Initial Commit

assembler/src/msg.c

@@ -0,0 +1,47 @@
+/*
+ * This file implements functions for
+ *  - checking instruction parameters for range
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "../inc/global.h"
+
+// reference to linenumber supplied by flex
+extern int yylineno;
+
+/*
+ * verbose output (if flag is set)
+ * msg: verbose message
+ */
+void yyverbose(char* msg) {
+	if (verbose) {
+		// if verbose flag is set
+
+		if (!isfirstrun) {
+			// output verbose messages in second run
+			printf("%s:% 3i: info: %s (\"%s\")\n", inputfile, yylineno, msg,
+					linebuf);
+		}
+	}
+}
+
+/*
+ * error handler
+ * msg: error message
+ */
+void yyerror(char *s) {
+
+	if ((!continueonerror) || (!isfirstrun)) {
+		// output error messages if either stop at error or in second run
+		fprintf(stderr, "%s:% 3i: error: %s (\"%s\")\n", inputfile, yylineno, s,
+				linebuf);
+	}
+
+	// set error happened flag
+	errorhappened = 1;
+	if (!continueonerror) {
+		// if stop on error, stop
+		destruct(EXIT_FAILURE);
+	}
+}