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wrap_here (n_spaces (2));
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if (i > 0)
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element = next_element;
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else
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{
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read_memory (address, buf, sizeof (buf));
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address += TARGET_PTR_BIT / HOST_CHAR_BIT;
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/* FIXME: cagney/2003-05-24: Bogus or what. It
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pulls a host sized pointer out of the target and
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then extracts that as an address (while assuming
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that the address is unsigned)! */
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element = extract_unsigned_integer (buf, sizeof (buf));
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}
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for (reps = 1; i + reps < length; reps++)
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{
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read_memory (address, buf, sizeof (buf));
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address += TARGET_PTR_BIT / HOST_CHAR_BIT;
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/* FIXME: cagney/2003-05-24: Bogus or what. It
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pulls a host sized pointer out of the target and
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then extracts that as an address (while assuming
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that the address is unsigned)! */
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next_element = extract_unsigned_integer (buf, sizeof (buf));
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if (next_element != element)
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break;
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}
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if (reps == 1)
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fprintf_filtered (stream, "%d: ", i);
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else
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fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
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if (element == 0)
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fprintf_filtered (stream, "null");
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else
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fprintf_filtered (stream, "@%s", paddr_nz (element));
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things_printed++;
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i += reps;
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}
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}
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else
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{
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struct value *v = allocate_value (el_type);
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struct value *next_v = allocate_value (el_type);
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VALUE_ADDRESS (v) = address + JAVA_OBJECT_SIZE + 4;
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VALUE_ADDRESS (next_v) = VALUE_ADDRESS (v);
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while (i < length && things_printed < print_max)
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{
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fputs_filtered (", ", stream);
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wrap_here (n_spaces (2));
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if (i > 0)
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{
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struct value *tmp;
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tmp = next_v;
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next_v = v;
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v = tmp;
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}
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else
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{
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VALUE_LAZY (v) = 1;
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VALUE_OFFSET (v) = 0;
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}
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VALUE_OFFSET (next_v) = VALUE_OFFSET (v);
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for (reps = 1; i + reps < length; reps++)
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{
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VALUE_LAZY (next_v) = 1;
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VALUE_OFFSET (next_v) += TYPE_LENGTH (el_type);
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if (memcmp (VALUE_CONTENTS (v), VALUE_CONTENTS (next_v),
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TYPE_LENGTH (el_type)) != 0)
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break;
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}
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if (reps == 1)
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fprintf_filtered (stream, "%d: ", i);
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else
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fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
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val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0,
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stream, format, 2, 1, pretty);
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things_printed++;
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i += reps;
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}
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}
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if (i < length)
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fprintf_filtered (stream, "...");
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fprintf_filtered (stream, "}");
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return 0;
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}
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/* If it's type String, print it */
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if (TYPE_CODE (type) == TYPE_CODE_PTR
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&& TYPE_TARGET_TYPE (type)
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&& TYPE_TAG_NAME (TYPE_TARGET_TYPE (type))
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&& strcmp (TYPE_TAG_NAME (TYPE_TARGET_TYPE (type)),
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"java.lang.String") == 0
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&& (format == 0 || format == 's')
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&& address != 0
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&& value_as_address (val) != 0)
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{
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struct value *data_val;
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CORE_ADDR data;
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struct value *boffset_val;
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unsigned long boffset;
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struct value *count_val;
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unsigned long count;
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struct value *mark;
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mark = value_mark (); /* Remember start of new values */
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data_val = value_struct_elt (&val, NULL, "data", NULL, NULL);
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data = value_as_address (data_val);
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boffset_val = value_struct_elt (&val, NULL, "boffset", NULL, NULL);
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boffset = value_as_address (boffset_val);
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count_val = value_struct_elt (&val, NULL, "count", NULL, NULL);
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count = value_as_address (count_val);
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value_free_to_mark (mark); /* Release unnecessary values */
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val_print_string (data + boffset, count, 2, stream);
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return 0;
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}
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return (val_print (type, VALUE_CONTENTS (val), 0, address,
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stream, format, 1, 0, pretty));
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}
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/* TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
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same meanings as in cp_print_value and c_val_print.
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DONT_PRINT is an array of baseclass types that we
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should not print, or zero if called from top level. */
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static void
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java_print_value_fields (struct type *type, char *valaddr, CORE_ADDR address,
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struct ui_file *stream, int format, int recurse,
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enum val_prettyprint pretty)
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{
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int i, len, n_baseclasses;
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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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n_baseclasses = TYPE_N_BASECLASSES (type);
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if (n_baseclasses > 0)
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{
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int i, n_baseclasses = TYPE_N_BASECLASSES (type);
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for (i = 0; i < n_baseclasses; i++)
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{
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int boffset;
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struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
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char *basename = TYPE_NAME (baseclass);
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char *base_valaddr;
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if (BASETYPE_VIA_VIRTUAL (type, i))
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continue;
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if (basename != NULL && strcmp (basename, "java.lang.Object") == 0)
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continue;
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boffset = 0;
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 * (recurse + 1), stream);
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}
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fputs_filtered ("<", stream);
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/* Not sure what the best notation is in the case where there is no
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baseclass name. */
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fputs_filtered (basename ? basename : "", stream);
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fputs_filtered ("> = ", stream);
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base_valaddr = valaddr;
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java_print_value_fields (baseclass, base_valaddr, address + boffset,
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stream, format, recurse + 1, pretty);
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fputs_filtered (", ", stream);
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flush_it:
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;
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}
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}
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if (!len && n_baseclasses == 1)
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fprintf_filtered (stream, "<No data fields>");
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else
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{
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int fields_seen = 0;
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for (i = n_baseclasses; i < len; i++)
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{
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/* If requested, skip printing of static fields. */
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if (TYPE_FIELD_STATIC (type, i))
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{
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char *name = TYPE_FIELD_NAME (type, i);
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if (!static_field_print)
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continue;
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if (name != NULL && strcmp (name, "class") == 0)
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continue;
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}
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if (fields_seen)
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fprintf_filtered (stream, ", ");
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else if (n_baseclasses > 0)
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{
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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fputs_filtered ("members of ", stream);
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fputs_filtered (type_name_no_tag (type), stream);
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fputs_filtered (": ", stream);
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}
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}
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fields_seen = 1;
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 + 2 * recurse, stream);
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}
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else
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{
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wrap_here (n_spaces (2 + 2 * recurse));
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}
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if (inspect_it)
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{
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if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
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fputs_filtered ("\"( ptr \"", stream);
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else
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fputs_filtered ("\"( nodef \"", stream);
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if (TYPE_FIELD_STATIC (type, i))
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fputs_filtered ("static ", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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language_cplus,
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DMGL_PARAMS | DMGL_ANSI);
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fputs_filtered ("\" \"", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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language_cplus,
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DMGL_PARAMS | DMGL_ANSI);
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fputs_filtered ("\") \"", stream);
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}
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else
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{
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annotate_field_begin (TYPE_FIELD_TYPE (type, i));
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if (TYPE_FIELD_STATIC (type, i))
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fputs_filtered ("static ", stream);
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fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
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language_cplus,
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DMGL_PARAMS | DMGL_ANSI);
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annotate_field_name_end ();
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fputs_filtered (": ", stream);
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annotate_field_value ();
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}
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if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
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{
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struct value *v;
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/* Bitfields require special handling, especially due to byte
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order problems. */
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if (TYPE_FIELD_IGNORE (type, i))
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{
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fputs_filtered ("<optimized out or zero length>", stream);
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}
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else
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{
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v = value_from_longest (TYPE_FIELD_TYPE (type, i),
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unpack_field_as_long (type, valaddr, i));
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val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
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0, stream, format, 0, recurse + 1, pretty);
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}
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}
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else
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{
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if (TYPE_FIELD_IGNORE (type, i))
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{
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fputs_filtered ("<optimized out or zero length>", stream);
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}
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else if (TYPE_FIELD_STATIC (type, i))
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{
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struct value *v = value_static_field (type, i);
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if (v == NULL)
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fputs_filtered ("<optimized out>", stream);
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else
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{
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struct type *t = check_typedef (VALUE_TYPE (v));
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if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
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v = value_addr (v);
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val_print (VALUE_TYPE (v),
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VALUE_CONTENTS (v), 0, VALUE_ADDRESS (v),
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stream, format, 0, recurse + 1, pretty);
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}
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}
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else if (TYPE_FIELD_TYPE (type, i) == NULL)
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fputs_filtered ("<unknown type>", stream);
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else
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{
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val_print (TYPE_FIELD_TYPE (type, i),
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valaddr + TYPE_FIELD_BITPOS (type, i) / 8, 0,
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address + TYPE_FIELD_BITPOS (type, i) / 8,
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stream, format, 0, recurse + 1, pretty);
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}
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}
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annotate_field_end ();
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}
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if (pretty)
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{
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fprintf_filtered (stream, "\n");
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print_spaces_filtered (2 * recurse, stream);
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}
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}
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fprintf_filtered (stream, "}");
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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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FORMAT (a letter or 0 for natural format). The data at VALADDR is in
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target byte order.
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If the data are a string pointer, returns the number of string characters
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printed.
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If DEREF_REF is nonzero, then dereference references, otherwise just print
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them like pointers.
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The PRETTY parameter controls prettyprinting. */
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int
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java_val_print (struct type *type, char *valaddr, int embedded_offset,
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CORE_ADDR address, struct ui_file *stream, int format,
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int deref_ref, int recurse, enum val_prettyprint pretty)
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{
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register unsigned int i = 0; /* Number of characters printed */
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struct type *target_type;
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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_PTR:
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if (format && format != 's')
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{
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print_scalar_formatted (valaddr, type, format, 0, stream);
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break;
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}
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#if 0
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if (vtblprint && cp_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 an address, assume that it is unsigned. */
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print_address_demangle (extract_unsigned_integer (valaddr, TYPE_LENGTH (type)),
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stream, demangle);
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break;
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}
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#endif
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addr = unpack_pointer (type, valaddr);
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if (addr == 0)
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{
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fputs_filtered ("null", stream);
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return i;
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}
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target_type = check_typedef (TYPE_TARGET_TYPE (type));
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if (TYPE_CODE (target_type) == TYPE_CODE_FUNC)
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{
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/* Try to print what function it points to. */
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print_address_demangle (addr, stream, demangle);
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/* Return value is irrelevant except for string pointers. */
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return (0);
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}
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if (addressprint && format != 's')
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{
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fputs_filtered ("@", stream);
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print_longest (stream, 'x', 0, (ULONGEST) addr);
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}
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return i;
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case TYPE_CODE_CHAR:
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case TYPE_CODE_INT:
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/* Can't just call c_val_print because that prints bytes as C
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chars. */
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format = format ? format : output_format;
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if (format)
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print_scalar_formatted (valaddr, type, format, 0, stream);
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else if (TYPE_CODE (type) == TYPE_CODE_CHAR
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|| (TYPE_CODE (type) == TYPE_CODE_INT
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&& TYPE_LENGTH (type) == 2
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&& strcmp (TYPE_NAME (type), "char") == 0))
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LA_PRINT_CHAR ((int) unpack_long (type, valaddr), stream);
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else
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val_print_type_code_int (type, valaddr, stream);
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break;
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case TYPE_CODE_STRUCT:
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java_print_value_fields (type, valaddr, address, stream, format,
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recurse, pretty);
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break;
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default:
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return c_val_print (type, valaddr, embedded_offset, address, stream,
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format, deref_ref, recurse, pretty);
|
|
}
|
|
|
|
return 0;
|
|
}
|