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[dragonfly.git] / usr.bin / xlint / lint2 / emit2.c
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1/* $NetBSD: emit2.c,v 1.2 1995/07/03 21:24:44 cgd Exp $ */
2
3/*
4 * Copyright (c) 1994, 1995 Jochen Pohl
5 * All Rights Reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Jochen Pohl for
18 * The NetBSD Project.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 *
33 * $NetBSD: emit2.c,v 1.2 1995/07/03 21:24:44 cgd Exp $
3268105e 34 * $DragonFly: src/usr.bin/xlint/lint2/emit2.c,v 1.5 2004/07/07 12:13:26 asmodai Exp $
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35 */
36
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37#include <err.h>
38
39#include "lint2.h"
40
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41static void outtype(type_t *);
42static void outdef(hte_t *, sym_t *);
43static void dumpname(hte_t *);
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44
45/*
46 * Write type into the output buffer.
47 */
48static void
3268105e 49outtype(type_t *tp)
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50{
51 int t, s, na;
52 tspec_t ts;
53 type_t **ap;
54
55 while (tp != NULL) {
56 if ((ts = tp->t_tspec) == INT && tp->t_isenum)
57 ts = ENUM;
58 switch (ts) {
59 case CHAR: t = 'C'; s = '\0'; break;
60 case SCHAR: t = 'C'; s = 's'; break;
61 case UCHAR: t = 'C'; s = 'u'; break;
62 case SHORT: t = 'S'; s = '\0'; break;
63 case USHORT: t = 'S'; s = 'u'; break;
64 case INT: t = 'I'; s = '\0'; break;
65 case UINT: t = 'I'; s = 'u'; break;
66 case LONG: t = 'L'; s = '\0'; break;
67 case ULONG: t = 'L'; s = 'u'; break;
68 case QUAD: t = 'Q'; s = '\0'; break;
69 case UQUAD: t = 'Q'; s = 'u'; break;
70 case FLOAT: t = 'D'; s = 's'; break;
71 case DOUBLE: t = 'D'; s = '\0'; break;
72 case LDOUBLE: t = 'D'; s = 'l'; break;
73 case VOID: t = 'V'; s = '\0'; break;
74 case PTR: t = 'P'; s = '\0'; break;
75 case ARRAY: t = 'A'; s = '\0'; break;
76 case ENUM: t = 'T'; s = 'e'; break;
77 case STRUCT: t = 'T'; s = 's'; break;
78 case UNION: t = 'T'; s = 'u'; break;
79 case FUNC:
80 if (tp->t_args != NULL && !tp->t_proto) {
81 t = 'f';
82 } else {
83 t = 'F';
84 }
85 s = '\0';
86 break;
87 default:
88 errx(1, "internal error: outtype() 1");
89 }
90 if (tp->t_const)
91 outchar('c');
92 if (tp->t_volatile)
93 outchar('v');
94 if (s != '\0')
95 outchar(s);
96 outchar(t);
97 if (ts == ARRAY) {
98 outint(tp->t_dim);
99 } else if (ts == ENUM || ts == STRUCT || ts == UNION) {
100 if (tp->t_istag) {
101 outint(1);
102 outname(tp->t_tag->h_name);
103 } else if (tp->t_istynam) {
104 outint(2);
105 outname(tp->t_tynam->h_name);
106 } else {
107 outint(0);
108 }
109 } else if (ts == FUNC && tp->t_args != NULL) {
110 na = 0;
111 for (ap = tp->t_args; *ap != NULL; ap++)
112 na++;
113 if (tp->t_vararg)
114 na++;
115 outint(na);
116 for (ap = tp->t_args; *ap != NULL; ap++)
117 outtype(*ap);
118 if (tp->t_vararg)
119 outchar('E');
120 }
121 tp = tp->t_subt;
122 }
123}
124
125/*
126 * Write a definition.
127 */
128static void
3268105e 129outdef(hte_t *hte, sym_t *sym)
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130{
131 /* reset output buffer */
132 outclr();
133
134 /* line number in C source file */
135 outint(0);
136
137 /* this is a definition */
138 outchar('d');
139
140 /* index of file where symbol was defined and line number of def. */
141 outint(0);
142 outchar('.');
143 outint(0);
144
145 /* flags */
146 if (sym->s_va) {
147 outchar('v'); /* varargs */
148 outint(sym->s_nva);
149 }
150 if (sym->s_scfl) {
151 outchar('S'); /* scanflike */
152 outint(sym->s_nscfl);
153 }
154 if (sym->s_prfl) {
155 outchar('P'); /* printflike */
156 outint(sym->s_nprfl);
157 }
158 /* definition or tentative definition */
159 outchar(sym->s_def == DEF ? 'd' : 't');
160 if (TP(sym->s_type)->t_tspec == FUNC) {
161 if (sym->s_rval)
162 outchar('r'); /* fkt. has return value */
163 if (sym->s_osdef)
164 outchar('o'); /* old style definition */
165 }
166 outchar('u'); /* used (no warning if not used) */
167
168 /* name */
169 outname(hte->h_name);
170
171 /* type */
172 outtype(TP(sym->s_type));
173}
174
175/*
176 * Write the first definition of a name into the lint library.
177 */
178static void
3268105e 179dumpname(hte_t *hte)
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180{
181 sym_t *sym, *def;
182
183 /* static and undefined symbols are not written */
184 if (hte->h_static || !hte->h_def)
185 return;
186
187 /*
188 * If there is a definition, write it. Otherwise write a tentative
189 * definition. This is neccessary because more than one tentative
190 * definition is allowed (except with sflag).
191 */
192 def = NULL;
193 for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) {
194 if (sym->s_def == DEF) {
195 def = sym;
196 break;
197 }
198 if (sym->s_def == TDEF && def == NULL)
199 def = sym;
200 }
201 if (def == NULL)
202 errx(1, "internal error: dumpname() %s", hte->h_name);
203
204 outdef(hte, def);
205}
206
207/*
208 * Write a new lint library.
209 */
210void
3268105e 211outlib(const char *name)
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212{
213 /* Open of output file and initialisation of the output buffer */
214 outopen(name);
215
216 /* write name of lint library */
217 outsrc(name);
218
219 /* name of lint lib has index 0 */
220 outclr();
221 outint(0);
222 outchar('s');
223 outstrg(name);
224
225 /* write all definitions with external linkage */
226 forall(dumpname);
227
228 /* close the output */
229 outclose();
230}