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 int mmlex();
65 void mmerror(const char *string);
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, ¯o_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 void
mmerror(const char * string)159 mmerror(const char *string)
160 {
161 stop(string, EX_DATAERR);
162 }
163