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_LOCAL 41 The symbol refers to local data that will be found using 42 the global offset table. 43 44 SYMBOL_GOT_GLOBAL 45 Likewise non-local data. 46 47 SYMBOL_GOTOFF_PAGE 48 An UNSPEC wrapper around a SYMBOL_GOT_LOCAL. It represents the 49 offset from _gp of a GOT page entry. 50 51 SYMBOL_GOTOFF_GLOBAL 52 An UNSPEC wrapper around a SYMBOL_GOT_GLOBAL. It represents the 53 the offset from _gp of the symbol's GOT entry. 54 55 SYMBOL_GOTOFF_CALL 56 Like SYMBOL_GOTOFF_GLOBAL, 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 enum mips_symbol_type { 87 SYMBOL_GENERAL, 88 SYMBOL_SMALL_DATA, 89 SYMBOL_CONSTANT_POOL, 90 SYMBOL_GOT_LOCAL, 91 SYMBOL_GOT_GLOBAL, 92 SYMBOL_GOTOFF_PAGE, 93 SYMBOL_GOTOFF_GLOBAL, 94 SYMBOL_GOTOFF_CALL, 95 SYMBOL_GOTOFF_LOADGP, 96 SYMBOL_TLS, 97 SYMBOL_TLSGD, 98 SYMBOL_TLSLDM, 99 SYMBOL_DTPREL, 100 SYMBOL_GOTTPREL, 101 SYMBOL_TPREL, 102 SYMBOL_64_HIGH, 103 SYMBOL_64_MID, 104 SYMBOL_64_LOW 105 }; 106 #define NUM_SYMBOL_TYPES (SYMBOL_64_LOW + 1) 107 108 /* Identifiers a style of $gp initialization sequence. 109 110 LOADGP_NONE 111 No initialization sequence is needed. 112 113 LOADGP_OLDABI 114 The o32 and o64 PIC sequence (the kind traditionally generated 115 by .cpload). 116 117 LOADGP_NEWABI 118 The n32 and n64 PIC sequence (the kind traditionally generated 119 by .cpsetup). 120 121 LOADGP_ABSOLUTE 122 The GNU absolute sequence, as generated by loadgp_noshared. */ 123 enum mips_loadgp_style { 124 LOADGP_NONE, 125 LOADGP_OLDABI, 126 LOADGP_NEWABI, 127 LOADGP_ABSOLUTE 128 }; 129 130 extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_type *); 131 extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, int); 132 extern bool mips_stack_address_p (rtx, enum machine_mode); 133 extern int mips_address_insns (rtx, enum machine_mode); 134 extern int mips_const_insns (rtx); 135 extern int mips_fetch_insns (rtx); 136 extern int mips_idiv_insns (void); 137 extern int fp_register_operand (rtx, enum machine_mode); 138 extern int lo_operand (rtx, enum machine_mode); 139 extern bool mips_legitimate_address_p (enum machine_mode, rtx, int); 140 extern rtx mips_split_symbol (rtx, rtx); 141 extern rtx mips_unspec_address (rtx, enum mips_symbol_type); 142 extern bool mips_legitimize_address (rtx *, enum machine_mode); 143 extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT); 144 extern bool mips_legitimize_move (enum machine_mode, rtx, rtx); 145 146 extern int m16_uimm3_b (rtx, enum machine_mode); 147 extern int m16_simm4_1 (rtx, enum machine_mode); 148 extern int m16_nsimm4_1 (rtx, enum machine_mode); 149 extern int m16_simm5_1 (rtx, enum machine_mode); 150 extern int m16_nsimm5_1 (rtx, enum machine_mode); 151 extern int m16_uimm5_4 (rtx, enum machine_mode); 152 extern int m16_nuimm5_4 (rtx, enum machine_mode); 153 extern int m16_simm8_1 (rtx, enum machine_mode); 154 extern int m16_nsimm8_1 (rtx, enum machine_mode); 155 extern int m16_uimm8_1 (rtx, enum machine_mode); 156 extern int m16_nuimm8_1 (rtx, enum machine_mode); 157 extern int m16_uimm8_m1_1 (rtx, enum machine_mode); 158 extern int m16_uimm8_4 (rtx, enum machine_mode); 159 extern int m16_nuimm8_4 (rtx, enum machine_mode); 160 extern int m16_simm8_8 (rtx, enum machine_mode); 161 extern int m16_nsimm8_8 (rtx, enum machine_mode); 162 163 extern rtx mips_subword (rtx, int); 164 extern bool mips_split_64bit_move_p (rtx, rtx); 165 extern void mips_split_64bit_move (rtx, rtx); 166 extern const char *mips_output_move (rtx, rtx); 167 extern void mips_restore_gp (void); 168 #ifdef RTX_CODE 169 extern bool mips_emit_scc (enum rtx_code, rtx); 170 extern void gen_conditional_branch (rtx *, enum rtx_code); 171 extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx); 172 #endif 173 extern void gen_conditional_move (rtx *); 174 extern void mips_gen_conditional_trap (rtx *); 175 extern void mips_expand_call (rtx, rtx, rtx, rtx, int); 176 extern void mips_emit_fcc_reload (rtx, rtx, rtx); 177 extern void mips_set_return_address (rtx, rtx); 178 extern bool mips_expand_block_move (rtx, rtx, rtx); 179 180 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx); 181 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, 182 tree, int); 183 extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *, 184 enum machine_mode, tree, int); 185 extern int function_arg_boundary (enum machine_mode, tree); 186 extern bool mips_pad_arg_upward (enum machine_mode, tree); 187 extern bool mips_pad_reg_upward (enum machine_mode, tree); 188 extern void mips_va_start (tree, rtx); 189 190 extern bool mips_expand_unaligned_load (rtx, rtx, unsigned int, int); 191 extern bool mips_expand_unaligned_store (rtx, rtx, unsigned int, int); 192 extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x); 193 extern void override_options (void); 194 extern void mips_conditional_register_usage (void); 195 extern void mips_order_regs_for_local_alloc (void); 196 extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT); 197 198 extern void print_operand (FILE *, rtx, int); 199 extern void print_operand_address (FILE *, rtx); 200 extern int mips_output_external (FILE *, tree, const char *); 201 extern void mips_output_filename (FILE *, const char *); 202 extern void mips_output_ascii (FILE *, const char *, size_t, const char *); 203 extern void mips_output_aligned_bss (FILE *, tree, const char *, 204 unsigned HOST_WIDE_INT, int); 205 extern void mips_output_aligned_decl_common (FILE *, tree, const char *, 206 unsigned HOST_WIDE_INT, 207 unsigned int); 208 extern void mips_declare_common_object (FILE *, const char *, 209 const char *, unsigned HOST_WIDE_INT, 210 unsigned int, bool); 211 extern void mips_declare_object (FILE *, const char *, const char *, 212 const char *, ...) ATTRIBUTE_PRINTF_4; 213 extern void mips_declare_object_name (FILE *, const char *, tree); 214 extern void mips_finish_declare_object (FILE *, tree, int, int); 215 216 extern bool mips_small_data_pattern_p (rtx); 217 extern rtx mips_rewrite_small_data (rtx); 218 extern HOST_WIDE_INT compute_frame_size (HOST_WIDE_INT); 219 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int); 220 extern rtx mips_return_addr (int, rtx); 221 extern enum mips_loadgp_style mips_current_loadgp_style (void); 222 extern void mips_expand_prologue (void); 223 extern void mips_expand_epilogue (int); 224 extern int mips_can_use_return_insn (void); 225 extern struct rtx_def *mips_function_value (tree, tree, enum machine_mode); 226 227 extern bool mips_cannot_change_mode_class (enum machine_mode, 228 enum machine_mode, enum reg_class); 229 extern bool mips_dangerous_for_la25_p (rtx); 230 extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class); 231 extern enum reg_class mips_secondary_reload_class (enum reg_class, 232 enum machine_mode, 233 rtx, int); 234 extern int mips_class_max_nregs (enum reg_class, enum machine_mode); 235 extern int build_mips16_call_stub (rtx, rtx, rtx, int); 236 extern int mips_register_move_cost (enum machine_mode, enum reg_class, 237 enum reg_class); 238 239 extern int mips_adjust_insn_length (rtx, int); 240 extern const char *mips_output_load_label (void); 241 extern const char *mips_output_conditional_branch (rtx, rtx *, const char *, 242 const char *); 243 extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool); 244 extern const char *mips_output_division (const char *, rtx *); 245 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode); 246 extern bool mips_linked_madd_p (rtx, rtx); 247 extern int mips_store_data_bypass_p (rtx, rtx); 248 extern rtx mips_prefetch_cookie (rtx, rtx); 249 250 extern void irix_asm_output_align (FILE *, unsigned); 251 extern const char *current_section_name (void); 252 extern unsigned int current_section_flags (void); 253 extern bool mips_use_ins_ext_p (rtx, rtx, rtx); 254 255 #endif /* ! GCC_MIPS_PROTOS_H */ 256