gcc/config/sh/sh-protos.h

   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_insn *, rtx *);
  99 extern const char *output_branchy_insn (enum rtx_code, const char *,
 100                                         rtx_insn *, rtx *);
 101 extern const char *output_movedouble (rtx, rtx[], enum machine_mode);
 102 extern const char *output_movepcrel (rtx, rtx[], enum machine_mode);
 103 extern const char *output_far_jump (rtx_insn *, rtx);
 104
 105 extern rtx sfunc_uses_reg (rtx);
 106 extern int barrier_align (rtx);
 107 extern int sh_loop_align (rtx);
 108 extern bool fp_zero_operand (rtx);
 109 extern bool fp_one_operand (rtx);
 110 extern rtx get_fpscr_rtx (void);
 111 extern bool sh_legitimate_index_p (enum machine_mode, rtx, bool, bool);
 112 extern bool sh_legitimize_reload_address (rtx *, enum machine_mode, int, int);
 113 extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx);
 114 extern bool nonpic_symbol_mentioned_p (rtx);
 115 extern void emit_sf_insn (rtx);
 116 extern void emit_df_insn (rtx);
 117 extern void output_pic_addr_const (FILE *, rtx);
 118 extern bool expand_block_move (rtx *);
 119 extern void prepare_move_operands (rtx[], enum machine_mode mode);
 120 extern bool sh_expand_cmpstr (rtx *);
 121 extern bool sh_expand_cmpnstr (rtx *);
 122 extern bool sh_expand_strlen  (rtx *);
 123 extern void sh_expand_setmem (rtx *);
 124 extern enum rtx_code prepare_cbranch_operands (rtx *, enum machine_mode mode,
 125                                                enum rtx_code comparison);
 126 extern void expand_cbranchsi4 (rtx *operands, enum rtx_code comparison, int);
 127 extern bool expand_cbranchdi4 (rtx *operands, enum rtx_code comparison);
 128 extern void sh_emit_scc_to_t (enum rtx_code, rtx, rtx);
 129 extern rtx sh_emit_cheap_store_flag (enum machine_mode, enum rtx_code, rtx, rtx);
 130 extern void sh_emit_compare_and_branch (rtx *, enum machine_mode);
 131 extern void sh_emit_compare_and_set (rtx *, enum machine_mode);
 132 extern bool sh_ashlsi_clobbers_t_reg_p (rtx);
 133 extern bool sh_lshrsi_clobbers_t_reg_p (rtx);
 134 extern void gen_shifty_op (int, rtx *);
 135 extern void gen_shifty_hi_op (int, rtx *);
 136 extern bool expand_ashiftrt (rtx *);
 137 extern bool sh_dynamicalize_shift_p (rtx);
 138 extern int shl_and_kind (rtx, rtx, int *);
 139 extern int shl_and_length (rtx);
 140 extern int shl_and_scr_length (rtx);
 141 extern bool gen_shl_and (rtx, rtx, rtx, rtx);
 142 extern int shl_sext_kind (rtx, rtx, int *);
 143 extern int shl_sext_length (rtx);
 144 extern bool gen_shl_sext (rtx, rtx, rtx, rtx);
 145 extern rtx gen_datalabel_ref (rtx);
 146 extern int regs_used (rtx, int);
 147 extern void fixup_addr_diff_vecs (rtx);
 148 extern int get_dest_uid (rtx, int);
 149 extern void final_prescan_insn (rtx_insn *, rtx *, int);
 150 extern enum tls_model tls_symbolic_operand (rtx, enum machine_mode);
 151 extern bool system_reg_operand (rtx, enum machine_mode);
 152 extern bool reg_unused_after (rtx, rtx);
 153 extern void expand_sf_unop (rtx (*)(rtx, rtx, rtx), rtx *);
 154 extern void expand_sf_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *);
 155 extern void expand_df_unop (rtx (*)(rtx, rtx, rtx), rtx *);
 156 extern void expand_df_binop (rtx (*)(rtx, rtx, rtx, rtx), rtx *);
 157 extern int sh_insn_length_adjustment (rtx_insn *);
 158 extern bool sh_can_redirect_branch (rtx, rtx);
 159 extern void sh_expand_unop_v2sf (enum rtx_code, rtx, rtx);
 160 extern void sh_expand_binop_v2sf (enum rtx_code, rtx, rtx, rtx);
 161 extern bool sh_expand_t_scc (rtx *);
 162 extern rtx sh_gen_truncate (enum machine_mode, rtx, int);
 163 extern bool sh_vector_mode_supported_p (enum machine_mode);
 164 extern bool sh_cfun_trap_exit_p (void);
 165 extern rtx sh_find_equiv_gbr_addr (rtx cur_insn, rtx mem);
 166 extern int sh_eval_treg_value (rtx op);
 167 extern HOST_WIDE_INT sh_disp_addr_displacement (rtx mem_op);
 168 extern int sh_max_mov_insn_displacement (machine_mode mode, bool consider_sh2a);
 169
 170 /* Result value of sh_find_set_of_reg.  */
 171 struct set_of_reg
 172 {
 173   /* The insn where sh_find_set_of_reg stopped looking.
 174      Can be NULL_RTX if the end of the insn list was reached.  */
 175   rtx insn;
 176
 177   /* The set rtx of the specified reg if found, NULL_RTX otherwise.  */
 178   const_rtx set_rtx;
 179
 180   /* The set source rtx of the specified reg if found, NULL_RTX otherwise.
 181      Usually, this is the most interesting return value.  */
 182   rtx set_src;
 183 };
 184
 185 extern set_of_reg sh_find_set_of_reg (rtx reg, rtx insn, rtx_insn *(*stepfunc)(rtx));
 186 extern bool sh_is_logical_t_store_expr (rtx op, rtx insn);
 187 extern rtx sh_try_omit_signzero_extend (rtx extended_op, rtx insn);
 188 #endif /* RTX_CODE */
 189
 190 extern void sh_cpu_cpp_builtins (cpp_reader* pfile);
 191
 192 extern const char *output_jump_label_table (void);
 193 extern rtx get_t_reg_rtx (void);
 194 extern rtx get_fpscr_rtx (void);
 195 extern int sh_media_register_for_return (void);
 196 extern void sh_expand_prologue (void);
 197 extern void sh_expand_epilogue (bool);
 198 extern void sh_set_return_address (rtx, rtx);
 199 extern int initial_elimination_offset (int, int);
 200 extern bool fldi_ok (void);
 201 extern bool sh_hard_regno_rename_ok (unsigned int, unsigned int);
 202 extern bool sh_cfun_interrupt_handler_p (void);
 203 extern bool sh_cfun_resbank_handler_p (void);
 204 extern bool sh_attr_renesas_p (const_tree);
 205 extern bool sh_cfun_attr_renesas_p (void);
 206 extern bool sh_cannot_change_mode_class
 207               (enum machine_mode, enum machine_mode, enum reg_class);
 208 extern bool sh_small_register_classes_for_mode_p (enum machine_mode);
 209 extern void sh_mark_label (rtx, int);
 210 extern bool check_use_sfunc_addr (rtx, rtx);
 211
 212 #ifdef HARD_CONST
 213 extern void fpscr_set_from_mem (int, HARD_REG_SET);
 214 #endif
 215
 216 extern void sh_pr_interrupt (struct cpp_reader *);
 217 extern void sh_pr_trapa (struct cpp_reader *);
 218 extern void sh_pr_nosave_low_regs (struct cpp_reader *);
 219 extern rtx function_symbol (rtx, const char *, enum sh_function_kind);
 220 extern rtx sh_get_pr_initial_val (void);
 221
 222 extern void sh_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree,
 223                                      signed int, enum machine_mode);
 224 extern rtx sh_dwarf_register_span (rtx);
 225
 226 extern rtx replace_n_hard_rtx (rtx, rtx *, int , int);
 227 extern int shmedia_cleanup_truncate (rtx *, void *);
 228
 229 extern bool sh_contains_memref_p (rtx);
 230 extern bool sh_loads_bankedreg_p (rtx);
 231 extern rtx shmedia_prepare_call_address (rtx fnaddr, int is_sibcall);
 232 extern int sh2a_get_function_vector_number (rtx);
 233 extern bool sh2a_is_function_vector_call (rtx);
 234 extern void sh_fix_range (const char *);
 235 extern bool sh_hard_regno_mode_ok (unsigned int, enum machine_mode);
 236 extern bool sh_can_use_simple_return_p (void);
 237 #endif /* ! GCC_SH_PROTOS_H */