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