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Centralize compatability translation macros.

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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
This commit is contained in:
Brooks Davis 2020-04-14 20:30:48 +00:00
parent c23ca622a2
commit 562894f0dc
14 changed files with 101 additions and 111 deletions
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10
sys/amd64/linux/linux.h
View File

@ -32,6 +32,8 @@
#ifndef _AMD64_LINUX_H_
#define _AMD64_LINUX_H_
#include <sys/abi_compat.h>
#include <compat/linux/linux.h>
#include <amd64/linux/linux_syscall.h>
@ -39,14 +41,6 @@
#define LINUX_DTRACE linuxulator
#define PTRIN(v) (void *)(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)
/*
* Provide a separate set of types for the Linux types.
*/

10
sys/amd64/linux32/linux.h
View File

@ -35,6 +35,8 @@
#ifndef _AMD64_LINUX_H_
#define _AMD64_LINUX_H_
#include <sys/abi_compat.h>
#include <compat/linux/linux.h>
#include <amd64/linux32/linux32_syscall.h>
@ -52,14 +54,6 @@
#define LINUX32_MAXSSIZ (64 * 1024 * 1024) /* 64MB */
#define LINUX32_MAXVMEM 0 /* Unlimited */
#define PTRIN(v) (void *)(uintptr_t)(v)
#define PTROUT(v) (l_uintptr_t)(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)
/*
* Provide a separate set of types for the Linux types.
*/

10
sys/arm64/linux/linux.h
View File

@ -31,19 +31,13 @@
#ifndef _ARM64_LINUX_H_
#define _ARM64_LINUX_H_
#include <sys/abi_compat.h>
#include <compat/linux/linux.h>
#include <arm64/linux/linux_syscall.h>
#define LINUX_DTRACE linuxulator
#define PTRIN(v) (void *)(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)
/* Provide a separate set of types for the Linux types */
typedef int32_t l_int;
typedef int64_t l_long;

26
sys/compat/freebsd32/freebsd32.h
View File

@ -31,19 +31,11 @@
#ifndef _COMPAT_FREEBSD32_FREEBSD32_H_
#define _COMPAT_FREEBSD32_FREEBSD32_H_
#include <sys/abi_compat.h>
#include <sys/procfs.h>
#include <sys/socket.h>
#include <sys/user.h>
#define PTRIN(v) (void *)(uintptr_t) (v)
#define PTROUT(v) (u_int32_t)(uintptr_t) (v)
#define CP(src,dst,fld) do { (dst).fld = (src).fld; } 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)
/*
* i386 is the only arch with a 32-bit time_t
*/
@ -57,37 +49,21 @@ struct timeval32 {
time32_t tv_sec;
int32_t tv_usec;
};
#define TV_CP(src,dst,fld) do { \
CP((src).fld,(dst).fld,tv_sec); \
CP((src).fld,(dst).fld,tv_usec); \
} while (0)
struct timespec32 {
time32_t tv_sec;
int32_t tv_nsec;
};
#define TS_CP(src,dst,fld) do { \
CP((src).fld,(dst).fld,tv_sec); \
CP((src).fld,(dst).fld,tv_nsec); \
} while (0)
struct itimerspec32 {
struct timespec32 it_interval;
struct timespec32 it_value;
};
#define ITS_CP(src, dst) do { \
TS_CP((src), (dst), it_interval); \
TS_CP((src), (dst), it_value); \
} while (0)
struct bintime32 {
time32_t sec;
uint32_t frac[2];
};
#define BT_CP(src, dst, fld) do { \
CP((src).fld, (dst).fld, sec); \
*(uint64_t *)&(dst).fld.frac[0] = (src).fld.frac; \
} while (0)
struct rusage32 {
struct timeval32 ru_utime;

9
sys/compat/linux/linux_ioctl.c
View File

@ -34,6 +34,9 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#ifdef COMPAT_LINUX32
#include <sys/abi_compat.h>
#endif
#include <sys/capsicum.h>
#include <sys/cdio.h>
#include <sys/dvdio.h>
@ -2543,12 +2546,6 @@ linux_ioctl_drm(struct thread *td, struct linux_ioctl_args *args)
}
#ifdef COMPAT_LINUX32
#define CP(src,dst,fld) do { (dst).fld = (src).fld; } 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)
static int
linux_ioctl_sg_io(struct thread *td, struct linux_ioctl_args *args)
{

12
sys/compat/linux/linux_timer.h
View File

@ -33,6 +33,8 @@
#ifndef _LINUX_TIMER_H
#define _LINUX_TIMER_H
#include <sys/abi_compat.h>
#ifndef __LINUX_ARCH_SIGEV_PREAMBLE_SIZE
#define __LINUX_ARCH_SIGEV_PREAMBLE_SIZE \
(sizeof(l_int) * 2 + sizeof(l_sigval_t))
@ -79,16 +81,6 @@
#define L_SIGEV_THREAD 2
#define L_SIGEV_THREAD_ID 4
#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)
struct l_sigevent {
l_sigval_t sigev_value;
l_int sigev_signo;

9
sys/dev/ipmi/ipmi.c
View File

@ -55,6 +55,10 @@ __FBSDID("$FreeBSD$");
#include <dev/ipmi/ipmivars.h>
#endif
#ifdef IPMICTL_SEND_COMMAND_32
#include <sys/abi_compat.h>
#endif
/*
* Driver request structures are allocated on the stack via alloca() to
* avoid calling malloc(), especially for the watchdog handler.
@ -315,11 +319,6 @@ ipmi_handle_attn(struct ipmi_softc *sc)
}
#endif
#ifdef IPMICTL_SEND_COMMAND_32
#define PTRIN(p) ((void *)(uintptr_t)(p))
#define PTROUT(p) ((uintptr_t)(p))
#endif
static int
ipmi_ioctl(struct cdev *cdev, u_long cmd, caddr_t data,
int flags, struct thread *td)

11
sys/dev/mpr/mpr_user.c
View File

@ -74,6 +74,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/abi_compat.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <sys/sysctl.h>
@ -178,16 +179,6 @@ static int mpr_user_btdh(struct mpr_softc *sc, mpr_btdh_mapping_t *data);
static MALLOC_DEFINE(M_MPRUSER, "mpr_user", "Buffers for mpr(4) ioctls");
/* Macros from compat/freebsd32/freebsd32.h */
#define PTRIN(v) (void *)(uintptr_t)(v)
#define PTROUT(v) (uint32_t)(uintptr_t)(v)
#define CP(src,dst,fld) do { (dst).fld = (src).fld; } 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)
/*
* MPI functions that support IEEE SGLs for SAS3.
*/

11
sys/dev/mps/mps_user.c
View File

@ -75,6 +75,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/abi_compat.h>
#include <sys/malloc.h>
#include <sys/uio.h>
#include <sys/sysctl.h>
@ -180,16 +181,6 @@ static int mps_user_btdh(struct mps_softc *sc, mps_btdh_mapping_t *data);
MALLOC_DEFINE(M_MPSUSER, "mps_user", "Buffers for mps(4) ioctls");
/* Macros from compat/freebsd32/freebsd32.h */
#define PTRIN(v) (void *)(uintptr_t)(v)
#define PTROUT(v) (uint32_t)(uintptr_t)(v)
#define CP(src,dst,fld) do { (dst).fld = (src).fld; } 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)
int
mps_attach_user(struct mps_softc *sc)
{

8
sys/dev/mpt/mpt_user.c
View File

@ -36,6 +36,9 @@
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#ifdef __amd64__
#include <sys/abi_compat.h>
#endif
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/ioccom.h>
@ -588,11 +591,6 @@ mpt_user_raid_action(struct mpt_softc *mpt, struct mpt_raid_action *raid_act,
return (0);
}
#ifdef __amd64__
#define PTRIN(p) ((void *)(uintptr_t)(p))
#define PTROUT(v) ((u_int32_t)(uintptr_t)(v))
#endif
static int
mpt_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
{

9
sys/i386/linux/linux.h
View File

@ -30,6 +30,7 @@
#ifndef _I386_LINUX_H_
#define _I386_LINUX_H_
#include <sys/abi_compat.h>
#include <sys/signal.h> /* for sigval union */
#include <compat/linux/linux.h>
@ -42,14 +43,6 @@
#define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
#define LINUX_USRSTACK LINUX_SHAREDPAGE
#define PTRIN(v) (void *)(v)
#define PTROUT(v) (l_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)
/*
* Provide a separate set of types for the Linux types.
*/

5
sys/kern/sysv_sem.c
View File

@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/abi_compat.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/proc.h>
@ -1752,10 +1753,6 @@ sys_semsys(td, uap)
return (error);
}
#ifndef CP
#define CP(src, dst, fld) do { (dst).fld = (src).fld; } while (0)
#endif
#ifndef _SYS_SYSPROTO_H_
struct freebsd7___semctl_args {
int semid;

5
sys/kern/sysv_shm.c
View File

@ -75,6 +75,7 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/abi_compat.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/lock.h>
@ -1593,10 +1594,6 @@ done:
#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7)
#ifndef CP
#define CP(src, dst, fld) do { (dst).fld = (src).fld; } while (0)
#endif
#ifndef _SYS_SYSPROTO_H_
struct freebsd7_shmctl_args {
int shmid;

77
sys/sys/abi_compat.h Normal file
View File

@ -0,0 +1,77 @@
/*-
* 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_ */