1 /* Prototypes of target machine for GNU compiler. LoongArch version. 2 Copyright (C) 2021-2022 Free Software Foundation, Inc. 3 Contributed by Loongson Ltd. 4 Based on MIPS target for GNU compiler. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3, or (at your option) 11 any later version. 12 13 GCC is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #ifndef GCC_LOONGARCH_PROTOS_H 23 #define GCC_LOONGARCH_PROTOS_H 24 25 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address. 26 27 SYMBOL_GOT_DISP 28 The symbol's value will be loaded directly from the GOT. 29 30 SYMBOL_TLS 31 A thread-local symbol. 32 33 SYMBOL_TLSGD 34 SYMBOL_TLSLDM 35 UNSPEC wrappers around SYMBOL_TLS, corresponding to the 36 thread-local storage relocation operators. 37 */ 38 enum loongarch_symbol_type { 39 SYMBOL_GOT_DISP, 40 SYMBOL_TLS, 41 SYMBOL_TLSGD, 42 SYMBOL_TLSLDM, 43 }; 44 #define NUM_SYMBOL_TYPES (SYMBOL_TLSLDM + 1) 45 46 /* Routines implemented in loongarch.c. */ 47 extern rtx loongarch_emit_move (rtx, rtx); 48 extern HOST_WIDE_INT loongarch_initial_elimination_offset (int, int); 49 extern void loongarch_expand_prologue (void); 50 extern void loongarch_expand_epilogue (int); 51 extern bool loongarch_can_use_return_insn (void); 52 53 extern bool loongarch_symbolic_constant_p (rtx, enum loongarch_symbol_type *); 54 extern int loongarch_regno_mode_ok_for_base_p (int, machine_mode, bool); 55 extern int loongarch_address_insns (rtx, machine_mode, bool); 56 extern int loongarch_const_insns (rtx); 57 extern int loongarch_split_const_insns (rtx); 58 extern int loongarch_split_128bit_const_insns (rtx); 59 extern int loongarch_load_store_insns (rtx, rtx_insn *); 60 extern int loongarch_idiv_insns (machine_mode); 61 #ifdef RTX_CODE 62 extern void loongarch_emit_binary (enum rtx_code, rtx, rtx, rtx); 63 #endif 64 extern bool loongarch_split_symbol (rtx, rtx, machine_mode, rtx *); 65 extern rtx loongarch_unspec_address (rtx, enum loongarch_symbol_type); 66 extern rtx loongarch_strip_unspec_address (rtx); 67 extern void loongarch_move_integer (rtx, rtx, unsigned HOST_WIDE_INT); 68 extern bool loongarch_legitimize_move (machine_mode, rtx, rtx); 69 extern rtx loongarch_legitimize_call_address (rtx); 70 71 extern rtx loongarch_subword (rtx, bool); 72 extern bool loongarch_split_move_p (rtx, rtx); 73 extern void loongarch_split_move (rtx, rtx, rtx); 74 extern bool loongarch_split_move_insn_p (rtx, rtx); 75 extern void loongarch_split_move_insn (rtx, rtx, rtx); 76 extern const char *loongarch_output_move (rtx, rtx); 77 extern bool loongarch_cfun_has_cprestore_slot_p (void); 78 #ifdef RTX_CODE 79 extern void loongarch_expand_scc (rtx *); 80 extern void loongarch_expand_conditional_branch (rtx *); 81 extern void loongarch_expand_conditional_move (rtx *); 82 extern void loongarch_expand_conditional_trap (rtx); 83 #endif 84 extern void loongarch_set_return_address (rtx, rtx); 85 extern bool loongarch_move_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int); 86 extern bool loongarch_expand_block_move (rtx, rtx, rtx); 87 extern bool loongarch_do_optimize_block_move_p (void); 88 89 extern bool loongarch_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT, 90 HOST_WIDE_INT, bool); 91 extern bool loongarch_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT, 92 HOST_WIDE_INT); 93 extern HOST_WIDE_INT loongarch_debugger_offset (rtx, HOST_WIDE_INT); 94 95 extern void loongarch_output_external (FILE *, tree, const char *); 96 extern void loongarch_output_ascii (FILE *, const char *, size_t); 97 extern bool loongarch_small_data_pattern_p (rtx); 98 extern rtx loongarch_rewrite_small_data (rtx); 99 extern rtx loongarch_return_addr (int, rtx); 100 101 extern enum reg_class loongarch_secondary_reload_class (enum reg_class, 102 machine_mode, 103 rtx, bool); 104 extern int loongarch_class_max_nregs (enum reg_class, machine_mode); 105 106 extern machine_mode loongarch_hard_regno_caller_save_mode (unsigned int, 107 unsigned int, 108 machine_mode); 109 extern int loongarch_adjust_insn_length (rtx_insn *, int); 110 extern const char *loongarch_output_conditional_branch (rtx_insn *, rtx *, 111 const char *, 112 const char *); 113 extern const char *loongarch_output_order_conditional_branch (rtx_insn *, 114 rtx *, 115 bool); 116 extern const char *loongarch_output_equal_conditional_branch (rtx_insn *, 117 rtx *, 118 bool); 119 extern const char *loongarch_output_division (const char *, rtx *); 120 extern const char *loongarch_output_probe_stack_range (rtx, rtx, rtx); 121 extern bool loongarch_hard_regno_rename_ok (unsigned int, unsigned int); 122 extern int loongarch_dspalu_bypass_p (rtx, rtx); 123 extern rtx loongarch_prefetch_cookie (rtx, rtx); 124 125 extern bool loongarch_global_symbol_p (const_rtx); 126 extern bool loongarch_global_symbol_noweak_p (const_rtx); 127 extern bool loongarch_weak_symbol_p (const_rtx); 128 extern bool loongarch_symbol_binds_local_p (const_rtx); 129 130 extern const char *current_section_name (void); 131 extern unsigned int current_section_flags (void); 132 extern bool loongarch_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT); 133 134 union loongarch_gen_fn_ptrs 135 { 136 rtx (*fn_8) (rtx, rtx, rtx, rtx, rtx, rtx, rtx, rtx); 137 rtx (*fn_7) (rtx, rtx, rtx, rtx, rtx, rtx, rtx); 138 rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx); 139 rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx); 140 rtx (*fn_4) (rtx, rtx, rtx, rtx); 141 }; 142 143 extern void loongarch_expand_atomic_qihi (union loongarch_gen_fn_ptrs, 144 rtx, rtx, rtx, rtx, rtx); 145 146 extern bool loongarch_signed_immediate_p (unsigned HOST_WIDE_INT, int, int); 147 extern bool loongarch_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int); 148 extern bool loongarch_12bit_offset_address_p (rtx, machine_mode); 149 extern bool loongarch_14bit_shifted_offset_address_p (rtx, machine_mode); 150 extern bool loongarch_base_index_address_p (rtx, machine_mode); 151 extern rtx loongarch_expand_thread_pointer (rtx); 152 153 extern bool loongarch_eh_uses (unsigned int); 154 extern bool loongarch_epilogue_uses (unsigned int); 155 extern bool loongarch_load_store_bonding_p (rtx *, machine_mode, bool); 156 extern bool loongarch_split_symbol_type (enum loongarch_symbol_type); 157 158 typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx); 159 160 extern void loongarch_register_frame_header_opt (void); 161 162 /* Routines implemented in loongarch-c.c. */ 163 void loongarch_cpu_cpp_builtins (cpp_reader *); 164 165 extern void loongarch_init_builtins (void); 166 extern void loongarch_atomic_assign_expand_fenv (tree *, tree *, tree *); 167 extern tree loongarch_builtin_decl (unsigned int, bool); 168 extern rtx loongarch_expand_builtin (tree, rtx, rtx subtarget ATTRIBUTE_UNUSED, 169 machine_mode, int); 170 extern tree loongarch_build_builtin_va_list (void); 171 172 #endif /* ! GCC_LOONGARCH_PROTOS_H */ 173