1 /* Prototypes of target machine for GNU compiler. MIPS version.
2 Copyright (C) 1989-2014 Free Software Foundation, Inc.
3 Contributed by A. Lichnewsky (lich@inria.inria.fr).
4 Changed by Michael Meissner (meissner@osf.org).
5 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and
6 Brendan Eich (brendan@microunity.com).
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
15 GCC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING3. If not see
22 <http://www.gnu.org/licenses/>. */
24 #ifndef GCC_MIPS_PROTOS_H
25 #define GCC_MIPS_PROTOS_H
27 /* Describes how a symbol is used.
30 The symbol is used as the target of a call instruction.
33 The symbol is used in a load-address operation.
36 The symbol is used as the address in a MEM. */
37 enum mips_symbol_context
{
43 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
46 The symbol's value will be calculated using absolute relocations,
50 The symbol's value will be calculated by adding a 16-bit offset
54 The symbol's value will be calculated using a MIPS16 PC-relative
58 The symbol's value will be calculated by loading an address
59 from the GOT and then applying a 16-bit offset.
62 The symbol's value will be loaded directly from the GOT.
65 An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST. It represents the
66 offset from _gp of the GOT entry.
69 An UNSPEC wrapper around a SYMBOL_GOT_DISP. It represents the
70 offset from _gp of the symbol's GOT entry.
73 Like SYMBOL_GOTOFF_DISP, but used when calling a global function.
74 The GOT entry is allowed to point to a stub rather than to the
78 An UNSPEC wrapper around a function's address. It represents the
79 offset of _gp from the start of the function.
82 A thread-local symbol.
89 UNSPEC wrappers around SYMBOL_TLS, corresponding to the
90 thread-local storage relocation operators.
93 For a 64-bit symbolic address X, this is the value of
94 (%highest(X) << 16) + %higher(X).
97 For a 64-bit symbolic address X, this is the value of
98 (%higher(X) << 16) + %hi(X).
101 For a 64-bit symbolic address X, this is the value of
102 (%hi(X) << 16) + %lo(X).
105 An UNSPEC wrapper around any kind of address. It represents the
106 low 16 bits of that address. */
107 enum mips_symbol_type
{
111 SYMBOL_GOT_PAGE_OFST
,
116 SYMBOL_GOTOFF_LOADGP
,
128 #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1)
130 /* Identifiers a style of $gp initialization sequence.
133 No initialization sequence is needed.
136 The o32 and o64 PIC sequence (the kind traditionally generated
140 The n32 and n64 PIC sequence (the kind traditionally generated
144 The GNU absolute sequence, as generated by loadgp_absolute.
147 The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */
148 enum mips_loadgp_style
{
156 struct mips16e_save_restore_info
;
158 /* Classifies a type of call.
161 A normal call or call_value pattern.
164 A sibcall or sibcall_value pattern.
167 A call inserted in the epilogue. */
168 enum mips_call_type
{
174 /* Controls the conditions under which certain instructions are split.
177 Only perform splits that are necessary for correctness
178 (because no unsplit version exists).
181 Perform splits that are necessary for correctness or
182 beneficial for code speed.
185 Perform splits that are necessary for correctness or
186 beneficial for code size. */
187 enum mips_split_type
{
193 extern bool mips_symbolic_constant_p (rtx
, enum mips_symbol_context
,
194 enum mips_symbol_type
*);
195 extern int mips_regno_mode_ok_for_base_p (int, machine_mode
, bool);
196 extern bool mips_stack_address_p (rtx
, machine_mode
);
197 extern int mips_address_insns (rtx
, machine_mode
, bool);
198 extern int mips_const_insns (rtx
);
199 extern int mips_split_const_insns (rtx
);
200 extern int mips_split_128bit_const_insns (rtx
);
201 extern int mips_load_store_insns (rtx
, rtx
);
202 extern int mips_idiv_insns (void);
203 extern int mips_msa_idiv_insns (void);
204 extern rtx
mips_emit_move (rtx
, rtx
);
206 extern void mips_emit_binary (enum rtx_code
, rtx
, rtx
, rtx
);
208 extern rtx
mips_pic_base_register (rtx
);
209 extern rtx
mips_got_load (rtx
, rtx
, enum mips_symbol_type
);
210 extern bool mips_split_symbol (rtx
, rtx
, machine_mode
, rtx
*);
211 extern rtx
mips_unspec_address (rtx
, enum mips_symbol_type
);
212 extern rtx
mips_strip_unspec_address (rtx
);
213 extern void mips_move_integer (rtx
, rtx
, unsigned HOST_WIDE_INT
);
214 extern bool mips_legitimize_move (machine_mode
, rtx
, rtx
);
216 extern rtx
mips_subword (rtx
, bool);
217 extern bool mips_split_move_p (rtx
, rtx
, enum mips_split_type
);
218 extern void mips_split_move (rtx
, rtx
, enum mips_split_type
);
219 extern bool mips_split_move_insn_p (rtx
, rtx
, rtx
);
220 extern void mips_split_move_insn (rtx
, rtx
, rtx
);
221 extern void mips_split_128bit_move (rtx
, rtx
);
222 extern bool mips_split_128bit_move_p (rtx
, rtx
);
223 extern void mips_split_msa_copy_d (rtx
, rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
224 extern void mips_split_msa_insert_d (rtx
, rtx
, rtx
, rtx
);
225 extern void mips_split_msa_fill_d (rtx
, rtx
);
226 extern const char *mips_output_move (rtx
, rtx
);
227 extern bool mips_cfun_has_cprestore_slot_p (void);
228 extern bool mips_cprestore_address_p (rtx
, bool);
229 extern void mips_save_gp_to_cprestore_slot (rtx
, rtx
, rtx
, rtx
);
230 extern void mips_restore_gp_from_cprestore_slot (rtx
);
231 extern void mips_expand_scc (rtx
*);
232 extern void mips_expand_conditional_branch (rtx
*);
234 extern void mips_expand_vcondv2sf (rtx
, rtx
, rtx
, enum rtx_code
, rtx
, rtx
);
236 extern void mips_expand_conditional_move (rtx
*);
237 extern void mips_expand_conditional_trap (rtx
);
238 extern void mips_expand_msa_branch (rtx
*operands
, rtx (*gen_fn
)(rtx
, rtx
, rtx
));
239 extern bool mips_use_pic_fn_addr_reg_p (const_rtx
);
240 extern rtx
mips_expand_call (enum mips_call_type
, rtx
, rtx
, rtx
, rtx
, bool);
241 extern void mips_split_call (rtx
, rtx
);
242 extern bool mips_get_pic_call_symbol (rtx
*, int);
243 extern void mips_set_return_address (rtx
, rtx
);
244 extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
245 extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
246 extern bool mips_expand_block_move (rtx
, rtx
, rtx
);
247 extern void mips_expand_synci_loop (rtx
, rtx
);
249 extern void mips_init_cumulative_args (CUMULATIVE_ARGS
*, tree
);
250 extern bool mips_pad_arg_upward (machine_mode
, const_tree
);
251 extern bool mips_pad_reg_upward (machine_mode
, tree
);
253 extern bool mips_expand_ext_as_unaligned_load (rtx
, rtx
, HOST_WIDE_INT
,
254 HOST_WIDE_INT
, bool);
255 extern bool mips_expand_ins_as_unaligned_store (rtx
, rtx
, HOST_WIDE_INT
,
257 extern bool mips_mem_fits_mode_p (machine_mode mode
, rtx x
);
258 extern HOST_WIDE_INT
mips_debugger_offset (rtx
, HOST_WIDE_INT
);
260 extern void mips_push_asm_switch (struct mips_asm_switch
*);
261 extern void mips_pop_asm_switch (struct mips_asm_switch
*);
262 extern void mips_output_external (FILE *, tree
, const char *);
263 extern void mips_output_ascii (FILE *, const char *, size_t);
264 extern const char *mips_output_tls_reloc_directive (rtx
*);
265 extern void mips_output_aligned_decl_common (FILE *, tree
, const char *,
266 unsigned HOST_WIDE_INT
,
268 extern void mips_declare_common_object (FILE *, const char *,
269 const char *, unsigned HOST_WIDE_INT
,
271 extern void mips_declare_object (FILE *, const char *, const char *,
272 const char *, ...) ATTRIBUTE_PRINTF_4
;
273 extern void mips_declare_object_name (FILE *, const char *, tree
);
274 extern void mips_finish_declare_object (FILE *, tree
, int, int);
276 extern bool mips_small_data_pattern_p (rtx
);
277 extern rtx
mips_rewrite_small_data (rtx
);
278 extern HOST_WIDE_INT
mips_initial_elimination_offset (int, int);
279 extern rtx
mips_return_addr (int, rtx
);
280 extern bool mips_must_initialize_gp_p (void);
281 extern enum mips_loadgp_style
mips_current_loadgp_style (void);
282 extern void mips_emit_save_slot_move (rtx
, rtx
, rtx
);
283 extern void mips_expand_prologue (void);
284 extern void mips_expand_before_return (void);
285 extern void mips_expand_epilogue (bool);
286 extern bool mips_can_use_return_insn (void);
287 extern bool mips_const_vector_same_val_p (rtx
, machine_mode
);
288 extern bool mips_const_vector_same_byte_p (rtx
, machine_mode
);
289 extern bool mips_const_vector_same_int_p (rtx
, machine_mode
, HOST_WIDE_INT
,
291 extern bool mips_const_vector_bitimm_set_p (rtx
, machine_mode
);
292 extern bool mips_const_vector_bitimm_clr_p (rtx
, machine_mode
);
293 extern bool mips_secondary_memory_needed (enum reg_class
, enum reg_class
,
295 extern bool mips_cannot_change_mode_class (machine_mode
,
296 machine_mode
, enum reg_class
);
297 extern bool mips_dangerous_for_la25_p (rtx
);
298 extern bool mips_modes_tieable_p (machine_mode
, machine_mode
);
299 extern enum reg_class
mips_secondary_reload_class (enum reg_class
,
302 extern int mips_class_max_nregs (enum reg_class
, machine_mode
);
304 extern machine_mode
mips_hard_regno_caller_save_mode (unsigned int,
307 extern int mips_adjust_insn_length (rtx
, int);
308 extern void mips_output_load_label (rtx
);
309 extern const char *mips_output_conditional_branch (rtx
, rtx
*, const char *,
311 extern const char *mips_output_jump (rtx
*, int, int, bool);
312 extern const char *mips_output_equal_conditional_branch (rtx
, rtx
*, bool);
313 extern const char *mips_output_order_conditional_branch (rtx
, rtx
*, bool);
314 extern const char *mips_output_sync (void);
315 extern const char *mips_output_sync_loop (rtx
, rtx
*);
316 extern unsigned int mips_sync_loop_insns (rtx
, rtx
*);
317 extern const char *mips_output_division (const char *, rtx
*);
318 extern const char *mips_msa_output_division (const char *, rtx
*);
319 extern const char *mips_output_probe_stack_range (rtx
, rtx
);
320 extern unsigned int mips_hard_regno_nregs (int, machine_mode
);
321 extern bool mips_linked_madd_p (rtx
, rtx
);
322 extern bool mips_store_data_bypass_p (rtx
, rtx
);
323 extern int mips_dspalu_bypass_p (rtx
, rtx
);
324 extern rtx
mips_prefetch_cookie (rtx
, rtx
);
326 extern const char *current_section_name (void);
327 extern unsigned int current_section_flags (void);
328 extern bool mips_use_ins_ext_p (rtx
, HOST_WIDE_INT
, HOST_WIDE_INT
);
330 extern const char *mips16e_output_save_restore (rtx
, HOST_WIDE_INT
);
331 extern bool mips16e_save_restore_pattern_p (rtx
, HOST_WIDE_INT
,
332 struct mips16e_save_restore_info
*);
334 extern bool mask_low_and_shift_p (machine_mode
, rtx
, rtx
, int);
335 extern int mask_low_and_shift_len (machine_mode
, rtx
, rtx
);
336 extern bool and_operands_ok (machine_mode
, rtx
, rtx
);
337 extern bool mips_fmadd_bypass (rtx
, rtx
);
339 union mips_gen_fn_ptrs
341 rtx (*fn_6
) (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
);
342 rtx (*fn_5
) (rtx
, rtx
, rtx
, rtx
, rtx
);
343 rtx (*fn_4
) (rtx
, rtx
, rtx
, rtx
);
346 extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs
,
349 extern void mips_expand_vector_init (rtx
, rtx
);
350 extern bool mips_expand_vec_perm_const (rtx op
[4]);
351 extern void mips_expand_vec_unpack (rtx op
[2], bool, bool);
352 extern void mips_expand_vec_reduc (rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
353 extern void mips_expand_vec_minmax (rtx
, rtx
, rtx
,
354 rtx (*) (rtx
, rtx
, rtx
), bool);
356 extern int mips_ldst_scaled_shift (machine_mode
);
357 extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT
, int, int);
358 extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT
, int, int);
359 extern const char *umips_output_save_restore (bool, rtx
);
360 extern bool umips_save_restore_pattern_p (bool, rtx
);
361 extern bool umips_load_store_pair_p (bool, rtx
*);
362 extern void umips_output_load_store_pair (bool, rtx
*);
363 extern bool umips_movep_target_p (rtx
, rtx
);
364 extern bool umips_12bit_offset_address_p (rtx
, machine_mode
);
365 extern bool mips_9bit_offset_address_p (rtx
, machine_mode
);
366 extern bool lwsp_swsp_address_p (rtx
, machine_mode
);
367 extern bool m16_based_address_p (rtx
, machine_mode
,
368 int (*)(rtx_def
*, machine_mode
));
369 extern rtx
mips_expand_thread_pointer (rtx
);
370 extern void mips16_expand_get_fcsr (rtx
);
371 extern void mips16_expand_set_fcsr (rtx
);
373 extern bool mips_eh_uses (unsigned int);
374 extern bool mips_epilogue_uses (unsigned int);
375 extern void mips_final_prescan_insn (rtx
, rtx
*, int);
376 extern int mips_trampoline_code_size (void);
377 extern void mips_function_profiler (FILE *);
378 extern bool mips_load_store_bonding_p (rtx
*, machine_mode
, bool);
380 typedef rtx (*mulsidi3_gen_fn
) (rtx
, rtx
, rtx
);
382 extern mulsidi3_gen_fn
mips_mulsidi3_gen_fn (enum rtx_code
);
385 extern void mips_expand_vec_cond_expr (machine_mode
,
388 rtx (*)(rtx
, rtx
, rtx
),
389 rtx (*)(rtx
, rtx
, rtx
),
390 rtx (*)(rtx
, rtx
, rtx
));
392 #endif /* ! GCC_MIPS_PROTOS_H */