1 /* Prototypes of target machine for GNU compiler. MIPS version.
2 Copyright (C) 1989-2022 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_insn
*);
202 extern int mips_idiv_insns (machine_mode
);
203 extern rtx_insn
*mips_emit_move (rtx
, rtx
);
205 extern void mips_emit_binary (enum rtx_code
, rtx
, rtx
, rtx
);
207 extern rtx
mips_pic_base_register (rtx
);
208 extern rtx
mips_got_load (rtx
, rtx
, enum mips_symbol_type
);
209 extern bool mips_split_symbol (rtx
, rtx
, machine_mode
, rtx
*);
210 extern rtx
mips_unspec_address (rtx
, enum mips_symbol_type
);
211 extern rtx
mips_strip_unspec_address (rtx
);
212 extern void mips_move_integer (rtx
, rtx
, unsigned HOST_WIDE_INT
);
213 extern bool mips_legitimize_move (machine_mode
, rtx
, rtx
);
215 extern rtx
mips_subword (rtx
, bool);
216 extern bool mips_split_move_p (rtx
, rtx
, enum mips_split_type
);
217 extern void mips_split_move (rtx
, rtx
, enum mips_split_type
, rtx
);
218 extern bool mips_split_move_insn_p (rtx
, rtx
, rtx
);
219 extern void mips_split_move_insn (rtx
, rtx
, rtx
);
220 extern void mips_split_128bit_move (rtx
, rtx
);
221 extern bool mips_split_128bit_move_p (rtx
, rtx
);
222 extern void mips_split_msa_copy_d (rtx
, rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
223 extern void mips_split_msa_insert_d (rtx
, rtx
, rtx
, rtx
);
224 extern void mips_split_msa_fill_d (rtx
, rtx
);
225 extern const char *mips_output_move (rtx
, rtx
);
226 extern bool mips_cfun_has_cprestore_slot_p (void);
227 extern bool mips_cprestore_address_p (rtx
, bool);
228 extern void mips_save_gp_to_cprestore_slot (rtx
, rtx
, rtx
, rtx
);
229 extern void mips_restore_gp_from_cprestore_slot (rtx
);
231 extern void mips_expand_scc (rtx
*);
232 extern void mips_expand_conditional_branch (rtx
*);
233 extern void mips_expand_vcondv2sf (rtx
, rtx
, rtx
, enum rtx_code
, rtx
, rtx
);
234 extern void mips_expand_conditional_move (rtx
*);
235 extern void mips_expand_conditional_trap (rtx
);
237 extern bool mips_use_pic_fn_addr_reg_p (const_rtx
);
238 extern rtx_insn
*mips_expand_call (enum mips_call_type
, rtx
, rtx
, rtx
, rtx
,
240 extern void mips_split_call (rtx
, rtx
);
241 extern bool mips_get_pic_call_symbol (rtx
*, int);
242 extern void mips_set_return_address (rtx
, rtx
);
243 extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
244 extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
245 extern bool mips_expand_block_move (rtx
, rtx
, rtx
);
246 extern void mips_expand_synci_loop (rtx
, rtx
);
248 extern void mips_init_cumulative_args (CUMULATIVE_ARGS
*, tree
);
249 extern bool mips_pad_reg_upward (machine_mode
, tree
);
251 extern bool mips_expand_ext_as_unaligned_load (rtx
, rtx
, HOST_WIDE_INT
,
252 HOST_WIDE_INT
, bool);
253 extern bool mips_expand_ins_as_unaligned_store (rtx
, rtx
, HOST_WIDE_INT
,
255 extern bool mips_mem_fits_mode_p (machine_mode mode
, rtx x
);
256 extern HOST_WIDE_INT
mips_debugger_offset (rtx
, HOST_WIDE_INT
);
258 extern void mips_push_asm_switch (struct mips_asm_switch
*);
259 extern void mips_pop_asm_switch (struct mips_asm_switch
*);
260 extern void mips_output_external (FILE *, tree
, const char *);
261 extern void mips_output_ascii (FILE *, const char *, size_t);
262 extern const char *mips_output_tls_reloc_directive (rtx
*);
263 extern void mips_output_aligned_decl_common (FILE *, tree
, const char *,
264 unsigned HOST_WIDE_INT
,
266 extern void mips_declare_common_object (FILE *, const char *,
267 const char *, unsigned HOST_WIDE_INT
,
269 extern void mips_declare_object (FILE *, const char *, const char *,
270 const char *, ...) ATTRIBUTE_PRINTF_4
;
271 extern void mips_declare_object_name (FILE *, const char *, tree
);
272 extern void mips_finish_declare_object (FILE *, tree
, int, int);
273 extern void mips_set_text_contents_type (FILE *, const char *,
274 unsigned long, bool);
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);
288 extern bool mips_const_vector_same_val_p (rtx
, machine_mode
);
289 extern bool mips_const_vector_same_bytes_p (rtx
, machine_mode
);
290 extern bool mips_const_vector_same_int_p (rtx
, machine_mode
, HOST_WIDE_INT
,
292 extern bool mips_const_vector_shuffle_set_p (rtx
, machine_mode
);
293 extern bool mips_const_vector_bitimm_set_p (rtx
, machine_mode
);
294 extern bool mips_const_vector_bitimm_clr_p (rtx
, machine_mode
);
295 extern rtx
mips_msa_vec_parallel_const_half (machine_mode
, bool);
296 extern rtx
mips_gen_const_int_vector (machine_mode
, HOST_WIDE_INT
);
297 extern bool mips_dangerous_for_la25_p (rtx
);
298 extern enum reg_class
mips_secondary_reload_class (enum reg_class
,
301 extern int mips_class_max_nregs (enum reg_class
, machine_mode
);
303 extern machine_mode
mips_hard_regno_caller_save_mode (unsigned int,
306 extern int mips_adjust_insn_length (rtx_insn
*, int);
307 extern void mips_output_load_label (rtx
);
308 extern const char *mips_output_conditional_branch (rtx_insn
*, rtx
*,
309 const char *, const char *);
310 extern const char *mips_output_order_conditional_branch (rtx_insn
*, rtx
*,
312 extern const char *mips_output_equal_conditional_branch (rtx_insn
*, rtx
*,
314 extern const char *mips_output_jump (rtx
*, int, int, bool);
315 extern const char *mips_output_sync (void);
316 extern const char *mips_output_sync_loop (rtx_insn
*, rtx
*);
317 extern unsigned int mips_sync_loop_insns (rtx_insn
*, rtx
*);
318 extern const char *mips_output_division (const char *, rtx
*);
319 extern const char *mips_msa_output_division (const char *, rtx
*);
320 extern const char *mips_msa_output_shift_immediate (const char *, rtx
*);
321 extern const char *mips_output_probe_stack_range (rtx
, rtx
);
322 extern bool mips_hard_regno_rename_ok (unsigned int, unsigned int);
323 extern bool mips_linked_madd_p (rtx_insn
*, rtx_insn
*);
324 extern bool mips_store_data_bypass_p (rtx_insn
*, rtx_insn
*);
325 extern int mips_dspalu_bypass_p (rtx
, rtx
);
326 extern rtx
mips_prefetch_cookie (rtx
, rtx
);
327 extern rtx
mips_loongson_ext2_prefetch_cookie (rtx
, rtx
);
329 extern const char *current_section_name (void);
330 extern unsigned int current_section_flags (void);
331 extern bool mips_use_ins_ext_p (rtx
, HOST_WIDE_INT
, HOST_WIDE_INT
);
333 extern const char *mips16e_output_save_restore (rtx
, HOST_WIDE_INT
);
334 extern bool mips16e_save_restore_pattern_p (rtx
, HOST_WIDE_INT
,
335 struct mips16e_save_restore_info
*);
337 extern bool mask_low_and_shift_p (machine_mode
, rtx
, rtx
, int);
338 extern int mask_low_and_shift_len (machine_mode
, rtx
, rtx
);
339 extern bool and_operands_ok (machine_mode
, rtx
, rtx
);
340 extern bool mips_fmadd_bypass (rtx_insn
*, rtx_insn
*);
342 union mips_gen_fn_ptrs
344 rtx (*fn_6
) (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
);
345 rtx (*fn_5
) (rtx
, rtx
, rtx
, rtx
, rtx
);
346 rtx (*fn_4
) (rtx
, rtx
, rtx
, rtx
);
349 extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs
,
352 extern void mips_expand_vector_init (rtx
, rtx
);
353 extern void mips_expand_vec_unpack (rtx op
[2], bool, bool);
354 extern void mips_expand_vec_reduc (rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
355 extern void mips_expand_vec_minmax (rtx
, rtx
, rtx
,
356 rtx (*) (rtx
, rtx
, rtx
), bool);
358 extern int mips_ldst_scaled_shift (machine_mode
);
359 extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT
, int, int);
360 extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT
, int, int);
361 extern const char *umips_output_save_restore (bool, rtx
);
362 extern bool umips_save_restore_pattern_p (bool, rtx
);
363 extern bool umips_load_store_pair_p (bool, rtx
*);
364 extern void umips_output_load_store_pair (bool, rtx
*);
365 extern bool umips_movep_target_p (rtx
, rtx
);
366 extern bool umips_12bit_offset_address_p (rtx
, machine_mode
);
367 extern bool mips_9bit_offset_address_p (rtx
, machine_mode
);
368 extern bool lwsp_swsp_address_p (rtx
, machine_mode
);
369 extern bool m16_based_address_p (rtx
, machine_mode
,
370 bool (*)(rtx_def
*, machine_mode
));
371 extern rtx
mips_expand_thread_pointer (rtx
);
372 extern void mips16_expand_get_fcsr (rtx
);
373 extern void mips16_expand_set_fcsr (rtx
);
375 extern bool mips_eh_uses (unsigned int);
376 extern bool mips_epilogue_uses (unsigned int);
377 extern void mips_final_prescan_insn (rtx_insn
*, rtx
*, int);
378 extern int mips_trampoline_code_size (void);
379 extern void mips_function_profiler (FILE *);
380 extern bool mips_load_store_bonding_p (rtx
*, machine_mode
, bool);
382 typedef rtx (*mulsidi3_gen_fn
) (rtx
, rtx
, rtx
);
384 extern mulsidi3_gen_fn
mips_mulsidi3_gen_fn (enum rtx_code
);
387 extern void mips_register_frame_header_opt (void);
388 extern void mips_expand_vec_cond_expr (machine_mode
, machine_mode
, rtx
*);
389 extern void mips_expand_vec_cmp_expr (rtx
*);
391 /* Routines implemented in mips-d.c */
392 extern void mips_d_target_versions (void);
393 extern void mips_d_register_target_info (void);
395 #endif /* ! GCC_MIPS_PROTOS_H */