2cb009cdd9
build subdirectory. This is not used now that everything is built at the top of kernel build directory. It will become mandatory for source/object files put out of kernel source tree to specify corresponding build subdirectory. Only ``no dots'' relative path is accepted as "buildprefix".
576 lines
11 KiB
C
576 lines
11 KiB
C
/* $NetBSD: util.c,v 1.20 2015/09/01 13:42:48 uebayasi Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)util.c 8.1 (Berkeley) 6/6/93
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: util.c,v 1.20 2015/09/01 13:42:48 uebayasi Exp $");
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <util.h>
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#include <err.h>
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#include "defs.h"
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static void cfgvxerror(const char *, int, const char *, va_list)
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__printflike(3, 0);
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static void cfgvxdbg(const char *, int, const char *, va_list)
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__printflike(3, 0);
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static void cfgvxwarn(const char *, int, const char *, va_list)
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__printflike(3, 0);
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static void cfgvxmsg(const char *, int, const char *, const char *, va_list)
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__printflike(4, 0);
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/************************************************************/
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/*
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* Prefix stack
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*/
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static void
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prefixlist_push(struct prefixlist *pl, const char *path)
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{
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struct prefix *prevpf = SLIST_FIRST(pl);
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struct prefix *pf;
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char *cp;
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pf = ecalloc(1, sizeof(struct prefix));
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if (prevpf != NULL) {
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cp = emalloc(strlen(prevpf->pf_prefix) + 1 +
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strlen(path) + 1);
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(void) sprintf(cp, "%s/%s", prevpf->pf_prefix, path);
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pf->pf_prefix = intern(cp);
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free(cp);
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} else
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pf->pf_prefix = intern(path);
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SLIST_INSERT_HEAD(pl, pf, pf_next);
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}
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static void
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prefixlist_pop(struct prefixlist *allpl, struct prefixlist *pl)
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{
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struct prefix *pf;
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if ((pf = SLIST_FIRST(pl)) == NULL) {
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cfgerror("no prefixes on the stack to pop");
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return;
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}
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SLIST_REMOVE_HEAD(pl, pf_next);
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/* Remember this prefix for emitting -I... directives later. */
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SLIST_INSERT_HEAD(allpl, pf, pf_next);
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}
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/*
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* Push a prefix onto the prefix stack.
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*/
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void
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prefix_push(const char *path)
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{
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prefixlist_push(&prefixes, path);
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}
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/*
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* Pop a prefix off the prefix stack.
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*/
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void
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prefix_pop(void)
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{
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prefixlist_pop(&allprefixes, &prefixes);
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}
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/*
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* Push a buildprefix onto the buildprefix stack.
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*/
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void
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buildprefix_push(const char *path)
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{
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prefixlist_push(&buildprefixes, path);
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}
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/*
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* Pop a buildprefix off the buildprefix stack.
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*/
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void
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buildprefix_pop(void)
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{
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prefixlist_pop(&allbuildprefixes, &buildprefixes);
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}
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/*
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* Prepend the source path to a file name.
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*/
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char *
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sourcepath(const char *file)
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{
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size_t len;
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char *cp;
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struct prefix *pf;
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pf = SLIST_EMPTY(&prefixes) ? NULL : SLIST_FIRST(&prefixes);
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if (pf != NULL && *pf->pf_prefix == '/')
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len = strlen(pf->pf_prefix) + 1 + strlen(file) + 1;
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else {
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len = strlen(srcdir) + 1 + strlen(file) + 1;
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if (pf != NULL)
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len += strlen(pf->pf_prefix) + 1;
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}
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cp = emalloc(len);
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if (pf != NULL) {
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if (*pf->pf_prefix == '/')
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(void) sprintf(cp, "%s/%s", pf->pf_prefix, file);
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else
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(void) sprintf(cp, "%s/%s/%s", srcdir,
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pf->pf_prefix, file);
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} else
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(void) sprintf(cp, "%s/%s", srcdir, file);
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return (cp);
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}
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/************************************************************/
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/*
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* Data structures
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*/
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/*
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* nvlist
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*/
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struct nvlist *
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newnv(const char *name, const char *str, void *ptr, long long i, struct nvlist *next)
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{
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struct nvlist *nv;
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nv = ecalloc(1, sizeof(*nv));
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nv->nv_next = next;
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nv->nv_name = name;
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nv->nv_str = str;
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nv->nv_ptr = ptr;
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nv->nv_num = i;
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return nv;
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}
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/*
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* Free an nvlist structure (just one).
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*/
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void
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nvfree(struct nvlist *nv)
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{
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free(nv);
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}
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/*
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* Free an nvlist (the whole list).
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*/
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void
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nvfreel(struct nvlist *nv)
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{
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struct nvlist *next;
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for (; nv != NULL; nv = next) {
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next = nv->nv_next;
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free(nv);
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}
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}
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struct nvlist *
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nvcat(struct nvlist *nv1, struct nvlist *nv2)
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{
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struct nvlist *nv;
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if (nv1 == NULL)
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return nv2;
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for (nv = nv1; nv->nv_next != NULL; nv = nv->nv_next);
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nv->nv_next = nv2;
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return nv1;
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}
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/*
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* Option definition lists
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*/
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struct defoptlist *
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defoptlist_create(const char *name, const char *val, const char *lintval)
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{
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struct defoptlist *dl;
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dl = emalloc(sizeof(*dl));
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dl->dl_next = NULL;
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dl->dl_name = name;
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dl->dl_value = val;
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dl->dl_lintvalue = lintval;
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dl->dl_obsolete = 0;
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dl->dl_depends = NULL;
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return dl;
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}
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void
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defoptlist_destroy(struct defoptlist *dl)
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{
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struct defoptlist *next;
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while (dl != NULL) {
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next = dl->dl_next;
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dl->dl_next = NULL;
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// XXX should we assert that dl->dl_deps is null to
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// be sure the deps have already been destroyed?
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free(dl);
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dl = next;
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}
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}
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struct defoptlist *
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defoptlist_append(struct defoptlist *dla, struct defoptlist *dlb)
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{
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struct defoptlist *dl;
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if (dla == NULL)
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return dlb;
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for (dl = dla; dl->dl_next != NULL; dl = dl->dl_next)
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;
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dl->dl_next = dlb;
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return dla;
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}
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/*
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* Locator lists
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*/
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struct loclist *
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loclist_create(const char *name, const char *string, long long num)
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{
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struct loclist *ll;
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ll = emalloc(sizeof(*ll));
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ll->ll_name = name;
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ll->ll_string = string;
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ll->ll_num = num;
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ll->ll_next = NULL;
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return ll;
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}
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void
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loclist_destroy(struct loclist *ll)
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{
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struct loclist *next;
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while (ll != NULL) {
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next = ll->ll_next;
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ll->ll_next = NULL;
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free(ll);
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ll = next;
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}
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}
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/*
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* Attribute lists
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*/
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struct attrlist *
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attrlist_create(void)
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{
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struct attrlist *al;
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al = emalloc(sizeof(*al));
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al->al_next = NULL;
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al->al_this = NULL;
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return al;
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}
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struct attrlist *
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attrlist_cons(struct attrlist *next, struct attr *a)
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{
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struct attrlist *al;
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al = attrlist_create();
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al->al_next = next;
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al->al_this = a;
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return al;
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}
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void
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attrlist_destroy(struct attrlist *al)
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{
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assert(al->al_next == NULL);
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assert(al->al_this == NULL);
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free(al);
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}
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void
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attrlist_destroyall(struct attrlist *al)
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{
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struct attrlist *next;
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while (al != NULL) {
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next = al->al_next;
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al->al_next = NULL;
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/* XXX should we make the caller guarantee this? */
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al->al_this = NULL;
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attrlist_destroy(al);
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al = next;
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}
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}
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/*
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* Condition expressions
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*/
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/*
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* Create an expression node.
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*/
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struct condexpr *
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condexpr_create(enum condexpr_types type)
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{
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struct condexpr *cx;
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cx = emalloc(sizeof(*cx));
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cx->cx_type = type;
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switch (type) {
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case CX_ATOM:
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cx->cx_atom = NULL;
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break;
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case CX_NOT:
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cx->cx_not = NULL;
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break;
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case CX_AND:
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cx->cx_and.left = NULL;
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cx->cx_and.right = NULL;
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break;
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case CX_OR:
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cx->cx_or.left = NULL;
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cx->cx_or.right = NULL;
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break;
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default:
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panic("condexpr_create: invalid expr type %d", (int)type);
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}
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return cx;
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}
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/*
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* Free an expression tree.
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*/
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void
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condexpr_destroy(struct condexpr *expr)
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{
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switch (expr->cx_type) {
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case CX_ATOM:
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/* nothing */
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break;
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case CX_NOT:
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condexpr_destroy(expr->cx_not);
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break;
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case CX_AND:
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condexpr_destroy(expr->cx_and.left);
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condexpr_destroy(expr->cx_and.right);
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break;
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case CX_OR:
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condexpr_destroy(expr->cx_or.left);
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condexpr_destroy(expr->cx_or.right);
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break;
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default:
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panic("condexpr_destroy: invalid expr type %d",
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(int)expr->cx_type);
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}
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free(expr);
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}
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/************************************************************/
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/*
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* Diagnostic messages
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*/
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void
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cfgdbg(const char *fmt, ...)
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{
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va_list ap;
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extern const char *yyfile;
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va_start(ap, fmt);
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cfgvxdbg(yyfile, currentline(), fmt, ap);
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va_end(ap);
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}
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void
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cfgwarn(const char *fmt, ...)
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{
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va_list ap;
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extern const char *yyfile;
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va_start(ap, fmt);
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cfgvxwarn(yyfile, currentline(), fmt, ap);
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va_end(ap);
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}
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void
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cfgxwarn(const char *file, int line, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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cfgvxwarn(file, line, fmt, ap);
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va_end(ap);
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}
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static void
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cfgvxdbg(const char *file, int line, const char *fmt, va_list ap)
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{
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cfgvxmsg(file, line, "debug: ", fmt, ap);
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}
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static void
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cfgvxwarn(const char *file, int line, const char *fmt, va_list ap)
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{
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cfgvxmsg(file, line, "warning: ", fmt, ap);
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}
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/*
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* External (config file) error. Complain, using current file
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* and line number.
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*/
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void
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cfgerror(const char *fmt, ...)
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{
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va_list ap;
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extern const char *yyfile;
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va_start(ap, fmt);
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cfgvxerror(yyfile, currentline(), fmt, ap);
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va_end(ap);
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}
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/*
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* Delayed config file error (i.e., something was wrong but we could not
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* find out about it until later).
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*/
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void
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cfgxerror(const char *file, int line, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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cfgvxerror(file, line, fmt, ap);
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va_end(ap);
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}
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/*
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* Internal form of error() and xerror().
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*/
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static void
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cfgvxerror(const char *file, int line, const char *fmt, va_list ap)
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{
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cfgvxmsg(file, line, "", fmt, ap);
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errors++;
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}
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/*
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* Internal error, abort.
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*/
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__dead void
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panic(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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(void)fprintf(stderr, "%s: panic: ", getprogname());
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(void)vfprintf(stderr, fmt, ap);
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(void)putc('\n', stderr);
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va_end(ap);
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exit(2);
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}
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/*
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* Internal form of error() and xerror().
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*/
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static void
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cfgvxmsg(const char *file, int line, const char *msgclass, const char *fmt,
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va_list ap)
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{
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(void)fprintf(stderr, "%s:%d: %s", file, line, msgclass);
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(void)vfprintf(stderr, fmt, ap);
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(void)putc('\n', stderr);
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}
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void
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autogen_comment(FILE *fp, const char *targetfile)
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{
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(void)fprintf(fp,
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"/*\n"
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|
" * MACHINE GENERATED: DO NOT EDIT\n"
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" *\n"
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" * %s, from \"%s\"\n"
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" */\n\n",
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targetfile, conffile);
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}
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