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 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 2, 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 COPYING.  If not, write to
  23 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  24 Boston, MA 02110-1301, USA.  */
  25
  26 #ifndef GCC_MIPS_PROTOS_H
  27 #define GCC_MIPS_PROTOS_H
  28
  29 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
  30
  31    SYMBOL_GENERAL
  32        Used when none of the below apply.
  33
  34    SYMBOL_SMALL_DATA
  35        The symbol refers to something in a small data section.
  36
  37    SYMBOL_CONSTANT_POOL
  38        The symbol refers to something in the mips16 constant pool.
  39
  40    SYMBOL_GOT_PAGE_OFST
  41        The symbol's value will be calculated by loading an address
  42        from the GOT and then applying a 16-bit offset.
  43
  44    SYMBOL_GOT_DISP
  45        The symbol's value will be loaded directly from the GOT.
  46
  47    SYMBOL_GOTOFF_PAGE
  48        An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST.  It represents the
  49        offset from _gp of the GOT entry.
  50
  51    SYMBOL_GOTOFF_DISP
  52        An UNSPEC wrapper around a SYMBOL_GOT_DISP.  It represents the
  53        the offset from _gp of the symbol's GOT entry.
  54
  55    SYMBOL_GOTOFF_CALL
  56        Like SYMBOL_GOTOFF_DISP, but used when calling a global function.
  57        The GOT entry is allowed to point to a stub rather than to the
  58        function itself.
  59
  60    SYMBOL_GOTOFF_LOADGP
  61        An UNSPEC wrapper around a function's address.  It represents the
  62        offset of _gp from the start of the function.
  63
  64    SYMBOL_TLS
  65        A thread-local symbol.
  66
  67    SYMBOL_TLSGD
  68    SYMBOL_TLSLDM
  69    SYMBOL_DTPREL
  70    SYMBOL_GOTTPREL
  71    SYMBOL_TPREL
  72        UNSPEC wrappers around SYMBOL_TLS, corresponding to the
  73        thread-local storage relocation operators.
  74
  75    SYMBOL_64_HIGH
  76        For a 64-bit symbolic address X, this is the value of
  77        (%highest(X) << 16) + %higher(X).
  78
  79    SYMBOL_64_MID
  80        For a 64-bit symbolic address X, this is the value of
  81        (%higher(X) << 16) + %hi(X).
  82
  83    SYMBOL_64_LOW
  84        For a 64-bit symbolic address X, this is the value of
  85        (%hi(X) << 16) + %lo(X).
  86
  87    SYMBOL_HALF
  88        An UNSPEC wrapper around any kind of address.  It represents the
  89        low 16 bits of that address.  */
  90 enum mips_symbol_type {
  91   SYMBOL_GENERAL,
  92   SYMBOL_SMALL_DATA,
  93   SYMBOL_CONSTANT_POOL,
  94   SYMBOL_GOT_PAGE_OFST,
  95   SYMBOL_GOT_DISP,
  96   SYMBOL_GOTOFF_PAGE,
  97   SYMBOL_GOTOFF_DISP,
  98   SYMBOL_GOTOFF_CALL,
  99   SYMBOL_GOTOFF_LOADGP,
 100   SYMBOL_TLS,
 101   SYMBOL_TLSGD,
 102   SYMBOL_TLSLDM,
 103   SYMBOL_DTPREL,
 104   SYMBOL_GOTTPREL,
 105   SYMBOL_TPREL,
 106   SYMBOL_64_HIGH,
 107   SYMBOL_64_MID,
 108   SYMBOL_64_LOW,
 109   SYMBOL_HALF
 110 };
 111 #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1)
 112
 113 /* Identifiers a style of $gp initialization sequence.
 114
 115    LOADGP_NONE
 116         No initialization sequence is needed.
 117
 118    LOADGP_OLDABI
 119         The o32 and o64 PIC sequence (the kind traditionally generated
 120         by .cpload).
 121
 122    LOADGP_NEWABI
 123         The n32 and n64 PIC sequence (the kind traditionally generated
 124         by .cpsetup).
 125
 126    LOADGP_ABSOLUTE
 127         The GNU absolute sequence, as generated by loadgp_absolute.
 128
 129    LOADGP_RTP
 130         The VxWorks RTP PIC sequence, as generated by loadgp_rtp.  */
 131 enum mips_loadgp_style {
 132   LOADGP_NONE,
 133   LOADGP_OLDABI,
 134   LOADGP_NEWABI,
 135   LOADGP_ABSOLUTE,
 136   LOADGP_RTP
 137 };
 138
 139 extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_type *);
 140 extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int);
 141 extern bool mips_stack_address_p (rtx, enum machine_mode);
 142 extern int mips_address_insns (rtx, enum machine_mode);
 143 extern int mips_const_insns (rtx);
 144 extern int mips_fetch_insns (rtx);
 145 extern int mips_idiv_insns (void);
 146 extern int fp_register_operand (rtx, enum machine_mode);
 147 extern int lo_operand (rtx, enum machine_mode);
 148 extern bool mips_legitimate_address_p (enum machine_mode, rtx, int);
 149 extern rtx mips_split_symbol (rtx, rtx);
 150 extern rtx mips_unspec_address (rtx, enum mips_symbol_type);
 151 extern bool mips_legitimize_address (rtx *, enum machine_mode);
 152 extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
 153 extern bool mips_legitimize_move (enum machine_mode, rtx, rtx);
 154
 155 extern int m16_uimm3_b (rtx, enum machine_mode);
 156 extern int m16_simm4_1 (rtx, enum machine_mode);
 157 extern int m16_nsimm4_1 (rtx, enum machine_mode);
 158 extern int m16_simm5_1 (rtx, enum machine_mode);
 159 extern int m16_nsimm5_1 (rtx, enum machine_mode);
 160 extern int m16_uimm5_4 (rtx, enum machine_mode);
 161 extern int m16_nuimm5_4 (rtx, enum machine_mode);
 162 extern int m16_simm8_1 (rtx, enum machine_mode);
 163 extern int m16_nsimm8_1 (rtx, enum machine_mode);
 164 extern int m16_uimm8_1 (rtx, enum machine_mode);
 165 extern int m16_nuimm8_1 (rtx, enum machine_mode);
 166 extern int m16_uimm8_m1_1 (rtx, enum machine_mode);
 167 extern int m16_uimm8_4 (rtx, enum machine_mode);
 168 extern int m16_nuimm8_4 (rtx, enum machine_mode);
 169 extern int m16_simm8_8 (rtx, enum machine_mode);
 170 extern int m16_nsimm8_8 (rtx, enum machine_mode);
 171
 172 extern rtx mips_subword (rtx, int);
 173 extern bool mips_split_64bit_move_p (rtx, rtx);
 174 extern void mips_split_64bit_move (rtx, rtx);
 175 extern const char *mips_output_move (rtx, rtx);
 176 extern void mips_restore_gp (void);
 177 #ifdef RTX_CODE
 178 extern bool mips_emit_scc (enum rtx_code, rtx);
 179 extern void gen_conditional_branch (rtx *, enum rtx_code);
 180 extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx);
 181 #endif
 182 extern void gen_conditional_move (rtx *);
 183 extern void mips_gen_conditional_trap (rtx *);
 184 extern void mips_expand_call (rtx, rtx, rtx, rtx, int);
 185 extern void mips_emit_fcc_reload (rtx, rtx, rtx);
 186 extern void mips_set_return_address (rtx, rtx);
 187 extern bool mips_expand_block_move (rtx, rtx, rtx);
 188
 189 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx);
 190 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode,
 191                                   tree, int);
 192 extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *,
 193                                      enum machine_mode, tree, int);
 194 extern int function_arg_boundary (enum machine_mode, tree);
 195 extern bool mips_pad_arg_upward (enum machine_mode, tree);
 196 extern bool mips_pad_reg_upward (enum machine_mode, tree);
 197 extern void mips_va_start (tree, rtx);
 198
 199 extern bool mips_expand_unaligned_load (rtx, rtx, unsigned int, int);
 200 extern bool mips_expand_unaligned_store (rtx, rtx, unsigned int, int);
 201 extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x);
 202 extern void override_options (void);
 203 extern void mips_conditional_register_usage (void);
 204 extern void mips_order_regs_for_local_alloc (void);
 205 extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT);
 206
 207 extern void print_operand (FILE *, rtx, int);
 208 extern void print_operand_address (FILE *, rtx);
 209 extern void mips_output_external (FILE *, tree, const char *);
 210 extern void mips_output_filename (FILE *, const char *);
 211 extern void mips_output_ascii (FILE *, const char *, size_t, const char *);
 212 extern void mips_output_aligned_bss (FILE *, tree, const char *,
 213                                      unsigned HOST_WIDE_INT, int);
 214 extern void mips_output_aligned_decl_common (FILE *, tree, const char *,
 215                                              unsigned HOST_WIDE_INT,
 216                                              unsigned int);
 217 extern void mips_declare_common_object (FILE *, const char *,
 218                                         const char *, unsigned HOST_WIDE_INT,
 219                                         unsigned int, bool);
 220 extern void mips_declare_object (FILE *, const char *, const char *,
 221                                  const char *, ...) ATTRIBUTE_PRINTF_4;
 222 extern void mips_declare_object_name (FILE *, const char *, tree);
 223 extern void mips_finish_declare_object (FILE *, tree, int, int);
 224
 225 extern bool mips_small_data_pattern_p (rtx);
 226 extern rtx mips_rewrite_small_data (rtx);
 227 extern HOST_WIDE_INT compute_frame_size (HOST_WIDE_INT);
 228 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int);
 229 extern rtx mips_return_addr (int, rtx);
 230 extern enum mips_loadgp_style mips_current_loadgp_style (void);
 231 extern void mips_expand_prologue (void);
 232 extern void mips_expand_epilogue (int);
 233 extern int mips_can_use_return_insn (void);
 234 extern struct rtx_def *mips_function_value (tree, tree, enum machine_mode);
 235
 236 extern bool mips_cannot_change_mode_class (enum machine_mode,
 237                                            enum machine_mode, enum reg_class);
 238 extern bool mips_dangerous_for_la25_p (rtx);
 239 extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class);
 240 extern enum reg_class mips_secondary_reload_class (enum reg_class,
 241                                                    enum machine_mode,
 242                                                    rtx, int);
 243 extern int mips_class_max_nregs (enum reg_class, enum machine_mode);
 244 extern int build_mips16_call_stub (rtx, rtx, rtx, int);
 245 extern int mips_register_move_cost (enum machine_mode, enum reg_class,
 246                                     enum reg_class);
 247
 248 extern int mips_adjust_insn_length (rtx, int);
 249 extern const char *mips_output_load_label (void);
 250 extern const char *mips_output_conditional_branch (rtx, rtx *, const char *,
 251                                                    const char *);
 252 extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool);
 253 extern const char *mips_output_division (const char *, rtx *);
 254 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode);
 255 extern bool mips_linked_madd_p (rtx, rtx);
 256 extern int mips_store_data_bypass_p (rtx, rtx);
 257 extern rtx mips_prefetch_cookie (rtx, rtx);
 258
 259 extern void irix_asm_output_align (FILE *, unsigned);
 260 extern const char *current_section_name (void);
 261 extern unsigned int current_section_flags (void);
 262 extern bool mips_use_ins_ext_p (rtx, rtx, rtx);
 263
 264 #endif /* ! GCC_MIPS_PROTOS_H */