freebsd-dev/sys/sys/abi_compat.h
Brooks Davis 562894f0dc Centralize compatability translation macros.
Copy the CP, PTRIN, etc macros from freebsd32.h into a sys/abi_compat.h
and replace existing definitation with includes where required. This
eliminates duplicate code and allows Linux and FreeBSD compatability
headers to be included in the same files.

Input from:	cem, jhb
Obtained from:	CheriBSD
MFC after:	2 weeks
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D24275
2020-04-14 20:30:48 +00:00

78 lines
2.4 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 Doug Rabson
* 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.
*
* $FreeBSD$
*/
#ifndef _COMPAT_H_
#define _COMPAT_H_
/*
* Helper macros for translating objects between different ABIs.
*/
#define PTRIN(v) (void *)(uintptr_t)(v)
#define PTROUT(v) (uintptr_t)(v)
#define CP(src, dst, fld) do { \
(dst).fld = (src).fld; \
} while (0)
#define CP2(src, dst, sfld, dfld) do { \
(dst).dfld = (src).sfld; \
} while (0)
#define PTRIN_CP(src, dst, fld) do { \
(dst).fld = PTRIN((src).fld); \
} while (0)
#define PTROUT_CP(src, dst, fld) do { \
(dst).fld = PTROUT((src).fld); \
} while (0)
#define TV_CP(src, dst, fld) do { \
CP((src).fld, (dst).fld, tv_sec); \
CP((src).fld, (dst).fld, tv_usec); \
} while (0)
#define TS_CP(src, dst, fld) do { \
CP((src).fld, (dst).fld, tv_sec); \
CP((src).fld, (dst).fld, tv_nsec); \
} while (0)
#define ITS_CP(src, dst) do { \
TS_CP((src), (dst), it_interval); \
TS_CP((src), (dst), it_value); \
} while (0)
#define BT_CP(src, dst, fld) do { \
CP((src).fld, (dst).fld, sec); \
*(uint64_t *)&(dst).fld.frac[0] = (src).fld.frac; \
} while (0)
#endif /* !_COMPAT_H_ */