1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2005-2017 Andes Technology Corporation
4 #include <linux/syscalls.h>
5 #include <linux/uaccess.h>
7 #include <asm/cachectl.h>
8 #include <asm/proc-fns.h>
10 #include <asm/fp_udfiex_crtl.h>
12 SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
13 unsigned long, prot, unsigned long, flags,
14 unsigned long, fd, unsigned long, pgoff)
16 if (pgoff & (~PAGE_MASK >> 12))
19 return sys_mmap_pgoff(addr, len, prot, flags, fd,
20 pgoff >> (PAGE_SHIFT - 12));
23 SYSCALL_DEFINE4(fadvise64_64_wrapper,int, fd, int, advice, loff_t, offset,
26 return sys_fadvise64_64(fd, offset, len, advice);
29 SYSCALL_DEFINE3(cacheflush, unsigned int, start, unsigned int, end, int, cache)
31 struct vm_area_struct *vma;
32 bool flushi = true, wbd = true;
34 vma = find_vma(current->mm, start);
49 cpu_cache_wbinval_range_check(vma, start, end, flushi, wbd);
54 SYSCALL_DEFINE2(fp_udfiex_crtl, unsigned int, cmd, unsigned int, act)
56 #if IS_ENABLED(CONFIG_SUPPORT_DENORMAL_ARITHMETIC)
60 load_fpu(&init_fpuregs);
61 current->thread.fpu.UDF_IEX_trap = init_fpuregs.UDF_IEX_trap;
65 old_udf_iex = current->thread.fpu.UDF_IEX_trap;
66 act &= (FPCSR_mskUDFE | FPCSR_mskIEXE);
69 case DISABLE_UDF_IEX_TRAP:
70 current->thread.fpu.UDF_IEX_trap &= ~act;
72 case ENABLE_UDF_IEX_TRAP:
73 current->thread.fpu.UDF_IEX_trap |= act;
75 case GET_UDF_IEX_TRAP: