1 /* Prototypes of target machine for GNU compiler. MIPS version.
2 Copyright (C) 1989-2015 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_load_store_insns (rtx
, rtx_insn
*);
201 extern int mips_idiv_insns (void);
202 extern rtx_insn
*mips_emit_move (rtx
, rtx
);
204 extern void mips_emit_binary (enum rtx_code
, rtx
, rtx
, rtx
);
206 extern rtx
mips_pic_base_register (rtx
);
207 extern rtx
mips_got_load (rtx
, rtx
, enum mips_symbol_type
);
208 extern bool mips_split_symbol (rtx
, rtx
, machine_mode
, rtx
*);
209 extern rtx
mips_unspec_address (rtx
, enum mips_symbol_type
);
210 extern rtx
mips_strip_unspec_address (rtx
);
211 extern void mips_move_integer (rtx
, rtx
, unsigned HOST_WIDE_INT
);
212 extern bool mips_legitimize_move (machine_mode
, rtx
, rtx
);
214 extern rtx
mips_subword (rtx
, bool);
215 extern bool mips_split_move_p (rtx
, rtx
, enum mips_split_type
);
216 extern void mips_split_move (rtx
, rtx
, enum mips_split_type
);
217 extern bool mips_split_move_insn_p (rtx
, rtx
, rtx
);
218 extern void mips_split_move_insn (rtx
, rtx
, rtx
);
219 extern const char *mips_output_move (rtx
, rtx
);
220 extern bool mips_cfun_has_cprestore_slot_p (void);
221 extern bool mips_cprestore_address_p (rtx
, bool);
222 extern void mips_save_gp_to_cprestore_slot (rtx
, rtx
, rtx
, rtx
);
223 extern void mips_restore_gp_from_cprestore_slot (rtx
);
225 extern void mips_expand_scc (rtx
*);
226 extern void mips_expand_conditional_branch (rtx
*);
227 extern void mips_expand_vcondv2sf (rtx
, rtx
, rtx
, enum rtx_code
, rtx
, rtx
);
228 extern void mips_expand_conditional_move (rtx
*);
229 extern void mips_expand_conditional_trap (rtx
);
231 extern bool mips_use_pic_fn_addr_reg_p (const_rtx
);
232 extern rtx_insn
*mips_expand_call (enum mips_call_type
, rtx
, rtx
, rtx
, rtx
,
234 extern void mips_split_call (rtx
, rtx
);
235 extern bool mips_get_pic_call_symbol (rtx
*, int);
236 extern void mips_set_return_address (rtx
, rtx
);
237 extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
238 extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
239 extern bool mips_expand_block_move (rtx
, rtx
, rtx
);
240 extern void mips_expand_synci_loop (rtx
, rtx
);
242 extern void mips_init_cumulative_args (CUMULATIVE_ARGS
*, tree
);
243 extern bool mips_pad_arg_upward (machine_mode
, const_tree
);
244 extern bool mips_pad_reg_upward (machine_mode
, tree
);
246 extern bool mips_expand_ext_as_unaligned_load (rtx
, rtx
, HOST_WIDE_INT
,
247 HOST_WIDE_INT
, bool);
248 extern bool mips_expand_ins_as_unaligned_store (rtx
, rtx
, HOST_WIDE_INT
,
250 extern bool mips_mem_fits_mode_p (machine_mode mode
, rtx x
);
251 extern HOST_WIDE_INT
mips_debugger_offset (rtx
, HOST_WIDE_INT
);
253 extern void mips_push_asm_switch (struct mips_asm_switch
*);
254 extern void mips_pop_asm_switch (struct mips_asm_switch
*);
255 extern void mips_output_external (FILE *, tree
, const char *);
256 extern void mips_output_ascii (FILE *, const char *, size_t);
257 extern const char *mips_output_tls_reloc_directive (rtx
*);
258 extern void mips_output_aligned_decl_common (FILE *, tree
, const char *,
259 unsigned HOST_WIDE_INT
,
261 extern void mips_declare_common_object (FILE *, const char *,
262 const char *, unsigned HOST_WIDE_INT
,
264 extern void mips_declare_object (FILE *, const char *, const char *,
265 const char *, ...) ATTRIBUTE_PRINTF_4
;
266 extern void mips_declare_object_name (FILE *, const char *, tree
);
267 extern void mips_finish_declare_object (FILE *, tree
, int, int);
269 extern bool mips_small_data_pattern_p (rtx
);
270 extern rtx
mips_rewrite_small_data (rtx
);
271 extern HOST_WIDE_INT
mips_initial_elimination_offset (int, int);
272 extern rtx
mips_return_addr (int, rtx
);
273 extern bool mips_must_initialize_gp_p (void);
274 extern enum mips_loadgp_style
mips_current_loadgp_style (void);
275 extern void mips_emit_save_slot_move (rtx
, rtx
, rtx
);
276 extern void mips_expand_prologue (void);
277 extern void mips_expand_before_return (void);
278 extern void mips_expand_epilogue (bool);
279 extern bool mips_can_use_return_insn (void);
281 extern bool mips_secondary_memory_needed (enum reg_class
, enum reg_class
,
283 extern bool mips_cannot_change_mode_class (machine_mode
,
284 machine_mode
, enum reg_class
);
285 extern bool mips_dangerous_for_la25_p (rtx
);
286 extern bool mips_modes_tieable_p (machine_mode
, machine_mode
);
287 extern enum reg_class
mips_secondary_reload_class (enum reg_class
,
290 extern int mips_class_max_nregs (enum reg_class
, machine_mode
);
292 extern machine_mode
mips_hard_regno_caller_save_mode (unsigned int,
295 extern int mips_adjust_insn_length (rtx_insn
*, int);
296 extern void mips_output_load_label (rtx
);
297 extern const char *mips_output_conditional_branch (rtx_insn
*, rtx
*,
298 const char *, const char *);
299 extern const char *mips_output_order_conditional_branch (rtx_insn
*, rtx
*,
301 extern const char *mips_output_sync (void);
302 extern const char *mips_output_sync_loop (rtx_insn
*, rtx
*);
303 extern unsigned int mips_sync_loop_insns (rtx_insn
*, rtx
*);
304 extern const char *mips_output_division (const char *, rtx
*);
305 extern const char *mips_output_probe_stack_range (rtx
, rtx
);
306 extern unsigned int mips_hard_regno_nregs (int, machine_mode
);
307 extern bool mips_linked_madd_p (rtx_insn
*, rtx_insn
*);
308 extern bool mips_store_data_bypass_p (rtx_insn
*, rtx_insn
*);
309 extern int mips_dspalu_bypass_p (rtx
, rtx
);
310 extern rtx
mips_prefetch_cookie (rtx
, rtx
);
312 extern const char *current_section_name (void);
313 extern unsigned int current_section_flags (void);
314 extern bool mips_use_ins_ext_p (rtx
, HOST_WIDE_INT
, HOST_WIDE_INT
);
316 extern const char *mips16e_output_save_restore (rtx
, HOST_WIDE_INT
);
317 extern bool mips16e_save_restore_pattern_p (rtx
, HOST_WIDE_INT
,
318 struct mips16e_save_restore_info
*);
320 extern bool mask_low_and_shift_p (machine_mode
, rtx
, rtx
, int);
321 extern int mask_low_and_shift_len (machine_mode
, rtx
, rtx
);
322 extern bool and_operands_ok (machine_mode
, rtx
, rtx
);
323 extern bool mips_fmadd_bypass (rtx_insn
*, rtx_insn
*);
325 union mips_gen_fn_ptrs
327 rtx (*fn_6
) (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
);
328 rtx (*fn_5
) (rtx
, rtx
, rtx
, rtx
, rtx
);
329 rtx (*fn_4
) (rtx
, rtx
, rtx
, rtx
);
332 extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs
,
335 extern void mips_expand_vector_init (rtx
, rtx
);
336 extern bool mips_expand_vec_perm_const (rtx op
[4]);
337 extern void mips_expand_vec_unpack (rtx op
[2], bool, bool);
338 extern void mips_expand_vec_reduc (rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
339 extern void mips_expand_vec_minmax (rtx
, rtx
, rtx
,
340 rtx (*) (rtx
, rtx
, rtx
), bool);
342 extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT
, int, int);
343 extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT
, int, int);
344 extern const char *umips_output_save_restore (bool, rtx
);
345 extern bool umips_save_restore_pattern_p (bool, rtx
);
346 extern bool umips_load_store_pair_p (bool, rtx
*);
347 extern void umips_output_load_store_pair (bool, rtx
*);
348 extern bool umips_movep_target_p (rtx
, rtx
);
349 extern bool umips_12bit_offset_address_p (rtx
, machine_mode
);
350 extern bool mips_9bit_offset_address_p (rtx
, machine_mode
);
351 extern bool lwsp_swsp_address_p (rtx
, machine_mode
);
352 extern bool m16_based_address_p (rtx
, machine_mode
,
353 int (*)(rtx_def
*, machine_mode
));
354 extern rtx
mips_expand_thread_pointer (rtx
);
355 extern void mips16_expand_get_fcsr (rtx
);
356 extern void mips16_expand_set_fcsr (rtx
);
358 extern bool mips_eh_uses (unsigned int);
359 extern bool mips_epilogue_uses (unsigned int);
360 extern void mips_final_prescan_insn (rtx_insn
*, rtx
*, int);
361 extern int mips_trampoline_code_size (void);
362 extern void mips_function_profiler (FILE *);
363 extern bool mips_load_store_bonding_p (rtx
*, machine_mode
, bool);
365 typedef rtx (*mulsidi3_gen_fn
) (rtx
, rtx
, rtx
);
367 extern mulsidi3_gen_fn
mips_mulsidi3_gen_fn (enum rtx_code
);
370 #endif /* ! GCC_MIPS_PROTOS_H */