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, ¯o_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 }