4 * Basic symbol and namespace definitions.
6 * Copyright (C) 2003 Transmeta Corp.
8 * Licensed under the Open Software License version 1.1
14 * An identifier with semantic meaning is a "symbol".
16 * There's a 1:n relationship: each symbol is always
17 * associated with one identifier, while each identifier
18 * can have one or more semantic meanings due to C scope
21 * The progression is symbol -> token -> identifier. The
22 * token contains the information on where the symbol was
53 unsigned long modifiers
;
54 unsigned long alignment
;
55 unsigned int contextmask
, context
, as
;
56 struct symbol
*base_type
;
60 enum namespace namespace:8;
62 struct position pos
; /* Where this symbol was declared */
63 struct ident
*ident
; /* What identifier this symbol is associated with */
64 struct symbol
*next_id
; /* Next semantic symbol that shares this identifier */
65 struct symbol
**id_list
; /* Backpointer to symbol list head */
67 struct symbol
*same_symbol
;
68 int (*evaluate
)(struct expression
*);
70 struct preprocessor_sym
{
71 struct token
*expansion
;
72 struct token
*arglist
;
77 unsigned int bit_size
;
78 unsigned int bit_offset
:8,
86 struct symbol_list
*arguments
;
87 struct statement
*stmt
;
88 struct symbol_list
*symbol_list
;
89 struct expression
*initializer
;
90 long long value
; /* Initial value */
92 void *aux
; /* Auxiliary info, eg. backend information */
96 #define MOD_AUTO 0x0001
97 #define MOD_REGISTER 0x0002
98 #define MOD_STATIC 0x0004
99 #define MOD_EXTERN 0x0008
101 #define MOD_STORAGE (MOD_AUTO | MOD_REGISTER | MOD_STATIC | MOD_EXTERN | MOD_INLINE | MOD_TOPLEVEL)
103 #define MOD_CONST 0x0010
104 #define MOD_VOLATILE 0x0020
105 #define MOD_SIGNED 0x0040
106 #define MOD_UNSIGNED 0x0080
108 #define MOD_CHAR 0x0100
109 #define MOD_SHORT 0x0200
110 #define MOD_LONG 0x0400
111 #define MOD_LONGLONG 0x0800
113 #define MOD_TYPEDEF 0x1000
114 #define MOD_STRUCTOF 0x2000
115 #define MOD_UNIONOF 0x4000
116 #define MOD_ENUMOF 0x8000
118 #define MOD_TYPEOF 0x10000
119 #define MOD_ATTRIBUTE 0x20000
120 #define MOD_INLINE 0x40000
121 #define MOD_ADDRESSABLE 0x80000
123 #define MOD_NOCAST 0x100000
124 #define MOD_NODEREF 0x200000
125 #define MOD_ACCESSED 0x400000
126 #define MOD_TOPLEVEL 0x800000 // scoping..
128 #define MOD_LABEL 0x1000000
131 extern struct symbol void_type
,
139 extern struct symbol bool_ctype
, void_ctype
,
140 char_ctype
, uchar_ctype
,
141 short_ctype
, ushort_ctype
,
142 int_ctype
, uint_ctype
,
143 long_ctype
, ulong_ctype
,
144 llong_ctype
, ullong_ctype
,
145 float_ctype
, double_ctype
, ldouble_ctype
,
146 string_ctype
, ptr_ctype
, label_type
;
149 /* Basic identifiers */
150 extern struct ident sizeof_ident
,
167 extern struct ident __asm___ident
,
176 #define symbol_is_typename(sym) ((sym)->type == SYM_TYPE)
178 extern struct symbol_list
*used_list
;
180 extern void access_symbol(struct symbol
*);
183 extern struct symbol
*lookup_symbol(struct ident
*, enum namespace);
184 extern void init_symbols(void);
185 extern struct symbol
*alloc_symbol(struct position
, int type
);
186 extern void show_type(struct symbol
*);
187 extern const char *modifier_string(unsigned long mod
);
188 extern void show_symbol(struct symbol
*);
189 extern void show_type_list(struct symbol
*);
190 extern void show_symbol_list(struct symbol_list
*, const char *);
191 extern void add_symbol(struct symbol_list
**, struct symbol
*);
192 extern void bind_symbol(struct symbol
*, struct ident
*, enum namespace);
194 extern struct symbol
*examine_symbol_type(struct symbol
*);
195 extern void examine_simple_symbol_type(struct symbol
*);
196 extern const char *show_typename(struct symbol
*sym
);
198 extern void debug_symbol(struct symbol
*);
199 extern void merge_type(struct symbol
*sym
, struct symbol
*base_type
);
200 extern void check_declaration(struct symbol
*sym
);
202 #endif /* SEMANTIC_H */