2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
9 #include <sys/utsname.h>
11 #define LKC_DIRECT_LINK
14 struct symbol symbol_yes
= {
17 .flags
= SYMBOL_YES
|SYMBOL_VALID
,
21 .flags
= SYMBOL_MOD
|SYMBOL_VALID
,
25 .flags
= SYMBOL_NO
|SYMBOL_VALID
,
29 .flags
= SYMBOL_VALID
,
33 struct symbol
*modules_sym
;
36 void sym_add_default(struct symbol
*sym
, const char *def
)
38 struct property
*prop
= prop_alloc(P_DEFAULT
, sym
);
40 prop
->expr
= expr_alloc_symbol(sym_lookup(def
, 1));
47 static bool inited
= false;
53 sym
= sym_lookup("VERSION", 0);
55 sym
->flags
|= SYMBOL_AUTO
;
56 p
= getenv("VERSION");
58 sym_add_default(sym
, p
);
60 sym
= sym_lookup("TARGET_ARCH", 0);
62 sym
->flags
|= SYMBOL_AUTO
;
63 p
= getenv("TARGET_ARCH");
65 sym_add_default(sym
, p
);
69 enum symbol_type
sym_get_type(struct symbol
*sym
)
71 enum symbol_type type
= sym
->type
;
73 if (type
== S_TRISTATE
) {
74 if (sym_is_choice_value(sym
) && sym
->visible
== yes
)
76 else if (modules_val
== no
)
82 const char *sym_type_name(enum symbol_type type
)
103 struct property
*sym_get_choice_prop(struct symbol
*sym
)
105 struct property
*prop
;
107 for_all_choices(sym
, prop
)
112 struct property
*sym_get_default_prop(struct symbol
*sym
)
114 struct property
*prop
;
116 for_all_defaults(sym
, prop
) {
117 prop
->visible
.tri
= expr_calc_value(prop
->visible
.expr
);
118 if (prop
->visible
.tri
!= no
)
124 struct property
*sym_get_range_prop(struct symbol
*sym
)
126 struct property
*prop
;
128 for_all_properties(sym
, prop
, P_RANGE
) {
129 prop
->visible
.tri
= expr_calc_value(prop
->visible
.expr
);
130 if (prop
->visible
.tri
!= no
)
136 static void sym_calc_visibility(struct symbol
*sym
)
138 struct property
*prop
;
141 /* any prompt visible? */
143 for_all_prompts(sym
, prop
) {
144 prop
->visible
.tri
= expr_calc_value(prop
->visible
.expr
);
145 tri
= E_OR(tri
, prop
->visible
.tri
);
147 if (tri
== mod
&& (sym
->type
!= S_TRISTATE
|| modules_val
== no
))
149 if (sym
->visible
!= tri
) {
151 sym_set_changed(sym
);
153 if (sym_is_choice_value(sym
))
156 if (sym
->rev_dep
.expr
)
157 tri
= expr_calc_value(sym
->rev_dep
.expr
);
158 if (tri
== mod
&& sym_get_type(sym
) == S_BOOLEAN
)
160 if (sym
->rev_dep
.tri
!= tri
) {
161 sym
->rev_dep
.tri
= tri
;
162 sym_set_changed(sym
);
166 static struct symbol
*sym_calc_choice(struct symbol
*sym
)
168 struct symbol
*def_sym
;
169 struct property
*prop
;
172 /* is the user choice visible? */
173 def_sym
= sym
->user
.val
;
175 sym_calc_visibility(def_sym
);
176 if (def_sym
->visible
!= no
)
180 /* any of the defaults visible? */
181 for_all_defaults(sym
, prop
) {
182 prop
->visible
.tri
= expr_calc_value(prop
->visible
.expr
);
183 if (prop
->visible
.tri
== no
)
185 def_sym
= prop_get_symbol(prop
);
186 sym_calc_visibility(def_sym
);
187 if (def_sym
->visible
!= no
)
191 /* just get the first visible value */
192 prop
= sym_get_choice_prop(sym
);
193 for (e
= prop
->expr
; e
; e
= e
->left
.expr
) {
194 def_sym
= e
->right
.sym
;
195 sym_calc_visibility(def_sym
);
196 if (def_sym
->visible
!= no
)
200 /* no choice? reset tristate value */
205 void sym_calc_value(struct symbol
*sym
)
207 struct symbol_value newval
, oldval
;
208 struct property
*prop
;
214 if (sym
->flags
& SYMBOL_VALID
)
216 sym
->flags
|= SYMBOL_VALID
;
224 newval
= symbol_empty
.curr
;
228 newval
= symbol_no
.curr
;
231 sym
->curr
.val
= sym
->name
;
235 if (!sym_is_choice_value(sym
))
236 sym
->flags
&= ~SYMBOL_WRITE
;
238 sym_calc_visibility(sym
);
240 /* set default if recursively called */
243 switch (sym_get_type(sym
)) {
246 if (sym_is_choice_value(sym
) && sym
->visible
== yes
) {
247 prop
= sym_get_choice_prop(sym
);
248 newval
.tri
= (prop_get_symbol(prop
)->curr
.val
== sym
) ? yes
: no
;
249 } else if (E_OR(sym
->visible
, sym
->rev_dep
.tri
) != no
) {
250 sym
->flags
|= SYMBOL_WRITE
;
251 if (sym_has_value(sym
))
252 newval
.tri
= sym
->user
.tri
;
253 else if (!sym_is_choice(sym
)) {
254 prop
= sym_get_default_prop(sym
);
256 newval
.tri
= expr_calc_value(prop
->expr
);
258 newval
.tri
= E_OR(E_AND(newval
.tri
, sym
->visible
), sym
->rev_dep
.tri
);
259 } else if (!sym_is_choice(sym
)) {
260 prop
= sym_get_default_prop(sym
);
262 sym
->flags
|= SYMBOL_WRITE
;
263 newval
.tri
= expr_calc_value(prop
->expr
);
266 if (newval
.tri
== mod
&& sym_get_type(sym
) == S_BOOLEAN
)
272 if (sym
->visible
!= no
) {
273 sym
->flags
|= SYMBOL_WRITE
;
274 if (sym_has_value(sym
)) {
275 newval
.val
= sym
->user
.val
;
279 prop
= sym_get_default_prop(sym
);
281 struct symbol
*ds
= prop_get_symbol(prop
);
283 sym
->flags
|= SYMBOL_WRITE
;
285 newval
.val
= ds
->curr
.val
;
294 if (sym_is_choice(sym
) && newval
.tri
== yes
)
295 sym
->curr
.val
= sym_calc_choice(sym
);
297 if (memcmp(&oldval
, &sym
->curr
, sizeof(oldval
)))
298 sym_set_changed(sym
);
299 if (modules_sym
== sym
)
300 modules_val
= modules_sym
->curr
.tri
;
302 if (sym_is_choice(sym
)) {
303 int flags
= sym
->flags
& (SYMBOL_CHANGED
| SYMBOL_WRITE
);
304 prop
= sym_get_choice_prop(sym
);
305 for (e
= prop
->expr
; e
; e
= e
->left
.expr
) {
306 e
->right
.sym
->flags
|= flags
;
307 if (flags
& SYMBOL_CHANGED
)
308 sym_set_changed(e
->right
.sym
);
313 void sym_clear_all_valid(void)
318 for_all_symbols(i
, sym
)
319 sym
->flags
&= ~SYMBOL_VALID
;
322 sym_calc_value(modules_sym
);
325 void sym_set_changed(struct symbol
*sym
)
327 struct property
*prop
;
329 sym
->flags
|= SYMBOL_CHANGED
;
330 for (prop
= sym
->prop
; prop
; prop
= prop
->next
) {
332 prop
->menu
->flags
|= MENU_CHANGED
;
336 void sym_set_all_changed(void)
341 for_all_symbols(i
, sym
)
342 sym_set_changed(sym
);
345 bool sym_tristate_within_range(struct symbol
*sym
, tristate val
)
347 int type
= sym_get_type(sym
);
349 if (sym
->visible
== no
)
352 if (type
!= S_BOOLEAN
&& type
!= S_TRISTATE
)
355 if (type
== S_BOOLEAN
&& val
== mod
)
357 if (sym
->visible
<= sym
->rev_dep
.tri
)
359 if (sym_is_choice_value(sym
) && sym
->visible
== yes
)
361 return val
>= sym
->rev_dep
.tri
&& val
<= sym
->visible
;
364 bool sym_set_tristate_value(struct symbol
*sym
, tristate val
)
366 tristate oldval
= sym_get_tristate_value(sym
);
368 if (oldval
!= val
&& !sym_tristate_within_range(sym
, val
))
371 if (sym
->flags
& SYMBOL_NEW
) {
372 sym
->flags
&= ~SYMBOL_NEW
;
373 sym_set_changed(sym
);
375 if (sym_is_choice_value(sym
) && val
== yes
) {
376 struct symbol
*cs
= prop_get_symbol(sym_get_choice_prop(sym
));
379 cs
->flags
&= ~SYMBOL_NEW
;
384 sym_clear_all_valid();
385 if (sym
== modules_sym
)
386 sym_set_all_changed();
392 tristate
sym_toggle_tristate_value(struct symbol
*sym
)
394 tristate oldval
, newval
;
396 oldval
= newval
= sym_get_tristate_value(sym
);
409 if (sym_set_tristate_value(sym
, newval
))
411 } while (oldval
!= newval
);
415 bool sym_string_valid(struct symbol
*sym
, const char *str
)
428 if (ch
== '0' && *str
!= 0)
430 while ((ch
= *str
++)) {
436 if (str
[0] == '0' && (str
[1] == 'x' || str
[1] == 'X'))
442 } while ((ch
= *str
++));
458 bool sym_string_within_range(struct symbol
*sym
, const char *str
)
460 struct property
*prop
;
465 return sym_string_valid(sym
, str
);
467 if (!sym_string_valid(sym
, str
))
469 prop
= sym_get_range_prop(sym
);
472 val
= strtol(str
, NULL
, 10);
473 return val
>= strtol(prop
->expr
->left
.sym
->name
, NULL
, 10) &&
474 val
<= strtol(prop
->expr
->right
.sym
->name
, NULL
, 10);
476 if (!sym_string_valid(sym
, str
))
478 prop
= sym_get_range_prop(sym
);
481 val
= strtol(str
, NULL
, 16);
482 return val
>= strtol(prop
->expr
->left
.sym
->name
, NULL
, 16) &&
483 val
<= strtol(prop
->expr
->right
.sym
->name
, NULL
, 16);
488 return sym_tristate_within_range(sym
, yes
);
490 return sym_tristate_within_range(sym
, mod
);
492 return sym_tristate_within_range(sym
, no
);
500 bool sym_set_string_value(struct symbol
*sym
, const char *newval
)
511 return sym_set_tristate_value(sym
, yes
);
513 return sym_set_tristate_value(sym
, mod
);
515 return sym_set_tristate_value(sym
, no
);
522 if (!sym_string_within_range(sym
, newval
))
525 if (sym
->flags
& SYMBOL_NEW
) {
526 sym
->flags
&= ~SYMBOL_NEW
;
527 sym_set_changed(sym
);
530 oldval
= sym
->user
.val
;
531 size
= strlen(newval
) + 1;
532 if (sym
->type
== S_HEX
&& (newval
[0] != '0' || (newval
[1] != 'x' && newval
[1] != 'X'))) {
534 sym
->user
.val
= val
= malloc(size
);
537 } else if (!oldval
|| strcmp(oldval
, newval
))
538 sym
->user
.val
= val
= malloc(size
);
543 free((void *)oldval
);
544 sym_clear_all_valid();
549 const char *sym_get_string_value(struct symbol
*sym
)
556 val
= sym_get_tristate_value(sym
);
569 return (const char *)sym
->curr
.val
;
572 bool sym_is_changable(struct symbol
*sym
)
574 return sym
->visible
> sym
->rev_dep
.tri
;
577 struct symbol
*sym_lookup(const char *name
, int isconst
)
579 struct symbol
*symbol
;
585 if (name
[0] && !name
[1]) {
587 case 'y': return &symbol_yes
;
588 case 'm': return &symbol_mod
;
589 case 'n': return &symbol_no
;
592 for (ptr
= name
; *ptr
; ptr
++)
596 for (symbol
= symbol_hash
[hash
]; symbol
; symbol
= symbol
->next
) {
597 if (!strcmp(symbol
->name
, name
)) {
598 if ((isconst
&& symbol
->flags
& SYMBOL_CONST
) ||
599 (!isconst
&& !(symbol
->flags
& SYMBOL_CONST
)))
603 new_name
= strdup(name
);
609 symbol
= malloc(sizeof(*symbol
));
610 memset(symbol
, 0, sizeof(*symbol
));
611 symbol
->name
= new_name
;
612 symbol
->type
= S_UNKNOWN
;
613 symbol
->flags
= SYMBOL_NEW
;
615 symbol
->flags
|= SYMBOL_CONST
;
617 symbol
->next
= symbol_hash
[hash
];
618 symbol_hash
[hash
] = symbol
;
623 struct symbol
*sym_find(const char *name
)
625 struct symbol
*symbol
= NULL
;
632 if (name
[0] && !name
[1]) {
634 case 'y': return &symbol_yes
;
635 case 'm': return &symbol_mod
;
636 case 'n': return &symbol_no
;
639 for (ptr
= name
; *ptr
; ptr
++)
643 for (symbol
= symbol_hash
[hash
]; symbol
; symbol
= symbol
->next
) {
644 if (!strcmp(symbol
->name
, name
) &&
645 !(symbol
->flags
& SYMBOL_CONST
))
652 struct symbol
*sym_check_deps(struct symbol
*sym
);
654 static struct symbol
*sym_check_expr_deps(struct expr
*e
)
663 sym
= sym_check_expr_deps(e
->left
.expr
);
666 return sym_check_expr_deps(e
->right
.expr
);
668 return sym_check_expr_deps(e
->left
.expr
);
671 sym
= sym_check_deps(e
->left
.sym
);
674 return sym_check_deps(e
->right
.sym
);
676 return sym_check_deps(e
->left
.sym
);
680 printf("Oops! How to check %d?\n", e
->type
);
684 struct symbol
*sym_check_deps(struct symbol
*sym
)
687 struct property
*prop
;
689 if (sym
->flags
& SYMBOL_CHECK_DONE
)
691 if (sym
->flags
& SYMBOL_CHECK
) {
692 printf("Warning! Found recursive dependency: %s", sym
->name
);
696 sym
->flags
|= (SYMBOL_CHECK
| SYMBOL_CHECKED
);
697 sym2
= sym_check_expr_deps(sym
->rev_dep
.expr
);
701 for (prop
= sym
->prop
; prop
; prop
= prop
->next
) {
702 if (prop
->type
== P_CHOICE
|| prop
->type
== P_SELECT
)
704 sym2
= sym_check_expr_deps(prop
->visible
.expr
);
707 if (prop
->type
!= P_DEFAULT
|| sym_is_choice(sym
))
709 sym2
= sym_check_expr_deps(prop
->expr
);
715 printf(" %s", sym
->name
);
716 sym
->flags
&= ~SYMBOL_CHECK
;
720 struct property
*prop_alloc(enum prop_type type
, struct symbol
*sym
)
722 struct property
*prop
;
723 struct property
**propp
;
725 prop
= malloc(sizeof(*prop
));
726 memset(prop
, 0, sizeof(*prop
));
729 prop
->file
= current_file
;
730 prop
->lineno
= zconf_lineno();
732 /* append property to the prop list of symbol */
734 for (propp
= &sym
->prop
; *propp
; propp
= &(*propp
)->next
)
742 struct symbol
*prop_get_symbol(struct property
*prop
)
744 if (prop
->expr
&& (prop
->expr
->type
== E_SYMBOL
||
745 prop
->expr
->type
== E_CHOICE
))
746 return prop
->expr
->left
.sym
;
750 const char *prop_get_type_name(enum prop_type type
)
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