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// 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>
};
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