1 /* Prototypes for exported functions of Andes NDS32 cpu for GNU compiler 2 Copyright (C) 2012-2018 Free Software Foundation, Inc. 3 Contributed by Andes Technology Corporation. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 22 /* ------------------------------------------------------------------------ */ 23 24 /* Defining Data Structures for Per-function Information. */ 25 26 extern void nds32_init_expanders (void); 27 28 29 /* Register Usage. */ 30 31 /* -- Order of Allocation of Registers. */ 32 extern void nds32_adjust_reg_alloc_order (void); 33 34 /* Register Classes. */ 35 36 extern enum reg_class nds32_regno_reg_class (int); 37 38 39 /* Stack Layout and Calling Conventions. */ 40 41 /* -- Basic Stack Layout. */ 42 43 extern rtx nds32_dynamic_chain_address (rtx); 44 extern rtx nds32_return_addr_rtx (int, rtx); 45 46 /* -- Eliminating Frame Pointer and Arg Pointer. */ 47 48 extern HOST_WIDE_INT nds32_initial_elimination_offset (unsigned int, 49 unsigned int); 50 51 /* -- Passing Arguments in Registers. */ 52 53 extern void nds32_init_cumulative_args (CUMULATIVE_ARGS *, 54 tree, rtx, tree, int); 55 56 /* -- Function Entry and Exit. */ 57 58 extern void nds32_expand_prologue (void); 59 extern void nds32_expand_epilogue (bool); 60 extern void nds32_expand_prologue_v3push (void); 61 extern void nds32_expand_epilogue_v3pop (bool); 62 extern void nds32_emit_push_fpr_callee_saved (int); 63 extern void nds32_emit_pop_fpr_callee_saved (int); 64 extern void nds32_emit_v3pop_fpr_callee_saved (int); 65 66 /* Controlling Debugging Information Format. */ 67 68 extern unsigned int nds32_dbx_register_number (unsigned int); 69 70 /* ------------------------------------------------------------------------ */ 71 72 /* Auxiliary functions for lwm/smw. */ 73 74 extern bool nds32_valid_smw_lwm_base_p (rtx); 75 76 /* Auxiliary functions for expanding rtl used in nds32-multiple.md. */ 77 78 extern rtx nds32_expand_load_multiple (int, int, rtx, rtx, bool, rtx *); 79 extern rtx nds32_expand_store_multiple (int, int, rtx, rtx, bool, rtx *); 80 extern bool nds32_expand_movmemsi (rtx, rtx, rtx, rtx); 81 extern bool nds32_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx); 82 extern bool nds32_expand_strlen (rtx, rtx, rtx, rtx); 83 84 /* Auxiliary functions for expand unalign load instruction. */ 85 86 extern void nds32_expand_unaligned_load (rtx *, enum machine_mode); 87 88 /* Auxiliary functions for expand unalign store instruction. */ 89 90 extern void nds32_expand_unaligned_store (rtx *, enum machine_mode); 91 92 /* Auxiliary functions for multiple load/store predicate checking. */ 93 94 extern bool nds32_valid_multiple_load_store_p (rtx, bool, bool); 95 96 /* Auxiliary functions for guard function checking in pipelines.md. */ 97 98 extern bool nds32_n7_load_to_ii_p (rtx_insn *, rtx_insn *); 99 extern bool nds32_n7_last_load_to_ii_p (rtx_insn *, rtx_insn *); 100 101 extern bool nds32_n8_load_to_ii_p (rtx_insn *, rtx_insn *); 102 extern bool nds32_n8_load_bi_to_ii_p (rtx_insn *, rtx_insn *); 103 extern bool nds32_n8_load_to_ex_p (rtx_insn *, rtx_insn *); 104 extern bool nds32_n8_ex_to_ii_p (rtx_insn *, rtx_insn *); 105 extern bool nds32_n8_last_load_to_ii_p (rtx_insn *, rtx_insn *); 106 extern bool nds32_n8_last_load_two_to_ii_p (rtx_insn *, rtx_insn *); 107 extern bool nds32_n8_last_load_to_ex_p (rtx_insn *, rtx_insn *); 108 109 extern bool nds32_e8_load_to_ii_p (rtx_insn *, rtx_insn *); 110 extern bool nds32_e8_load_to_ex_p (rtx_insn *, rtx_insn *); 111 extern bool nds32_e8_ex_to_ii_p (rtx_insn *, rtx_insn *); 112 extern bool nds32_e8_last_load_to_ii_p (rtx_insn *, rtx_insn *); 113 extern bool nds32_e8_last_load_to_ex_p (rtx_insn *, rtx_insn *); 114 115 extern bool nds32_n9_2r1w_mm_to_ex_p (rtx_insn *, rtx_insn *); 116 extern bool nds32_n9_3r2w_mm_to_ex_p (rtx_insn *, rtx_insn *); 117 extern bool nds32_n9_last_load_to_ex_p (rtx_insn *, rtx_insn *); 118 119 120 /* Auxiliary functions for stack operation predicate checking. */ 121 122 extern bool nds32_valid_stack_push_pop_p (rtx, bool); 123 124 /* Auxiliary functions for bit operation detection. */ 125 126 extern int nds32_can_use_bclr_p (int); 127 extern int nds32_can_use_bset_p (int); 128 extern int nds32_can_use_btgl_p (int); 129 130 extern int nds32_can_use_bitci_p (int); 131 132 extern bool nds32_const_double_range_ok_p (rtx, machine_mode, 133 HOST_WIDE_INT, HOST_WIDE_INT); 134 135 /* Auxiliary function for 'Computing the Length of an Insn'. */ 136 137 extern int nds32_adjust_insn_length (rtx_insn *, int); 138 139 /* Auxiliary functions for FP_AS_GP detection. */ 140 141 extern int nds32_fp_as_gp_check_available (void); 142 143 extern bool nds32_symbol_load_store_p (rtx_insn *); 144 145 /* Auxiliary functions for jump table generation. */ 146 147 extern const char *nds32_output_casesi_pc_relative (rtx *); 148 extern const char *nds32_output_casesi (rtx *); 149 150 /* Auxiliary functions for conditional branch generation. */ 151 152 extern enum nds32_expand_result_type nds32_expand_cbranch (rtx *); 153 extern enum nds32_expand_result_type nds32_expand_cstore (rtx *); 154 extern void nds32_expand_float_cbranch (rtx *); 155 extern void nds32_expand_float_cstore (rtx *); 156 157 /* Auxiliary functions for conditional move generation. */ 158 159 extern enum nds32_expand_result_type nds32_expand_movcc (rtx *); 160 extern void nds32_expand_float_movcc (rtx *); 161 162 163 /* Auxiliary functions to identify long-call symbol. */ 164 extern bool nds32_long_call_p (rtx); 165 166 /* Auxiliary functions to identify conditional move comparison operand. */ 167 168 extern int nds32_cond_move_p (rtx); 169 170 /* Auxiliary functions to identify 16 bit addresing mode. */ 171 172 extern enum nds32_16bit_address_type nds32_mem_format (rtx); 173 174 /* Auxiliary functions to identify floating-point addresing mode. */ 175 176 extern bool nds32_float_mem_operand_p (rtx); 177 178 /* Auxiliary functions to output assembly code. */ 179 180 extern const char *nds32_output_16bit_store (rtx *, int); 181 extern const char *nds32_output_16bit_load (rtx *, int); 182 extern const char *nds32_output_32bit_store (rtx *, int); 183 extern const char *nds32_output_32bit_load (rtx *, int); 184 extern const char *nds32_output_32bit_load_s (rtx *, int); 185 extern const char *nds32_output_float_load(rtx *); 186 extern const char *nds32_output_float_store(rtx *); 187 extern const char *nds32_output_smw_single_word (rtx *); 188 extern const char *nds32_output_lmw_single_word (rtx *); 189 extern const char *nds32_output_double (rtx *, bool); 190 extern const char *nds32_output_cbranchsi4_equality_zero (rtx_insn *, rtx *); 191 extern const char *nds32_output_cbranchsi4_equality_reg (rtx_insn *, rtx *); 192 extern const char *nds32_output_cbranchsi4_equality_reg_or_const_int (rtx_insn *, 193 rtx *); 194 extern const char *nds32_output_cbranchsi4_greater_less_zero (rtx_insn *, rtx *); 195 196 extern const char *nds32_output_call (rtx, rtx *, rtx, 197 const char *, const char *, bool); 198 199 200 /* Auxiliary functions to output stack push/pop instruction. */ 201 202 extern const char *nds32_output_stack_push (rtx); 203 extern const char *nds32_output_stack_pop (rtx); 204 extern const char *nds32_output_return (void); 205 206 /* Auxiliary functions to split double word RTX pattern. */ 207 208 extern void nds32_spilt_doubleword (rtx *, bool); 209 210 /* Auxiliary functions to split large constant RTX pattern. */ 211 212 extern void nds32_expand_constant (machine_mode, 213 HOST_WIDE_INT, rtx, rtx); 214 215 /* Auxiliary functions to check using return with null epilogue. */ 216 217 extern int nds32_can_use_return_insn (void); 218 extern scalar_int_mode nds32_case_vector_shorten_mode (int, int, rtx); 219 220 /* Auxiliary functions to decide output alignment or not. */ 221 222 extern int nds32_target_alignment (rtx_insn *); 223 extern unsigned int nds32_data_alignment (tree, unsigned int); 224 extern unsigned int nds32_local_alignment (tree, unsigned int); 225 226 /* Auxiliary functions to expand builtin functions. */ 227 228 extern void nds32_init_builtins_impl (void); 229 extern rtx nds32_expand_builtin_impl (tree, rtx, rtx, 230 machine_mode, int); 231 extern tree nds32_builtin_decl_impl (unsigned, bool); 232 233 /* Auxiliary functions for ISR implementation. */ 234 235 extern void nds32_check_isr_attrs_conflict (tree, tree); 236 extern void nds32_construct_isr_vectors_information (tree, const char *); 237 extern void nds32_asm_file_start_for_isr (void); 238 extern void nds32_asm_file_end_for_isr (void); 239 extern bool nds32_isr_function_p (tree); 240 241 /* Auxiliary functions for cost calculation. */ 242 243 extern bool nds32_rtx_costs_impl (rtx, machine_mode, int, int, int *, bool); 244 extern int nds32_address_cost_impl (rtx, machine_mode, addr_space_t, bool); 245 246 /* Auxiliary functions for pre-define marco. */ 247 extern void nds32_cpu_cpp_builtins(struct cpp_reader *); 248 249 extern bool nds32_split_double_word_load_store_p (rtx *,bool); 250 251 namespace nds32 { 252 253 extern rtx extract_pattern_from_insn (rtx); 254 255 size_t parallel_elements (rtx); 256 rtx parallel_element (rtx, int); 257 bool load_single_p (rtx_insn *); 258 bool store_single_p (rtx_insn *); 259 bool load_double_p (rtx_insn *); 260 bool store_double_p (rtx_insn *); 261 bool post_update_insn_p (rtx_insn *); 262 bool immed_offset_p (rtx); 263 int find_post_update_rtx (rtx_insn *); 264 rtx extract_mem_rtx (rtx_insn *); 265 rtx extract_base_reg (rtx_insn *); 266 267 rtx extract_shift_reg (rtx); 268 269 bool movd44_insn_p (rtx_insn *); 270 rtx extract_movd44_odd_reg (rtx_insn *); 271 272 rtx extract_mac_non_acc_rtx (rtx_insn *); 273 274 rtx extract_branch_target_rtx (rtx_insn *); 275 rtx extract_branch_condition_rtx (rtx_insn *); 276 } // namespace nds32 277 278 extern bool nds32_use_load_post_increment(machine_mode); 279 280 /* Functions for create nds32 specific optimization pass. */ 281 extern rtl_opt_pass *make_pass_nds32_relax_opt (gcc::context *); 282 283 /* ------------------------------------------------------------------------ */ 284