gcc/config/arm/arm-protos.h

   1 /* Prototypes for exported functions defined in arm.c and pe.c
   2    Copyright (C) 1999-2017 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 void arm_load_pic_register (unsigned long);
  32 extern int arm_volatile_func (void);
  33 extern void arm_expand_prologue (void);
  34 extern void arm_expand_epilogue (bool);
  35 extern void arm_declare_function_name (FILE *, const char *, tree);
  36 extern void arm_asm_declare_function_name (FILE *, const char *, tree);
  37 extern void thumb2_expand_return (bool);
  38 extern const char *arm_strip_name_encoding (const char *);
  39 extern void arm_asm_output_labelref (FILE *, const char *);
  40 extern void thumb2_asm_output_opcode (FILE *);
  41 extern unsigned long arm_current_func_type (void);
  42 extern HOST_WIDE_INT arm_compute_initial_elimination_offset (unsigned int,
  43                                                              unsigned int);
  44 extern HOST_WIDE_INT thumb_compute_initial_elimination_offset (unsigned int,
  45                                                                unsigned int);
  46 extern unsigned int arm_dbx_register_number (unsigned int);
  47 extern void arm_output_fn_unwind (FILE *, bool);
  48
  49 extern rtx arm_expand_builtin (tree exp, rtx target, rtx subtarget
  50                                ATTRIBUTE_UNUSED, machine_mode mode
  51                                ATTRIBUTE_UNUSED, int ignore ATTRIBUTE_UNUSED);
  52 extern tree arm_builtin_decl (unsigned code, bool initialize_p
  53                               ATTRIBUTE_UNUSED);
  54 extern void arm_init_builtins (void);
  55 extern void arm_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update);
  56 extern rtx arm_simd_vect_par_cnst_half (machine_mode mode, bool high);
  57 extern bool arm_simd_check_vect_par_cnst_half_p (rtx op, machine_mode mode,
  58                                                  bool high);
  59 #ifdef RTX_CODE
  60 extern void arm_gen_unlikely_cbranch (enum rtx_code, machine_mode cc_mode,
  61                                       rtx label_ref);
  62 extern bool arm_vector_mode_supported_p (machine_mode);
  63 extern bool arm_small_register_classes_for_mode_p (machine_mode);
  64 extern int const_ok_for_arm (HOST_WIDE_INT);
  65 extern int const_ok_for_op (HOST_WIDE_INT, enum rtx_code);
  66 extern int const_ok_for_dimode_op (HOST_WIDE_INT, enum rtx_code);
  67 extern int arm_split_constant (RTX_CODE, machine_mode, rtx,
  68                                HOST_WIDE_INT, rtx, rtx, int);
  69 extern int legitimate_pic_operand_p (rtx);
  70 extern rtx legitimize_pic_address (rtx, machine_mode, rtx);
  71 extern rtx legitimize_tls_address (rtx, rtx);
  72 extern bool arm_legitimate_address_p (machine_mode, rtx, bool);
  73 extern int arm_legitimate_address_outer_p (machine_mode, rtx, RTX_CODE, int);
  74 extern int thumb_legitimate_offset_p (machine_mode, HOST_WIDE_INT);
  75 extern int thumb1_legitimate_address_p (machine_mode, rtx, int);
  76 extern bool ldm_stm_operation_p (rtx, bool, machine_mode mode,
  77                                  bool, bool);
  78 extern int arm_const_double_rtx (rtx);
  79 extern int vfp3_const_double_rtx (rtx);
  80 extern int neon_immediate_valid_for_move (rtx, machine_mode, rtx *, int *);
  81 extern int neon_immediate_valid_for_logic (rtx, machine_mode, int, rtx *,
  82                                            int *);
  83 extern int neon_immediate_valid_for_shift (rtx, machine_mode, rtx *,
  84                                            int *, bool);
  85 extern char *neon_output_logic_immediate (const char *, rtx *,
  86                                           machine_mode, int, int);
  87 extern char *neon_output_shift_immediate (const char *, char, rtx *,
  88                                           machine_mode, int, bool);
  89 extern void neon_pairwise_reduce (rtx, rtx, machine_mode,
  90                                   rtx (*) (rtx, rtx, rtx));
  91 extern rtx neon_make_constant (rtx);
  92 extern tree arm_builtin_vectorized_function (unsigned int, tree, tree);
  93 extern void neon_expand_vector_init (rtx, rtx);
  94 extern void neon_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT, const_tree);
  95 extern void arm_const_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
  96 extern HOST_WIDE_INT neon_element_bits (machine_mode);
  97 extern void neon_emit_pair_result_insn (machine_mode,
  98                                         rtx (*) (rtx, rtx, rtx, rtx),
  99                                         rtx, rtx, rtx);
 100 extern void neon_disambiguate_copy (rtx *, rtx *, rtx *, unsigned int);
 101 extern void neon_split_vcombine (rtx op[3]);
 102 extern enum reg_class coproc_secondary_reload_class (machine_mode, rtx,
 103                                                      bool);
 104 extern bool arm_tls_referenced_p (rtx);
 105
 106 extern int arm_coproc_mem_operand (rtx, bool);
 107 extern int neon_vector_mem_operand (rtx, int, bool);
 108 extern int neon_struct_mem_operand (rtx);
 109
 110 extern int tls_mentioned_p (rtx);
 111 extern int symbol_mentioned_p (rtx);
 112 extern int label_mentioned_p (rtx);
 113 extern RTX_CODE minmax_code (rtx);
 114 extern bool arm_sat_operator_match (rtx, rtx, int *, bool *);
 115 extern int adjacent_mem_locations (rtx, rtx);
 116 extern bool gen_ldm_seq (rtx *, int, bool);
 117 extern bool gen_stm_seq (rtx *, int);
 118 extern bool gen_const_stm_seq (rtx *, int);
 119 extern rtx arm_gen_load_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 120 extern rtx arm_gen_store_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 121 extern bool offset_ok_for_ldrd_strd (HOST_WIDE_INT);
 122 extern bool operands_ok_ldrd_strd (rtx, rtx, rtx, HOST_WIDE_INT, bool, bool);
 123 extern bool gen_operands_ldrd_strd (rtx *, bool, bool, bool);
 124 extern int arm_gen_movmemqi (rtx *);
 125 extern bool gen_movmem_ldrd_strd (rtx *);
 126 extern machine_mode arm_select_cc_mode (RTX_CODE, rtx, rtx);
 127 extern machine_mode arm_select_dominance_cc_mode (rtx, rtx,
 128                                                        HOST_WIDE_INT);
 129 extern rtx arm_gen_compare_reg (RTX_CODE, rtx, rtx, rtx);
 130 extern rtx arm_gen_return_addr_mask (void);
 131 extern void arm_reload_in_hi (rtx *);
 132 extern void arm_reload_out_hi (rtx *);
 133 extern int arm_max_const_double_inline_cost (void);
 134 extern int arm_const_double_inline_cost (rtx);
 135 extern bool arm_const_double_by_parts (rtx);
 136 extern bool arm_const_double_by_immediates (rtx);
 137 extern void arm_emit_call_insn (rtx, rtx, bool);
 138 bool detect_cmse_nonsecure_call (tree);
 139 extern const char *output_call (rtx *);
 140 void arm_emit_movpair (rtx, rtx);
 141 extern const char *output_mov_long_double_arm_from_arm (rtx *);
 142 extern const char *output_move_double (rtx *, bool, int *count);
 143 extern const char *output_move_quad (rtx *);
 144 extern int arm_count_output_move_double_insns (rtx *);
 145 extern const char *output_move_vfp (rtx *operands);
 146 extern const char *output_move_neon (rtx *operands);
 147 extern int arm_attr_length_move_neon (rtx_insn *);
 148 extern int arm_address_offset_is_imm (rtx_insn *);
 149 extern const char *output_add_immediate (rtx *);
 150 extern const char *arithmetic_instr (rtx, int);
 151 extern void output_ascii_pseudo_op (FILE *, const unsigned char *, int);
 152 extern const char *output_return_instruction (rtx, bool, bool, bool);
 153 extern const char *output_probe_stack_range (rtx, rtx);
 154 extern void arm_poke_function_name (FILE *, const char *);
 155 extern void arm_final_prescan_insn (rtx_insn *);
 156 extern int arm_debugger_arg_offset (int, rtx);
 157 extern bool arm_is_long_call_p (tree);
 158 extern int    arm_emit_vector_const (FILE *, rtx);
 159 extern void arm_emit_fp16_const (rtx c);
 160 extern const char * arm_output_load_gr (rtx *);
 161 extern const char *vfp_output_vstmd (rtx *);
 162 extern void arm_output_multireg_pop (rtx *, bool, rtx, bool, bool);
 163 extern void arm_set_return_address (rtx, rtx);
 164 extern int arm_eliminable_register (rtx);
 165 extern const char *arm_output_shift(rtx *, int);
 166 extern const char *arm_output_iwmmxt_shift_immediate (const char *, rtx *, bool);
 167 extern const char *arm_output_iwmmxt_tinsr (rtx *);
 168 extern unsigned int arm_sync_loop_insns (rtx , rtx *);
 169 extern int arm_attr_length_push_multi(rtx, rtx);
 170 extern int arm_attr_length_pop_multi(rtx *, bool, bool);
 171 extern void arm_expand_compare_and_swap (rtx op[]);
 172 extern void arm_split_compare_and_swap (rtx op[]);
 173 extern void arm_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx);
 174 extern rtx arm_load_tp (rtx);
 175 extern bool arm_coproc_builtin_available (enum unspecv);
 176 extern bool arm_coproc_ldc_stc_legitimate_address (rtx);
 177
 178 #if defined TREE_CODE
 179 extern void arm_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree);
 180 extern bool arm_pad_reg_upward (machine_mode, tree, int);
 181 #endif
 182 extern int arm_apply_result_size (void);
 183
 184 #endif /* RTX_CODE */
 185
 186 /* Thumb functions.  */
 187 extern void arm_init_expanders (void);
 188 extern const char *thumb1_unexpanded_epilogue (void);
 189 extern void thumb1_expand_prologue (void);
 190 extern void thumb1_expand_epilogue (void);
 191 extern const char *thumb1_output_interwork (void);
 192 extern int thumb_shiftable_const (unsigned HOST_WIDE_INT);
 193 #ifdef RTX_CODE
 194 extern enum arm_cond_code maybe_get_arm_condition_code (rtx);
 195 extern void thumb1_final_prescan_insn (rtx_insn *);
 196 extern void thumb2_final_prescan_insn (rtx_insn *);
 197 extern const char *thumb_load_double_from_address (rtx *);
 198 extern const char *thumb_output_move_mem_multiple (int, rtx *);
 199 extern const char *thumb_call_via_reg (rtx);
 200 extern void thumb_expand_movmemqi (rtx *);
 201 extern rtx arm_return_addr (int, rtx);
 202 extern void thumb_reload_out_hi (rtx *);
 203 extern void thumb_set_return_address (rtx, rtx);
 204 extern const char *thumb1_output_casesi (rtx *);
 205 extern const char *thumb2_output_casesi (rtx *);
 206 #endif
 207
 208 /* Defined in pe.c.  */
 209 extern int arm_dllexport_name_p (const char *);
 210 extern int arm_dllimport_name_p (const char *);
 211
 212 #ifdef TREE_CODE
 213 extern void arm_pe_unique_section (tree, int);
 214 extern void arm_pe_encode_section_info (tree, rtx, int);
 215 extern int arm_dllexport_p (tree);
 216 extern int arm_dllimport_p (tree);
 217 extern void arm_mark_dllexport (tree);
 218 extern void arm_mark_dllimport (tree);
 219 extern bool arm_change_mode_p (tree);
 220 #endif
 221
 222 extern tree arm_valid_target_attribute_tree (tree, struct gcc_options *,
 223                                              struct gcc_options *);
 224 extern void arm_configure_build_target (struct arm_build_target *,
 225                                         struct cl_target_option *,
 226                                         struct gcc_options *, bool);
 227 extern void arm_pr_long_calls (struct cpp_reader *);
 228 extern void arm_pr_no_long_calls (struct cpp_reader *);
 229 extern void arm_pr_long_calls_off (struct cpp_reader *);
 230
 231 extern const char *arm_mangle_type (const_tree);
 232 extern const char *arm_mangle_builtin_type (const_tree);
 233
 234 extern void arm_order_regs_for_local_alloc (void);
 235
 236 extern int arm_max_conditional_execute ();
 237
 238 /* Vectorizer cost model implementation.  */
 239 struct cpu_vec_costs {
 240   const int scalar_stmt_cost;   /* Cost of any scalar operation, excluding
 241                                    load and store.  */
 242   const int scalar_load_cost;   /* Cost of scalar load.  */
 243   const int scalar_store_cost;  /* Cost of scalar store.  */
 244   const int vec_stmt_cost;      /* Cost of any vector operation, excluding
 245                                    load, store, vector-to-scalar and
 246                                    scalar-to-vector operation.  */
 247   const int vec_to_scalar_cost;    /* Cost of vect-to-scalar operation.  */
 248   const int scalar_to_vec_cost;    /* Cost of scalar-to-vector operation.  */
 249   const int vec_align_load_cost;   /* Cost of aligned vector load.  */
 250   const int vec_unalign_load_cost; /* Cost of unaligned vector load.  */
 251   const int vec_unalign_store_cost; /* Cost of unaligned vector load.  */
 252   const int vec_store_cost;        /* Cost of vector store.  */
 253   const int cond_taken_branch_cost;    /* Cost of taken branch for vectorizer
 254                                           cost model.  */
 255   const int cond_not_taken_branch_cost;/* Cost of not taken branch for
 256                                           vectorizer cost model.  */
 257 };
 258
 259 #ifdef RTX_CODE
 260 /* This needs to be here because we need RTX_CODE and similar.  */
 261
 262 struct cpu_cost_table;
 263
 264 /* Dump function ARM_PRINT_TUNE_INFO should be updated whenever this
 265    structure is modified.  */
 266
 267 struct tune_params
 268 {
 269   const struct cpu_cost_table *insn_extra_cost;
 270   bool (*sched_adjust_cost) (rtx_insn *, int, rtx_insn *, int *);
 271   int (*branch_cost) (bool, bool);
 272   /* Vectorizer costs.  */
 273   const struct cpu_vec_costs* vec_costs;
 274   int constant_limit;
 275   /* Maximum number of instructions to conditionalise.  */
 276   int max_insns_skipped;
 277   /* Maximum number of instructions to inline calls to memset.  */
 278   int max_insns_inline_memset;
 279   /* Issue rate of the processor.  */
 280   unsigned int issue_rate;
 281   /* Explicit prefetch data.  */
 282   struct
 283     {
 284       int num_slots;
 285       int l1_cache_size;
 286       int l1_cache_line_size;
 287     } prefetch;
 288   enum {PREF_CONST_POOL_FALSE, PREF_CONST_POOL_TRUE}
 289     prefer_constant_pool: 1;
 290   /* Prefer STRD/LDRD instructions over PUSH/POP/LDM/STM.  */
 291   enum {PREF_LDRD_FALSE, PREF_LDRD_TRUE} prefer_ldrd_strd: 1;
 292   /* The preference for non short cirtcuit operation when optimizing for
 293      performance. The first element covers Thumb state and the second one
 294      is for ARM state.  */
 295   enum log_op_non_short_circuit {LOG_OP_NON_SHORT_CIRCUIT_FALSE,
 296                                  LOG_OP_NON_SHORT_CIRCUIT_TRUE};
 297   log_op_non_short_circuit logical_op_non_short_circuit_thumb: 1;
 298   log_op_non_short_circuit logical_op_non_short_circuit_arm: 1;
 299   /* Prefer 32-bit encoding instead of flag-setting 16-bit encoding.  */
 300   enum {DISPARAGE_FLAGS_NEITHER, DISPARAGE_FLAGS_PARTIAL, DISPARAGE_FLAGS_ALL}
 301     disparage_flag_setting_t16_encodings: 2;
 302   enum {PREF_NEON_64_FALSE, PREF_NEON_64_TRUE} prefer_neon_for_64bits: 1;
 303   /* Prefer to inline string operations like memset by using Neon.  */
 304   enum {PREF_NEON_STRINGOPS_FALSE, PREF_NEON_STRINGOPS_TRUE}
 305     string_ops_prefer_neon: 1;
 306   /* Bitfield encoding the fusible pairs of instructions.  Use FUSE_OPS
 307      in an initializer if multiple fusion operations are supported on a
 308      target.  */
 309   enum fuse_ops
 310   {
 311     FUSE_NOTHING   = 0,
 312     FUSE_MOVW_MOVT = 1 << 0,
 313     FUSE_AES_AESMC = 1 << 1
 314   } fusible_ops: 2;
 315   /* Depth of scheduling queue to check for L2 autoprefetcher.  */
 316   enum {SCHED_AUTOPREF_OFF, SCHED_AUTOPREF_RANK, SCHED_AUTOPREF_FULL}
 317     sched_autopref: 2;
 318 };
 319
 320 /* Smash multiple fusion operations into a type that can be used for an
 321    initializer.  */
 322 #define FUSE_OPS(x) ((tune_params::fuse_ops) (x))
 323
 324 extern const struct tune_params *current_tune;
 325 extern int vfp3_const_double_for_fract_bits (rtx);
 326 /* return power of two from operand, otherwise 0.  */
 327 extern int vfp3_const_double_for_bits (rtx);
 328
 329 extern void arm_emit_coreregs_64bit_shift (enum rtx_code, rtx, rtx, rtx, rtx,
 330                                            rtx);
 331 extern bool arm_fusion_enabled_p (tune_params::fuse_ops);
 332 extern bool arm_valid_symbolic_address_p (rtx);
 333 extern bool arm_validize_comparison (rtx *, rtx *, rtx *);
 334 #endif /* RTX_CODE */
 335
 336 extern bool arm_gen_setmem (rtx *);
 337 extern void arm_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel);
 338 extern bool arm_expand_vec_perm_const (rtx target, rtx op0, rtx op1, rtx sel);
 339
 340 extern bool arm_autoinc_modes_ok_p (machine_mode, enum arm_auto_incmodes);
 341
 342 extern void arm_emit_eabi_attribute (const char *, int, int);
 343
 344 extern void arm_reset_previous_fndecl (void);
 345 extern void save_restore_target_globals (tree);
 346
 347 /* Defined in gcc/common/config/arm-common.c.  */
 348 extern const char *arm_rewrite_selected_cpu (const char *name);
 349
 350 /* Defined in gcc/common/config/arm-c.c.  */
 351 extern void arm_lang_object_attributes_init (void);
 352 extern void arm_register_target_pragmas (void);
 353 extern void arm_cpu_cpp_builtins (struct cpp_reader *);
 354
 355 extern bool arm_is_constant_pool_ref (rtx);
 356
 357 /* The bits in this mask specify which instruction scheduling options should
 358    be used.  */
 359 extern unsigned int tune_flags;
 360
 361 /* Nonzero if this chip supports the ARM Architecture 3M extensions.  */
 362 extern int arm_arch3m;
 363
 364 /* Nonzero if this chip supports the ARM Architecture 4 extensions.  */
 365 extern int arm_arch4;
 366
 367 /* Nonzero if this chip supports the ARM Architecture 4t extensions.  */
 368 extern int arm_arch4t;
 369
 370 /* Nonzero if this chip supports the ARM Architecture 5 extensions.  */
 371 extern int arm_arch5;
 372
 373 /* Nonzero if this chip supports the ARM Architecture 5E extensions.  */
 374 extern int arm_arch5e;
 375
 376 /* Nonzero if this chip supports the ARM Architecture 6 extensions.  */
 377 extern int arm_arch6;
 378
 379 /* Nonzero if this chip supports the ARM 6K extensions.  */
 380 extern int arm_arch6k;
 381
 382 /* Nonzero if this chip supports the ARM 6KZ extensions.  */
 383 extern int arm_arch6kz;
 384
 385 /* Nonzero if instructions present in ARMv6-M can be used.  */
 386 extern int arm_arch6m;
 387
 388 /* Nonzero if this chip supports the ARM 7 extensions.  */
 389 extern int arm_arch7;
 390
 391 /* Nonzero if this chip supports the Large Physical Address Extension.  */
 392 extern int arm_arch_lpae;
 393
 394 /* Nonzero if instructions not present in the 'M' profile can be used.  */
 395 extern int arm_arch_notm;
 396
 397 /* Nonzero if instructions present in ARMv7E-M can be used.  */
 398 extern int arm_arch7em;
 399
 400 /* Nonzero if instructions present in ARMv8 can be used.  */
 401 extern int arm_arch8;
 402
 403 /* Nonzero if this chip can benefit from load scheduling.  */
 404 extern int arm_ld_sched;
 405
 406 /* Nonzero if this chip is a StrongARM.  */
 407 extern int arm_tune_strongarm;
 408
 409 /* Nonzero if this chip supports Intel Wireless MMX technology.  */
 410 extern int arm_arch_iwmmxt;
 411
 412 /* Nonzero if this chip supports Intel Wireless MMX2 technology.  */
 413 extern int arm_arch_iwmmxt2;
 414
 415 /* Nonzero if this chip is an XScale.  */
 416 extern int arm_arch_xscale;
 417
 418 /* Nonzero if tuning for XScale  */
 419 extern int arm_tune_xscale;
 420
 421 /* Nonzero if we want to tune for stores that access the write-buffer.
 422    This typically means an ARM6 or ARM7 with MMU or MPU.  */
 423 extern int arm_tune_wbuf;
 424
 425 /* Nonzero if tuning for Cortex-A9.  */
 426 extern int arm_tune_cortex_a9;
 427
 428 /* Nonzero if we should define __THUMB_INTERWORK__ in the
 429    preprocessor.
 430    XXX This is a bit of a hack, it's intended to help work around
 431    problems in GLD which doesn't understand that armv5t code is
 432    interworking clean.  */
 433 extern int arm_cpp_interwork;
 434
 435 /* Nonzero if chip supports Thumb 1.  */
 436 extern int arm_arch_thumb1;
 437
 438 /* Nonzero if chip supports Thumb 2.  */
 439 extern int arm_arch_thumb2;
 440
 441 /* Nonzero if chip supports integer division instruction.  */
 442 extern int arm_arch_arm_hwdiv;
 443 extern int arm_arch_thumb_hwdiv;
 444
 445 /* Nonzero if chip disallows volatile memory access in IT block.  */
 446 extern int arm_arch_no_volatile_ce;
 447
 448 /* Nonzero if we should use Neon to handle 64-bits operations rather
 449    than core registers.  */
 450 extern int prefer_neon_for_64bits;
 451
 452 /* Structure defining the current overall architectural target and tuning.  */
 453 struct arm_build_target
 454 {
 455   /* Name of the target CPU, if known, or NULL if the target CPU was not
 456      specified by the user (and inferred from the -march option).  */
 457   const char *core_name;
 458   /* Name of the target ARCH.  NULL if there is a selected CPU.  */
 459   const char *arch_name;
 460   /* Preprocessor substring (never NULL).  */
 461   const char *arch_pp_name;
 462   /* The base architecture value.  */
 463   enum base_architecture base_arch;
 464   /* The profile letter for the architecture, upper case by convention.  */
 465   char profile;
 466   /* Bitmap encapsulating the isa_bits for the target environment.  */
 467   sbitmap isa;
 468   /* Flags used for tuning.  Long term, these move into tune_params.  */
 469   unsigned int tune_flags;
 470   /* Tables with more detailed tuning information.  */
 471   const struct tune_params *tune;
 472   /* CPU identifier for the tuning target.  */
 473   enum processor_type tune_core;
 474 };
 475
 476 extern struct arm_build_target arm_active_target;
 477
 478 struct cpu_arch_extension
 479 {
 480   /* Feature name.  */
 481   const char *const name;
 482   /* True if the option is negative (removes extensions).  */
 483   bool remove;
 484   /* True if the option is an alias for another option with identical effect;
 485      the option will be ignored for canonicalization.  */
 486   bool alias;
 487   /* The modifier bits.  */
 488   const enum isa_feature isa_bits[isa_num_bits];
 489 };
 490
 491 struct cpu_arch_option
 492 {
 493   /* Name for this option.  */
 494   const char *name;
 495   /* List of feature extensions permitted.  */
 496   const struct cpu_arch_extension *extensions;
 497   /* Standard feature bits.  */
 498   enum isa_feature isa_bits[isa_num_bits];
 499 };
 500
 501 struct arch_option
 502 {
 503   /* Common option fields.  */
 504   cpu_arch_option common;
 505   /* Short string for this architecture.  */
 506   const char *arch;
 507   /* Base architecture, from which this specific architecture is derived.  */
 508   enum base_architecture base_arch;
 509   /* The profile letter for the architecture, upper case by convention.  */
 510   const char profile;
 511   /* Default tune target (in the absence of any more specific data).  */
 512   enum processor_type tune_id;
 513 };
 514
 515 struct cpu_option
 516 {
 517   /* Common option fields.  */
 518   cpu_arch_option common;
 519   /* Architecture upon which this CPU is based.  */
 520   enum arch_type arch;
 521 };
 522
 523 extern const arch_option all_architectures[];
 524 extern const cpu_option all_cores[];
 525
 526 const cpu_option *arm_parse_cpu_option_name (const cpu_option *, const char *,
 527                                              const char *);
 528 const arch_option *arm_parse_arch_option_name (const arch_option *,
 529                                                const char *, const char *);
 530 void arm_parse_option_features (sbitmap, const cpu_arch_option *,
 531                                 const char *);
 532
 533 void arm_initialize_isa (sbitmap, const enum isa_feature *);
 534
 535 #endif /* ! GCC_ARM_PROTOS_H */