1 /* Prototypes for exported functions defined in arm.c and pe.c 2 Copyright (C) 1999-2021 Free Software Foundation, Inc. 3 Contributed by Richard Earnshaw (rearnsha@arm.com) 4 Minor hacks by Nick Clifton (nickc@cygnus.com) 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_ARM_PROTOS_H 23 #define GCC_ARM_PROTOS_H 24 25 #include "sbitmap.h" 26 27 extern enum unwind_info_type arm_except_unwind_info (struct gcc_options *); 28 extern int use_return_insn (int, rtx); 29 extern bool use_simple_return_p (void); 30 extern enum reg_class arm_regno_class (int); 31 extern bool arm_check_builtin_call (location_t , vec<location_t> , tree, 32 tree, unsigned int, tree *); 33 extern void arm_load_pic_register (unsigned long, rtx); 34 extern int arm_volatile_func (void); 35 extern void arm_expand_prologue (void); 36 extern void arm_expand_epilogue (bool); 37 extern void arm_declare_function_name (FILE *, const char *, tree); 38 extern void arm_asm_declare_function_name (FILE *, const char *, tree); 39 extern void thumb2_expand_return (bool); 40 extern const char *arm_strip_name_encoding (const char *); 41 extern void arm_asm_output_labelref (FILE *, const char *); 42 extern void thumb2_asm_output_opcode (FILE *); 43 extern unsigned long arm_current_func_type (void); 44 extern HOST_WIDE_INT arm_compute_initial_elimination_offset (unsigned int, 45 unsigned int); 46 extern HOST_WIDE_INT thumb_compute_initial_elimination_offset (unsigned int, 47 unsigned int); 48 extern unsigned int arm_dbx_register_number (unsigned int); 49 extern void arm_output_fn_unwind (FILE *, bool); 50 51 extern rtx arm_expand_builtin (tree exp, rtx target, rtx subtarget 52 ATTRIBUTE_UNUSED, machine_mode mode 53 ATTRIBUTE_UNUSED, int ignore ATTRIBUTE_UNUSED); 54 extern tree arm_builtin_decl (unsigned code, bool initialize_p 55 ATTRIBUTE_UNUSED); 56 extern void arm_init_builtins (void); 57 extern void arm_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update); 58 extern rtx arm_simd_vect_par_cnst_half (machine_mode mode, bool high); 59 extern bool arm_simd_check_vect_par_cnst_half_p (rtx op, machine_mode mode, 60 bool high); 61 extern void arm_emit_speculation_barrier_function (void); 62 extern void arm_decompose_di_binop (rtx, rtx, rtx *, rtx *, rtx *, rtx *); 63 extern bool arm_q_bit_access (void); 64 extern bool arm_ge_bits_access (void); 65 extern bool arm_target_insn_ok_for_lob (rtx); 66 67 #ifdef RTX_CODE 68 enum reg_class 69 arm_mode_base_reg_class (machine_mode); 70 extern void arm_gen_unlikely_cbranch (enum rtx_code, machine_mode cc_mode, 71 rtx label_ref); 72 extern bool arm_vector_mode_supported_p (machine_mode); 73 extern bool arm_small_register_classes_for_mode_p (machine_mode); 74 extern int const_ok_for_arm (HOST_WIDE_INT); 75 extern int const_ok_for_op (HOST_WIDE_INT, enum rtx_code); 76 extern int const_ok_for_dimode_op (HOST_WIDE_INT, enum rtx_code); 77 extern void thumb1_gen_const_int_rtl (rtx, HOST_WIDE_INT); 78 extern void thumb1_gen_const_int_print (rtx, HOST_WIDE_INT); 79 extern int arm_split_constant (RTX_CODE, machine_mode, rtx, 80 HOST_WIDE_INT, rtx, rtx, int); 81 extern int legitimate_pic_operand_p (rtx); 82 extern rtx legitimize_pic_address (rtx, machine_mode, rtx, rtx, bool); 83 extern rtx legitimize_tls_address (rtx, rtx); 84 extern bool arm_legitimate_address_p (machine_mode, rtx, bool); 85 extern int arm_legitimate_address_outer_p (machine_mode, rtx, RTX_CODE, int); 86 extern int thumb_legitimate_offset_p (machine_mode, HOST_WIDE_INT); 87 extern int thumb1_legitimate_address_p (machine_mode, rtx, int); 88 extern bool ldm_stm_operation_p (rtx, bool, machine_mode mode, 89 bool, bool); 90 extern bool clear_operation_p (rtx, bool); 91 extern int arm_const_double_rtx (rtx); 92 extern int vfp3_const_double_rtx (rtx); 93 extern int simd_immediate_valid_for_move (rtx, machine_mode, rtx *, int *); 94 extern int neon_immediate_valid_for_logic (rtx, machine_mode, int, rtx *, 95 int *); 96 extern int neon_immediate_valid_for_shift (rtx, machine_mode, rtx *, 97 int *, bool); 98 extern char *neon_output_logic_immediate (const char *, rtx *, 99 machine_mode, int, int); 100 extern char *neon_output_shift_immediate (const char *, char, rtx *, 101 machine_mode, int, bool); 102 extern void neon_pairwise_reduce (rtx, rtx, machine_mode, 103 rtx (*) (rtx, rtx, rtx)); 104 extern rtx neon_make_constant (rtx, bool generate = true); 105 extern tree arm_builtin_vectorized_function (unsigned int, tree, tree); 106 extern void neon_expand_vector_init (rtx, rtx); 107 extern void neon_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT, const_tree); 108 extern void arm_const_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT); 109 extern HOST_WIDE_INT neon_element_bits (machine_mode); 110 extern void neon_emit_pair_result_insn (machine_mode, 111 rtx (*) (rtx, rtx, rtx, rtx), 112 rtx, rtx, rtx); 113 extern void neon_disambiguate_copy (rtx *, rtx *, rtx *, unsigned int); 114 extern void neon_split_vcombine (rtx op[3]); 115 extern enum reg_class coproc_secondary_reload_class (machine_mode, rtx, 116 bool); 117 extern bool arm_tls_referenced_p (rtx); 118 119 extern int arm_coproc_mem_operand (rtx, bool); 120 extern int arm_coproc_mem_operand_no_writeback (rtx); 121 extern int arm_coproc_mem_operand_wb (rtx, int); 122 extern int neon_vector_mem_operand (rtx, int, bool); 123 extern int mve_vector_mem_operand (machine_mode, rtx, bool); 124 extern int neon_struct_mem_operand (rtx); 125 126 extern rtx *neon_vcmla_lane_prepare_operands (rtx *); 127 128 extern int tls_mentioned_p (rtx); 129 extern int symbol_mentioned_p (rtx); 130 extern int label_mentioned_p (rtx); 131 extern RTX_CODE minmax_code (rtx); 132 extern bool arm_sat_operator_match (rtx, rtx, int *, bool *); 133 extern int adjacent_mem_locations (rtx, rtx); 134 extern bool gen_ldm_seq (rtx *, int, bool); 135 extern bool gen_stm_seq (rtx *, int); 136 extern bool gen_const_stm_seq (rtx *, int); 137 extern rtx arm_gen_load_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *); 138 extern rtx arm_gen_store_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *); 139 extern bool offset_ok_for_ldrd_strd (HOST_WIDE_INT); 140 extern bool operands_ok_ldrd_strd (rtx, rtx, rtx, HOST_WIDE_INT, bool, bool); 141 extern bool gen_operands_ldrd_strd (rtx *, bool, bool, bool); 142 extern bool valid_operands_ldrd_strd (rtx *, bool); 143 extern int arm_gen_cpymemqi (rtx *); 144 extern bool gen_cpymem_ldrd_strd (rtx *); 145 extern machine_mode arm_select_cc_mode (RTX_CODE, rtx, rtx); 146 extern machine_mode arm_select_dominance_cc_mode (rtx, rtx, 147 HOST_WIDE_INT); 148 extern rtx arm_gen_compare_reg (RTX_CODE, rtx, rtx, rtx); 149 extern rtx arm_gen_return_addr_mask (void); 150 extern void arm_reload_in_hi (rtx *); 151 extern void arm_reload_out_hi (rtx *); 152 extern int arm_max_const_double_inline_cost (void); 153 extern int arm_const_double_inline_cost (rtx); 154 extern bool arm_const_double_by_parts (rtx); 155 extern bool arm_const_double_by_immediates (rtx); 156 extern rtx arm_load_function_descriptor (rtx funcdesc); 157 extern void arm_emit_call_insn (rtx, rtx, bool); 158 bool detect_cmse_nonsecure_call (tree); 159 extern const char *output_call (rtx *); 160 void arm_emit_movpair (rtx, rtx); 161 extern const char *output_mov_long_double_arm_from_arm (rtx *); 162 extern const char *output_move_double (rtx *, bool, int *count); 163 extern const char *output_move_quad (rtx *); 164 extern int arm_count_output_move_double_insns (rtx *); 165 extern int arm_count_ldrdstrd_insns (rtx *, bool); 166 extern const char *output_move_vfp (rtx *operands); 167 extern const char *output_move_neon (rtx *operands); 168 extern int arm_attr_length_move_neon (rtx_insn *); 169 extern int arm_address_offset_is_imm (rtx_insn *); 170 extern const char *output_add_immediate (rtx *); 171 extern const char *arithmetic_instr (rtx, int); 172 extern void output_ascii_pseudo_op (FILE *, const unsigned char *, int); 173 extern const char *output_return_instruction (rtx, bool, bool, bool); 174 extern const char *output_probe_stack_range (rtx, rtx); 175 extern void arm_poke_function_name (FILE *, const char *); 176 extern void arm_final_prescan_insn (rtx_insn *); 177 extern int arm_debugger_arg_offset (int, rtx); 178 extern bool arm_is_long_call_p (tree); 179 extern int arm_emit_vector_const (FILE *, rtx); 180 extern void arm_emit_fp16_const (rtx c); 181 extern const char * arm_output_load_gr (rtx *); 182 extern const char *vfp_output_vstmd (rtx *); 183 extern void arm_output_multireg_pop (rtx *, bool, rtx, bool, bool); 184 extern void arm_set_return_address (rtx, rtx); 185 extern int arm_eliminable_register (rtx); 186 extern const char *arm_output_shift(rtx *, int); 187 extern const char *arm_output_iwmmxt_shift_immediate (const char *, rtx *, bool); 188 extern const char *arm_output_iwmmxt_tinsr (rtx *); 189 extern unsigned int arm_sync_loop_insns (rtx , rtx *); 190 extern int arm_attr_length_push_multi(rtx, rtx); 191 extern int arm_attr_length_pop_multi(rtx *, bool, bool); 192 extern void arm_expand_compare_and_swap (rtx op[]); 193 extern void arm_split_compare_and_swap (rtx op[]); 194 extern void arm_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx); 195 extern rtx arm_load_tp (rtx); 196 extern bool arm_coproc_builtin_available (enum unspecv); 197 extern bool arm_coproc_ldc_stc_legitimate_address (rtx); 198 199 #if defined TREE_CODE 200 extern void arm_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree); 201 extern bool arm_pad_reg_upward (machine_mode, tree, int); 202 #endif 203 extern int arm_apply_result_size (void); 204 205 #endif /* RTX_CODE */ 206 207 /* Thumb functions. */ 208 extern void arm_init_expanders (void); 209 extern const char *thumb1_unexpanded_epilogue (void); 210 extern void thumb1_expand_prologue (void); 211 extern void thumb1_expand_epilogue (void); 212 extern const char *thumb1_output_interwork (void); 213 extern int thumb_shiftable_const (unsigned HOST_WIDE_INT); 214 #ifdef RTX_CODE 215 extern enum arm_cond_code maybe_get_arm_condition_code (rtx); 216 extern void thumb1_final_prescan_insn (rtx_insn *); 217 extern void thumb2_final_prescan_insn (rtx_insn *); 218 extern const char *thumb_load_double_from_address (rtx *); 219 extern const char *thumb_output_move_mem_multiple (int, rtx *); 220 extern const char *thumb_call_via_reg (rtx); 221 extern void thumb_expand_cpymemqi (rtx *); 222 extern rtx arm_return_addr (int, rtx); 223 extern void thumb_reload_out_hi (rtx *); 224 extern void thumb_set_return_address (rtx, rtx); 225 extern const char *thumb1_output_casesi (rtx *); 226 extern const char *thumb2_output_casesi (rtx *); 227 #endif 228 229 /* Defined in pe.c. */ 230 extern int arm_dllexport_name_p (const char *); 231 extern int arm_dllimport_name_p (const char *); 232 233 #ifdef TREE_CODE 234 extern void arm_pe_unique_section (tree, int); 235 extern void arm_pe_encode_section_info (tree, rtx, int); 236 extern int arm_dllexport_p (tree); 237 extern int arm_dllimport_p (tree); 238 extern void arm_mark_dllexport (tree); 239 extern void arm_mark_dllimport (tree); 240 extern bool arm_change_mode_p (tree); 241 #endif 242 243 extern tree arm_valid_target_attribute_tree (tree, struct gcc_options *, 244 struct gcc_options *); 245 extern void arm_configure_build_target (struct arm_build_target *, 246 struct cl_target_option *, bool); 247 extern void arm_option_reconfigure_globals (void); 248 extern void arm_options_perform_arch_sanity_checks (void); 249 extern void arm_pr_long_calls (struct cpp_reader *); 250 extern void arm_pr_no_long_calls (struct cpp_reader *); 251 extern void arm_pr_long_calls_off (struct cpp_reader *); 252 253 extern const char *arm_mangle_type (const_tree); 254 extern const char *arm_mangle_builtin_type (const_tree); 255 256 extern void arm_order_regs_for_local_alloc (void); 257 258 extern int arm_max_conditional_execute (); 259 260 /* Vectorizer cost model implementation. */ 261 struct cpu_vec_costs { 262 const int scalar_stmt_cost; /* Cost of any scalar operation, excluding 263 load and store. */ 264 const int scalar_load_cost; /* Cost of scalar load. */ 265 const int scalar_store_cost; /* Cost of scalar store. */ 266 const int vec_stmt_cost; /* Cost of any vector operation, excluding 267 load, store, vector-to-scalar and 268 scalar-to-vector operation. */ 269 const int vec_to_scalar_cost; /* Cost of vect-to-scalar operation. */ 270 const int scalar_to_vec_cost; /* Cost of scalar-to-vector operation. */ 271 const int vec_align_load_cost; /* Cost of aligned vector load. */ 272 const int vec_unalign_load_cost; /* Cost of unaligned vector load. */ 273 const int vec_unalign_store_cost; /* Cost of unaligned vector load. */ 274 const int vec_store_cost; /* Cost of vector store. */ 275 const int cond_taken_branch_cost; /* Cost of taken branch for vectorizer 276 cost model. */ 277 const int cond_not_taken_branch_cost;/* Cost of not taken branch for 278 vectorizer cost model. */ 279 }; 280 281 #ifdef RTX_CODE 282 /* This needs to be here because we need RTX_CODE and similar. */ 283 284 struct cpu_cost_table; 285 286 /* Addressing mode operations. Used to index tables in struct 287 addr_mode_cost_table. */ 288 enum arm_addr_mode_op 289 { 290 AMO_DEFAULT, 291 AMO_NO_WB, /* Offset with no writeback. */ 292 AMO_WB, /* Offset with writeback. */ 293 AMO_MAX /* For array size. */ 294 }; 295 296 /* Table of additional costs in units of COSTS_N_INSNS() when using 297 addressing modes for each access type. */ 298 struct addr_mode_cost_table 299 { 300 const int integer[AMO_MAX]; 301 const int fp[AMO_MAX]; 302 const int vector[AMO_MAX]; 303 }; 304 305 /* Dump function ARM_PRINT_TUNE_INFO should be updated whenever this 306 structure is modified. */ 307 308 struct tune_params 309 { 310 const struct cpu_cost_table *insn_extra_cost; 311 const struct addr_mode_cost_table *addr_mode_costs; 312 bool (*sched_adjust_cost) (rtx_insn *, int, rtx_insn *, int *); 313 int (*branch_cost) (bool, bool); 314 /* Vectorizer costs. */ 315 const struct cpu_vec_costs* vec_costs; 316 int constant_limit; 317 /* Maximum number of instructions to conditionalise. */ 318 int max_insns_skipped; 319 /* Maximum number of instructions to inline calls to memset. */ 320 int max_insns_inline_memset; 321 /* Issue rate of the processor. */ 322 unsigned int issue_rate; 323 /* Explicit prefetch data. */ 324 struct 325 { 326 int num_slots; 327 int l1_cache_size; 328 int l1_cache_line_size; 329 } prefetch; 330 enum {PREF_CONST_POOL_FALSE, PREF_CONST_POOL_TRUE} 331 prefer_constant_pool: 1; 332 /* Prefer STRD/LDRD instructions over PUSH/POP/LDM/STM. */ 333 enum {PREF_LDRD_FALSE, PREF_LDRD_TRUE} prefer_ldrd_strd: 1; 334 /* The preference for non short cirtcuit operation when optimizing for 335 performance. The first element covers Thumb state and the second one 336 is for ARM state. */ 337 enum log_op_non_short_circuit {LOG_OP_NON_SHORT_CIRCUIT_FALSE, 338 LOG_OP_NON_SHORT_CIRCUIT_TRUE}; 339 log_op_non_short_circuit logical_op_non_short_circuit_thumb: 1; 340 log_op_non_short_circuit logical_op_non_short_circuit_arm: 1; 341 /* Prefer 32-bit encoding instead of flag-setting 16-bit encoding. */ 342 enum {DISPARAGE_FLAGS_NEITHER, DISPARAGE_FLAGS_PARTIAL, DISPARAGE_FLAGS_ALL} 343 disparage_flag_setting_t16_encodings: 2; 344 /* Prefer to inline string operations like memset by using Neon. */ 345 enum {PREF_NEON_STRINGOPS_FALSE, PREF_NEON_STRINGOPS_TRUE} 346 string_ops_prefer_neon: 1; 347 /* Bitfield encoding the fusible pairs of instructions. Use FUSE_OPS 348 in an initializer if multiple fusion operations are supported on a 349 target. */ 350 enum fuse_ops 351 { 352 FUSE_NOTHING = 0, 353 FUSE_MOVW_MOVT = 1 << 0, 354 FUSE_AES_AESMC = 1 << 1 355 } fusible_ops: 2; 356 /* Depth of scheduling queue to check for L2 autoprefetcher. */ 357 enum {SCHED_AUTOPREF_OFF, SCHED_AUTOPREF_RANK, SCHED_AUTOPREF_FULL} 358 sched_autopref: 2; 359 }; 360 361 /* Smash multiple fusion operations into a type that can be used for an 362 initializer. */ 363 #define FUSE_OPS(x) ((tune_params::fuse_ops) (x)) 364 365 extern const struct tune_params *current_tune; 366 extern int vfp3_const_double_for_fract_bits (rtx); 367 /* return power of two from operand, otherwise 0. */ 368 extern int vfp3_const_double_for_bits (rtx); 369 370 extern void arm_emit_coreregs_64bit_shift (enum rtx_code, rtx, rtx, rtx, rtx, 371 rtx); 372 extern bool arm_fusion_enabled_p (tune_params::fuse_ops); 373 extern bool arm_valid_symbolic_address_p (rtx); 374 extern bool arm_validize_comparison (rtx *, rtx *, rtx *); 375 extern bool arm_expand_vector_compare (rtx, rtx_code, rtx, rtx, bool); 376 #endif /* RTX_CODE */ 377 378 extern bool arm_gen_setmem (rtx *); 379 extern void arm_expand_vcond (rtx *, machine_mode); 380 extern void arm_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel); 381 382 extern bool arm_autoinc_modes_ok_p (machine_mode, enum arm_auto_incmodes); 383 384 extern void arm_emit_eabi_attribute (const char *, int, int); 385 386 extern void arm_reset_previous_fndecl (void); 387 extern void save_restore_target_globals (tree); 388 389 /* Defined in gcc/common/config/arm-common.c. */ 390 extern const char *arm_rewrite_selected_cpu (const char *name); 391 392 /* Defined in gcc/common/config/arm-c.c. */ 393 extern void arm_lang_object_attributes_init (void); 394 extern void arm_register_target_pragmas (void); 395 extern void arm_cpu_cpp_builtins (struct cpp_reader *); 396 397 /* Defined in arm-d.c */ 398 extern void arm_d_target_versions (void); 399 extern void arm_d_register_target_info (void); 400 401 extern bool arm_is_constant_pool_ref (rtx); 402 403 /* The bits in this mask specify which instruction scheduling options should 404 be used. */ 405 extern unsigned int tune_flags; 406 407 /* Nonzero if this chip supports the ARM Architecture 4 extensions. */ 408 extern int arm_arch4; 409 410 /* Nonzero if this chip supports the ARM Architecture 4t extensions. */ 411 extern int arm_arch4t; 412 413 /* Nonzero if this chip supports the ARM Architecture 5t extensions. */ 414 extern int arm_arch5t; 415 416 /* Nonzero if this chip supports the ARM Architecture 5te extensions. */ 417 extern int arm_arch5te; 418 419 /* Nonzero if this chip supports the ARM Architecture 6 extensions. */ 420 extern int arm_arch6; 421 422 /* Nonzero if this chip supports the ARM 6K extensions. */ 423 extern int arm_arch6k; 424 425 /* Nonzero if this chip supports the ARM 6KZ extensions. */ 426 extern int arm_arch6kz; 427 428 /* Nonzero if instructions present in ARMv6-M can be used. */ 429 extern int arm_arch6m; 430 431 /* Nonzero if this chip supports the ARM 7 extensions. */ 432 extern int arm_arch7; 433 434 /* Nonzero if this chip supports the Large Physical Address Extension. */ 435 extern int arm_arch_lpae; 436 437 /* Nonzero if instructions not present in the 'M' profile can be used. */ 438 extern int arm_arch_notm; 439 440 /* Nonzero if instructions present in ARMv7E-M can be used. */ 441 extern int arm_arch7em; 442 443 /* Nonzero if instructions present in ARMv8 can be used. */ 444 extern int arm_arch8; 445 446 /* Nonzero if this chip can benefit from load scheduling. */ 447 extern int arm_ld_sched; 448 449 /* Nonzero if this chip is a StrongARM. */ 450 extern int arm_tune_strongarm; 451 452 /* Nonzero if this chip supports Intel Wireless MMX technology. */ 453 extern int arm_arch_iwmmxt; 454 455 /* Nonzero if this chip supports Intel Wireless MMX2 technology. */ 456 extern int arm_arch_iwmmxt2; 457 458 /* Nonzero if this chip is an XScale. */ 459 extern int arm_arch_xscale; 460 461 /* Nonzero if tuning for XScale */ 462 extern int arm_tune_xscale; 463 464 /* Nonzero if we want to tune for stores that access the write-buffer. 465 This typically means an ARM6 or ARM7 with MMU or MPU. */ 466 extern int arm_tune_wbuf; 467 468 /* Nonzero if tuning for Cortex-A9. */ 469 extern int arm_tune_cortex_a9; 470 471 /* Nonzero if we should define __THUMB_INTERWORK__ in the 472 preprocessor. 473 XXX This is a bit of a hack, it's intended to help work around 474 problems in GLD which doesn't understand that armv5t code is 475 interworking clean. */ 476 extern int arm_cpp_interwork; 477 478 /* Nonzero if chip supports Thumb 1. */ 479 extern int arm_arch_thumb1; 480 481 /* Nonzero if chip supports Thumb 2. */ 482 extern int arm_arch_thumb2; 483 484 /* Nonzero if chip supports integer division instruction. */ 485 extern int arm_arch_arm_hwdiv; 486 extern int arm_arch_thumb_hwdiv; 487 488 /* Nonzero if chip disallows volatile memory access in IT block. */ 489 extern int arm_arch_no_volatile_ce; 490 491 /* Structure defining the current overall architectural target and tuning. */ 492 struct arm_build_target 493 { 494 /* Name of the target CPU, if known, or NULL if the target CPU was not 495 specified by the user (and inferred from the -march option). */ 496 const char *core_name; 497 /* Name of the target ARCH. NULL if there is a selected CPU. */ 498 const char *arch_name; 499 /* Preprocessor substring (never NULL). */ 500 const char *arch_pp_name; 501 /* The base architecture value. */ 502 enum base_architecture base_arch; 503 /* The profile letter for the architecture, upper case by convention. */ 504 char profile; 505 /* Bitmap encapsulating the isa_bits for the target environment. */ 506 sbitmap isa; 507 /* Flags used for tuning. Long term, these move into tune_params. */ 508 unsigned int tune_flags; 509 /* Tables with more detailed tuning information. */ 510 const struct tune_params *tune; 511 /* CPU identifier for the tuning target. */ 512 enum processor_type tune_core; 513 }; 514 515 extern struct arm_build_target arm_active_target; 516 517 /* Table entry for a CPU alias. */ 518 struct cpu_alias 519 { 520 /* The alias name. */ 521 const char *const name; 522 /* True if the name should be displayed in help text listing cpu names. */ 523 bool visible; 524 }; 525 526 /* Table entry for an architectural feature extension. */ 527 struct cpu_arch_extension 528 { 529 /* Feature name. */ 530 const char *const name; 531 /* True if the option is negative (removes extensions). */ 532 bool remove; 533 /* True if the option is an alias for another option with identical effect; 534 the option will be ignored for canonicalization. */ 535 bool alias; 536 /* The modifier bits. */ 537 const enum isa_feature isa_bits[isa_num_bits]; 538 }; 539 540 /* Common elements of both CPU and architectural options. */ 541 struct cpu_arch_option 542 { 543 /* Name for this option. */ 544 const char *name; 545 /* List of feature extensions permitted. */ 546 const struct cpu_arch_extension *extensions; 547 /* Standard feature bits. */ 548 enum isa_feature isa_bits[isa_num_bits]; 549 }; 550 551 /* Table entry for an architecture entry. */ 552 struct arch_option 553 { 554 /* Common option fields. */ 555 cpu_arch_option common; 556 /* Short string for this architecture. */ 557 const char *arch; 558 /* Base architecture, from which this specific architecture is derived. */ 559 enum base_architecture base_arch; 560 /* The profile letter for the architecture, upper case by convention. */ 561 const char profile; 562 /* Default tune target (in the absence of any more specific data). */ 563 enum processor_type tune_id; 564 }; 565 566 /* Table entry for a CPU entry. */ 567 struct cpu_option 568 { 569 /* Common option fields. */ 570 cpu_arch_option common; 571 /* List of aliases for this CPU. */ 572 const struct cpu_alias *aliases; 573 /* Architecture upon which this CPU is based. */ 574 enum arch_type arch; 575 }; 576 577 extern const arch_option all_architectures[]; 578 extern const cpu_option all_cores[]; 579 580 const cpu_option *arm_parse_cpu_option_name (const cpu_option *, const char *, 581 const char *, bool = true); 582 const arch_option *arm_parse_arch_option_name (const arch_option *, 583 const char *, const char *, bool = true); 584 void arm_parse_option_features (sbitmap, const cpu_arch_option *, 585 const char *); 586 587 void arm_initialize_isa (sbitmap, const enum isa_feature *); 588 589 const char * arm_gen_far_branch (rtx *, int, const char * , const char *); 590 591 bool arm_mve_immediate_check(rtx, machine_mode, bool); 592 #endif /* ! GCC_ARM_PROTOS_H */ 593