/* * 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>};