/* * 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/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>#include <asm/byteorder.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 * adopt the usual convention. */ #ifdef __BIG_ENDIAN#define SYSCALL_PAIR(name) u32, name ## _hi, u32, name ## _lo#else#define SYSCALL_PAIR(name) u32, name ## _lo, u32, name ## _hi#endif COMPAT_SYSCALL_DEFINE4(truncate64, char __user *, filename, u32, dummy,		       SYSCALL_PAIR(length)){	return sys_truncate(filename, ((loff_t)length_hi << 32) | length_lo);} COMPAT_SYSCALL_DEFINE4(ftruncate64, unsigned int, fd, u32, dummy,		       SYSCALL_PAIR(length)){	return sys_ftruncate(fd, ((loff_t)length_hi << 32) | length_lo);} COMPAT_SYSCALL_DEFINE6(pread64, unsigned int, fd, char __user *, ubuf,		       size_t, count, u32, dummy, SYSCALL_PAIR(offset)){	return sys_pread64(fd, ubuf, count,			   ((loff_t)offset_hi << 32) | offset_lo);} COMPAT_SYSCALL_DEFINE6(pwrite64, unsigned int, fd, char __user *, ubuf,		       size_t, count, u32, dummy, SYSCALL_PAIR(offset)){	return sys_pwrite64(fd, ubuf, count,			    ((loff_t)offset_hi << 32) | offset_lo);} COMPAT_SYSCALL_DEFINE6(sync_file_range2, int, fd, unsigned int, flags,		       SYSCALL_PAIR(offset), SYSCALL_PAIR(nbytes)){	return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo,				   ((loff_t)nbytes_hi << 32) | nbytes_lo,				   flags);} COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode,		       SYSCALL_PAIR(offset), SYSCALL_PAIR(len)){	return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo,			     ((loff_t)len_hi << 32) | len_lo);} /* * Avoid bug in generic sys_llseek() that specifies offset_high and * offset_low as "unsigned long", thus making it possible to pass * a sign-extended high 32 bits in offset_low. * Note that we do not use SYSCALL_PAIR here since glibc passes the * high and low parts explicitly in that order. */COMPAT_SYSCALL_DEFINE5(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);} /* Provide the compat syscall number to call mapping. */#undef __SYSCALL#define __SYSCALL(nr, call) [nr] = (call), /* See comments in sys.c */#define compat_sys_fadvise64_64 sys32_fadvise64_64#define compat_sys_readahead sys32_readahead#define sys_llseek compat_sys_llseek /* Call the assembly trampolines where necessary. */#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>};