Yasm Assembler mainline development tree (ffmpeg 依赖)
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/* $IdPath$
* Section utility functions
*
* Copyright (C) 2001 Peter Johnson
*
* This file is part of YASM.
*
* YASM is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* YASM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "util.h"
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <string.h>
#endif
#include <libintl.h>
#define _(String) gettext(String)
#ifdef gettext_noop
#define N_(String) gettext_noop(String)
#else
#define N_(String) (String)
#endif
#include "globals.h"
#include "errwarn.h"
#include "expr.h"
#include "bytecode.h"
#include "section.h"
#include "objfmt.h"
RCSID("$IdPath$");
section *
sections_initialize(sectionhead *headp, objfmt *of)
{
section *s;
/* Initialize linked list */
STAILQ_INIT(headp);
/* Add an initial "default" section to the list */
s = xcalloc(1, sizeof(section));
STAILQ_INSERT_TAIL(headp, s, link);
/* Initialize default section */
s->type = SECTION_GENERAL;
s->name = xstrdup(of->default_section_name);
bytecodes_initialize(&s->bc);
return s;
}
section *
sections_switch(sectionhead *headp, objfmt *of, const char *name)
{
section *s, *sp;
/* Search through current sections to see if we already have one with
* that name.
*/
s = (section *)NULL;
STAILQ_FOREACH(sp, headp, link) {
if (strcmp(sp->name, name) == 0)
s = sp;
}
if (s)
return s;
/* No: we have to allocate and create a new one. */
/* But first check with objfmt to see if the name is valid.
* If it isn't, error and just return the default (first) section.
*/
if (!of->is_valid_section(name)) {
Error(_("Invalid section name: %s"), name);
return STAILQ_FIRST(headp);
}
/* Okay, the name is valid; now allocate and initialize */
s = xcalloc(1, sizeof(section));
STAILQ_INSERT_TAIL(headp, s, link);
s->type = SECTION_GENERAL;
s->name = xstrdup(name);
bytecodes_initialize(&s->bc);
return s;
}