1 /* Prototypes for exported functions of Andes NDS32 cpu for GNU compiler 2 Copyright (C) 2012-2019 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 manipulation DI mode. */ 73 74 extern rtx nds32_di_high_part_subreg(rtx); 75 extern rtx nds32_di_low_part_subreg(rtx); 76 77 /* Auxiliary functions for expanding rtl used in nds32-multiple.md. */ 78 79 extern rtx nds32_expand_load_multiple (int, int, rtx, rtx, bool, rtx *); 80 extern rtx nds32_expand_store_multiple (int, int, rtx, rtx, bool, rtx *); 81 extern bool nds32_expand_movmemsi (rtx, rtx, rtx, rtx); 82 extern bool nds32_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx); 83 extern bool nds32_expand_strlen (rtx, rtx, rtx, rtx); 84 85 /* Auxiliary functions for expand unalign load instruction. */ 86 87 extern void nds32_expand_unaligned_load (rtx *, enum machine_mode); 88 89 /* Auxiliary functions for expand unalign store instruction. */ 90 91 extern void nds32_expand_unaligned_store (rtx *, enum machine_mode); 92 93 /* Auxiliary functions for multiple load/store predicate checking. */ 94 95 extern bool nds32_valid_multiple_load_store_p (rtx, bool, bool); 96 97 /* Auxiliary functions for guard function checking in pipelines.md. */ 98 99 extern bool nds32_n7_load_to_ii_p (rtx_insn *, rtx_insn *); 100 extern bool nds32_n7_last_load_to_ii_p (rtx_insn *, rtx_insn *); 101 102 extern bool nds32_n8_load_to_ii_p (rtx_insn *, rtx_insn *); 103 extern bool nds32_n8_load_bi_to_ii_p (rtx_insn *, rtx_insn *); 104 extern bool nds32_n8_load_to_ex_p (rtx_insn *, rtx_insn *); 105 extern bool nds32_n8_ex_to_ii_p (rtx_insn *, rtx_insn *); 106 extern bool nds32_n8_last_load_to_ii_p (rtx_insn *, rtx_insn *); 107 extern bool nds32_n8_last_load_two_to_ii_p (rtx_insn *, rtx_insn *); 108 extern bool nds32_n8_last_load_to_ex_p (rtx_insn *, rtx_insn *); 109 110 extern bool nds32_e8_load_to_ii_p (rtx_insn *, rtx_insn *); 111 extern bool nds32_e8_load_to_ex_p (rtx_insn *, rtx_insn *); 112 extern bool nds32_e8_ex_to_ii_p (rtx_insn *, rtx_insn *); 113 extern bool nds32_e8_last_load_to_ii_p (rtx_insn *, rtx_insn *); 114 extern bool nds32_e8_last_load_to_ex_p (rtx_insn *, rtx_insn *); 115 116 extern bool nds32_n9_2r1w_mm_to_ex_p (rtx_insn *, rtx_insn *); 117 extern bool nds32_n9_3r2w_mm_to_ex_p (rtx_insn *, rtx_insn *); 118 extern bool nds32_n9_last_load_to_ex_p (rtx_insn *, rtx_insn *); 119 120 extern bool nds32_n10_ex_to_ex_p (rtx_insn *, rtx_insn *); 121 extern bool nds32_n10_mm_to_ex_p (rtx_insn *, rtx_insn *); 122 extern bool nds32_n10_last_load_to_ex_p (rtx_insn *, rtx_insn *); 123 124 extern bool nds32_gw_ex_to_ex_p (rtx_insn *, rtx_insn *); 125 extern bool nds32_gw_mm_to_ex_p (rtx_insn *, rtx_insn *); 126 extern bool nds32_gw_last_load_to_ex_p (rtx_insn *, rtx_insn *); 127 128 extern bool nds32_n13_e2_to_e1_p (rtx_insn *, rtx_insn *); 129 extern bool nds32_n13_load_to_e1_p (rtx_insn *, rtx_insn *); 130 extern bool nds32_n13_load_to_e2_p (rtx_insn *, rtx_insn *); 131 extern bool nds32_n13_last_load_to_e1_p (rtx_insn *, rtx_insn *); 132 extern bool nds32_n13_last_load_to_e2_p (rtx_insn *, rtx_insn *); 133 extern bool nds32_n13_last_two_load_to_e1_p (rtx_insn *, rtx_insn *); 134 135 /* Auxiliary functions for stack operation predicate checking. */ 136 137 extern bool nds32_valid_stack_push_pop_p (rtx, bool); 138 139 /* Auxiliary functions for bit operation detection. */ 140 141 extern bool nds32_can_use_bclr_p (HOST_WIDE_INT); 142 extern bool nds32_can_use_bset_p (HOST_WIDE_INT); 143 extern bool nds32_can_use_btgl_p (HOST_WIDE_INT); 144 145 extern bool nds32_can_use_bitci_p (HOST_WIDE_INT); 146 147 extern bool nds32_const_double_range_ok_p (rtx, machine_mode, 148 HOST_WIDE_INT, HOST_WIDE_INT); 149 150 extern bool nds32_const_unspec_p (rtx x); 151 152 /* Auxiliary function for 'Computing the Length of an Insn'. */ 153 154 extern int nds32_adjust_insn_length (rtx_insn *, int); 155 156 /* Auxiliary functions for FP_AS_GP detection. */ 157 158 extern bool nds32_symbol_load_store_p (rtx_insn *); 159 extern bool nds32_naked_function_p (tree); 160 161 /* Auxiliary functions for jump table generation. */ 162 163 extern const char *nds32_output_casesi_pc_relative (rtx *); 164 extern const char *nds32_output_casesi (rtx *); 165 166 /* Auxiliary functions for conditional branch generation. */ 167 168 extern enum nds32_expand_result_type nds32_expand_cbranch (rtx *); 169 extern enum nds32_expand_result_type nds32_expand_cstore (rtx *); 170 extern void nds32_expand_float_cbranch (rtx *); 171 extern void nds32_expand_float_cstore (rtx *); 172 173 /* Auxiliary functions for conditional move generation. */ 174 175 extern enum nds32_expand_result_type nds32_expand_movcc (rtx *); 176 extern void nds32_expand_float_movcc (rtx *); 177 178 /* Auxiliary functions for expand extv/insv instruction. */ 179 180 extern enum nds32_expand_result_type nds32_expand_extv (rtx *); 181 extern enum nds32_expand_result_type nds32_expand_insv (rtx *); 182 183 /* Auxiliary functions for expand PIC instruction. */ 184 185 extern void nds32_expand_pic_move (rtx *); 186 187 /* Auxiliary functions to legitimize PIC address. */ 188 189 extern rtx nds32_legitimize_pic_address (rtx); 190 191 /* Auxiliary functions for expand TLS instruction. */ 192 193 extern void nds32_expand_tls_move (rtx *); 194 195 /* Auxiliary functions to legitimize TLS address. */ 196 197 extern rtx nds32_legitimize_tls_address (rtx); 198 199 /* Auxiliary functions to identify thread-local symbol. */ 200 201 extern bool nds32_tls_referenced_p (rtx); 202 203 /* Auxiliary functions for expand ICT instruction. */ 204 205 extern void nds32_expand_ict_move (rtx *); 206 207 /* Auxiliary functions to legitimize address for indirect-call symbol. */ 208 209 extern rtx nds32_legitimize_ict_address (rtx); 210 211 /* Auxiliary functions to identify indirect-call symbol. */ 212 213 extern bool nds32_indirect_call_referenced_p (rtx); 214 215 /* Auxiliary functions to identify long-call symbol. */ 216 extern bool nds32_long_call_p (rtx); 217 218 /* Auxiliary functions to identify SYMBOL_REF and LABEL_REF pattern. */ 219 220 extern bool symbolic_reference_mentioned_p (rtx); 221 222 /* Auxiliary functions to identify conditional move comparison operand. */ 223 224 extern int nds32_cond_move_p (rtx); 225 226 /* Auxiliary functions to identify 16 bit addresing mode. */ 227 228 extern enum nds32_16bit_address_type nds32_mem_format (rtx); 229 230 /* Auxiliary functions to identify floating-point addresing mode. */ 231 232 extern bool nds32_float_mem_operand_p (rtx); 233 234 /* Auxiliary functions to output assembly code. */ 235 236 extern const char *nds32_output_16bit_store (rtx *, int); 237 extern const char *nds32_output_16bit_load (rtx *, int); 238 extern const char *nds32_output_32bit_store (rtx *, int); 239 extern const char *nds32_output_32bit_load (rtx *, int); 240 extern const char *nds32_output_32bit_load_s (rtx *, int); 241 extern const char *nds32_output_float_load(rtx *); 242 extern const char *nds32_output_float_store(rtx *); 243 extern const char *nds32_output_smw_single_word (rtx *); 244 extern const char *nds32_output_smw_double_word (rtx *); 245 extern const char *nds32_output_lmw_single_word (rtx *); 246 extern const char *nds32_output_double (rtx *, bool); 247 extern const char *nds32_output_cbranchsi4_equality_zero (rtx_insn *, rtx *); 248 extern const char *nds32_output_cbranchsi4_equality_reg (rtx_insn *, rtx *); 249 extern const char *nds32_output_cbranchsi4_equality_reg_or_const_int (rtx_insn *, 250 rtx *); 251 extern const char *nds32_output_cbranchsi4_greater_less_zero (rtx_insn *, rtx *); 252 253 extern const char *nds32_output_unpkd8 (rtx, rtx, rtx, rtx, bool); 254 255 extern const char *nds32_output_call (rtx, rtx *, rtx, 256 const char *, const char *, bool); 257 extern const char *nds32_output_tls_desc (rtx *); 258 extern const char *nds32_output_tls_ie (rtx *); 259 extern const char *nds32_output_symrel (rtx *); 260 261 /* Auxiliary functions to output stack push/pop instruction. */ 262 263 extern const char *nds32_output_stack_push (rtx); 264 extern const char *nds32_output_stack_pop (rtx); 265 extern const char *nds32_output_return (void); 266 267 268 /* Auxiliary functions to split/output sms pattern. */ 269 extern bool nds32_need_split_sms_p (rtx, rtx, rtx, rtx); 270 extern const char *nds32_output_sms (rtx, rtx, rtx, rtx); 271 extern void nds32_split_sms (rtx, rtx, rtx, rtx, rtx, rtx, rtx); 272 273 /* Auxiliary functions to split double word RTX pattern. */ 274 275 extern void nds32_spilt_doubleword (rtx *, bool); 276 extern void nds32_split_ashiftdi3 (rtx, rtx, rtx); 277 extern void nds32_split_ashiftrtdi3 (rtx, rtx, rtx); 278 extern void nds32_split_lshiftrtdi3 (rtx, rtx, rtx); 279 extern void nds32_split_rotatertdi3 (rtx, rtx, rtx); 280 281 /* Auxiliary functions to split large constant RTX pattern. */ 282 283 extern void nds32_expand_constant (machine_mode, 284 HOST_WIDE_INT, rtx, rtx); 285 286 /* Auxiliary functions to check using return with null epilogue. */ 287 288 extern int nds32_can_use_return_insn (void); 289 extern scalar_int_mode nds32_case_vector_shorten_mode (int, int, rtx); 290 291 /* Auxiliary functions to decide output alignment or not. */ 292 293 extern int nds32_target_alignment (rtx_insn *); 294 extern unsigned int nds32_data_alignment (tree, unsigned int); 295 extern unsigned int nds32_local_alignment (tree, unsigned int); 296 297 /* Auxiliary functions to expand builtin functions. */ 298 299 extern void nds32_init_builtins_impl (void); 300 extern rtx nds32_expand_builtin_impl (tree, rtx, rtx, 301 machine_mode, int); 302 extern tree nds32_builtin_decl_impl (unsigned, bool); 303 304 /* Auxiliary functions for ISR implementation. */ 305 306 extern void nds32_check_isr_attrs_conflict (tree, tree); 307 extern void nds32_construct_isr_vectors_information (tree, const char *); 308 extern void nds32_asm_file_start_for_isr (void); 309 extern void nds32_asm_file_end_for_isr (void); 310 extern bool nds32_isr_function_p (tree); 311 extern bool nds32_isr_function_critical_p (tree); 312 313 /* Auxiliary functions for cost calculation. */ 314 315 extern void nds32_init_rtx_costs (void); 316 extern bool nds32_rtx_costs_impl (rtx, machine_mode, int, int, int *, bool); 317 extern int nds32_address_cost_impl (rtx, machine_mode, addr_space_t, bool); 318 319 /* Auxiliary functions for pre-define marco. */ 320 extern void nds32_cpu_cpp_builtins(struct cpp_reader *); 321 322 /* Auxiliary functions for const_vector's constraints. */ 323 324 extern HOST_WIDE_INT const_vector_to_hwint (rtx); 325 extern bool nds32_valid_CVp5_p (rtx); 326 extern bool nds32_valid_CVs5_p (rtx); 327 extern bool nds32_valid_CVs2_p (rtx); 328 extern bool nds32_valid_CVhi_p (rtx); 329 330 /* Auxiliary functions for lwm/smw. */ 331 332 extern bool nds32_valid_smw_lwm_base_p (rtx); 333 334 extern bool nds32_split_double_word_load_store_p (rtx *,bool); 335 336 namespace nds32 { 337 338 extern rtx extract_pattern_from_insn (rtx); 339 340 size_t parallel_elements (rtx); 341 rtx parallel_element (rtx, int); 342 bool load_single_p (rtx_insn *); 343 bool store_single_p (rtx_insn *); 344 bool load_double_p (rtx_insn *); 345 bool store_double_p (rtx_insn *); 346 bool store_offset_reg_p (rtx_insn *); 347 bool post_update_insn_p (rtx_insn *); 348 bool immed_offset_p (rtx); 349 int find_post_update_rtx (rtx_insn *); 350 rtx extract_mem_rtx (rtx_insn *); 351 rtx extract_base_reg (rtx_insn *); 352 rtx extract_offset_rtx (rtx_insn *); 353 354 rtx extract_shift_reg (rtx); 355 356 bool movd44_insn_p (rtx_insn *); 357 rtx extract_movd44_odd_reg (rtx_insn *); 358 359 rtx extract_mac_non_acc_rtx (rtx_insn *); 360 361 bool divmod_p (rtx_insn *); 362 363 rtx extract_branch_target_rtx (rtx_insn *); 364 rtx extract_branch_condition_rtx (rtx_insn *); 365 } // namespace nds32 366 367 extern bool nds32_use_load_post_increment(machine_mode); 368 369 /* Functions for create nds32 specific optimization pass. */ 370 extern rtl_opt_pass *make_pass_nds32_relax_opt (gcc::context *); 371 extern rtl_opt_pass *make_pass_nds32_fp_as_gp (gcc::context *); 372 373 extern int nds32_alloc_relax_group_id (); 374 375 /* ------------------------------------------------------------------------ */ 376