diff options
Diffstat (limited to 'arch/csky/kernel/syscall.c')
-rw-r--r-- | arch/csky/kernel/syscall.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/csky/kernel/syscall.c b/arch/csky/kernel/syscall.c new file mode 100644 index 0000000000..3d30e58a45 --- /dev/null +++ b/arch/csky/kernel/syscall.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#include <linux/syscalls.h> + +SYSCALL_DEFINE1(set_thread_area, unsigned long, addr) +{ + struct thread_info *ti = task_thread_info(current); + struct pt_regs *reg = current_pt_regs(); + + reg->tls = addr; + ti->tp_value = addr; + + return 0; +} + +SYSCALL_DEFINE6(mmap2, + unsigned long, addr, + unsigned long, len, + unsigned long, prot, + unsigned long, flags, + unsigned long, fd, + off_t, offset) +{ + if (unlikely(offset & (~PAGE_MASK >> 12))) + return -EINVAL; + + return ksys_mmap_pgoff(addr, len, prot, flags, fd, + offset >> (PAGE_SHIFT - 12)); +} + +/* + * for abiv1 the 64bits args should be even th, So we need mov the advice + * forward. + */ +SYSCALL_DEFINE4(csky_fadvise64_64, + int, fd, + int, advice, + loff_t, offset, + loff_t, len) +{ + return ksys_fadvise64_64(fd, offset, len, advice); +} |