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 #include "../queue.h"
56
57 #include "aicasm.h"
58 #include "aicasm_symbol.h"
59 #include "aicasm_insformat.h"
60
61 static symbol_t *macro_symbol;
62
63 static void add_macro_arg(const char *argtext, int position);
64 void mmerror(const char *string);
65
66 %}
67
68 %union {
69 int value;
70 char *str;
71 symbol_t *sym;
72 }
73
74
75 %token <str> T_ARG
76
77 %token <sym> T_SYMBOL
78
79 %type <value> macro_arglist
80
81 %%
82
83 macrocall:
84 T_SYMBOL '('
85 {
86 macro_symbol = $1;
87 }
88 macro_arglist ')'
89 {
90 if (macro_symbol->info.macroinfo->narg != $4) {
91 printf("Narg == %d", macro_symbol->info.macroinfo->narg);
92 stop("Too few arguments for macro invocation",
93 EX_DATAERR);
94 /* NOTREACHED */
95 }
96 macro_symbol = NULL;
97 YYACCEPT;
98 }
99 ;
100
101 macro_arglist:
102 {
103 /* Macros can take 0 arguments */
104 $$ = 0;
105 }
106 | T_ARG
107 {
108 $$ = 1;
109 add_macro_arg($1, 1);
110 }
111 | macro_arglist ',' T_ARG
112 {
113 if ($1 == 0) {
114 stop("Comma without preceding argument in arg list",
115 EX_DATAERR);
116 /* NOTREACHED */
117 }
118 $$ = $1 + 1;
119 add_macro_arg($3, $$);
120 }
121 ;
122
123 %%
124
125 static void
126 add_macro_arg(const char *argtext, int argnum)
127 {
128 struct macro_arg *marg;
129 int i;
130
131 if (macro_symbol == NULL || macro_symbol->type != MACRO) {
132 stop("Invalid current symbol for adding macro arg",
133 EX_SOFTWARE);
134 /* NOTREACHED */
135 }
136 /*
137 * Macro Invocation. Find the appropriate argument and fill
138 * in the replace ment text for this call.
139 */
140 i = 0;
141 STAILQ_FOREACH(marg, ¯o_symbol->info.macroinfo->args, links) {
142 i++;
143 if (i == argnum)
144 break;
145 }
146 if (marg == NULL) {
147 stop("Too many arguments for macro invocation", EX_DATAERR);
148 /* NOTREACHED */
149 }
150 marg->replacement_text = strdup(argtext);
151 if (marg->replacement_text == NULL) {
152 stop("Unable to replicate replacement text", EX_SOFTWARE);
153 /* NOTREACHED */
154 }
155 }
156
157 void
158 mmerror(const char *string)
159 {
160 stop(string, EX_DATAERR);
161 }