Current Path : /usr/include/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //usr/include/linker_set.h |
/*- * Copyright (c) 1999 John D. Polstra * Copyright (c) 1999,2001 Peter Wemm <peter@FreeBSD.org> * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. * * $FreeBSD: release/9.1.0/sys/sys/linker_set.h 215701 2010-11-22 19:32:54Z dim $ */ #ifndef _SYS_LINKER_SET_H_ #define _SYS_LINKER_SET_H_ #ifndef _SYS_CDEFS_H_ #error this file needs sys/cdefs.h as a prerequisite #endif /* * The following macros are used to declare global sets of objects, which * are collected by the linker into a `linker_set' as defined below. * For ELF, this is done by constructing a separate segment for each set. */ /* * Private macros, not to be used outside this header file. */ #ifdef __GNUCLIKE___SECTION #define __MAKE_SET(set, sym) \ __GLOBL(__CONCAT(__start_set_,set)); \ __GLOBL(__CONCAT(__stop_set_,set)); \ static void const * const __set_##set##_sym_##sym \ __section("set_" #set) __used = &sym #else /* !__GNUCLIKE___SECTION */ #ifndef lint #error this file needs to be ported to your compiler #endif /* lint */ #define __MAKE_SET(set, sym) extern void const * const (__set_##set##_sym_##sym) #endif /* __GNUCLIKE___SECTION */ /* * Public macros. */ #define TEXT_SET(set, sym) __MAKE_SET(set, sym) #define DATA_SET(set, sym) __MAKE_SET(set, sym) #define BSS_SET(set, sym) __MAKE_SET(set, sym) #define ABS_SET(set, sym) __MAKE_SET(set, sym) #define SET_ENTRY(set, sym) __MAKE_SET(set, sym) /* * Initialize before referring to a given linker set. */ #define SET_DECLARE(set, ptype) \ extern ptype *__CONCAT(__start_set_,set); \ extern ptype *__CONCAT(__stop_set_,set) #define SET_BEGIN(set) \ (&__CONCAT(__start_set_,set)) #define SET_LIMIT(set) \ (&__CONCAT(__stop_set_,set)) /* * Iterate over all the elements of a set. * * Sets always contain addresses of things, and "pvar" points to words * containing those addresses. Thus is must be declared as "type **pvar", * and the address of each set item is obtained inside the loop by "*pvar". */ #define SET_FOREACH(pvar, set) \ for (pvar = SET_BEGIN(set); pvar < SET_LIMIT(set); pvar++) #define SET_ITEM(set, i) \ ((SET_BEGIN(set))[i]) /* * Provide a count of the items in a set. */ #define SET_COUNT(set) \ (SET_LIMIT(set) - SET_BEGIN(set)) #endif /* _SYS_LINKER_SET_H_ */