Add support for sys_mmap for MIPS64 N64

lss/linux_syscall_support.h

 /* Copyright (c) 2005-2011, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 3862 matching lines @@
     }
   #elif defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI64
     LSS_INLINE _syscall4(ssize_t, pread64,        int,         f,
                          void *,         b, size_t,   c,
                          loff_t,         o)
     LSS_INLINE _syscall4(ssize_t, pwrite64,       int,         f,
                          const void *,   b, size_t,   c,
                          loff_t,         o)
     LSS_INLINE _syscall3(int,     readahead,      int,         f,
                          loff_t,         o, unsigned, c)
+    LSS_INLINE _syscall6(void *, mmap, void *, addr, size_t, length, int, prot,
+                         int, flags, int, fd, int64_t, offset)
   #else
     #define __NR__pread64   __NR_pread64
     #define __NR__pwrite64  __NR_pwrite64
     #define __NR__readahead __NR_readahead
     #if defined(__ARM_EABI__) || defined(__mips__)
       /* On ARM and MIPS, a 64-bit parameter has to be in an even-odd register
        * pair. Hence these calls ignore their fourth argument (r3) so that their
        * fifth and sixth make such a pair (r4,r5).
        */
       #define LSS_LLARG_PAD 0,
@@ skipping 126 matching lines @@
 # pragma pop_macro("fstat64")
 # pragma pop_macro("lstat64")
 #endif
 
 #if defined(__cplusplus) && !defined(SYS_CPLUSPLUS)
 }
 #endif
 
 #endif
 #endif