1 /* Definitions of target machine for GNU compiler for Renesas / SuperH SH. 2 Copyright (C) 1993-2014 Free Software Foundation, Inc. 3 Contributed by Steve Chamberlain (sac@cygnus.com). 4 Improved by Jim Wilson (wilson@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_SH_PROTOS_H 23 #define GCC_SH_PROTOS_H 24 25 enum sh_function_kind { 26 /* A function with normal C ABI */ 27 FUNCTION_ORDINARY, 28 /* A special function that guarantees that some otherwise call-clobbered 29 registers are not clobbered. These can't go through the SH5 resolver, 30 because it only saves argument passing registers. */ 31 SFUNC_GOT, 32 /* A special function that should be linked statically. These are typically 33 smaller or not much larger than a PLT entry. 34 Some also have a non-standard ABI which precludes dynamic linking. */ 35 SFUNC_STATIC 36 }; 37 38 /* Atomic model. */ 39 struct sh_atomic_model 40 { 41 enum enum_type 42 { 43 none = 0, 44 soft_gusa, 45 hard_llcs, 46 soft_tcb, 47 soft_imask, 48 49 num_models 50 }; 51 52 /* If strict is set, disallow mixing of different models, as it would 53 happen on SH4A. */ 54 bool strict; 55 enum_type type; 56 57 /* Name string as it was specified on the command line. */ 58 const char* name; 59 60 /* Name string as it is used in C/C++ defines. */ 61 const char* cdef_name; 62 63 /* GBR offset variable for TCB model. */ 64 int tcb_gbr_offset; 65 }; 66 67 extern const sh_atomic_model& selected_atomic_model (void); 68 69 /* Shortcuts to check the currently selected atomic model. */ 70 #define TARGET_ATOMIC_ANY \ 71 selected_atomic_model ().type != sh_atomic_model::none 72 73 #define TARGET_ATOMIC_STRICT \ 74 selected_atomic_model ().strict 75 76 #define TARGET_ATOMIC_SOFT_GUSA \ 77 selected_atomic_model ().type == sh_atomic_model::soft_gusa 78 79 #define TARGET_ATOMIC_HARD_LLCS \ 80 selected_atomic_model ().type == sh_atomic_model::hard_llcs 81 82 #define TARGET_ATOMIC_SOFT_TCB \ 83 selected_atomic_model ().type == sh_atomic_model::soft_tcb 84 85 #define TARGET_ATOMIC_SOFT_TCB_GBR_OFFSET_RTX \ 86 GEN_INT (selected_atomic_model ().tcb_gbr_offset) 87 88 #define TARGET_ATOMIC_SOFT_IMASK \ 89 selected_atomic_model ().type == sh_atomic_model::soft_imask 90 91 #ifdef RTX_CODE 92 extern rtx sh_fsca_sf2int (void); 93 extern rtx sh_fsca_int2sf (void); 94 95 /* Declare functions defined in sh.c and used in templates. */ 96 97 extern const char *output_branch (int, rtx, rtx *); 98 extern const char *output_ieee_ccmpeq (rtx, rtx *); 99 extern const char *output_branchy_insn (enum rtx_code, const char *, rtx, rtx *); 100 extern const char *output_movedouble (rtx, rtx[], enum machine_mode); 101 extern const char *output_movepcrel (rtx, rtx[], enum machine_mode); 102 extern const char *output_far_jump (rtx, rtx); 103 104 extern rtx sfunc_uses_reg (rtx); 105 extern int barrier_align (rtx); 106 extern int sh_loop_align (rtx); 107 extern bool fp_zero_operand (rtx); 108 extern bool fp_one_operand (rtx); 109 extern rtx get_fpscr_rtx (void); 110 extern bool sh_legitimate_index_p (enum machine_mode, rtx, bool, bool); 111 extern bool sh_legitimize_reload_address (rtx *, enum machine_mode, int, int); 112 extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx); 113 extern bool nonpic_symbol_mentioned_p (rtx); 114 extern void emit_sf_insn (rtx); 115 extern void emit_df_insn (rtx); 116 extern void output_pic_addr_const (FILE *, rtx); 117 extern bool expand_block_move (rtx *); 118 extern void prepare_move_operands (rtx[], enum machine_mode mode); 119 extern bool sh_expand_cmpstr (rtx *); 120 extern bool sh_expand_cmpnstr (rtx *); 121 extern bool sh_expand_strlen (rtx *); 122 extern enum rtx_code prepare_cbranch_operands (rtx *, enum machine_mode mode, 123 enum rtx_code comparison); 124 extern void expand_cbranchsi4 (rtx *operands, enum rtx_code comparison, int); 125 extern bool expand_cbranchdi4 (rtx *operands, enum rtx_code comparison); 126 extern void sh_emit_scc_to_t (enum rtx_code, rtx, rtx); 127 extern rtx sh_emit_cheap_store_flag (enum machine_mode, enum rtx_code, rtx, rtx); 128 extern void sh_emit_compare_and_branch (rtx *, enum machine_mode); 129 extern void sh_emit_compare_and_set (rtx *, enum machine_mode); 130 extern bool sh_ashlsi_clobbers_t_reg_p (rtx); 131 extern bool sh_lshrsi_clobbers_t_reg_p (rtx); 132 extern void gen_shifty_op (int, rtx *); 133 extern void gen_shifty_hi_op (int, rtx *); 134 extern bool expand_ashiftrt (rtx *); 135 extern bool sh_dynamicalize_shift_p (rtx); 136 extern int shl_and_kind (rtx, rtx, int *); 137 extern int shl_and_length (rtx); 138 extern int shl_and_scr_length (rtx); 139 extern bool gen_shl_and (rtx, rtx, rtx, rtx); 140 extern int shl_sext_kind (rtx, rtx, int *); 141 extern int shl_sext_length (rtx); 142 extern bool gen_shl_sext (rtx, rtx, rtx, rtx); 143 extern rtx gen_datalabel_ref (rtx); 144 extern int regs_used (rtx, int); 145 extern void fixup_addr_diff_vecs (rtx); 146 extern int get_dest_uid (rtx, int); 147 extern void final_prescan_insn (rtx, rtx *, int); 148 extern enum tls_model tls_symbolic_operand (rtx, enum machine_mode); 149 extern bool system_reg_operand (rtx, enum machine_mode); 150 extern bool reg_unused_after (rtx, rtx); 151 extern void expand_sf_unop (rtx (*)(rtx, rtx, rtx), rtx *); 152 extern void expand_sf_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *); 153 extern void expand_df_unop (rtx (*)(rtx, rtx, rtx), rtx *); 154 extern void expand_df_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *); 155 extern int sh_insn_length_adjustment (rtx); 156 extern bool sh_can_redirect_branch (rtx, rtx); 157 extern void sh_expand_unop_v2sf (enum rtx_code, rtx, rtx); 158 extern void sh_expand_binop_v2sf (enum rtx_code, rtx, rtx, rtx); 159 extern bool sh_expand_t_scc (rtx *); 160 extern rtx sh_gen_truncate (enum machine_mode, rtx, int); 161 extern bool sh_vector_mode_supported_p (enum machine_mode); 162 extern bool sh_cfun_trap_exit_p (void); 163 extern rtx sh_find_equiv_gbr_addr (rtx cur_insn, rtx mem); 164 extern int sh_eval_treg_value (rtx op); 165 extern HOST_WIDE_INT sh_disp_addr_displacement (rtx mem_op); 166 extern int sh_max_mov_insn_displacement (machine_mode mode, bool consider_sh2a); 167 168 /* Result value of sh_find_set_of_reg. */ 169 struct set_of_reg 170 { 171 /* The insn where sh_find_set_of_reg stopped looking. 172 Can be NULL_RTX if the end of the insn list was reached. */ 173 rtx insn; 174 175 /* The set rtx of the specified reg if found, NULL_RTX otherwise. */ 176 const_rtx set_rtx; 177 178 /* The set source rtx of the specified reg if found, NULL_RTX otherwise. 179 Usually, this is the most interesting return value. */ 180 rtx set_src; 181 }; 182 183 extern set_of_reg sh_find_set_of_reg (rtx reg, rtx insn, rtx(*stepfunc)(rtx)); 184 extern bool sh_is_logical_t_store_expr (rtx op, rtx insn); 185 extern rtx sh_try_omit_signzero_extend (rtx extended_op, rtx insn); 186 #endif /* RTX_CODE */ 187 188 extern void sh_cpu_cpp_builtins (cpp_reader* pfile); 189 190 extern const char *output_jump_label_table (void); 191 extern rtx get_t_reg_rtx (void); 192 extern rtx get_fpscr_rtx (void); 193 extern int sh_media_register_for_return (void); 194 extern void sh_expand_prologue (void); 195 extern void sh_expand_epilogue (bool); 196 extern void sh_set_return_address (rtx, rtx); 197 extern int initial_elimination_offset (int, int); 198 extern bool fldi_ok (void); 199 extern bool sh_hard_regno_rename_ok (unsigned int, unsigned int); 200 extern bool sh_cfun_interrupt_handler_p (void); 201 extern bool sh_cfun_resbank_handler_p (void); 202 extern bool sh_attr_renesas_p (const_tree); 203 extern bool sh_cfun_attr_renesas_p (void); 204 extern bool sh_cannot_change_mode_class 205 (enum machine_mode, enum machine_mode, enum reg_class); 206 extern bool sh_small_register_classes_for_mode_p (enum machine_mode); 207 extern void sh_mark_label (rtx, int); 208 extern bool check_use_sfunc_addr (rtx, rtx); 209 210 #ifdef HARD_CONST 211 extern void fpscr_set_from_mem (int, HARD_REG_SET); 212 #endif 213 214 extern void sh_pr_interrupt (struct cpp_reader *); 215 extern void sh_pr_trapa (struct cpp_reader *); 216 extern void sh_pr_nosave_low_regs (struct cpp_reader *); 217 extern rtx function_symbol (rtx, const char *, enum sh_function_kind); 218 extern rtx sh_get_pr_initial_val (void); 219 220 extern void sh_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, 221 signed int, enum machine_mode); 222 extern rtx sh_dwarf_register_span (rtx); 223 224 extern rtx replace_n_hard_rtx (rtx, rtx *, int , int); 225 extern int shmedia_cleanup_truncate (rtx *, void *); 226 227 extern bool sh_contains_memref_p (rtx); 228 extern bool sh_loads_bankedreg_p (rtx); 229 extern rtx shmedia_prepare_call_address (rtx fnaddr, int is_sibcall); 230 extern int sh2a_get_function_vector_number (rtx); 231 extern bool sh2a_is_function_vector_call (rtx); 232 extern void sh_fix_range (const char *); 233 extern bool sh_hard_regno_mode_ok (unsigned int, enum machine_mode); 234 extern bool sh_can_use_simple_return_p (void); 235 #endif /* ! GCC_SH_PROTOS_H */ 236