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/* $OpenBSD: emit2.c,v 1.4 2003/11/08 19:17:29 jmc Exp $ */
/* $NetBSD: emit2.c,v 1.2 1995/07/03 21:24:44 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Jochen Pohl
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jochen Pohl for
* The NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
static char rcsid[] = "$OpenBSD: emit2.c,v 1.4 2003/11/08 19:17:29 jmc Exp $";
#endif
#include <err.h>
#include "lint2.h"
static void outtype(type_t *);
static void outdef(hte_t *, sym_t *);
static void dumpname(hte_t *);
/*
* Write type into the output buffer.
*/
static void
outtype(tp)
type_t *tp;
{
int t, s, na;
tspec_t ts;
type_t **ap;
while (tp != NULL) {
if ((ts = tp->t_tspec) == INT && tp->t_isenum)
ts = ENUM;
switch (ts) {
case CHAR: t = 'C'; s = '\0'; break;
case SCHAR: t = 'C'; s = 's'; break;
case UCHAR: t = 'C'; s = 'u'; break;
case SHORT: t = 'S'; s = '\0'; break;
case USHORT: t = 'S'; s = 'u'; break;
case INT: t = 'I'; s = '\0'; break;
case UINT: t = 'I'; s = 'u'; break;
case LONG: t = 'L'; s = '\0'; break;
case ULONG: t = 'L'; s = 'u'; break;
case QUAD: t = 'Q'; s = '\0'; break;
case UQUAD: t = 'Q'; s = 'u'; break;
case FLOAT: t = 'D'; s = 's'; break;
case DOUBLE: t = 'D'; s = '\0'; break;
case LDOUBLE: t = 'D'; s = 'l'; break;
case VOID: t = 'V'; s = '\0'; break;
case PTR: t = 'P'; s = '\0'; break;
case ARRAY: t = 'A'; s = '\0'; break;
case ENUM: t = 'T'; s = 'e'; break;
case STRUCT: t = 'T'; s = 's'; break;
case UNION: t = 'T'; s = 'u'; break;
case FUNC:
if (tp->t_args != NULL && !tp->t_proto) {
t = 'f';
} else {
t = 'F';
}
s = '\0';
break;
default:
errx(1, "internal error: outtype() 1");
}
if (tp->t_const)
outchar('c');
if (tp->t_volatile)
outchar('v');
if (s != '\0')
outchar(s);
outchar(t);
if (ts == ARRAY) {
outint(tp->t_dim);
} else if (ts == ENUM || ts == STRUCT || ts == UNION) {
if (tp->t_istag) {
outint(1);
outname(tp->t_tag->h_name);
} else if (tp->t_istynam) {
outint(2);
outname(tp->t_tynam->h_name);
} else {
outint(0);
}
} else if (ts == FUNC && tp->t_args != NULL) {
na = 0;
for (ap = tp->t_args; *ap != NULL; ap++)
na++;
if (tp->t_vararg)
na++;
outint(na);
for (ap = tp->t_args; *ap != NULL; ap++)
outtype(*ap);
if (tp->t_vararg)
outchar('E');
}
tp = tp->t_subt;
}
}
/*
* Write a definition.
*/
static void
outdef(hte, sym)
hte_t *hte;
sym_t *sym;
{
/* reset output buffer */
outclr();
/* line number in C source file */
outint(0);
/* this is a definition */
outchar('d');
/* index of file where symbol was defined and line number of def. */
outint(0);
outchar('.');
outint(0);
/* flags */
if (sym->s_va) {
outchar('v'); /* varargs */
outint(sym->s_nva);
}
if (sym->s_scfl) {
outchar('S'); /* scanflike */
outint(sym->s_nscfl);
}
if (sym->s_prfl) {
outchar('P'); /* printflike */
outint(sym->s_nprfl);
}
/* definition or tentative definition */
outchar(sym->s_def == DEF ? 'd' : 't');
if (TP(sym->s_type)->t_tspec == FUNC) {
if (sym->s_rval)
outchar('r'); /* fkt. has return value */
if (sym->s_osdef)
outchar('o'); /* old style definition */
}
outchar('u'); /* used (no warning if not used) */
/* name */
outname(hte->h_name);
/* type */
outtype(TP(sym->s_type));
}
/*
* Write the first definition of a name into the lint library.
*/
static void
dumpname(hte)
hte_t *hte;
{
sym_t *sym, *def;
/* static and undefined symbols are not written */
if (hte->h_static || !hte->h_def)
return;
/*
* If there is a definition, write it. Otherwise write a tentative
* definition. This is necessary because more than one tentative
* definition is allowed (except with sflag).
*/
def = NULL;
for (sym = hte->h_syms; sym != NULL; sym = sym->s_nxt) {
if (sym->s_def == DEF) {
def = sym;
break;
}
if (sym->s_def == TDEF && def == NULL)
def = sym;
}
if (def == NULL)
errx(1, "internal error: dumpname() %s", hte->h_name);
outdef(hte, def);
}
/*
* Write a new lint library.
*/
void
outlib(name)
const char *name;
{
/* Open of output file and initialisation of the output buffer */
outopen(name);
/* write name of lint library */
outsrc(name);
/* name of lint lib has index 0 */
outclr();
outint(0);
outchar('s');
outstrg(name);
/* write all definitions with external linkage */
forall(dumpname);
/* close the output */
outclose();
}
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