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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [jv-valprint.c] - Rev 450
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/* Support for printing Java values for GDB, the GNU debugger. Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc. 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 3 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. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "symtab.h" #include "gdbtypes.h" #include "gdbcore.h" #include "expression.h" #include "value.h" #include "demangle.h" #include "valprint.h" #include "language.h" #include "jv-lang.h" #include "c-lang.h" #include "annotate.h" #include "gdb_string.h" /* Local functions */ int java_value_print (struct value *val, struct ui_file *stream, int format, enum val_prettyprint pretty) { 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); } } 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] == ']')) { gdb_byte 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) { gdb_byte *buf; buf = alloca (gdbarch_ptr_bit (current_gdbarch) / 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 += gdbarch_ptr_bit (current_gdbarch) / 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 += gdbarch_ptr_bit (current_gdbarch) / 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 { set_value_lazy (v, 1); set_value_offset (v, 0); } set_value_offset (next_v, value_offset (v)); for (reps = 1; i + reps < length; reps++) { set_value_lazy (next_v, 1); set_value_offset (next_v, 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); common_val_print (v, 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) { 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 common_val_print (val, 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, const gdb_byte *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); const gdb_byte *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); } } 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)); common_val_print (v, 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); common_val_print (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 (struct type *type, const gdb_byte *valaddr, int embedded_offset, CORE_ADDR address, struct ui_file *stream, int format, int deref_ref, int recurse, enum val_prettyprint pretty) { unsigned int i = 0; /* Number of characters printed */ struct type *target_type; CORE_ADDR addr; CHECK_TYPEDEF (type); switch (TYPE_CODE (type)) { case TYPE_CODE_PTR: if (format && format != 's') { 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 0; }
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