aicasm_macro_gram.y revision 102668 
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: head/sys/dev/aic7xxx/aicasm/aicasm_macro_gram.y 102668 2002-08-31 06:39:41Z gibbs $
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
69%}
70
71%union {
72	int		value;
73	char		*str;
74	symbol_t	*sym;
75}
76
77
78%token <str> T_ARG
79
80%token <sym> T_SYMBOL
81
82%type <value> macro_arglist
83
84%%
85
86macrocall:
87	T_SYMBOL '('
88	{
89		macro_symbol = $1;
90	}
91	macro_arglist ')'
92	{
93		if (macro_symbol->info.macroinfo->narg != $4) {
94			printf("Narg == %d", macro_symbol->info.macroinfo->narg);
95			stop("Too few arguments for macro invocation",
96			     EX_DATAERR);
97			/* NOTREACHED */
98		}
99		macro_symbol = NULL;
100		YYACCEPT;
101	}
102;
103
104macro_arglist:
105	{
106		/* Macros can take 0 arguments */
107		$$ = 0;
108	}
109|	T_ARG
110	{
111		$$ = 1;
112		add_macro_arg($1, 1);
113	}
114|	macro_arglist ',' T_ARG
115	{
116		if ($1 == 0) {
117			stop("Comma without preceeding argument in arg list",
118			     EX_DATAERR);
119			/* NOTREACHED */
120		}
121		$$ = $1 + 1;
122		add_macro_arg($3, $$);
123	}
124;
125
126%%
127
128static void
129add_macro_arg(const char *argtext, int argnum)
130{
131	struct macro_arg *marg;
132	int i;
133
134	if (macro_symbol == NULL || macro_symbol->type != MACRO) {
135		stop("Invalid current symbol for adding macro arg",
136		     EX_SOFTWARE);
137		/* NOTREACHED */
138	}
139	/*
140	 * Macro Invocation.  Find the appropriate argument and fill
141	 * in the replace ment text for this call.
142	 */
143	i = 0;
144	STAILQ_FOREACH(marg, &macro_symbol->info.macroinfo->args, links) {
145		i++;
146		if (i == argnum)
147			break;
148	}
149	if (marg == NULL) {
150		stop("Too many arguments for macro invocation", EX_DATAERR);
151		/* NOTREACHED */
152	}
153	marg->replacement_text = strdup(argtext);
154	if (marg->replacement_text == NULL) {
155		stop("Unable to replicate replacement text", EX_SOFTWARE);
156		/* NOTREACHED */
157	}
158}
159
160void
161mmerror(const char *string)
162{
163	stop(string, EX_DATAERR);
164}
165