1 /* Prototypes for exported functions of Andes NDS32 cpu for GNU compiler
2 Copyright (C) 2012-2023 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21
22 /* ------------------------------------------------------------------------ */
23
24 /* Defining Data Structures for Per-function Information. */
25
26 extern void nds32_init_expanders (void);
27
28
29 /* Register Usage. */
30
31 /* -- Order of Allocation of Registers. */
32 extern void nds32_adjust_reg_alloc_order (void);
33
34 /* Register Classes. */
35
36 extern enum reg_class nds32_regno_reg_class (int);
37
38
39 /* Stack Layout and Calling Conventions. */
40
41 /* -- Basic Stack Layout. */
42
43 extern rtx nds32_dynamic_chain_address (rtx);
44 extern rtx nds32_return_addr_rtx (int, rtx);
45
46 /* -- Eliminating Frame Pointer and Arg Pointer. */
47
48 extern HOST_WIDE_INT nds32_initial_elimination_offset (unsigned int,
49 unsigned int);
50
51 /* -- Passing Arguments in Registers. */
52
53 extern void nds32_init_cumulative_args (CUMULATIVE_ARGS *,
54 tree, rtx, tree, int);
55
56 /* -- Function Entry and Exit. */
57
58 extern void nds32_expand_prologue (void);
59 extern void nds32_expand_epilogue (bool);
60 extern void nds32_expand_prologue_v3push (void);
61 extern void nds32_expand_epilogue_v3pop (bool);
62 extern void nds32_emit_push_fpr_callee_saved (int);
63 extern void nds32_emit_pop_fpr_callee_saved (int);
64 extern void nds32_emit_v3pop_fpr_callee_saved (int);
65
66 /* Controlling Debugging Information Format. */
67
68 extern unsigned int nds32_debugger_regno (unsigned int);
69
70 /* ------------------------------------------------------------------------ */
71
72 /* Auxiliary functions for manipulation DI mode. */
73
74 extern rtx nds32_di_high_part_subreg(rtx);
75 extern rtx nds32_di_low_part_subreg(rtx);
76
77 /* Auxiliary functions for expanding rtl used in nds32-multiple.md. */
78
79 extern rtx nds32_expand_load_multiple (int, int, rtx, rtx, bool, rtx *);
80 extern rtx nds32_expand_store_multiple (int, int, rtx, rtx, bool, rtx *);
81 extern bool nds32_expand_cpymemsi (rtx, rtx, rtx, rtx);
82 extern bool nds32_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx);
83 extern bool nds32_expand_strlen (rtx, rtx, rtx, rtx);
84
85 /* Auxiliary functions for expand unalign load instruction. */
86
87 extern void nds32_expand_unaligned_load (rtx *, enum machine_mode);
88
89 /* Auxiliary functions for expand unalign store instruction. */
90
91 extern void nds32_expand_unaligned_store (rtx *, enum machine_mode);
92
93 /* Auxiliary functions for multiple load/store predicate checking. */
94
95 extern bool nds32_valid_multiple_load_store_p (rtx, bool, bool);
96
97 /* Auxiliary functions for guard function checking in pipelines.md. */
98
99 extern bool nds32_n7_load_to_ii_p (rtx_insn *, rtx_insn *);
100 extern bool nds32_n7_last_load_to_ii_p (rtx_insn *, rtx_insn *);
101
102 extern bool nds32_n8_load_to_ii_p (rtx_insn *, rtx_insn *);
103 extern bool nds32_n8_load_bi_to_ii_p (rtx_insn *, rtx_insn *);
104 extern bool nds32_n8_load_to_ex_p (rtx_insn *, rtx_insn *);
105 extern bool nds32_n8_ex_to_ii_p (rtx_insn *, rtx_insn *);
106 extern bool nds32_n8_last_load_to_ii_p (rtx_insn *, rtx_insn *);
107 extern bool nds32_n8_last_load_two_to_ii_p (rtx_insn *, rtx_insn *);
108 extern bool nds32_n8_last_load_to_ex_p (rtx_insn *, rtx_insn *);
109
110 extern bool nds32_e8_load_to_ii_p (rtx_insn *, rtx_insn *);
111 extern bool nds32_e8_load_to_ex_p (rtx_insn *, rtx_insn *);
112 extern bool nds32_e8_ex_to_ii_p (rtx_insn *, rtx_insn *);
113 extern bool nds32_e8_last_load_to_ii_p (rtx_insn *, rtx_insn *);
114 extern bool nds32_e8_last_load_to_ex_p (rtx_insn *, rtx_insn *);
115
116 extern bool nds32_n9_2r1w_mm_to_ex_p (rtx_insn *, rtx_insn *);
117 extern bool nds32_n9_3r2w_mm_to_ex_p (rtx_insn *, rtx_insn *);
118 extern bool nds32_n9_last_load_to_ex_p (rtx_insn *, rtx_insn *);
119
120 extern bool nds32_n10_ex_to_ex_p (rtx_insn *, rtx_insn *);
121 extern bool nds32_n10_mm_to_ex_p (rtx_insn *, rtx_insn *);
122 extern bool nds32_n10_last_load_to_ex_p (rtx_insn *, rtx_insn *);
123
124 extern bool nds32_gw_ex_to_ex_p (rtx_insn *, rtx_insn *);
125 extern bool nds32_gw_mm_to_ex_p (rtx_insn *, rtx_insn *);
126 extern bool nds32_gw_last_load_to_ex_p (rtx_insn *, rtx_insn *);
127
128 extern bool nds32_n13_e2_to_e1_p (rtx_insn *, rtx_insn *);
129 extern bool nds32_n13_load_to_e1_p (rtx_insn *, rtx_insn *);
130 extern bool nds32_n13_load_to_e2_p (rtx_insn *, rtx_insn *);
131 extern bool nds32_n13_last_load_to_e1_p (rtx_insn *, rtx_insn *);
132 extern bool nds32_n13_last_load_to_e2_p (rtx_insn *, rtx_insn *);
133 extern bool nds32_n13_last_two_load_to_e1_p (rtx_insn *, rtx_insn *);
134
135 /* Auxiliary functions for stack operation predicate checking. */
136
137 extern bool nds32_valid_stack_push_pop_p (rtx, bool);
138
139 /* Auxiliary functions for bit operation detection. */
140
141 extern bool nds32_can_use_bclr_p (HOST_WIDE_INT);
142 extern bool nds32_can_use_bset_p (HOST_WIDE_INT);
143 extern bool nds32_can_use_btgl_p (HOST_WIDE_INT);
144
145 extern bool nds32_can_use_bitci_p (HOST_WIDE_INT);
146
147 extern bool nds32_const_double_range_ok_p (rtx, machine_mode,
148 HOST_WIDE_INT, HOST_WIDE_INT);
149
150 extern bool nds32_const_unspec_p (rtx x);
151
152 /* Auxiliary function for 'Computing the Length of an Insn'. */
153
154 extern int nds32_adjust_insn_length (rtx_insn *, int);
155
156 /* Auxiliary functions for FP_AS_GP detection. */
157
158 extern bool nds32_symbol_load_store_p (rtx_insn *);
159 extern bool nds32_naked_function_p (tree);
160
161 /* Auxiliary functions for jump table generation. */
162
163 extern const char *nds32_output_casesi_pc_relative (rtx *);
164 extern const char *nds32_output_casesi (rtx *);
165
166 /* Auxiliary functions for conditional branch generation. */
167
168 extern enum nds32_expand_result_type nds32_expand_cbranch (rtx *);
169 extern enum nds32_expand_result_type nds32_expand_cstore (rtx *);
170 extern void nds32_expand_float_cbranch (rtx *);
171 extern void nds32_expand_float_cstore (rtx *);
172
173 /* Auxiliary functions for conditional move generation. */
174
175 extern enum nds32_expand_result_type nds32_expand_movcc (rtx *);
176 extern void nds32_expand_float_movcc (rtx *);
177
178 /* Auxiliary functions for expand extv/insv instruction. */
179
180 extern enum nds32_expand_result_type nds32_expand_extv (rtx *);
181 extern enum nds32_expand_result_type nds32_expand_insv (rtx *);
182
183 /* Auxiliary functions for expand PIC instruction. */
184
185 extern void nds32_expand_pic_move (rtx *);
186
187 /* Auxiliary functions to legitimize PIC address. */
188
189 extern rtx nds32_legitimize_pic_address (rtx);
190
191 /* Auxiliary functions for expand TLS instruction. */
192
193 extern void nds32_expand_tls_move (rtx *);
194
195 /* Auxiliary functions to legitimize TLS address. */
196
197 extern rtx nds32_legitimize_tls_address (rtx);
198
199 /* Auxiliary functions to identify thread-local symbol. */
200
201 extern bool nds32_tls_referenced_p (rtx);
202
203 /* Auxiliary functions for expand ICT instruction. */
204
205 extern void nds32_expand_ict_move (rtx *);
206
207 /* Auxiliary functions to legitimize address for indirect-call symbol. */
208
209 extern rtx nds32_legitimize_ict_address (rtx);
210
211 /* Auxiliary functions to identify indirect-call symbol. */
212
213 extern bool nds32_indirect_call_referenced_p (rtx);
214
215 /* Auxiliary functions to identify long-call symbol. */
216 extern bool nds32_long_call_p (rtx);
217
218 /* Auxiliary functions to identify SYMBOL_REF and LABEL_REF pattern. */
219
220 extern bool symbolic_reference_mentioned_p (rtx);
221
222 /* Auxiliary functions to identify conditional move comparison operand. */
223
224 extern int nds32_cond_move_p (rtx);
225
226 /* Auxiliary functions to identify 16 bit addresing mode. */
227
228 extern enum nds32_16bit_address_type nds32_mem_format (rtx);
229
230 /* Auxiliary functions to identify floating-point addresing mode. */
231
232 extern bool nds32_float_mem_operand_p (rtx);
233
234 /* Auxiliary functions to output assembly code. */
235
236 extern const char *nds32_output_16bit_store (rtx *, int);
237 extern const char *nds32_output_16bit_load (rtx *, int);
238 extern const char *nds32_output_32bit_store (rtx *, int);
239 extern const char *nds32_output_32bit_load (rtx *, int);
240 extern const char *nds32_output_32bit_load_s (rtx *, int);
241 extern const char *nds32_output_float_load(rtx *);
242 extern const char *nds32_output_float_store(rtx *);
243 extern const char *nds32_output_smw_single_word (rtx *);
244 extern const char *nds32_output_smw_double_word (rtx *);
245 extern const char *nds32_output_lmw_single_word (rtx *);
246 extern const char *nds32_output_double (rtx *, bool);
247 extern const char *nds32_output_cbranchsi4_equality_zero (rtx_insn *, rtx *);
248 extern const char *nds32_output_cbranchsi4_equality_reg (rtx_insn *, rtx *);
249 extern const char *nds32_output_cbranchsi4_equality_reg_or_const_int (rtx_insn *,
250 rtx *);
251 extern const char *nds32_output_cbranchsi4_greater_less_zero (rtx_insn *, rtx *);
252
253 extern const char *nds32_output_unpkd8 (rtx, rtx, rtx, rtx, bool);
254
255 extern const char *nds32_output_call (rtx, rtx *, rtx,
256 const char *, const char *, bool);
257 extern const char *nds32_output_tls_desc (rtx *);
258 extern const char *nds32_output_tls_ie (rtx *);
259 extern const char *nds32_output_symrel (rtx *);
260
261 /* Auxiliary functions to output stack push/pop instruction. */
262
263 extern const char *nds32_output_stack_push (rtx);
264 extern const char *nds32_output_stack_pop (rtx);
265 extern const char *nds32_output_return (void);
266
267
268 /* Auxiliary functions to split/output sms pattern. */
269 extern bool nds32_need_split_sms_p (rtx, rtx, rtx, rtx);
270 extern const char *nds32_output_sms (rtx, rtx, rtx, rtx);
271 extern void nds32_split_sms (rtx, rtx, rtx, rtx, rtx, rtx, rtx);
272
273 /* Auxiliary functions to split double word RTX pattern. */
274
275 extern void nds32_spilt_doubleword (rtx *, bool);
276 extern void nds32_split_ashiftdi3 (rtx, rtx, rtx);
277 extern void nds32_split_ashiftrtdi3 (rtx, rtx, rtx);
278 extern void nds32_split_lshiftrtdi3 (rtx, rtx, rtx);
279 extern void nds32_split_rotatertdi3 (rtx, rtx, rtx);
280
281 /* Auxiliary functions to split large constant RTX pattern. */
282
283 extern void nds32_expand_constant (machine_mode,
284 HOST_WIDE_INT, rtx, rtx);
285
286 /* Auxiliary functions to check using return with null epilogue. */
287
288 extern int nds32_can_use_return_insn (void);
289 extern scalar_int_mode nds32_case_vector_shorten_mode (int, int, rtx);
290
291 /* Auxiliary functions to decide output alignment or not. */
292
293 extern int nds32_target_alignment (rtx_insn *);
294 extern unsigned int nds32_data_alignment (tree, unsigned int);
295 extern unsigned int nds32_local_alignment (tree, unsigned int);
296
297 /* Auxiliary functions to expand builtin functions. */
298
299 extern void nds32_init_builtins_impl (void);
300 extern rtx nds32_expand_builtin_impl (tree, rtx, rtx,
301 machine_mode, int);
302 extern tree nds32_builtin_decl_impl (unsigned, bool);
303
304 /* Auxiliary functions for ISR implementation. */
305
306 extern void nds32_check_isr_attrs_conflict (tree, tree);
307 extern void nds32_construct_isr_vectors_information (tree, const char *);
308 extern void nds32_asm_file_start_for_isr (void);
309 extern void nds32_asm_file_end_for_isr (void);
310 extern bool nds32_isr_function_p (tree);
311 extern bool nds32_isr_function_critical_p (tree);
312
313 /* Auxiliary functions for cost calculation. */
314
315 extern void nds32_init_rtx_costs (void);
316 extern bool nds32_rtx_costs_impl (rtx, machine_mode, int, int, int *, bool);
317 extern int nds32_address_cost_impl (rtx, machine_mode, addr_space_t, bool);
318
319 /* Auxiliary functions for pre-define marco. */
320 extern void nds32_cpu_cpp_builtins(struct cpp_reader *);
321
322 /* Auxiliary functions for const_vector's constraints. */
323
324 extern HOST_WIDE_INT const_vector_to_hwint (rtx);
325 extern bool nds32_valid_CVp5_p (rtx);
326 extern bool nds32_valid_CVs5_p (rtx);
327 extern bool nds32_valid_CVs2_p (rtx);
328 extern bool nds32_valid_CVhi_p (rtx);
329
330 /* Auxiliary functions for lwm/smw. */
331
332 extern bool nds32_valid_smw_lwm_base_p (rtx);
333
334 extern bool nds32_split_double_word_load_store_p (rtx *,bool);
335
336 namespace nds32 {
337
338 extern rtx extract_pattern_from_insn (rtx);
339
340 size_t parallel_elements (rtx);
341 rtx parallel_element (rtx, int);
342 bool load_single_p (rtx_insn *);
343 bool store_single_p (rtx_insn *);
344 bool load_double_p (rtx_insn *);
345 bool store_double_p (rtx_insn *);
346 bool store_offset_reg_p (rtx_insn *);
347 bool post_update_insn_p (rtx_insn *);
348 bool immed_offset_p (rtx);
349 int find_post_update_rtx (rtx_insn *);
350 rtx extract_mem_rtx (rtx_insn *);
351 rtx extract_base_reg (rtx_insn *);
352 rtx extract_offset_rtx (rtx_insn *);
353
354 rtx extract_shift_reg (rtx);
355
356 bool movd44_insn_p (rtx_insn *);
357 rtx extract_movd44_odd_reg (rtx_insn *);
358
359 rtx extract_mac_non_acc_rtx (rtx_insn *);
360
361 bool divmod_p (rtx_insn *);
362
363 rtx extract_branch_target_rtx (rtx_insn *);
364 rtx extract_branch_condition_rtx (rtx_insn *);
365 } // namespace nds32
366
367 extern bool nds32_use_load_post_increment(machine_mode);
368
369 /* Functions for create nds32 specific optimization pass. */
370 extern rtl_opt_pass *make_pass_nds32_relax_opt (gcc::context *);
371 extern rtl_opt_pass *make_pass_nds32_fp_as_gp (gcc::context *);
372
373 extern int nds32_alloc_relax_group_id ();
374
375 /* ------------------------------------------------------------------------ */