SYSCALL5(_SysReadAt, SYS_READAT) // int, uint, uint64, void*
SYSCALL3(_SysWrite, SYS_WRITE) // int, uint, void*
SYSCALL5(_SysWriteAt, SYS_WRITEAT) // int, uint, uint64, void*
+SYSCALL3(_SysTruncate, SYS_TRUNCATE) // int, uint64
SYSCALL4(_SysSeek, SYS_SEEK) // int, uint64_t, int
SYSCALL1(_SysTell, SYS_TELL) // int
SYSCALL3(_SysFInfo, SYS_FINFO) // int, void*, int
SYSCALL1(_SysMkDir, SYS_MKDIR) // const char*
SYSCALL1(_SysUnlink, SYS_UNLINK) // const char*
+SYSCALL6(_SysMMap, SYS_MMAP)
+SYSCALL2(_SysMUnMap, SYS_MUNMAP)
+
+SYSCALL1(_SysMarshalFD, SYS_MARSHALFD)
+SYSCALL2(_SysUnMarshalFD, SYS_UNMARSHALFD)
+