| /* Support for printing C++ values for GDB, the GNU debugger. |
| Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
| 2000, 2001, 2002, 2003 |
| 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. */ |
| |
| #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 "demangle.h" |
| #include "annotate.h" |
| #include "gdb_string.h" |
| #include "c-lang.h" |
| #include "target.h" |
| #include "cp-abi.h" |
| #include "valprint.h" |
| |
| /* Indication of presence of HP-compiled object files */ |
| extern int hp_som_som_object_present; /* defined in symtab.c */ |
| |
| |
| int vtblprint; /* Controls printing of vtbl's */ |
| int objectprint; /* Controls looking up an object's derived type |
| using what we find in its vtables. */ |
| int static_field_print; /* Controls printing of static fields. */ |
| |
| static struct obstack dont_print_vb_obstack; |
| static struct obstack dont_print_statmem_obstack; |
| |
| extern void _initialize_cp_valprint (void); |
| |
| static void cp_print_static_field (struct type *, struct value *, |
| struct ui_file *, int, int, |
| enum val_prettyprint); |
| |
| static void cp_print_value (struct type *, struct type *, char *, int, |
| CORE_ADDR, struct ui_file *, int, int, |
| enum val_prettyprint, struct type **); |
| |
| static void cp_print_hpacc_virtual_table_entries (struct type *, int *, |
| struct value *, |
| struct ui_file *, int, |
| int, |
| enum val_prettyprint); |
| |
| |
| void |
| cp_print_class_method (char *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, "<unknown>"); |
| return; |
| } |
| addr = unpack_pointer (type, 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) |
| { |
| /* 1997-08-01 Currently unsupported with HP aCC */ |
| if (hp_som_som_object_present) |
| { |
| fputs_filtered ("?? <not supported with HP aCC>", stream); |
| return; |
| } |
| 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 (strcmp (DEPRECATED_SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)) |
| == 0) |
| 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, "<badly mangled name %s>", |
| 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); |
| } |
| } |
| |
| /* GCC versions after 2.4.5 use this. */ |
| const char vtbl_ptr_name[] = "__vtbl_ptr_type"; |
| |
| /* HP aCC uses different names. */ |
| const char hpacc_vtbl_ptr_name[] = "__vfp"; |
| const char hpacc_vtbl_ptr_type_name[] = "__vftyp"; |
| |
| /* Return truth value for assertion that TYPE is of the type |
| "pointer to virtual function". */ |
| |
| int |
| cp_is_vtbl_ptr_type (struct type *type) |
| { |
| char *typename = type_name_no_tag (type); |
| |
| return (typename != NULL && !strcmp (typename, vtbl_ptr_name)); |
| } |
| |
| /* Return truth value for the assertion that TYPE is of the type |
| "pointer to virtual function table". */ |
| |
| int |
| cp_is_vtbl_member (struct type *type) |
| { |
| /* With older versions of g++, the vtbl field pointed to an array |
| of structures. Nowadays it points directly to the structure. */ |
| 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 cp_is_vtbl_ptr_type (type); |
| } |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) /* if not using thunks */ |
| { |
| return cp_is_vtbl_ptr_type (type); |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ |
| { |
| /* The type name of the thunk pointer is NULL when using dwarf2. |
| We could test for a pointer to a function, but there is |
| no type info for the virtual table either, so it wont help. */ |
| return cp_is_vtbl_ptr_type (type); |
| } |
| } |
| return 0; |
| } |
| |
| /* Mutually recursive subroutines of cp_print_value and c_val_print to |
| print out a structure's fields: cp_print_value_fields and cp_print_value. |
| |
| TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
| same meanings as in cp_print_value and c_val_print. |
| |
| 2nd argument REAL_TYPE is used to carry over the type of the derived |
| class across the recursion to base classes. |
| |
| DONT_PRINT is an array of baseclass types that we |
| should not print, or zero if called from top level. */ |
| |
| void |
| cp_print_value_fields (struct type *type, struct type *real_type, char *valaddr, |
| int offset, 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); |
| int fields_seen = 0; |
| |
| CHECK_TYPEDEF (type); |
| |
| fprintf_filtered (stream, "{"); |
| len = TYPE_NFIELDS (type); |
| n_baseclasses = TYPE_N_BASECLASSES (type); |
| |
| /* First, print out baseclasses such that we don't print |
| duplicates of virtual baseclasses. */ |
| |
| if (n_baseclasses > 0) |
| cp_print_value (type, real_type, valaddr, offset, address, stream, |
| format, recurse + 1, pretty, dont_print_vb); |
| |
| /* Second, print out data fields */ |
| |
| /* If there are no data fields, or if the only field is the |
| * vtbl pointer, skip this part */ |
| if ((len == n_baseclasses) |
| || ((len - n_baseclasses == 1) |
| && TYPE_HAS_VTABLE (type) |
| && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
| hpacc_vtbl_ptr_name, 5) == 0) |
| || !len) |
| fprintf_filtered (stream, "<No data fields>"); |
| else |
| { |
| 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 (!static_field_print && TYPE_FIELD_STATIC (type, i)) |
| continue; |
| |
| /* If a vtable pointer appears, we'll print it out later */ |
| if (TYPE_HAS_VTABLE (type) |
| && strncmp (TYPE_FIELD_NAME (type, i), hpacc_vtbl_ptr_name, |
| 5) == 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 (); |
| /* do not print leading '=' in case of anonymous unions */ |
| if (strcmp (TYPE_FIELD_NAME (type, i), "")) |
| 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 + offset, 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 |
| cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, |
| stream, format, recurse + 1, |
| pretty); |
| } |
| else |
| { |
| val_print (TYPE_FIELD_TYPE (type, i), |
| valaddr, offset + 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); |
| } |
| } /* if there are data fields */ |
| /* Now print out the virtual table pointer if there is one */ |
| if (TYPE_HAS_VTABLE (type) |
| && strncmp (TYPE_FIELD_NAME (type, n_baseclasses), |
| hpacc_vtbl_ptr_name, 5) == 0) |
| { |
| struct value *v; |
| /* First get the virtual table pointer and print it out */ |
| |
| #if 0 |
| fputs_filtered ("__vfp = ", stream); |
| #endif |
| |
| fputs_filtered (", Virtual table at ", stream); |
| |
| /* pai: FIXME 32x64 problem? */ |
| /* Not sure what the best notation is in the case where there is no |
| baseclass name. */ |
| v = value_from_pointer (lookup_pointer_type (builtin_type_unsigned_long), |
| *(unsigned long *) (valaddr + offset)); |
| |
| val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, |
| stream, format, 0, recurse + 1, pretty); |
| fields_seen = 1; |
| |
| if (vtblprint) |
| { |
| /* Print out function pointers in vtable. */ |
| |
| /* FIXME: then-clause is for non-RRBC layout of virtual |
| * table. The RRBC case in the else-clause is yet to be |
| * implemented. The if (1) below should be changed to a |
| * test for whether the executable we have was compiled |
| * with a version of HP aCC that doesn't have RRBC |
| * support. */ |
| |
| if (1) |
| { |
| /* no RRBC support; function pointers embedded directly |
| in vtable */ |
| |
| int vfuncs = count_virtual_fns (real_type); |
| |
| fputs_filtered (" {", stream); |
| |
| /* FIXME : doesn't work at present */ |
| #if 0 |
| fprintf_filtered (stream, "%d entr%s: ", vfuncs, |
| vfuncs == 1 ? "y" : "ies"); |
| #else |
| fputs_filtered ("not implemented", stream); |
| |
| |
| #endif |
| |
| /* recursive function that prints all virtual function entries */ |
| #if 0 |
| cp_print_hpacc_virtual_table_entries (real_type, &vfuncs, v, |
| stream, format, recurse, |
| pretty); |
| #endif |
| fputs_filtered ("}", stream); |
| } /* non-RRBC case */ |
| else |
| { |
| /* FIXME -- see comments above */ |
| /* RRBC support present; function pointers are found |
| * by indirection through the class segment entries. */ |
| |
| |
| } /* RRBC case */ |
| } /* if vtblprint */ |
| |
| if (pretty) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 * recurse, stream); |
| } |
| |
| } /* if vtable exists */ |
| |
| fprintf_filtered (stream, "}"); |
| } |
| |
| /* Special val_print routine to avoid printing multiple copies of virtual |
| baseclasses. */ |
| |
| static void |
| cp_print_value (struct type *type, struct type *real_type, char *valaddr, |
| int offset, 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); |
| int thisoffset; |
| struct type *thistype; |
| |
| 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; |
| int skip; |
| struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| char *basename = TYPE_NAME (baseclass); |
| char *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); |
| } |
| |
| thisoffset = offset; |
| thistype = real_type; |
| if (TYPE_HAS_VTABLE (type) && BASETYPE_VIA_VIRTUAL (type, i)) |
| { |
| /* Assume HP/Taligent runtime convention */ |
| find_rt_vbase_offset (type, TYPE_BASECLASS (type, i), |
| valaddr, offset, &boffset, &skip); |
| if (skip >= 0) |
| error ("Virtual base class offset not found from vtable while" |
| " printing"); |
| base_valaddr = valaddr; |
| } |
| else |
| { |
| boffset = baseclass_offset (type, i, |
| valaddr + offset, |
| address); |
| skip = ((boffset == -1) || (boffset + offset) < 0) ? 1 : -1; |
| |
| if (BASETYPE_VIA_VIRTUAL (type, i)) |
| { |
| /* 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 + offset) < 0 |
| || (boffset + offset) >= TYPE_LENGTH (type))) |
| { |
| /* FIXME (alloca): unsafe if baseclass is really really large. */ |
| base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); |
| if (target_read_memory (address + boffset, base_valaddr, |
| TYPE_LENGTH (baseclass)) != 0) |
| skip = 1; |
| address = address + boffset; |
| thisoffset = 0; |
| boffset = 0; |
| thistype = baseclass; |
| } |
| else |
| base_valaddr = valaddr; |
| } |
| else |
| base_valaddr = valaddr; |
| } |
| |
| /* now do the printing */ |
| 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); |
| |
| |
| if (skip >= 1) |
| fprintf_filtered (stream, "<invalid address>"); |
| else |
| cp_print_value_fields (baseclass, thistype, base_valaddr, |
| thisoffset + boffset, 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 |
| cp_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 ("<same as static member of an already" |
| " seen type>", |
| stream); |
| return; |
| } |
| } |
| |
| obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), |
| sizeof (CORE_ADDR)); |
| |
| CHECK_TYPEDEF (type); |
| cp_print_value_fields (type, type, VALUE_CONTENTS_ALL (val), |
| VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), |
| stream, format, recurse, pretty, NULL, 1); |
| return; |
| } |
| val_print (type, VALUE_CONTENTS_ALL (val), |
| VALUE_EMBEDDED_OFFSET (val), VALUE_ADDRESS (val), |
| stream, format, 0, recurse, pretty); |
| } |
| |
| void |
| cp_print_class_member (char *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 */ |
| |
| /* Note: HP aCC generates offsets that are the real byte offsets added |
| to a constant bias 0x20000000 (1 << 29). This constant bias gets |
| shifted out in the code below -- joyous happenstance! */ |
| |
| /* Note: HP cfront uses a constant bias of 1; if we support this |
| compiler ever, we will have to adjust the computation below */ |
| |
| 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 |
| c_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) (val >> 3)); |
| } |
| |
| |
| /* This function prints out virtual table entries for a class; it |
| * recurses on the base classes to find all virtual functions |
| * available in a class. |
| * |
| * pai/1997-05-21 Note: As the name suggests, it's currently |
| * implemented for HP aCC runtime only. g++ objects are handled |
| * differently and I have made no attempt to fold that logic in |
| * here. The runtime layout is different for the two cases. Also, |
| * this currently has only the code for non-RRBC layouts generated by |
| * the HP aCC compiler; RRBC code is stubbed out and will have to be |
| * added later. */ |
| |
| |
| static void |
| cp_print_hpacc_virtual_table_entries (struct type *type, int *vfuncs, |
| struct value *v, struct ui_file *stream, |
| int format, int recurse, |
| enum val_prettyprint pretty) |
| { |
| int fn, oi; |
| |
| /* pai: FIXME this function doesn't work. It should handle a given |
| * virtual function only once (latest redefinition in class hierarchy) |
| */ |
| |
| /* Recursion on other classes that can share the same vtable */ |
| struct type *pbc = primary_base_class (type); |
| if (pbc) |
| cp_print_hpacc_virtual_table_entries (pbc, vfuncs, v, stream, format, |
| recurse, pretty); |
| |
| /* Now deal with vfuncs declared in this class */ |
| for (fn = 0; fn < TYPE_NFN_FIELDS (type); fn++) |
| for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (type, fn); oi++) |
| if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (type, fn), oi)) |
| { |
| char *vf_name; |
| const char *field_physname; |
| |
| /* virtual function offset */ |
| int vx = (TYPE_FN_FIELD_VOFFSET (TYPE_FN_FIELDLIST1 (type, fn), oi) |
| - 1); |
| |
| /* Get the address of the vfunction entry */ |
| struct value *vf = value_copy (v); |
| if (VALUE_LAZY (vf)) |
| (void) value_fetch_lazy (vf); |
| /* adjust by offset */ |
| vf->aligner.contents[0] += 4 * (HP_ACC_VFUNC_START + vx); |
| vf = value_ind (vf); /* get the entry */ |
| VALUE_TYPE (vf) = VALUE_TYPE (v); /* make it a pointer */ |
| |
| /* print out the entry */ |
| val_print (VALUE_TYPE (vf), VALUE_CONTENTS (vf), 0, 0, |
| stream, format, 0, recurse + 1, pretty); |
| field_physname |
| = TYPE_FN_FIELD_PHYSNAME (TYPE_FN_FIELDLIST1 (type, fn), oi); |
| /* pai: (temp) FIXME Maybe this should be DMGL_ANSI */ |
| vf_name = cplus_demangle (field_physname, DMGL_ARM); |
| fprintf_filtered (stream, " %s", vf_name); |
| if (--(*vfuncs) > 0) |
| fputs_filtered (", ", stream); |
| } |
| } |
| |
| |
| |
| void |
| _initialize_cp_valprint (void) |
| { |
| add_show_from_set |
| (add_set_cmd ("static-members", class_support, var_boolean, |
| (char *) &static_field_print, |
| "Set printing of C++ static members.", |
| &setprintlist), |
| &showprintlist); |
| /* Turn on printing of static fields. */ |
| static_field_print = 1; |
| |
| add_show_from_set |
| (add_set_cmd ("vtbl", class_support, var_boolean, (char *) &vtblprint, |
| "Set printing of C++ virtual function tables.", |
| &setprintlist), |
| &showprintlist); |
| |
| add_show_from_set |
| (add_set_cmd ("object", class_support, var_boolean, (char *) &objectprint, |
| "Set printing of object's derived type based on vtable info.", |
| &setprintlist), |
| &showprintlist); |
| |
| /* Give people the defaults which they are used to. */ |
| objectprint = 0; |
| vtblprint = 0; |
| obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); |
| obstack_specify_allocation (&dont_print_statmem_obstack, |
| 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), |
| xmalloc, xfree); |
| } |