/* Support for printing Pascal values for GDB, the GNU debugger. Copyright 2000, 2001, 2003, 2005 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 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. 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. */ /* This file is derived from c-valprint.c */ #include "defs.h" #include "gdb_obstack.h" #include "symtab.h" #include "gdbtypes.h" #include "expression.h" #include "value.h" #include "command.h" #include "gdbcmd.h" #include "gdbcore.h" #include "demangle.h" #include "valprint.h" #include "typeprint.h" #include "language.h" #include "target.h" #include "annotate.h" #include "p-lang.h" #include "cp-abi.h" /* 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 pascal_val_print (struct type *type, const bfd_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 */ unsigned len; struct type *elttype; unsigned eltlen; int length_pos, length_size, string_pos; int char_size; LONGEST val; CORE_ADDR addr; CHECK_TYPEDEF (type); switch (TYPE_CODE (type)) { case TYPE_CODE_ARRAY: if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) { elttype = check_typedef (TYPE_TARGET_TYPE (type)); eltlen = TYPE_LENGTH (elttype); len = TYPE_LENGTH (type) / eltlen; if (prettyprint_arrays) { print_spaces_filtered (2 + 2 * recurse, stream); } /* For an array of chars, print with string syntax. */ if (eltlen == 1 && ((TYPE_CODE (elttype) == TYPE_CODE_INT) || ((current_language->la_language == language_m2) && (TYPE_CODE (elttype) == TYPE_CODE_CHAR))) && (format == 0 || format == 's')) { /* If requested, look for the first null char and only print elements up to it. */ if (stop_print_at_null) { unsigned int temp_len; /* Look for a NULL char. */ for (temp_len = 0; (valaddr + embedded_offset)[temp_len] && temp_len < len && temp_len < print_max; temp_len++); len = temp_len; } LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0); i = len; } else { fprintf_filtered (stream, "{"); /* If this is a virtual function table, print the 0th entry specially, and the rest of the members normally. */ if (pascal_object_is_vtbl_ptr_type (elttype)) { i = 1; fprintf_filtered (stream, "%d vtable entries", len - 1); } else { i = 0; } val_print_array_elements (type, valaddr + embedded_offset, address, stream, format, deref_ref, recurse, pretty, i); fprintf_filtered (stream, "}"); } break; } /* Array of unspecified length: treat like pointer to first elt. */ addr = address; goto print_unpacked_pointer; case TYPE_CODE_PTR: if (format && format != 's') { print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); break; } if (vtblprint && pascal_object_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 the address, assume that it is unsigned. */ print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)), stream, demangle); break; } elttype = check_typedef (TYPE_TARGET_TYPE (type)); if (TYPE_CODE (elttype) == TYPE_CODE_METHOD) { pascal_object_print_class_method (valaddr + embedded_offset, type, stream); } else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) { pascal_object_print_class_member (valaddr + embedded_offset, TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)), stream, "&"); } else { addr = unpack_pointer (type, valaddr + embedded_offset); print_unpacked_pointer: elttype = check_typedef (TYPE_TARGET_TYPE (type)); if (TYPE_CODE (elttype) == 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') { print_address_numeric (addr, 1, stream); } /* For a pointer to char or unsigned char, also print the string pointed to, unless pointer is null. */ if (TYPE_LENGTH (elttype) == 1 && TYPE_CODE (elttype) == TYPE_CODE_INT && (format == 0 || format == 's') && addr != 0) { /* no wide string yet */ i = val_print_string (addr, -1, 1, stream); } /* also for pointers to pascal strings */ /* Note: this is Free Pascal specific: as GDB does not recognize stabs pascal strings Pascal strings are mapped to records with lowercase names PM */ if (is_pascal_string_type (elttype, &length_pos, &length_size, &string_pos, &char_size, NULL) && addr != 0) { ULONGEST string_length; void *buffer; buffer = xmalloc (length_size); read_memory (addr + length_pos, buffer, length_size); string_length = extract_unsigned_integer (buffer, length_size); xfree (buffer); i = val_print_string (addr + string_pos, string_length, char_size, stream); } else if (pascal_object_is_vtbl_member (type)) { /* print vtbl's nicely */ CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (vt_address); if ((msymbol != NULL) && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) { fputs_filtered (" <", stream); fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); fputs_filtered (">", stream); } if (vt_address && vtblprint) { struct value *vt_val; struct symbol *wsym = (struct symbol *) NULL; struct type *wtype; struct block *block = (struct block *) NULL; int is_this_fld; if (msymbol != NULL) wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block, VAR_DOMAIN, &is_this_fld, NULL); if (wsym) { wtype = SYMBOL_TYPE (wsym); } else { wtype = TYPE_TARGET_TYPE (type); } vt_val = value_at (wtype, vt_address); val_print (value_type (vt_val), value_contents (vt_val), 0, VALUE_ADDRESS (vt_val), stream, format, deref_ref, recurse + 1, pretty); if (pretty) { fprintf_filtered (stream, "\n"); print_spaces_filtered (2 + 2 * recurse, stream); } } } /* Return number of characters printed, including the terminating '\0' if we reached the end. val_print_string takes care including the terminating '\0' if necessary. */ return i; } break; case TYPE_CODE_MEMBER: error ("not implemented: member type in pascal_val_print"); break; case TYPE_CODE_REF: elttype = check_typedef (TYPE_TARGET_TYPE (type)); if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) { pascal_object_print_class_member (valaddr + embedded_offset, TYPE_DOMAIN_TYPE (elttype), stream, ""); break; } if (addressprint) { fprintf_filtered (stream, "@"); /* Extract the address, assume that it is unsigned. */ print_address_numeric (extract_unsigned_integer (valaddr + embedded_offset, TARGET_PTR_BIT / HOST_CHAR_BIT), 1, stream); if (deref_ref) fputs_filtered (": ", stream); } /* De-reference the reference. */ if (deref_ref) { if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) { struct value *deref_val = value_at (TYPE_TARGET_TYPE (type), unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr + embedded_offset)); val_print (value_type (deref_val), value_contents (deref_val), 0, VALUE_ADDRESS (deref_val), stream, format, deref_ref, recurse + 1, pretty); } else fputs_filtered ("???", stream); } break; case TYPE_CODE_UNION: if (recurse && !unionprint) { fprintf_filtered (stream, "{...}"); break; } /* Fall through. */ case TYPE_CODE_STRUCT: if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) { /* Print the unmangled name if desired. */ /* Print vtable entry - we only get here if NOT using -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ /* Extract the address, assume that it is unsigned. */ print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), stream, demangle); } else { if (is_pascal_string_type (type, &length_pos, &length_size, &string_pos, &char_size, NULL)) { len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size); LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 0); } else pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, recurse, pretty, NULL, 0); } break; case TYPE_CODE_ENUM: if (format) { print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); break; } len = TYPE_NFIELDS (type); val = unpack_long (type, valaddr + embedded_offset); for (i = 0; i < len; i++) { QUIT; if (val == TYPE_FIELD_BITPOS (type, i)) { break; } } if (i < len) { fputs_filtered (TYPE_FIELD_NAME (type, i), stream); } else { print_longest (stream, 'd', 0, val); } break; case TYPE_CODE_FUNC: if (format) { print_scalar_formatted (valaddr + embedded_offset, type, format, 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 (address, stream, demangle); break; case TYPE_CODE_BOOL: format = format ? format : output_format; if (format) print_scalar_formatted (valaddr + embedded_offset, type, format, 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 { fputs_filtered ("true (", stream); fprintf_filtered (stream, "%ld)", (long int) val); } } break; case TYPE_CODE_RANGE: /* 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: format = format ? format : output_format; if (format) { print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); } else { val_print_type_code_int (type, valaddr + embedded_offset, stream); } break; case TYPE_CODE_CHAR: format = format ? format : output_format; if (format) { print_scalar_formatted (valaddr + embedded_offset, type, format, 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, stream); } break; case TYPE_CODE_FLT: if (format) { print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); } else { print_floating (valaddr + embedded_offset, type, stream); } break; case TYPE_CODE_BITSTRING: case TYPE_CODE_SET: elttype = TYPE_INDEX_TYPE (type); CHECK_TYPEDEF (elttype); if (TYPE_STUB (elttype)) { fprintf_filtered (stream, ""); 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 ("", 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, ""); 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, ""); break; default: error ("Invalid pascal type code %d in symbol table.", TYPE_CODE (type)); } gdb_flush (stream); return (0); } int pascal_value_print (struct value *val, struct ui_file *stream, int format, enum val_prettyprint pretty) { struct type *type = value_type (val); /* If it is a pointer, indicate what it points to. Print type also if it is a reference. Object pascal: if it is a member pointer, we will take care of that when we print it. */ if (TYPE_CODE (type) == TYPE_CODE_PTR || TYPE_CODE (type) == TYPE_CODE_REF) { /* Hack: remove (char *) for char strings. Their type is indicated by the quoted string anyway. */ if (TYPE_CODE (type) == TYPE_CODE_PTR && TYPE_NAME (type) == NULL && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) { /* Print nothing */ } else { fprintf_filtered (stream, "("); type_print (type, "", stream, -1); fprintf_filtered (stream, ") "); } } return val_print (type, value_contents (val), VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val) + value_offset (val), stream, format, 1, 0, pretty); } /****************************************************************************** Inserted from cp-valprint ******************************************************************************/ extern int vtblprint; /* Controls printing of vtbl's */ extern int objectprint; /* Controls looking up an object's derived type using what we find in its vtables. */ static int pascal_static_field_print; /* Controls printing of static fields. */ static struct obstack dont_print_vb_obstack; static struct obstack dont_print_statmem_obstack; static void pascal_object_print_static_field (struct type *, struct value *, struct ui_file *, int, int, enum val_prettyprint); static void pascal_object_print_value (struct type *, const bfd_byte *, CORE_ADDR, struct ui_file *, int, int, enum val_prettyprint, struct type **); void pascal_object_print_class_method (const bfd_byte *valaddr, struct type *type, struct ui_file *stream) { struct type *domain; struct fn_field *f = NULL; int j = 0; int len2; int offset; char *kind = ""; CORE_ADDR addr; struct symbol *sym; unsigned len; unsigned int i; struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); domain = TYPE_DOMAIN_TYPE (target_type); if (domain == (struct type *) NULL) { fprintf_filtered (stream, ""); return; } addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); if (METHOD_PTR_IS_VIRTUAL (addr)) { offset = METHOD_PTR_TO_VOFFSET (addr); len = TYPE_NFN_FIELDS (domain); for (i = 0; i < len; i++) { f = TYPE_FN_FIELDLIST1 (domain, i); len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); check_stub_method_group (domain, i); for (j = 0; j < len2; j++) { if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) { kind = "virtual "; goto common; } } } } else { sym = find_pc_function (addr); if (sym == 0) { error ("invalid pointer to member function"); } len = TYPE_NFN_FIELDS (domain); for (i = 0; i < len; i++) { f = TYPE_FN_FIELDLIST1 (domain, i); len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); check_stub_method_group (domain, i); for (j = 0; j < len2; j++) { if (DEPRECATED_STREQ (DEPRECATED_SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) goto common; } } } common: if (i < len) { char *demangled_name; fprintf_filtered (stream, "&"); fputs_filtered (kind, stream); demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), DMGL_ANSI | DMGL_PARAMS); if (demangled_name == NULL) fprintf_filtered (stream, "", TYPE_FN_FIELD_PHYSNAME (f, j)); else { fputs_filtered (demangled_name, stream); xfree (demangled_name); } } else { fprintf_filtered (stream, "("); type_print (type, "", stream, -1); fprintf_filtered (stream, ") %d", (int) addr >> 3); } } /* It was changed to this after 2.4.5. */ const char pascal_vtbl_ptr_name[] = {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; /* Return truth value for assertion that TYPE is of the type "pointer to virtual function". */ int pascal_object_is_vtbl_ptr_type (struct type *type) { char *typename = type_name_no_tag (type); return (typename != NULL && strcmp (typename, pascal_vtbl_ptr_name) == 0); } /* Return truth value for the assertion that TYPE is of the type "pointer to virtual function table". */ int pascal_object_is_vtbl_member (struct type *type) { if (TYPE_CODE (type) == TYPE_CODE_PTR) { type = TYPE_TARGET_TYPE (type); if (TYPE_CODE (type) == TYPE_CODE_ARRAY) { type = TYPE_TARGET_TYPE (type); if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ { /* Virtual functions tables are full of pointers to virtual functions. */ return pascal_object_is_vtbl_ptr_type (type); } } } return 0; } /* Mutually recursive subroutines of pascal_object_print_value and c_val_print to print out a structure's fields: pascal_object_print_value_fields and pascal_object_print_value. TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the same meanings as in pascal_object_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. */ void pascal_object_print_value_fields (struct type *type, const bfd_byte *valaddr, CORE_ADDR address, struct ui_file *stream, int format, int recurse, enum val_prettyprint pretty, struct type **dont_print_vb, int dont_print_statmem) { int i, len, n_baseclasses; struct obstack tmp_obstack; char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); CHECK_TYPEDEF (type); fprintf_filtered (stream, "{"); len = TYPE_NFIELDS (type); n_baseclasses = TYPE_N_BASECLASSES (type); /* Print out baseclasses such that we don't print duplicates of virtual baseclasses. */ if (n_baseclasses > 0) pascal_object_print_value (type, valaddr, address, stream, format, recurse + 1, pretty, dont_print_vb); if (!len && n_baseclasses == 1) fprintf_filtered (stream, ""); else { int fields_seen = 0; if (dont_print_statmem == 0) { /* If we're at top level, carve out a completely fresh chunk of the obstack and use that until this particular invocation returns. */ tmp_obstack = dont_print_statmem_obstack; obstack_finish (&dont_print_statmem_obstack); } for (i = n_baseclasses; i < len; i++) { /* If requested, skip printing of static fields. */ if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) 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 ("", 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 ("", stream); } else if (TYPE_FIELD_STATIC (type, i)) { /* struct value *v = value_static_field (type, i); v4.17 specific */ struct value *v; v = value_from_longest (TYPE_FIELD_TYPE (type, i), unpack_field_as_long (type, valaddr, i)); if (v == NULL) fputs_filtered ("", stream); else pascal_object_print_static_field (TYPE_FIELD_TYPE (type, i), v, stream, format, recurse + 1, pretty); } else { /* val_print (TYPE_FIELD_TYPE (type, i), valaddr + TYPE_FIELD_BITPOS (type, i) / 8, address + TYPE_FIELD_BITPOS (type, i) / 8, 0, stream, format, 0, recurse + 1, pretty); */ val_print (TYPE_FIELD_TYPE (type, i), valaddr, TYPE_FIELD_BITPOS (type, i) / 8, address + TYPE_FIELD_BITPOS (type, i) / 8, stream, format, 0, recurse + 1, pretty); } } annotate_field_end (); } if (dont_print_statmem == 0) { /* Free the space used to deal with the printing of the members from top level. */ obstack_free (&dont_print_statmem_obstack, last_dont_print); dont_print_statmem_obstack = tmp_obstack; } if (pretty) { fprintf_filtered (stream, "\n"); print_spaces_filtered (2 * recurse, stream); } } fprintf_filtered (stream, "}"); } /* Special val_print routine to avoid printing multiple copies of virtual baseclasses. */ void pascal_object_print_value (struct type *type, const bfd_byte *valaddr, CORE_ADDR address, struct ui_file *stream, int format, int recurse, enum val_prettyprint pretty, struct type **dont_print_vb) { struct obstack tmp_obstack; struct type **last_dont_print = (struct type **) obstack_next_free (&dont_print_vb_obstack); int i, n_baseclasses = TYPE_N_BASECLASSES (type); if (dont_print_vb == 0) { /* If we're at top level, carve out a completely fresh chunk of the obstack and use that until this particular invocation returns. */ tmp_obstack = dont_print_vb_obstack; /* Bump up the high-water mark. Now alpha is omega. */ obstack_finish (&dont_print_vb_obstack); } for (i = 0; i < n_baseclasses; i++) { int boffset; struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); char *basename = TYPE_NAME (baseclass); const bfd_byte *base_valaddr; if (BASETYPE_VIA_VIRTUAL (type, i)) { struct type **first_dont_print = (struct type **) obstack_base (&dont_print_vb_obstack); int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) - first_dont_print; while (--j >= 0) if (baseclass == first_dont_print[j]) goto flush_it; obstack_ptr_grow (&dont_print_vb_obstack, baseclass); } boffset = baseclass_offset (type, i, valaddr, address); if (pretty) { fprintf_filtered (stream, "\n"); print_spaces_filtered (2 * recurse, 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); /* The virtual base class pointer might have been clobbered by the user program. Make sure that it still points to a valid memory location. */ if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) { /* FIXME (alloc): not safe is baseclass is really really big. */ bfd_byte *buf = alloca (TYPE_LENGTH (baseclass)); base_valaddr = buf; if (target_read_memory (address + boffset, buf, TYPE_LENGTH (baseclass)) != 0) boffset = -1; } else base_valaddr = valaddr + boffset; if (boffset == -1) fprintf_filtered (stream, ""); else pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, stream, format, recurse, pretty, (struct type **) obstack_base (&dont_print_vb_obstack), 0); fputs_filtered (", ", stream); flush_it: ; } if (dont_print_vb == 0) { /* Free the space used to deal with the printing of this type from top level. */ obstack_free (&dont_print_vb_obstack, last_dont_print); /* Reset watermark so that we can continue protecting ourselves from whatever we were protecting ourselves. */ dont_print_vb_obstack = tmp_obstack; } } /* Print value of a static member. To avoid infinite recursion when printing a class that contains a static instance of the class, we keep the addresses of all printed static member classes in an obstack and refuse to print them more than once. VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY have the same meanings as in c_val_print. */ static void pascal_object_print_static_field (struct type *type, struct value *val, struct ui_file *stream, int format, int recurse, enum val_prettyprint pretty) { if (TYPE_CODE (type) == TYPE_CODE_STRUCT) { CORE_ADDR *first_dont_print; int i; first_dont_print = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) - first_dont_print; while (--i >= 0) { if (VALUE_ADDRESS (val) == first_dont_print[i]) { fputs_filtered ("", stream); return; } } obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), sizeof (CORE_ADDR)); CHECK_TYPEDEF (type); pascal_object_print_value_fields (type, value_contents (val), VALUE_ADDRESS (val), stream, format, recurse, pretty, NULL, 1); return; } val_print (type, value_contents (val), 0, VALUE_ADDRESS (val), stream, format, 0, recurse, pretty); } void pascal_object_print_class_member (const bfd_byte *valaddr, struct type *domain, struct ui_file *stream, char *prefix) { /* VAL is a byte offset into the structure type DOMAIN. Find the name of the field for that offset and print it. */ int extra = 0; int bits = 0; unsigned int i; unsigned len = TYPE_NFIELDS (domain); /* @@ Make VAL into bit offset */ LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; for (i = TYPE_N_BASECLASSES (domain); i < len; i++) { int bitpos = TYPE_FIELD_BITPOS (domain, i); QUIT; if (val == bitpos) break; if (val < bitpos && i != 0) { /* Somehow pointing into a field. */ i -= 1; extra = (val - TYPE_FIELD_BITPOS (domain, i)); if (extra & 0x7) bits = 1; else extra >>= 3; break; } } if (i < len) { char *name; fputs_filtered (prefix, stream); name = type_name_no_tag (domain); if (name) fputs_filtered (name, stream); else pascal_type_print_base (domain, stream, 0, 0); fprintf_filtered (stream, "::"); fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); if (extra) fprintf_filtered (stream, " + %d bytes", extra); if (bits) fprintf_filtered (stream, " (offset in bits)"); } else fprintf_filtered (stream, "%ld", (long int) (val >> 3)); } extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */ void _initialize_pascal_valprint (void) { deprecated_add_show_from_set (add_set_cmd ("pascal_static-members", class_support, var_boolean, (char *) &pascal_static_field_print, "Set printing of pascal static members.", &setprintlist), &showprintlist); /* Turn on printing of static fields. */ pascal_static_field_print = 1; }