text: /* The host_hooks data structure.
     Copyright (C) 2003-2015 Free Software Foundation, Inc.
  
  This file is part of GCC.
  
  GCC is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 3, or (at your option)
  any later version.
  
  GCC is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with GCC; see the file COPYING3.  If not see
  <http://www.gnu.org/licenses/>.  */
  
  #ifndef GCC_HOST_HOOKS_H
  #define GCC_HOST_HOOKS_H
  
  struct host_hooks
  {
    void (*extra_signals) (void);
  
    /* Identify an address that's likely to be free in a subsequent invocation
       of the compiler.  The area should be able to hold SIZE bytes.  FD is an
       open file descriptor if the host would like to probe with mmap.  */
    void * (*gt_pch_get_address) (size_t size, int fd);
  
    /* ADDR is an address returned by gt_pch_get_address.  Attempt to allocate
       SIZE bytes at the same address and load it with the data from FD at
       OFFSET.  Return -1 if we couldn't allocate memory at ADDR, return 0
       if the memory is allocated but the data not loaded, return 1 if done.  */
    int (*gt_pch_use_address) (void *addr, size_t size, int fd, size_t offset);
  
    /*  Return the alignment required for allocating virtual memory. Usually
        this is the same as pagesize.  */
    size_t (*gt_pch_alloc_granularity) (void);
  
    /* Whenever you add entries here, make sure you adjust hosthooks-def.h.  */
  };
  
  /* Each host provides its own.  */
  extern const struct host_hooks host_hooks;
  
  #endif /* GCC_LANG_HOOKS_H */
  