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annotate gcc/libfuncs.h @ 132:d34655255c78

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update gcc-8.2
author mir3636
date Thu, 25 Oct 2018 10:21:07 +0900
parents 84e7813d76e9
children 1830386684a0
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1 /* Definitions for code generation pass of GNU compiler.
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2 Copyright (C) 2001-2018 Free Software Foundation, Inc.
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4 This file is part of GCC.
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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_LIBFUNCS_H
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21 #define GCC_LIBFUNCS_H
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22
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23
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24 /* Enumeration of indexes into libfunc_table. */
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25 enum libfunc_index
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26 {
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27 LTI_unwind_sjlj_register,
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28 LTI_unwind_sjlj_unregister,
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29 LTI_synchronize,
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30 LTI_MAX
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31 };
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32
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33 /* Information about an optab-related libfunc. The op field is logically
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34 an enum optab_d, and the mode fields are logically machine_mode.
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35 However, in the absence of forward-declared enums, there's no practical
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36 benefit of pulling in the defining headers.
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37
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38 We use the same hashtable for normal optabs and conversion optabs. In
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39 the first case mode2 is forced to VOIDmode. */
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40
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41 struct GTY((for_user)) libfunc_entry {
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42 int op, mode1, mode2;
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43 rtx libfunc;
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44 };
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45
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46 /* Descriptor for libfunc_entry. */
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47
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48 struct libfunc_hasher : ggc_ptr_hash<libfunc_entry>
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49 {
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50 static hashval_t hash (libfunc_entry *);
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51 static bool equal (libfunc_entry *, libfunc_entry *);
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52 };
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53
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54 /* Target-dependent globals. */
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55 struct GTY(()) target_libfuncs {
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56 /* SYMBOL_REF rtx's for the library functions that are called
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57 implicitly and not via optabs. */
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58 rtx x_libfunc_table[LTI_MAX];
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59
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60 /* Hash table used to convert declarations into nodes. */
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61 hash_table<libfunc_hasher> *GTY(()) x_libfunc_hash;
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62 };
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64 extern GTY(()) struct target_libfuncs default_target_libfuncs;
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65 #if SWITCHABLE_TARGET
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66 extern struct target_libfuncs *this_target_libfuncs;
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67 #else
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68 #define this_target_libfuncs (&default_target_libfuncs)
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69 #endif
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71 #define libfunc_table \
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72 (this_target_libfuncs->x_libfunc_table)
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74 /* Accessor macros for libfunc_table. */
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76 #define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register])
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77 #define unwind_sjlj_unregister_libfunc \
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78 (libfunc_table[LTI_unwind_sjlj_unregister])
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79 #define synchronize_libfunc (libfunc_table[LTI_synchronize])
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81 /* In explow.c */
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82 extern void set_stack_check_libfunc (const char *);
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84 #endif /* GCC_LIBFUNCS_H */