1 %{
2 /*-
3  * Sub-parser for macro invocation in the Aic7xxx SCSI
4  * Host adapter sequencer assembler.
5  *
6  * SPDX-License-Identifier: BSD-3-Clause
7  *
8  * Copyright (c) 2001 Adaptec Inc.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions, and the following disclaimer,
16  *    without modification.
17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18  *    substantially similar to the "NO WARRANTY" disclaimer below
19  *    ("Disclaimer") and any redistribution must be conditioned upon
20  *    including a substantially similar Disclaimer requirement for further
21  *    binary redistribution.
22  * 3. Neither the names of the above-listed copyright holders nor the names
23  *    of any contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * Alternatively, this software may be distributed under the terms of the
27  * GNU General Public License ("GPL") version 2 as published by the Free
28  * Software Foundation.
29  *
30  * NO WARRANTY
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41  * POSSIBILITY OF SUCH DAMAGES.
42  *
43  * $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_gram.y#5 $
44  *
45  * $FreeBSD$
46  */
47 
48 #include <sys/types.h>
49 
50 #include <inttypes.h>
51 #include <regex.h>
52 #include <stdio.h>
53 #include <stdlib.h>
54 #include <string.h>
55 #include <sysexits.h>
56 #include <sys/queue.h>
57 
58 #include "aicasm.h"
59 #include "aicasm_symbol.h"
60 #include "aicasm_insformat.h"
61 
62 static symbol_t *macro_symbol;
63 
64 static void add_macro_arg(const char *argtext, int position);
65 
66 extern int mmlex(void);
67 extern int mmparse(void);
68 
69 %}
70 
71 %union {
72 	int		value;
73 	char		*str;
74 	symbol_t	*sym;
75 }
76 
77 
78 %token <str> T_ARG
79 
80 %token <sym> T_SYMBOL
81 
82 %type <value> macro_arglist
83 
84 %%
85 
86 macrocall:
87 	T_SYMBOL '('
88 	{
89 		macro_symbol = $1;
90 	}
91 	macro_arglist ')'
92 	{
93 		if (macro_symbol->info.macroinfo->narg != $4) {
94 			printf("Narg == %d", macro_symbol->info.macroinfo->narg);
95 			stop("Too few arguments for macro invocation",
96 			     EX_DATAERR);
97 			/* NOTREACHED */
98 		}
99 		macro_symbol = NULL;
100 		YYACCEPT;
101 	}
102 ;
103 
104 macro_arglist:
105 	{
106 		/* Macros can take 0 arguments */
107 		$$ = 0;
108 	}
109 |	T_ARG
110 	{
111 		$$ = 1;
112 		add_macro_arg($1, 1);
113 	}
114 |	macro_arglist ',' T_ARG
115 	{
116 		if ($1 == 0) {
117 			stop("Comma without preceding argument in arg list",
118 			     EX_DATAERR);
119 			/* NOTREACHED */
120 		}
121 		$$ = $1 + 1;
122 		add_macro_arg($3, $$);
123 	}
124 ;
125 
126 %%
127 
128 static void
129 add_macro_arg(const char *argtext, int argnum)
130 {
131 	struct macro_arg *marg;
132 	int i;
133 
134 	if (macro_symbol == NULL || macro_symbol->type != MACRO) {
135 		stop("Invalid current symbol for adding macro arg",
136 		     EX_SOFTWARE);
137 		/* NOTREACHED */
138 	}
139 	/*
140 	 * Macro Invocation.  Find the appropriate argument and fill
141 	 * in the replace ment text for this call.
142 	 */
143 	i = 0;
144 	STAILQ_FOREACH(marg, &macro_symbol->info.macroinfo->args, links) {
145 		i++;
146 		if (i == argnum)
147 			break;
148 	}
149 	if (marg == NULL) {
150 		stop("Too many arguments for macro invocation", EX_DATAERR);
151 		/* NOTREACHED */
152 	}
153 	marg->replacement_text = strdup(argtext);
154 	if (marg->replacement_text == NULL) {
155 		stop("Unable to replicate replacement text", EX_SOFTWARE);
156 		/* NOTREACHED */
157 	}
158 }
159 
160 static void
161 mmerror(const char *string)
162 {
163 	stop(string, EX_DATAERR);
164 }
165