72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Port on Texas Instruments TMS320C6x architecture
|
|
*
|
|
* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
|
|
* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include <asm/syscalls.h>
|
|
|
|
#ifdef CONFIG_ACCESS_CHECK
|
|
int _access_ok(unsigned long addr, unsigned long size)
|
|
{
|
|
if (!size)
|
|
return 1;
|
|
|
|
if (!addr || addr > (0xffffffffUL - (size - 1)))
|
|
goto _bad_access;
|
|
|
|
if (uaccess_kernel())
|
|
return 1;
|
|
|
|
if (memory_start <= addr && (addr + size - 1) < memory_end)
|
|
return 1;
|
|
|
|
_bad_access:
|
|
pr_debug("Bad access attempt: pid[%d] addr[%08lx] size[0x%lx]\n",
|
|
current->pid, addr, size);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(_access_ok);
|
|
#endif
|
|
|
|
/* sys_cache_sync -- sync caches over given range */
|
|
asmlinkage int sys_cache_sync(unsigned long s, unsigned long e)
|
|
{
|
|
L1D_cache_block_writeback_invalidate(s, e);
|
|
L1P_cache_block_invalidate(s, e);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Provide the actual syscall number to call mapping. */
|
|
#undef __SYSCALL
|
|
#define __SYSCALL(nr, call) [nr] = (call),
|
|
|
|
/*
|
|
* Use trampolines
|
|
*/
|
|
#define sys_pread64 sys_pread_c6x
|
|
#define sys_pwrite64 sys_pwrite_c6x
|
|
#define sys_truncate64 sys_truncate64_c6x
|
|
#define sys_ftruncate64 sys_ftruncate64_c6x
|
|
#define sys_fadvise64 sys_fadvise64_c6x
|
|
#define sys_fadvise64_64 sys_fadvise64_64_c6x
|
|
#define sys_fallocate sys_fallocate_c6x
|
|
|
|
/* Use sys_mmap_pgoff directly */
|
|
#define sys_mmap2 sys_mmap_pgoff
|
|
|
|
/*
|
|
* 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>
|
|
};
|