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, 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 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
mips_expand_call (enum mips_call_type
, rtx
, rtx
, rtx
, rtx
, bool);
233 extern void mips_split_call (rtx
, rtx
);
234 extern bool mips_get_pic_call_symbol (rtx
*, int);
235 extern void mips_set_return_address (rtx
, rtx
);
236 extern bool mips_move_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
237 extern bool mips_store_by_pieces_p (unsigned HOST_WIDE_INT
, unsigned int);
238 extern bool mips_expand_block_move (rtx
, rtx
, rtx
);
239 extern void mips_expand_synci_loop (rtx
, rtx
);
241 extern void mips_init_cumulative_args (CUMULATIVE_ARGS
*, tree
);
242 extern bool mips_pad_arg_upward (enum machine_mode
, const_tree
);
243 extern bool mips_pad_reg_upward (enum machine_mode
, tree
);
245 extern bool mips_expand_ext_as_unaligned_load (rtx
, rtx
, HOST_WIDE_INT
,
246 HOST_WIDE_INT
, bool);
247 extern bool mips_expand_ins_as_unaligned_store (rtx
, rtx
, HOST_WIDE_INT
,
249 extern bool mips_mem_fits_mode_p (enum machine_mode mode
, rtx x
);
250 extern HOST_WIDE_INT
mips_debugger_offset (rtx
, HOST_WIDE_INT
);
252 extern void mips_push_asm_switch (struct mips_asm_switch
*);
253 extern void mips_pop_asm_switch (struct mips_asm_switch
*);
254 extern void mips_output_external (FILE *, tree
, const char *);
255 extern void mips_output_ascii (FILE *, const char *, size_t);
256 extern const char *mips_output_tls_reloc_directive (rtx
*);
257 extern void mips_output_aligned_decl_common (FILE *, tree
, const char *,
258 unsigned HOST_WIDE_INT
,
260 extern void mips_declare_common_object (FILE *, const char *,
261 const char *, unsigned HOST_WIDE_INT
,
263 extern void mips_declare_object (FILE *, const char *, const char *,
264 const char *, ...) ATTRIBUTE_PRINTF_4
;
265 extern void mips_declare_object_name (FILE *, const char *, tree
);
266 extern void mips_finish_declare_object (FILE *, tree
, int, int);
268 extern bool mips_small_data_pattern_p (rtx
);
269 extern rtx
mips_rewrite_small_data (rtx
);
270 extern HOST_WIDE_INT
mips_initial_elimination_offset (int, int);
271 extern rtx
mips_return_addr (int, rtx
);
272 extern bool mips_must_initialize_gp_p (void);
273 extern enum mips_loadgp_style
mips_current_loadgp_style (void);
274 extern void mips_emit_save_slot_move (rtx
, rtx
, rtx
);
275 extern void mips_expand_prologue (void);
276 extern void mips_expand_before_return (void);
277 extern void mips_expand_epilogue (bool);
278 extern bool mips_can_use_return_insn (void);
280 extern bool mips_cannot_change_mode_class (enum machine_mode
,
281 enum machine_mode
, enum reg_class
);
282 extern bool mips_dangerous_for_la25_p (rtx
);
283 extern bool mips_modes_tieable_p (enum machine_mode
, enum machine_mode
);
284 extern enum reg_class
mips_secondary_reload_class (enum reg_class
,
287 extern int mips_class_max_nregs (enum reg_class
, enum machine_mode
);
289 extern int mips_adjust_insn_length (rtx
, int);
290 extern void mips_output_load_label (rtx
);
291 extern const char *mips_output_conditional_branch (rtx
, rtx
*, const char *,
293 extern const char *mips_output_order_conditional_branch (rtx
, rtx
*, bool);
294 extern const char *mips_output_sync (void);
295 extern const char *mips_output_sync_loop (rtx
, rtx
*);
296 extern unsigned int mips_sync_loop_insns (rtx
, rtx
*);
297 extern const char *mips_output_division (const char *, rtx
*);
298 extern const char *mips_output_probe_stack_range (rtx
, rtx
);
299 extern unsigned int mips_hard_regno_nregs (int, enum machine_mode
);
300 extern bool mips_linked_madd_p (rtx
, rtx
);
301 extern bool mips_store_data_bypass_p (rtx
, rtx
);
302 extern int mips_dspalu_bypass_p (rtx
, rtx
);
303 extern rtx
mips_prefetch_cookie (rtx
, rtx
);
305 extern const char *current_section_name (void);
306 extern unsigned int current_section_flags (void);
307 extern bool mips_use_ins_ext_p (rtx
, HOST_WIDE_INT
, HOST_WIDE_INT
);
309 extern const char *mips16e_output_save_restore (rtx
, HOST_WIDE_INT
);
310 extern bool mips16e_save_restore_pattern_p (rtx
, HOST_WIDE_INT
,
311 struct mips16e_save_restore_info
*);
313 extern bool mask_low_and_shift_p (enum machine_mode
, rtx
, rtx
, int);
314 extern int mask_low_and_shift_len (enum machine_mode
, rtx
, rtx
);
315 extern bool and_operands_ok (enum machine_mode
, rtx
, rtx
);
316 extern bool mips_fmadd_bypass (rtx
, rtx
);
318 union mips_gen_fn_ptrs
320 rtx (*fn_6
) (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
);
321 rtx (*fn_5
) (rtx
, rtx
, rtx
, rtx
, rtx
);
322 rtx (*fn_4
) (rtx
, rtx
, rtx
, rtx
);
325 extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs
,
328 extern void mips_expand_vector_init (rtx
, rtx
);
329 extern bool mips_expand_vec_perm_const (rtx op
[4]);
330 extern void mips_expand_vec_unpack (rtx op
[2], bool, bool);
331 extern void mips_expand_vec_reduc (rtx
, rtx
, rtx (*)(rtx
, rtx
, rtx
));
332 extern void mips_expand_vec_minmax (rtx
, rtx
, rtx
,
333 rtx (*) (rtx
, rtx
, rtx
), bool);
335 extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT
, int, int);
336 extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT
, int, int);
337 extern const char *umips_output_save_restore (bool, rtx
);
338 extern bool umips_save_restore_pattern_p (bool, rtx
);
339 extern bool umips_load_store_pair_p (bool, rtx
*);
340 extern void umips_output_load_store_pair (bool, rtx
*);
341 extern bool umips_movep_target_p (rtx
, rtx
);
342 extern bool umips_12bit_offset_address_p (rtx
, enum machine_mode
);
343 extern bool lwsp_swsp_address_p (rtx
, enum machine_mode
);
344 extern bool m16_based_address_p (rtx
, enum machine_mode
,
345 int (*)(rtx_def
*, machine_mode
));
346 extern rtx
mips_expand_thread_pointer (rtx
);
347 extern void mips16_expand_get_fcsr (rtx
);
348 extern void mips16_expand_set_fcsr (rtx
);
350 extern bool mips_eh_uses (unsigned int);
351 extern bool mips_epilogue_uses (unsigned int);
352 extern void mips_final_prescan_insn (rtx
, rtx
*, int);
353 extern int mips_trampoline_code_size (void);
354 extern void mips_function_profiler (FILE *);
356 typedef rtx (*mulsidi3_gen_fn
) (rtx
, rtx
, rtx
);
358 extern mulsidi3_gen_fn
mips_mulsidi3_gen_fn (enum rtx_code
);
361 #endif /* ! GCC_MIPS_PROTOS_H */