Masahiro Yamada | 0c87410 | 2018-12-18 21:13:35 +0900 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | */ |
| 5 | |
Boris Kolpackov | 78cb090 | 2020-11-23 11:38:18 +0200 | [diff] [blame] | 6 | #include <sys/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | #include <ctype.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <string.h> |
| 10 | #include <regex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include "lkc.h" |
| 13 | |
| 14 | struct symbol symbol_yes = { |
| 15 | .name = "y", |
| 16 | .curr = { "y", yes }, |
Roman Zippel | c0e150ac | 2006-06-08 22:12:40 -0700 | [diff] [blame] | 17 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
Masahiro Yamada | d41809f | 2020-07-29 12:18:37 +0900 | [diff] [blame] | 18 | }; |
| 19 | |
| 20 | struct symbol symbol_mod = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | .name = "m", |
| 22 | .curr = { "m", mod }, |
Roman Zippel | c0e150ac | 2006-06-08 22:12:40 -0700 | [diff] [blame] | 23 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
Masahiro Yamada | d41809f | 2020-07-29 12:18:37 +0900 | [diff] [blame] | 24 | }; |
| 25 | |
| 26 | struct symbol symbol_no = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | .name = "n", |
| 28 | .curr = { "n", no }, |
Roman Zippel | c0e150ac | 2006-06-08 22:12:40 -0700 | [diff] [blame] | 29 | .flags = SYMBOL_CONST|SYMBOL_VALID, |
Masahiro Yamada | d41809f | 2020-07-29 12:18:37 +0900 | [diff] [blame] | 30 | }; |
| 31 | |
| 32 | static struct symbol symbol_empty = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | .name = "", |
| 34 | .curr = { "", no }, |
| 35 | .flags = SYMBOL_VALID, |
| 36 | }; |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | struct symbol *modules_sym; |
Masahiro Yamada | d41809f | 2020-07-29 12:18:37 +0900 | [diff] [blame] | 39 | static tristate modules_val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | enum symbol_type sym_get_type(struct symbol *sym) |
| 42 | { |
| 43 | enum symbol_type type = sym->type; |
| 44 | |
| 45 | if (type == S_TRISTATE) { |
| 46 | if (sym_is_choice_value(sym) && sym->visible == yes) |
| 47 | type = S_BOOLEAN; |
| 48 | else if (modules_val == no) |
| 49 | type = S_BOOLEAN; |
| 50 | } |
| 51 | return type; |
| 52 | } |
| 53 | |
| 54 | const char *sym_type_name(enum symbol_type type) |
| 55 | { |
| 56 | switch (type) { |
| 57 | case S_BOOLEAN: |
Masahiro Yamada | b92d804 | 2017-12-16 00:38:02 +0900 | [diff] [blame] | 58 | return "bool"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | case S_TRISTATE: |
| 60 | return "tristate"; |
| 61 | case S_INT: |
| 62 | return "integer"; |
| 63 | case S_HEX: |
| 64 | return "hex"; |
| 65 | case S_STRING: |
| 66 | return "string"; |
| 67 | case S_UNKNOWN: |
| 68 | return "unknown"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | } |
| 70 | return "???"; |
| 71 | } |
| 72 | |
| 73 | struct property *sym_get_choice_prop(struct symbol *sym) |
| 74 | { |
| 75 | struct property *prop; |
| 76 | |
| 77 | for_all_choices(sym, prop) |
| 78 | return prop; |
| 79 | return NULL; |
| 80 | } |
| 81 | |
Michal Marek | ad8d40c | 2015-02-24 16:37:13 +0100 | [diff] [blame] | 82 | static struct property *sym_get_default_prop(struct symbol *sym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { |
| 84 | struct property *prop; |
| 85 | |
| 86 | for_all_defaults(sym, prop) { |
| 87 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
| 88 | if (prop->visible.tri != no) |
| 89 | return prop; |
| 90 | } |
| 91 | return NULL; |
| 92 | } |
| 93 | |
Masahiro Yamada | 558e78e | 2018-12-21 17:33:04 +0900 | [diff] [blame] | 94 | struct property *sym_get_range_prop(struct symbol *sym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | { |
| 96 | struct property *prop; |
| 97 | |
| 98 | for_all_properties(sym, prop, P_RANGE) { |
| 99 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
| 100 | if (prop->visible.tri != no) |
| 101 | return prop; |
| 102 | } |
| 103 | return NULL; |
| 104 | } |
| 105 | |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 106 | static long long sym_get_range_val(struct symbol *sym, int base) |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 107 | { |
| 108 | sym_calc_value(sym); |
| 109 | switch (sym->type) { |
| 110 | case S_INT: |
| 111 | base = 10; |
| 112 | break; |
| 113 | case S_HEX: |
| 114 | base = 16; |
| 115 | break; |
| 116 | default: |
| 117 | break; |
| 118 | } |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 119 | return strtoll(sym->curr.val, NULL, base); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static void sym_validate_range(struct symbol *sym) |
| 123 | { |
| 124 | struct property *prop; |
Masahiro Yamada | 94e5ed1 | 2023-11-15 13:16:53 +0900 | [diff] [blame^] | 125 | struct symbol *range_sym; |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 126 | int base; |
| 127 | long long val, val2; |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 128 | |
| 129 | switch (sym->type) { |
| 130 | case S_INT: |
| 131 | base = 10; |
| 132 | break; |
| 133 | case S_HEX: |
| 134 | base = 16; |
| 135 | break; |
| 136 | default: |
| 137 | return; |
| 138 | } |
| 139 | prop = sym_get_range_prop(sym); |
| 140 | if (!prop) |
| 141 | return; |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 142 | val = strtoll(sym->curr.val, NULL, base); |
Masahiro Yamada | 94e5ed1 | 2023-11-15 13:16:53 +0900 | [diff] [blame^] | 143 | range_sym = prop->expr->left.sym; |
| 144 | val2 = sym_get_range_val(range_sym, base); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 145 | if (val >= val2) { |
Masahiro Yamada | 94e5ed1 | 2023-11-15 13:16:53 +0900 | [diff] [blame^] | 146 | range_sym = prop->expr->right.sym; |
| 147 | val2 = sym_get_range_val(range_sym, base); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 148 | if (val <= val2) |
| 149 | return; |
| 150 | } |
Masahiro Yamada | 94e5ed1 | 2023-11-15 13:16:53 +0900 | [diff] [blame^] | 151 | sym->curr.val = range_sym->curr.val; |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 152 | } |
| 153 | |
Michal Marek | ad8d40c | 2015-02-24 16:37:13 +0100 | [diff] [blame] | 154 | static void sym_set_changed(struct symbol *sym) |
| 155 | { |
| 156 | struct property *prop; |
| 157 | |
| 158 | sym->flags |= SYMBOL_CHANGED; |
| 159 | for (prop = sym->prop; prop; prop = prop->next) { |
| 160 | if (prop->menu) |
| 161 | prop->menu->flags |= MENU_CHANGED; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | static void sym_set_all_changed(void) |
| 166 | { |
| 167 | struct symbol *sym; |
| 168 | int i; |
| 169 | |
| 170 | for_all_symbols(i, sym) |
| 171 | sym_set_changed(sym); |
| 172 | } |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | static void sym_calc_visibility(struct symbol *sym) |
| 175 | { |
| 176 | struct property *prop; |
Dirk Gouders | fa64e5f | 2016-04-29 10:24:52 +0200 | [diff] [blame] | 177 | struct symbol *choice_sym = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | tristate tri; |
| 179 | |
| 180 | /* any prompt visible? */ |
| 181 | tri = no; |
Dirk Gouders | fa64e5f | 2016-04-29 10:24:52 +0200 | [diff] [blame] | 182 | |
| 183 | if (sym_is_choice_value(sym)) |
| 184 | choice_sym = prop_get_symbol(sym_get_choice_prop(sym)); |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | for_all_prompts(sym, prop) { |
| 187 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
Dirk Gouders | fa64e5f | 2016-04-29 10:24:52 +0200 | [diff] [blame] | 188 | /* |
| 189 | * Tristate choice_values with visibility 'mod' are |
| 190 | * not visible if the corresponding choice's value is |
| 191 | * 'yes'. |
| 192 | */ |
| 193 | if (choice_sym && sym->type == S_TRISTATE && |
| 194 | prop->visible.tri == mod && choice_sym->curr.tri == yes) |
| 195 | prop->visible.tri = no; |
| 196 | |
Sam Ravnborg | d6ee357 | 2008-01-07 21:09:55 +0100 | [diff] [blame] | 197 | tri = EXPR_OR(tri, prop->visible.tri); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | } |
| 199 | if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) |
| 200 | tri = yes; |
| 201 | if (sym->visible != tri) { |
| 202 | sym->visible = tri; |
| 203 | sym_set_changed(sym); |
| 204 | } |
| 205 | if (sym_is_choice_value(sym)) |
| 206 | return; |
Catalin Marinas | 246cf9c | 2010-06-08 17:25:57 +0100 | [diff] [blame] | 207 | /* defaulting to "yes" if no explicit "depends on" are given */ |
| 208 | tri = yes; |
| 209 | if (sym->dir_dep.expr) |
| 210 | tri = expr_calc_value(sym->dir_dep.expr); |
Masahiro Yamada | f622f82 | 2018-03-13 18:56:07 +0900 | [diff] [blame] | 211 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) |
Catalin Marinas | 246cf9c | 2010-06-08 17:25:57 +0100 | [diff] [blame] | 212 | tri = yes; |
| 213 | if (sym->dir_dep.tri != tri) { |
| 214 | sym->dir_dep.tri = tri; |
| 215 | sym_set_changed(sym); |
| 216 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | tri = no; |
| 218 | if (sym->rev_dep.expr) |
| 219 | tri = expr_calc_value(sym->rev_dep.expr); |
| 220 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) |
| 221 | tri = yes; |
| 222 | if (sym->rev_dep.tri != tri) { |
| 223 | sym->rev_dep.tri = tri; |
| 224 | sym_set_changed(sym); |
| 225 | } |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 226 | tri = no; |
Masahiro Yamada | 3a9dd3e | 2020-03-02 15:23:40 +0900 | [diff] [blame] | 227 | if (sym->implied.expr) |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 228 | tri = expr_calc_value(sym->implied.expr); |
| 229 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) |
| 230 | tri = yes; |
| 231 | if (sym->implied.tri != tri) { |
| 232 | sym->implied.tri = tri; |
| 233 | sym_set_changed(sym); |
| 234 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | } |
| 236 | |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 237 | /* |
| 238 | * Find the default symbol for a choice. |
| 239 | * First try the default values for the choice symbol |
| 240 | * Next locate the first visible choice value |
| 241 | * Return NULL if none was found |
| 242 | */ |
| 243 | struct symbol *sym_choice_default(struct symbol *sym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
| 245 | struct symbol *def_sym; |
| 246 | struct property *prop; |
| 247 | struct expr *e; |
| 248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* any of the defaults visible? */ |
| 250 | for_all_defaults(sym, prop) { |
| 251 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
| 252 | if (prop->visible.tri == no) |
| 253 | continue; |
| 254 | def_sym = prop_get_symbol(prop); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | if (def_sym->visible != no) |
| 256 | return def_sym; |
| 257 | } |
| 258 | |
| 259 | /* just get the first visible value */ |
| 260 | prop = sym_get_choice_prop(sym); |
Jan Beulich | 0a28c47 | 2010-06-30 13:11:01 +0100 | [diff] [blame] | 261 | expr_list_for_each_sym(prop->expr, e, def_sym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | if (def_sym->visible != no) |
| 263 | return def_sym; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 265 | /* failed to locate any defaults */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | return NULL; |
| 267 | } |
| 268 | |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 269 | static struct symbol *sym_calc_choice(struct symbol *sym) |
| 270 | { |
| 271 | struct symbol *def_sym; |
| 272 | struct property *prop; |
| 273 | struct expr *e; |
Arnaud Lacombe | 5d09598 | 2012-01-23 17:29:05 -0500 | [diff] [blame] | 274 | int flags; |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 275 | |
| 276 | /* first calculate all choice values' visibilities */ |
Arnaud Lacombe | 5d09598 | 2012-01-23 17:29:05 -0500 | [diff] [blame] | 277 | flags = sym->flags; |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 278 | prop = sym_get_choice_prop(sym); |
Arnaud Lacombe | 5d09598 | 2012-01-23 17:29:05 -0500 | [diff] [blame] | 279 | expr_list_for_each_sym(prop->expr, e, def_sym) { |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 280 | sym_calc_visibility(def_sym); |
Arnaud Lacombe | 5d09598 | 2012-01-23 17:29:05 -0500 | [diff] [blame] | 281 | if (def_sym->visible != no) |
| 282 | flags &= def_sym->flags; |
| 283 | } |
| 284 | |
| 285 | sym->flags &= flags | ~SYMBOL_DEF_USER; |
Sam Ravnborg | c252147 | 2010-07-31 23:35:32 +0200 | [diff] [blame] | 286 | |
| 287 | /* is the user choice visible? */ |
| 288 | def_sym = sym->def[S_DEF_USER].val; |
| 289 | if (def_sym && def_sym->visible != no) |
| 290 | return def_sym; |
| 291 | |
| 292 | def_sym = sym_choice_default(sym); |
| 293 | |
| 294 | if (def_sym == NULL) |
| 295 | /* no choice? reset tristate value */ |
| 296 | sym->curr.tri = no; |
| 297 | |
| 298 | return def_sym; |
| 299 | } |
| 300 | |
Masahiro Yamada | f8f69dc | 2018-03-13 18:56:08 +0900 | [diff] [blame] | 301 | static void sym_warn_unmet_dep(struct symbol *sym) |
| 302 | { |
| 303 | struct gstr gs = str_new(); |
| 304 | |
| 305 | str_printf(&gs, |
| 306 | "\nWARNING: unmet direct dependencies detected for %s\n", |
| 307 | sym->name); |
| 308 | str_printf(&gs, |
| 309 | " Depends on [%c]: ", |
| 310 | sym->dir_dep.tri == mod ? 'm' : 'n'); |
| 311 | expr_gstr_print(sym->dir_dep.expr, &gs); |
| 312 | str_printf(&gs, "\n"); |
| 313 | |
| 314 | expr_gstr_print_revdep(sym->rev_dep.expr, &gs, yes, |
| 315 | " Selected by [y]:\n"); |
| 316 | expr_gstr_print_revdep(sym->rev_dep.expr, &gs, mod, |
| 317 | " Selected by [m]:\n"); |
| 318 | |
| 319 | fputs(str_get(&gs), stderr); |
| 320 | } |
| 321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | void sym_calc_value(struct symbol *sym) |
| 323 | { |
| 324 | struct symbol_value newval, oldval; |
| 325 | struct property *prop; |
| 326 | struct expr *e; |
| 327 | |
| 328 | if (!sym) |
| 329 | return; |
| 330 | |
| 331 | if (sym->flags & SYMBOL_VALID) |
| 332 | return; |
Arve Hjønnevåg | fbe98bb9 | 2013-06-06 20:37:00 -0700 | [diff] [blame] | 333 | |
| 334 | if (sym_is_choice_value(sym) && |
| 335 | sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES) { |
| 336 | sym->flags &= ~SYMBOL_NEED_SET_CHOICE_VALUES; |
| 337 | prop = sym_get_choice_prop(sym); |
| 338 | sym_calc_value(prop_get_symbol(prop)); |
| 339 | } |
| 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | sym->flags |= SYMBOL_VALID; |
| 342 | |
| 343 | oldval = sym->curr; |
| 344 | |
| 345 | switch (sym->type) { |
| 346 | case S_INT: |
| 347 | case S_HEX: |
| 348 | case S_STRING: |
| 349 | newval = symbol_empty.curr; |
| 350 | break; |
| 351 | case S_BOOLEAN: |
| 352 | case S_TRISTATE: |
| 353 | newval = symbol_no.curr; |
| 354 | break; |
| 355 | default: |
| 356 | sym->curr.val = sym->name; |
| 357 | sym->curr.tri = no; |
| 358 | return; |
| 359 | } |
Masahiro Yamada | cb67ab2 | 2018-02-06 09:34:42 +0900 | [diff] [blame] | 360 | sym->flags &= ~SYMBOL_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | sym_calc_visibility(sym); |
| 363 | |
Masahiro Yamada | cb67ab2 | 2018-02-06 09:34:42 +0900 | [diff] [blame] | 364 | if (sym->visible != no) |
| 365 | sym->flags |= SYMBOL_WRITE; |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | /* set default if recursively called */ |
| 368 | sym->curr = newval; |
| 369 | |
| 370 | switch (sym_get_type(sym)) { |
| 371 | case S_BOOLEAN: |
| 372 | case S_TRISTATE: |
| 373 | if (sym_is_choice_value(sym) && sym->visible == yes) { |
| 374 | prop = sym_get_choice_prop(sym); |
| 375 | newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 376 | } else { |
| 377 | if (sym->visible != no) { |
| 378 | /* if the symbol is visible use the user value |
| 379 | * if available, otherwise try the default value |
| 380 | */ |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 381 | if (sym_has_value(sym)) { |
| 382 | newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri, |
| 383 | sym->visible); |
| 384 | goto calc_newval; |
| 385 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | } |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 387 | if (sym->rev_dep.tri != no) |
| 388 | sym->flags |= SYMBOL_WRITE; |
| 389 | if (!sym_is_choice(sym)) { |
| 390 | prop = sym_get_default_prop(sym); |
| 391 | if (prop) { |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 392 | newval.tri = EXPR_AND(expr_calc_value(prop->expr), |
| 393 | prop->visible.tri); |
Ulf Magnusson | f467c56 | 2018-02-23 12:49:01 +0100 | [diff] [blame] | 394 | if (newval.tri != no) |
| 395 | sym->flags |= SYMBOL_WRITE; |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 396 | } |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 397 | if (sym->implied.tri != no) { |
| 398 | sym->flags |= SYMBOL_WRITE; |
| 399 | newval.tri = EXPR_OR(newval.tri, sym->implied.tri); |
Masahiro Yamada | 3a9dd3e | 2020-03-02 15:23:40 +0900 | [diff] [blame] | 400 | newval.tri = EXPR_AND(newval.tri, |
| 401 | sym->dir_dep.tri); |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 402 | } |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 403 | } |
| 404 | calc_newval: |
Masahiro Yamada | f8f69dc | 2018-03-13 18:56:08 +0900 | [diff] [blame] | 405 | if (sym->dir_dep.tri < sym->rev_dep.tri) |
| 406 | sym_warn_unmet_dep(sym); |
Roman Zippel | 587c906 | 2008-02-11 21:13:47 +0100 | [diff] [blame] | 407 | newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
Masahiro Yamada | def2fbf | 2020-03-02 15:23:39 +0900 | [diff] [blame] | 409 | if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | newval.tri = yes; |
| 411 | break; |
| 412 | case S_STRING: |
| 413 | case S_HEX: |
| 414 | case S_INT: |
Masahiro Yamada | cb67ab2 | 2018-02-06 09:34:42 +0900 | [diff] [blame] | 415 | if (sym->visible != no && sym_has_value(sym)) { |
| 416 | newval.val = sym->def[S_DEF_USER].val; |
| 417 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | } |
| 419 | prop = sym_get_default_prop(sym); |
| 420 | if (prop) { |
| 421 | struct symbol *ds = prop_get_symbol(prop); |
| 422 | if (ds) { |
| 423 | sym->flags |= SYMBOL_WRITE; |
| 424 | sym_calc_value(ds); |
| 425 | newval.val = ds->curr.val; |
| 426 | } |
| 427 | } |
| 428 | break; |
| 429 | default: |
| 430 | ; |
| 431 | } |
| 432 | |
| 433 | sym->curr = newval; |
| 434 | if (sym_is_choice(sym) && newval.tri == yes) |
| 435 | sym->curr.val = sym_calc_choice(sym); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 436 | sym_validate_range(sym); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
Roman Zippel | face437 | 2006-06-08 22:12:45 -0700 | [diff] [blame] | 438 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | sym_set_changed(sym); |
Roman Zippel | face437 | 2006-06-08 22:12:45 -0700 | [diff] [blame] | 440 | if (modules_sym == sym) { |
| 441 | sym_set_all_changed(); |
| 442 | modules_val = modules_sym->curr.tri; |
| 443 | } |
| 444 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | if (sym_is_choice(sym)) { |
Roman Zippel | 7a96292 | 2008-01-14 04:50:23 +0100 | [diff] [blame] | 447 | struct symbol *choice_sym; |
Roman Zippel | 7a96292 | 2008-01-14 04:50:23 +0100 | [diff] [blame] | 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | prop = sym_get_choice_prop(sym); |
Roman Zippel | 7a96292 | 2008-01-14 04:50:23 +0100 | [diff] [blame] | 450 | expr_list_for_each_sym(prop->expr, e, choice_sym) { |
Jan Beulich | 0a28c47 | 2010-06-30 13:11:01 +0100 | [diff] [blame] | 451 | if ((sym->flags & SYMBOL_WRITE) && |
| 452 | choice_sym->visible != no) |
| 453 | choice_sym->flags |= SYMBOL_WRITE; |
| 454 | if (sym->flags & SYMBOL_CHANGED) |
Roman Zippel | 7a96292 | 2008-01-14 04:50:23 +0100 | [diff] [blame] | 455 | sym_set_changed(choice_sym); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
| 457 | } |
Roman Zippel | 5a1aa8a | 2008-02-29 05:11:50 +0100 | [diff] [blame] | 458 | |
Dirk Gouders | 693359f | 2018-07-03 14:43:31 +0200 | [diff] [blame] | 459 | if (sym->flags & SYMBOL_NO_WRITE) |
Roman Zippel | 5a1aa8a | 2008-02-29 05:11:50 +0100 | [diff] [blame] | 460 | sym->flags &= ~SYMBOL_WRITE; |
Arve Hjønnevåg | fbe98bb9 | 2013-06-06 20:37:00 -0700 | [diff] [blame] | 461 | |
| 462 | if (sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES) |
| 463 | set_all_choice_values(sym); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | } |
| 465 | |
| 466 | void sym_clear_all_valid(void) |
| 467 | { |
| 468 | struct symbol *sym; |
| 469 | int i; |
| 470 | |
| 471 | for_all_symbols(i, sym) |
| 472 | sym->flags &= ~SYMBOL_VALID; |
Masahiro Yamada | 5ee5465 | 2021-04-10 15:57:22 +0900 | [diff] [blame] | 473 | conf_set_changed(true); |
Markus Elfring | 35ffd08 | 2015-07-07 21:48:23 +0200 | [diff] [blame] | 474 | sym_calc_value(modules_sym); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
| 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | bool sym_tristate_within_range(struct symbol *sym, tristate val) |
| 478 | { |
| 479 | int type = sym_get_type(sym); |
| 480 | |
| 481 | if (sym->visible == no) |
| 482 | return false; |
| 483 | |
| 484 | if (type != S_BOOLEAN && type != S_TRISTATE) |
| 485 | return false; |
| 486 | |
| 487 | if (type == S_BOOLEAN && val == mod) |
| 488 | return false; |
| 489 | if (sym->visible <= sym->rev_dep.tri) |
| 490 | return false; |
| 491 | if (sym_is_choice_value(sym) && sym->visible == yes) |
| 492 | return val == yes; |
| 493 | return val >= sym->rev_dep.tri && val <= sym->visible; |
| 494 | } |
| 495 | |
| 496 | bool sym_set_tristate_value(struct symbol *sym, tristate val) |
| 497 | { |
| 498 | tristate oldval = sym_get_tristate_value(sym); |
| 499 | |
| 500 | if (oldval != val && !sym_tristate_within_range(sym, val)) |
| 501 | return false; |
| 502 | |
Roman Zippel | 669bfad9 | 2006-06-08 22:12:42 -0700 | [diff] [blame] | 503 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
| 504 | sym->flags |= SYMBOL_DEF_USER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | sym_set_changed(sym); |
| 506 | } |
Roman Zippel | 3f23ca2 | 2005-11-08 21:34:48 -0800 | [diff] [blame] | 507 | /* |
| 508 | * setting a choice value also resets the new flag of the choice |
| 509 | * symbol and all other choice values. |
| 510 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | if (sym_is_choice_value(sym) && val == yes) { |
| 512 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
Roman Zippel | 3f23ca2 | 2005-11-08 21:34:48 -0800 | [diff] [blame] | 513 | struct property *prop; |
| 514 | struct expr *e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Roman Zippel | 0c1822e | 2006-06-08 22:12:41 -0700 | [diff] [blame] | 516 | cs->def[S_DEF_USER].val = sym; |
Roman Zippel | 669bfad9 | 2006-06-08 22:12:42 -0700 | [diff] [blame] | 517 | cs->flags |= SYMBOL_DEF_USER; |
Roman Zippel | 3f23ca2 | 2005-11-08 21:34:48 -0800 | [diff] [blame] | 518 | prop = sym_get_choice_prop(cs); |
| 519 | for (e = prop->expr; e; e = e->left.expr) { |
| 520 | if (e->right.sym->visible != no) |
Roman Zippel | 669bfad9 | 2006-06-08 22:12:42 -0700 | [diff] [blame] | 521 | e->right.sym->flags |= SYMBOL_DEF_USER; |
Roman Zippel | 3f23ca2 | 2005-11-08 21:34:48 -0800 | [diff] [blame] | 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Roman Zippel | 0c1822e | 2006-06-08 22:12:41 -0700 | [diff] [blame] | 525 | sym->def[S_DEF_USER].tri = val; |
Roman Zippel | face437 | 2006-06-08 22:12:45 -0700 | [diff] [blame] | 526 | if (oldval != val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | sym_clear_all_valid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
| 529 | return true; |
| 530 | } |
| 531 | |
| 532 | tristate sym_toggle_tristate_value(struct symbol *sym) |
| 533 | { |
| 534 | tristate oldval, newval; |
| 535 | |
| 536 | oldval = newval = sym_get_tristate_value(sym); |
| 537 | do { |
| 538 | switch (newval) { |
| 539 | case no: |
| 540 | newval = mod; |
| 541 | break; |
| 542 | case mod: |
| 543 | newval = yes; |
| 544 | break; |
| 545 | case yes: |
| 546 | newval = no; |
| 547 | break; |
| 548 | } |
| 549 | if (sym_set_tristate_value(sym, newval)) |
| 550 | break; |
| 551 | } while (oldval != newval); |
| 552 | return newval; |
| 553 | } |
| 554 | |
| 555 | bool sym_string_valid(struct symbol *sym, const char *str) |
| 556 | { |
| 557 | signed char ch; |
| 558 | |
| 559 | switch (sym->type) { |
| 560 | case S_STRING: |
| 561 | return true; |
| 562 | case S_INT: |
| 563 | ch = *str++; |
| 564 | if (ch == '-') |
| 565 | ch = *str++; |
| 566 | if (!isdigit(ch)) |
| 567 | return false; |
| 568 | if (ch == '0' && *str != 0) |
| 569 | return false; |
| 570 | while ((ch = *str++)) { |
| 571 | if (!isdigit(ch)) |
| 572 | return false; |
| 573 | } |
| 574 | return true; |
| 575 | case S_HEX: |
| 576 | if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) |
| 577 | str += 2; |
| 578 | ch = *str++; |
| 579 | do { |
| 580 | if (!isxdigit(ch)) |
| 581 | return false; |
| 582 | } while ((ch = *str++)); |
| 583 | return true; |
| 584 | case S_BOOLEAN: |
| 585 | case S_TRISTATE: |
| 586 | switch (str[0]) { |
| 587 | case 'y': case 'Y': |
| 588 | case 'm': case 'M': |
| 589 | case 'n': case 'N': |
| 590 | return true; |
| 591 | } |
| 592 | return false; |
| 593 | default: |
| 594 | return false; |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | bool sym_string_within_range(struct symbol *sym, const char *str) |
| 599 | { |
| 600 | struct property *prop; |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 601 | long long val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | switch (sym->type) { |
| 604 | case S_STRING: |
| 605 | return sym_string_valid(sym, str); |
| 606 | case S_INT: |
| 607 | if (!sym_string_valid(sym, str)) |
| 608 | return false; |
| 609 | prop = sym_get_range_prop(sym); |
| 610 | if (!prop) |
| 611 | return true; |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 612 | val = strtoll(str, NULL, 10); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 613 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
| 614 | val <= sym_get_range_val(prop->expr->right.sym, 10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | case S_HEX: |
| 616 | if (!sym_string_valid(sym, str)) |
| 617 | return false; |
| 618 | prop = sym_get_range_prop(sym); |
| 619 | if (!prop) |
| 620 | return true; |
Kees Cook | 129784a | 2013-07-18 11:32:01 -0700 | [diff] [blame] | 621 | val = strtoll(str, NULL, 16); |
Roman Zippel | 4cf3cbe | 2005-11-08 21:34:49 -0800 | [diff] [blame] | 622 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
| 623 | val <= sym_get_range_val(prop->expr->right.sym, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | case S_BOOLEAN: |
| 625 | case S_TRISTATE: |
| 626 | switch (str[0]) { |
| 627 | case 'y': case 'Y': |
| 628 | return sym_tristate_within_range(sym, yes); |
| 629 | case 'm': case 'M': |
| 630 | return sym_tristate_within_range(sym, mod); |
| 631 | case 'n': case 'N': |
| 632 | return sym_tristate_within_range(sym, no); |
| 633 | } |
| 634 | return false; |
| 635 | default: |
| 636 | return false; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | bool sym_set_string_value(struct symbol *sym, const char *newval) |
| 641 | { |
| 642 | const char *oldval; |
| 643 | char *val; |
| 644 | int size; |
| 645 | |
| 646 | switch (sym->type) { |
| 647 | case S_BOOLEAN: |
| 648 | case S_TRISTATE: |
| 649 | switch (newval[0]) { |
| 650 | case 'y': case 'Y': |
| 651 | return sym_set_tristate_value(sym, yes); |
| 652 | case 'm': case 'M': |
| 653 | return sym_set_tristate_value(sym, mod); |
| 654 | case 'n': case 'N': |
| 655 | return sym_set_tristate_value(sym, no); |
| 656 | } |
| 657 | return false; |
| 658 | default: |
| 659 | ; |
| 660 | } |
| 661 | |
| 662 | if (!sym_string_within_range(sym, newval)) |
| 663 | return false; |
| 664 | |
Roman Zippel | 669bfad9 | 2006-06-08 22:12:42 -0700 | [diff] [blame] | 665 | if (!(sym->flags & SYMBOL_DEF_USER)) { |
| 666 | sym->flags |= SYMBOL_DEF_USER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | sym_set_changed(sym); |
| 668 | } |
| 669 | |
Roman Zippel | 0c1822e | 2006-06-08 22:12:41 -0700 | [diff] [blame] | 670 | oldval = sym->def[S_DEF_USER].val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | size = strlen(newval) + 1; |
| 672 | if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { |
| 673 | size += 2; |
Alan Cox | 177acf7 | 2012-11-06 14:32:08 +0000 | [diff] [blame] | 674 | sym->def[S_DEF_USER].val = val = xmalloc(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | *val++ = '0'; |
| 676 | *val++ = 'x'; |
| 677 | } else if (!oldval || strcmp(oldval, newval)) |
Alan Cox | 177acf7 | 2012-11-06 14:32:08 +0000 | [diff] [blame] | 678 | sym->def[S_DEF_USER].val = val = xmalloc(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | else |
| 680 | return true; |
| 681 | |
| 682 | strcpy(val, newval); |
| 683 | free((void *)oldval); |
| 684 | sym_clear_all_valid(); |
| 685 | |
| 686 | return true; |
| 687 | } |
| 688 | |
Sam Ravnborg | 7cf3d73 | 2010-07-31 23:35:34 +0200 | [diff] [blame] | 689 | /* |
| 690 | * Find the default value associated to a symbol. |
| 691 | * For tristate symbol handle the modules=n case |
| 692 | * in which case "m" becomes "y". |
| 693 | * If the symbol does not have any default then fallback |
| 694 | * to the fixed default values. |
| 695 | */ |
| 696 | const char *sym_get_string_default(struct symbol *sym) |
| 697 | { |
| 698 | struct property *prop; |
| 699 | struct symbol *ds; |
| 700 | const char *str; |
| 701 | tristate val; |
| 702 | |
| 703 | sym_calc_visibility(sym); |
| 704 | sym_calc_value(modules_sym); |
| 705 | val = symbol_no.curr.tri; |
| 706 | str = symbol_empty.curr.val; |
| 707 | |
| 708 | /* If symbol has a default value look it up */ |
| 709 | prop = sym_get_default_prop(sym); |
| 710 | if (prop != NULL) { |
| 711 | switch (sym->type) { |
| 712 | case S_BOOLEAN: |
| 713 | case S_TRISTATE: |
Arnaud Lacombe | 579fb8e | 2010-12-05 01:41:16 -0500 | [diff] [blame] | 714 | /* The visibility may limit the value from yes => mod */ |
Sam Ravnborg | 7cf3d73 | 2010-07-31 23:35:34 +0200 | [diff] [blame] | 715 | val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); |
| 716 | break; |
| 717 | default: |
| 718 | /* |
| 719 | * The following fails to handle the situation |
| 720 | * where a default value is further limited by |
| 721 | * the valid range. |
| 722 | */ |
| 723 | ds = prop_get_symbol(prop); |
| 724 | if (ds != NULL) { |
| 725 | sym_calc_value(ds); |
| 726 | str = (const char *)ds->curr.val; |
| 727 | } |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | /* Handle select statements */ |
| 732 | val = EXPR_OR(val, sym->rev_dep.tri); |
| 733 | |
| 734 | /* transpose mod to yes if modules are not enabled */ |
| 735 | if (val == mod) |
| 736 | if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no) |
| 737 | val = yes; |
| 738 | |
| 739 | /* transpose mod to yes if type is bool */ |
| 740 | if (sym->type == S_BOOLEAN && val == mod) |
| 741 | val = yes; |
| 742 | |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 743 | /* adjust the default value if this symbol is implied by another */ |
| 744 | if (val < sym->implied.tri) |
| 745 | val = sym->implied.tri; |
| 746 | |
Sam Ravnborg | 7cf3d73 | 2010-07-31 23:35:34 +0200 | [diff] [blame] | 747 | switch (sym->type) { |
| 748 | case S_BOOLEAN: |
| 749 | case S_TRISTATE: |
| 750 | switch (val) { |
| 751 | case no: return "n"; |
| 752 | case mod: return "m"; |
| 753 | case yes: return "y"; |
| 754 | } |
| 755 | case S_INT: |
| 756 | case S_HEX: |
| 757 | return str; |
| 758 | case S_STRING: |
| 759 | return str; |
Sam Ravnborg | 7cf3d73 | 2010-07-31 23:35:34 +0200 | [diff] [blame] | 760 | case S_UNKNOWN: |
| 761 | break; |
| 762 | } |
| 763 | return ""; |
| 764 | } |
| 765 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | const char *sym_get_string_value(struct symbol *sym) |
| 767 | { |
| 768 | tristate val; |
| 769 | |
| 770 | switch (sym->type) { |
| 771 | case S_BOOLEAN: |
| 772 | case S_TRISTATE: |
| 773 | val = sym_get_tristate_value(sym); |
| 774 | switch (val) { |
| 775 | case no: |
| 776 | return "n"; |
| 777 | case mod: |
Arnaud Lacombe | e54e692 | 2011-05-15 23:42:09 -0400 | [diff] [blame] | 778 | sym_calc_value(modules_sym); |
| 779 | return (modules_sym->curr.tri == no) ? "n" : "m"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | case yes: |
| 781 | return "y"; |
| 782 | } |
| 783 | break; |
| 784 | default: |
| 785 | ; |
| 786 | } |
| 787 | return (const char *)sym->curr.val; |
| 788 | } |
| 789 | |
Marco Ammon | baa23ec | 2019-07-04 12:50:41 +0200 | [diff] [blame] | 790 | bool sym_is_changeable(struct symbol *sym) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | { |
| 792 | return sym->visible > sym->rev_dep.tri; |
| 793 | } |
| 794 | |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 795 | static unsigned strhash(const char *s) |
| 796 | { |
| 797 | /* fnv32 hash */ |
| 798 | unsigned hash = 2166136261U; |
| 799 | for (; *s; s++) |
| 800 | hash = (hash ^ *s) * 0x01000193; |
| 801 | return hash; |
| 802 | } |
| 803 | |
Roman Zippel | 5a1aa8a | 2008-02-29 05:11:50 +0100 | [diff] [blame] | 804 | struct symbol *sym_lookup(const char *name, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | { |
| 806 | struct symbol *symbol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | char *new_name; |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 808 | int hash; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | |
| 810 | if (name) { |
| 811 | if (name[0] && !name[1]) { |
| 812 | switch (name[0]) { |
| 813 | case 'y': return &symbol_yes; |
| 814 | case 'm': return &symbol_mod; |
| 815 | case 'n': return &symbol_no; |
| 816 | } |
| 817 | } |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 818 | hash = strhash(name) % SYMBOL_HASHSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
| 820 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 821 | if (symbol->name && |
| 822 | !strcmp(symbol->name, name) && |
Roman Zippel | 5a1aa8a | 2008-02-29 05:11:50 +0100 | [diff] [blame] | 823 | (flags ? symbol->flags & flags |
| 824 | : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE)))) |
| 825 | return symbol; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } |
Masahiro Yamada | cd81fc8 | 2018-02-17 03:38:31 +0900 | [diff] [blame] | 827 | new_name = xstrdup(name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } else { |
| 829 | new_name = NULL; |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 830 | hash = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | } |
| 832 | |
Alan Cox | 177acf7 | 2012-11-06 14:32:08 +0000 | [diff] [blame] | 833 | symbol = xmalloc(sizeof(*symbol)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | memset(symbol, 0, sizeof(*symbol)); |
| 835 | symbol->name = new_name; |
| 836 | symbol->type = S_UNKNOWN; |
Masahiro Yamada | cfc6eea | 2020-04-14 00:33:20 +0900 | [diff] [blame] | 837 | symbol->flags = flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
| 839 | symbol->next = symbol_hash[hash]; |
| 840 | symbol_hash[hash] = symbol; |
| 841 | |
| 842 | return symbol; |
| 843 | } |
| 844 | |
| 845 | struct symbol *sym_find(const char *name) |
| 846 | { |
| 847 | struct symbol *symbol = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | int hash = 0; |
| 849 | |
| 850 | if (!name) |
| 851 | return NULL; |
| 852 | |
| 853 | if (name[0] && !name[1]) { |
| 854 | switch (name[0]) { |
| 855 | case 'y': return &symbol_yes; |
| 856 | case 'm': return &symbol_mod; |
| 857 | case 'n': return &symbol_no; |
| 858 | } |
| 859 | } |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 860 | hash = strhash(name) % SYMBOL_HASHSIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | |
| 862 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
Andi Kleen | e66f25d | 2010-01-13 17:02:44 +0100 | [diff] [blame] | 863 | if (symbol->name && |
| 864 | !strcmp(symbol->name, name) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | !(symbol->flags & SYMBOL_CONST)) |
| 866 | break; |
| 867 | } |
| 868 | |
| 869 | return symbol; |
| 870 | } |
| 871 | |
Arnaud Lacombe | e54e692 | 2011-05-15 23:42:09 -0400 | [diff] [blame] | 872 | const char *sym_escape_string_value(const char *in) |
| 873 | { |
| 874 | const char *p; |
| 875 | size_t reslen; |
| 876 | char *res; |
| 877 | size_t l; |
| 878 | |
| 879 | reslen = strlen(in) + strlen("\"\"") + 1; |
| 880 | |
| 881 | p = in; |
| 882 | for (;;) { |
| 883 | l = strcspn(p, "\"\\"); |
| 884 | p += l; |
| 885 | |
| 886 | if (p[0] == '\0') |
| 887 | break; |
| 888 | |
| 889 | reslen++; |
| 890 | p++; |
| 891 | } |
| 892 | |
Alan Cox | 177acf7 | 2012-11-06 14:32:08 +0000 | [diff] [blame] | 893 | res = xmalloc(reslen); |
Arnaud Lacombe | e54e692 | 2011-05-15 23:42:09 -0400 | [diff] [blame] | 894 | res[0] = '\0'; |
| 895 | |
| 896 | strcat(res, "\""); |
| 897 | |
| 898 | p = in; |
| 899 | for (;;) { |
| 900 | l = strcspn(p, "\"\\"); |
| 901 | strncat(res, p, l); |
| 902 | p += l; |
| 903 | |
| 904 | if (p[0] == '\0') |
| 905 | break; |
| 906 | |
| 907 | strcat(res, "\\"); |
| 908 | strncat(res, p++, 1); |
| 909 | } |
| 910 | |
| 911 | strcat(res, "\""); |
| 912 | return res; |
| 913 | } |
| 914 | |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 915 | struct sym_match { |
| 916 | struct symbol *sym; |
| 917 | off_t so, eo; |
| 918 | }; |
| 919 | |
| 920 | /* Compare matched symbols as thus: |
| 921 | * - first, symbols that match exactly |
| 922 | * - then, alphabetical sort |
| 923 | */ |
Yann E. MORIN | 803b351 | 2013-07-16 20:28:51 +0200 | [diff] [blame] | 924 | static int sym_rel_comp(const void *sym1, const void *sym2) |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 925 | { |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 926 | const struct sym_match *s1 = sym1; |
| 927 | const struct sym_match *s2 = sym2; |
Yann E. MORIN | 26e933e | 2013-07-13 15:09:43 +0200 | [diff] [blame] | 928 | int exact1, exact2; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 929 | |
| 930 | /* Exact match: |
| 931 | * - if matched length on symbol s1 is the length of that symbol, |
| 932 | * then this symbol should come first; |
| 933 | * - if matched length on symbol s2 is the length of that symbol, |
| 934 | * then this symbol should come first. |
| 935 | * Note: since the search can be a regexp, both symbols may match |
| 936 | * exactly; if this is the case, we can't decide which comes first, |
| 937 | * and we fallback to sorting alphabetically. |
| 938 | */ |
Yann E. MORIN | 26e933e | 2013-07-13 15:09:43 +0200 | [diff] [blame] | 939 | exact1 = (s1->eo - s1->so) == strlen(s1->sym->name); |
| 940 | exact2 = (s2->eo - s2->so) == strlen(s2->sym->name); |
| 941 | if (exact1 && !exact2) |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 942 | return -1; |
Yann E. MORIN | 26e933e | 2013-07-13 15:09:43 +0200 | [diff] [blame] | 943 | if (!exact1 && exact2) |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 944 | return 1; |
| 945 | |
| 946 | /* As a fallback, sort symbols alphabetically */ |
| 947 | return strcmp(s1->sym->name, s2->sym->name); |
| 948 | } |
| 949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | struct symbol **sym_re_search(const char *pattern) |
| 951 | { |
| 952 | struct symbol *sym, **sym_arr = NULL; |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 953 | struct sym_match *sym_match_arr = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | int i, cnt, size; |
| 955 | regex_t re; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 956 | regmatch_t match[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | cnt = size = 0; |
| 959 | /* Skip if empty */ |
| 960 | if (strlen(pattern) == 0) |
| 961 | return NULL; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 962 | if (regcomp(&re, pattern, REG_EXTENDED|REG_ICASE)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | return NULL; |
| 964 | |
| 965 | for_all_symbols(i, sym) { |
| 966 | if (sym->flags & SYMBOL_CONST || !sym->name) |
| 967 | continue; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 968 | if (regexec(&re, sym->name, 1, match, 0)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | continue; |
Yann E. MORIN | 1407f97a | 2013-07-16 20:32:33 +0200 | [diff] [blame] | 970 | if (cnt >= size) { |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 971 | void *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | size += 16; |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 973 | tmp = realloc(sym_match_arr, size * sizeof(struct sym_match)); |
Yann E. MORIN | 803b351 | 2013-07-16 20:28:51 +0200 | [diff] [blame] | 974 | if (!tmp) |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 975 | goto sym_re_search_free; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 976 | sym_match_arr = tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | } |
Li Zefan | da6df87 | 2010-03-19 14:57:47 +0800 | [diff] [blame] | 978 | sym_calc_value(sym); |
Yann E. MORIN | 803b351 | 2013-07-16 20:28:51 +0200 | [diff] [blame] | 979 | /* As regexec returned 0, we know we have a match, so |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 980 | * we can use match[0].rm_[se]o without further checks |
| 981 | */ |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 982 | sym_match_arr[cnt].so = match[0].rm_so; |
| 983 | sym_match_arr[cnt].eo = match[0].rm_eo; |
| 984 | sym_match_arr[cnt++].sym = sym; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 986 | if (sym_match_arr) { |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 987 | qsort(sym_match_arr, cnt, sizeof(struct sym_match), sym_rel_comp); |
Heinrich Schuchardt | 88127da | 2017-11-08 22:09:59 +0100 | [diff] [blame] | 988 | sym_arr = malloc((cnt+1) * sizeof(struct symbol *)); |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 989 | if (!sym_arr) |
| 990 | goto sym_re_search_free; |
| 991 | for (i = 0; i < cnt; i++) |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 992 | sym_arr[i] = sym_match_arr[i].sym; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | sym_arr[cnt] = NULL; |
Yann E. MORIN | 193b40a | 2013-05-06 14:57:47 +0200 | [diff] [blame] | 994 | } |
| 995 | sym_re_search_free: |
Yann E. MORIN | 508382a | 2013-07-16 20:39:42 +0200 | [diff] [blame] | 996 | /* sym_match_arr can be NULL if no match, but free(NULL) is OK */ |
| 997 | free(sym_match_arr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | regfree(&re); |
| 999 | |
| 1000 | return sym_arr; |
| 1001 | } |
| 1002 | |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1003 | /* |
| 1004 | * When we check for recursive dependencies we use a stack to save |
| 1005 | * current state so we can print out relevant info to user. |
| 1006 | * The entries are located on the call stack so no need to free memory. |
Martin Walch | 8d9dfe8 | 2013-10-03 17:28:14 +0200 | [diff] [blame] | 1007 | * Note insert() remove() must always match to properly clear the stack. |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1008 | */ |
| 1009 | static struct dep_stack { |
| 1010 | struct dep_stack *prev, *next; |
| 1011 | struct symbol *sym; |
| 1012 | struct property *prop; |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1013 | struct expr **expr; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1014 | } *check_top; |
| 1015 | |
| 1016 | static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym) |
| 1017 | { |
| 1018 | memset(stack, 0, sizeof(*stack)); |
| 1019 | if (check_top) |
| 1020 | check_top->next = stack; |
| 1021 | stack->prev = check_top; |
| 1022 | stack->sym = sym; |
| 1023 | check_top = stack; |
| 1024 | } |
| 1025 | |
| 1026 | static void dep_stack_remove(void) |
| 1027 | { |
| 1028 | check_top = check_top->prev; |
| 1029 | if (check_top) |
| 1030 | check_top->next = NULL; |
| 1031 | } |
| 1032 | |
| 1033 | /* |
| 1034 | * Called when we have detected a recursive dependency. |
| 1035 | * check_top point to the top of the stact so we use |
| 1036 | * the ->prev pointer to locate the bottom of the stack. |
| 1037 | */ |
| 1038 | static void sym_check_print_recursive(struct symbol *last_sym) |
| 1039 | { |
| 1040 | struct dep_stack *stack; |
| 1041 | struct symbol *sym, *next_sym; |
| 1042 | struct menu *menu = NULL; |
| 1043 | struct property *prop; |
| 1044 | struct dep_stack cv_stack; |
| 1045 | |
| 1046 | if (sym_is_choice_value(last_sym)) { |
| 1047 | dep_stack_insert(&cv_stack, last_sym); |
| 1048 | last_sym = prop_get_symbol(sym_get_choice_prop(last_sym)); |
| 1049 | } |
| 1050 | |
| 1051 | for (stack = check_top; stack != NULL; stack = stack->prev) |
| 1052 | if (stack->sym == last_sym) |
| 1053 | break; |
| 1054 | if (!stack) { |
| 1055 | fprintf(stderr, "unexpected recursive dependency error\n"); |
| 1056 | return; |
| 1057 | } |
| 1058 | |
| 1059 | for (; stack; stack = stack->next) { |
| 1060 | sym = stack->sym; |
| 1061 | next_sym = stack->next ? stack->next->sym : last_sym; |
| 1062 | prop = stack->prop; |
Sam Ravnborg | 3643f84 | 2010-08-14 14:40:00 +0200 | [diff] [blame] | 1063 | if (prop == NULL) |
| 1064 | prop = stack->sym->prop; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1065 | |
| 1066 | /* for choice values find the menu entry (used below) */ |
| 1067 | if (sym_is_choice(sym) || sym_is_choice_value(sym)) { |
| 1068 | for (prop = sym->prop; prop; prop = prop->next) { |
| 1069 | menu = prop->menu; |
| 1070 | if (prop->menu) |
| 1071 | break; |
| 1072 | } |
| 1073 | } |
| 1074 | if (stack->sym == last_sym) |
| 1075 | fprintf(stderr, "%s:%d:error: recursive dependency detected!\n", |
| 1076 | prop->file->name, prop->lineno); |
Masahiro Yamada | e3b03bf | 2017-12-16 00:28:42 +0900 | [diff] [blame] | 1077 | |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1078 | if (sym_is_choice(sym)) { |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1079 | fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n", |
| 1080 | menu->file->name, menu->lineno, |
| 1081 | sym->name ? sym->name : "<choice>", |
| 1082 | next_sym->name ? next_sym->name : "<choice>"); |
| 1083 | } else if (sym_is_choice_value(sym)) { |
| 1084 | fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n", |
| 1085 | menu->file->name, menu->lineno, |
| 1086 | sym->name ? sym->name : "<choice>", |
| 1087 | next_sym->name ? next_sym->name : "<choice>"); |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1088 | } else if (stack->expr == &sym->dir_dep.expr) { |
| 1089 | fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n", |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1090 | prop->file->name, prop->lineno, |
| 1091 | sym->name ? sym->name : "<choice>", |
| 1092 | next_sym->name ? next_sym->name : "<choice>"); |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1093 | } else if (stack->expr == &sym->rev_dep.expr) { |
| 1094 | fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n", |
| 1095 | prop->file->name, prop->lineno, |
| 1096 | sym->name ? sym->name : "<choice>", |
| 1097 | next_sym->name ? next_sym->name : "<choice>"); |
| 1098 | } else if (stack->expr == &sym->implied.expr) { |
| 1099 | fprintf(stderr, "%s:%d:\tsymbol %s is implied by %s\n", |
| 1100 | prop->file->name, prop->lineno, |
| 1101 | sym->name ? sym->name : "<choice>", |
| 1102 | next_sym->name ? next_sym->name : "<choice>"); |
| 1103 | } else if (stack->expr) { |
| 1104 | fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n", |
| 1105 | prop->file->name, prop->lineno, |
| 1106 | sym->name ? sym->name : "<choice>", |
| 1107 | prop_get_type_name(prop->type), |
| 1108 | next_sym->name ? next_sym->name : "<choice>"); |
| 1109 | } else { |
| 1110 | fprintf(stderr, "%s:%d:\tsymbol %s %s is visible depending on %s\n", |
| 1111 | prop->file->name, prop->lineno, |
| 1112 | sym->name ? sym->name : "<choice>", |
| 1113 | prop_get_type_name(prop->type), |
| 1114 | next_sym->name ? next_sym->name : "<choice>"); |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1115 | } |
| 1116 | } |
| 1117 | |
Masahiro Yamada | e3b03bf | 2017-12-16 00:28:42 +0900 | [diff] [blame] | 1118 | fprintf(stderr, |
Mauro Carvalho Chehab | cd238ef | 2019-06-12 14:52:48 -0300 | [diff] [blame] | 1119 | "For a resolution refer to Documentation/kbuild/kconfig-language.rst\n" |
Masahiro Yamada | e3b03bf | 2017-12-16 00:28:42 +0900 | [diff] [blame] | 1120 | "subsection \"Kconfig recursive dependency limitations\"\n" |
| 1121 | "\n"); |
| 1122 | |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1123 | if (check_top == &cv_stack) |
| 1124 | dep_stack_remove(); |
| 1125 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | static struct symbol *sym_check_expr_deps(struct expr *e) |
| 1128 | { |
| 1129 | struct symbol *sym; |
| 1130 | |
| 1131 | if (!e) |
| 1132 | return NULL; |
| 1133 | switch (e->type) { |
| 1134 | case E_OR: |
| 1135 | case E_AND: |
| 1136 | sym = sym_check_expr_deps(e->left.expr); |
| 1137 | if (sym) |
| 1138 | return sym; |
| 1139 | return sym_check_expr_deps(e->right.expr); |
| 1140 | case E_NOT: |
| 1141 | return sym_check_expr_deps(e->left.expr); |
| 1142 | case E_EQUAL: |
Jan Beulich | 31847b6 | 2015-06-15 13:00:21 +0100 | [diff] [blame] | 1143 | case E_GEQ: |
| 1144 | case E_GTH: |
| 1145 | case E_LEQ: |
| 1146 | case E_LTH: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | case E_UNEQUAL: |
| 1148 | sym = sym_check_deps(e->left.sym); |
| 1149 | if (sym) |
| 1150 | return sym; |
| 1151 | return sym_check_deps(e->right.sym); |
| 1152 | case E_SYMBOL: |
| 1153 | return sym_check_deps(e->left.sym); |
| 1154 | default: |
| 1155 | break; |
| 1156 | } |
Masahiro Yamada | 9e3e10c | 2018-02-06 09:34:41 +0900 | [diff] [blame] | 1157 | fprintf(stderr, "Oops! How to check %d?\n", e->type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | return NULL; |
| 1159 | } |
| 1160 | |
Sam Ravnborg | 5447d34 | 2007-05-06 09:20:10 +0200 | [diff] [blame] | 1161 | /* return NULL when dependencies are OK */ |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1162 | static struct symbol *sym_check_sym_deps(struct symbol *sym) |
| 1163 | { |
| 1164 | struct symbol *sym2; |
| 1165 | struct property *prop; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1166 | struct dep_stack stack; |
| 1167 | |
| 1168 | dep_stack_insert(&stack, sym); |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1169 | |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1170 | stack.expr = &sym->dir_dep.expr; |
| 1171 | sym2 = sym_check_expr_deps(sym->dir_dep.expr); |
| 1172 | if (sym2) |
| 1173 | goto out; |
| 1174 | |
| 1175 | stack.expr = &sym->rev_dep.expr; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1176 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); |
| 1177 | if (sym2) |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1178 | goto out; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1179 | |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1180 | stack.expr = &sym->implied.expr; |
Masahiro Yamada | 5e8c529 | 2018-08-15 14:59:44 +0900 | [diff] [blame] | 1181 | sym2 = sym_check_expr_deps(sym->implied.expr); |
| 1182 | if (sym2) |
| 1183 | goto out; |
| 1184 | |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1185 | stack.expr = NULL; |
| 1186 | |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1187 | for (prop = sym->prop; prop; prop = prop->next) { |
Masahiro Yamada | 5e8c529 | 2018-08-15 14:59:44 +0900 | [diff] [blame] | 1188 | if (prop->type == P_CHOICE || prop->type == P_SELECT || |
| 1189 | prop->type == P_IMPLY) |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1190 | continue; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1191 | stack.prop = prop; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1192 | sym2 = sym_check_expr_deps(prop->visible.expr); |
| 1193 | if (sym2) |
| 1194 | break; |
| 1195 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) |
| 1196 | continue; |
Masahiro Yamada | f498926 | 2018-08-15 14:59:45 +0900 | [diff] [blame] | 1197 | stack.expr = &prop->expr; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1198 | sym2 = sym_check_expr_deps(prop->expr); |
| 1199 | if (sym2) |
| 1200 | break; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1201 | stack.expr = NULL; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1202 | } |
| 1203 | |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1204 | out: |
| 1205 | dep_stack_remove(); |
| 1206 | |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1207 | return sym2; |
| 1208 | } |
| 1209 | |
| 1210 | static struct symbol *sym_check_choice_deps(struct symbol *choice) |
| 1211 | { |
| 1212 | struct symbol *sym, *sym2; |
| 1213 | struct property *prop; |
| 1214 | struct expr *e; |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1215 | struct dep_stack stack; |
| 1216 | |
| 1217 | dep_stack_insert(&stack, choice); |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1218 | |
| 1219 | prop = sym_get_choice_prop(choice); |
| 1220 | expr_list_for_each_sym(prop->expr, e, sym) |
| 1221 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); |
| 1222 | |
| 1223 | choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); |
| 1224 | sym2 = sym_check_sym_deps(choice); |
| 1225 | choice->flags &= ~SYMBOL_CHECK; |
| 1226 | if (sym2) |
| 1227 | goto out; |
| 1228 | |
| 1229 | expr_list_for_each_sym(prop->expr, e, sym) { |
| 1230 | sym2 = sym_check_sym_deps(sym); |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1231 | if (sym2) |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1232 | break; |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1233 | } |
| 1234 | out: |
| 1235 | expr_list_for_each_sym(prop->expr, e, sym) |
| 1236 | sym->flags &= ~SYMBOL_CHECK; |
| 1237 | |
| 1238 | if (sym2 && sym_is_choice_value(sym2) && |
| 1239 | prop_get_symbol(sym_get_choice_prop(sym2)) == choice) |
| 1240 | sym2 = choice; |
| 1241 | |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1242 | dep_stack_remove(); |
| 1243 | |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1244 | return sym2; |
| 1245 | } |
| 1246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | struct symbol *sym_check_deps(struct symbol *sym) |
| 1248 | { |
| 1249 | struct symbol *sym2; |
| 1250 | struct property *prop; |
| 1251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | if (sym->flags & SYMBOL_CHECK) { |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1253 | sym_check_print_recursive(sym); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | return sym; |
| 1255 | } |
David Gibson | 3f04e7d | 2005-11-08 21:34:46 -0800 | [diff] [blame] | 1256 | if (sym->flags & SYMBOL_CHECKED) |
| 1257 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1259 | if (sym_is_choice_value(sym)) { |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1260 | struct dep_stack stack; |
| 1261 | |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1262 | /* for choice groups start the check with main choice symbol */ |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1263 | dep_stack_insert(&stack, sym); |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1264 | prop = sym_get_choice_prop(sym); |
| 1265 | sym2 = sym_check_deps(prop_get_symbol(prop)); |
Roman Zippel | d595cea | 2010-07-31 23:35:30 +0200 | [diff] [blame] | 1266 | dep_stack_remove(); |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1267 | } else if (sym_is_choice(sym)) { |
| 1268 | sym2 = sym_check_choice_deps(sym); |
| 1269 | } else { |
| 1270 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); |
| 1271 | sym2 = sym_check_sym_deps(sym); |
| 1272 | sym->flags &= ~SYMBOL_CHECK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | } |
Roman Zippel | 4898117 | 2008-02-29 05:10:24 +0100 | [diff] [blame] | 1274 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | return sym2; |
| 1276 | } |
| 1277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | struct symbol *prop_get_symbol(struct property *prop) |
| 1279 | { |
| 1280 | if (prop->expr && (prop->expr->type == E_SYMBOL || |
Roman Zippel | 7a96292 | 2008-01-14 04:50:23 +0100 | [diff] [blame] | 1281 | prop->expr->type == E_LIST)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | return prop->expr->left.sym; |
| 1283 | return NULL; |
| 1284 | } |
| 1285 | |
| 1286 | const char *prop_get_type_name(enum prop_type type) |
| 1287 | { |
| 1288 | switch (type) { |
| 1289 | case P_PROMPT: |
| 1290 | return "prompt"; |
| 1291 | case P_COMMENT: |
| 1292 | return "comment"; |
| 1293 | case P_MENU: |
| 1294 | return "menu"; |
| 1295 | case P_DEFAULT: |
| 1296 | return "default"; |
| 1297 | case P_CHOICE: |
| 1298 | return "choice"; |
| 1299 | case P_SELECT: |
| 1300 | return "select"; |
Nicolas Pitre | 237e3ad | 2016-11-11 00:10:05 -0500 | [diff] [blame] | 1301 | case P_IMPLY: |
| 1302 | return "imply"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | case P_RANGE: |
| 1304 | return "range"; |
Sam Ravnborg | 59e89e3 | 2010-07-31 23:35:29 +0200 | [diff] [blame] | 1305 | case P_SYMBOL: |
| 1306 | return "symbol"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | case P_UNKNOWN: |
| 1308 | break; |
| 1309 | } |
| 1310 | return "unknown"; |
| 1311 | } |