/* Symbol table definitions for GDB.
Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
Foundation, Inc.
This file is part of GDB.
char *info;
+ /* Size of this symbol. end_psymtab in dbxread.c uses this
+ information to calculate the end of the partial symtab based on the
+ address of the last symbol plus the size of the last symbol. */
+
+ unsigned long size;
+
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
/* Which source file is this symbol in? Only relevant for mst_file_*. */
char *filename;
};
#define MSYMBOL_INFO(msymbol) (msymbol)->info
+#define MSYMBOL_SIZE(msymbol) (msymbol)->size
#define MSYMBOL_TYPE(msymbol) (msymbol)->type
\f
LOC_COMPUTED_ARG
};
-/* A structure of function pointers describing the location of a
- variable, structure member, or structure base class.
-
- These functions' BATON arguments are generic data pointers, holding
- whatever data the functions need --- the code which provides this
- structure also provides the actual contents of the baton, and
- decides its form. However, there may be other rules about where
- the baton data must be allocated; whoever is pointing to this
- `struct location_funcs' object will know the rules. For example,
- when a symbol S's location is LOC_COMPUTED, then
- SYMBOL_LOCATION_FUNCS(S) is pointing to a location_funcs structure,
- and SYMBOL_LOCATION_BATON(S) is the baton, which must be allocated
- on the same obstack as the symbol itself. */
-
-struct location_funcs
+/* The methods needed to implement a symbol class. These methods can
+ use the symbol's .aux_value for additional per-symbol information.
+
+ At present this is only used to implement location expressions. */
+
+struct symbol_ops
{
/* Return the value of the variable SYMBOL, relative to the stack
struct axs_value * value);
};
-/* Linked list of symbol's live ranges. */
-
-struct range_list
-{
- CORE_ADDR start;
- CORE_ADDR end;
- struct range_list *next;
-};
-
-/* Linked list of aliases for a particular main/primary symbol. */
-struct alias_list
-{
- struct symbol *sym;
- struct alias_list *next;
-};
-
/* This structure is space critical. See space comments at the top. */
struct symbol
ENUM_BITFIELD(domain_enum_tag) domain : 6;
/* Address class */
+ /* NOTE: cagney/2003-11-02: The fields "aclass" and "ops" contain
+ overlapping information. By creating a per-aclass ops vector, or
+ using the aclass as an index into an ops table, the aclass and
+ ops fields can be merged. The latter, for instance, would shave
+ 32-bits from each symbol (relative to a symbol lookup, any table
+ index overhead would be in the noise). */
ENUM_BITFIELD(address_class) aclass : 6;
unsigned short line;
- /* Some symbols require an additional value to be recorded on a per-
- symbol basis. Stash those values here. */
+ /* Method's for symbol's of this class. */
+ /* NOTE: cagney/2003-11-02: See comment above attached to "aclass". */
+
+ const struct symbol_ops *ops;
+
+ /* Some symbols require additional information to be recorded on a
+ per- symbol basis. Stash those values here. */
union
{
/* Used by LOC_BASEREG and LOC_BASEREG_ARG. */
short basereg;
-
- /* For a LOC_COMPUTED or LOC_COMPUTED_ARG symbol, this is the
- baton and location_funcs structure to find its location. For a
- LOC_BLOCK symbol for a function in a compilation unit compiled
- with DWARF 2 information, this is information used internally
- by the DWARF 2 code --- specifically, the location expression
- for the frame base for this function. */
+ /* An arbitrary data pointer. Note that this data must be
+ allocated using the same obstack as the symbol itself. */
+ /* So far it is only used by LOC_COMPUTED and LOC_COMPUTED_ARG to
+ find the location location information. For a LOC_BLOCK symbol
+ for a function in a compilation unit compiled with DWARF 2
+ information, this is information used internally by the DWARF 2
+ code --- specifically, the location expression for the frame
+ base for this function. */
/* FIXME drow/2003-02-21: For the LOC_BLOCK case, it might be better
to add a magic symbol to the block containing this information,
or to have a generic debug info annotation slot for symbols. */
- struct
- {
- void *baton;
- struct location_funcs *funcs;
- } loc;
+ void *ptr;
}
aux_value;
-
- /* Link to a list of aliases for this symbol.
- Only a "primary/main symbol may have aliases. */
- struct alias_list *aliases;
-
- /* List of ranges where this symbol is active. This is only
- used by alias symbols at the current time. */
- struct range_list *ranges;
-
struct symbol *hash_next;
};
#define SYMBOL_LINE(symbol) (symbol)->line
#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg
#define SYMBOL_OBJFILE(symbol) (symbol)->aux_value.objfile
-#define SYMBOL_ALIASES(symbol) (symbol)->aliases
-#define SYMBOL_RANGES(symbol) (symbol)->ranges
-#define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value.loc.baton
-#define SYMBOL_LOCATION_FUNCS(symbol) (symbol)->aux_value.loc.funcs
+#define SYMBOL_OPS(symbol) (symbol)->ops
+#define SYMBOL_LOCATION_BATON(symbol) (symbol)->aux_value.ptr
\f
/* A partial_symbol records the name, domain, and address class of
symbols whose types we have not parsed yet. For functions, it also
extern void reread_symbols (void);
extern struct type *lookup_transparent_type (const char *);
+extern struct type *basic_lookup_transparent_type (const char *);
/* Macro for name of symbol to indicate a file compiled with gcc. */
struct objfile *);
extern struct minimal_symbol *lookup_minimal_symbol_text (const char *,
- const char *,
struct objfile *);
struct minimal_symbol *lookup_minimal_symbol_solib_trampoline (const char *,
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