1 %{
2 /*	$OpenBSD: aicasm_macro_gram.y,v 1.3 2006/12/23 21:08:01 krw Exp $	*/
3 /*	$NetBSD: aicasm_macro_gram.y,v 1.1 2003/04/19 19:26:11 fvdl Exp $	*/
4 
5 /*
6  * Sub-parser for macro invocation in the Aic7xxx SCSI
7  * Host adapter sequencer assembler.
8  *
9  * Copyright (c) 2001 Adaptec Inc.
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions, and the following disclaimer,
17  *    without modification.
18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19  *    substantially similar to the "NO WARRANTY" disclaimer below
20  *    ("Disclaimer") and any redistribution must be conditioned upon
21  *    including a substantially similar Disclaimer requirement for further
22  *    binary redistribution.
23  * 3. Neither the names of the above-listed copyright holders nor the names
24  *    of any contributors may be used to endorse or promote products derived
25  *    from this software without specific prior written permission.
26  *
27  * Alternatively, this software may be distributed under the terms of the
28  * GNU General Public License ("GPL") version 2 as published by the Free
29  * Software Foundation.
30  *
31  * NO WARRANTY
32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42  * POSSIBILITY OF SUCH DAMAGES.
43  *
44  * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_macro_gram.y,v 1.2 2002/08/31 06:39:40 gibbs Exp $
45  */
46 
47 #include <sys/types.h>
48 
49 #include <inttypes.h>
50 #include <regex.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <string.h>
54 #include <sysexits.h>
55 
56 #ifdef __linux__
57 #include "../queue.h"
58 #else
59 #include <sys/queue.h>
60 #endif
61 
62 #include "aicasm.h"
63 #include "aicasm_symbol.h"
64 #include "aicasm_insformat.h"
65 
66 static symbol_t *macro_symbol;
67 
68 static void add_macro_arg(const char *argtext, int position);
69 
70 %}
71 
72 %union {
73 	int		value;
74 	char		*str;
75 	symbol_t	*sym;
76 }
77 
78 
79 %token <str> T_ARG
80 
81 %token <sym> T_SYMBOL
82 
83 %type <value> macro_arglist
84 
85 %%
86 
87 macrocall:
88 	T_SYMBOL '('
89 	{
90 		macro_symbol = $1;
91 	}
92 	macro_arglist ')'
93 	{
94 		if (macro_symbol->info.macroinfo->narg != $4) {
95 			printf("Narg == %d", macro_symbol->info.macroinfo->narg);
96 			stop("Too few arguments for macro invocation",
97 			     EX_DATAERR);
98 			/* NOTREACHED */
99 		}
100 		macro_symbol = NULL;
101 		YYACCEPT;
102 	}
103 ;
104 
105 macro_arglist:
106 	{
107 		/* Macros can take 0 arguments */
108 		$$ = 0;
109 	}
110 |	T_ARG
111 	{
112 		$$ = 1;
113 		add_macro_arg($1, 1);
114 	}
115 |	macro_arglist ',' T_ARG
116 	{
117 		if ($1 == 0) {
118 			stop("Comma without preceding argument in arg list",
119 			     EX_DATAERR);
120 			/* NOTREACHED */
121 		}
122 		$$ = $1 + 1;
123 		add_macro_arg($3, $$);
124 	}
125 ;
126 
127 %%
128 
129 static void
130 add_macro_arg(const char *argtext, int argnum)
131 {
132 	struct macro_arg *marg;
133 	int i;
134 
135 	if (macro_symbol == NULL || macro_symbol->type != MACRO) {
136 		stop("Invalid current symbol for adding macro arg",
137 		     EX_SOFTWARE);
138 		/* NOTREACHED */
139 	}
140 	/*
141 	 * Macro Invocation.  Find the appropriate argument and fill
142 	 * in the replace ment text for this call.
143 	 */
144 	i = 0;
145 	TAILQ_FOREACH(marg, &macro_symbol->info.macroinfo->args, links) {
146 		i++;
147 		if (i == argnum)
148 			break;
149 	}
150 	if (marg == NULL) {
151 		stop("Too many arguments for macro invocation", EX_DATAERR);
152 		/* NOTREACHED */
153 	}
154 	marg->replacement_text = strdup(argtext);
155 	if (marg->replacement_text == NULL) {
156 		stop("Unable to replicate replacement text", EX_SOFTWARE);
157 		/* NOTREACHED */
158 	}
159 }
160 
161 void
162 mmerror(const char *string)
163 {
164 	stop(string, EX_DATAERR);
165 }
166