aicasm_macro_gram.y revision 1.3 
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
65static symbol_t *macro_symbol;
66
67static void add_macro_arg(const char *argtext, int position);
68
69int 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
88macrocall:
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
106macro_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
130static void
131add_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, &macro_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
162void
163mmerror(const char *string)
164{
165	stop(string, EX_DATAERR);
166}
167