gcc/config/mips/mips-protos.h

   1 /* Prototypes of target machine for GNU compiler.  MIPS version.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   3    1999, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
   4    Contributed by A. Lichnewsky (lich@inria.inria.fr).
   5    Changed by Michael Meissner  (meissner@osf.org).
   6    64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and
   7    Brendan Eich (brendan@microunity.com).
   8
   9 This file is part of GCC.
  10
  11 GCC is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 3, or (at your option)
  14 any later version.
  15
  16 GCC is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with GCC; see the file COPYING3.  If not see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 #ifndef GCC_MIPS_PROTOS_H
  26 #define GCC_MIPS_PROTOS_H
  27
  28 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
  29
  30    SYMBOL_GENERAL
  31        Used when none of the below apply.
  32
  33    SYMBOL_SMALL_DATA
  34        The symbol refers to something in a small data section.
  35
  36    SYMBOL_CONSTANT_POOL
  37        The symbol refers to something in the mips16 constant pool.
  38
  39    SYMBOL_GOT_PAGE_OFST
  40        The symbol's value will be calculated by loading an address
  41        from the GOT and then applying a 16-bit offset.
  42
  43    SYMBOL_GOT_DISP
  44        The symbol's value will be loaded directly from the GOT.
  45
  46    SYMBOL_GOTOFF_PAGE
  47        An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST.  It represents the
  48        offset from _gp of the GOT entry.
  49
  50    SYMBOL_GOTOFF_DISP
  51        An UNSPEC wrapper around a SYMBOL_GOT_DISP.  It represents the
  52        the offset from _gp of the symbol's GOT entry.
  53
  54    SYMBOL_GOTOFF_CALL
  55        Like SYMBOL_GOTOFF_DISP, but used when calling a global function.
  56        The GOT entry is allowed to point to a stub rather than to the
  57        function itself.
  58
  59    SYMBOL_GOTOFF_LOADGP
  60        An UNSPEC wrapper around a function's address.  It represents the
  61        offset of _gp from the start of the function.
  62
  63    SYMBOL_TLS
  64        A thread-local symbol.
  65
  66    SYMBOL_TLSGD
  67    SYMBOL_TLSLDM
  68    SYMBOL_DTPREL
  69    SYMBOL_GOTTPREL
  70    SYMBOL_TPREL
  71        UNSPEC wrappers around SYMBOL_TLS, corresponding to the
  72        thread-local storage relocation operators.
  73
  74    SYMBOL_64_HIGH
  75        For a 64-bit symbolic address X, this is the value of
  76        (%highest(X) << 16) + %higher(X).
  77
  78    SYMBOL_64_MID
  79        For a 64-bit symbolic address X, this is the value of
  80        (%higher(X) << 16) + %hi(X).
  81
  82    SYMBOL_64_LOW
  83        For a 64-bit symbolic address X, this is the value of
  84        (%hi(X) << 16) + %lo(X).
  85
  86    SYMBOL_HALF
  87        An UNSPEC wrapper around any kind of address.  It represents the
  88        low 16 bits of that address.  */
  89 enum mips_symbol_type {
  90   SYMBOL_GENERAL,
  91   SYMBOL_SMALL_DATA,
  92   SYMBOL_CONSTANT_POOL,
  93   SYMBOL_GOT_PAGE_OFST,
  94   SYMBOL_GOT_DISP,
  95   SYMBOL_GOTOFF_PAGE,
  96   SYMBOL_GOTOFF_DISP,
  97   SYMBOL_GOTOFF_CALL,
  98   SYMBOL_GOTOFF_LOADGP,
  99   SYMBOL_TLS,
 100   SYMBOL_TLSGD,
 101   SYMBOL_TLSLDM,
 102   SYMBOL_DTPREL,
 103   SYMBOL_GOTTPREL,
 104   SYMBOL_TPREL,
 105   SYMBOL_64_HIGH,
 106   SYMBOL_64_MID,
 107   SYMBOL_64_LOW,
 108   SYMBOL_HALF
 109 };
 110 #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1)
 111
 112 /* Identifiers a style of $gp initialization sequence.
 113
 114    LOADGP_NONE
 115         No initialization sequence is needed.
 116
 117    LOADGP_OLDABI
 118         The o32 and o64 PIC sequence (the kind traditionally generated
 119         by .cpload).
 120
 121    LOADGP_NEWABI
 122         The n32 and n64 PIC sequence (the kind traditionally generated
 123         by .cpsetup).
 124
 125    LOADGP_ABSOLUTE
 126         The GNU absolute sequence, as generated by loadgp_absolute.
 127
 128    LOADGP_RTP
 129         The VxWorks RTP PIC sequence, as generated by loadgp_rtp.  */
 130 enum mips_loadgp_style {
 131   LOADGP_NONE,
 132   LOADGP_OLDABI,
 133   LOADGP_NEWABI,
 134   LOADGP_ABSOLUTE,
 135   LOADGP_RTP
 136 };
 137
 138 struct mips16e_save_restore_info;
 139
 140 extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_type *);
 141 extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int);
 142 extern bool mips_stack_address_p (rtx, enum machine_mode);
 143 extern int mips_address_insns (rtx, enum machine_mode);
 144 extern int mips_const_insns (rtx);
 145 extern int mips_fetch_insns (rtx);
 146 extern int mips_idiv_insns (void);
 147 extern int fp_register_operand (rtx, enum machine_mode);
 148 extern int lo_operand (rtx, enum machine_mode);
 149 extern bool mips_legitimate_address_p (enum machine_mode, rtx, int);
 150 extern rtx mips_split_symbol (rtx, rtx);
 151 extern rtx mips_unspec_address (rtx, enum mips_symbol_type);
 152 extern bool mips_legitimize_address (rtx *, enum machine_mode);
 153 extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
 154 extern bool mips_legitimize_move (enum machine_mode, rtx, rtx);
 155
 156 extern int m16_uimm3_b (rtx, enum machine_mode);
 157 extern int m16_simm4_1 (rtx, enum machine_mode);
 158 extern int m16_nsimm4_1 (rtx, enum machine_mode);
 159 extern int m16_simm5_1 (rtx, enum machine_mode);
 160 extern int m16_nsimm5_1 (rtx, enum machine_mode);
 161 extern int m16_uimm5_4 (rtx, enum machine_mode);
 162 extern int m16_nuimm5_4 (rtx, enum machine_mode);
 163 extern int m16_simm8_1 (rtx, enum machine_mode);
 164 extern int m16_nsimm8_1 (rtx, enum machine_mode);
 165 extern int m16_uimm8_1 (rtx, enum machine_mode);
 166 extern int m16_nuimm8_1 (rtx, enum machine_mode);
 167 extern int m16_uimm8_m1_1 (rtx, enum machine_mode);
 168 extern int m16_uimm8_4 (rtx, enum machine_mode);
 169 extern int m16_nuimm8_4 (rtx, enum machine_mode);
 170 extern int m16_simm8_8 (rtx, enum machine_mode);
 171 extern int m16_nsimm8_8 (rtx, enum machine_mode);
 172
 173 extern rtx mips_subword (rtx, int);
 174 extern bool mips_split_64bit_move_p (rtx, rtx);
 175 extern void mips_split_64bit_move (rtx, rtx);
 176 extern const char *mips_output_move (rtx, rtx);
 177 extern void mips_restore_gp (void);
 178 #ifdef RTX_CODE
 179 extern bool mips_emit_scc (enum rtx_code, rtx);
 180 extern void gen_conditional_branch (rtx *, enum rtx_code);
 181 extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx);
 182 #endif
 183 extern void gen_conditional_move (rtx *);
 184 extern void mips_gen_conditional_trap (rtx *);
 185 extern void mips_expand_call (rtx, rtx, rtx, rtx, int);
 186 extern void mips_emit_fcc_reload (rtx, rtx, rtx);
 187 extern void mips_set_return_address (rtx, rtx);
 188 extern bool mips_expand_block_move (rtx, rtx, rtx);
 189 extern void mips_expand_synci_loop (rtx, rtx);
 190
 191 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
 192 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
 193                                   tree, int);
 194 extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *,
 195                                      enum machine_mode, tree, int);
 196 extern int function_arg_boundary (enum machine_mode, tree);
 197 extern bool mips_pad_arg_upward (enum machine_mode, tree);
 198 extern bool mips_pad_reg_upward (enum machine_mode, tree);
 199 extern void mips_va_start (tree, rtx);
 200
 201 extern bool mips_expand_unaligned_load (rtx, rtx, unsigned int, int);
 202 extern bool mips_expand_unaligned_store (rtx, rtx, unsigned int, int);
 203 extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x);
 204 extern void override_options (void);
 205 extern void mips_conditional_register_usage (void);
 206 extern void mips_order_regs_for_local_alloc (void);
 207 extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT);
 208
 209 extern void print_operand (FILE *, rtx, int);
 210 extern void print_operand_address (FILE *, rtx);
 211 extern void mips_output_external (FILE *, tree, const char *);
 212 extern void mips_output_filename (FILE *, const char *);
 213 extern void mips_output_ascii (FILE *, const char *, size_t, const char *);
 214 extern void mips_output_aligned_bss (FILE *, tree, const char *,
 215                                      unsigned HOST_WIDE_INT, int);
 216 extern void mips_output_aligned_decl_common (FILE *, tree, const char *,
 217                                              unsigned HOST_WIDE_INT,
 218                                              unsigned int);
 219 extern void mips_declare_common_object (FILE *, const char *,
 220                                         const char *, unsigned HOST_WIDE_INT,
 221                                         unsigned int, bool);
 222 extern void mips_declare_object (FILE *, const char *, const char *,
 223                                  const char *, ...) ATTRIBUTE_PRINTF_4;
 224 extern void mips_declare_object_name (FILE *, const char *, tree);
 225 extern void mips_finish_declare_object (FILE *, tree, int, int);
 226
 227 extern bool mips_small_data_pattern_p (rtx);
 228 extern rtx mips_rewrite_small_data (rtx);
 229 extern HOST_WIDE_INT compute_frame_size (HOST_WIDE_INT);
 230 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int);
 231 extern rtx mips_return_addr (int, rtx);
 232 extern enum mips_loadgp_style mips_current_loadgp_style (void);
 233 extern void mips_expand_prologue (void);
 234 extern void mips_expand_epilogue (int);
 235 extern int mips_can_use_return_insn (void);
 236 extern struct rtx_def *mips_function_value (tree, tree, enum machine_mode);
 237
 238 extern bool mips_cannot_change_mode_class (enum machine_mode,
 239                                            enum machine_mode, enum reg_class);
 240 extern bool mips_dangerous_for_la25_p (rtx);
 241 extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class);
 242 extern enum reg_class mips_secondary_reload_class (enum reg_class,
 243                                                    enum machine_mode,
 244                                                    rtx, int);
 245 extern int mips_class_max_nregs (enum reg_class, enum machine_mode);
 246 extern int build_mips16_call_stub (rtx, rtx, rtx, int);
 247 extern int mips_register_move_cost (enum machine_mode, enum reg_class,
 248                                     enum reg_class);
 249
 250 extern int mips_adjust_insn_length (rtx, int);
 251 extern const char *mips_output_load_label (void);
 252 extern const char *mips_output_conditional_branch (rtx, rtx *, const char *,
 253                                                    const char *);
 254 extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool);
 255 extern const char *mips_output_division (const char *, rtx *);
 256 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode);
 257 extern bool mips_linked_madd_p (rtx, rtx);
 258 extern int mips_store_data_bypass_p (rtx, rtx);
 259 extern rtx mips_prefetch_cookie (rtx, rtx);
 260
 261 extern void irix_asm_output_align (FILE *, unsigned);
 262 extern const char *current_section_name (void);
 263 extern unsigned int current_section_flags (void);
 264 extern bool mips_use_ins_ext_p (rtx, rtx, rtx);
 265
 266 extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT);
 267 extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT,
 268                                             struct mips16e_save_restore_info *);
 269
 270 #endif /* ! GCC_MIPS_PROTOS_H */