1*38fd1498Szrj /* Definitions for code generation pass of GNU compiler. 2*38fd1498Szrj Copyright (C) 2001-2018 Free Software Foundation, Inc. 3*38fd1498Szrj 4*38fd1498Szrj This file is part of GCC. 5*38fd1498Szrj 6*38fd1498Szrj GCC is free software; you can redistribute it and/or modify 7*38fd1498Szrj it under the terms of the GNU General Public License as published by 8*38fd1498Szrj the Free Software Foundation; either version 3, or (at your option) 9*38fd1498Szrj any later version. 10*38fd1498Szrj 11*38fd1498Szrj GCC is distributed in the hope that it will be useful, 12*38fd1498Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 13*38fd1498Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*38fd1498Szrj GNU General Public License for more details. 15*38fd1498Szrj 16*38fd1498Szrj You should have received a copy of the GNU General Public License 17*38fd1498Szrj along with GCC; see the file COPYING3. If not see 18*38fd1498Szrj <http://www.gnu.org/licenses/>. */ 19*38fd1498Szrj 20*38fd1498Szrj #ifndef GCC_LIBFUNCS_H 21*38fd1498Szrj #define GCC_LIBFUNCS_H 22*38fd1498Szrj 23*38fd1498Szrj 24*38fd1498Szrj /* Enumeration of indexes into libfunc_table. */ 25*38fd1498Szrj enum libfunc_index 26*38fd1498Szrj { 27*38fd1498Szrj LTI_unwind_sjlj_register, 28*38fd1498Szrj LTI_unwind_sjlj_unregister, 29*38fd1498Szrj LTI_synchronize, 30*38fd1498Szrj LTI_MAX 31*38fd1498Szrj }; 32*38fd1498Szrj 33*38fd1498Szrj /* Information about an optab-related libfunc. The op field is logically 34*38fd1498Szrj an enum optab_d, and the mode fields are logically machine_mode. 35*38fd1498Szrj However, in the absence of forward-declared enums, there's no practical 36*38fd1498Szrj benefit of pulling in the defining headers. 37*38fd1498Szrj 38*38fd1498Szrj We use the same hashtable for normal optabs and conversion optabs. In 39*38fd1498Szrj the first case mode2 is forced to VOIDmode. */ 40*38fd1498Szrj 41*38fd1498Szrj struct GTY((for_user)) libfunc_entry { 42*38fd1498Szrj int op, mode1, mode2; 43*38fd1498Szrj rtx libfunc; 44*38fd1498Szrj }; 45*38fd1498Szrj 46*38fd1498Szrj /* Descriptor for libfunc_entry. */ 47*38fd1498Szrj 48*38fd1498Szrj struct libfunc_hasher : ggc_ptr_hash<libfunc_entry> 49*38fd1498Szrj { 50*38fd1498Szrj static hashval_t hash (libfunc_entry *); 51*38fd1498Szrj static bool equal (libfunc_entry *, libfunc_entry *); 52*38fd1498Szrj }; 53*38fd1498Szrj 54*38fd1498Szrj /* Target-dependent globals. */ 55*38fd1498Szrj struct GTY(()) target_libfuncs { 56*38fd1498Szrj /* SYMBOL_REF rtx's for the library functions that are called 57*38fd1498Szrj implicitly and not via optabs. */ 58*38fd1498Szrj rtx x_libfunc_table[LTI_MAX]; 59*38fd1498Szrj 60*38fd1498Szrj /* Hash table used to convert declarations into nodes. */ 61*38fd1498Szrj hash_table<libfunc_hasher> *GTY(()) x_libfunc_hash; 62*38fd1498Szrj }; 63*38fd1498Szrj 64*38fd1498Szrj extern GTY(()) struct target_libfuncs default_target_libfuncs; 65*38fd1498Szrj #if SWITCHABLE_TARGET 66*38fd1498Szrj extern struct target_libfuncs *this_target_libfuncs; 67*38fd1498Szrj #else 68*38fd1498Szrj #define this_target_libfuncs (&default_target_libfuncs) 69*38fd1498Szrj #endif 70*38fd1498Szrj 71*38fd1498Szrj #define libfunc_table \ 72*38fd1498Szrj (this_target_libfuncs->x_libfunc_table) 73*38fd1498Szrj 74*38fd1498Szrj /* Accessor macros for libfunc_table. */ 75*38fd1498Szrj 76*38fd1498Szrj #define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register]) 77*38fd1498Szrj #define unwind_sjlj_unregister_libfunc \ 78*38fd1498Szrj (libfunc_table[LTI_unwind_sjlj_unregister]) 79*38fd1498Szrj #define synchronize_libfunc (libfunc_table[LTI_synchronize]) 80*38fd1498Szrj 81*38fd1498Szrj /* In explow.c */ 82*38fd1498Szrj extern void set_stack_check_libfunc (const char *); 83*38fd1498Szrj 84*38fd1498Szrj #endif /* GCC_LIBFUNCS_H */ 85