1 /* Prototypes of target machine for GNU compiler for Xtensa. 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. 3 Contributed by Bob Wilson (bwilson@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.c 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