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1 /* The host_hooks data structure.
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2 Copyright 2003, 2004, 2007 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_HOST_HOOKS_H
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21 #define GCC_HOST_HOOKS_H
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22
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23 struct host_hooks
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24 {
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25 void (*extra_signals) (void);
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26
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27 /* Identify an address that's likely to be free in a subsequent invocation
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28 of the compiler. The area should be able to hold SIZE bytes. FD is an
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29 open file descriptor if the host would like to probe with mmap. */
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30 void * (*gt_pch_get_address) (size_t size, int fd);
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31
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32 /* ADDR is an address returned by gt_pch_get_address. Attempt to allocate
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33 SIZE bytes at the same address and load it with the data from FD at
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34 OFFSET. Return -1 if we couldn't allocate memory at ADDR, return 0
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35 if the memory is allocated but the data not loaded, return 1 if done. */
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36 int (*gt_pch_use_address) (void *addr, size_t size, int fd, size_t offset);
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37
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38 /* Return the alignment required for allocating virtual memory. Usually
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39 this is the same as pagesize. */
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40 size_t (*gt_pch_alloc_granularity) (void);
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41
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42 /* Whenever you add entries here, make sure you adjust hosthooks-def.h. */
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43 };
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44
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45 /* Each host provides its own. */
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46 extern const struct host_hooks host_hooks;
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47
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48 #endif /* GCC_LANG_HOOKS_H */
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