- if (string[0] == CPLUS_MARKER)
- {
- /* Special GNU C++ names. */
- switch (string[1])
- {
- case 't':
- SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"),
- &objfile -> symbol_obstack);
- break;
- case 'v': /* $vtbl_ptr_type */
- /* Was: SYMBOL_NAME (sym) = "vptr"; */
- goto normal;
- case 'e':
- SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"),
- &objfile -> symbol_obstack);
- break;
-
- case '_':
- /* This was an anonymous type that was never fixed up. */
- goto normal;
-
- default:
- abort ();
- }
- }
- else
- {
- normal:
- SYMBOL_NAME (sym)
- = (char *) obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1));
- /* Open-coded bcopy--saves function call time. */
- {
- register char *p1 = string;
- register char *p2 = SYMBOL_NAME (sym);
- while (p1 != p)
- *p2++ = *p1++;
- *p2++ = '\0';
- }
- }
- p++;
- /* Determine the type of name being defined. */
- /* The Acorn RISC machine's compiler can put out locals that don't
- start with "234=" or "(3,4)=", so assume anything other than the
- deftypes we know how to handle is a local. */
- /* (Peter Watkins @ Computervision)
- Handle Sun-style local fortran array types 'ar...' .
- (gnu@cygnus.com) -- this strchr() handles them properly?
- (tiemann@cygnus.com) -- 'C' is for catch. */
- if (!strchr ("cfFGpPrStTvVXC", *p))
- deftype = 'l';
- else
- deftype = *p++;
-
- /* c is a special case, not followed by a type-number.
- SYMBOL:c=iVALUE for an integer constant symbol.
- SYMBOL:c=rVALUE for a floating constant symbol.
- SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
- e.g. "b:c=e6,0" for "const b = blob1"
- (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
- if (deftype == 'c')
- {
- if (*p++ != '=')
- error ("Invalid symbol data at symtab pos %d.", symnum);
- switch (*p++)
- {
- case 'r':
- {
- double d = atof (p);
- char *dbl_valu;
-
- SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
- FT_DBL_PREC_FLOAT);
- dbl_valu = (char *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (double));
- memcpy (dbl_valu, &d, sizeof (double));
- SWAP_TARGET_AND_HOST (dbl_valu, sizeof (double));
- SYMBOL_VALUE_BYTES (sym) = dbl_valu;
- SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
- }
- break;
- case 'i':
- {
- SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
- FT_INTEGER);
- SYMBOL_VALUE (sym) = atoi (p);
- SYMBOL_CLASS (sym) = LOC_CONST;
- }
- break;
- case 'e':
- /* SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
- e.g. "b:c=e6,0" for "const b = blob1"
- (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
- {
- int typenums[2];
-
- read_type_number (&p, typenums);
- if (*p++ != ',')
- error ("Invalid symbol data: no comma in enum const symbol");
-
- SYMBOL_TYPE (sym) = *dbx_lookup_type (typenums);
- SYMBOL_VALUE (sym) = atoi (p);
- SYMBOL_CLASS (sym) = LOC_CONST;
- }
- break;
- default:
- error ("Invalid symbol data at symtab pos %d.", symnum);
- }
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &file_symbols);
- return sym;
- }
-
- /* Now usually comes a number that says which data type,
- and possibly more stuff to define the type
- (all of which is handled by read_type) */
-
- if (deftype == 'p' && *p == 'F')
- /* pF is a two-letter code that means a function parameter in Fortran.
- The type-number specifies the type of the return value.
- Translate it into a pointer-to-function type. */
- {
- p++;
- SYMBOL_TYPE (sym)
- = lookup_pointer_type (lookup_function_type (read_type (&p, objfile)));
- }
- else
- {
- struct type *type_read;
- synonym = *p == 't';
-
- if (synonym)
- {
- p += 1;
- type_synonym_name = obsavestring (SYMBOL_NAME (sym),
- strlen (SYMBOL_NAME (sym)),
- &objfile -> symbol_obstack);
- }
-
- /* Here we save the name of the symbol for read_range_type, which
- ends up reading in the basic types. In stabs, unfortunately there
- is no distinction between "int" and "long" types except their
- names. Until we work out a saner type policy (eliminating most
- builtin types and using the names specified in the files), we
- save away the name so that far away from here in read_range_type,
- we can examine it to decide between "int" and "long". FIXME. */
- long_kludge_name = SYMBOL_NAME (sym);
- type_read = read_type (&p, objfile);
-
- if ((deftype == 'F' || deftype == 'f')
- && TYPE_CODE (type_read) != TYPE_CODE_FUNC)
- {
-#if 0
-/* This code doesn't work -- it needs to realloc and can't. */
- struct type *new = (struct type *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct type));
-
- /* Generate a template for the type of this function. The
- types of the arguments will be added as we read the symbol
- table. */
- *new = *lookup_function_type (type_read);
- SYMBOL_TYPE(sym) = new;
- TYPE_OBJFILE (new) = objfile;
- in_function_type = new;
-#else
- SYMBOL_TYPE (sym) = lookup_function_type (type_read);
-#endif
- }
- else
- SYMBOL_TYPE (sym) = type_read;
- }
-
- switch (deftype)
- {
- case 'C':
- /* The name of a caught exception. */
- SYMBOL_CLASS (sym) = LOC_LABEL;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- SYMBOL_VALUE_ADDRESS (sym) = valu;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'f':
- SYMBOL_CLASS (sym) = LOC_BLOCK;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &file_symbols);
- break;
-
- case 'F':
- SYMBOL_CLASS (sym) = LOC_BLOCK;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &global_symbols);
- break;
-
- case 'G':
- /* For a class G (global) symbol, it appears that the
- value is not correct. It is necessary to search for the
- corresponding linker definition to find the value.
- These definitions appear at the end of the namelist. */
- i = hashname (SYMBOL_NAME (sym));
- SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
- global_sym_chain[i] = sym;
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &global_symbols);
- break;
-
- /* This case is faked by a conditional above,
- when there is no code letter in the dbx data.
- Dbx data never actually contains 'l'. */
- case 'l':
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'p':
- /* Normally this is a parameter, a LOC_ARG. On the i960, it
- can also be a LOC_LOCAL_ARG depending on symbol type. */
-#ifndef DBX_PARM_SYMBOL_CLASS
-#define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
-#endif
- SYMBOL_CLASS (sym) = DBX_PARM_SYMBOL_CLASS (type);
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
-#if 0
- /* This doesn't work yet. */
- add_param_to_type (&in_function_type, sym);
-#endif
- add_symbol_to_list (sym, &local_symbols);
-
- /* If it's gcc-compiled, if it says `short', believe it. */
- if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
- break;
-
-#if defined(BELIEVE_PCC_PROMOTION_TYPE)
- /* This macro is defined on machines (e.g. sparc) where
- we should believe the type of a PCC 'short' argument,
- but shouldn't believe the address (the address is
- the address of the corresponding int). Note that
- this is only different from the BELIEVE_PCC_PROMOTION
- case on big-endian machines.
-
- My guess is that this correction, as opposed to changing
- the parameter to an 'int' (as done below, for PCC
- on most machines), is the right thing to do
- on all machines, but I don't want to risk breaking
- something that already works. On most PCC machines,
- the sparc problem doesn't come up because the calling
- function has to zero the top bytes (not knowing whether
- the called function wants an int or a short), so there
- is no practical difference between an int and a short
- (except perhaps what happens when the GDB user types
- "print short_arg = 0x10000;").
-
- Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler
- actually produces the correct address (we don't need to fix it
- up). I made this code adapt so that it will offset the symbol
- if it was pointing at an int-aligned location and not
- otherwise. This way you can use the same gdb for 4.0.x and
- 4.1 systems.
-
- If the parameter is shorter than an int, and is integral
- (e.g. char, short, or unsigned equivalent), and is claimed to
- be passed on an integer boundary, don't believe it! Offset the
- parameter's address to the tail-end of that integer. */
-
- temptype = lookup_fundamental_type (objfile, FT_INTEGER);
- if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
- && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
- && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype))
- {
- SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype)
- - TYPE_LENGTH (SYMBOL_TYPE (sym));
- }
- break;
-
-#else /* no BELIEVE_PCC_PROMOTION_TYPE. */
-
- /* If PCC says a parameter is a short or a char,
- it is really an int. */
- temptype = lookup_fundamental_type (objfile, FT_INTEGER);
- if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype)
- && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
- {
- SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym))
- ? lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER)
- : temptype;
- }
- break;
-
-#endif /* no BELIEVE_PCC_PROMOTION_TYPE. */
-
- case 'P':
- SYMBOL_CLASS (sym) = LOC_REGPARM;
- SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'r':
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'S':
- /* Static symbol at top level of file */
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &file_symbols);
- break;
-
- case 't':
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
- TYPE_NAME (SYMBOL_TYPE (sym)) =
- obsavestring (SYMBOL_NAME (sym),
- strlen (SYMBOL_NAME (sym)),
- &objfile -> symbol_obstack);
- /* C++ vagaries: we may have a type which is derived from
- a base type which did not have its name defined when the
- derived class was output. We fill in the derived class's
- base part member's name here in that case. */
- else if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
- || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)
- && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
- {
- int j;
- for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
- if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
- TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
- type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
- }
-
- add_symbol_to_list (sym, &file_symbols);
- break;
-
- case 'T':
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
- if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
- TYPE_NAME (SYMBOL_TYPE (sym))
- = obconcat (&objfile -> type_obstack, "",
- (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM
- ? "enum "
- : (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
- ? "struct " : "union ")),
- SYMBOL_NAME (sym));
- add_symbol_to_list (sym, &file_symbols);
-
- if (synonym)
- {
- register struct symbol *typedef_sym = (struct symbol *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct symbol));
- SYMBOL_NAME (typedef_sym) = SYMBOL_NAME (sym);
- SYMBOL_TYPE (typedef_sym) = SYMBOL_TYPE (sym);
-
- SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
- SYMBOL_VALUE (typedef_sym) = valu;
- SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
- add_symbol_to_list (typedef_sym, &file_symbols);
- }
- break;
-
- case 'V':
- /* Static symbol of local scope */
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'v':
- /* Reference parameter */
- SYMBOL_CLASS (sym) = LOC_REF_ARG;
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- case 'X':
- /* This is used by Sun FORTRAN for "function result value".
- Sun claims ("dbx and dbxtool interfaces", 2nd ed)
- that Pascal uses it too, but when I tried it Pascal used
- "x:3" (local symbol) instead. */
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- SYMBOL_VALUE (sym) = valu;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, &local_symbols);
- break;
-
- default:
- error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum);
- }
- return sym;
-}
-\f
-/* What about types defined as forward references inside of a small lexical
- scope? */
-/* Add a type to the list of undefined types to be checked through
- once this file has been read in. */
-void
-add_undefined_type (type)
- struct type *type;
-{
- if (undef_types_length == undef_types_allocated)
- {
- undef_types_allocated *= 2;
- undef_types = (struct type **)
- xrealloc ((char *) undef_types,
- undef_types_allocated * sizeof (struct type *));
- }
- undef_types[undef_types_length++] = type;
-}
-
-/* Go through each undefined type, see if it's still undefined, and fix it
- up if possible. We have two kinds of undefined types:
-
- TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
- Fix: update array length using the element bounds
- and the target type's length.
- TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
- yet defined at the time a pointer to it was made.
- Fix: Do a full lookup on the struct/union tag. */
-static void
-cleanup_undefined_types ()
-{
- struct type **type;
-
- for (type = undef_types; type < undef_types + undef_types_length; type++) {
- switch (TYPE_CODE (*type)) {
-
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- case TYPE_CODE_ENUM:
- {
- /* Reasonable test to see if it's been defined since. */
- if (TYPE_NFIELDS (*type) == 0)
- {
- struct pending *ppt;
- int i;
- /* Name of the type, without "struct" or "union" */
- char *typename = TYPE_NAME (*type);
-
- if (!strncmp (typename, "struct ", 7))
- typename += 7;
- if (!strncmp (typename, "union ", 6))
- typename += 6;
- if (!strncmp (typename, "enum ", 5))
- typename += 5;
-
- for (ppt = file_symbols; ppt; ppt = ppt->next)
- for (i = 0; i < ppt->nsyms; i++)
- {
- struct symbol *sym = ppt->symbol[i];
-
- if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
- && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
- && (TYPE_CODE (SYMBOL_TYPE (sym)) ==
- TYPE_CODE (*type))
- && !strcmp (SYMBOL_NAME (sym), typename))
- memcpy (*type, SYMBOL_TYPE (sym), sizeof (struct type));
- }
- }
- else
- /* It has been defined; don't mark it as a stub. */
- TYPE_FLAGS (*type) &= ~TYPE_FLAG_STUB;
- }
- break;
-
- case TYPE_CODE_ARRAY:
- {
- struct type *range_type;
- int lower, upper;
-
- if (TYPE_LENGTH (*type) != 0) /* Better be unknown */
- goto badtype;
- if (TYPE_NFIELDS (*type) != 1)
- goto badtype;
- range_type = TYPE_FIELD_TYPE (*type, 0);
- if (TYPE_CODE (range_type) != TYPE_CODE_RANGE)
- goto badtype;
-
- /* Now recompute the length of the array type, based on its
- number of elements and the target type's length. */
- lower = TYPE_FIELD_BITPOS (range_type, 0);
- upper = TYPE_FIELD_BITPOS (range_type, 1);
- TYPE_LENGTH (*type) = (upper - lower + 1)
- * TYPE_LENGTH (TYPE_TARGET_TYPE (*type));
- }
- break;
-
- default:
- badtype:
- error ("GDB internal error. cleanup_undefined_types with bad\
- type %d.", TYPE_CODE (*type));
- break;
- }
- }
- undef_types_length = 0;
-}
-\f
-/* Skip rest of this symbol and return an error type.
-
- General notes on error recovery: error_type always skips to the
- end of the symbol (modulo cretinous dbx symbol name continuation).
- Thus code like this:
-
- if (*(*pp)++ != ';')
- return error_type (pp);
-
- is wrong because if *pp starts out pointing at '\0' (typically as the
- result of an earlier error), it will be incremented to point to the
- start of the next symbol, which might produce strange results, at least
- if you run off the end of the string table. Instead use
-
- if (**pp != ';')
- return error_type (pp);
- ++*pp;
-
- or
-
- if (**pp != ';')
- foo = error_type (pp);
- else
- ++*pp;
-
- And in case it isn't obvious, the point of all this hair is so the compiler
- can define new types and new syntaxes, and old versions of the
- debugger will be able to read the new symbol tables. */
-
-struct type *
-error_type (pp)
- char **pp;
-{
- complain (&error_type_complaint, 0);
- while (1)
- {
- /* Skip to end of symbol. */
- while (**pp != '\0')
- (*pp)++;
-
- /* Check for and handle cretinous dbx symbol name continuation! */
- if ((*pp)[-1] == '\\')
- *pp = next_symbol_text ();
- else
- break;
- }
- return builtin_type_error;
-}
-\f
-/* Read a dbx type reference or definition;
- return the type that is meant.
- This can be just a number, in which case it references
- a type already defined and placed in type_vector.
- Or the number can be followed by an =, in which case
- it means to define a new type according to the text that
- follows the =. */
-
-struct type *
-read_type (pp, objfile)
- register char **pp;
- struct objfile *objfile;
-{
- register struct type *type = 0;
- struct type *type1;
- int typenums[2];
- int xtypenums[2];
-
- /* Read type number if present. The type number may be omitted.
- for instance in a two-dimensional array declared with type
- "ar1;1;10;ar1;1;10;4". */
- if ((**pp >= '0' && **pp <= '9')
- || **pp == '(')
- {
- read_type_number (pp, typenums);
-
- /* Type is not being defined here. Either it already exists,
- or this is a forward reference to it. dbx_alloc_type handles
- both cases. */
- if (**pp != '=')
- return dbx_alloc_type (typenums, objfile);
-
- /* Type is being defined here. */
-#if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */
- {
- struct type *tt;
-
- /* if such a type already exists, this is an unnecessary duplication
- of the stab string, which is common in (RS/6000) xlc generated
- objects. In that case, simply return NULL and let the caller take
- care of it. */
-
- tt = *dbx_lookup_type (typenums);
- if (tt && tt->length && tt->code)
- return NULL;
- }
-#endif
-
- *pp += 2;
- }
- else
- {
- /* 'typenums=' not present, type is anonymous. Read and return
- the definition, but don't put it in the type vector. */
- typenums[0] = typenums[1] = -1;
- *pp += 1;
- }
-
- switch ((*pp)[-1])
- {
- case 'x':
- {
- enum type_code code;
-
- /* Used to index through file_symbols. */
- struct pending *ppt;
- int i;
-
- /* Name including "struct", etc. */
- char *type_name;
-
- /* Name without "struct", etc. */
- char *type_name_only;
-
- {
- char *prefix;
- char *from, *to;
-
- /* Set the type code according to the following letter. */
- switch ((*pp)[0])
- {
- case 's':
- code = TYPE_CODE_STRUCT;
- prefix = "struct ";
- break;
- case 'u':
- code = TYPE_CODE_UNION;
- prefix = "union ";
- break;
- case 'e':
- code = TYPE_CODE_ENUM;
- prefix = "enum ";
- break;
- default:
- return error_type (pp);
- }
-
- to = type_name = (char *)
- obstack_alloc (&objfile -> type_obstack,
- (strlen (prefix) +
- ((char *) strchr (*pp, ':') - (*pp)) + 1));
-
- /* Copy the prefix. */
- from = prefix;
- while (*to++ = *from++)
- ;
- to--;
-
- type_name_only = to;
-
- /* Copy the name. */
- from = *pp + 1;
- while ((*to++ = *from++) != ':')
- ;
- *--to = '\0';
-
- /* Set the pointer ahead of the name which we just read. */
- *pp = from;
-
-#if 0
- /* The following hack is clearly wrong, because it doesn't
- check whether we are in a baseclass. I tried to reproduce
- the case that it is trying to fix, but I couldn't get
- g++ to put out a cross reference to a basetype. Perhaps
- it doesn't do it anymore. */
- /* Note: for C++, the cross reference may be to a base type which
- has not yet been seen. In this case, we skip to the comma,
- which will mark the end of the base class name. (The ':'
- at the end of the base class name will be skipped as well.)
- But sometimes (ie. when the cross ref is the last thing on
- the line) there will be no ','. */
- from = (char *) strchr (*pp, ',');
- if (from)
- *pp = from;
-#endif /* 0 */
- }
-
- /* Now check to see whether the type has already been declared. */
- /* This is necessary at least in the case where the
- program says something like
- struct foo bar[5];
- The compiler puts out a cross-reference; we better find
- set the length of the structure correctly so we can
- set the length of the array. */
- for (ppt = file_symbols; ppt; ppt = ppt->next)
- for (i = 0; i < ppt->nsyms; i++)
- {
- struct symbol *sym = ppt->symbol[i];
-
- if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
- && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
- && (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
- && !strcmp (SYMBOL_NAME (sym), type_name_only))
- {
- obstack_free (&objfile -> type_obstack, type_name);
- type = SYMBOL_TYPE (sym);
- return type;
- }
- }
-
- /* Didn't find the type to which this refers, so we must
- be dealing with a forward reference. Allocate a type
- structure for it, and keep track of it so we can
- fill in the rest of the fields when we get the full
- type. */
- type = dbx_alloc_type (typenums, objfile);
- TYPE_CODE (type) = code;
- TYPE_NAME (type) = type_name;
- INIT_CPLUS_SPECIFIC(type);
- TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
-
- add_undefined_type (type);
- return type;
- }
-
- case '-': /* RS/6000 built-in type */
- (*pp)--;
- type = builtin_type (pp); /* (in xcoffread.c) */
- goto after_digits;
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- case '(':
- (*pp)--;
- read_type_number (pp, xtypenums);
- type = *dbx_lookup_type (xtypenums);
- /* fall through */
-
- after_digits:
- if (type == 0)
- type = lookup_fundamental_type (objfile, FT_VOID);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- break;
-
- case '*':
- type1 = read_type (pp, objfile);
-/* FIXME -- we should be doing smash_to_XXX types here. */
-#if 0
- /* postponed type decoration should be allowed. */
- if (typenums[1] > 0 && typenums[1] < type_vector_length &&
- (type = type_vector[typenums[1]])) {
- smash_to_pointer_type (type, type1);
- break;
- }
-#endif
- type = lookup_pointer_type (type1);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- break;
-
- case '@':
- {
- struct type *domain = read_type (pp, objfile);
- struct type *memtype;
-
- if (**pp != ',')
- /* Invalid member type data format. */
- return error_type (pp);
- ++*pp;
-
- memtype = read_type (pp, objfile);
- type = dbx_alloc_type (typenums, objfile);
- smash_to_member_type (type, domain, memtype);
- }
- break;
-
- case '#':
- if ((*pp)[0] == '#')
- {
- /* We'll get the parameter types from the name. */
- struct type *return_type;
-
- *pp += 1;
- return_type = read_type (pp, objfile);
- if (*(*pp)++ != ';')
- complain (&invalid_member_complaint, (char *) symnum);
- type = allocate_stub_method (return_type);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- }
- else
- {
- struct type *domain = read_type (pp, objfile);
- struct type *return_type;
- struct type **args;
-
- if (*(*pp)++ != ',')
- error ("invalid member type data format, at symtab pos %d.",
- symnum);
-
- return_type = read_type (pp, objfile);
- args = read_args (pp, ';', objfile);
- type = dbx_alloc_type (typenums, objfile);
- smash_to_method_type (type, domain, return_type, args);
- }
- break;
-
- case '&':
- type1 = read_type (pp, objfile);
- type = lookup_reference_type (type1);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- break;
-
- case 'f':
- type1 = read_type (pp, objfile);
- type = lookup_function_type (type1);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- break;
-
- case 'r':
- type = read_range_type (pp, typenums, objfile);
- if (typenums[0] != -1)
- *dbx_lookup_type (typenums) = type;
- break;
-
- case 'e':
- type = dbx_alloc_type (typenums, objfile);
- type = read_enum_type (pp, type, objfile);
- *dbx_lookup_type (typenums) = type;
- break;
-
- case 's':
- type = dbx_alloc_type (typenums, objfile);
- if (!TYPE_NAME (type))
- TYPE_NAME (type) = type_synonym_name;
- type_synonym_name = 0;
- type = read_struct_type (pp, type, objfile);
- break;
-
- case 'u':
- type = dbx_alloc_type (typenums, objfile);
- if (!TYPE_NAME (type))
- TYPE_NAME (type) = type_synonym_name;
- type_synonym_name = 0;
- type = read_struct_type (pp, type, objfile);
- TYPE_CODE (type) = TYPE_CODE_UNION;
- break;
-
- case 'a':
- if (**pp != 'r')
- return error_type (pp);
- ++*pp;
-
- type = dbx_alloc_type (typenums, objfile);
- type = read_array_type (pp, type, objfile);
- break;
-
- default:
- --*pp; /* Go back to the symbol in error */
- /* Particularly important if it was \0! */
- return error_type (pp);
- }
-
- if (type == 0)
- abort ();
-
-#if 0
- /* If this is an overriding temporary alteration for a header file's
- contents, and this type number is unknown in the global definition,
- put this type into the global definition at this type number. */
- if (header_file_prev_index >= 0)
- {
- register struct type **tp
- = explicit_lookup_type (header_file_prev_index, typenums[1]);
- if (*tp == 0)
- *tp = type;
- }
-#endif
- return type;
-}
-\f
-/* This page contains subroutines of read_type. */
-
-/* Read the description of a structure (or union type)
- and return an object describing the type. */
-
-static struct type *
-read_struct_type (pp, type, objfile)
- char **pp;
- register struct type *type;
- struct objfile *objfile;
-{
- /* Total number of methods defined in this class.
- If the class defines two `f' methods, and one `g' method,
- then this will have the value 3. */
- int total_length = 0;
-
- struct nextfield
- {
- struct nextfield *next;
- int visibility; /* 0=public, 1=protected, 2=public */
- struct field field;
- };
-
- struct next_fnfield
- {
- struct next_fnfield *next;
- struct fn_field fn_field;
- };
-
- struct next_fnfieldlist
- {
- struct next_fnfieldlist *next;
- struct fn_fieldlist fn_fieldlist;
- };
-
- register struct nextfield *list = 0;
- struct nextfield *new;
- register char *p;
- int nfields = 0;
- int non_public_fields = 0;
- register int n;
-
- register struct next_fnfieldlist *mainlist = 0;
- int nfn_fields = 0;
-
- TYPE_CODE (type) = TYPE_CODE_STRUCT;
- INIT_CPLUS_SPECIFIC(type);
-
- /* First comes the total size in bytes. */
-
- TYPE_LENGTH (type) = read_number (pp, 0);
-
- /* C++: Now, if the class is a derived class, then the next character
- will be a '!', followed by the number of base classes derived from.
- Each element in the list contains visibility information,
- the offset of this base class in the derived structure,
- and then the base type. */
- if (**pp == '!')
- {
- int i, n_baseclasses, offset;
- struct type *baseclass;
- int via_public;
-
- /* Nonzero if it is a virtual baseclass, i.e.,
-
- struct A{};
- struct B{};
- struct C : public B, public virtual A {};
-
- B is a baseclass of C; A is a virtual baseclass for C. This is a C++
- 2.0 language feature. */
- int via_virtual;
-
- *pp += 1;
-
- ALLOCATE_CPLUS_STRUCT_TYPE(type);
-
- n_baseclasses = read_number (pp, ',');
- TYPE_FIELD_VIRTUAL_BITS (type) =
- (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
- B_BYTES (n_baseclasses));
- B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), n_baseclasses);
-
- for (i = 0; i < n_baseclasses; i++)
- {
- if (**pp == '\\')
- *pp = next_symbol_text ();
-
- switch (**pp)
- {
- case '0':
- via_virtual = 0;
- break;
- case '1':
- via_virtual = 1;
- break;
- default:
- /* Bad visibility format. */
- return error_type (pp);
- }
- ++*pp;
-
- switch (**pp)
- {
- case '0':
- via_public = 0;
- non_public_fields++;
- break;
- case '2':
- via_public = 2;
- break;
- default:
- /* Bad visibility format. */
- return error_type (pp);
- }
- if (via_virtual)
- SET_TYPE_FIELD_VIRTUAL (type, i);
- ++*pp;
-
- /* Offset of the portion of the object corresponding to
- this baseclass. Always zero in the absence of
- multiple inheritance. */
- offset = read_number (pp, ',');
- baseclass = read_type (pp, objfile);
- *pp += 1; /* skip trailing ';' */
-
- /* Make this baseclass visible for structure-printing purposes. */
- new = (struct nextfield *) alloca (sizeof (struct nextfield));
- new->next = list;
- list = new;
- list->visibility = via_public;
- list->field.type = baseclass;
- list->field.name = type_name_no_tag (baseclass);
- list->field.bitpos = offset;
- list->field.bitsize = 0; /* this should be an unpacked field! */
- nfields++;
- }
- TYPE_N_BASECLASSES (type) = n_baseclasses;
- }
-
- /* Now come the fields, as NAME:?TYPENUM,BITPOS,BITSIZE; for each one.
- At the end, we see a semicolon instead of a field.
-
- In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
- a static field.
-
- The `?' is a placeholder for one of '/2' (public visibility),
- '/1' (protected visibility), '/0' (private visibility), or nothing
- (C style symbol table, public visibility). */
-
- /* We better set p right now, in case there are no fields at all... */
- p = *pp;
-
- while (**pp != ';')
- {
- /* Check for and handle cretinous dbx symbol name continuation! */
- if (**pp == '\\') *pp = next_symbol_text ();
-
- /* Get space to record the next field's data. */
- new = (struct nextfield *) alloca (sizeof (struct nextfield));
- new->next = list;
- list = new;
-
- /* Get the field name. */
- p = *pp;
- if (*p == CPLUS_MARKER)
- {
- /* Special GNU C++ name. */
- if (*++p == 'v')
- {
- const char *prefix;
- char *name = 0;
- struct type *context;
-
- switch (*++p)
- {
- case 'f':
- prefix = vptr_name;
- break;
- case 'b':
- prefix = vb_name;
- break;
- default:
- complain (&invalid_cpp_abbrev_complaint, *pp);
- prefix = "INVALID_C++_ABBREV";
- break;
- }
- *pp = p + 1;
- context = read_type (pp, objfile);
- name = type_name_no_tag (context);
- if (name == 0)
- {
- complain (&invalid_cpp_type_complaint, (char *) symnum);
- TYPE_NAME (context) = name;
- }
- list->field.name = obconcat (&objfile -> type_obstack,
- prefix, name, "");
- p = ++(*pp);
- if (p[-1] != ':')
- complain (&invalid_cpp_abbrev_complaint, *pp);
- list->field.type = read_type (pp, objfile);
- (*pp)++; /* Skip the comma. */
- list->field.bitpos = read_number (pp, ';');
- /* This field is unpacked. */
- list->field.bitsize = 0;
- list->visibility = 0; /* private */
- non_public_fields++;
- }
- /* GNU C++ anonymous type. */
- else if (*p == '_')
- break;
- else
- complain (&invalid_cpp_abbrev_complaint, *pp);
-
- nfields++;
- continue;
- }
-
- while (*p != ':') p++;
- list->field.name = obsavestring (*pp, p - *pp,
- &objfile -> type_obstack);
-
- /* C++: Check to see if we have hit the methods yet. */
- if (p[1] == ':')
- break;
-
- *pp = p + 1;
-
- /* This means we have a visibility for a field coming. */
- if (**pp == '/')
- {
- switch (*++*pp)
- {
- case '0':
- list->visibility = 0; /* private */
- non_public_fields++;
- *pp += 1;
- break;
-
- case '1':
- list->visibility = 1; /* protected */
- non_public_fields++;
- *pp += 1;
- break;
-
- case '2':
- list->visibility = 2; /* public */
- *pp += 1;
- break;
- }
- }
- else /* normal dbx-style format. */
- list->visibility = 2; /* public */
-
- list->field.type = read_type (pp, objfile);
- if (**pp == ':')
- {
- /* Static class member. */
- list->field.bitpos = (long)-1;
- p = ++(*pp);
- while (*p != ';') p++;
- list->field.bitsize = (long) savestring (*pp, p - *pp);
- *pp = p + 1;
- nfields++;
- continue;
- }
- else if (**pp != ',')
- /* Bad structure-type format. */
- return error_type (pp);
-
- (*pp)++; /* Skip the comma. */
- list->field.bitpos = read_number (pp, ',');
- list->field.bitsize = read_number (pp, ';');
-
-#if 0
- /* FIXME-tiemann: Can't the compiler put out something which
- lets us distinguish these? (or maybe just not put out anything
- for the field). What is the story here? What does the compiler
- really do? Also, patch gdb.texinfo for this case; I document
- it as a possible problem there. Search for "DBX-style". */
-
- /* This is wrong because this is identical to the symbols
- produced for GCC 0-size arrays. For example:
- typedef union {
- int num;
- char str[0];
- } foo;
- The code which dumped core in such circumstances should be
- fixed not to dump core. */
-
- /* g++ -g0 can put out bitpos & bitsize zero for a static
- field. This does not give us any way of getting its
- class, so we can't know its name. But we can just
- ignore the field so we don't dump core and other nasty
- stuff. */
- if (list->field.bitpos == 0
- && list->field.bitsize == 0)
- {
- complain (&dbx_class_complaint, 0);
- /* Ignore this field. */
- list = list->next;
- }
- else
-#endif /* 0 */
- {
- /* Detect an unpacked field and mark it as such.
- dbx gives a bit size for all fields.
- Note that forward refs cannot be packed,
- and treat enums as if they had the width of ints. */
- if (TYPE_CODE (list->field.type) != TYPE_CODE_INT
- && TYPE_CODE (list->field.type) != TYPE_CODE_ENUM)
- list->field.bitsize = 0;
- if ((list->field.bitsize == 8 * TYPE_LENGTH (list->field.type)
- || (TYPE_CODE (list->field.type) == TYPE_CODE_ENUM
- && (list->field.bitsize
- == 8 * TYPE_LENGTH (lookup_fundamental_type (objfile, FT_INTEGER)))
- )
- )
- &&
- list->field.bitpos % 8 == 0)
- list->field.bitsize = 0;
- nfields++;
- }
- }
-
- if (p[1] == ':')
- /* chill the list of fields: the last entry (at the head)
- is a partially constructed entry which we now scrub. */
- list = list->next;
-
- /* Now create the vector of fields, and record how big it is.
- We need this info to record proper virtual function table information
- for this class's virtual functions. */
-
- TYPE_NFIELDS (type) = nfields;
- TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (&objfile -> type_obstack, sizeof (struct field) * nfields);
-
- if (non_public_fields)
- {
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
-
- TYPE_FIELD_PRIVATE_BITS (type) =
- (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
- B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
-
- TYPE_FIELD_PROTECTED_BITS (type) =
- (B_TYPE *) obstack_alloc (&objfile -> type_obstack,
- B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
- }
-
- /* Copy the saved-up fields into the field vector. */
-
- for (n = nfields; list; list = list->next)
- {
- n -= 1;
- TYPE_FIELD (type, n) = list->field;
- if (list->visibility == 0)
- SET_TYPE_FIELD_PRIVATE (type, n);
- else if (list->visibility == 1)
- SET_TYPE_FIELD_PROTECTED (type, n);
- }
-
- /* Now come the method fields, as NAME::methods
- where each method is of the form TYPENUM,ARGS,...:PHYSNAME;
- At the end, we see a semicolon instead of a field.
-
- For the case of overloaded operators, the format is
- op$::*.methods, where $ is the CPLUS_MARKER (usually '$'),
- `*' holds the place for an operator name (such as `+=')
- and `.' marks the end of the operator name. */
- if (p[1] == ':')
- {
- /* Now, read in the methods. To simplify matters, we
- "unread" the name that has been read, so that we can
- start from the top. */
-
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
- /* For each list of method lists... */
- do
- {
- int i;
- struct next_fnfield *sublist = 0;
- struct type *look_ahead_type = NULL;
- int length = 0;
- struct next_fnfieldlist *new_mainlist =
- (struct next_fnfieldlist *)alloca (sizeof (struct next_fnfieldlist));
- char *main_fn_name;
-
- p = *pp;
-
- /* read in the name. */
- while (*p != ':') p++;
- if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER)
- {
- /* This is a completely wierd case. In order to stuff in the
- names that might contain colons (the usual name delimiter),
- Mike Tiemann defined a different name format which is
- signalled if the identifier is "op$". In that case, the
- format is "op$::XXXX." where XXXX is the name. This is
- used for names like "+" or "=". YUUUUUUUK! FIXME! */
- /* This lets the user type "break operator+".
- We could just put in "+" as the name, but that wouldn't
- work for "*". */
- static char opname[32] = {'o', 'p', CPLUS_MARKER};
- char *o = opname + 3;
-
- /* Skip past '::'. */
- *pp = p + 2;
- if (**pp == '\\') *pp = next_symbol_text ();
- p = *pp;
- while (*p != '.')
- *o++ = *p++;
- main_fn_name = savestring (opname, o - opname);
- /* Skip past '.' */
- *pp = p + 1;
- }
- else
- {
- main_fn_name = savestring (*pp, p - *pp);
- /* Skip past '::'. */
- *pp = p + 2;
- }
- new_mainlist->fn_fieldlist.name = main_fn_name;
-
- do
- {
- struct next_fnfield *new_sublist =
- (struct next_fnfield *)alloca (sizeof (struct next_fnfield));
-
- /* Check for and handle cretinous dbx symbol name continuation! */
- if (look_ahead_type == NULL) /* Normal case. */
- {
- if (**pp == '\\') *pp = next_symbol_text ();
-
- new_sublist->fn_field.type = read_type (pp, objfile);
- if (**pp != ':')
- /* Invalid symtab info for method. */
- return error_type (pp);
- }
- else
- { /* g++ version 1 kludge */
- new_sublist->fn_field.type = look_ahead_type;
- look_ahead_type = NULL;
- }
-
- *pp += 1;
- p = *pp;
- while (*p != ';') p++;
-
- /* If this is just a stub, then we don't have the
- real name here. */
- if (TYPE_FLAGS (new_sublist->fn_field.type) & TYPE_FLAG_STUB)
- new_sublist->fn_field.is_stub = 1;
- new_sublist->fn_field.physname = savestring (*pp, p - *pp);
- *pp = p + 1;
-
- /* Set this method's visibility fields. */
- switch (*(*pp)++ - '0')
- {
- case 0:
- new_sublist->fn_field.is_private = 1;
- break;
- case 1:
- new_sublist->fn_field.is_protected = 1;
- break;
- }
-
- if (**pp == '\\') *pp = next_symbol_text ();
- switch (**pp)
- {
- case 'A': /* Normal functions. */
- new_sublist->fn_field.is_const = 0;
- new_sublist->fn_field.is_volatile = 0;
- (*pp)++;
- break;
- case 'B': /* `const' member functions. */
- new_sublist->fn_field.is_const = 1;
- new_sublist->fn_field.is_volatile = 0;
- (*pp)++;
- break;
- case 'C': /* `volatile' member function. */
- new_sublist->fn_field.is_const = 0;
- new_sublist->fn_field.is_volatile = 1;
- (*pp)++;
- break;
- case 'D': /* `const volatile' member function. */
- new_sublist->fn_field.is_const = 1;
- new_sublist->fn_field.is_volatile = 1;
- (*pp)++;
- break;
- case '*': /* File compiled with g++ version 1 -- no info */
- case '?':
- case '.':
- break;
- default:
- complain (&const_vol_complaint, (char *) (long) **pp);
- break;
- }
-
- switch (*(*pp)++)
- {
- case '*':
- /* virtual member function, followed by index. */
- /* The sign bit is set to distinguish pointers-to-methods
- from virtual function indicies. Since the array is
- in words, the quantity must be shifted left by 1
- on 16 bit machine, and by 2 on 32 bit machine, forcing
- the sign bit out, and usable as a valid index into
- the array. Remove the sign bit here. */
- new_sublist->fn_field.voffset =
- (0x7fffffff & read_number (pp, ';')) + 2;
-
- if (**pp == '\\') *pp = next_symbol_text ();
-
- if (**pp == ';' || **pp == '\0')
- /* Must be g++ version 1. */
- new_sublist->fn_field.fcontext = 0;
- else
- {
- /* Figure out from whence this virtual function came.
- It may belong to virtual function table of
- one of its baseclasses. */
- look_ahead_type = read_type (pp, objfile);
- if (**pp == ':')
- { /* g++ version 1 overloaded methods. */ }
- else
- {
- new_sublist->fn_field.fcontext = look_ahead_type;
- if (**pp != ';')
- return error_type (pp);
- else
- ++*pp;
- look_ahead_type = NULL;
- }
- }
- break;
-
- case '?':
- /* static member function. */
- new_sublist->fn_field.voffset = VOFFSET_STATIC;
- if (strncmp (new_sublist->fn_field.physname,
- main_fn_name, strlen (main_fn_name)))
- new_sublist->fn_field.is_stub = 1;
- break;
-
- default:
- /* error */
- complain (&member_fn_complaint, (char *) (long) (*pp)[-1]);
- /* Fall through into normal member function. */
-
- case '.':
- /* normal member function. */
- new_sublist->fn_field.voffset = 0;
- new_sublist->fn_field.fcontext = 0;
- break;
- }
-
- new_sublist->next = sublist;
- sublist = new_sublist;
- length++;
- if (**pp == '\\') *pp = next_symbol_text ();
- }
- while (**pp != ';' && **pp != '\0');
-
- *pp += 1;
-
- new_mainlist->fn_fieldlist.fn_fields =
- (struct fn_field *) obstack_alloc (&objfile -> type_obstack,
- sizeof (struct fn_field) * length);
- for (i = length; (i--, sublist); sublist = sublist->next)
- new_mainlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
-
- new_mainlist->fn_fieldlist.length = length;
- new_mainlist->next = mainlist;
- mainlist = new_mainlist;
- nfn_fields++;
- total_length += length;
- }
- while (**pp != ';');
- }
-
- *pp += 1;
-
-
- if (nfn_fields)
- {
- TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct fn_fieldlist) * nfn_fields);
- TYPE_NFN_FIELDS (type) = nfn_fields;
- TYPE_NFN_FIELDS_TOTAL (type) = total_length;
- }
-
- {
- int i;
- for (i = 0; i < TYPE_N_BASECLASSES (type); ++i)
- TYPE_NFN_FIELDS_TOTAL (type) +=
- TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, i));
- }
-
- for (n = nfn_fields; mainlist; mainlist = mainlist->next) {
- --n; /* Circumvent Sun3 compiler bug */
- TYPE_FN_FIELDLISTS (type)[n] = mainlist->fn_fieldlist;
- }
-
- if (**pp == '~')
- {
- *pp += 1;
-
- if (**pp == '=' || **pp == '+' || **pp == '-')
- {
- /* Obsolete flags that used to indicate the presence
- of constructors and/or destructors. */
- *pp += 1;
- }
-
- /* Read either a '%' or the final ';'. */
- if (*(*pp)++ == '%')
- {
- /* We'd like to be able to derive the vtable pointer field
- from the type information, but when it's inherited, that's
- hard. A reason it's hard is because we may read in the
- info about a derived class before we read in info about
- the base class that provides the vtable pointer field.
- Once the base info has been read, we could fill in the info
- for the derived classes, but for the fact that by then,
- we don't remember who needs what. */
-
- int predicted_fieldno = -1;
-
- /* Now we must record the virtual function table pointer's
- field information. */
-
- struct type *t;
- int i;
-
-
-#if 0
- {
- /* In version 2, we derive the vfield ourselves. */
- for (n = 0; n < nfields; n++)
- {
- if (! strncmp (TYPE_FIELD_NAME (type, n), vptr_name,
- sizeof (vptr_name) -1))
- {
- predicted_fieldno = n;
- break;
- }
- }
- if (predicted_fieldno < 0)
- for (n = 0; n < TYPE_N_BASECLASSES (type); n++)
- if (! TYPE_FIELD_VIRTUAL (type, n)
- && TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n)) >= 0)
- {
- predicted_fieldno = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n));
- break;
- }
- }
-#endif
-
- t = read_type (pp, objfile);
- p = (*pp)++;
- while (*p != '\0' && *p != ';')
- p++;
- if (*p == '\0')
- /* Premature end of symbol. */
- return error_type (pp);
-
- TYPE_VPTR_BASETYPE (type) = t;
- if (type == t)
- {
- if (TYPE_FIELD_NAME (t, TYPE_N_BASECLASSES (t)) == 0)
- {
- /* FIXME-tiemann: what's this? */
-#if 0
- TYPE_VPTR_FIELDNO (type) = i = TYPE_N_BASECLASSES (t);
-#else
- error_type (pp);
-#endif
- }
- else for (i = TYPE_NFIELDS (t) - 1; i >= TYPE_N_BASECLASSES (t); --i)
- if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name,
- sizeof (vptr_name) -1))
- {
- TYPE_VPTR_FIELDNO (type) = i;
- break;
- }
- if (i < 0)
- /* Virtual function table field not found. */
- return error_type (pp);
- }
- else
- TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
-
-#if 0
- if (TYPE_VPTR_FIELDNO (type) != predicted_fieldno)
- error ("TYPE_VPTR_FIELDNO miscalculated");
-#endif
-
- *pp = p + 1;
- }
- }
-
- return type;
-}
-
-/* Read a definition of an array type,
- and create and return a suitable type object.
- Also creates a range type which represents the bounds of that
- array. */
-static struct type *
-read_array_type (pp, type, objfile)
- register char **pp;
- register struct type *type;
- struct objfile *objfile;
-{
- struct type *index_type, *element_type, *range_type;
- int lower, upper;
- int adjustable = 0;
-
- /* Format of an array type:
- "ar<index type>;lower;upper;<array_contents_type>". Put code in
- to handle this.
-
- Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
- for these, produce a type like float[][]. */
-
- index_type = read_type (pp, objfile);
- if (**pp != ';')
- /* Improper format of array type decl. */
- return error_type (pp);
- ++*pp;
-
- if (!(**pp >= '0' && **pp <= '9'))
- {
- *pp += 1;
- adjustable = 1;
- }
- lower = read_number (pp, ';');
-
- if (!(**pp >= '0' && **pp <= '9'))
- {
- *pp += 1;
- adjustable = 1;
- }
- upper = read_number (pp, ';');
-
- element_type = read_type (pp, objfile);
-
- if (adjustable)
- {
- lower = 0;
- upper = -1;
- }
-
- {
- /* Create range type. */
- range_type = (struct type *)
- obstack_alloc (&objfile -> type_obstack, sizeof (struct type));
- bzero (range_type, sizeof (struct type));
- TYPE_OBJFILE (range_type) = objfile;
- TYPE_CODE (range_type) = TYPE_CODE_RANGE;
- TYPE_TARGET_TYPE (range_type) = index_type;
-
- /* This should never be needed. */
- TYPE_LENGTH (range_type) = sizeof (int);
-
- TYPE_NFIELDS (range_type) = 2;
- TYPE_FIELDS (range_type) =
- (struct field *) obstack_alloc (&objfile -> type_obstack,
- 2 * sizeof (struct field));
- TYPE_FIELD_BITPOS (range_type, 0) = lower;
- TYPE_FIELD_BITPOS (range_type, 1) = upper;
- }
-
- TYPE_CODE (type) = TYPE_CODE_ARRAY;
- TYPE_TARGET_TYPE (type) = element_type;
- TYPE_LENGTH (type) = (upper - lower + 1) * TYPE_LENGTH (element_type);
- TYPE_NFIELDS (type) = 1;
- TYPE_FIELDS (type) =
- (struct field *) obstack_alloc (&objfile -> type_obstack,
- sizeof (struct field));
- TYPE_FIELD_TYPE (type, 0) = range_type;
-
- /* If we have an array whose element type is not yet known, but whose
- bounds *are* known, record it to be adjusted at the end of the file. */
- if (TYPE_LENGTH (element_type) == 0 && !adjustable)
- add_undefined_type (type);
-
- return type;
-}
-
-
-/* Read a definition of an enumeration type,
- and create and return a suitable type object.
- Also defines the symbols that represent the values of the type. */
-
-static struct type *
-read_enum_type (pp, type, objfile)
- register char **pp;
- register struct type *type;
- struct objfile *objfile;
-{
- register char *p;
- char *name;
- register long n;
- register struct symbol *sym;
- int nsyms = 0;
- struct pending **symlist;
- struct pending *osyms, *syms;
- int o_nsyms;
-
- if (within_function)
- symlist = &local_symbols;
- else
- symlist = &file_symbols;
- osyms = *symlist;
- o_nsyms = osyms ? osyms->nsyms : 0;
-
- /* Read the value-names and their values.
- The input syntax is NAME:VALUE,NAME:VALUE, and so on.
- A semicolon or comma instead of a NAME means the end. */
- while (**pp && **pp != ';' && **pp != ',')
- {
- /* Check for and handle cretinous dbx symbol name continuation! */
- if (**pp == '\\') *pp = next_symbol_text ();
-
- p = *pp;
- while (*p != ':') p++;
- name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack);
- *pp = p + 1;
- n = read_number (pp, ',');
-
- sym = (struct symbol *) obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol));
- bzero (sym, sizeof (struct symbol));
- SYMBOL_NAME (sym) = name;
- SYMBOL_CLASS (sym) = LOC_CONST;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- SYMBOL_VALUE (sym) = n;
- add_symbol_to_list (sym, symlist);
- nsyms++;
- }
-
- if (**pp == ';')
- (*pp)++; /* Skip the semicolon. */
-
- /* Now fill in the fields of the type-structure. */
-
- TYPE_LENGTH (type) = sizeof (int);
- TYPE_CODE (type) = TYPE_CODE_ENUM;
- TYPE_NFIELDS (type) = nsyms;
- TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct field) * nsyms);
-
- /* Find the symbols for the values and put them into the type.
- The symbols can be found in the symlist that we put them on
- to cause them to be defined. osyms contains the old value
- of that symlist; everything up to there was defined by us. */
- /* Note that we preserve the order of the enum constants, so
- that in something like "enum {FOO, LAST_THING=FOO}" we print
- FOO, not LAST_THING. */
-
- for (syms = *symlist, n = 0; syms; syms = syms->next)
- {
- int j = 0;
- if (syms == osyms)
- j = o_nsyms;
- for (; j < syms->nsyms; j++,n++)
- {
- struct symbol *xsym = syms->symbol[j];
- SYMBOL_TYPE (xsym) = type;
- TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym);
- TYPE_FIELD_VALUE (type, n) = 0;
- TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
- TYPE_FIELD_BITSIZE (type, n) = 0;
- }
- if (syms == osyms)
- break;
- }
-
-#if 0
- /* This screws up perfectly good C programs with enums. FIXME. */
- /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */
- if(TYPE_NFIELDS(type) == 2 &&
- ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") &&
- !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) ||
- (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") &&
- !strcmp(TYPE_FIELD_NAME(type,0),"FALSE"))))
- TYPE_CODE(type) = TYPE_CODE_BOOL;
-#endif
-
- return type;
-}
-
-/* Read a number from the string pointed to by *PP.
- The value of *PP is advanced over the number.
- If END is nonzero, the character that ends the
- number must match END, or an error happens;
- and that character is skipped if it does match.
- If END is zero, *PP is left pointing to that character.
-
- If the number fits in a long, set *VALUE and set *BITS to 0.
- If not, set *BITS to be the number of bits in the number.
-
- If encounter garbage, set *BITS to -1. */
-
-static void
-read_huge_number (pp, end, valu, bits)
- char **pp;
- int end;
- long *valu;
- int *bits;
-{
- char *p = *pp;
- int sign = 1;
- long n = 0;
- int radix = 10;
- char overflow = 0;
- int nbits = 0;
- int c;
- long upper_limit;
-
- if (*p == '-')
- {
- sign = -1;
- p++;
- }
-
- /* Leading zero means octal. GCC uses this to output values larger
- than an int (because that would be hard in decimal). */
- if (*p == '0')
- {
- radix = 8;
- p++;
- }
-
- upper_limit = LONG_MAX / radix;
- while ((c = *p++) >= '0' && c <= ('0' + radix))
- {
- if (n <= upper_limit)
- {
- n *= radix;
- n += c - '0'; /* FIXME this overflows anyway */
- }
- else
- overflow = 1;
-
- /* This depends on large values being output in octal, which is
- what GCC does. */
- if (radix == 8)
- {
- if (nbits == 0)
- {
- if (c == '0')
- /* Ignore leading zeroes. */
- ;
- else if (c == '1')
- nbits = 1;
- else if (c == '2' || c == '3')
- nbits = 2;
- else
- nbits = 3;
- }
- else
- nbits += 3;
- }
- }
- if (end)
- {
- if (c && c != end)
- {
- if (bits != NULL)
- *bits = -1;
- return;
- }
- }
- else
- --p;
-
- *pp = p;
- if (overflow)
- {
- if (nbits == 0)
- {
- /* Large decimal constants are an error (because it is hard to
- count how many bits are in them). */
- if (bits != NULL)
- *bits = -1;
- return;
- }
-
- /* -0x7f is the same as 0x80. So deal with it by adding one to
- the number of bits. */
- if (sign == -1)
- ++nbits;
- if (bits)
- *bits = nbits;
- }
- else
- {
- if (valu)
- *valu = n * sign;
- if (bits)
- *bits = 0;
- }
-}
-
-#define MAX_OF_C_TYPE(t) ((1 << (sizeof (t)*8 - 1)) - 1)
-#define MIN_OF_C_TYPE(t) (-(1 << (sizeof (t)*8 - 1)))
-
-static struct type *
-read_range_type (pp, typenums, objfile)
- char **pp;
- int typenums[2];
- struct objfile *objfile;
-{
- int rangenums[2];
- long n2, n3;
- int n2bits, n3bits;
- int self_subrange;
- struct type *result_type;
-
- /* First comes a type we are a subrange of.
- In C it is usually 0, 1 or the type being defined. */
- read_type_number (pp, rangenums);
- self_subrange = (rangenums[0] == typenums[0] &&
- rangenums[1] == typenums[1]);
-
- /* A semicolon should now follow; skip it. */
- if (**pp == ';')
- (*pp)++;
-
- /* The remaining two operands are usually lower and upper bounds
- of the range. But in some special cases they mean something else. */
- read_huge_number (pp, ';', &n2, &n2bits);
- read_huge_number (pp, ';', &n3, &n3bits);
-
- if (n2bits == -1 || n3bits == -1)
- return error_type (pp);
-
- /* If limits are huge, must be large integral type. */
- if (n2bits != 0 || n3bits != 0)
- {
- char got_signed = 0;
- char got_unsigned = 0;
- /* Number of bits in the type. */
- int nbits;
-
- /* Range from 0 to <large number> is an unsigned large integral type. */
- if ((n2bits == 0 && n2 == 0) && n3bits != 0)
- {
- got_unsigned = 1;
- nbits = n3bits;
- }
- /* Range from <large number> to <large number>-1 is a large signed
- integral type. */
- else if (n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
- {
- got_signed = 1;
- nbits = n2bits;
- }
-
- /* Check for "long long". */
- if (got_signed && nbits == TARGET_LONG_LONG_BIT)
- return (lookup_fundamental_type (objfile, FT_LONG_LONG));
- if (got_unsigned && nbits == TARGET_LONG_LONG_BIT)
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG));
-
- if (got_signed || got_unsigned)
- {
- result_type = (struct type *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct type));
- bzero (result_type, sizeof (struct type));
- TYPE_OBJFILE (result_type) = objfile;
- TYPE_LENGTH (result_type) = nbits / TARGET_CHAR_BIT;
- TYPE_CODE (result_type) = TYPE_CODE_INT;
- if (got_unsigned)
- TYPE_FLAGS (result_type) |= TYPE_FLAG_UNSIGNED;
- return result_type;
- }
- else
- return error_type (pp);
- }
-
- /* A type defined as a subrange of itself, with bounds both 0, is void. */
- if (self_subrange && n2 == 0 && n3 == 0)
- return (lookup_fundamental_type (objfile, FT_VOID));
-
- /* If n3 is zero and n2 is not, we want a floating type,
- and n2 is the width in bytes.
-
- Fortran programs appear to use this for complex types also,
- and they give no way to distinguish between double and single-complex!
- We don't have complex types, so we would lose on all fortran files!
- So return type `double' for all of those. It won't work right
- for the complex values, but at least it makes the file loadable.
-
- FIXME, we may be able to distinguish these by their names. FIXME. */
-
- if (n3 == 0 && n2 > 0)
- {
- if (n2 == sizeof (float))
- return (lookup_fundamental_type (objfile, FT_FLOAT));
- return (lookup_fundamental_type (objfile, FT_DBL_PREC_FLOAT));
- }
-
- /* If the upper bound is -1, it must really be an unsigned int. */
-
- else if (n2 == 0 && n3 == -1)
- {
- /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
- long' is to look at its name! */
- if (
- long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ &&
- long_kludge_name[9] == 'l' /* long */)
- || (long_kludge_name[0] == 'l' /* long unsigned */)))
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG));
- else
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER));
- }
-
- /* Special case: char is defined (Who knows why) as a subrange of
- itself with range 0-127. */
- else if (self_subrange && n2 == 0 && n3 == 127)
- return (lookup_fundamental_type (objfile, FT_CHAR));
-
- /* Assumptions made here: Subrange of self is equivalent to subrange
- of int. FIXME: Host and target type-sizes assumed the same. */
- /* FIXME: This is the *only* place in GDB that depends on comparing
- some type to a builtin type with ==. Fix it! */
- else if (n2 == 0
- && (self_subrange ||
- *dbx_lookup_type (rangenums) == lookup_fundamental_type (objfile, FT_INTEGER)))
- {
- /* an unsigned type */
-#ifdef LONG_LONG
- if (n3 == - sizeof (long long))
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG));
-#endif
- /* FIXME -- the only way to distinguish `unsigned int' from `unsigned
- long' is to look at its name! */
- if (n3 == (unsigned long)~0L &&
- long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ &&
- long_kludge_name[9] == 'l' /* long */)
- || (long_kludge_name[0] == 'l' /* long unsigned */)))
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG));
- if (n3 == (unsigned int)~0L)
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER));
- if (n3 == (unsigned short)~0L)
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_SHORT));
- if (n3 == (unsigned char)~0L)
- return (lookup_fundamental_type (objfile, FT_UNSIGNED_CHAR));
- }
-#ifdef LONG_LONG
- else if (n3 == 0 && n2 == -sizeof (long long))
- return (lookup_fundamental_type (objfile, FT_LONG_LONG));
-#endif
- else if (n2 == -n3 -1)
- {
- /* a signed type */
- /* FIXME -- the only way to distinguish `int' from `long' is to look
- at its name! */
- if ((n3 == (1 << (8 * sizeof (long) - 1)) - 1) &&
- long_kludge_name && long_kludge_name[0] == 'l' /* long */)
- return (lookup_fundamental_type (objfile, FT_LONG));
- if (n3 == (1 << (8 * sizeof (int) - 1)) - 1)
- return (lookup_fundamental_type (objfile, FT_INTEGER));
- if (n3 == (1 << (8 * sizeof (short) - 1)) - 1)
- return (lookup_fundamental_type (objfile, FT_SHORT));
- if (n3 == (1 << (8 * sizeof (char) - 1)) - 1)
- return (lookup_fundamental_type (objfile, FT_CHAR));
- }
-
- /* We have a real range type on our hands. Allocate space and
- return a real pointer. */
-
- /* At this point I don't have the faintest idea how to deal with
- a self_subrange type; I'm going to assume that this is used
- as an idiom, and that all of them are special cases. So . . . */
- if (self_subrange)
- return error_type (pp);
-
- result_type = (struct type *)
- obstack_alloc (&objfile -> type_obstack, sizeof (struct type));
- bzero (result_type, sizeof (struct type));
- TYPE_OBJFILE (result_type) = objfile;
-
- TYPE_CODE (result_type) = TYPE_CODE_RANGE;
-
- TYPE_TARGET_TYPE (result_type) = *dbx_lookup_type(rangenums);
- if (TYPE_TARGET_TYPE (result_type) == 0) {
- complain (&range_type_base_complaint, (char *) rangenums[1]);
- TYPE_TARGET_TYPE (result_type) = lookup_fundamental_type (objfile, FT_INTEGER);
- }
-
- TYPE_NFIELDS (result_type) = 2;
- TYPE_FIELDS (result_type) =
- (struct field *) obstack_alloc (&objfile -> type_obstack,
- 2 * sizeof (struct field));
- bzero (TYPE_FIELDS (result_type), 2 * sizeof (struct field));
- TYPE_FIELD_BITPOS (result_type, 0) = n2;
- TYPE_FIELD_BITPOS (result_type, 1) = n3;
-
- TYPE_LENGTH (result_type) = TYPE_LENGTH (TYPE_TARGET_TYPE (result_type));
-
- return result_type;
-}
-
-/* Read a number from the string pointed to by *PP.
- The value of *PP is advanced over the number.
- If END is nonzero, the character that ends the
- number must match END, or an error happens;
- and that character is skipped if it does match.
- If END is zero, *PP is left pointing to that character. */
-
-long
-read_number (pp, end)
- char **pp;
- int end;
-{
- register char *p = *pp;
- register long n = 0;
- register int c;
- int sign = 1;
-
- /* Handle an optional leading minus sign. */
-
- if (*p == '-')
- {
- sign = -1;
- p++;
- }
-
- /* Read the digits, as far as they go. */
-
- while ((c = *p++) >= '0' && c <= '9')
- {
- n *= 10;
- n += c - '0';
- }
- if (end)
- {
- if (c && c != end)
- error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c, symnum);
- }
- else
- --p;
-
- *pp = p;
- return n * sign;
-}
-
-/* Read in an argument list. This is a list of types, separated by commas
- and terminated with END. Return the list of types read in, or (struct type
- **)-1 if there is an error. */
-static struct type **
-read_args (pp, end, objfile)
- char **pp;
- int end;
- struct objfile *objfile;
-{
- /* FIXME! Remove this arbitrary limit! */
- struct type *types[1024], **rval; /* allow for fns of 1023 parameters */
- int n = 0;
-
- while (**pp != end)
- {
- if (**pp != ',')
- /* Invalid argument list: no ','. */
- return (struct type **)-1;
- *pp += 1;
-
- /* Check for and handle cretinous dbx symbol name continuation! */
- if (**pp == '\\')
- *pp = next_symbol_text ();
-
- types[n++] = read_type (pp, objfile);
- }
- *pp += 1; /* get past `end' (the ':' character) */
-
- if (n == 1)
- {
- rval = (struct type **) xmalloc (2 * sizeof (struct type *));
- }
- else if (TYPE_CODE (types[n-1]) != TYPE_CODE_VOID)
- {
- rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *));
- bzero (rval + n, sizeof (struct type *));
- }
- else
- {
- rval = (struct type **) xmalloc (n * sizeof (struct type *));
- }
- memcpy (rval, types, n * sizeof (struct type *));
- return rval;
-}
-
-/* Add a common block's start address to the offset of each symbol
- declared to be in it (by being between a BCOMM/ECOMM pair that uses
- the common block name). */
-
-static void
-fix_common_block (sym, valu)
- struct symbol *sym;
- int valu;
-{
- struct pending *next = (struct pending *) SYMBOL_NAMESPACE (sym);
- for ( ; next; next = next->next)
- {
- register int j;
- for (j = next->nsyms - 1; j >= 0; j--)
- SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
- }
-}
-
-/* Initializer for this module */