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authorIan Moffett <ian@osmora.org>2024-05-17 13:18:01 -0400
committerIan Moffett <ian@osmora.org>2024-05-17 13:18:01 -0400
commitd164ed5baac60f21e0435ae49d20009ee8cd6dc1 (patch)
treefbb4b9ae732c7a3b99723fe4f34449db78a524f2 /tools/kconf/grammer.y
parent406d49ec0346e4c8a55109fd698e8364f16cfada (diff)
build: Introduce kconf for kernel configuration
The kernel will be configured by a per-arch config file. The config file for the AMD64 port exists at sys/arch/amd64/conf/GENERIC Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'tools/kconf/grammer.y')
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1 files changed, 86 insertions, 0 deletions
diff --git a/tools/kconf/grammer.y b/tools/kconf/grammer.y
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+/*
+ * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+%{
+#include <stdio.h>
+#include <stdlib.h>
+
+int yylex();
+int yyerror(char *s);
+%}
+
+%union {
+ char *str;
+ int num;
+}
+
+%token OPTION SETVAL
+%token <str> IDENTIFIER
+%token YES NO
+%token NUMBER STRING
+
+%type <str> str STRING
+%type <num> yes_or_no YES NO
+%type <num> num NUMBER
+
+%%
+
+input:
+ | line input
+ ;
+
+line: OPTION IDENTIFIER yes_or_no {
+ printf("-D__%s=%d ", $2, $3);
+ free($2);
+ }
+ | SETVAL IDENTIFIER num {
+ printf("-D__%s=%d " , $2, $3);
+ free($2);
+ }
+ | SETVAL IDENTIFIER str {
+ printf("-D__%s=%s ", $2, $3);
+ free($2);
+ free($3);
+ }
+
+yes_or_no: YES { $$ = 1; }
+ | NO { $$ = 0; }
+ ;
+
+num: NUMBER { $$ = $1; }
+str: STRING { $$ = $1; }
+
+%%
+
+int
+main(void)
+{
+ yyparse();
+ printf("\n");
+}