You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
161 lines
4.5 KiB
161 lines
4.5 KiB
/*
|
|
* Copyright 2010 Tilera Corporation. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
/* Adjust unistd.h to provide 32-bit numbers and functions. */
|
|
#define __SYSCALL_COMPAT
|
|
|
|
#include <linux/compat.h>
|
|
#include <linux/msg.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/fcntl.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/signal.h>
|
|
#include <asm/syscalls.h>
|
|
|
|
/*
|
|
* Syscalls that take 64-bit numbers traditionally take them in 32-bit
|
|
* "high" and "low" value parts on 32-bit architectures.
|
|
* In principle, one could imagine passing some register arguments as
|
|
* fully 64-bit on TILE-Gx in 32-bit mode, but it seems easier to
|
|
* adapt the usual convention.
|
|
*/
|
|
|
|
long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high)
|
|
{
|
|
return sys_truncate(filename, ((loff_t)high << 32) | low);
|
|
}
|
|
|
|
long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high)
|
|
{
|
|
return sys_ftruncate(fd, ((loff_t)high << 32) | low);
|
|
}
|
|
|
|
long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count,
|
|
u32 dummy, u32 low, u32 high)
|
|
{
|
|
return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low);
|
|
}
|
|
|
|
long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count,
|
|
u32 dummy, u32 low, u32 high)
|
|
{
|
|
return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low);
|
|
}
|
|
|
|
long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len)
|
|
{
|
|
return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len);
|
|
}
|
|
|
|
long compat_sys_sync_file_range2(int fd, unsigned int flags,
|
|
u32 offset_lo, u32 offset_hi,
|
|
u32 nbytes_lo, u32 nbytes_hi)
|
|
{
|
|
return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo,
|
|
((loff_t)nbytes_hi << 32) | nbytes_lo,
|
|
flags);
|
|
}
|
|
|
|
long compat_sys_fallocate(int fd, int mode,
|
|
u32 offset_lo, u32 offset_hi,
|
|
u32 len_lo, u32 len_hi)
|
|
{
|
|
return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo,
|
|
((loff_t)len_hi << 32) | len_lo);
|
|
}
|
|
|
|
|
|
|
|
long compat_sys_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 __force __user *)&t);
|
|
set_fs(old_fs);
|
|
if (put_compat_timespec(&t, interval))
|
|
return -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The usual compat_sys_msgsnd() and _msgrcv() seem to be assuming
|
|
* some different calling convention than our normal 32-bit tile code.
|
|
*/
|
|
|
|
/* Already defined in ipc/compat.c, but we need it here. */
|
|
struct compat_msgbuf {
|
|
compat_long_t mtype;
|
|
char mtext[1];
|
|
};
|
|
|
|
long tile_compat_sys_msgsnd(int msqid,
|
|
struct compat_msgbuf __user *msgp,
|
|
size_t msgsz, int msgflg)
|
|
{
|
|
compat_long_t mtype;
|
|
|
|
if (get_user(mtype, &msgp->mtype))
|
|
return -EFAULT;
|
|
return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg);
|
|
}
|
|
|
|
long tile_compat_sys_msgrcv(int msqid,
|
|
struct compat_msgbuf __user *msgp,
|
|
size_t msgsz, long msgtyp, int msgflg)
|
|
{
|
|
long err, mtype;
|
|
|
|
err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
if (put_user(mtype, &msgp->mtype))
|
|
err = -EFAULT;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/* Provide the compat syscall number to call mapping. */
|
|
#undef __SYSCALL
|
|
#define __SYSCALL(nr, call) [nr] = (call),
|
|
|
|
/* The generic versions of these don't work for Tile. */
|
|
#define compat_sys_msgrcv tile_compat_sys_msgrcv
|
|
#define compat_sys_msgsnd tile_compat_sys_msgsnd
|
|
|
|
/* See comments in sys.c */
|
|
#define compat_sys_fadvise64_64 sys32_fadvise64_64
|
|
#define compat_sys_readahead sys32_readahead
|
|
|
|
/* Call the trampolines to manage pt_regs where necessary. */
|
|
#define compat_sys_execve _compat_sys_execve
|
|
#define compat_sys_sigaltstack _compat_sys_sigaltstack
|
|
#define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn
|
|
#define sys_clone _sys_clone
|
|
|
|
/*
|
|
* Note that we can't include <linux/unistd.h> here since the header
|
|
* guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
|
|
*/
|
|
void *compat_sys_call_table[__NR_syscalls] = {
|
|
[0 ... __NR_syscalls-1] = sys_ni_syscall,
|
|
#include <asm/unistd.h>
|
|
};
|
|
|