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bd9f1972 | 1 | /* Prototypes of target machine for GNU compiler. MIPS version. |
214be03f | 2 | Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
b52b1749 | 3 | 1999, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
66647d44 | 4 | Free Software Foundation, Inc. |
bd9f1972 KG |
5 | Contributed by A. Lichnewsky (lich@inria.inria.fr). |
6 | Changed by Michael Meissner (meissner@osf.org). | |
85f65093 | 7 | 64-bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and |
bd9f1972 KG |
8 | Brendan Eich (brendan@microunity.com). |
9 | ||
7ec022b2 | 10 | This file is part of GCC. |
bd9f1972 | 11 | |
7ec022b2 | 12 | GCC is free software; you can redistribute it and/or modify |
bd9f1972 | 13 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 14 | the Free Software Foundation; either version 3, or (at your option) |
bd9f1972 KG |
15 | any later version. |
16 | ||
7ec022b2 | 17 | GCC is distributed in the hope that it will be useful, |
bd9f1972 KG |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
23 | along with GCC; see the file COPYING3. If not see |
24 | <http://www.gnu.org/licenses/>. */ | |
bd9f1972 | 25 | |
88657302 RH |
26 | #ifndef GCC_MIPS_PROTOS_H |
27 | #define GCC_MIPS_PROTOS_H | |
bd9f1972 | 28 | |
280fcbfa RS |
29 | /* Describes how a symbol is used. |
30 | ||
31 | SYMBOL_CONTEXT_CALL | |
32 | The symbol is used as the target of a call instruction. | |
33 | ||
34 | SYMBOL_CONTEXT_LEA | |
35 | The symbol is used in a load-address operation. | |
36 | ||
37 | SYMBOL_CONTEXT_MEM | |
38 | The symbol is used as the address in a MEM. */ | |
39 | enum mips_symbol_context { | |
40 | SYMBOL_CONTEXT_CALL, | |
41 | SYMBOL_CONTEXT_LEA, | |
42 | SYMBOL_CONTEXT_MEM | |
43 | }; | |
44 | ||
e245bd81 RS |
45 | /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address. |
46 | ||
67da85da RS |
47 | SYMBOL_ABSOLUTE |
48 | The symbol's value will be calculated using absolute relocations, | |
49 | such as %hi and %lo. | |
e245bd81 | 50 | |
67da85da RS |
51 | SYMBOL_GP_RELATIVE |
52 | The symbol's value will be calculated by adding a 16-bit offset | |
53 | from $gp. | |
e245bd81 | 54 | |
67da85da RS |
55 | SYMBOL_PC_RELATIVE |
56 | The symbol's value will be calculated using a MIPS16 PC-relative | |
57 | calculation. | |
e245bd81 | 58 | |
e06e2776 RS |
59 | SYMBOL_FORCE_TO_MEM |
60 | The symbol's value must be forced to memory and loaded from there. | |
61 | ||
08e7ceb3 RS |
62 | SYMBOL_GOT_PAGE_OFST |
63 | The symbol's value will be calculated by loading an address | |
64 | from the GOT and then applying a 16-bit offset. | |
e245bd81 | 65 | |
08e7ceb3 RS |
66 | SYMBOL_GOT_DISP |
67 | The symbol's value will be loaded directly from the GOT. | |
e245bd81 RS |
68 | |
69 | SYMBOL_GOTOFF_PAGE | |
08e7ceb3 RS |
70 | An UNSPEC wrapper around a SYMBOL_GOT_PAGE_OFST. It represents the |
71 | offset from _gp of the GOT entry. | |
e245bd81 | 72 | |
08e7ceb3 RS |
73 | SYMBOL_GOTOFF_DISP |
74 | An UNSPEC wrapper around a SYMBOL_GOT_DISP. It represents the | |
e245bd81 RS |
75 | the offset from _gp of the symbol's GOT entry. |
76 | ||
77 | SYMBOL_GOTOFF_CALL | |
08e7ceb3 | 78 | Like SYMBOL_GOTOFF_DISP, but used when calling a global function. |
e245bd81 RS |
79 | The GOT entry is allowed to point to a stub rather than to the |
80 | function itself. | |
81 | ||
82 | SYMBOL_GOTOFF_LOADGP | |
83 | An UNSPEC wrapper around a function's address. It represents the | |
84 | offset of _gp from the start of the function. | |
85 | ||
69229b81 DJ |
86 | SYMBOL_TLS |
87 | A thread-local symbol. | |
88 | ||
89 | SYMBOL_TLSGD | |
90 | SYMBOL_TLSLDM | |
91 | SYMBOL_DTPREL | |
92 | SYMBOL_GOTTPREL | |
93 | SYMBOL_TPREL | |
94 | UNSPEC wrappers around SYMBOL_TLS, corresponding to the | |
95 | thread-local storage relocation operators. | |
96 | ||
c93c5160 RS |
97 | SYMBOL_32_HIGH |
98 | For a 32-bit symbolic address X, this is the value of %hi(X). | |
99 | ||
e245bd81 RS |
100 | SYMBOL_64_HIGH |
101 | For a 64-bit symbolic address X, this is the value of | |
102 | (%highest(X) << 16) + %higher(X). | |
103 | ||
104 | SYMBOL_64_MID | |
105 | For a 64-bit symbolic address X, this is the value of | |
106 | (%higher(X) << 16) + %hi(X). | |
107 | ||
108 | SYMBOL_64_LOW | |
109 | For a 64-bit symbolic address X, this is the value of | |
8cb6400c RS |
110 | (%hi(X) << 16) + %lo(X). |
111 | ||
112 | SYMBOL_HALF | |
113 | An UNSPEC wrapper around any kind of address. It represents the | |
114 | low 16 bits of that address. */ | |
e245bd81 | 115 | enum mips_symbol_type { |
67da85da RS |
116 | SYMBOL_ABSOLUTE, |
117 | SYMBOL_GP_RELATIVE, | |
118 | SYMBOL_PC_RELATIVE, | |
e06e2776 | 119 | SYMBOL_FORCE_TO_MEM, |
08e7ceb3 RS |
120 | SYMBOL_GOT_PAGE_OFST, |
121 | SYMBOL_GOT_DISP, | |
e245bd81 | 122 | SYMBOL_GOTOFF_PAGE, |
08e7ceb3 | 123 | SYMBOL_GOTOFF_DISP, |
e245bd81 RS |
124 | SYMBOL_GOTOFF_CALL, |
125 | SYMBOL_GOTOFF_LOADGP, | |
69229b81 DJ |
126 | SYMBOL_TLS, |
127 | SYMBOL_TLSGD, | |
128 | SYMBOL_TLSLDM, | |
129 | SYMBOL_DTPREL, | |
130 | SYMBOL_GOTTPREL, | |
131 | SYMBOL_TPREL, | |
c93c5160 | 132 | SYMBOL_32_HIGH, |
e245bd81 RS |
133 | SYMBOL_64_HIGH, |
134 | SYMBOL_64_MID, | |
8cb6400c RS |
135 | SYMBOL_64_LOW, |
136 | SYMBOL_HALF | |
e245bd81 | 137 | }; |
8cb6400c | 138 | #define NUM_SYMBOL_TYPES (SYMBOL_HALF + 1) |
e245bd81 | 139 | |
d9870b7e RS |
140 | /* Identifiers a style of $gp initialization sequence. |
141 | ||
142 | LOADGP_NONE | |
143 | No initialization sequence is needed. | |
144 | ||
145 | LOADGP_OLDABI | |
146 | The o32 and o64 PIC sequence (the kind traditionally generated | |
147 | by .cpload). | |
148 | ||
149 | LOADGP_NEWABI | |
150 | The n32 and n64 PIC sequence (the kind traditionally generated | |
151 | by .cpsetup). | |
152 | ||
153 | LOADGP_ABSOLUTE | |
8cb6400c RS |
154 | The GNU absolute sequence, as generated by loadgp_absolute. |
155 | ||
156 | LOADGP_RTP | |
157 | The VxWorks RTP PIC sequence, as generated by loadgp_rtp. */ | |
d9870b7e RS |
158 | enum mips_loadgp_style { |
159 | LOADGP_NONE, | |
160 | LOADGP_OLDABI, | |
161 | LOADGP_NEWABI, | |
8cb6400c RS |
162 | LOADGP_ABSOLUTE, |
163 | LOADGP_RTP | |
d9870b7e RS |
164 | }; |
165 | ||
e1260576 RS |
166 | struct mips16e_save_restore_info; |
167 | ||
08d0963a RS |
168 | /* Classifies a type of call. |
169 | ||
170 | MIPS_CALL_NORMAL | |
171 | A normal call or call_value pattern. | |
172 | ||
173 | MIPS_CALL_SIBCALL | |
174 | A sibcall or sibcall_value pattern. | |
175 | ||
176 | MIPS_CALL_EPILOGUE | |
177 | A call inserted in the epilogue. */ | |
178 | enum mips_call_type { | |
179 | MIPS_CALL_NORMAL, | |
180 | MIPS_CALL_SIBCALL, | |
181 | MIPS_CALL_EPILOGUE | |
182 | }; | |
183 | ||
280fcbfa RS |
184 | extern bool mips_symbolic_constant_p (rtx, enum mips_symbol_context, |
185 | enum mips_symbol_type *); | |
65239d20 | 186 | extern int mips_regno_mode_ok_for_base_p (int, enum machine_mode, bool); |
96a30b18 | 187 | extern bool mips_stack_address_p (rtx, enum machine_mode); |
5955b0a3 | 188 | extern int mips_address_insns (rtx, enum machine_mode, bool); |
b4966b1b | 189 | extern int mips_const_insns (rtx); |
c5cb5d18 | 190 | extern int mips_split_const_insns (rtx); |
5955b0a3 | 191 | extern int mips_load_store_insns (rtx, rtx); |
46490403 | 192 | extern int mips_idiv_insns (void); |
51e7252a | 193 | extern rtx mips_emit_move (rtx, rtx); |
08d0963a RS |
194 | extern rtx mips_pic_base_register (rtx); |
195 | extern rtx mips_got_load (rtx, rtx, enum mips_symbol_type); | |
390ea488 | 196 | extern bool mips_split_symbol (rtx, rtx, enum machine_mode, rtx *); |
e245bd81 | 197 | extern rtx mips_unspec_address (rtx, enum mips_symbol_type); |
ea462dd0 | 198 | extern void mips_move_integer (rtx, rtx, unsigned HOST_WIDE_INT); |
b4966b1b | 199 | extern bool mips_legitimize_move (enum machine_mode, rtx, rtx); |
b4966b1b RS |
200 | |
201 | extern int m16_uimm3_b (rtx, enum machine_mode); | |
202 | extern int m16_simm4_1 (rtx, enum machine_mode); | |
203 | extern int m16_nsimm4_1 (rtx, enum machine_mode); | |
204 | extern int m16_simm5_1 (rtx, enum machine_mode); | |
205 | extern int m16_nsimm5_1 (rtx, enum machine_mode); | |
206 | extern int m16_uimm5_4 (rtx, enum machine_mode); | |
207 | extern int m16_nuimm5_4 (rtx, enum machine_mode); | |
208 | extern int m16_simm8_1 (rtx, enum machine_mode); | |
209 | extern int m16_nsimm8_1 (rtx, enum machine_mode); | |
210 | extern int m16_uimm8_1 (rtx, enum machine_mode); | |
211 | extern int m16_nuimm8_1 (rtx, enum machine_mode); | |
212 | extern int m16_uimm8_m1_1 (rtx, enum machine_mode); | |
213 | extern int m16_uimm8_4 (rtx, enum machine_mode); | |
214 | extern int m16_nuimm8_4 (rtx, enum machine_mode); | |
215 | extern int m16_simm8_8 (rtx, enum machine_mode); | |
216 | extern int m16_nsimm8_8 (rtx, enum machine_mode); | |
6b7d57c7 | 217 | |
65239d20 | 218 | extern rtx mips_subword (rtx, bool); |
b4966b1b | 219 | extern bool mips_split_64bit_move_p (rtx, rtx); |
0064fbe9 | 220 | extern void mips_split_doubleword_move (rtx, rtx); |
b4966b1b | 221 | extern const char *mips_output_move (rtx, rtx); |
0c433c31 RS |
222 | extern bool mips_cfun_has_cprestore_slot_p (void); |
223 | extern bool mips_cprestore_address_p (rtx, bool); | |
224 | extern void mips_save_gp_to_cprestore_slot (rtx, rtx, rtx, rtx); | |
225 | extern void mips_restore_gp_from_cprestore_slot (rtx); | |
6b7d57c7 | 226 | #ifdef RTX_CODE |
f90b7a5a PB |
227 | extern void mips_expand_scc (rtx *); |
228 | extern void mips_expand_conditional_branch (rtx *); | |
ec4fc7ed | 229 | extern void mips_expand_vcondv2sf (rtx, rtx, rtx, enum rtx_code, rtx, rtx); |
65239d20 | 230 | extern void mips_expand_conditional_move (rtx *); |
f90b7a5a | 231 | extern void mips_expand_conditional_trap (rtx); |
6b7d57c7 | 232 | #endif |
08d0963a RS |
233 | extern bool mips_use_pic_fn_addr_reg_p (const_rtx); |
234 | extern rtx mips_expand_call (enum mips_call_type, rtx, rtx, rtx, rtx, bool); | |
235 | extern void mips_split_call (rtx, rtx); | |
65239d20 | 236 | extern void mips_expand_fcc_reload (rtx, rtx, rtx); |
b4966b1b RS |
237 | extern void mips_set_return_address (rtx, rtx); |
238 | extern bool mips_expand_block_move (rtx, rtx, rtx); | |
df770e04 | 239 | extern void mips_expand_synci_loop (rtx, rtx); |
b4966b1b | 240 | |
65239d20 RS |
241 | extern void mips_init_cumulative_args (CUMULATIVE_ARGS *, tree); |
242 | extern void mips_function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, | |
243 | tree, int); | |
244 | extern rtx mips_function_arg (const CUMULATIVE_ARGS *, | |
245 | enum machine_mode, tree, int); | |
246 | extern int mips_function_arg_boundary (enum machine_mode, tree); | |
586de218 | 247 | extern bool mips_pad_arg_upward (enum machine_mode, const_tree); |
648bb159 | 248 | extern bool mips_pad_reg_upward (enum machine_mode, tree); |
b4966b1b | 249 | |
65239d20 RS |
250 | extern bool mips_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT, |
251 | HOST_WIDE_INT); | |
252 | extern bool mips_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT, | |
253 | HOST_WIDE_INT); | |
9226543b | 254 | extern bool mips_mem_fits_mode_p (enum machine_mode mode, rtx x); |
65239d20 | 255 | extern void mips_override_options (void); |
b4966b1b RS |
256 | extern void mips_conditional_register_usage (void); |
257 | extern void mips_order_regs_for_local_alloc (void); | |
258 | extern HOST_WIDE_INT mips_debugger_offset (rtx, HOST_WIDE_INT); | |
259 | ||
cf5fb4b0 RS |
260 | extern void mips_push_asm_switch (struct mips_asm_switch *); |
261 | extern void mips_pop_asm_switch (struct mips_asm_switch *); | |
65239d20 RS |
262 | extern void mips_print_operand (FILE *, rtx, int); |
263 | extern void mips_print_operand_address (FILE *, rtx); | |
f8fdb503 | 264 | extern void mips_output_external (FILE *, tree, const char *); |
b4966b1b | 265 | extern void mips_output_filename (FILE *, const char *); |
65239d20 | 266 | extern void mips_output_ascii (FILE *, const char *, size_t); |
35f5add9 RS |
267 | extern void mips_output_aligned_decl_common (FILE *, tree, const char *, |
268 | unsigned HOST_WIDE_INT, | |
269 | unsigned int); | |
48b2e0a7 RS |
270 | extern void mips_declare_common_object (FILE *, const char *, |
271 | const char *, unsigned HOST_WIDE_INT, | |
272 | unsigned int, bool); | |
b4966b1b | 273 | extern void mips_declare_object (FILE *, const char *, const char *, |
99a3237a | 274 | const char *, ...) ATTRIBUTE_PRINTF_4; |
b4966b1b RS |
275 | extern void mips_declare_object_name (FILE *, const char *, tree); |
276 | extern void mips_finish_declare_object (FILE *, tree, int, int); | |
277 | ||
96a30b18 | 278 | extern bool mips_small_data_pattern_p (rtx); |
108b61d5 | 279 | extern rtx mips_rewrite_small_data (rtx); |
e88fb323 | 280 | extern HOST_WIDE_INT mips_initial_elimination_offset (int, int); |
b4966b1b | 281 | extern rtx mips_return_addr (int, rtx); |
0c433c31 | 282 | extern bool mips_must_initialize_gp_p (void); |
d9870b7e | 283 | extern enum mips_loadgp_style mips_current_loadgp_style (void); |
0c433c31 | 284 | extern void mips_emit_save_slot_move (rtx, rtx, rtx); |
b4966b1b | 285 | extern void mips_expand_prologue (void); |
2f7e2abb | 286 | extern void mips_expand_before_return (void); |
65239d20 RS |
287 | extern void mips_expand_epilogue (bool); |
288 | extern bool mips_can_use_return_insn (void); | |
cde0f3fd | 289 | extern rtx mips_function_value (const_tree, const_tree, enum machine_mode); |
b4966b1b RS |
290 | |
291 | extern bool mips_cannot_change_mode_class (enum machine_mode, | |
292 | enum machine_mode, enum reg_class); | |
a6008bd8 | 293 | extern bool mips_dangerous_for_la25_p (rtx); |
e5a2b69d | 294 | extern bool mips_modes_tieable_p (enum machine_mode, enum machine_mode); |
a6008bd8 | 295 | extern enum reg_class mips_preferred_reload_class (rtx, enum reg_class); |
b4966b1b RS |
296 | extern enum reg_class mips_secondary_reload_class (enum reg_class, |
297 | enum machine_mode, | |
65239d20 | 298 | rtx, bool); |
b4966b1b | 299 | extern int mips_class_max_nregs (enum reg_class, enum machine_mode); |
b4966b1b RS |
300 | extern int mips_register_move_cost (enum machine_mode, enum reg_class, |
301 | enum reg_class); | |
302 | ||
303 | extern int mips_adjust_insn_length (rtx, int); | |
0c433c31 | 304 | extern void mips_output_load_label (rtx); |
a8c1d5f8 RS |
305 | extern const char *mips_output_conditional_branch (rtx, rtx *, const char *, |
306 | const char *); | |
307 | extern const char *mips_output_order_conditional_branch (rtx, rtx *, bool); | |
6f5a62e9 RS |
308 | extern const char *mips_output_sync (void); |
309 | extern const char *mips_output_sync_loop (rtx, rtx *); | |
310 | extern unsigned int mips_sync_loop_insns (rtx, rtx *); | |
b4966b1b RS |
311 | extern const char *mips_output_division (const char *, rtx *); |
312 | extern unsigned int mips_hard_regno_nregs (int, enum machine_mode); | |
39ba1719 | 313 | extern bool mips_linked_madd_p (rtx, rtx); |
65239d20 | 314 | extern bool mips_store_data_bypass_p (rtx, rtx); |
4767c570 | 315 | extern rtx mips_prefetch_cookie (rtx, rtx); |
b4966b1b | 316 | |
3c7404d3 | 317 | extern void irix_asm_output_align (FILE *, unsigned); |
b4966b1b RS |
318 | extern const char *current_section_name (void); |
319 | extern unsigned int current_section_flags (void); | |
65239d20 | 320 | extern bool mips_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT); |
bd9f1972 | 321 | |
e1260576 RS |
322 | extern const char *mips16e_output_save_restore (rtx, HOST_WIDE_INT); |
323 | extern bool mips16e_save_restore_pattern_p (rtx, HOST_WIDE_INT, | |
324 | struct mips16e_save_restore_info *); | |
49912bcd AN |
325 | |
326 | extern bool mask_low_and_shift_p (enum machine_mode, rtx, rtx, int); | |
327 | extern int mask_low_and_shift_len (enum machine_mode, rtx, rtx); | |
b2c9d70f | 328 | extern bool and_operands_ok (enum machine_mode, rtx, rtx); |
49912bcd | 329 | |
06d19617 DD |
330 | union mips_gen_fn_ptrs |
331 | { | |
332 | rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx); | |
333 | rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx); | |
334 | rtx (*fn_4) (rtx, rtx, rtx, rtx); | |
335 | }; | |
336 | ||
337 | extern void mips_expand_atomic_qihi (union mips_gen_fn_ptrs, | |
338 | rtx, rtx, rtx, rtx); | |
e1260576 | 339 | |
93581857 MS |
340 | extern void mips_expand_vector_init (rtx, rtx); |
341 | ||
0c433c31 | 342 | extern bool mips_eh_uses (unsigned int); |
e19da24c | 343 | extern bool mips_epilogue_uses (unsigned int); |
1afc5373 | 344 | extern void mips_final_prescan_insn (rtx, rtx *, int); |
e19da24c | 345 | |
88657302 | 346 | #endif /* ! GCC_MIPS_PROTOS_H */ |