1 /* Prototypes of target machine for GNU compiler. MIPS version.
2 Copyright (C) 1989-2013 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, enum machine_mode
, bool);
196 extern bool mips_stack_address_p (rtx
, enum machine_mode
);
197 extern int mips_address_insns (rtx
, enum 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
);
201 extern int mips_idiv_insns (void);
202 extern rtx
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
, enum 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 (enum machine_mode
, rtx
, rtx
);
214 extern int m16_uimm3_b (rtx
, enum machine_mode
);
215 extern int m16_simm4_1 (rtx
, enum machine_mode
);
216 extern int m16_nsimm4_1 (rtx
, enum machine_mode
);
217 extern int m16_simm5_1 (rtx
, enum machine_mode
);
218 extern int m16_nsimm5_1 (rtx
, enum machine_mode
);
219 extern int m16_uimm5_4 (rtx
, enum machine_mode
);
220 extern int m16_nuimm5_4 (rtx
, enum machine_mode
);
221 extern int m16_simm8_1 (rtx
, enum machine_mode
);
222 extern int m16_nsimm8_1 (rtx
, enum machine_mode
);
223 extern int m16_uimm8_1 (rtx
, enum machine_mode
);
224 extern int m16_nuimm8_1 (rtx
, enum machine_mode
);
225 extern int m16_uimm8_m1_1 (rtx
, enum machine_mode
);
226 extern int m16_uimm8_4 (rtx
, enum machine_mode
);
227 extern int m16_nuimm8_4 (rtx
, enum machine_mode
);
228 extern int m16_simm8_8 (rtx
, enum machine_mode
);
229 extern int m16_nsimm8_8 (rtx
, enum machine_mode
);
231 extern rtx
mips_subword (rtx
, bool);
232 extern bool mips_split_move_p (rtx
, rtx
, enum mips_split_type
);
233 extern void mips_split_move (rtx
, rtx
, enum mips_split_type
);
234 extern bool mips_split_move_insn_p (rtx
, rtx
, rtx
);
235 extern void mips_split_move_insn (rtx
, rtx
, rtx
);
236 extern const char *mips_output_move (rtx
, rtx
);
237 extern bool mips_cfun_has_cprestore_slot_p (void);
238 extern bool mips_cprestore_address_p (rtx
, bool);
239 extern void mips_save_gp_to_cprestore_slot (rtx
, rtx
, rtx
, rtx
);
240 extern void mips_restore_gp_from_cprestore_slot (rtx
);
242 extern void mips_expand_scc (rtx
*);
243 extern void mips_expand_conditional_branch (rtx
*);
244 extern void mips_expand_vcondv2sf (rtx
, rtx
, rtx
, enum rtx_code
, rtx
, rtx
);
245 extern void mips_expand_conditional_move (rtx
*);
246 extern void mips_expand_conditional_trap (rtx
);
248 extern bool mips_use_pic_fn_addr_reg_p (const_rtx
);
249 extern rtx
mips_expand_call (enum mips_call_type
, rtx
, rtx
, rtx
, rtx
, bool);
250 extern void mips_split_call (rtx
, rtx
);
251 extern bool mips_get_pic_call_symbol (rtx
*, int);
252 extern void mips_expand_fcc_reload (rtx
, rtx
, rtx
);
253 extern void mips_set_return_address (rtx
, rtx
);
254 extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
255 extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
256 extern bool mips_expand_block_move (rtx
, rtx
, rtx
);
257 extern void mips_expand_synci_loop (rtx
, rtx
);
259 extern void mips_init_cumulative_args (CUMULATIVE_ARGS
*, tree
);
260 extern bool mips_pad_arg_upward (enum machine_mode
, const_tree
);
261 extern bool mips_pad_reg_upward (enum machine_mode
, tree
);
263 extern bool mips_expand_ext_as_unaligned_load (rtx
, rtx
, HOST_WIDE_INT
,
264 HOST_WIDE_INT
, bool);
265 extern bool mips_expand_ins_as_unaligned_store (rtx
, rtx
, HOST_WIDE_INT
,
267 extern bool mips_mem_fits_mode_p (enum machine_mode mode
, rtx x
);
268 extern void mips_order_regs_for_local_alloc (void);
269 extern HOST_WIDE_INT
mips_debugger_offset (rtx
, HOST_WIDE_INT
);
271 extern void mips_push_asm_switch (struct mips_asm_switch
*);
272 extern void mips_pop_asm_switch (struct mips_asm_switch
*);
273 extern void mips_output_external (FILE *, tree
, const char *);
274 extern void mips_output_ascii (FILE *, const char *, size_t);
275 extern const char *mips_output_tls_reloc_directive (rtx
*);
276 extern void mips_output_aligned_decl_common (FILE *, tree
, const char *,
277 unsigned HOST_WIDE_INT
,
279 extern void mips_declare_common_object (FILE *, const char *,
280 const char *, unsigned HOST_WIDE_INT
,
282 extern void mips_declare_object (FILE *, const char *, const char *,
283 const char *, ...) ATTRIBUTE_PRINTF_4
;
284 extern void mips_declare_object_name (FILE *, const char *, tree
);
285 extern void mips_finish_declare_object (FILE *, tree
, int, int);
287 extern bool mips_small_data_pattern_p (rtx
);
288 extern rtx
mips_rewrite_small_data (rtx
);
289 extern HOST_WIDE_INT
mips_initial_elimination_offset (int, int);
290 extern rtx
mips_return_addr (int, rtx
);
291 extern bool mips_must_initialize_gp_p (void);
292 extern enum mips_loadgp_style
mips_current_loadgp_style (void);
293 extern void mips_emit_save_slot_move (rtx
, rtx
, rtx
);
294 extern void mips_expand_prologue (void);
295 extern void mips_expand_before_return (void);
296 extern void mips_expand_epilogue (bool);
297 extern bool mips_can_use_return_insn (void);
299 extern bool mips_cannot_change_mode_class (enum machine_mode
,
300 enum machine_mode
, enum reg_class
);
301 extern bool mips_dangerous_for_la25_p (rtx
);
302 extern bool mips_modes_tieable_p (enum machine_mode
, enum machine_mode
);
303 extern enum reg_class
mips_secondary_reload_class (enum reg_class
,
306 extern int mips_class_max_nregs (enum reg_class
, enum machine_mode
);
308 extern int mips_adjust_insn_length (rtx
, int);
309 extern void mips_output_load_label (rtx
);
310 extern const char *mips_output_conditional_branch (rtx
, rtx
*, const char *,
312 extern const char *mips_output_order_conditional_branch (rtx
, rtx
*, bool);
313 extern const char *mips_output_sync (void);
314 extern const char *mips_output_sync_loop (rtx
, rtx
*);
315 extern unsigned int mips_sync_loop_insns (rtx
, rtx
*);
316 extern const char *mips_output_division (const char *, rtx
*);
317 extern const char *mips_output_probe_stack_range (rtx
, rtx
);
318 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode
);
319 extern bool mips_linked_madd_p (rtx
, rtx
);
320 extern bool mips_store_data_bypass_p (rtx
, rtx
);
321 extern int mips_dspalu_bypass_p (rtx
, rtx
);
322 extern rtx
mips_prefetch_cookie (rtx
, rtx
);
324 extern const char *current_section_name (void);
325 extern unsigned int current_section_flags (void);
326 extern bool mips_use_ins_ext_p (rtx
, HOST_WIDE_INT
, HOST_WIDE_INT
);
328 extern const char *mips16e_output_save_restore (rtx
, HOST_WIDE_INT
);
329 extern bool mips16e_save_restore_pattern_p (rtx
, HOST_WIDE_INT
,
330 struct mips16e_save_restore_info
*);
332 extern bool mask_low_and_shift_p (enum machine_mode
, rtx
, rtx
, int);
333 extern int mask_low_and_shift_len (enum machine_mode
, rtx
, rtx
);
334 extern bool and_operands_ok (enum machine_mode
, rtx
, rtx
);
336 union mips_gen_fn_ptrs
338 rtx (*fn_6
) (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
);
339 rtx (*fn_5
) (rtx
, rtx
, rtx
, rtx
, rtx
);
340 rtx (*fn_4
) (rtx
, rtx
, rtx
, rtx
);
343 extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs
,
346 extern void mips_expand_vector_init (rtx
, rtx
);
347 extern bool mips_expand_vec_perm_const (rtx op
[4]);
348 extern void mips_expand_vec_unpack (rtx op
[2], bool, bool);
349 extern void mips_expand_vec_reduc (rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
350 extern void mips_expand_vec_minmax (rtx
, rtx
, rtx
,
351 rtx (*) (rtx
, rtx
, rtx
), bool);
353 extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT
, int, int);
354 extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT
, int, int);
355 extern const char *umips_output_save_restore (bool, rtx
);
356 extern bool umips_save_restore_pattern_p (bool, rtx
);
357 extern bool umips_load_store_pair_p (bool, rtx
*);
358 extern void umips_output_load_store_pair (bool, rtx
*);
359 extern bool umips_movep_target_p (rtx
, rtx
);
360 extern bool umips_12bit_offset_address_p (rtx
, enum machine_mode
);
361 extern bool lwsp_swsp_address_p (rtx
, enum machine_mode
);
362 extern bool m16_based_address_p (rtx
, enum machine_mode
,
363 int (*)(rtx_def
*, machine_mode
));
364 extern rtx
mips_expand_thread_pointer (rtx
);
366 extern bool mips_eh_uses (unsigned int);
367 extern bool mips_epilogue_uses (unsigned int);
368 extern void mips_final_prescan_insn (rtx
, rtx
*, int);
369 extern int mips_trampoline_code_size (void);
370 extern void mips_function_profiler (FILE *);
372 typedef rtx (*mulsidi3_gen_fn
) (rtx
, rtx
, rtx
);
374 extern mulsidi3_gen_fn
mips_mulsidi3_gen_fn (enum rtx_code
);
377 #endif /* ! GCC_MIPS_PROTOS_H */