patch-2.4.19 linux-2.4.19/drivers/scsi/aic7xxx/aicasm/aicasm_macro_scan.l

• Lines: 155
• Date: Fri Aug 2 17:39:44 2002
• Orig file: linux-2.4.18/drivers/scsi/aic7xxx/aicasm/aicasm_macro_scan.l
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/drivers/scsi/aic7xxx/aicasm/aicasm_macro_scan.l linux-2.4.19/drivers/scsi/aic7xxx/aicasm/aicasm_macro_scan.l
@@ -0,0 +1,154 @@
+%{
+/*
+ * Sub-Lexical Analyzer for macro invokation in 
+ * the Aic7xxx SCSI Host adapter sequencer assembler.
+ *
+ * Copyright (c) 2001 Adaptec Inc.
+ * 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,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * 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 MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ *
+ * $Id$
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <regex.h>
+#include <stdio.h>
+#include <string.h>
+#include <sysexits.h>
+#ifdef __linux__
+#include "../queue.h"
+#else
+#include <sys/queue.h>
+#endif
+
+#include "aicasm.h"
+#include "aicasm_symbol.h"
+#include "aicasm_macro_gram.h"
+
+#define MAX_STR_CONST 4096
+static char string_buf[MAX_STR_CONST];
+static char *string_buf_ptr;
+static int  parren_count;
+static char buf[255];
+%}
+
+WORD		[A-Za-z_][-A-Za-z_0-9]*
+SPACE		[ \t]+
+MCARG		[^(), \t]+
+
+%x ARGLIST
+
+%%
+\n			{
+				++yylineno;
+			}
+<ARGLIST>{SPACE}	;
+<ARGLIST>\(		{
+				parren_count++;
+				if (parren_count == 1) {
+					string_buf_ptr = string_buf;
+					return ('(');
+				}
+				*string_buf_ptr++ = '(';
+			}
+<ARGLIST>\)		{
+				if (parren_count == 1) {
+					if (string_buf_ptr != string_buf) {
+						/*
+						 * Return an argument and
+						 * rescan this parren so we
+						 * can return it as well.
+						 */
+						*string_buf_ptr = '\0';
+						mmlval.str = string_buf;
+						string_buf_ptr = string_buf;
+						unput(')');
+						return T_ARG;
+					}
+					BEGIN INITIAL;
+					return (')');
+				}
+				parren_count--;
+				*string_buf_ptr++ = ')';
+			}
+<ARGLIST>{MCARG}	{
+				char *yptr;
+
+				yptr = mmtext;
+				while (*yptr)
+					*string_buf_ptr++ = *yptr++;
+			}
+<ARGLIST>\,		{
+				if (string_buf_ptr != string_buf) {
+					/*
+					 * Return an argument and
+					 * rescan this comma so we
+					 * can return it as well.
+					 */
+					*string_buf_ptr = '\0';
+					mmlval.str = string_buf;
+					string_buf_ptr = string_buf;
+					unput(',');
+					return T_ARG;
+				}
+				return ',';
+			}
+{WORD}[(]		{
+				/* May be a symbol or a macro invocation. */
+				mmlval.sym = symtable_get(mmtext);
+				if (mmlval.sym->type != MACRO) {
+					stop("Expecting Macro Name",
+					     EX_DATAERR);
+				}
+				unput('(');
+				parren_count = 0;
+				BEGIN ARGLIST;
+				return T_SYMBOL;
+			}
+.			{ 
+				snprintf(buf, sizeof(buf), "Invalid character "
+					 "'%c'", mmtext[0]);
+				stop(buf, EX_DATAERR);
+			}
+%%
+
+int
+mmwrap()
+{
+	stop("EOF encountered in macro call", EX_DATAERR);
+}