2 * Symbol lookup and handling.
4 * Copyright (C) 2003 Transmeta Corp.
5 * 2003-2004 Linus Torvalds
7 * Licensed under the Open Software License version 1.1
19 #include "expression.h"
24 * Secondary symbol list for stuff that needs to be output because it
27 struct symbol_list
*translation_unit_used_list
= NULL
;
30 * If the symbol is an inline symbol, add it to the list of symbols to parse
32 void access_symbol(struct symbol
*sym
)
34 if (sym
->ctype
.modifiers
& MOD_INLINE
) {
35 if (!(sym
->ctype
.modifiers
& MOD_ACCESSED
)) {
36 add_symbol(&translation_unit_used_list
, sym
);
37 sym
->ctype
.modifiers
|= MOD_ACCESSED
;
42 struct symbol
*lookup_symbol(struct ident
*ident
, enum namespace ns
)
46 for (sym
= ident
->symbols
; sym
; sym
= sym
->next_id
) {
47 if (sym
->namespace & ns
) {
55 struct context
*alloc_context(void)
57 return __alloc_context(0);
60 struct symbol
*alloc_symbol(struct position pos
, int type
)
62 struct symbol
*sym
= __alloc_symbol(0);
69 struct struct_union_info
{
70 unsigned long max_align
;
71 unsigned long bit_size
;
76 * Unions are fairly easy to lay out ;)
78 static void lay_out_union(struct symbol
*sym
, struct struct_union_info
*info
)
80 examine_symbol_type(sym
);
82 // Unnamed bitfields do not affect alignment.
83 if (sym
->ident
|| !is_bitfield_type(sym
)) {
84 if (sym
->ctype
.alignment
> info
->max_align
)
85 info
->max_align
= sym
->ctype
.alignment
;
88 if (sym
->bit_size
> info
->bit_size
)
89 info
->bit_size
= sym
->bit_size
;
94 static int bitfield_base_size(struct symbol
*sym
)
96 if (sym
->type
== SYM_NODE
)
97 sym
= sym
->ctype
.base_type
;
98 if (sym
->type
== SYM_BITFIELD
)
99 sym
= sym
->ctype
.base_type
;
100 return sym
->bit_size
;
104 * Structures are a bit more interesting to lay out
106 static void lay_out_struct(struct symbol
*sym
, struct struct_union_info
*info
)
108 unsigned long bit_size
, align_bit_mask
;
111 examine_symbol_type(sym
);
113 // Unnamed bitfields do not affect alignment.
114 if (sym
->ident
|| !is_bitfield_type(sym
)) {
115 if (sym
->ctype
.alignment
> info
->max_align
)
116 info
->max_align
= sym
->ctype
.alignment
;
119 bit_size
= info
->bit_size
;
120 base_size
= sym
->bit_size
;
123 * Unsized arrays cause us to not align the resulting
127 info
->align_size
= 0;
131 align_bit_mask
= bytes_to_bits(sym
->ctype
.alignment
) - 1;
134 * Bitfields have some very special rules..
136 if (is_bitfield_type (sym
)) {
137 unsigned long bit_offset
= bit_size
& align_bit_mask
;
138 int room
= bitfield_base_size(sym
) - bit_offset
;
139 // Zero-width fields just fill up the unit.
140 int width
= base_size
? : (bit_offset
? room
: 0);
143 bit_size
= (bit_size
+ align_bit_mask
) & ~align_bit_mask
;
146 sym
->offset
= bits_to_bytes(bit_size
- bit_offset
);
147 sym
->bit_offset
= bit_offset
;
148 sym
->ctype
.base_type
->bit_offset
= bit_offset
;
149 info
->bit_size
= bit_size
+ width
;
150 // warning (sym->pos, "bitfield: offset=%d:%d size=:%d", sym->offset, sym->bit_offset, width);
156 * Otherwise, just align it right and add it up..
158 bit_size
= (bit_size
+ align_bit_mask
) & ~align_bit_mask
;
159 sym
->offset
= bits_to_bytes(bit_size
);
161 info
->bit_size
= bit_size
+ base_size
;
162 // warning (sym->pos, "regular: offset=%d", sym->offset);
165 static struct symbol
* examine_struct_union_type(struct symbol
*sym
, int advance
)
167 struct struct_union_info info
= {
172 unsigned long bit_size
, bit_align
;
173 void (*fn
)(struct symbol
*, struct struct_union_info
*);
174 struct symbol
*member
;
176 fn
= advance
? lay_out_struct
: lay_out_union
;
177 FOR_EACH_PTR(sym
->symbol_list
, member
) {
179 } END_FOR_EACH_PTR(member
);
181 if (!sym
->ctype
.alignment
)
182 sym
->ctype
.alignment
= info
.max_align
;
183 bit_size
= info
.bit_size
;
184 if (info
.align_size
) {
185 bit_align
= bytes_to_bits(sym
->ctype
.alignment
)-1;
186 bit_size
= (bit_size
+ bit_align
) & ~bit_align
;
188 sym
->bit_size
= bit_size
;
192 static struct symbol
*examine_base_type(struct symbol
*sym
)
194 struct symbol
*base_type
;
196 /* Check the base type */
197 base_type
= examine_symbol_type(sym
->ctype
.base_type
);
198 if (!base_type
|| base_type
->type
== SYM_PTR
)
200 sym
->ctype
.as
|= base_type
->ctype
.as
;
201 sym
->ctype
.modifiers
|= base_type
->ctype
.modifiers
& MOD_PTRINHERIT
;
202 concat_ptr_list((struct ptr_list
*)base_type
->ctype
.contexts
,
203 (struct ptr_list
**)&sym
->ctype
.contexts
);
204 if (base_type
->type
== SYM_NODE
) {
205 base_type
= base_type
->ctype
.base_type
;
206 sym
->ctype
.base_type
= base_type
;
211 static struct symbol
* examine_array_type(struct symbol
*sym
)
213 struct symbol
*base_type
= examine_base_type(sym
);
214 unsigned long bit_size
, alignment
;
218 bit_size
= base_type
->bit_size
* get_expression_value(sym
->array_size
);
219 if (!sym
->array_size
|| sym
->array_size
->type
!= EXPR_VALUE
)
221 alignment
= base_type
->ctype
.alignment
;
222 if (!sym
->ctype
.alignment
)
223 sym
->ctype
.alignment
= alignment
;
224 sym
->bit_size
= bit_size
;
228 static struct symbol
*examine_bitfield_type(struct symbol
*sym
)
230 struct symbol
*base_type
= examine_base_type(sym
);
231 unsigned long bit_size
, alignment
, modifiers
;
235 bit_size
= base_type
->bit_size
;
236 if (sym
->bit_size
> bit_size
)
237 warning(sym
->pos
, "impossible field-width, %d, for this type", sym
->bit_size
);
239 alignment
= base_type
->ctype
.alignment
;
240 if (!sym
->ctype
.alignment
)
241 sym
->ctype
.alignment
= alignment
;
242 modifiers
= base_type
->ctype
.modifiers
;
244 /* Bitfields are unsigned, unless the base type was explicitly signed */
245 if (!(modifiers
& MOD_EXPLICITLY_SIGNED
))
246 modifiers
= (modifiers
& ~MOD_SIGNED
) | MOD_UNSIGNED
;
247 sym
->ctype
.modifiers
|= modifiers
& MOD_SIGNEDNESS
;
252 * "typeof" will have to merge the types together
254 void merge_type(struct symbol
*sym
, struct symbol
*base_type
)
256 sym
->ctype
.as
|= base_type
->ctype
.as
;
257 sym
->ctype
.modifiers
|= (base_type
->ctype
.modifiers
& ~MOD_STORAGE
);
258 concat_ptr_list((struct ptr_list
*)base_type
->ctype
.contexts
,
259 (struct ptr_list
**)&sym
->ctype
.contexts
);
260 sym
->ctype
.base_type
= base_type
->ctype
.base_type
;
261 if (sym
->ctype
.base_type
->type
== SYM_NODE
)
262 merge_type(sym
, sym
->ctype
.base_type
);
265 static int count_array_initializer(struct symbol
*t
, struct expression
*expr
)
271 * Arrays of character types are special; they can be initialized by
272 * string literal _or_ by string literal in braces. The latter means
273 * that with T x[] = {<string literal>} number of elements in x depends
274 * on T - if it's a character type, we get the length of string literal
275 * (including NUL), otherwise we have one element here.
277 if (t
->ctype
.base_type
== &int_type
&& t
->ctype
.modifiers
& MOD_CHAR
)
280 switch (expr
->type
) {
281 case EXPR_INITIALIZER
: {
282 struct expression
*entry
;
285 FOR_EACH_PTR(expr
->expr_list
, entry
) {
287 switch (entry
->type
) {
289 if (entry
->idx_to
>= nr
)
290 nr
= entry
->idx_to
+1;
294 str_len
= entry
->string
->length
;
298 } END_FOR_EACH_PTR(entry
);
299 if (count
== 1 && str_len
)
305 nr
= expr
->string
->length
;
312 static struct symbol
* examine_node_type(struct symbol
*sym
)
314 struct symbol
*base_type
= examine_base_type(sym
);
316 unsigned long alignment
, modifiers
;
318 /* SYM_NODE - figure out what the type of the node was.. */
319 modifiers
= sym
->ctype
.modifiers
;
326 bit_size
= base_type
->bit_size
;
327 alignment
= base_type
->ctype
.alignment
;
329 /* Pick up signedness information into the node */
330 sym
->ctype
.modifiers
|= (MOD_SIGNEDNESS
& base_type
->ctype
.modifiers
);
332 if (!sym
->ctype
.alignment
)
333 sym
->ctype
.alignment
= alignment
;
335 /* Unsized array? The size might come from the initializer.. */
336 if (bit_size
< 0 && base_type
->type
== SYM_ARRAY
&& sym
->initializer
) {
337 struct symbol
*node_type
= base_type
->ctype
.base_type
;
338 int count
= count_array_initializer(node_type
, sym
->initializer
);
340 if (node_type
&& node_type
->bit_size
>= 0)
341 bit_size
= node_type
->bit_size
* count
;
344 sym
->bit_size
= bit_size
;
348 static struct symbol
*examine_enum_type(struct symbol
*sym
)
350 struct symbol
*base_type
= examine_base_type(sym
);
352 sym
->ctype
.modifiers
|= (base_type
->ctype
.modifiers
& MOD_SIGNEDNESS
);
353 sym
->bit_size
= bits_in_enum
;
354 if (base_type
->bit_size
> sym
->bit_size
)
355 sym
->bit_size
= base_type
->bit_size
;
356 sym
->ctype
.alignment
= enum_alignment
;
357 if (base_type
->ctype
.alignment
> sym
->ctype
.alignment
)
358 sym
->ctype
.alignment
= base_type
->ctype
.alignment
;
362 static struct symbol
*examine_pointer_type(struct symbol
*sym
)
365 * We need to set the pointer size first, and
366 * examine the thing we point to only afterwards.
367 * That's because this pointer type may end up
368 * being needed for the base type size evaluation.
371 sym
->bit_size
= bits_in_pointer
;
372 if (!sym
->ctype
.alignment
)
373 sym
->ctype
.alignment
= pointer_alignment
;
378 * Fill in type size and alignment information for
379 * regular SYM_TYPE things.
381 struct symbol
*examine_symbol_type(struct symbol
* sym
)
394 return examine_node_type(sym
);
396 return examine_array_type(sym
);
398 return examine_struct_union_type(sym
, 1);
400 return examine_struct_union_type(sym
, 0);
402 return examine_pointer_type(sym
);
404 return examine_enum_type(sym
);
406 return examine_bitfield_type(sym
);
408 /* Size and alignment had better already be set up */
411 struct symbol
*base
= evaluate_expression(sym
->initializer
);
413 if (is_bitfield_type(base
))
414 warning(base
->pos
, "typeof applied to bitfield type");
415 if (base
->type
== SYM_NODE
)
416 base
= base
->ctype
.base_type
;
417 sym
->type
= SYM_NODE
;
418 sym
->ctype
.modifiers
= 0;
419 sym
->ctype
.base_type
= base
;
420 return examine_node_type(sym
);
424 case SYM_PREPROCESSOR
:
425 sparse_error(sym
->pos
, "ctype on preprocessor command? (%s)", show_ident(sym
->ident
));
427 case SYM_UNINITIALIZED
:
428 sparse_error(sym
->pos
, "ctype on uninitialized symbol %p", sym
);
431 examine_base_type(sym
);
434 examine_base_type(sym
);
437 sparse_error(sym
->pos
, "Examining unknown symbol type %d", sym
->type
);
443 const char* get_type_name(enum type type
)
445 const char *type_lookup
[] = {
446 [SYM_UNINITIALIZED
] = "uninitialized",
447 [SYM_PREPROCESSOR
] = "preprocessor",
448 [SYM_BASETYPE
] = "basetype",
450 [SYM_PTR
] = "pointer",
451 [SYM_FN
] = "function",
452 [SYM_ARRAY
] = "array",
453 [SYM_STRUCT
] = "struct",
454 [SYM_UNION
] = "union",
456 [SYM_TYPEDEF
] = "typedef",
457 [SYM_TYPEOF
] = "typeof",
458 [SYM_MEMBER
] = "member",
459 [SYM_BITFIELD
] = "bitfield",
460 [SYM_LABEL
] = "label",
461 [SYM_RESTRICT
] = "restrict",
462 [SYM_FOULED
] = "fouled",
463 [SYM_KEYWORD
] = "keyword",
467 return type_lookup
[type
];
472 struct symbol
*examine_pointer_target(struct symbol
*sym
)
474 return examine_base_type(sym
);
477 static struct symbol_list
*restr
, *fouled
;
479 void create_fouled(struct symbol
*type
)
481 if (type
->bit_size
< bits_in_int
) {
482 struct symbol
*new = alloc_symbol(type
->pos
, type
->type
);
484 new->bit_size
= bits_in_int
;
485 new->type
= SYM_FOULED
;
486 new->ctype
.base_type
= type
;
487 add_symbol(&restr
, type
);
488 add_symbol(&fouled
, new);
492 struct symbol
*befoul(struct symbol
*type
)
494 struct symbol
*t1
, *t2
;
495 while (type
->type
== SYM_NODE
)
496 type
= type
->ctype
.base_type
;
497 PREPARE_PTR_LIST(restr
, t1
);
498 PREPARE_PTR_LIST(fouled
, t2
);
512 void check_declaration(struct symbol
*sym
)
515 struct symbol
*next
= sym
;
517 while ((next
= next
->next_id
) != NULL
) {
518 if (next
->namespace != sym
->namespace)
520 if (sym
->scope
== next
->scope
) {
521 sym
->same_symbol
= next
;
524 if (sym
->ctype
.modifiers
& next
->ctype
.modifiers
& MOD_EXTERN
) {
525 sym
->same_symbol
= next
;
529 if (!Wshadow
|| warned
)
531 if (get_sym_type(next
) == SYM_FN
)
534 warning(sym
->pos
, "symbol '%s' shadows an earlier one", show_ident(sym
->ident
));
535 info(next
->pos
, "originally declared here");
539 void bind_symbol(struct symbol
*sym
, struct ident
*ident
, enum namespace ns
)
543 sparse_error(sym
->pos
, "internal error: symbol type already bound");
546 if (ident
->reserved
&& (ns
& (NS_TYPEDEF
| NS_STRUCT
| NS_LABEL
| NS_SYMBOL
))) {
547 sparse_error(sym
->pos
, "Trying to use reserved word '%s' as identifier", show_ident(ident
));
551 sym
->next_id
= ident
->symbols
;
552 ident
->symbols
= sym
;
553 if (sym
->ident
&& sym
->ident
!= ident
)
554 warning(sym
->pos
, "Symbol '%s' already bound", show_ident(sym
->ident
));
559 if (ns
== NS_SYMBOL
&& toplevel(scope
)) {
560 unsigned mod
= MOD_ADDRESSABLE
| MOD_TOPLEVEL
;
561 scope
= global_scope
;
562 if (sym
->ctype
.modifiers
& MOD_STATIC
) {
566 sym
->ctype
.modifiers
|= mod
;
571 scope
= function_scope
;
572 bind_scope(sym
, scope
);
575 struct symbol
*create_symbol(int stream
, const char *name
, int type
, int namespace)
577 struct token
*token
= built_in_token(stream
, name
);
578 struct symbol
*sym
= alloc_symbol(token
->pos
, type
);
580 bind_symbol(sym
, token
->ident
, namespace);
584 static int evaluate_to_integer(struct expression
*expr
)
586 expr
->ctype
= &int_ctype
;
590 static int evaluate_expect(struct expression
*expr
)
592 /* Should we evaluate it to return the type of the first argument? */
593 expr
->ctype
= &int_ctype
;
597 static int arguments_choose(struct expression
*expr
)
599 struct expression_list
*arglist
= expr
->args
;
600 struct expression
*arg
;
603 FOR_EACH_PTR (arglist
, arg
) {
604 if (!evaluate_expression(arg
))
607 } END_FOR_EACH_PTR(arg
);
609 sparse_error(expr
->pos
,
610 "not enough arguments for __builtin_choose_expr");
613 sparse_error(expr
->pos
,
614 "too many arguments for __builtin_choose_expr");
620 static int evaluate_choose(struct expression
*expr
)
622 struct expression_list
*list
= expr
->args
;
623 struct expression
*arg
, *args
[3];
626 /* there will be exactly 3; we'd already verified that */
627 FOR_EACH_PTR(list
, arg
) {
629 } END_FOR_EACH_PTR(arg
);
631 *expr
= get_expression_value(args
[0]) ? *args
[1] : *args
[2];
636 static int expand_expect(struct expression
*expr
, int cost
)
638 struct expression
*arg
= first_ptr_list((struct ptr_list
*) expr
->args
);
646 * __builtin_warning() has type "int" and always returns 1,
647 * so that you can use it in conditionals or whatever
649 static int expand_warning(struct expression
*expr
, int cost
)
651 struct expression
*arg
;
652 struct expression_list
*arglist
= expr
->args
;
654 FOR_EACH_PTR (arglist
, arg
) {
656 * Constant strings get printed out as a warning. By the
657 * time we get here, the EXPR_STRING has been fully
658 * evaluated, so by now it's an anonymous symbol with a
659 * string initializer.
661 * Just for the heck of it, allow any constant string
664 if (arg
->type
== EXPR_SYMBOL
) {
665 struct symbol
*sym
= arg
->symbol
;
666 if (sym
->initializer
&& sym
->initializer
->type
== EXPR_STRING
) {
667 struct string
*string
= sym
->initializer
->string
;
668 warning(expr
->pos
, "%*s", string
->length
-1, string
->data
);
674 * Any other argument is a conditional. If it's
675 * non-constant, or it is false, we exit and do
676 * not print any warning.
678 if (arg
->type
!= EXPR_VALUE
)
682 } END_FOR_EACH_PTR(arg
);
684 expr
->type
= EXPR_VALUE
;
691 * Type and storage class keywords need to have the symbols
692 * created for them, so that the parser can have enough semantic
693 * information to do parsing.
695 * "double" == "long float", "long double" == "long long float"
697 static struct sym_init
{
699 struct symbol
*base_type
;
700 unsigned int modifiers
;
701 struct symbol_op
*op
;
702 } symbol_init_table
[] = {
704 { "auto", NULL
, MOD_AUTO
},
705 { "register", NULL
, MOD_REGISTER
},
706 { "static", NULL
, MOD_STATIC
},
707 { "extern", NULL
, MOD_EXTERN
},
709 /* Type specifiers */
710 { "void", &void_ctype
, 0 },
711 { "char", NULL
, MOD_CHAR
},
712 { "short", NULL
, MOD_SHORT
},
713 { "int", &int_type
, 0 },
714 { "long", NULL
, MOD_LONG
},
715 { "float", &fp_type
, 0 },
716 { "double", &fp_type
, MOD_LONG
},
717 { "signed", NULL
, MOD_SIGNED
| MOD_EXPLICITLY_SIGNED
},
718 { "__signed", NULL
, MOD_SIGNED
| MOD_EXPLICITLY_SIGNED
},
719 { "__signed__", NULL
, MOD_SIGNED
| MOD_EXPLICITLY_SIGNED
},
720 { "unsigned", NULL
, MOD_UNSIGNED
},
721 { "__label__", &label_ctype
, MOD_LABEL
| MOD_UNSIGNED
},
722 { "_Bool", &bool_ctype
, MOD_UNSIGNED
},
724 /* Predeclared types */
725 { "__builtin_va_list", &int_type
, 0 },
730 static struct symbol_op constant_p_op
= {
731 .evaluate
= evaluate_to_integer
,
732 .expand
= expand_constant_p
735 static struct symbol_op safe_p_op
= {
736 .evaluate
= evaluate_to_integer
,
737 .expand
= expand_safe_p
740 static struct symbol_op warning_op
= {
741 .evaluate
= evaluate_to_integer
,
742 .expand
= expand_warning
745 static struct symbol_op expect_op
= {
746 .evaluate
= evaluate_expect
,
747 .expand
= expand_expect
750 static struct symbol_op choose_op
= {
751 .evaluate
= evaluate_choose
,
752 .args
= arguments_choose
,
758 static struct symbol builtin_fn_type
= { .type
= SYM_FN
/* , .variadic =1 */ };
759 static struct sym_init eval_init_table
[] = {
760 { "__builtin_constant_p", &builtin_fn_type
, MOD_TOPLEVEL
, &constant_p_op
},
761 { "__builtin_safe_p", &builtin_fn_type
, MOD_TOPLEVEL
, &safe_p_op
},
762 { "__builtin_warning", &builtin_fn_type
, MOD_TOPLEVEL
, &warning_op
},
763 { "__builtin_expect", &builtin_fn_type
, MOD_TOPLEVEL
, &expect_op
},
764 { "__builtin_choose_expr", &builtin_fn_type
, MOD_TOPLEVEL
, &choose_op
},
772 struct symbol int_type
,
776 * C types (i.e. actual instances that the abstract types
779 struct symbol bool_ctype
, void_ctype
, type_ctype
,
780 char_ctype
, schar_ctype
, uchar_ctype
,
781 short_ctype
, sshort_ctype
, ushort_ctype
,
782 int_ctype
, sint_ctype
, uint_ctype
,
783 long_ctype
, slong_ctype
, ulong_ctype
,
784 llong_ctype
, sllong_ctype
, ullong_ctype
,
785 float_ctype
, double_ctype
, ldouble_ctype
,
786 string_ctype
, ptr_ctype
, lazy_ptr_ctype
,
787 incomplete_ctype
, label_ctype
, bad_ctype
,
790 struct symbol zero_int
;
792 #define __INIT_IDENT(str, res) { .len = sizeof(str)-1, .name = str, .reserved = res }
793 #define __IDENT(n,str,res) \
794 struct ident n = __INIT_IDENT(str,res)
796 #include "ident-list.h"
798 void init_symbols(void)
800 int stream
= init_stream("builtin", -1, includepath
);
801 struct sym_init
*ptr
;
803 #define __IDENT(n,str,res) \
805 #include "ident-list.h"
808 for (ptr
= symbol_init_table
; ptr
->name
; ptr
++) {
810 sym
= create_symbol(stream
, ptr
->name
, SYM_NODE
, NS_TYPEDEF
);
811 sym
->ident
->reserved
= 1;
812 sym
->ctype
.base_type
= ptr
->base_type
;
813 sym
->ctype
.modifiers
= ptr
->modifiers
;
816 builtin_fn_type
.variadic
= 1;
817 for (ptr
= eval_init_table
; ptr
->name
; ptr
++) {
819 sym
= create_symbol(stream
, ptr
->name
, SYM_NODE
, NS_SYMBOL
);
820 sym
->ctype
.base_type
= ptr
->base_type
;
821 sym
->ctype
.modifiers
= ptr
->modifiers
;
826 #define MOD_ESIGNED (MOD_SIGNED | MOD_EXPLICITLY_SIGNED)
827 #define MOD_LL (MOD_LONG | MOD_LONGLONG)
828 static const struct ctype_declare
{
831 unsigned long modifiers
;
834 struct symbol
*base_type
;
835 } ctype_declaration
[] = {
836 { &bool_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
, &bits_in_bool
, &max_int_alignment
, &int_type
},
837 { &void_ctype
, SYM_BASETYPE
, 0, NULL
, NULL
, NULL
},
838 { &type_ctype
, SYM_BASETYPE
, MOD_TYPE
, NULL
, NULL
, NULL
},
839 { &incomplete_ctype
,SYM_BASETYPE
, 0, NULL
, NULL
, NULL
},
840 { &bad_ctype
, SYM_BASETYPE
, 0, NULL
, NULL
, NULL
},
842 { &char_ctype
, SYM_BASETYPE
, MOD_SIGNED
| MOD_CHAR
, &bits_in_char
, &max_int_alignment
, &int_type
},
843 { &schar_ctype
, SYM_BASETYPE
, MOD_ESIGNED
| MOD_CHAR
, &bits_in_char
, &max_int_alignment
, &int_type
},
844 { &uchar_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
| MOD_CHAR
, &bits_in_char
, &max_int_alignment
, &int_type
},
845 { &short_ctype
, SYM_BASETYPE
, MOD_SIGNED
| MOD_SHORT
, &bits_in_short
, &max_int_alignment
, &int_type
},
846 { &sshort_ctype
, SYM_BASETYPE
, MOD_ESIGNED
| MOD_SHORT
, &bits_in_short
, &max_int_alignment
, &int_type
},
847 { &ushort_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
| MOD_SHORT
, &bits_in_short
, &max_int_alignment
, &int_type
},
848 { &int_ctype
, SYM_BASETYPE
, MOD_SIGNED
, &bits_in_int
, &max_int_alignment
, &int_type
},
849 { &sint_ctype
, SYM_BASETYPE
, MOD_ESIGNED
, &bits_in_int
, &max_int_alignment
, &int_type
},
850 { &uint_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
, &bits_in_int
, &max_int_alignment
, &int_type
},
851 { &long_ctype
, SYM_BASETYPE
, MOD_SIGNED
| MOD_LONG
, &bits_in_long
, &max_int_alignment
, &int_type
},
852 { &slong_ctype
, SYM_BASETYPE
, MOD_ESIGNED
| MOD_LONG
, &bits_in_long
, &max_int_alignment
, &int_type
},
853 { &ulong_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
| MOD_LONG
, &bits_in_long
, &max_int_alignment
, &int_type
},
854 { &llong_ctype
, SYM_BASETYPE
, MOD_SIGNED
| MOD_LL
, &bits_in_longlong
, &max_int_alignment
, &int_type
},
855 { &sllong_ctype
, SYM_BASETYPE
, MOD_ESIGNED
| MOD_LL
, &bits_in_longlong
, &max_int_alignment
, &int_type
},
856 { &ullong_ctype
, SYM_BASETYPE
, MOD_UNSIGNED
| MOD_LL
, &bits_in_longlong
, &max_int_alignment
, &int_type
},
858 { &float_ctype
, SYM_BASETYPE
, 0, &bits_in_float
, &max_fp_alignment
, &fp_type
},
859 { &double_ctype
, SYM_BASETYPE
, MOD_LONG
, &bits_in_double
, &max_fp_alignment
, &fp_type
},
860 { &ldouble_ctype
, SYM_BASETYPE
, MOD_LONG
| MOD_LONGLONG
, &bits_in_longdouble
, &max_fp_alignment
, &fp_type
},
862 { &string_ctype
, SYM_PTR
, 0, &bits_in_pointer
, &pointer_alignment
, &char_ctype
},
863 { &ptr_ctype
, SYM_PTR
, 0, &bits_in_pointer
, &pointer_alignment
, &void_ctype
},
864 { &null_ctype
, SYM_PTR
, 0, &bits_in_pointer
, &pointer_alignment
, &void_ctype
},
865 { &label_ctype
, SYM_PTR
, 0, &bits_in_pointer
, &pointer_alignment
, &void_ctype
},
866 { &lazy_ptr_ctype
, SYM_PTR
, 0, &bits_in_pointer
, &pointer_alignment
, &void_ctype
},
872 void init_ctype(void)
874 const struct ctype_declare
*ctype
;
876 for (ctype
= ctype_declaration
; ctype
->ptr
; ctype
++) {
877 struct symbol
*sym
= ctype
->ptr
;
878 unsigned long bit_size
= ctype
->bit_size
? *ctype
->bit_size
: -1;
879 unsigned long maxalign
= ctype
->maxalign
? *ctype
->maxalign
: 0;
880 unsigned long alignment
= bits_to_bytes(bit_size
+ bits_in_char
- 1);
882 if (alignment
> maxalign
)
883 alignment
= maxalign
;
884 sym
->type
= ctype
->type
;
885 sym
->bit_size
= bit_size
;
886 sym
->ctype
.alignment
= alignment
;
887 sym
->ctype
.base_type
= ctype
->base_type
;
888 sym
->ctype
.modifiers
= ctype
->modifiers
;