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      1 /* Prototypes of target machine for GNU compiler for Xtensa.
      2    Copyright (C) 2001-2022 Free Software Foundation, Inc.
      3    Contributed by Bob Wilson (bwilson (at) tensilica.com) at Tensilica.
      4 
      5 This file is part of GCC.
      6 
      7 GCC is free software; you can redistribute it and/or modify it under
      8 the terms of the GNU General Public License as published by the Free
      9 Software Foundation; either version 3, or (at your option) any later
     10 version.
     11 
     12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
     13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
     14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     15 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 #ifndef __XTENSA_PROTOS_H__
     22 #define __XTENSA_PROTOS_H__
     23 
     24 /* Functions to test whether an immediate fits in a given field.  */
     25 extern bool xtensa_simm8 (HOST_WIDE_INT);
     26 extern bool xtensa_simm8x256 (HOST_WIDE_INT);
     27 extern bool xtensa_simm12b (HOST_WIDE_INT);
     28 extern bool xtensa_b4const_or_zero (HOST_WIDE_INT);
     29 extern bool xtensa_b4constu (HOST_WIDE_INT);
     30 extern bool xtensa_mask_immediate (HOST_WIDE_INT);
     31 extern bool xtensa_mem_offset (unsigned, machine_mode);
     32 
     33 /* Functions within xtensa.cc that we reference.  */
     34 #ifdef RTX_CODE
     35 extern int xt_true_regnum (rtx);
     36 extern int xtensa_valid_move (machine_mode, rtx *);
     37 extern int smalloffset_mem_p (rtx);
     38 extern int constantpool_mem_p (rtx);
     39 extern void xtensa_extend_reg (rtx, rtx);
     40 extern void xtensa_expand_conditional_branch (rtx *, machine_mode);
     41 extern int xtensa_expand_conditional_move (rtx *, int);
     42 extern int xtensa_expand_scc (rtx *, machine_mode);
     43 extern int xtensa_expand_block_move (rtx *);
     44 extern void xtensa_split_operand_pair (rtx *, machine_mode);
     45 extern int xtensa_emit_move_sequence (rtx *, machine_mode);
     46 extern rtx xtensa_copy_incoming_a7 (rtx);
     47 extern void xtensa_expand_nonlocal_goto (rtx *);
     48 extern void xtensa_expand_compare_and_swap (rtx, rtx, rtx, rtx);
     49 extern void xtensa_expand_atomic (enum rtx_code, rtx, rtx, rtx, bool);
     50 extern void xtensa_emit_loop_end (rtx_insn *, rtx *);
     51 extern char *xtensa_emit_branch (bool, bool, rtx *);
     52 extern char *xtensa_emit_bit_branch (bool, bool, rtx *);
     53 extern char *xtensa_emit_movcc (bool, bool, bool, rtx *);
     54 extern char *xtensa_emit_call (int, rtx *);
     55 extern bool xtensa_tls_referenced_p (rtx);
     56 
     57 #ifdef TREE_CODE
     58 extern void init_cumulative_args (CUMULATIVE_ARGS *, int);
     59 #endif /* TREE_CODE */
     60 
     61 extern void print_operand (FILE *, rtx, int);
     62 extern void print_operand_address (FILE *, rtx);
     63 extern void xtensa_output_literal (FILE *, rtx, machine_mode, int);
     64 extern void xtensa_set_return_address (rtx, rtx);
     65 extern rtx xtensa_return_addr (int, rtx);
     66 #endif /* RTX_CODE */
     67 
     68 extern void xtensa_setup_frame_addresses (void);
     69 extern int xtensa_dbx_register_number (int);
     70 extern long compute_frame_size (poly_int64);
     71 extern bool xtensa_use_return_instruction_p (void);
     72 extern void xtensa_expand_prologue (void);
     73 extern void xtensa_expand_epilogue (void);
     74 extern void order_regs_for_local_alloc (void);
     75 extern enum reg_class xtensa_regno_to_class (int regno);
     76 extern HOST_WIDE_INT xtensa_initial_elimination_offset (int from, int to);
     77 
     78 #endif /* !__XTENSA_PROTOS_H__ */
     79