diff options
Diffstat (limited to 'arch/tile/kernel/sys.c')
| -rw-r--r-- | arch/tile/kernel/sys.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/arch/tile/kernel/sys.c b/arch/tile/kernel/sys.c deleted file mode 100644 index c7418dcbbb08..000000000000 --- a/arch/tile/kernel/sys.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * 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. - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/TILE - * platform. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/file.h> -#include <linux/mempolicy.h> -#include <linux/binfmts.h> -#include <linux/fs.h> -#include <linux/compat.h> -#include <linux/uaccess.h> -#include <linux/signal.h> -#include <asm/syscalls.h> -#include <asm/pgtable.h> -#include <asm/homecache.h> -#include <asm/cachectl.h> -#include <asm/byteorder.h> -#include <arch/chip.h> - -SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, len, - unsigned long, flags) -{ - /* DCACHE is not particularly effective if not bound to one cpu. */ - if (flags & DCACHE) - homecache_evict(cpumask_of(raw_smp_processor_id())); - - if (flags & ICACHE) - flush_remote(0, HV_FLUSH_EVICT_L1I, mm_cpumask(current->mm), - 0, 0, 0, NULL, NULL, 0); - return 0; -} - -/* - * Syscalls that pass 64-bit values on 32-bit systems normally - * pass them as (low,high) word packed into the immediately adjacent - * registers. If the low word naturally falls on an even register, - * our ABI makes it work correctly; if not, we adjust it here. - * Handling it here means we don't have to fix uclibc AND glibc AND - * any other standard libcs we want to support. - */ - -#if !defined(__tilegx__) || defined(CONFIG_COMPAT) - -#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 - -ssize_t sys32_readahead(int fd, SYSCALL_PAIR(offset), u32 count) -{ - return sys_readahead(fd, ((loff_t)offset_hi << 32) | offset_lo, count); -} - -int sys32_fadvise64_64(int fd, SYSCALL_PAIR(offset), - SYSCALL_PAIR(len), int advice) -{ - return sys_fadvise64_64(fd, ((loff_t)offset_hi << 32) | offset_lo, - ((loff_t)len_hi << 32) | len_lo, advice); -} - -#endif /* 32-bit syscall wrappers */ - -/* Note: used by the compat code even in 64-bit Linux. */ -SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len, - unsigned long, prot, unsigned long, flags, - unsigned long, fd, unsigned long, off_4k) -{ -#define PAGE_ADJUST (PAGE_SHIFT - 12) - if (off_4k & ((1 << PAGE_ADJUST) - 1)) - return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, - off_4k >> PAGE_ADJUST); -} - -#ifdef __tilegx__ -SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, - unsigned long, prot, unsigned long, flags, - unsigned long, fd, off_t, offset) -{ - if (offset & ((1 << PAGE_SHIFT) - 1)) - return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, - offset >> PAGE_SHIFT); -} -#endif - - -/* Provide the actual syscall number to call mapping. */ -#undef __SYSCALL -#define __SYSCALL(nr, call) [nr] = (call), - -#ifndef __tilegx__ -/* See comments at the top of the file. */ -#define sys_fadvise64_64 sys32_fadvise64_64 -#define sys_readahead sys32_readahead -#endif - -/* Call the assembly trampolines where necessary. */ -#undef sys_rt_sigreturn -#define sys_rt_sigreturn _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 *sys_call_table[__NR_syscalls] = { - [0 ... __NR_syscalls-1] = sys_ni_syscall, -#include <asm/unistd.h> -}; |