2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
10 #include <sys/utsname.h>
12 #define LKC_DIRECT_LINK
15 struct symbol symbol_yes = {
18 .flags = SYMBOL_YES|SYMBOL_VALID,
22 .flags = SYMBOL_MOD|SYMBOL_VALID,
26 .flags = SYMBOL_NO|SYMBOL_VALID,
30 .flags = SYMBOL_VALID,
34 struct symbol *modules_sym;
37 void sym_add_default(struct symbol *sym, const char *def)
39 struct property *prop = prop_alloc(P_DEFAULT, sym);
41 prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
49 static bool inited = false;
57 sym = sym_lookup("ARCH", 0);
59 sym->flags |= SYMBOL_AUTO;
62 sym_add_default(sym, p);
64 sym = sym_lookup("KERNELRELEASE", 0);
66 sym->flags |= SYMBOL_AUTO;
67 p = getenv("KERNELRELEASE");
69 sym_add_default(sym, p);
71 sym = sym_lookup("UNAME_RELEASE", 0);
73 sym->flags |= SYMBOL_AUTO;
74 sym_add_default(sym, uts.release);
77 enum symbol_type sym_get_type(struct symbol *sym)
79 enum symbol_type type = sym->type;
81 if (type == S_TRISTATE) {
82 if (sym_is_choice_value(sym) && sym->visible == yes)
84 else if (modules_val == no)
90 const char *sym_type_name(enum symbol_type type)
111 struct property *sym_get_choice_prop(struct symbol *sym)
113 struct property *prop;
115 for_all_choices(sym, prop)
120 struct property *sym_get_default_prop(struct symbol *sym)
122 struct property *prop;
124 for_all_defaults(sym, prop) {
125 prop->visible.tri = expr_calc_value(prop->visible.expr);
126 if (prop->visible.tri != no)
132 struct property *sym_get_range_prop(struct symbol *sym)
134 struct property *prop;
136 for_all_properties(sym, prop, P_RANGE) {
137 prop->visible.tri = expr_calc_value(prop->visible.expr);
138 if (prop->visible.tri != no)
144 static void sym_calc_visibility(struct symbol *sym)
146 struct property *prop;
149 /* any prompt visible? */
151 for_all_prompts(sym, prop) {
152 prop->visible.tri = expr_calc_value(prop->visible.expr);
153 tri = E_OR(tri, prop->visible.tri);
155 if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
157 if (sym->visible != tri) {
159 sym_set_changed(sym);
161 if (sym_is_choice_value(sym))
164 if (sym->rev_dep.expr)
165 tri = expr_calc_value(sym->rev_dep.expr);
166 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
168 if (sym->rev_dep.tri != tri) {
169 sym->rev_dep.tri = tri;
170 sym_set_changed(sym);
174 static struct symbol *sym_calc_choice(struct symbol *sym)
176 struct symbol *def_sym;
177 struct property *prop;
180 /* is the user choice visible? */
181 def_sym = sym->user.val;
183 sym_calc_visibility(def_sym);
184 if (def_sym->visible != no)
188 /* any of the defaults visible? */
189 for_all_defaults(sym, prop) {
190 prop->visible.tri = expr_calc_value(prop->visible.expr);
191 if (prop->visible.tri == no)
193 def_sym = prop_get_symbol(prop);
194 sym_calc_visibility(def_sym);
195 if (def_sym->visible != no)
199 /* just get the first visible value */
200 prop = sym_get_choice_prop(sym);
201 for (e = prop->expr; e; e = e->left.expr) {
202 def_sym = e->right.sym;
203 sym_calc_visibility(def_sym);
204 if (def_sym->visible != no)
208 /* no choice? reset tristate value */
213 void sym_calc_value(struct symbol *sym)
215 struct symbol_value newval, oldval;
216 struct property *prop;
222 if (sym->flags & SYMBOL_VALID)
224 sym->flags |= SYMBOL_VALID;
232 newval = symbol_empty.curr;
236 newval = symbol_no.curr;
239 sym->curr.val = sym->name;
243 if (!sym_is_choice_value(sym))
244 sym->flags &= ~SYMBOL_WRITE;
246 sym_calc_visibility(sym);
248 /* set default if recursively called */
251 switch (sym_get_type(sym)) {
254 if (sym_is_choice_value(sym) && sym->visible == yes) {
255 prop = sym_get_choice_prop(sym);
256 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
257 } else if (E_OR(sym->visible, sym->rev_dep.tri) != no) {
258 sym->flags |= SYMBOL_WRITE;
259 if (sym_has_value(sym))
260 newval.tri = sym->user.tri;
261 else if (!sym_is_choice(sym)) {
262 prop = sym_get_default_prop(sym);
264 newval.tri = expr_calc_value(prop->expr);
266 newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri);
267 } else if (!sym_is_choice(sym)) {
268 prop = sym_get_default_prop(sym);
270 sym->flags |= SYMBOL_WRITE;
271 newval.tri = expr_calc_value(prop->expr);
274 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
280 if (sym->visible != no) {
281 sym->flags |= SYMBOL_WRITE;
282 if (sym_has_value(sym)) {
283 newval.val = sym->user.val;
287 prop = sym_get_default_prop(sym);
289 struct symbol *ds = prop_get_symbol(prop);
291 sym->flags |= SYMBOL_WRITE;
293 newval.val = ds->curr.val;
302 if (sym_is_choice(sym) && newval.tri == yes)
303 sym->curr.val = sym_calc_choice(sym);
305 if (memcmp(&oldval, &sym->curr, sizeof(oldval)))
306 sym_set_changed(sym);
307 if (modules_sym == sym)
308 modules_val = modules_sym->curr.tri;
310 if (sym_is_choice(sym)) {
311 int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
312 prop = sym_get_choice_prop(sym);
313 for (e = prop->expr; e; e = e->left.expr) {
314 e->right.sym->flags |= flags;
315 if (flags & SYMBOL_CHANGED)
316 sym_set_changed(e->right.sym);
321 void sym_clear_all_valid(void)
326 for_all_symbols(i, sym)
327 sym->flags &= ~SYMBOL_VALID;
330 sym_calc_value(modules_sym);
333 void sym_set_changed(struct symbol *sym)
335 struct property *prop;
337 sym->flags |= SYMBOL_CHANGED;
338 for (prop = sym->prop; prop; prop = prop->next) {
340 prop->menu->flags |= MENU_CHANGED;
344 void sym_set_all_changed(void)
349 for_all_symbols(i, sym)
350 sym_set_changed(sym);
353 bool sym_tristate_within_range(struct symbol *sym, tristate val)
355 int type = sym_get_type(sym);
357 if (sym->visible == no)
360 if (type != S_BOOLEAN && type != S_TRISTATE)
363 if (type == S_BOOLEAN && val == mod)
365 if (sym->visible <= sym->rev_dep.tri)
367 if (sym_is_choice_value(sym) && sym->visible == yes)
369 return val >= sym->rev_dep.tri && val <= sym->visible;
372 bool sym_set_tristate_value(struct symbol *sym, tristate val)
374 tristate oldval = sym_get_tristate_value(sym);
376 if (oldval != val && !sym_tristate_within_range(sym, val))
379 if (sym->flags & SYMBOL_NEW) {
380 sym->flags &= ~SYMBOL_NEW;
381 sym_set_changed(sym);
384 * setting a choice value also resets the new flag of the choice
385 * symbol and all other choice values.
387 if (sym_is_choice_value(sym) && val == yes) {
388 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
389 struct property *prop;
393 cs->flags &= ~SYMBOL_NEW;
394 prop = sym_get_choice_prop(cs);
395 for (e = prop->expr; e; e = e->left.expr) {
396 if (e->right.sym->visible != no)
397 e->right.sym->flags &= ~SYMBOL_NEW;
403 sym_clear_all_valid();
404 if (sym == modules_sym)
405 sym_set_all_changed();
411 tristate sym_toggle_tristate_value(struct symbol *sym)
413 tristate oldval, newval;
415 oldval = newval = sym_get_tristate_value(sym);
428 if (sym_set_tristate_value(sym, newval))
430 } while (oldval != newval);
434 bool sym_string_valid(struct symbol *sym, const char *str)
447 if (ch == '0' && *str != 0)
449 while ((ch = *str++)) {
455 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
461 } while ((ch = *str++));
477 bool sym_string_within_range(struct symbol *sym, const char *str)
479 struct property *prop;
484 return sym_string_valid(sym, str);
486 if (!sym_string_valid(sym, str))
488 prop = sym_get_range_prop(sym);
491 val = strtol(str, NULL, 10);
492 return val >= strtol(prop->expr->left.sym->name, NULL, 10) &&
493 val <= strtol(prop->expr->right.sym->name, NULL, 10);
495 if (!sym_string_valid(sym, str))
497 prop = sym_get_range_prop(sym);
500 val = strtol(str, NULL, 16);
501 return val >= strtol(prop->expr->left.sym->name, NULL, 16) &&
502 val <= strtol(prop->expr->right.sym->name, NULL, 16);
507 return sym_tristate_within_range(sym, yes);
509 return sym_tristate_within_range(sym, mod);
511 return sym_tristate_within_range(sym, no);
519 bool sym_set_string_value(struct symbol *sym, const char *newval)
530 return sym_set_tristate_value(sym, yes);
532 return sym_set_tristate_value(sym, mod);
534 return sym_set_tristate_value(sym, no);
541 if (!sym_string_within_range(sym, newval))
544 if (sym->flags & SYMBOL_NEW) {
545 sym->flags &= ~SYMBOL_NEW;
546 sym_set_changed(sym);
549 oldval = sym->user.val;
550 size = strlen(newval) + 1;
551 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
553 sym->user.val = val = malloc(size);
556 } else if (!oldval || strcmp(oldval, newval))
557 sym->user.val = val = malloc(size);
562 free((void *)oldval);
563 sym_clear_all_valid();
568 const char *sym_get_string_value(struct symbol *sym)
575 val = sym_get_tristate_value(sym);
588 return (const char *)sym->curr.val;
591 bool sym_is_changable(struct symbol *sym)
593 return sym->visible > sym->rev_dep.tri;
596 struct symbol *sym_lookup(const char *name, int isconst)
598 struct symbol *symbol;
604 if (name[0] && !name[1]) {
606 case 'y': return &symbol_yes;
607 case 'm': return &symbol_mod;
608 case 'n': return &symbol_no;
611 for (ptr = name; *ptr; ptr++)
615 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
616 if (!strcmp(symbol->name, name)) {
617 if ((isconst && symbol->flags & SYMBOL_CONST) ||
618 (!isconst && !(symbol->flags & SYMBOL_CONST)))
622 new_name = strdup(name);
628 symbol = malloc(sizeof(*symbol));
629 memset(symbol, 0, sizeof(*symbol));
630 symbol->name = new_name;
631 symbol->type = S_UNKNOWN;
632 symbol->flags = SYMBOL_NEW;
634 symbol->flags |= SYMBOL_CONST;
636 symbol->next = symbol_hash[hash];
637 symbol_hash[hash] = symbol;
642 struct symbol *sym_find(const char *name)
644 struct symbol *symbol = NULL;
651 if (name[0] && !name[1]) {
653 case 'y': return &symbol_yes;
654 case 'm': return &symbol_mod;
655 case 'n': return &symbol_no;
658 for (ptr = name; *ptr; ptr++)
662 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
663 if (!strcmp(symbol->name, name) &&
664 !(symbol->flags & SYMBOL_CONST))
671 struct symbol **sym_re_search(const char *pattern)
673 struct symbol *sym, **sym_arr = NULL;
679 if (strlen(pattern) == 0)
681 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
684 for_all_symbols(i, sym) {
685 if (sym->flags & SYMBOL_CONST || !sym->name)
687 if (regexec(&re, sym->name, 0, NULL, 0))
689 if (cnt + 1 >= size) {
692 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
698 sym_arr[cnt++] = sym;
708 struct symbol *sym_check_deps(struct symbol *sym);
710 static struct symbol *sym_check_expr_deps(struct expr *e)
719 sym = sym_check_expr_deps(e->left.expr);
722 return sym_check_expr_deps(e->right.expr);
724 return sym_check_expr_deps(e->left.expr);
727 sym = sym_check_deps(e->left.sym);
730 return sym_check_deps(e->right.sym);
732 return sym_check_deps(e->left.sym);
736 printf("Oops! How to check %d?\n", e->type);
740 struct symbol *sym_check_deps(struct symbol *sym)
743 struct property *prop;
745 if (sym->flags & SYMBOL_CHECK) {
746 printf("Warning! Found recursive dependency: %s", sym->name);
749 if (sym->flags & SYMBOL_CHECKED)
752 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
753 sym2 = sym_check_expr_deps(sym->rev_dep.expr);
757 for (prop = sym->prop; prop; prop = prop->next) {
758 if (prop->type == P_CHOICE || prop->type == P_SELECT)
760 sym2 = sym_check_expr_deps(prop->visible.expr);
763 if (prop->type != P_DEFAULT || sym_is_choice(sym))
765 sym2 = sym_check_expr_deps(prop->expr);
771 printf(" %s", sym->name);
777 sym->flags &= ~SYMBOL_CHECK;
781 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
783 struct property *prop;
784 struct property **propp;
786 prop = malloc(sizeof(*prop));
787 memset(prop, 0, sizeof(*prop));
790 prop->file = current_file;
791 prop->lineno = zconf_lineno();
793 /* append property to the prop list of symbol */
795 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
803 struct symbol *prop_get_symbol(struct property *prop)
805 if (prop->expr && (prop->expr->type == E_SYMBOL ||
806 prop->expr->type == E_CHOICE))
807 return prop->expr->left.sym;
811 const char *prop_get_type_name(enum prop_type type)