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scripts/kconfig/symbol.c
28.6 KB
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// SPDX-License-Identifier: GPL-2.0 |
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/* * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
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*/ #include <ctype.h> #include <stdlib.h> #include <string.h> #include <regex.h> #include <sys/utsname.h> |
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#include "lkc.h" struct symbol symbol_yes = { .name = "y", .curr = { "y", yes }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}; struct symbol symbol_mod = { |
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.name = "m", .curr = { "m", mod }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}; struct symbol symbol_no = { |
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.name = "n", .curr = { "n", no }, |
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.flags = SYMBOL_CONST|SYMBOL_VALID, |
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}; static struct symbol symbol_empty = { |
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.name = "", .curr = { "", no }, .flags = SYMBOL_VALID, }; |
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struct symbol *sym_defconfig_list; |
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struct symbol *modules_sym; |
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static tristate modules_val; |
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|
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enum symbol_type sym_get_type(struct symbol *sym) { enum symbol_type type = sym->type; if (type == S_TRISTATE) { if (sym_is_choice_value(sym) && sym->visible == yes) type = S_BOOLEAN; else if (modules_val == no) type = S_BOOLEAN; } return type; } const char *sym_type_name(enum symbol_type type) { switch (type) { case S_BOOLEAN: |
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return "bool"; |
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case S_TRISTATE: return "tristate"; case S_INT: return "integer"; case S_HEX: return "hex"; case S_STRING: return "string"; case S_UNKNOWN: return "unknown"; |
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} return "???"; } struct property *sym_get_choice_prop(struct symbol *sym) { struct property *prop; for_all_choices(sym, prop) return prop; return NULL; |
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} |
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static struct property *sym_get_default_prop(struct symbol *sym) |
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{ struct property *prop; for_all_defaults(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri != no) return prop; } return NULL; } |
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struct property *sym_get_range_prop(struct symbol *sym) |
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{ struct property *prop; for_all_properties(sym, prop, P_RANGE) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri != no) return prop; } return NULL; } |
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static long long sym_get_range_val(struct symbol *sym, int base) |
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{ sym_calc_value(sym); switch (sym->type) { case S_INT: base = 10; break; case S_HEX: base = 16; break; default: break; } |
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return strtoll(sym->curr.val, NULL, base); |
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} static void sym_validate_range(struct symbol *sym) { struct property *prop; |
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int base; long long val, val2; |
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char str[64]; switch (sym->type) { case S_INT: base = 10; break; case S_HEX: base = 16; break; default: return; } prop = sym_get_range_prop(sym); if (!prop) return; |
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val = strtoll(sym->curr.val, NULL, base); |
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val2 = sym_get_range_val(prop->expr->left.sym, base); if (val >= val2) { val2 = sym_get_range_val(prop->expr->right.sym, base); if (val <= val2) return; } if (sym->type == S_INT) |
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sprintf(str, "%lld", val2); |
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else |
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sprintf(str, "0x%llx", val2); |
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sym->curr.val = xstrdup(str); |
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} |
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static void sym_set_changed(struct symbol *sym) { struct property *prop; sym->flags |= SYMBOL_CHANGED; for (prop = sym->prop; prop; prop = prop->next) { if (prop->menu) prop->menu->flags |= MENU_CHANGED; } } static void sym_set_all_changed(void) { struct symbol *sym; int i; for_all_symbols(i, sym) sym_set_changed(sym); } |
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static void sym_calc_visibility(struct symbol *sym) { struct property *prop; |
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struct symbol *choice_sym = NULL; |
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tristate tri; /* any prompt visible? */ tri = no; |
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if (sym_is_choice_value(sym)) choice_sym = prop_get_symbol(sym_get_choice_prop(sym)); |
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for_all_prompts(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); |
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/* * Tristate choice_values with visibility 'mod' are * not visible if the corresponding choice's value is * 'yes'. */ if (choice_sym && sym->type == S_TRISTATE && prop->visible.tri == mod && choice_sym->curr.tri == yes) prop->visible.tri = no; |
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tri = EXPR_OR(tri, prop->visible.tri); |
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} if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) tri = yes; if (sym->visible != tri) { sym->visible = tri; sym_set_changed(sym); } if (sym_is_choice_value(sym)) return; |
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/* defaulting to "yes" if no explicit "depends on" are given */ tri = yes; if (sym->dir_dep.expr) tri = expr_calc_value(sym->dir_dep.expr); |
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if (tri == mod && sym_get_type(sym) == S_BOOLEAN) |
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tri = yes; if (sym->dir_dep.tri != tri) { sym->dir_dep.tri = tri; sym_set_changed(sym); } |
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tri = no; if (sym->rev_dep.expr) tri = expr_calc_value(sym->rev_dep.expr); if (tri == mod && sym_get_type(sym) == S_BOOLEAN) tri = yes; if (sym->rev_dep.tri != tri) { sym->rev_dep.tri = tri; sym_set_changed(sym); } |
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tri = no; |
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if (sym->implied.expr) |
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tri = expr_calc_value(sym->implied.expr); if (tri == mod && sym_get_type(sym) == S_BOOLEAN) tri = yes; if (sym->implied.tri != tri) { sym->implied.tri = tri; sym_set_changed(sym); } |
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} |
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/* * Find the default symbol for a choice. * First try the default values for the choice symbol * Next locate the first visible choice value * Return NULL if none was found */ struct symbol *sym_choice_default(struct symbol *sym) |
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{ struct symbol *def_sym; struct property *prop; struct expr *e; |
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/* any of the defaults visible? */ for_all_defaults(sym, prop) { prop->visible.tri = expr_calc_value(prop->visible.expr); if (prop->visible.tri == no) continue; def_sym = prop_get_symbol(prop); |
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if (def_sym->visible != no) return def_sym; } /* just get the first visible value */ prop = sym_get_choice_prop(sym); |
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expr_list_for_each_sym(prop->expr, e, def_sym) |
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if (def_sym->visible != no) return def_sym; |
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|
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/* failed to locate any defaults */ |
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return NULL; } |
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static struct symbol *sym_calc_choice(struct symbol *sym) { struct symbol *def_sym; struct property *prop; struct expr *e; |
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int flags; |
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/* first calculate all choice values' visibilities */ |
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flags = sym->flags; |
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prop = sym_get_choice_prop(sym); |
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expr_list_for_each_sym(prop->expr, e, def_sym) { |
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sym_calc_visibility(def_sym); |
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if (def_sym->visible != no) flags &= def_sym->flags; } sym->flags &= flags | ~SYMBOL_DEF_USER; |
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/* is the user choice visible? */ def_sym = sym->def[S_DEF_USER].val; if (def_sym && def_sym->visible != no) return def_sym; def_sym = sym_choice_default(sym); if (def_sym == NULL) /* no choice? reset tristate value */ sym->curr.tri = no; return def_sym; } |
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static void sym_warn_unmet_dep(struct symbol *sym) { struct gstr gs = str_new(); str_printf(&gs, " WARNING: unmet direct dependencies detected for %s ", sym->name); str_printf(&gs, " Depends on [%c]: ", sym->dir_dep.tri == mod ? 'm' : 'n'); expr_gstr_print(sym->dir_dep.expr, &gs); str_printf(&gs, " "); expr_gstr_print_revdep(sym->rev_dep.expr, &gs, yes, " Selected by [y]: "); expr_gstr_print_revdep(sym->rev_dep.expr, &gs, mod, " Selected by [m]: "); fputs(str_get(&gs), stderr); } |
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void sym_calc_value(struct symbol *sym) { struct symbol_value newval, oldval; struct property *prop; struct expr *e; if (!sym) return; if (sym->flags & SYMBOL_VALID) return; |
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if (sym_is_choice_value(sym) && sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES) { sym->flags &= ~SYMBOL_NEED_SET_CHOICE_VALUES; prop = sym_get_choice_prop(sym); sym_calc_value(prop_get_symbol(prop)); } |
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sym->flags |= SYMBOL_VALID; oldval = sym->curr; switch (sym->type) { case S_INT: case S_HEX: case S_STRING: newval = symbol_empty.curr; break; case S_BOOLEAN: case S_TRISTATE: newval = symbol_no.curr; break; default: sym->curr.val = sym->name; sym->curr.tri = no; return; } |
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sym->flags &= ~SYMBOL_WRITE; |
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sym_calc_visibility(sym); |
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if (sym->visible != no) sym->flags |= SYMBOL_WRITE; |
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/* set default if recursively called */ sym->curr = newval; switch (sym_get_type(sym)) { case S_BOOLEAN: case S_TRISTATE: if (sym_is_choice_value(sym) && sym->visible == yes) { prop = sym_get_choice_prop(sym); newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; |
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} else { if (sym->visible != no) { /* if the symbol is visible use the user value * if available, otherwise try the default value */ |
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if (sym_has_value(sym)) { newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri, sym->visible); goto calc_newval; } |
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} |
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if (sym->rev_dep.tri != no) |
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sym->flags |= SYMBOL_WRITE; |
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if (!sym_is_choice(sym)) { prop = sym_get_default_prop(sym); if (prop) { |
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newval.tri = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); |
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if (newval.tri != no) sym->flags |= SYMBOL_WRITE; |
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} |
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if (sym->implied.tri != no) { sym->flags |= SYMBOL_WRITE; newval.tri = EXPR_OR(newval.tri, sym->implied.tri); |
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newval.tri = EXPR_AND(newval.tri, sym->dir_dep.tri); |
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} |
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} |
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calc_newval: |
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if (sym->dir_dep.tri < sym->rev_dep.tri) sym_warn_unmet_dep(sym); |
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newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); |
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} |
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if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) |
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newval.tri = yes; break; case S_STRING: case S_HEX: case S_INT: |
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if (sym->visible != no && sym_has_value(sym)) { newval.val = sym->def[S_DEF_USER].val; break; |
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} prop = sym_get_default_prop(sym); if (prop) { struct symbol *ds = prop_get_symbol(prop); if (ds) { sym->flags |= SYMBOL_WRITE; sym_calc_value(ds); newval.val = ds->curr.val; } } break; default: ; } sym->curr = newval; if (sym_is_choice(sym) && newval.tri == yes) sym->curr.val = sym_calc_choice(sym); |
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sym_validate_range(sym); |
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|
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if (memcmp(&oldval, &sym->curr, sizeof(oldval))) { |
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sym_set_changed(sym); |
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if (modules_sym == sym) { sym_set_all_changed(); modules_val = modules_sym->curr.tri; } } |
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if (sym_is_choice(sym)) { |
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struct symbol *choice_sym; |
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|
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prop = sym_get_choice_prop(sym); |
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expr_list_for_each_sym(prop->expr, e, choice_sym) { |
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if ((sym->flags & SYMBOL_WRITE) && choice_sym->visible != no) choice_sym->flags |= SYMBOL_WRITE; if (sym->flags & SYMBOL_CHANGED) |
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sym_set_changed(choice_sym); |
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} } |
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if (sym->flags & SYMBOL_NO_WRITE) |
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sym->flags &= ~SYMBOL_WRITE; |
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if (sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES) set_all_choice_values(sym); |
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} void sym_clear_all_valid(void) { struct symbol *sym; int i; for_all_symbols(i, sym) sym->flags &= ~SYMBOL_VALID; |
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sym_add_change_count(1); |
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sym_calc_value(modules_sym); |
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} |
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bool sym_tristate_within_range(struct symbol *sym, tristate val) { int type = sym_get_type(sym); if (sym->visible == no) return false; if (type != S_BOOLEAN && type != S_TRISTATE) return false; if (type == S_BOOLEAN && val == mod) return false; if (sym->visible <= sym->rev_dep.tri) return false; if (sym_is_choice_value(sym) && sym->visible == yes) return val == yes; return val >= sym->rev_dep.tri && val <= sym->visible; } bool sym_set_tristate_value(struct symbol *sym, tristate val) { tristate oldval = sym_get_tristate_value(sym); if (oldval != val && !sym_tristate_within_range(sym, val)) return false; |
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if (!(sym->flags & SYMBOL_DEF_USER)) { sym->flags |= SYMBOL_DEF_USER; |
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sym_set_changed(sym); } |
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/* * setting a choice value also resets the new flag of the choice * symbol and all other choice values. */ |
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if (sym_is_choice_value(sym) && val == yes) { struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
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struct property *prop; struct expr *e; |
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cs->def[S_DEF_USER].val = sym; |
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cs->flags |= SYMBOL_DEF_USER; |
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prop = sym_get_choice_prop(cs); for (e = prop->expr; e; e = e->left.expr) { if (e->right.sym->visible != no) |
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e->right.sym->flags |= SYMBOL_DEF_USER; |
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} |
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} |
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sym->def[S_DEF_USER].tri = val; |
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if (oldval != val) |
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sym_clear_all_valid(); |
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return true; } tristate sym_toggle_tristate_value(struct symbol *sym) { tristate oldval, newval; oldval = newval = sym_get_tristate_value(sym); do { switch (newval) { case no: newval = mod; break; case mod: newval = yes; break; case yes: newval = no; break; } if (sym_set_tristate_value(sym, newval)) break; } while (oldval != newval); return newval; } bool sym_string_valid(struct symbol *sym, const char *str) { signed char ch; switch (sym->type) { case S_STRING: return true; case S_INT: ch = *str++; if (ch == '-') ch = *str++; if (!isdigit(ch)) return false; if (ch == '0' && *str != 0) return false; while ((ch = *str++)) { if (!isdigit(ch)) return false; } return true; case S_HEX: if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) str += 2; ch = *str++; do { if (!isxdigit(ch)) return false; } while ((ch = *str++)); return true; case S_BOOLEAN: case S_TRISTATE: switch (str[0]) { case 'y': case 'Y': case 'm': case 'M': case 'n': case 'N': return true; } return false; default: return false; } } bool sym_string_within_range(struct symbol *sym, const char *str) { struct property *prop; |
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long long val; |
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switch (sym->type) { case S_STRING: return sym_string_valid(sym, str); case S_INT: if (!sym_string_valid(sym, str)) return false; prop = sym_get_range_prop(sym); if (!prop) return true; |
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val = strtoll(str, NULL, 10); |
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return val >= sym_get_range_val(prop->expr->left.sym, 10) && val <= sym_get_range_val(prop->expr->right.sym, 10); |
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603 604 605 606 607 608 |
case S_HEX: if (!sym_string_valid(sym, str)) return false; prop = sym_get_range_prop(sym); if (!prop) return true; |
129784abc kconfig: switch t... |
609 |
val = strtoll(str, NULL, 16); |
4cf3cbe2a [PATCH] kconfig: ... |
610 611 |
return val >= sym_get_range_val(prop->expr->left.sym, 16) && val <= sym_get_range_val(prop->expr->right.sym, 16); |
1da177e4c Linux-2.6.12-rc2 |
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 |
case S_BOOLEAN: case S_TRISTATE: switch (str[0]) { case 'y': case 'Y': return sym_tristate_within_range(sym, yes); case 'm': case 'M': return sym_tristate_within_range(sym, mod); case 'n': case 'N': return sym_tristate_within_range(sym, no); } return false; default: return false; } } bool sym_set_string_value(struct symbol *sym, const char *newval) { const char *oldval; char *val; int size; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: switch (newval[0]) { case 'y': case 'Y': return sym_set_tristate_value(sym, yes); case 'm': case 'M': return sym_set_tristate_value(sym, mod); case 'n': case 'N': return sym_set_tristate_value(sym, no); } return false; default: ; } if (!sym_string_within_range(sym, newval)) return false; |
669bfad90 kconfig: allow lo... |
652 653 |
if (!(sym->flags & SYMBOL_DEF_USER)) { sym->flags |= SYMBOL_DEF_USER; |
1da177e4c Linux-2.6.12-rc2 |
654 655 |
sym_set_changed(sym); } |
0c1822e69 kconfig: allow mu... |
656 |
oldval = sym->def[S_DEF_USER].val; |
1da177e4c Linux-2.6.12-rc2 |
657 658 659 |
size = strlen(newval) + 1; if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { size += 2; |
177acf784 kconfig: Fix mall... |
660 |
sym->def[S_DEF_USER].val = val = xmalloc(size); |
1da177e4c Linux-2.6.12-rc2 |
661 662 663 |
*val++ = '0'; *val++ = 'x'; } else if (!oldval || strcmp(oldval, newval)) |
177acf784 kconfig: Fix mall... |
664 |
sym->def[S_DEF_USER].val = val = xmalloc(size); |
1da177e4c Linux-2.6.12-rc2 |
665 666 667 668 669 670 671 672 673 |
else return true; strcpy(val, newval); free((void *)oldval); sym_clear_all_valid(); return true; } |
7cf3d73b4 kconfig: add save... |
674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 |
/* * Find the default value associated to a symbol. * For tristate symbol handle the modules=n case * in which case "m" becomes "y". * If the symbol does not have any default then fallback * to the fixed default values. */ const char *sym_get_string_default(struct symbol *sym) { struct property *prop; struct symbol *ds; const char *str; tristate val; sym_calc_visibility(sym); sym_calc_value(modules_sym); val = symbol_no.curr.tri; str = symbol_empty.curr.val; /* If symbol has a default value look it up */ prop = sym_get_default_prop(sym); if (prop != NULL) { switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: |
579fb8e74 kconfig: fix typos |
699 |
/* The visibility may limit the value from yes => mod */ |
7cf3d73b4 kconfig: add save... |
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 |
val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri); break; default: /* * The following fails to handle the situation * where a default value is further limited by * the valid range. */ ds = prop_get_symbol(prop); if (ds != NULL) { sym_calc_value(ds); str = (const char *)ds->curr.val; } } } /* Handle select statements */ val = EXPR_OR(val, sym->rev_dep.tri); /* transpose mod to yes if modules are not enabled */ if (val == mod) if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no) val = yes; /* transpose mod to yes if type is bool */ if (sym->type == S_BOOLEAN && val == mod) val = yes; |
237e3ad0f Kconfig: Introduc... |
727 728 729 |
/* adjust the default value if this symbol is implied by another */ if (val < sym->implied.tri) val = sym->implied.tri; |
7cf3d73b4 kconfig: add save... |
730 731 732 733 734 735 736 737 738 739 740 741 742 |
switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: switch (val) { case no: return "n"; case mod: return "m"; case yes: return "y"; } case S_INT: case S_HEX: return str; case S_STRING: return str; |
7cf3d73b4 kconfig: add save... |
743 744 745 746 747 |
case S_UNKNOWN: break; } return ""; } |
1da177e4c Linux-2.6.12-rc2 |
748 749 750 751 752 753 754 755 756 757 758 759 |
const char *sym_get_string_value(struct symbol *sym) { tristate val; switch (sym->type) { case S_BOOLEAN: case S_TRISTATE: val = sym_get_tristate_value(sym); switch (val) { case no: return "n"; case mod: |
e54e692ba kconfig: introduc... |
760 761 |
sym_calc_value(modules_sym); return (modules_sym->curr.tri == no) ? "n" : "m"; |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 767 768 769 770 |
case yes: return "y"; } break; default: ; } return (const char *)sym->curr.val; } |
baa23ec86 kconfig: Fix spel... |
771 |
bool sym_is_changeable(struct symbol *sym) |
1da177e4c Linux-2.6.12-rc2 |
772 773 774 |
{ return sym->visible > sym->rev_dep.tri; } |
e66f25d7d Improve kconfig s... |
775 776 777 778 779 780 781 782 |
static unsigned strhash(const char *s) { /* fnv32 hash */ unsigned hash = 2166136261U; for (; *s; s++) hash = (hash ^ *s) * 0x01000193; return hash; } |
5a1aa8a1a kconfig: add name... |
783 |
struct symbol *sym_lookup(const char *name, int flags) |
1da177e4c Linux-2.6.12-rc2 |
784 785 |
{ struct symbol *symbol; |
1da177e4c Linux-2.6.12-rc2 |
786 |
char *new_name; |
e66f25d7d Improve kconfig s... |
787 |
int hash; |
1da177e4c Linux-2.6.12-rc2 |
788 789 790 791 792 793 794 795 796 |
if (name) { if (name[0] && !name[1]) { switch (name[0]) { case 'y': return &symbol_yes; case 'm': return &symbol_mod; case 'n': return &symbol_no; } } |
e66f25d7d Improve kconfig s... |
797 |
hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4c Linux-2.6.12-rc2 |
798 799 |
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
e66f25d7d Improve kconfig s... |
800 801 |
if (symbol->name && !strcmp(symbol->name, name) && |
5a1aa8a1a kconfig: add name... |
802 803 804 |
(flags ? symbol->flags & flags : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE)))) return symbol; |
1da177e4c Linux-2.6.12-rc2 |
805 |
} |
cd81fc82b kconfig: add xstr... |
806 |
new_name = xstrdup(name); |
1da177e4c Linux-2.6.12-rc2 |
807 808 |
} else { new_name = NULL; |
e66f25d7d Improve kconfig s... |
809 |
hash = 0; |
1da177e4c Linux-2.6.12-rc2 |
810 |
} |
177acf784 kconfig: Fix mall... |
811 |
symbol = xmalloc(sizeof(*symbol)); |
1da177e4c Linux-2.6.12-rc2 |
812 813 814 |
memset(symbol, 0, sizeof(*symbol)); symbol->name = new_name; symbol->type = S_UNKNOWN; |
cfc6eea9f kconfig: do not u... |
815 |
symbol->flags = flags; |
1da177e4c Linux-2.6.12-rc2 |
816 817 818 819 820 821 822 823 824 825 |
symbol->next = symbol_hash[hash]; symbol_hash[hash] = symbol; return symbol; } struct symbol *sym_find(const char *name) { struct symbol *symbol = NULL; |
1da177e4c Linux-2.6.12-rc2 |
826 827 828 829 830 831 832 833 834 835 836 837 |
int hash = 0; if (!name) return NULL; if (name[0] && !name[1]) { switch (name[0]) { case 'y': return &symbol_yes; case 'm': return &symbol_mod; case 'n': return &symbol_no; } } |
e66f25d7d Improve kconfig s... |
838 |
hash = strhash(name) % SYMBOL_HASHSIZE; |
1da177e4c Linux-2.6.12-rc2 |
839 840 |
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
e66f25d7d Improve kconfig s... |
841 842 |
if (symbol->name && !strcmp(symbol->name, name) && |
1da177e4c Linux-2.6.12-rc2 |
843 844 845 846 847 848 |
!(symbol->flags & SYMBOL_CONST)) break; } return symbol; } |
e54e692ba kconfig: introduc... |
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 |
const char *sym_escape_string_value(const char *in) { const char *p; size_t reslen; char *res; size_t l; reslen = strlen(in) + strlen("\"\"") + 1; p = in; for (;;) { l = strcspn(p, "\"\\"); p += l; if (p[0] == '\0') break; reslen++; p++; } |
177acf784 kconfig: Fix mall... |
869 |
res = xmalloc(reslen); |
e54e692ba kconfig: introduc... |
870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 |
res[0] = '\0'; strcat(res, "\""); p = in; for (;;) { l = strcspn(p, "\"\\"); strncat(res, p, l); p += l; if (p[0] == '\0') break; strcat(res, "\\"); strncat(res, p++, 1); } strcat(res, "\""); return res; } |
193b40aeb kconfig: sort fou... |
890 891 892 893 894 895 896 897 898 |
struct sym_match { struct symbol *sym; off_t so, eo; }; /* Compare matched symbols as thus: * - first, symbols that match exactly * - then, alphabetical sort */ |
803b35198 kconfig: minor st... |
899 |
static int sym_rel_comp(const void *sym1, const void *sym2) |
193b40aeb kconfig: sort fou... |
900 |
{ |
508382a04 kconfig: simplify... |
901 902 |
const struct sym_match *s1 = sym1; const struct sym_match *s2 = sym2; |
26e933e3c kconfig: avoid mu... |
903 |
int exact1, exact2; |
193b40aeb kconfig: sort fou... |
904 905 906 907 908 909 910 911 912 913 |
/* Exact match: * - if matched length on symbol s1 is the length of that symbol, * then this symbol should come first; * - if matched length on symbol s2 is the length of that symbol, * then this symbol should come first. * Note: since the search can be a regexp, both symbols may match * exactly; if this is the case, we can't decide which comes first, * and we fallback to sorting alphabetically. */ |
26e933e3c kconfig: avoid mu... |
914 915 916 |
exact1 = (s1->eo - s1->so) == strlen(s1->sym->name); exact2 = (s2->eo - s2->so) == strlen(s2->sym->name); if (exact1 && !exact2) |
193b40aeb kconfig: sort fou... |
917 |
return -1; |
26e933e3c kconfig: avoid mu... |
918 |
if (!exact1 && exact2) |
193b40aeb kconfig: sort fou... |
919 920 921 922 923 |
return 1; /* As a fallback, sort symbols alphabetically */ return strcmp(s1->sym->name, s2->sym->name); } |
1da177e4c Linux-2.6.12-rc2 |
924 925 926 |
struct symbol **sym_re_search(const char *pattern) { struct symbol *sym, **sym_arr = NULL; |
508382a04 kconfig: simplify... |
927 |
struct sym_match *sym_match_arr = NULL; |
1da177e4c Linux-2.6.12-rc2 |
928 929 |
int i, cnt, size; regex_t re; |
193b40aeb kconfig: sort fou... |
930 |
regmatch_t match[1]; |
1da177e4c Linux-2.6.12-rc2 |
931 932 933 934 935 |
cnt = size = 0; /* Skip if empty */ if (strlen(pattern) == 0) return NULL; |
193b40aeb kconfig: sort fou... |
936 |
if (regcomp(&re, pattern, REG_EXTENDED|REG_ICASE)) |
1da177e4c Linux-2.6.12-rc2 |
937 938 939 940 941 |
return NULL; for_all_symbols(i, sym) { if (sym->flags & SYMBOL_CONST || !sym->name) continue; |
193b40aeb kconfig: sort fou... |
942 |
if (regexec(&re, sym->name, 1, match, 0)) |
1da177e4c Linux-2.6.12-rc2 |
943 |
continue; |
1407f97ae kconfig: don't al... |
944 |
if (cnt >= size) { |
193b40aeb kconfig: sort fou... |
945 |
void *tmp; |
1da177e4c Linux-2.6.12-rc2 |
946 |
size += 16; |
508382a04 kconfig: simplify... |
947 |
tmp = realloc(sym_match_arr, size * sizeof(struct sym_match)); |
803b35198 kconfig: minor st... |
948 |
if (!tmp) |
193b40aeb kconfig: sort fou... |
949 |
goto sym_re_search_free; |
193b40aeb kconfig: sort fou... |
950 |
sym_match_arr = tmp; |
1da177e4c Linux-2.6.12-rc2 |
951 |
} |
da6df879b kconfig: recalc s... |
952 |
sym_calc_value(sym); |
803b35198 kconfig: minor st... |
953 |
/* As regexec returned 0, we know we have a match, so |
193b40aeb kconfig: sort fou... |
954 955 |
* we can use match[0].rm_[se]o without further checks */ |
508382a04 kconfig: simplify... |
956 957 958 |
sym_match_arr[cnt].so = match[0].rm_so; sym_match_arr[cnt].eo = match[0].rm_eo; sym_match_arr[cnt++].sym = sym; |
1da177e4c Linux-2.6.12-rc2 |
959 |
} |
193b40aeb kconfig: sort fou... |
960 |
if (sym_match_arr) { |
508382a04 kconfig: simplify... |
961 |
qsort(sym_match_arr, cnt, sizeof(struct sym_match), sym_rel_comp); |
88127dae6 kconfig/symbol.c:... |
962 |
sym_arr = malloc((cnt+1) * sizeof(struct symbol *)); |
193b40aeb kconfig: sort fou... |
963 964 965 |
if (!sym_arr) goto sym_re_search_free; for (i = 0; i < cnt; i++) |
508382a04 kconfig: simplify... |
966 |
sym_arr[i] = sym_match_arr[i].sym; |
1da177e4c Linux-2.6.12-rc2 |
967 |
sym_arr[cnt] = NULL; |
193b40aeb kconfig: sort fou... |
968 969 |
} sym_re_search_free: |
508382a04 kconfig: simplify... |
970 971 |
/* sym_match_arr can be NULL if no match, but free(NULL) is OK */ free(sym_match_arr); |
1da177e4c Linux-2.6.12-rc2 |
972 973 974 975 |
regfree(&re); return sym_arr; } |
d595cea62 kconfig: print mo... |
976 977 978 979 |
/* * When we check for recursive dependencies we use a stack to save * current state so we can print out relevant info to user. * The entries are located on the call stack so no need to free memory. |
8d9dfe827 kconfig: fix triv... |
980 |
* Note insert() remove() must always match to properly clear the stack. |
d595cea62 kconfig: print mo... |
981 982 983 984 985 |
*/ static struct dep_stack { struct dep_stack *prev, *next; struct symbol *sym; struct property *prop; |
f498926c4 kconfig: improve ... |
986 |
struct expr **expr; |
d595cea62 kconfig: print mo... |
987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 |
} *check_top; static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym) { memset(stack, 0, sizeof(*stack)); if (check_top) check_top->next = stack; stack->prev = check_top; stack->sym = sym; check_top = stack; } static void dep_stack_remove(void) { check_top = check_top->prev; if (check_top) check_top->next = NULL; } /* * Called when we have detected a recursive dependency. * check_top point to the top of the stact so we use * the ->prev pointer to locate the bottom of the stack. */ static void sym_check_print_recursive(struct symbol *last_sym) { struct dep_stack *stack; struct symbol *sym, *next_sym; struct menu *menu = NULL; struct property *prop; struct dep_stack cv_stack; if (sym_is_choice_value(last_sym)) { dep_stack_insert(&cv_stack, last_sym); last_sym = prop_get_symbol(sym_get_choice_prop(last_sym)); } for (stack = check_top; stack != NULL; stack = stack->prev) if (stack->sym == last_sym) break; if (!stack) { fprintf(stderr, "unexpected recursive dependency error "); return; } for (; stack; stack = stack->next) { sym = stack->sym; next_sym = stack->next ? stack->next->sym : last_sym; prop = stack->prop; |
3643f849d kconfig: fix segf... |
1037 1038 |
if (prop == NULL) prop = stack->sym->prop; |
d595cea62 kconfig: print mo... |
1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 |
/* for choice values find the menu entry (used below) */ if (sym_is_choice(sym) || sym_is_choice_value(sym)) { for (prop = sym->prop; prop; prop = prop->next) { menu = prop->menu; if (prop->menu) break; } } if (stack->sym == last_sym) fprintf(stderr, "%s:%d:error: recursive dependency detected! ", prop->file->name, prop->lineno); |
e3b03bf29 kconfig: display ... |
1052 |
|
f498926c4 kconfig: improve ... |
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 |
if (sym_is_choice(sym)) { fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s ", menu->file->name, menu->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); } else if (sym_is_choice_value(sym)) { fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s ", menu->file->name, menu->lineno, |
d595cea62 kconfig: print mo... |
1063 |
sym->name ? sym->name : "<choice>", |
d595cea62 kconfig: print mo... |
1064 |
next_sym->name ? next_sym->name : "<choice>"); |
f498926c4 kconfig: improve ... |
1065 |
} else if (stack->expr == &sym->dir_dep.expr) { |
d595cea62 kconfig: print mo... |
1066 1067 1068 1069 1070 |
fprintf(stderr, "%s:%d:\tsymbol %s depends on %s ", prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); |
f498926c4 kconfig: improve ... |
1071 1072 1073 1074 |
} else if (stack->expr == &sym->rev_dep.expr) { fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s ", prop->file->name, prop->lineno, |
d595cea62 kconfig: print mo... |
1075 1076 |
sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); |
f498926c4 kconfig: improve ... |
1077 1078 1079 1080 |
} else if (stack->expr == &sym->implied.expr) { fprintf(stderr, "%s:%d:\tsymbol %s is implied by %s ", prop->file->name, prop->lineno, |
d595cea62 kconfig: print mo... |
1081 1082 |
sym->name ? sym->name : "<choice>", next_sym->name ? next_sym->name : "<choice>"); |
f498926c4 kconfig: improve ... |
1083 1084 1085 1086 1087 1088 1089 |
} else if (stack->expr) { fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s ", prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", prop_get_type_name(prop->type), next_sym->name ? next_sym->name : "<choice>"); |
d595cea62 kconfig: print mo... |
1090 |
} else { |
f498926c4 kconfig: improve ... |
1091 1092 |
fprintf(stderr, "%s:%d:\tsymbol %s %s is visible depending on %s ", |
d595cea62 kconfig: print mo... |
1093 1094 |
prop->file->name, prop->lineno, sym->name ? sym->name : "<choice>", |
f498926c4 kconfig: improve ... |
1095 |
prop_get_type_name(prop->type), |
d595cea62 kconfig: print mo... |
1096 1097 1098 |
next_sym->name ? next_sym->name : "<choice>"); } } |
e3b03bf29 kconfig: display ... |
1099 |
fprintf(stderr, |
cd238effe docs: kbuild: con... |
1100 1101 |
"For a resolution refer to Documentation/kbuild/kconfig-language.rst " |
e3b03bf29 kconfig: display ... |
1102 1103 1104 1105 |
"subsection \"Kconfig recursive dependency limitations\" " " "); |
d595cea62 kconfig: print mo... |
1106 1107 1108 |
if (check_top == &cv_stack) dep_stack_remove(); } |
1da177e4c Linux-2.6.12-rc2 |
1109 |
|
1da177e4c Linux-2.6.12-rc2 |
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 |
static struct symbol *sym_check_expr_deps(struct expr *e) { struct symbol *sym; if (!e) return NULL; switch (e->type) { case E_OR: case E_AND: sym = sym_check_expr_deps(e->left.expr); if (sym) return sym; return sym_check_expr_deps(e->right.expr); case E_NOT: return sym_check_expr_deps(e->left.expr); case E_EQUAL: |
31847b67b kconfig: allow us... |
1126 1127 1128 1129 |
case E_GEQ: case E_GTH: case E_LEQ: case E_LTH: |
1da177e4c Linux-2.6.12-rc2 |
1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 |
case E_UNEQUAL: sym = sym_check_deps(e->left.sym); if (sym) return sym; return sym_check_deps(e->right.sym); case E_SYMBOL: return sym_check_deps(e->left.sym); default: break; } |
9e3e10c72 kconfig: send err... |
1140 1141 |
fprintf(stderr, "Oops! How to check %d? ", e->type); |
1da177e4c Linux-2.6.12-rc2 |
1142 1143 |
return NULL; } |
5447d34b0 kconfig: error ou... |
1144 |
/* return NULL when dependencies are OK */ |
489811788 kconfig: fix choi... |
1145 |
static struct symbol *sym_check_sym_deps(struct symbol *sym) |
1da177e4c Linux-2.6.12-rc2 |
1146 1147 1148 |
{ struct symbol *sym2; struct property *prop; |
d595cea62 kconfig: print mo... |
1149 1150 1151 |
struct dep_stack stack; dep_stack_insert(&stack, sym); |
1da177e4c Linux-2.6.12-rc2 |
1152 |
|
f498926c4 kconfig: improve ... |
1153 1154 1155 1156 1157 1158 |
stack.expr = &sym->dir_dep.expr; sym2 = sym_check_expr_deps(sym->dir_dep.expr); if (sym2) goto out; stack.expr = &sym->rev_dep.expr; |
1da177e4c Linux-2.6.12-rc2 |
1159 1160 |
sym2 = sym_check_expr_deps(sym->rev_dep.expr); if (sym2) |
d595cea62 kconfig: print mo... |
1161 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1162 |
|
f498926c4 kconfig: improve ... |
1163 |
stack.expr = &sym->implied.expr; |
5e8c5299d kconfig: report r... |
1164 1165 1166 |
sym2 = sym_check_expr_deps(sym->implied.expr); if (sym2) goto out; |
f498926c4 kconfig: improve ... |
1167 |
stack.expr = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1168 |
for (prop = sym->prop; prop; prop = prop->next) { |
5e8c5299d kconfig: report r... |
1169 1170 |
if (prop->type == P_CHOICE || prop->type == P_SELECT || prop->type == P_IMPLY) |
1da177e4c Linux-2.6.12-rc2 |
1171 |
continue; |
d595cea62 kconfig: print mo... |
1172 |
stack.prop = prop; |
1da177e4c Linux-2.6.12-rc2 |
1173 1174 |
sym2 = sym_check_expr_deps(prop->visible.expr); if (sym2) |
489811788 kconfig: fix choi... |
1175 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1176 1177 |
if (prop->type != P_DEFAULT || sym_is_choice(sym)) continue; |
f498926c4 kconfig: improve ... |
1178 |
stack.expr = &prop->expr; |
1da177e4c Linux-2.6.12-rc2 |
1179 1180 |
sym2 = sym_check_expr_deps(prop->expr); if (sym2) |
489811788 kconfig: fix choi... |
1181 |
break; |
d595cea62 kconfig: print mo... |
1182 |
stack.expr = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1183 |
} |
489811788 kconfig: fix choi... |
1184 |
|
d595cea62 kconfig: print mo... |
1185 1186 |
out: dep_stack_remove(); |
489811788 kconfig: fix choi... |
1187 1188 1189 1190 1191 1192 1193 1194 |
return sym2; } static struct symbol *sym_check_choice_deps(struct symbol *choice) { struct symbol *sym, *sym2; struct property *prop; struct expr *e; |
d595cea62 kconfig: print mo... |
1195 1196 1197 |
struct dep_stack stack; dep_stack_insert(&stack, choice); |
489811788 kconfig: fix choi... |
1198 1199 1200 1201 1202 1203 1204 1205 |
prop = sym_get_choice_prop(choice); expr_list_for_each_sym(prop->expr, e, sym) sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); sym2 = sym_check_sym_deps(choice); choice->flags &= ~SYMBOL_CHECK; |
5447d34b0 kconfig: error ou... |
1206 |
if (sym2) |
489811788 kconfig: fix choi... |
1207 1208 1209 1210 |
goto out; expr_list_for_each_sym(prop->expr, e, sym) { sym2 = sym_check_sym_deps(sym); |
d595cea62 kconfig: print mo... |
1211 |
if (sym2) |
489811788 kconfig: fix choi... |
1212 |
break; |
489811788 kconfig: fix choi... |
1213 1214 1215 1216 1217 1218 1219 1220 |
} out: expr_list_for_each_sym(prop->expr, e, sym) sym->flags &= ~SYMBOL_CHECK; if (sym2 && sym_is_choice_value(sym2) && prop_get_symbol(sym_get_choice_prop(sym2)) == choice) sym2 = choice; |
d595cea62 kconfig: print mo... |
1221 |
dep_stack_remove(); |
489811788 kconfig: fix choi... |
1222 1223 1224 1225 1226 1227 1228 1229 1230 |
return sym2; } struct symbol *sym_check_deps(struct symbol *sym) { struct symbol *sym2; struct property *prop; if (sym->flags & SYMBOL_CHECK) { |
d595cea62 kconfig: print mo... |
1231 |
sym_check_print_recursive(sym); |
489811788 kconfig: fix choi... |
1232 1233 1234 1235 1236 1237 |
return sym; } if (sym->flags & SYMBOL_CHECKED) return NULL; if (sym_is_choice_value(sym)) { |
d595cea62 kconfig: print mo... |
1238 |
struct dep_stack stack; |
489811788 kconfig: fix choi... |
1239 |
/* for choice groups start the check with main choice symbol */ |
d595cea62 kconfig: print mo... |
1240 |
dep_stack_insert(&stack, sym); |
489811788 kconfig: fix choi... |
1241 1242 |
prop = sym_get_choice_prop(sym); sym2 = sym_check_deps(prop_get_symbol(prop)); |
d595cea62 kconfig: print mo... |
1243 |
dep_stack_remove(); |
489811788 kconfig: fix choi... |
1244 1245 1246 1247 1248 1249 1250 |
} else if (sym_is_choice(sym)) { sym2 = sym_check_choice_deps(sym); } else { sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); sym2 = sym_check_sym_deps(sym); sym->flags &= ~SYMBOL_CHECK; } |
1da177e4c Linux-2.6.12-rc2 |
1251 1252 |
return sym2; } |
1da177e4c Linux-2.6.12-rc2 |
1253 1254 1255 |
struct symbol *prop_get_symbol(struct property *prop) { if (prop->expr && (prop->expr->type == E_SYMBOL || |
7a9629233 kconfig: explicit... |
1256 |
prop->expr->type == E_LIST)) |
1da177e4c Linux-2.6.12-rc2 |
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 |
return prop->expr->left.sym; return NULL; } const char *prop_get_type_name(enum prop_type type) { switch (type) { case P_PROMPT: return "prompt"; case P_COMMENT: return "comment"; case P_MENU: return "menu"; case P_DEFAULT: return "default"; case P_CHOICE: return "choice"; case P_SELECT: return "select"; |
237e3ad0f Kconfig: Introduc... |
1276 1277 |
case P_IMPLY: return "imply"; |
1da177e4c Linux-2.6.12-rc2 |
1278 1279 |
case P_RANGE: return "range"; |
59e89e3dd kconfig: save loc... |
1280 1281 |
case P_SYMBOL: return "symbol"; |
1da177e4c Linux-2.6.12-rc2 |
1282 1283 1284 1285 1286 |
case P_UNKNOWN: break; } return "unknown"; } |