85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* Definitions for code generation pass of GNU compiler.
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Copyright (C) 2001-2018 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_LIBFUNCS_H
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#define GCC_LIBFUNCS_H
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/* Enumeration of indexes into libfunc_table. */
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enum libfunc_index
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{
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LTI_unwind_sjlj_register,
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LTI_unwind_sjlj_unregister,
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LTI_synchronize,
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LTI_MAX
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};
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/* Information about an optab-related libfunc. The op field is logically
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an enum optab_d, and the mode fields are logically machine_mode.
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However, in the absence of forward-declared enums, there's no practical
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benefit of pulling in the defining headers.
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We use the same hashtable for normal optabs and conversion optabs. In
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the first case mode2 is forced to VOIDmode. */
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struct GTY((for_user)) libfunc_entry {
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int op, mode1, mode2;
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rtx libfunc;
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};
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/* Descriptor for libfunc_entry. */
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struct libfunc_hasher : ggc_ptr_hash<libfunc_entry>
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{
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static hashval_t hash (libfunc_entry *);
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static bool equal (libfunc_entry *, libfunc_entry *);
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};
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/* Target-dependent globals. */
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struct GTY(()) target_libfuncs {
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/* SYMBOL_REF rtx's for the library functions that are called
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implicitly and not via optabs. */
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rtx x_libfunc_table[LTI_MAX];
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/* Hash table used to convert declarations into nodes. */
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hash_table<libfunc_hasher> *GTY(()) x_libfunc_hash;
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};
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extern GTY(()) struct target_libfuncs default_target_libfuncs;
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#if SWITCHABLE_TARGET
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extern struct target_libfuncs *this_target_libfuncs;
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#else
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#define this_target_libfuncs (&default_target_libfuncs)
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#endif
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#define libfunc_table \
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(this_target_libfuncs->x_libfunc_table)
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/* Accessor macros for libfunc_table. */
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#define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register])
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#define unwind_sjlj_unregister_libfunc \
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(libfunc_table[LTI_unwind_sjlj_unregister])
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#define synchronize_libfunc (libfunc_table[LTI_synchronize])
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/* In explow.c */
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extern void set_stack_check_libfunc (const char *);
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#endif /* GCC_LIBFUNCS_H */
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