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 
55 #ifdef __linux__
56 #include "../queue.h"
57 #else
58 #include <sys/queue.h>
59 #endif
60 
61 #include "aicasm.h"
62 #include "aicasm_symbol.h"
63 #include "aicasm_insformat.h"
64 
65 static symbol_t *macro_symbol;
66 
67 static void add_macro_arg(const char *argtext, int position);
68 void mmerror(const char *string);
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 	STAILQ_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