168 lines
4.4 KiB
C
168 lines
4.4 KiB
C
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/*-
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* Copyright (c) 2009 Joseph Koshy
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $Id$
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*/
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/**
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** Miscellanous definitions needed by multiple components.
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**/
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#ifndef _ELFTC_H
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#define _ELFTC_H
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#ifndef NULL
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#define NULL ((void *) 0)
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#endif
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#ifndef offsetof
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#define offsetof(T, M) ((int) &((T*) 0) -> M)
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#endif
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/*
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* Supply macros missing from <sys/queue.h>
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*/
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#ifndef STAILQ_FOREACH_SAFE
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#define STAILQ_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = STAILQ_FIRST((head)); \
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(var) && ((tvar) = STAILQ_NEXT((var), field), 1); \
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(var) = (tvar))
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#endif
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#ifndef STAILQ_LAST
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#define STAILQ_LAST(head, type, field) \
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(STAILQ_EMPTY((head)) ? \
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NULL : \
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((struct type *)(void *) \
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((char *)((head)->stqh_last) - offsetof(struct type, field))))
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#endif
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#ifndef TAILQ_FOREACH_SAFE
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#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
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for ((var) = TAILQ_FIRST((head)); \
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(var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
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(var) = (tvar))
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#endif
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/*
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* VCS Ids.
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*/
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#ifndef ELFTC_VCSID
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#if defined(__FreeBSD__)
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#define ELFTC_VCSID(ID) __FBSDID(ID)
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#endif
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#if defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)
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#define ELFTC_VCSID(ID) /**/
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#endif
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#if defined(__NetBSD__)
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#define ELFTC_VCSID(ID) __RCSID(ID)
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#endif
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#endif /* ELFTC_VCSID */
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/*
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* Provide an equivalent for getprogname(3).
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*/
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#ifndef ELFTC_GETPROGNAME
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__minix)
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#include <stdlib.h>
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#define ELFTC_GETPROGNAME() getprogname()
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#endif /* defined(__FreeBSD__) || defined(__NetBSD__) || defined(__minix) */
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#if defined(__linux__)
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/*
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* GLIBC based systems have a global 'char *' pointer referencing
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* the executable's name.
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*/
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extern const char *program_invocation_short_name;
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#define ELFTC_GETPROGNAME() program_invocation_short_name
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#endif /* __linux__ */
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#endif /* ELFTC_GETPROGNAME */
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/**
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** Per-OS configuration.
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**/
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#if defined(__linux__)
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#include <endian.h>
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#define ELFTC_BYTE_ORDER __BYTE_ORDER
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#define ELFTC_BYTE_ORDER_LITTLE_ENDIAN __LITTLE_ENDIAN
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#define ELFTC_BYTE_ORDER_BIG_ENDIAN __BIG_ENDIAN
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/*
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* Debian GNU/Linux is missing strmode(3).
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*/
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#define ELFTC_HAVE_STRMODE 0
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/* Whether we need to supply {be,le}32dec. */
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#define ELFTC_NEED_BYTEORDER_EXTENSIONS 1
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#define roundup2 roundup
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#endif /* __linux__ */
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#if defined(__FreeBSD__)
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#include <sys/endian.h>
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#define ELFTC_BYTE_ORDER _BYTE_ORDER
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#define ELFTC_BYTE_ORDER_LITTLE_ENDIAN _LITTLE_ENDIAN
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#define ELFTC_BYTE_ORDER_BIG_ENDIAN _BIG_ENDIAN
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#define ELFTC_HAVE_STRMODE 1
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#endif /* __FreeBSD__ */
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#if defined(__NetBSD__) || defined(__minix)
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#include <sys/endian.h>
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#define ELFTC_BYTE_ORDER _BYTE_ORDER
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#define ELFTC_BYTE_ORDER_LITTLE_ENDIAN _LITTLE_ENDIAN
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#define ELFTC_BYTE_ORDER_BIG_ENDIAN _BIG_ENDIAN
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#define ELFTC_HAVE_STRMODE 1
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#endif /* __NetBSD __ || __minix */
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#endif /* _ELFTC_H */
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