1 %{
2 /* $NetBSD: aicasm_macro_gram.y,v 1.3 2020/06/27 16:19:38 jdolecek Exp $ */
3
4 /*
5 * Sub-parser for macro invocation in the Aic7xxx SCSI
6 * Host adapter sequencer assembler.
7 *
8 * Copyright (c) 2001 Adaptec Inc.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 *
43 * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_macro_gram.y,v 1.2 2002/08/31 06:39:40 gibbs Exp $
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
69 int yylex(void);
70
71 %}
72
73 %union {
74 int value;
75 char *str;
76 symbol_t *sym;
77 }
78
79
80 %token <str> T_ARG
81
82 %token <sym> T_SYMBOL
83
84 %type <value> macro_arglist
85
86 %%
87
88 macrocall:
89 T_SYMBOL '('
90 {
91 macro_symbol = $1;
92 }
93 macro_arglist ')'
94 {
95 if (macro_symbol->info.macroinfo->narg != $4) {
96 printf("Narg == %d", macro_symbol->info.macroinfo->narg);
97 stop("Too few arguments for macro invocation",
98 EX_DATAERR);
99 /* NOTREACHED */
100 }
101 macro_symbol = NULL;
102 YYACCEPT;
103 }
104 ;
105
106 macro_arglist:
107 {
108 /* Macros can take 0 arguments */
109 $$ = 0;
110 }
111 | T_ARG
112 {
113 $$ = 1;
114 add_macro_arg($1, 1);
115 }
116 | macro_arglist ',' T_ARG
117 {
118 if ($1 == 0) {
119 stop("Comma without preceding argument in arg list",
120 EX_DATAERR);
121 /* NOTREACHED */
122 }
123 $$ = $1 + 1;
124 add_macro_arg($3, $$);
125 }
126 ;
127
128 %%
129
130 static void
131 add_macro_arg(const char *argtext, int argnum)
132 {
133 struct macro_arg *marg;
134 int i;
135
136 if (macro_symbol == NULL || macro_symbol->type != MACRO) {
137 stop("Invalid current symbol for adding macro arg",
138 EX_SOFTWARE);
139 /* NOTREACHED */
140 }
141 /*
142 * Macro Invocation. Find the appropriate argument and fill
143 * in the replace ment text for this call.
144 */
145 i = 0;
146 STAILQ_FOREACH(marg, ¯o_symbol->info.macroinfo->args, links) {
147 i++;
148 if (i == argnum)
149 break;
150 }
151 if (marg == NULL) {
152 stop("Too many arguments for macro invocation", EX_DATAERR);
153 /* NOTREACHED */
154 }
155 marg->replacement_text = strdup(argtext);
156 if (marg->replacement_text == NULL) {
157 stop("Unable to replicate replacement text", EX_SOFTWARE);
158 /* NOTREACHED */
159 }
160 }
161
162 void
mmerror(const char * string)163 mmerror(const char *string)
164 {
165 stop(string, EX_DATAERR);
166 }
167