// 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> };