[net-next-2.6.git] / arch / mips / kernel / linux32.c

/*
 * Conversion between 32-bit and 64-bit native system calls.
 *
 * Copyright (C) 2000 Silicon Graphics, Inc.
 * Written by Ulf Carlsson (ulfc@engr.sgi.com)
 * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com)
 */
#include <linux/compiler.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/file.h>
#include <linux/highuid.h>
#include <linux/resource.h>
#include <linux/highmem.h>
#include <linux/time.h>
#include <linux/times.h>
#include <linux/poll.h>
#include <linux/skbuff.h>
#include <linux/filter.h>
#include <linux/shm.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/icmpv6.h>
#include <linux/syscalls.h>
#include <linux/sysctl.h>
#include <linux/utime.h>
#include <linux/utsname.h>
#include <linux/personality.h>
#include <linux/dnotify.h>
#include <linux/module.h>
#include <linux/binfmts.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ipc.h>
#include <linux/slab.h>

#include <net/sock.h>
#include <net/scm.h>

#include <asm/compat-signal.h>
#include <asm/sim.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/mman.h>

/* Use this to get at 32-bit user passed pointers. */
/* A() macro should be used for places where you e.g.
   have some internal variable u32 and just want to get
   rid of a compiler warning. AA() has to be used in
   places where you want to convert a function argument
   to 32bit pointer or when you e.g. access pt_regs
   structure and want to consider 32bit registers only.
 */
#define A(__x) ((unsigned long)(__x))
#define AA(__x) ((unsigned long)((int)__x))

#ifdef __MIPSEB__
#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
#endif
#ifdef __MIPSEL__
#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
#endif

SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
	unsigned long, prot, unsigned long, flags, unsigned long, fd,
	unsigned long, pgoff)
{
	unsigned long error;

	error = -EINVAL;
	if (pgoff & (~PAGE_MASK >> 12))
		goto out;
	error = sys_mmap_pgoff(addr, len, prot, flags, fd,
			       pgoff >> (PAGE_SHIFT-12));
out:
	return error;
}

/*
 * sys_execve() executes a new program.
 */
asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
{
	int error;
	char * filename;

	filename = getname(compat_ptr(regs.regs[4]));
	error = PTR_ERR(filename);
	if (IS_ERR(filename))
		goto out;
	error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
				 compat_ptr(regs.regs[6]), &regs);
	putname(filename);

out:
	return error;
}

#define RLIM_INFINITY32	0x7fffffff
#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)

struct rlimit32 {
	int	rlim_cur;
	int	rlim_max;
};

SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
	unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
{
	return sys_truncate(path, merge_64(a2, a3));
}

SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
	unsigned long, a2, unsigned long, a3)
{
	return sys_ftruncate(fd, merge_64(a2, a3));
}

SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
		unsigned int, offset_low, loff_t __user *, result,
		unsigned int, origin)
{
	return sys_llseek(fd, offset_high, offset_low, result, origin);
}

/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
   lseek back to original location.  They fail just like lseek does on
   non-seekable files.  */

SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
	unsigned long, unused, unsigned long, a4, unsigned long, a5)
{
	return sys_pread64(fd, buf, count, merge_64(a4, a5));
}

SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
	size_t, count, u32, unused, u64, a4, u64, a5)
{
	return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
}

SYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid,
	struct compat_timespec __user *, interval)
{
	struct timespec t;
	int ret;
	mm_segment_t old_fs = get_fs();

	set_fs(KERNEL_DS);
	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
	set_fs(old_fs);
	if (put_user (t.tv_sec, &interval->tv_sec) ||
	    __put_user(t.tv_nsec, &interval->tv_nsec))
		return -EFAULT;
	return ret;
}

#ifdef CONFIG_SYSVIPC

SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third,
	unsigned long, ptr, unsigned long, fifth)
{
	int version, err;

	version = call >> 16; /* hack for backward compatibility */
	call &= 0xffff;

	switch (call) {
	case SEMOP:
		/* struct sembuf is the same on 32 and 64bit :)) */
		err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
		break;
	case SEMTIMEDOP:
		err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
					    compat_ptr(fifth));
		break;
	case SEMGET:
		err = sys_semget(first, second, third);
		break;
	case SEMCTL:
		err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
		break;
	case MSGSND:
		err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
		break;
	case MSGRCV:
		err = compat_sys_msgrcv(first, second, fifth, third,
					version, compat_ptr(ptr));
		break;
	case MSGGET:
		err = sys_msgget((key_t) first, second);
		break;
	case MSGCTL:
		err = compat_sys_msgctl(first, second, compat_ptr(ptr));
		break;
	case SHMAT:
		err = compat_sys_shmat(first, second, third, version,
				       compat_ptr(ptr));
		break;
	case SHMDT:
		err = sys_shmdt(compat_ptr(ptr));
		break;
	case SHMGET:
		err = sys_shmget(first, (unsigned)second, third);
		break;
	case SHMCTL:
		err = compat_sys_shmctl(first, second, compat_ptr(ptr));
		break;
	default:
		err = -EINVAL;
		break;
	}

	return err;
}

#else

SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third,
	u32, ptr, u32, fifth)
{
	return -ENOSYS;
}

#endif /* CONFIG_SYSVIPC */

#ifdef CONFIG_MIPS32_N32
SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg)
{
	/* compat_sys_semctl expects a pointer to union semun */
	u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
	if (put_user(arg, uptr))
		return -EFAULT;
	return compat_sys_semctl(semid, semnum, cmd, uptr);
}

SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz,
	int, msgflg)
{
	return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
}

SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
	int, msgtyp, int, msgflg)
{
	return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
				 compat_ptr(msgp));
}
#endif

SYSCALL_DEFINE1(32_personality, unsigned long, personality)
{
	int ret;
	personality &= 0xffffffff;
	if (personality(current->personality) == PER_LINUX32 &&
	    personality == PER_LINUX)
		personality = PER_LINUX32;
	ret = sys_personality(personality);
	if (ret == PER_LINUX32)
		ret = PER_LINUX;
	return ret;
}

SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
	compat_off_t __user *, offset, s32, count)
{
	mm_segment_t old_fs = get_fs();
	int ret;
	off_t of;

	if (offset && get_user(of, offset))
		return -EFAULT;

	set_fs(KERNEL_DS);
	ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
	set_fs(old_fs);

	if (offset && put_user(of, offset))
		return -EFAULT;

	return ret;
}

asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
                                   size_t count)
{
	return sys_readahead(fd, merge_64(a2, a3), count);
}

asmlinkage long sys32_sync_file_range(int fd, int __pad,
	unsigned long a2, unsigned long a3,
	unsigned long a4, unsigned long a5,
	int flags)
{
	return sys_sync_file_range(fd,
			merge_64(a2, a3), merge_64(a4, a5),
			flags);
}

asmlinkage long sys32_fadvise64_64(int fd, int __pad,
	unsigned long a2, unsigned long a3,
	unsigned long a4, unsigned long a5,
	int flags)
{
	return sys_fadvise64_64(fd,
			merge_64(a2, a3), merge_64(a4, a5),
			flags);
}

asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
	unsigned offset_a3, unsigned len_a4, unsigned len_a5)
{
	return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
	                     merge_64(len_a4, len_a5));
}

save_static_function(sys32_clone);
static int noinline __used
_sys32_clone(nabi_no_regargs struct pt_regs regs)
{
	unsigned long clone_flags;
	unsigned long newsp;
	int __user *parent_tidptr, *child_tidptr;

	clone_flags = regs.regs[4];
	newsp = regs.regs[5];
	if (!newsp)
		newsp = regs.regs[29];
	parent_tidptr = (int __user *) regs.regs[6];

	/* Use __dummy4 instead of getting it off the stack, so that
	   syscall() works.  */
	child_tidptr = (int __user *) __dummy4;
	return do_fork(clone_flags, newsp, &regs, 0,
	               parent_tidptr, child_tidptr);
}

asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
	size_t len)
{
	return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Conversion between 32-bit and 64-bit native system calls.
	3	*
	4	* Copyright (C) 2000 Silicon Graphics, Inc.
	5	* Written by Ulf Carlsson (ulfc@engr.sgi.com)
	6	* sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com)
	7	*/
1da177e4 LT	8	#include <linux/compiler.h>
	9	#include <linux/mm.h>
	10	#include <linux/errno.h>
	11	#include <linux/file.h>
1da177e4	12	#include <linux/highuid.h>
1da177e4 LT	13	#include <linux/resource.h>
	14	#include <linux/highmem.h>
	15	#include <linux/time.h>
	16	#include <linux/times.h>
	17	#include <linux/poll.h>
1da177e4 LT	18	#include <linux/skbuff.h>
	19	#include <linux/filter.h>
	20	#include <linux/shm.h>
	21	#include <linux/sem.h>
	22	#include <linux/msg.h>
	23	#include <linux/icmpv6.h>
	24	#include <linux/syscalls.h>
	25	#include <linux/sysctl.h>
	26	#include <linux/utime.h>
	27	#include <linux/utsname.h>
	28	#include <linux/personality.h>
1da177e4 LT	29	#include <linux/dnotify.h>
	30	#include <linux/module.h>
	31	#include <linux/binfmts.h>
	32	#include <linux/security.h>
	33	#include <linux/compat.h>
	34	#include <linux/vfs.h>
cba4fbbf	35	#include <linux/ipc.h>
5a0e3ad6	36	#include <linux/slab.h>
1da177e4 LT	37
	38	#include <net/sock.h>
	39	#include <net/scm.h>
	40
431dc804	41	#include <asm/compat-signal.h>
1da177e4 LT	42	#include <asm/sim.h>
	43	#include <asm/uaccess.h>
	44	#include <asm/mmu_context.h>
	45	#include <asm/mman.h>
	46
	47	/* Use this to get at 32-bit user passed pointers. */
	48	/* A() macro should be used for places where you e.g.
	49	have some internal variable u32 and just want to get
	50	rid of a compiler warning. AA() has to be used in
	51	places where you want to convert a function argument
	52	to 32bit pointer or when you e.g. access pt_regs
	53	structure and want to consider 32bit registers only.
	54	*/
	55	#define A(__x) ((unsigned long)(__x))
	56	#define AA(__x) ((unsigned long)((int)__x))
	57
	58	#ifdef __MIPSEB__
21a151d8	59	#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
1da177e4 LT	60	#endif
1da177e4 LT	61	#ifdef __MIPSEL__
21a151d8	62	#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
1da177e4 LT	63	#endif
1da177e4 LT	64
dbda6ac0 RB	65	SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
	66	unsigned long, prot, unsigned long, flags, unsigned long, fd,
	67	unsigned long, pgoff)
1da177e4	68	{
1da177e4 LT	69	unsigned long error;
	70
	71	error = -EINVAL;
947df17c PA	72	if (pgoff & (~PAGE_MASK >> 12))
947df17c PA	73	goto out;
f8b72560 AV	74	error = sys_mmap_pgoff(addr, len, prot, flags, fd,
f8b72560 AV	75	pgoff >> (PAGE_SHIFT-12));
1da177e4 LT	76	out:
	77	return error;
	78	}
	79
1da177e4 LT	80	/*
	81	* sys_execve() executes a new program.
	82	*/
	83	asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
	84	{
	85	int error;
	86	char * filename;
	87
	88	filename = getname(compat_ptr(regs.regs[4]));
	89	error = PTR_ERR(filename);
	90	if (IS_ERR(filename))
	91	goto out;
	92	error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
	93	compat_ptr(regs.regs[6]), &regs);
	94	putname(filename);
	95
	96	out:
	97	return error;
	98	}
	99
1da177e4 LT	100	#define RLIM_INFINITY32 0x7fffffff
	101	#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
	102
	103	struct rlimit32 {
	104	int rlim_cur;
	105	int rlim_max;
	106	};
	107
dbda6ac0 RB	108	SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
dbda6ac0 RB	109	unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
1da177e4	110	{
d4e9cffa	111	return sys_truncate(path, merge_64(a2, a3));
1da177e4 LT	112	}
1da177e4 LT	113
dbda6ac0 RB	114	SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
dbda6ac0 RB	115	unsigned long, a2, unsigned long, a3)
1da177e4	116	{
d4e9cffa	117	return sys_ftruncate(fd, merge_64(a2, a3));
1da177e4 LT	118	}
1da177e4 LT	119
d6c178e9 RB	120	SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
	121	unsigned int, offset_low, loff_t __user *, result,
	122	unsigned int, origin)
1da177e4 LT	123	{
	124	return sys_llseek(fd, offset_high, offset_low, result, origin);
	125	}
	126
	127	/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
	128	lseek back to original location. They fail just like lseek does on
	129	non-seekable files. */
	130
dbda6ac0 RB	131	SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
dbda6ac0 RB	132	unsigned long, unused, unsigned long, a4, unsigned long, a5)
1da177e4	133	{
6ad0013b	134	return sys_pread64(fd, buf, count, merge_64(a4, a5));
1da177e4 LT	135	}
1da177e4 LT	136
dbda6ac0 RB	137	SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
dbda6ac0 RB	138	size_t, count, u32, unused, u64, a4, u64, a5)
1da177e4	139	{
6ad0013b	140	return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
1da177e4 LT	141	}
1da177e4 LT	142
dbda6ac0 RB	143	SYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid,
dbda6ac0 RB	144	struct compat_timespec __user *, interval)
1da177e4 LT	145	{
	146	struct timespec t;
	147	int ret;
49a89efb	148	mm_segment_t old_fs = get_fs();
1da177e4	149
49a89efb	150	set_fs(KERNEL_DS);
219ac73a	151	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
49a89efb	152	set_fs(old_fs);
1da177e4	153	if (put_user (t.tv_sec, &interval->tv_sec) \|\|
49a89efb	154	__put_user(t.tv_nsec, &interval->tv_nsec))
1da177e4 LT	155	return -EFAULT;
	156	return ret;
	157	}
	158
65f8ebe0 RB	159	#ifdef CONFIG_SYSVIPC
65f8ebe0 RB	160
dbda6ac0 RB	161	SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third,
dbda6ac0 RB	162	unsigned long, ptr, unsigned long, fifth)
1da177e4 LT	163	{
	164	int version, err;
	165
	166	version = call >> 16; /* hack for backward compatibility */
	167	call &= 0xffff;
	168
	169	switch (call) {
	170	case SEMOP:
	171	/* struct sembuf is the same on 32 and 64bit :)) */
05e43966	172	err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
1da177e4 LT	173	break;
1da177e4 LT	174	case SEMTIMEDOP:
05e43966 AN	175	err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
05e43966 AN	176	compat_ptr(fifth));
1da177e4 LT	177	break;
1da177e4 LT	178	case SEMGET:
05e43966	179	err = sys_semget(first, second, third);
1da177e4 LT	180	break;
1da177e4 LT	181	case SEMCTL:
05e43966	182	err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
1da177e4	183	break;
1da177e4	184	case MSGSND:
05e43966	185	err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
1da177e4 LT	186	break;
1da177e4 LT	187	case MSGRCV:
05e43966 AN	188	err = compat_sys_msgrcv(first, second, fifth, third,
05e43966 AN	189	version, compat_ptr(ptr));
1da177e4 LT	190	break;
1da177e4 LT	191	case MSGGET:
05e43966	192	err = sys_msgget((key_t) first, second);
1da177e4 LT	193	break;
1da177e4 LT	194	case MSGCTL:
05e43966	195	err = compat_sys_msgctl(first, second, compat_ptr(ptr));
1da177e4	196	break;
1da177e4	197	case SHMAT:
05e43966 AN	198	err = compat_sys_shmat(first, second, third, version,
05e43966 AN	199	compat_ptr(ptr));
1da177e4 LT	200	break;
1da177e4 LT	201	case SHMDT:
05e43966	202	err = sys_shmdt(compat_ptr(ptr));
1da177e4 LT	203	break;
1da177e4 LT	204	case SHMGET:
05e43966	205	err = sys_shmget(first, (unsigned)second, third);
1da177e4 LT	206	break;
1da177e4 LT	207	case SHMCTL:
05e43966	208	err = compat_sys_shmctl(first, second, compat_ptr(ptr));
1da177e4 LT	209	break;
	210	default:
	211	err = -EINVAL;
	212	break;
	213	}
	214
	215	return err;
	216	}
	217
65f8ebe0 RB	218	#else
65f8ebe0 RB	219
dbda6ac0	220	SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third,
c189846e	221	u32, ptr, u32, fifth)
65f8ebe0 RB	222	{
	223	return -ENOSYS;
	224	}
	225
	226	#endif /* CONFIG_SYSVIPC */
	227
05e43966	228	#ifdef CONFIG_MIPS32_N32
dbda6ac0	229	SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg)
1da177e4	230	{
05e43966 AN	231	/* compat_sys_semctl expects a pointer to union semun */
05e43966 AN	232	u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
e16d8df0	233	if (put_user(arg, uptr))
05e43966 AN	234	return -EFAULT;
05e43966 AN	235	return compat_sys_semctl(semid, semnum, cmd, uptr);
1da177e4	236	}
e16d8df0	237
dbda6ac0 RB	238	SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz,
dbda6ac0 RB	239	int, msgflg)
e16d8df0 AN	240	{
	241	return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
	242	}
	243
dbda6ac0 RB	244	SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
dbda6ac0 RB	245	int, msgtyp, int, msgflg)
e16d8df0 AN	246	{
	247	return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
	248	compat_ptr(msgp));
	249	}
05e43966	250	#endif
1da177e4	251
dbda6ac0	252	SYSCALL_DEFINE1(32_personality, unsigned long, personality)
1da177e4 LT	253	{
1da177e4 LT	254	int ret;
53571ce4 TS	255	personality &= 0xffffffff;
	256	if (personality(current->personality) == PER_LINUX32 &&
	257	personality == PER_LINUX)
1da177e4 LT	258	personality = PER_LINUX32;
	259	ret = sys_personality(personality);
	260	if (ret == PER_LINUX32)
	261	ret = PER_LINUX;
	262	return ret;
	263	}
	264
dbda6ac0 RB	265	SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
dbda6ac0 RB	266	compat_off_t __user *, offset, s32, count)
1da177e4 LT	267	{
	268	mm_segment_t old_fs = get_fs();
	269	int ret;
	270	off_t of;
42a3b4f2	271
1da177e4 LT	272	if (offset && get_user(of, offset))
1da177e4 LT	273	return -EFAULT;
42a3b4f2	274
1da177e4	275	set_fs(KERNEL_DS);
219ac73a	276	ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
1da177e4	277	set_fs(old_fs);
42a3b4f2	278
1da177e4 LT	279	if (offset && put_user(of, offset))
1da177e4 LT	280	return -EFAULT;
42a3b4f2	281
1da177e4 LT	282	return ret;
	283	}
	284
	285	asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
	286	size_t count)
	287	{
	288	return sys_readahead(fd, merge_64(a2, a3), count);
	289	}
	290
a8d587a7 RB	291	asmlinkage long sys32_sync_file_range(int fd, int __pad,
	292	unsigned long a2, unsigned long a3,
	293	unsigned long a4, unsigned long a5,
	294	int flags)
	295	{
	296	return sys_sync_file_range(fd,
	297	merge_64(a2, a3), merge_64(a4, a5),
	298	flags);
	299	}
	300
8676d2e0 AN	301	asmlinkage long sys32_fadvise64_64(int fd, int __pad,
	302	unsigned long a2, unsigned long a3,
	303	unsigned long a4, unsigned long a5,
	304	int flags)
	305	{
	306	return sys_fadvise64_64(fd,
	307	merge_64(a2, a3), merge_64(a4, a5),
	308	flags);
	309	}
	310
4dc46775 RB	311	asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
	312	unsigned offset_a3, unsigned len_a4, unsigned len_a5)
	313	{
	314	return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
	315	merge_64(len_a4, len_a5));
	316	}
	317
3c37026d	318	save_static_function(sys32_clone);
f5dbeaf5	319	static int noinline __used
3c37026d RB	320	_sys32_clone(nabi_no_regargs struct pt_regs regs)
	321	{
	322	unsigned long clone_flags;
	323	unsigned long newsp;
	324	int __user parent_tidptr, child_tidptr;
	325
	326	clone_flags = regs.regs[4];
	327	newsp = regs.regs[5];
	328	if (!newsp)
	329	newsp = regs.regs[29];
219ac73a	330	parent_tidptr = (int __user *) regs.regs[6];
3c37026d RB	331
	332	/* Use __dummy4 instead of getting it off the stack, so that
	333	syscall() works. */
	334	child_tidptr = (int __user *) __dummy4;
	335	return do_fork(clone_flags, newsp, &regs, 0,
	336	parent_tidptr, child_tidptr);
	337	}
80b8585b WZ	338
	339	asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
	340	size_t len)
	341	{
	342	return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
	343	}