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bd9f1972 | 1 | /* Prototypes of target machine for GNU compiler. MIPS version. |
23a5b65a | 2 | Copyright (C) 1989-2014 Free Software Foundation, Inc. |
bd9f1972 KG |
3 | Contributed by A. Lichnewsky (lich@inria.inria.fr). |
4 | Changed by Michael Meissner (meissner@osf.org). | |
85f65093 | 5 | 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and |
bd9f1972 KG |
6 | Brendan Eich (brendan@microunity.com). |
7 | ||
7ec022b2 | 8 | This file is part of GCC. |
bd9f1972 | 9 | |
7ec022b2 | 10 | GCC is free software; you can redistribute it and/or modify |
bd9f1972 | 11 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 12 | the Free Software Foundation; either version 3, or (at your option) |
bd9f1972 KG |
13 | any later version. |
14 | ||
7ec022b2 | 15 | GCC is distributed in the hope that it will be useful, |
bd9f1972 KG |
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. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
21 | along with GCC; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
bd9f1972 | 23 | |
88657302 RH |
24 | #ifndef GCC_MIPS_PROTOS_H |
25 | #define GCC_MIPS_PROTOS_H | |
bd9f1972 | 26 | |
280fcbfa RS |
27 | /* Describes how a symbol is used. |
28 | ||
29 | SYMBOL_CONTEXT_CALL | |
30 | The symbol is used as the target of a call instruction. | |
31 | ||
32 | SYMBOL_CONTEXT_LEA | |
33 | The symbol is used in a load-address operation. | |
34 | ||
35 | SYMBOL_CONTEXT_MEM | |
36 | The symbol is used as the address in a MEM. */ | |
37 | enum mips_symbol_context { | |
38 | SYMBOL_CONTEXT_CALL, | |
39 | SYMBOL_CONTEXT_LEA, | |
40 | SYMBOL_CONTEXT_MEM | |
41 | }; | |
42 | ||
e245bd81 RS |
43 | /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address. |
44 | ||
67da85da RS |
45 | SYMBOL_ABSOLUTE |
46 | The symbol's value will be calculated using absolute relocations, | |
47 | such as %hi and %lo. | |
e245bd81 | 48 | |
67da85da RS |
49 | SYMBOL_GP_RELATIVE |
50 | The symbol's value will be calculated by adding a 16-bit offset | |
51 | from $gp. | |
e245bd81 | 52 | |
67da85da RS |
53 | SYMBOL_PC_RELATIVE |
54 | The symbol's value will be calculated using a MIPS16 PC-relative | |
55 | calculation. | |
e245bd81 | 56 | |
08e7ceb3 RS |
57 | SYMBOL_GOT_PAGE_OFST |
58 | The symbol's value will be calculated by loading an address | |
59 | from the GOT and then applying a 16-bit offset. | |
e245bd81 | 60 | |
08e7ceb3 RS |
61 | SYMBOL_GOT_DISP |
62 | The symbol's value will be loaded directly from the GOT. | |
e245bd81 RS |
63 | |
64 | SYMBOL_GOTOFF_PAGE | |
08e7ceb3 RS |
65 | An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST. It represents the |
66 | offset from _gp of the GOT entry. | |
e245bd81 | 67 | |
08e7ceb3 RS |
68 | SYMBOL_GOTOFF_DISP |
69 | An UNSPEC wrapper around a SYMBOL_GOT_DISP. It represents the | |
dd5a833e | 70 | offset from _gp of the symbol's GOT entry. |
e245bd81 RS |
71 | |
72 | SYMBOL_GOTOFF_CALL | |
08e7ceb3 | 73 | Like SYMBOL_GOTOFF_DISP, but used when calling a global function. |
e245bd81 RS |
74 | The GOT entry is allowed to point to a stub rather than to the |
75 | function itself. | |
76 | ||
77 | SYMBOL_GOTOFF_LOADGP | |
78 | An UNSPEC wrapper around a function's address. It represents the | |
79 | offset of _gp from the start of the function. | |
80 | ||
69229b81 DJ |
81 | SYMBOL_TLS |
82 | A thread-local symbol. | |
83 | ||
84 | SYMBOL_TLSGD | |
85 | SYMBOL_TLSLDM | |
86 | SYMBOL_DTPREL | |
87 | SYMBOL_GOTTPREL | |
88 | SYMBOL_TPREL | |
89 | UNSPEC wrappers around SYMBOL_TLS, corresponding to the | |
90 | thread-local storage relocation operators. | |
91 | ||
e245bd81 RS |
92 | SYMBOL_64_HIGH |
93 | For a 64-bit symbolic address X, this is the value of | |
94 | (%highest(X) << 16) + %higher(X). | |
95 | ||
96 | SYMBOL_64_MID | |
97 | For a 64-bit symbolic address X, this is the value of | |
98 | (%higher(X) << 16) + %hi(X). | |
99 | ||
100 | SYMBOL_64_LOW | |
101 | For a 64-bit symbolic address X, this is the value of | |
8cb6400c RS |
102 | (%hi(X) << 16) + %lo(X). |
103 | ||
104 | SYMBOL_HALF | |
105 | An UNSPEC wrapper around any kind of address. It represents the | |
106 | low 16 bits of that address. */ | |
e245bd81 | 107 | enum mips_symbol_type { |
67da85da RS |
108 | SYMBOL_ABSOLUTE, |
109 | SYMBOL_GP_RELATIVE, | |
110 | SYMBOL_PC_RELATIVE, | |
08e7ceb3 RS |
111 | SYMBOL_GOT_PAGE_OFST, |
112 | SYMBOL_GOT_DISP, | |
e245bd81 | 113 | SYMBOL_GOTOFF_PAGE, |
08e7ceb3 | 114 | SYMBOL_GOTOFF_DISP, |
e245bd81 RS |
115 | SYMBOL_GOTOFF_CALL, |
116 | SYMBOL_GOTOFF_LOADGP, | |
69229b81 DJ |
117 | SYMBOL_TLS, |
118 | SYMBOL_TLSGD, | |
119 | SYMBOL_TLSLDM, | |
120 | SYMBOL_DTPREL, | |
121 | SYMBOL_GOTTPREL, | |
122 | SYMBOL_TPREL, | |
e245bd81 RS |
123 | SYMBOL_64_HIGH, |
124 | SYMBOL_64_MID, | |
8cb6400c RS |
125 | SYMBOL_64_LOW, |
126 | SYMBOL_HALF | |
e245bd81 | 127 | }; |
8cb6400c | 128 | #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1) |
e245bd81 | 129 | |
d9870b7e RS |
130 | /* Identifiers a style of $gp initialization sequence. |
131 | ||
132 | LOADGP_NONE | |
133 | No initialization sequence is needed. | |
134 | ||
135 | LOADGP_OLDABI | |
136 | The o32 and o64 PIC sequence (the kind traditionally generated | |
137 | by .cpload). | |
138 | ||
139 | LOADGP_NEWABI | |
140 | The n32 and n64 PIC sequence (the kind traditionally generated | |
141 | by .cpsetup). | |
142 | ||
143 | LOADGP_ABSOLUTE | |
8cb6400c RS |
144 | The GNU absolute sequence, as generated by loadgp_absolute. |
145 | ||
146 | LOADGP_RTP | |
147 | The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */ | |
d9870b7e RS |
148 | enum mips_loadgp_style { |
149 | LOADGP_NONE, | |
150 | LOADGP_OLDABI, | |
151 | LOADGP_NEWABI, | |
8cb6400c RS |
152 | LOADGP_ABSOLUTE, |
153 | LOADGP_RTP | |
d9870b7e RS |
154 | }; |
155 | ||
e1260576 RS |
156 | struct mips16e_save_restore_info; |
157 | ||
08d0963a RS |
158 | /* Classifies a type of call. |
159 | ||
160 | MIPS_CALL_NORMAL | |
161 | A normal call or call_value pattern. | |
162 | ||
163 | MIPS_CALL_SIBCALL | |
164 | A sibcall or sibcall_value pattern. | |
165 | ||
166 | MIPS_CALL_EPILOGUE | |
167 | A call inserted in the epilogue. */ | |
168 | enum mips_call_type { | |
169 | MIPS_CALL_NORMAL, | |
170 | MIPS_CALL_SIBCALL, | |
171 | MIPS_CALL_EPILOGUE | |
172 | }; | |
173 | ||
4670abb0 RS |
174 | /* Controls the conditions under which certain instructions are split. |
175 | ||
176 | SPLIT_IF_NECESSARY | |
177 | Only perform splits that are necessary for correctness | |
178 | (because no unsplit version exists). | |
179 | ||
180 | SPLIT_FOR_SPEED | |
181 | Perform splits that are necessary for correctness or | |
182 | beneficial for code speed. | |
183 | ||
184 | SPLIT_FOR_SIZE | |
185 | Perform splits that are necessary for correctness or | |
186 | beneficial for code size. */ | |
187 | enum mips_split_type { | |
188 | SPLIT_IF_NECESSARY, | |
189 | SPLIT_FOR_SPEED, | |
190 | SPLIT_FOR_SIZE | |
191 | }; | |
192 | ||
280fcbfa RS |
193 | extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_context, |
194 | enum mips_symbol_type *); | |
65239d20 | 195 | extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, bool); |
96a30b18 | 196 | extern bool mips_stack_address_p (rtx, enum machine_mode); |
5955b0a3 | 197 | extern int mips_address_insns (rtx, enum machine_mode, bool); |
b4966b1b | 198 | extern int mips_const_insns (rtx); |
c5cb5d18 | 199 | extern int mips_split_const_insns (rtx); |
5955b0a3 | 200 | extern int mips_load_store_insns (rtx, rtx); |
46490403 | 201 | extern int mips_idiv_insns (void); |
c6f971f4 | 202 | extern rtx_insn *mips_emit_move (rtx, rtx); |
a2ccf3c2 RS |
203 | #ifdef RTX_CODE |
204 | extern void mips_emit_binary (enum rtx_code, rtx, rtx, rtx); | |
205 | #endif | |
08d0963a RS |
206 | extern rtx mips_pic_base_register (rtx); |
207 | extern rtx mips_got_load (rtx, rtx, enum mips_symbol_type); | |
390ea488 | 208 | extern bool mips_split_symbol (rtx, rtx, enum machine_mode, rtx *); |
e245bd81 | 209 | extern rtx mips_unspec_address (rtx, enum mips_symbol_type); |
36be1dee | 210 | extern rtx mips_strip_unspec_address (rtx); |
ea462dd0 | 211 | extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT); |
b4966b1b | 212 | extern bool mips_legitimize_move (enum machine_mode, rtx, rtx); |
b4966b1b | 213 | |
65239d20 | 214 | extern rtx mips_subword (rtx, bool); |
4670abb0 RS |
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); | |
b4966b1b | 219 | extern const char *mips_output_move (rtx, rtx); |
0c433c31 RS |
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); | |
6b7d57c7 | 224 | #ifdef RTX_CODE |
f90b7a5a PB |
225 | extern void mips_expand_scc (rtx *); |
226 | extern void mips_expand_conditional_branch (rtx *); | |
ec4fc7ed | 227 | extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx); |
65239d20 | 228 | extern void mips_expand_conditional_move (rtx *); |
f90b7a5a | 229 | extern void mips_expand_conditional_trap (rtx); |
6b7d57c7 | 230 | #endif |
08d0963a | 231 | extern bool mips_use_pic_fn_addr_reg_p (const_rtx); |
c6f971f4 DM |
232 | extern rtx_insn *mips_expand_call (enum mips_call_type, rtx, rtx, rtx, rtx, |
233 | bool); | |
08d0963a | 234 | extern void mips_split_call (rtx, rtx); |
b53da244 | 235 | extern bool mips_get_pic_call_symbol (rtx *, int); |
b4966b1b | 236 | extern void mips_set_return_address (rtx, rtx); |
0d8f5d62 RS |
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); | |
b4966b1b | 239 | extern bool mips_expand_block_move (rtx, rtx, rtx); |
df770e04 | 240 | extern void mips_expand_synci_loop (rtx, rtx); |
b4966b1b | 241 | |
65239d20 | 242 | extern void mips_init_cumulative_args (CUMULATIVE_ARGS *, tree); |
586de218 | 243 | extern bool mips_pad_arg_upward (enum machine_mode, const_tree); |
648bb159 | 244 | extern bool mips_pad_reg_upward (enum machine_mode, tree); |
b4966b1b | 245 | |
65239d20 | 246 | extern bool mips_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT, |
aea21190 | 247 | HOST_WIDE_INT, bool); |
65239d20 RS |
248 | extern bool mips_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT, |
249 | HOST_WIDE_INT); | |
9226543b | 250 | extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x); |
b4966b1b RS |
251 | extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT); |
252 | ||
cf5fb4b0 RS |
253 | extern void mips_push_asm_switch (struct mips_asm_switch *); |
254 | extern void mips_pop_asm_switch (struct mips_asm_switch *); | |
f8fdb503 | 255 | extern void mips_output_external (FILE *, tree, const char *); |
65239d20 | 256 | extern void mips_output_ascii (FILE *, const char *, size_t); |
ddaf8125 | 257 | extern const char *mips_output_tls_reloc_directive (rtx *); |
35f5add9 RS |
258 | extern void mips_output_aligned_decl_common (FILE *, tree, const char *, |
259 | unsigned HOST_WIDE_INT, | |
260 | unsigned int); | |
48b2e0a7 RS |
261 | extern void mips_declare_common_object (FILE *, const char *, |
262 | const char *, unsigned HOST_WIDE_INT, | |
263 | unsigned int, bool); | |
b4966b1b | 264 | extern void mips_declare_object (FILE *, const char *, const char *, |
99a3237a | 265 | const char *, ...) ATTRIBUTE_PRINTF_4; |
b4966b1b RS |
266 | extern void mips_declare_object_name (FILE *, const char *, tree); |
267 | extern void mips_finish_declare_object (FILE *, tree, int, int); | |
268 | ||
96a30b18 | 269 | extern bool mips_small_data_pattern_p (rtx); |
108b61d5 | 270 | extern rtx mips_rewrite_small_data (rtx); |
e88fb323 | 271 | extern HOST_WIDE_INT mips_initial_elimination_offset (int, int); |
b4966b1b | 272 | extern rtx mips_return_addr (int, rtx); |
0c433c31 | 273 | extern bool mips_must_initialize_gp_p (void); |
d9870b7e | 274 | extern enum mips_loadgp_style mips_current_loadgp_style (void); |
0c433c31 | 275 | extern void mips_emit_save_slot_move (rtx, rtx, rtx); |
b4966b1b | 276 | extern void mips_expand_prologue (void); |
2f7e2abb | 277 | extern void mips_expand_before_return (void); |
65239d20 RS |
278 | extern void mips_expand_epilogue (bool); |
279 | extern bool mips_can_use_return_insn (void); | |
b4966b1b RS |
280 | |
281 | extern bool mips_cannot_change_mode_class (enum machine_mode, | |
282 | enum machine_mode, enum reg_class); | |
a6008bd8 | 283 | extern bool mips_dangerous_for_la25_p (rtx); |
e5a2b69d | 284 | extern bool mips_modes_tieable_p (enum machine_mode, enum machine_mode); |
b4966b1b RS |
285 | extern enum reg_class mips_secondary_reload_class (enum reg_class, |
286 | enum machine_mode, | |
65239d20 | 287 | rtx, bool); |
b4966b1b | 288 | extern int mips_class_max_nregs (enum reg_class, enum machine_mode); |
b4966b1b | 289 | |
c6f971f4 | 290 | extern int mips_adjust_insn_length (rtx_insn *, int); |
0c433c31 | 291 | extern void mips_output_load_label (rtx); |
c6f971f4 DM |
292 | extern const char *mips_output_conditional_branch (rtx_insn *, rtx *, |
293 | const char *, const char *); | |
294 | extern const char *mips_output_order_conditional_branch (rtx_insn *, rtx *, | |
295 | bool); | |
6f5a62e9 RS |
296 | extern const char *mips_output_sync (void); |
297 | extern const char *mips_output_sync_loop (rtx, rtx *); | |
298 | extern unsigned int mips_sync_loop_insns (rtx, rtx *); | |
b4966b1b | 299 | extern const char *mips_output_division (const char *, rtx *); |
3b601ca3 | 300 | extern const char *mips_output_probe_stack_range (rtx, rtx); |
b4966b1b | 301 | extern unsigned int mips_hard_regno_nregs (int, enum machine_mode); |
647d790d | 302 | extern bool mips_linked_madd_p (rtx_insn *, rtx_insn *); |
65239d20 | 303 | extern bool mips_store_data_bypass_p (rtx, rtx); |
ef2e5300 | 304 | extern int mips_dspalu_bypass_p (rtx, rtx); |
4767c570 | 305 | extern rtx mips_prefetch_cookie (rtx, rtx); |
b4966b1b | 306 | |
b4966b1b RS |
307 | extern const char *current_section_name (void); |
308 | extern unsigned int current_section_flags (void); | |
65239d20 | 309 | extern bool mips_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT); |
bd9f1972 | 310 | |
e1260576 RS |
311 | extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT); |
312 | extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT, | |
313 | struct mips16e_save_restore_info *); | |
49912bcd AN |
314 | |
315 | extern bool mask_low_and_shift_p (enum machine_mode, rtx, rtx, int); | |
316 | extern int mask_low_and_shift_len (enum machine_mode, rtx, rtx); | |
b2c9d70f | 317 | extern bool and_operands_ok (enum machine_mode, rtx, rtx); |
647d790d | 318 | extern bool mips_fmadd_bypass (rtx_insn *, rtx_insn *); |
49912bcd | 319 | |
06d19617 DD |
320 | union mips_gen_fn_ptrs |
321 | { | |
322 | rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx); | |
323 | rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx); | |
324 | rtx (*fn_4) (rtx, rtx, rtx, rtx); | |
325 | }; | |
326 | ||
327 | extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs, | |
328 | rtx, rtx, rtx, rtx); | |
e1260576 | 329 | |
93581857 | 330 | extern void mips_expand_vector_init (rtx, rtx); |
7dab511c RH |
331 | extern bool mips_expand_vec_perm_const (rtx op[4]); |
332 | extern void mips_expand_vec_unpack (rtx op[2], bool, bool); | |
333 | extern void mips_expand_vec_reduc (rtx, rtx, rtx (*)(rtx, rtx, rtx)); | |
334 | extern void mips_expand_vec_minmax (rtx, rtx, rtx, | |
335 | rtx (*) (rtx, rtx, rtx), bool); | |
93581857 | 336 | |
03a7dddb CM |
337 | extern bool mips_signed_immediate_p (unsigned HOST_WIDE_INT, int, int); |
338 | extern bool mips_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int); | |
22c4c869 CM |
339 | extern const char *umips_output_save_restore (bool, rtx); |
340 | extern bool umips_save_restore_pattern_p (bool, rtx); | |
341 | extern bool umips_load_store_pair_p (bool, rtx *); | |
342 | extern void umips_output_load_store_pair (bool, rtx *); | |
343 | extern bool umips_movep_target_p (rtx, rtx); | |
344 | extern bool umips_12bit_offset_address_p (rtx, enum machine_mode); | |
03a7dddb CM |
345 | extern bool lwsp_swsp_address_p (rtx, enum machine_mode); |
346 | extern bool m16_based_address_p (rtx, enum machine_mode, | |
347 | int (*)(rtx_def*, machine_mode)); | |
f959607b | 348 | extern rtx mips_expand_thread_pointer (rtx); |
a90c0245 RS |
349 | extern void mips16_expand_get_fcsr (rtx); |
350 | extern void mips16_expand_set_fcsr (rtx); | |
f959607b | 351 | |
0c433c31 | 352 | extern bool mips_eh_uses (unsigned int); |
e19da24c | 353 | extern bool mips_epilogue_uses (unsigned int); |
c6f971f4 | 354 | extern void mips_final_prescan_insn (rtx_insn *, rtx *, int); |
c640a3bd | 355 | extern int mips_trampoline_code_size (void); |
c376dbfb | 356 | extern void mips_function_profiler (FILE *); |
e19da24c | 357 | |
a3c7bb26 AN |
358 | typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx); |
359 | #ifdef RTX_CODE | |
360 | extern mulsidi3_gen_fn mips_mulsidi3_gen_fn (enum rtx_code); | |
361 | #endif | |
362 | ||
88657302 | 363 | #endif /* ! GCC_MIPS_PROTOS_H */ |