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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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/*
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* Port on Texas Instruments TMS320C6x architecture
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*
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* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
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* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/syscalls.h>
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#include <linux/uaccess.h>
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#include <asm/syscalls.h>
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#ifdef CONFIG_ACCESS_CHECK
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int _access_ok(unsigned long addr, unsigned long size)
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{
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if (!size)
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return 1;
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if (!addr || addr > (0xffffffffUL - (size - 1)))
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goto _bad_access;
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if (segment_eq(get_fs(), KERNEL_DS))
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return 1;
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if (memory_start <= addr && (addr + size - 1) < memory_end)
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return 1;
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_bad_access:
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pr_debug("Bad access attempt: pid[%d] addr[%08lx] size[0x%lx]\n",
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current->pid, addr, size);
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return 0;
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}
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EXPORT_SYMBOL(_access_ok);
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#endif
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/* sys_cache_sync -- sync caches over given range */
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asmlinkage int sys_cache_sync(unsigned long s, unsigned long e)
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{
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L1D_cache_block_writeback_invalidate(s, e);
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L1P_cache_block_invalidate(s, e);
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return 0;
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}
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/* Provide the actual syscall number to call mapping. */
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#undef __SYSCALL
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#define __SYSCALL(nr, call) [nr] = (call),
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/*
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* Use trampolines
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*/
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#define sys_pread64 sys_pread_c6x
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#define sys_pwrite64 sys_pwrite_c6x
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#define sys_truncate64 sys_truncate64_c6x
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#define sys_ftruncate64 sys_ftruncate64_c6x
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#define sys_fadvise64 sys_fadvise64_c6x
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#define sys_fadvise64_64 sys_fadvise64_64_c6x
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#define sys_fallocate sys_fallocate_c6x
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/* Use sys_mmap_pgoff directly */
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#define sys_mmap2 sys_mmap_pgoff
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/*
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* Note that we can't include <linux/unistd.h> here since the header
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* guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well.
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*/
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void *sys_call_table[__NR_syscalls] = {
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[0 ... __NR_syscalls-1] = sys_ni_syscall,
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#include <asm/unistd.h>
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};
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