/* Support for printing Java values for GDB, the GNU debugger.
- Copyright 1997 Free Software Foundation, Inc.
+ Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
+#include "gdbcore.h"
#include "expression.h"
#include "value.h"
#include "demangle.h"
#include "language.h"
#include "jv-lang.h"
#include "c-lang.h"
+#include "annotate.h"
+#include "gdb_string.h"
+
+/* Local functions */
+
+static void java_print_value_fields (struct type * type, char *valaddr,
+ CORE_ADDR address,
+ struct ui_file *stream, int format,
+ int recurse,
+ enum val_prettyprint pretty);
+
int
-java_value_print (val, stream, format, pretty)
- value_ptr val;
- GDB_FILE *stream;
- int format;
- enum val_prettyprint pretty;
+java_value_print (struct value *val, struct ui_file *stream, int format,
+ enum val_prettyprint pretty)
{
- struct type *type = VALUE_TYPE (val);
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ struct type *type;
+ CORE_ADDR address;
+ int i;
+ char *name;
+
+ type = VALUE_TYPE (val);
+ address = VALUE_ADDRESS (val) + VALUE_OFFSET (val);
+
+ if (is_object_type (type))
+ {
+ CORE_ADDR obj_addr;
+
+ /* Get the run-time type, and cast the object into that */
+
+ obj_addr = unpack_pointer (type, VALUE_CONTENTS (val));
+
+ if (obj_addr != 0)
+ {
+ type = type_from_class (java_class_from_object (val));
+ type = lookup_pointer_type (type);
+
+ val = value_at (type, address, NULL);
+ }
+ }
+
+ if (TYPE_CODE (type) == TYPE_CODE_PTR && !value_logical_not (val))
+ type_print (TYPE_TARGET_TYPE (type), "", stream, -1);
+
+ name = TYPE_TAG_NAME (type);
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT && name != NULL
+ && (i = strlen (name), name[i - 1] == ']'))
+ {
+ char buf4[4];
+ long length;
+ unsigned int things_printed = 0;
+ int reps;
+ struct type *el_type = java_primitive_type_from_name (name, i - 2);
+
+ i = 0;
+ read_memory (address + JAVA_OBJECT_SIZE, buf4, 4);
+
+ length = (long) extract_signed_integer (buf4, 4);
+ fprintf_filtered (stream, "{length: %ld", length);
+
+ if (el_type == NULL)
+ {
+ CORE_ADDR element;
+ CORE_ADDR next_element = -1; /* dummy initial value */
+
+ address += JAVA_OBJECT_SIZE + 4; /* Skip object header and length. */
+
+ while (i < length && things_printed < print_max)
+ {
+ char *buf;
+
+ buf = alloca (TARGET_PTR_BIT / HOST_CHAR_BIT);
+ fputs_filtered (", ", stream);
+ wrap_here (n_spaces (2));
+
+ if (i > 0)
+ element = next_element;
+ else
+ {
+ read_memory (address, buf, sizeof (buf));
+ address += TARGET_PTR_BIT / HOST_CHAR_BIT;
+ /* FIXME: cagney/2003-05-24: Bogus or what. It
+ pulls a host sized pointer out of the target and
+ then extracts that as an address (while assuming
+ that the address is unsigned)! */
+ element = extract_unsigned_integer (buf, sizeof (buf));
+ }
+
+ for (reps = 1; i + reps < length; reps++)
+ {
+ read_memory (address, buf, sizeof (buf));
+ address += TARGET_PTR_BIT / HOST_CHAR_BIT;
+ /* FIXME: cagney/2003-05-24: Bogus or what. It
+ pulls a host sized pointer out of the target and
+ then extracts that as an address (while assuming
+ that the address is unsigned)! */
+ next_element = extract_unsigned_integer (buf, sizeof (buf));
+ if (next_element != element)
+ break;
+ }
+
+ if (reps == 1)
+ fprintf_filtered (stream, "%d: ", i);
+ else
+ fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
+
+ if (element == 0)
+ fprintf_filtered (stream, "null");
+ else
+ fprintf_filtered (stream, "@%s", paddr_nz (element));
+
+ things_printed++;
+ i += reps;
+ }
+ }
+ else
+ {
+ struct value *v = allocate_value (el_type);
+ struct value *next_v = allocate_value (el_type);
+
+ VALUE_ADDRESS (v) = address + JAVA_OBJECT_SIZE + 4;
+ VALUE_ADDRESS (next_v) = VALUE_ADDRESS (v);
+
+ while (i < length && things_printed < print_max)
+ {
+ fputs_filtered (", ", stream);
+ wrap_here (n_spaces (2));
+
+ if (i > 0)
+ {
+ struct value *tmp;
+
+ tmp = next_v;
+ next_v = v;
+ v = tmp;
+ }
+ else
+ {
+ VALUE_LAZY (v) = 1;
+ VALUE_OFFSET (v) = 0;
+ }
+
+ VALUE_OFFSET (next_v) = VALUE_OFFSET (v);
+
+ for (reps = 1; i + reps < length; reps++)
+ {
+ VALUE_LAZY (next_v) = 1;
+ VALUE_OFFSET (next_v) += TYPE_LENGTH (el_type);
+ if (memcmp (VALUE_CONTENTS (v), VALUE_CONTENTS (next_v),
+ TYPE_LENGTH (el_type)) != 0)
+ break;
+ }
+
+ if (reps == 1)
+ fprintf_filtered (stream, "%d: ", i);
+ else
+ fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1);
+
+ val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0,
+ stream, format, 2, 1, pretty);
+
+ things_printed++;
+ i += reps;
+ }
+ }
+
+ if (i < length)
+ fprintf_filtered (stream, "...");
+
+ fprintf_filtered (stream, "}");
+
+ return 0;
+ }
+
+ /* If it's type String, print it */
+
+ if (TYPE_CODE (type) == TYPE_CODE_PTR
+ && TYPE_TARGET_TYPE (type)
+ && TYPE_TAG_NAME (TYPE_TARGET_TYPE (type))
+ && strcmp (TYPE_TAG_NAME (TYPE_TARGET_TYPE (type)),
+ "java.lang.String") == 0
+ && (format == 0 || format == 's')
+ && address != 0
+ && value_as_address (val) != 0)
{
- fprintf_filtered (stream, "(");
- type_print (TYPE_TARGET_TYPE (type), "", stream, -1);
- fprintf_filtered (stream, ") ");
+ struct value *data_val;
+ CORE_ADDR data;
+ struct value *boffset_val;
+ unsigned long boffset;
+ struct value *count_val;
+ unsigned long count;
+ struct value *mark;
+
+ mark = value_mark (); /* Remember start of new values */
+
+ data_val = value_struct_elt (&val, NULL, "data", NULL, NULL);
+ data = value_as_address (data_val);
+
+ boffset_val = value_struct_elt (&val, NULL, "boffset", NULL, NULL);
+ boffset = value_as_address (boffset_val);
+
+ count_val = value_struct_elt (&val, NULL, "count", NULL, NULL);
+ count = value_as_address (count_val);
+
+ value_free_to_mark (mark); /* Release unnecessary values */
+
+ val_print_string (data + boffset, count, 2, stream);
+
+ return 0;
}
- return (val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
- VALUE_ADDRESS (val) + VALUE_OFFSET (val),
+
+ return (val_print (type, VALUE_CONTENTS (val), 0, address,
stream, format, 1, 0, pretty));
}
+/* TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the
+ same meanings as in cp_print_value and c_val_print.
+
+ DONT_PRINT is an array of baseclass types that we
+ should not print, or zero if called from top level. */
+
+static void
+java_print_value_fields (struct type *type, char *valaddr, CORE_ADDR address,
+ struct ui_file *stream, int format, int recurse,
+ enum val_prettyprint pretty)
+{
+ int i, len, n_baseclasses;
+
+ CHECK_TYPEDEF (type);
+
+ fprintf_filtered (stream, "{");
+ len = TYPE_NFIELDS (type);
+ n_baseclasses = TYPE_N_BASECLASSES (type);
+
+ if (n_baseclasses > 0)
+ {
+ int i, n_baseclasses = TYPE_N_BASECLASSES (type);
+
+ for (i = 0; i < n_baseclasses; i++)
+ {
+ int boffset;
+ struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
+ char *basename = TYPE_NAME (baseclass);
+ char *base_valaddr;
+
+ if (BASETYPE_VIA_VIRTUAL (type, i))
+ continue;
+
+ if (basename != NULL && strcmp (basename, "java.lang.Object") == 0)
+ continue;
+
+ boffset = 0;
+
+ if (pretty)
+ {
+ fprintf_filtered (stream, "\n");
+ print_spaces_filtered (2 * (recurse + 1), stream);
+ }
+ fputs_filtered ("<", stream);
+ /* Not sure what the best notation is in the case where there is no
+ baseclass name. */
+ fputs_filtered (basename ? basename : "", stream);
+ fputs_filtered ("> = ", stream);
+
+ base_valaddr = valaddr;
+
+ java_print_value_fields (baseclass, base_valaddr, address + boffset,
+ stream, format, recurse + 1, pretty);
+ fputs_filtered (", ", stream);
+
+ flush_it:
+ ;
+ }
+
+ }
+
+ if (!len && n_baseclasses == 1)
+ fprintf_filtered (stream, "<No data fields>");
+ else
+ {
+ int fields_seen = 0;
+
+ for (i = n_baseclasses; i < len; i++)
+ {
+ /* If requested, skip printing of static fields. */
+ if (TYPE_FIELD_STATIC (type, i))
+ {
+ char *name = TYPE_FIELD_NAME (type, i);
+ if (!static_field_print)
+ continue;
+ if (name != NULL && strcmp (name, "class") == 0)
+ continue;
+ }
+ if (fields_seen)
+ fprintf_filtered (stream, ", ");
+ else if (n_baseclasses > 0)
+ {
+ if (pretty)
+ {
+ fprintf_filtered (stream, "\n");
+ print_spaces_filtered (2 + 2 * recurse, stream);
+ fputs_filtered ("members of ", stream);
+ fputs_filtered (type_name_no_tag (type), stream);
+ fputs_filtered (": ", stream);
+ }
+ }
+ fields_seen = 1;
+
+ if (pretty)
+ {
+ fprintf_filtered (stream, "\n");
+ print_spaces_filtered (2 + 2 * recurse, stream);
+ }
+ else
+ {
+ wrap_here (n_spaces (2 + 2 * recurse));
+ }
+ if (inspect_it)
+ {
+ if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
+ fputs_filtered ("\"( ptr \"", stream);
+ else
+ fputs_filtered ("\"( nodef \"", stream);
+ if (TYPE_FIELD_STATIC (type, i))
+ fputs_filtered ("static ", stream);
+ fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+ language_cplus,
+ DMGL_PARAMS | DMGL_ANSI);
+ fputs_filtered ("\" \"", stream);
+ fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+ language_cplus,
+ DMGL_PARAMS | DMGL_ANSI);
+ fputs_filtered ("\") \"", stream);
+ }
+ else
+ {
+ annotate_field_begin (TYPE_FIELD_TYPE (type, i));
+
+ if (TYPE_FIELD_STATIC (type, i))
+ fputs_filtered ("static ", stream);
+ fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
+ language_cplus,
+ DMGL_PARAMS | DMGL_ANSI);
+ annotate_field_name_end ();
+ fputs_filtered (": ", stream);
+ annotate_field_value ();
+ }
+
+ if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i))
+ {
+ struct value *v;
+
+ /* Bitfields require special handling, especially due to byte
+ order problems. */
+ if (TYPE_FIELD_IGNORE (type, i))
+ {
+ fputs_filtered ("<optimized out or zero length>", stream);
+ }
+ else
+ {
+ v = value_from_longest (TYPE_FIELD_TYPE (type, i),
+ unpack_field_as_long (type, valaddr, i));
+
+ val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
+ 0, stream, format, 0, recurse + 1, pretty);
+ }
+ }
+ else
+ {
+ if (TYPE_FIELD_IGNORE (type, i))
+ {
+ fputs_filtered ("<optimized out or zero length>", stream);
+ }
+ else if (TYPE_FIELD_STATIC (type, i))
+ {
+ struct value *v = value_static_field (type, i);
+ if (v == NULL)
+ fputs_filtered ("<optimized out>", stream);
+ else
+ {
+ struct type *t = check_typedef (VALUE_TYPE (v));
+ if (TYPE_CODE (t) == TYPE_CODE_STRUCT)
+ v = value_addr (v);
+ val_print (VALUE_TYPE (v),
+ VALUE_CONTENTS (v), 0, VALUE_ADDRESS (v),
+ stream, format, 0, recurse + 1, pretty);
+ }
+ }
+ else if (TYPE_FIELD_TYPE (type, i) == NULL)
+ fputs_filtered ("<unknown type>", stream);
+ else
+ {
+ val_print (TYPE_FIELD_TYPE (type, i),
+ valaddr + TYPE_FIELD_BITPOS (type, i) / 8, 0,
+ address + TYPE_FIELD_BITPOS (type, i) / 8,
+ stream, format, 0, recurse + 1, pretty);
+ }
+ }
+ annotate_field_end ();
+ }
+
+ if (pretty)
+ {
+ fprintf_filtered (stream, "\n");
+ print_spaces_filtered (2 * recurse, stream);
+ }
+ }
+ fprintf_filtered (stream, "}");
+}
+
+/* Print data of type TYPE located at VALADDR (within GDB), which came from
+ the inferior at address ADDRESS, onto stdio stream STREAM according to
+ FORMAT (a letter or 0 for natural format). The data at VALADDR is in
+ target byte order.
+
+ If the data are a string pointer, returns the number of string characters
+ printed.
+
+ If DEREF_REF is nonzero, then dereference references, otherwise just print
+ them like pointers.
+
+ The PRETTY parameter controls prettyprinting. */
+
int
-java_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
- pretty)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- GDB_FILE *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
+java_val_print (struct type *type, char *valaddr, int embedded_offset,
+ CORE_ADDR address, struct ui_file *stream, int format,
+ int deref_ref, int recurse, enum val_prettyprint pretty)
{
- if (is_object_type (type))
+ register unsigned int i = 0; /* Number of characters printed */
+ struct type *target_type;
+ CORE_ADDR addr;
+
+ CHECK_TYPEDEF (type);
+ switch (TYPE_CODE (type))
{
- CORE_ADDR obj_addr = unpack_pointer (type, valaddr);
- if (obj_addr != 0)
+ case TYPE_CODE_PTR:
+ if (format && format != 's')
{
- value_ptr obj_val
- = value_at (TYPE_TARGET_TYPE (type), obj_addr, NULL);
- type = type_from_class (java_class_from_object (obj_val));
- type = lookup_pointer_type (type);
+ print_scalar_formatted (valaddr, type, format, 0, stream);
+ break;
+ }
+#if 0
+ if (vtblprint && cp_is_vtbl_ptr_type (type))
+ {
+ /* Print the unmangled name if desired. */
+ /* Print vtable entry - we only get here if we ARE using
+ -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */
+ /* Extract an address, assume that it is unsigned. */
+ print_address_demangle (extract_unsigned_integer (valaddr, TYPE_LENGTH (type)),
+ stream, demangle);
+ break;
+ }
+#endif
+ addr = unpack_pointer (type, valaddr);
+ if (addr == 0)
+ {
+ fputs_filtered ("null", stream);
+ return i;
+ }
+ target_type = check_typedef (TYPE_TARGET_TYPE (type));
+
+ if (TYPE_CODE (target_type) == TYPE_CODE_FUNC)
+ {
+ /* Try to print what function it points to. */
+ print_address_demangle (addr, stream, demangle);
+ /* Return value is irrelevant except for string pointers. */
+ return (0);
+ }
+
+ if (addressprint && format != 's')
+ {
+ fputs_filtered ("@", stream);
+ print_longest (stream, 'x', 0, (ULONGEST) addr);
}
+
+ return i;
+
+ case TYPE_CODE_CHAR:
+ case TYPE_CODE_INT:
+ /* Can't just call c_val_print because that prints bytes as C
+ chars. */
+ format = format ? format : output_format;
+ if (format)
+ print_scalar_formatted (valaddr, type, format, 0, stream);
+ else if (TYPE_CODE (type) == TYPE_CODE_CHAR
+ || (TYPE_CODE (type) == TYPE_CODE_INT
+ && TYPE_LENGTH (type) == 2
+ && strcmp (TYPE_NAME (type), "char") == 0))
+ LA_PRINT_CHAR ((int) unpack_long (type, valaddr), stream);
+ else
+ val_print_type_code_int (type, valaddr, stream);
+ break;
+
+ case TYPE_CODE_STRUCT:
+ java_print_value_fields (type, valaddr, address, stream, format,
+ recurse, pretty);
+ break;
+
+ default:
+ return c_val_print (type, valaddr, embedded_offset, address, stream,
+ format, deref_ref, recurse, pretty);
}
- return c_val_print (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty);
+
+ return 0;
}
projects / deliverable / binutils-gdb.git / blobdiff