1 /* Subroutines used for code generation on TI MSP430 processors.
2 Copyright (C) 2012-2017 Free Software Foundation, Inc.
3 Contributed by Red Hat.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
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/>. */
23 #include "coretypes.h"
28 #include "gimple-expr.h"
34 #include "diagnostic-core.h"
35 #include "fold-const.h"
36 #include "stor-layout.h"
41 #include "langhooks.h"
44 /* This file should be included last. */
45 #include "target-def.h"
48 static void msp430_compute_frame_info (void);
52 /* Run-time Target Specification. */
56 struct GTY(()) machine_function
58 /* If set, the rest of the fields have been computed. */
60 /* Which registers need to be saved in the pro/epilogue. */
61 int need_to_save
[FIRST_PSEUDO_REGISTER
];
63 /* These fields describe the frame layout... */
65 /* 2/4 bytes for saved PC */
69 int framesize_outgoing
;
73 /* How much we adjust the stack when returning from an exception
78 /* This is our init_machine_status, as set in
79 msp_option_override. */
80 static struct machine_function
*
81 msp430_init_machine_status (void)
83 struct machine_function
*m
;
85 m
= ggc_cleared_alloc
<machine_function
> ();
90 #undef TARGET_OPTION_OVERRIDE
91 #define TARGET_OPTION_OVERRIDE msp430_option_override
93 /* This is a copy of the same data structure found in gas/config/tc-msp430.c
94 Also another (sort-of) copy can be found in gcc/config/msp430/t-msp430
95 Keep these three structures in sync.
96 The data in this structure has been extracted from the devices.csv file
97 released by TI, updated as of March 2016. */
99 struct msp430_mcu_data
102 unsigned int revision
; /* 0=> MSP430, 1=>MSP430X, 2=> MSP430Xv2. */
103 unsigned int hwmpy
; /* 0=>none, 1=>16-bit, 2=>16-bit w/sign extend, 4=>32-bit, 8=> 32-bit (5xx). */
107 { "cc430f5123",2,8 },
108 { "cc430f5125",2,8 },
109 { "cc430f5133",2,8 },
110 { "cc430f5135",2,8 },
111 { "cc430f5137",2,8 },
112 { "cc430f5143",2,8 },
113 { "cc430f5145",2,8 },
114 { "cc430f5147",2,8 },
115 { "cc430f6125",2,8 },
116 { "cc430f6126",2,8 },
117 { "cc430f6127",2,8 },
118 { "cc430f6135",2,8 },
119 { "cc430f6137",2,8 },
120 { "cc430f6143",2,8 },
121 { "cc430f6145",2,8 },
122 { "cc430f6147",2,8 },
123 { "msp430afe221",0,2 },
124 { "msp430afe222",0,2 },
125 { "msp430afe223",0,2 },
126 { "msp430afe231",0,2 },
127 { "msp430afe232",0,2 },
128 { "msp430afe233",0,2 },
129 { "msp430afe251",0,2 },
130 { "msp430afe252",0,2 },
131 { "msp430afe253",0,2 },
132 { "msp430bt5190",2,8 },
133 { "msp430c091",0,0 },
134 { "msp430c092",0,0 },
135 { "msp430c111",0,0 },
136 { "msp430c1111",0,0 },
137 { "msp430c112",0,0 },
138 { "msp430c1121",0,0 },
139 { "msp430c1331",0,0 },
140 { "msp430c1351",0,0 },
141 { "msp430c311s",0,0 },
142 { "msp430c312",0,0 },
143 { "msp430c313",0,0 },
144 { "msp430c314",0,0 },
145 { "msp430c315",0,0 },
146 { "msp430c323",0,0 },
147 { "msp430c325",0,0 },
148 { "msp430c336",0,1 },
149 { "msp430c337",0,1 },
150 { "msp430c412",0,0 },
151 { "msp430c413",0,0 },
152 { "msp430cg4616",1,1 },
153 { "msp430cg4617",1,1 },
154 { "msp430cg4618",1,1 },
155 { "msp430cg4619",1,1 },
156 { "msp430e112",0,0 },
157 { "msp430e313",0,0 },
158 { "msp430e315",0,0 },
159 { "msp430e325",0,0 },
160 { "msp430e337",0,1 },
161 { "msp430f110",0,0 },
162 { "msp430f1101",0,0 },
163 { "msp430f1101a",0,0 },
164 { "msp430f1111",0,0 },
165 { "msp430f1111a",0,0 },
166 { "msp430f112",0,0 },
167 { "msp430f1121",0,0 },
168 { "msp430f1121a",0,0 },
169 { "msp430f1122",0,0 },
170 { "msp430f1132",0,0 },
171 { "msp430f122",0,0 },
172 { "msp430f1222",0,0 },
173 { "msp430f123",0,0 },
174 { "msp430f1232",0,0 },
175 { "msp430f133",0,0 },
176 { "msp430f135",0,0 },
177 { "msp430f147",0,1 },
178 { "msp430f1471",0,1 },
179 { "msp430f148",0,1 },
180 { "msp430f1481",0,1 },
181 { "msp430f149",0,1 },
182 { "msp430f1491",0,1 },
183 { "msp430f155",0,0 },
184 { "msp430f156",0,0 },
185 { "msp430f157",0,0 },
186 { "msp430f1610",0,1 },
187 { "msp430f1611",0,1 },
188 { "msp430f1612",0,1 },
189 { "msp430f167",0,1 },
190 { "msp430f168",0,1 },
191 { "msp430f169",0,1 },
192 { "msp430f2001",0,0 },
193 { "msp430f2002",0,0 },
194 { "msp430f2003",0,0 },
195 { "msp430f2011",0,0 },
196 { "msp430f2012",0,0 },
197 { "msp430f2013",0,0 },
198 { "msp430f2101",0,0 },
199 { "msp430f2111",0,0 },
200 { "msp430f2112",0,0 },
201 { "msp430f2121",0,0 },
202 { "msp430f2122",0,0 },
203 { "msp430f2131",0,0 },
204 { "msp430f2132",0,0 },
205 { "msp430f2232",0,0 },
206 { "msp430f2234",0,0 },
207 { "msp430f2252",0,0 },
208 { "msp430f2254",0,0 },
209 { "msp430f2272",0,0 },
210 { "msp430f2274",0,0 },
211 { "msp430f233",0,2 },
212 { "msp430f2330",0,2 },
213 { "msp430f235",0,2 },
214 { "msp430f2350",0,2 },
215 { "msp430f2370",0,2 },
216 { "msp430f2410",0,2 },
217 { "msp430f2416",1,2 },
218 { "msp430f2417",1,2 },
219 { "msp430f2418",1,2 },
220 { "msp430f2419",1,2 },
221 { "msp430f247",0,2 },
222 { "msp430f2471",0,2 },
223 { "msp430f248",0,2 },
224 { "msp430f2481",0,2 },
225 { "msp430f249",0,2 },
226 { "msp430f2491",0,2 },
227 { "msp430f2616",1,2 },
228 { "msp430f2617",1,2 },
229 { "msp430f2618",1,2 },
230 { "msp430f2619",1,2 },
231 { "msp430f412",0,0 },
232 { "msp430f413",0,0 },
233 { "msp430f4132",0,0 },
234 { "msp430f415",0,0 },
235 { "msp430f4152",0,0 },
236 { "msp430f417",0,0 },
237 { "msp430f423",0,1 },
238 { "msp430f423a",0,1 },
239 { "msp430f425",0,1 },
240 { "msp430f4250",0,0 },
241 { "msp430f425a",0,1 },
242 { "msp430f4260",0,0 },
243 { "msp430f427",0,1 },
244 { "msp430f4270",0,0 },
245 { "msp430f427a",0,1 },
246 { "msp430f435",0,0 },
247 { "msp430f4351",0,0 },
248 { "msp430f436",0,0 },
249 { "msp430f4361",0,0 },
250 { "msp430f437",0,0 },
251 { "msp430f4371",0,0 },
252 { "msp430f438",0,0 },
253 { "msp430f439",0,0 },
254 { "msp430f447",0,1 },
255 { "msp430f448",0,1 },
256 { "msp430f4481",0,1 },
257 { "msp430f449",0,1 },
258 { "msp430f4491",0,1 },
259 { "msp430f4616",1,1 },
260 { "msp430f46161",1,1 },
261 { "msp430f4617",1,1 },
262 { "msp430f46171",1,1 },
263 { "msp430f4618",1,1 },
264 { "msp430f46181",1,1 },
265 { "msp430f4619",1,1 },
266 { "msp430f46191",1,1 },
267 { "msp430f47126",1,4 },
268 { "msp430f47127",1,4 },
269 { "msp430f47163",1,4 },
270 { "msp430f47166",1,4 },
271 { "msp430f47167",1,4 },
272 { "msp430f47173",1,4 },
273 { "msp430f47176",1,4 },
274 { "msp430f47177",1,4 },
275 { "msp430f47183",1,4 },
276 { "msp430f47186",1,4 },
277 { "msp430f47187",1,4 },
278 { "msp430f47193",1,4 },
279 { "msp430f47196",1,4 },
280 { "msp430f47197",1,4 },
281 { "msp430f477",0,0 },
282 { "msp430f478",0,0 },
283 { "msp430f4783",0,4 },
284 { "msp430f4784",0,4 },
285 { "msp430f479",0,0 },
286 { "msp430f4793",0,4 },
287 { "msp430f4794",0,4 },
288 { "msp430f5131",2,8 },
289 { "msp430f5132",2,8 },
290 { "msp430f5151",2,8 },
291 { "msp430f5152",2,8 },
292 { "msp430f5171",2,8 },
293 { "msp430f5172",2,8 },
294 { "msp430f5212",2,8 },
295 { "msp430f5213",2,8 },
296 { "msp430f5214",2,8 },
297 { "msp430f5217",2,8 },
298 { "msp430f5218",2,8 },
299 { "msp430f5219",2,8 },
300 { "msp430f5222",2,8 },
301 { "msp430f5223",2,8 },
302 { "msp430f5224",2,8 },
303 { "msp430f5227",2,8 },
304 { "msp430f5228",2,8 },
305 { "msp430f5229",2,8 },
306 { "msp430f5232",2,8 },
307 { "msp430f5234",2,8 },
308 { "msp430f5237",2,8 },
309 { "msp430f5239",2,8 },
310 { "msp430f5242",2,8 },
311 { "msp430f5244",2,8 },
312 { "msp430f5247",2,8 },
313 { "msp430f5249",2,8 },
314 { "msp430f5252",2,8 },
315 { "msp430f5253",2,8 },
316 { "msp430f5254",2,8 },
317 { "msp430f5255",2,8 },
318 { "msp430f5256",2,8 },
319 { "msp430f5257",2,8 },
320 { "msp430f5258",2,8 },
321 { "msp430f5259",2,8 },
322 { "msp430f5304",2,8 },
323 { "msp430f5308",2,8 },
324 { "msp430f5309",2,8 },
325 { "msp430f5310",2,8 },
326 { "msp430f5324",2,8 },
327 { "msp430f5325",2,8 },
328 { "msp430f5326",2,8 },
329 { "msp430f5327",2,8 },
330 { "msp430f5328",2,8 },
331 { "msp430f5329",2,8 },
332 { "msp430f5333",2,8 },
333 { "msp430f5335",2,8 },
334 { "msp430f5336",2,8 },
335 { "msp430f5338",2,8 },
336 { "msp430f5340",2,8 },
337 { "msp430f5341",2,8 },
338 { "msp430f5342",2,8 },
339 { "msp430f5358",2,8 },
340 { "msp430f5359",2,8 },
341 { "msp430f5418",2,8 },
342 { "msp430f5418a",2,8 },
343 { "msp430f5419",2,8 },
344 { "msp430f5419a",2,8 },
345 { "msp430f5435",2,8 },
346 { "msp430f5435a",2,8 },
347 { "msp430f5436",2,8 },
348 { "msp430f5436a",2,8 },
349 { "msp430f5437",2,8 },
350 { "msp430f5437a",2,8 },
351 { "msp430f5438",2,8 },
352 { "msp430f5438a",2,8 },
353 { "msp430f5500",2,8 },
354 { "msp430f5501",2,8 },
355 { "msp430f5502",2,8 },
356 { "msp430f5503",2,8 },
357 { "msp430f5504",2,8 },
358 { "msp430f5505",2,8 },
359 { "msp430f5506",2,8 },
360 { "msp430f5507",2,8 },
361 { "msp430f5508",2,8 },
362 { "msp430f5509",2,8 },
363 { "msp430f5510",2,8 },
364 { "msp430f5513",2,8 },
365 { "msp430f5514",2,8 },
366 { "msp430f5515",2,8 },
367 { "msp430f5517",2,8 },
368 { "msp430f5519",2,8 },
369 { "msp430f5521",2,8 },
370 { "msp430f5522",2,8 },
371 { "msp430f5524",2,8 },
372 { "msp430f5525",2,8 },
373 { "msp430f5526",2,8 },
374 { "msp430f5527",2,8 },
375 { "msp430f5528",2,8 },
376 { "msp430f5529",2,8 },
377 { "msp430f5630",2,8 },
378 { "msp430f5631",2,8 },
379 { "msp430f5632",2,8 },
380 { "msp430f5633",2,8 },
381 { "msp430f5634",2,8 },
382 { "msp430f5635",2,8 },
383 { "msp430f5636",2,8 },
384 { "msp430f5637",2,8 },
385 { "msp430f5638",2,8 },
386 { "msp430f5658",2,8 },
387 { "msp430f5659",2,8 },
388 { "msp430f5xx_6xxgeneric",2,8 },
389 { "msp430f6433",2,8 },
390 { "msp430f6435",2,8 },
391 { "msp430f6436",2,8 },
392 { "msp430f6438",2,8 },
393 { "msp430f6458",2,8 },
394 { "msp430f6459",2,8 },
395 { "msp430f6630",2,8 },
396 { "msp430f6631",2,8 },
397 { "msp430f6632",2,8 },
398 { "msp430f6633",2,8 },
399 { "msp430f6634",2,8 },
400 { "msp430f6635",2,8 },
401 { "msp430f6636",2,8 },
402 { "msp430f6637",2,8 },
403 { "msp430f6638",2,8 },
404 { "msp430f6658",2,8 },
405 { "msp430f6659",2,8 },
406 { "msp430f6720",2,8 },
407 { "msp430f6720a",2,8 },
408 { "msp430f6721",2,8 },
409 { "msp430f6721a",2,8 },
410 { "msp430f6723",2,8 },
411 { "msp430f6723a",2,8 },
412 { "msp430f6724",2,8 },
413 { "msp430f6724a",2,8 },
414 { "msp430f6725",2,8 },
415 { "msp430f6725a",2,8 },
416 { "msp430f6726",2,8 },
417 { "msp430f6726a",2,8 },
418 { "msp430f6730",2,8 },
419 { "msp430f6730a",2,8 },
420 { "msp430f6731",2,8 },
421 { "msp430f6731a",2,8 },
422 { "msp430f6733",2,8 },
423 { "msp430f6733a",2,8 },
424 { "msp430f6734",2,8 },
425 { "msp430f6734a",2,8 },
426 { "msp430f6735",2,8 },
427 { "msp430f6735a",2,8 },
428 { "msp430f6736",2,8 },
429 { "msp430f6736a",2,8 },
430 { "msp430f6745",2,8 },
431 { "msp430f67451",2,8 },
432 { "msp430f67451a",2,8 },
433 { "msp430f6745a",2,8 },
434 { "msp430f6746",2,8 },
435 { "msp430f67461",2,8 },
436 { "msp430f67461a",2,8 },
437 { "msp430f6746a",2,8 },
438 { "msp430f6747",2,8 },
439 { "msp430f67471",2,8 },
440 { "msp430f67471a",2,8 },
441 { "msp430f6747a",2,8 },
442 { "msp430f6748",2,8 },
443 { "msp430f67481",2,8 },
444 { "msp430f67481a",2,8 },
445 { "msp430f6748a",2,8 },
446 { "msp430f6749",2,8 },
447 { "msp430f67491",2,8 },
448 { "msp430f67491a",2,8 },
449 { "msp430f6749a",2,8 },
450 { "msp430f67621",2,8 },
451 { "msp430f67621a",2,8 },
452 { "msp430f67641",2,8 },
453 { "msp430f67641a",2,8 },
454 { "msp430f6765",2,8 },
455 { "msp430f67651",2,8 },
456 { "msp430f67651a",2,8 },
457 { "msp430f6765a",2,8 },
458 { "msp430f6766",2,8 },
459 { "msp430f67661",2,8 },
460 { "msp430f67661a",2,8 },
461 { "msp430f6766a",2,8 },
462 { "msp430f6767",2,8 },
463 { "msp430f67671",2,8 },
464 { "msp430f67671a",2,8 },
465 { "msp430f6767a",2,8 },
466 { "msp430f6768",2,8 },
467 { "msp430f67681",2,8 },
468 { "msp430f67681a",2,8 },
469 { "msp430f6768a",2,8 },
470 { "msp430f6769",2,8 },
471 { "msp430f67691",2,8 },
472 { "msp430f67691a",2,8 },
473 { "msp430f6769a",2,8 },
474 { "msp430f6775",2,8 },
475 { "msp430f67751",2,8 },
476 { "msp430f67751a",2,8 },
477 { "msp430f6775a",2,8 },
478 { "msp430f6776",2,8 },
479 { "msp430f67761",2,8 },
480 { "msp430f67761a",2,8 },
481 { "msp430f6776a",2,8 },
482 { "msp430f6777",2,8 },
483 { "msp430f67771",2,8 },
484 { "msp430f67771a",2,8 },
485 { "msp430f6777a",2,8 },
486 { "msp430f6778",2,8 },
487 { "msp430f67781",2,8 },
488 { "msp430f67781a",2,8 },
489 { "msp430f6778a",2,8 },
490 { "msp430f6779",2,8 },
491 { "msp430f67791",2,8 },
492 { "msp430f67791a",2,8 },
493 { "msp430f6779a",2,8 },
494 { "msp430fe423",0,0 },
495 { "msp430fe4232",0,0 },
496 { "msp430fe423a",0,0 },
497 { "msp430fe4242",0,0 },
498 { "msp430fe425",0,0 },
499 { "msp430fe4252",0,0 },
500 { "msp430fe425a",0,0 },
501 { "msp430fe427",0,0 },
502 { "msp430fe4272",0,0 },
503 { "msp430fe427a",0,0 },
504 { "msp430fg4250",0,0 },
505 { "msp430fg4260",0,0 },
506 { "msp430fg4270",0,0 },
507 { "msp430fg437",0,0 },
508 { "msp430fg438",0,0 },
509 { "msp430fg439",0,0 },
510 { "msp430fg4616",1,1 },
511 { "msp430fg4617",1,1 },
512 { "msp430fg4618",1,1 },
513 { "msp430fg4619",1,1 },
514 { "msp430fg477",0,0 },
515 { "msp430fg478",0,0 },
516 { "msp430fg479",0,0 },
517 { "msp430fg6425",2,8 },
518 { "msp430fg6426",2,8 },
519 { "msp430fg6625",2,8 },
520 { "msp430fg6626",2,8 },
521 { "msp430fr2032",2,0 },
522 { "msp430fr2033",2,0 },
523 { "msp430fr2310",2,0 },
524 { "msp430fr2311",2,0 },
525 { "msp430fr2433",2,8 },
526 { "msp430fr2532",2,8 },
527 { "msp430fr2533",2,8 },
528 { "msp430fr2632",2,8 },
529 { "msp430fr2633",2,8 },
530 { "msp430fr2xx_4xxgeneric",2,8 },
531 { "msp430fr4131",2,0 },
532 { "msp430fr4132",2,0 },
533 { "msp430fr4133",2,0 },
534 { "msp430fr5720",2,8 },
535 { "msp430fr5721",2,8 },
536 { "msp430fr5722",2,8 },
537 { "msp430fr5723",2,8 },
538 { "msp430fr5724",2,8 },
539 { "msp430fr5725",2,8 },
540 { "msp430fr5726",2,8 },
541 { "msp430fr5727",2,8 },
542 { "msp430fr5728",2,8 },
543 { "msp430fr5729",2,8 },
544 { "msp430fr5730",2,8 },
545 { "msp430fr5731",2,8 },
546 { "msp430fr5732",2,8 },
547 { "msp430fr5733",2,8 },
548 { "msp430fr5734",2,8 },
549 { "msp430fr5735",2,8 },
550 { "msp430fr5736",2,8 },
551 { "msp430fr5737",2,8 },
552 { "msp430fr5738",2,8 },
553 { "msp430fr5739",2,8 },
554 { "msp430fr57xxgeneric",2,8 },
555 { "msp430fr5847",2,8 },
556 { "msp430fr58471",2,8 },
557 { "msp430fr5848",2,8 },
558 { "msp430fr5849",2,8 },
559 { "msp430fr5857",2,8 },
560 { "msp430fr5858",2,8 },
561 { "msp430fr5859",2,8 },
562 { "msp430fr5867",2,8 },
563 { "msp430fr5862",2,8 },
564 { "msp430fr5864",2,8 },
565 { "msp430fr58671",2,8 },
566 { "msp430fr5868",2,8 },
567 { "msp430fr5869",2,8 },
568 { "msp430fr5870",2,8 },
569 { "msp430fr5872",2,8 },
570 { "msp430fr58721",2,8 },
571 { "msp430fr5887",2,8 },
572 { "msp430fr5888",2,8 },
573 { "msp430fr5889",2,8 },
574 { "msp430fr58891",2,8 },
575 { "msp430fr5892",2,8 },
576 { "msp430fr5894",2,8 },
577 { "msp430fr5922",2,8 },
578 { "msp430fr59221",2,8 },
579 { "msp430fr5947",2,8 },
580 { "msp430fr59471",2,8 },
581 { "msp430fr5948",2,8 },
582 { "msp430fr5949",2,8 },
583 { "msp430fr5957",2,8 },
584 { "msp430fr5958",2,8 },
585 { "msp430fr5959",2,8 },
586 { "msp430fr5962",2,8 },
587 { "msp430fr5964",2,8 },
588 { "msp430fr5967",2,8 },
589 { "msp430fr5968",2,8 },
590 { "msp430fr5969",2,8 },
591 { "msp430fr59691",2,8 },
592 { "msp430fr5970",2,8 },
593 { "msp430fr5972",2,8 },
594 { "msp430fr59721",2,8 },
595 { "msp430fr5986",2,8 },
596 { "msp430fr5987",2,8 },
597 { "msp430fr5988",2,8 },
598 { "msp430fr5989",2,8 },
599 { "msp430fr59891",2,8 },
600 { "msp430fr5992",2,8 },
601 { "msp430fr5994",2,8 },
602 { "msp430fr5xx_6xxgeneric",2,8 },
603 { "msp430fr6820",2,8 },
604 { "msp430fr6822",2,8 },
605 { "msp430fr68221",2,8 },
606 { "msp430fr6870",2,8 },
607 { "msp430fr6872",2,8 },
608 { "msp430fr68721",2,8 },
609 { "msp430fr6877",2,8 },
610 { "msp430fr6879",2,8 },
611 { "msp430fr68791",2,8 },
612 { "msp430fr6887",2,8 },
613 { "msp430fr6888",2,8 },
614 { "msp430fr6889",2,8 },
615 { "msp430fr68891",2,8 },
616 { "msp430fr6920",2,8 },
617 { "msp430fr6922",2,8 },
618 { "msp430fr69221",2,8 },
619 { "msp430fr6927",2,8 },
620 { "msp430fr69271",2,8 },
621 { "msp430fr6928",2,8 },
622 { "msp430fr6970",2,8 },
623 { "msp430fr6972",2,8 },
624 { "msp430fr69721",2,8 },
625 { "msp430fr6977",2,8 },
626 { "msp430fr6979",2,8 },
627 { "msp430fr69791",2,8 },
628 { "msp430fr6987",2,8 },
629 { "msp430fr6988",2,8 },
630 { "msp430fr6989",2,8 },
631 { "msp430fr69891",2,8 },
632 { "msp430fw423",0,0 },
633 { "msp430fw425",0,0 },
634 { "msp430fw427",0,0 },
635 { "msp430fw428",0,0 },
636 { "msp430fw429",0,0 },
637 { "msp430g2001",0,0 },
638 { "msp430g2101",0,0 },
639 { "msp430g2102",0,0 },
640 { "msp430g2111",0,0 },
641 { "msp430g2112",0,0 },
642 { "msp430g2113",0,0 },
643 { "msp430g2121",0,0 },
644 { "msp430g2131",0,0 },
645 { "msp430g2132",0,0 },
646 { "msp430g2152",0,0 },
647 { "msp430g2153",0,0 },
648 { "msp430g2201",0,0 },
649 { "msp430g2202",0,0 },
650 { "msp430g2203",0,0 },
651 { "msp430g2210",0,0 },
652 { "msp430g2211",0,0 },
653 { "msp430g2212",0,0 },
654 { "msp430g2213",0,0 },
655 { "msp430g2221",0,0 },
656 { "msp430g2230",0,0 },
657 { "msp430g2231",0,0 },
658 { "msp430g2232",0,0 },
659 { "msp430g2233",0,0 },
660 { "msp430g2252",0,0 },
661 { "msp430g2253",0,0 },
662 { "msp430g2302",0,0 },
663 { "msp430g2303",0,0 },
664 { "msp430g2312",0,0 },
665 { "msp430g2313",0,0 },
666 { "msp430g2332",0,0 },
667 { "msp430g2333",0,0 },
668 { "msp430g2352",0,0 },
669 { "msp430g2353",0,0 },
670 { "msp430g2402",0,0 },
671 { "msp430g2403",0,0 },
672 { "msp430g2412",0,0 },
673 { "msp430g2413",0,0 },
674 { "msp430g2432",0,0 },
675 { "msp430g2433",0,0 },
676 { "msp430g2444",0,0 },
677 { "msp430g2452",0,0 },
678 { "msp430g2453",0,0 },
679 { "msp430g2513",0,0 },
680 { "msp430g2533",0,0 },
681 { "msp430g2544",0,0 },
682 { "msp430g2553",0,0 },
683 { "msp430g2744",0,0 },
684 { "msp430g2755",0,0 },
685 { "msp430g2855",0,0 },
686 { "msp430g2955",0,0 },
687 { "msp430i2020",0,2 },
688 { "msp430i2021",0,2 },
689 { "msp430i2030",0,2 },
690 { "msp430i2031",0,2 },
691 { "msp430i2040",0,2 },
692 { "msp430i2041",0,2 },
693 { "msp430i2xxgeneric",0,2 },
694 { "msp430l092",0,0 },
695 { "msp430p112",0,0 },
696 { "msp430p313",0,0 },
697 { "msp430p315",0,0 },
698 { "msp430p315s",0,0 },
699 { "msp430p325",0,0 },
700 { "msp430p337",0,1 },
701 { "msp430sl5438a",2,8 },
702 { "msp430tch5e",0,0 },
703 { "msp430xgeneric",2,8 },
704 { "rf430f5144",2,8 },
705 { "rf430f5155",2,8 },
706 { "rf430f5175",2,8 },
707 { "rf430frl152h",0,0 },
708 { "rf430frl152h_rom",0,0 },
709 { "rf430frl153h",0,0 },
710 { "rf430frl153h_rom",0,0 },
711 { "rf430frl154h",0,0 },
712 { "rf430frl154h_rom",0,0 }
715 /* Generate a C preprocessor symbol based upon the MCU selected by the user.
716 If a specific MCU has not been selected then return a generic symbol instead. */
719 msp430_mcu_name (void)
724 static char mcu_name
[64];
726 snprintf (mcu_name
, sizeof (mcu_name
) - 1, "__%s__", target_mcu
);
727 for (i
= strlen (mcu_name
); i
--;)
728 mcu_name
[i
] = TOUPPER (mcu_name
[i
]);
732 return msp430x
? "__MSP430XGENERIC__" : "__MSP430GENERIC__";
736 hwmult_name (unsigned int val
)
740 case 0: return "none";
741 case 1: return "16-bit";
742 case 2: return "16-bit";
743 case 4: return "32-bit";
744 case 8: return "32-bit (5xx)";
745 default: gcc_unreachable ();
750 msp430_option_override (void)
752 init_machine_status
= msp430_init_machine_status
;
756 /* gcc/common/config/msp430-common.c will have
757 already canonicalised the string in target_cpu. */
758 if (strcasecmp (target_cpu
, "msp430x") == 0)
760 else /* target_cpu == "msp430" - already handled by the front end. */
768 /* FIXME: If the array were alpha sorted, we could use a binary search. */
769 for (i
= ARRAY_SIZE (msp430_mcu_data
); i
--;)
770 if (strcasecmp (msp430_mcu_data
[i
].name
, target_mcu
) == 0)
772 bool xisa
= msp430_mcu_data
[i
].revision
>= 1;
776 if (target_cpu
&& msp430x
!= xisa
)
777 warning (0, "MCU '%s' supports %s ISA but -mcpu option is set to %s",
778 target_mcu
, xisa
? "430X" : "430", msp430x
? "430X" : "430");
780 if (msp430_mcu_data
[i
].hwmpy
== 0
781 && msp430_hwmult_type
!= MSP430_HWMULT_AUTO
782 && msp430_hwmult_type
!= MSP430_HWMULT_NONE
)
783 warning (0, "MCU '%s' does not have hardware multiply support, but -mhwmult is set to %s",
785 msp430_hwmult_type
== MSP430_HWMULT_SMALL
? "16-bit"
786 : msp430_hwmult_type
== MSP430_HWMULT_LARGE
? "32-bit" : "f5series");
787 else if (msp430_hwmult_type
== MSP430_HWMULT_SMALL
788 && msp430_mcu_data
[i
].hwmpy
!= 1
789 && msp430_mcu_data
[i
].hwmpy
!= 2 )
790 warning (0, "MCU '%s' supports %s hardware multiply, but -mhwmult is set to 16-bit",
791 target_mcu
, hwmult_name (msp430_mcu_data
[i
].hwmpy
));
792 else if (msp430_hwmult_type
== MSP430_HWMULT_LARGE
&& msp430_mcu_data
[i
].hwmpy
!= 4)
793 warning (0, "MCU '%s' supports %s hardware multiply, but -mhwmult is set to 32-bit",
794 target_mcu
, hwmult_name (msp430_mcu_data
[i
].hwmpy
));
795 else if (msp430_hwmult_type
== MSP430_HWMULT_F5SERIES
&& msp430_mcu_data
[i
].hwmpy
!= 8)
796 warning (0, "MCU '%s' supports %s hardware multiply, but -mhwmult is set to f5series",
797 target_mcu
, hwmult_name (msp430_mcu_data
[i
].hwmpy
));
806 if (msp430_hwmult_type
== MSP430_HWMULT_AUTO
)
810 if (target_cpu
== NULL
)
812 "Unrecognised MCU name '%s', assuming that it is just a MSP430 with no hardware multiply.\nUse the -mcpu and -mhwmult options to set these explicitly.",
816 "Unrecognised MCU name '%s', assuming that it has no hardware multiply.\nUse the -mhwmult option to set this explicitly.",
820 msp430_hwmult_type
= MSP430_HWMULT_NONE
;
822 else if (target_cpu
== NULL
)
826 "Unrecognised MCU name '%s', assuming that it just supports the MSP430 ISA.\nUse the -mcpu option to set the ISA explicitly.",
831 else if (msp430_warn_mcu
)
833 "Unrecognised MCU name '%s'.", target_mcu
);
837 /* The F5 series are all able to support the 430X ISA. */
838 if (target_cpu
== NULL
&& target_mcu
== NULL
&& msp430_hwmult_type
== MSP430_HWMULT_F5SERIES
)
841 if (TARGET_LARGE
&& !msp430x
)
842 error ("-mlarge requires a 430X-compatible -mmcu=");
844 if (msp430_code_region
== MSP430_REGION_UPPER
&& ! msp430x
)
845 error ("-mcode-region=upper requires 430X-compatible cpu");
846 if (msp430_data_region
== MSP430_REGION_UPPER
&& ! msp430x
)
847 error ("-mdata-region=upper requires 430X-compatible cpu");
849 if (flag_exceptions
|| flag_non_call_exceptions
850 || flag_unwind_tables
|| flag_asynchronous_unwind_tables
)
851 flag_omit_frame_pointer
= false;
853 flag_omit_frame_pointer
= true;
855 /* This is a hack to work around a problem with the newlib build
856 mechanism. Newlib always appends CFLAGS to the end of the GCC
857 command line and always sets -O2 in CFLAGS. Thus it is not
858 possible to build newlib with -Os enabled. Until now... */
859 if (TARGET_OPT_SPACE
&& optimize
< 3)
863 #undef TARGET_SCALAR_MODE_SUPPORTED_P
864 #define TARGET_SCALAR_MODE_SUPPORTED_P msp430_scalar_mode_supported_p
867 msp430_scalar_mode_supported_p (machine_mode m
)
869 if (m
== PSImode
&& msp430x
)
875 return default_scalar_mode_supported_p (m
);
882 #undef TARGET_MS_BITFIELD_LAYOUT_P
883 #define TARGET_MS_BITFIELD_LAYOUT_P msp430_ms_bitfield_layout_p
886 msp430_ms_bitfield_layout_p (const_tree record_type ATTRIBUTE_UNUSED
)
895 /* Implements HARD_REGNO_NREGS. MSP430X registers can hold a single
896 PSImode value, but not an SImode value. */
898 msp430_hard_regno_nregs (int regno ATTRIBUTE_UNUSED
,
901 if (mode
== PSImode
&& msp430x
)
903 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1)
907 /* Implements HARD_REGNO_NREGS_HAS_PADDING. */
909 msp430_hard_regno_nregs_has_padding (int regno ATTRIBUTE_UNUSED
,
912 if (mode
== PSImode
&& msp430x
)
914 return ((GET_MODE_SIZE (mode
) + UNITS_PER_WORD
- 1)
918 /* Implements HARD_REGNO_NREGS_WITH_PADDING. */
920 msp430_hard_regno_nregs_with_padding (int regno ATTRIBUTE_UNUSED
,
925 return msp430_hard_regno_nregs (regno
, mode
);
928 /* Implements HARD_REGNO_MODE_OK. */
930 msp430_hard_regno_mode_ok (int regno ATTRIBUTE_UNUSED
,
933 return regno
<= (ARG_POINTER_REGNUM
- msp430_hard_regno_nregs (regno
, mode
));
936 /* Implements MODES_TIEABLE_P. */
938 msp430_modes_tieable_p (machine_mode mode1
, machine_mode mode2
)
940 if ((mode1
== PSImode
|| mode2
== SImode
)
941 || (mode1
== SImode
|| mode2
== PSImode
))
944 return ((GET_MODE_CLASS (mode1
) == MODE_FLOAT
945 || GET_MODE_CLASS (mode1
) == MODE_COMPLEX_FLOAT
)
946 == (GET_MODE_CLASS (mode2
) == MODE_FLOAT
947 || GET_MODE_CLASS (mode2
) == MODE_COMPLEX_FLOAT
));
950 #undef TARGET_FRAME_POINTER_REQUIRED
951 #define TARGET_FRAME_POINTER_REQUIRED msp430_frame_pointer_required
954 msp430_frame_pointer_required (void)
959 #undef TARGET_CAN_ELIMINATE
960 #define TARGET_CAN_ELIMINATE msp430_can_eliminate
963 msp430_can_eliminate (const int from_reg ATTRIBUTE_UNUSED
,
964 const int to_reg ATTRIBUTE_UNUSED
)
969 /* Implements INITIAL_ELIMINATION_OFFSET. */
971 msp430_initial_elimination_offset (int from
, int to
)
973 int rv
= 0; /* As if arg to arg. */
975 msp430_compute_frame_info ();
979 case STACK_POINTER_REGNUM
:
980 rv
+= cfun
->machine
->framesize_outgoing
;
981 rv
+= cfun
->machine
->framesize_locals
;
983 case FRAME_POINTER_REGNUM
:
984 rv
+= cfun
->machine
->framesize_regs
;
985 /* Allow for the saved return address. */
986 rv
+= (TARGET_LARGE
? 4 : 2);
987 /* NB/ No need to allow for crtl->args.pretend_args_size.
988 GCC does that for us. */
996 case FRAME_POINTER_REGNUM
:
997 /* Allow for the fall through above. */
998 rv
-= (TARGET_LARGE
? 4 : 2);
999 rv
-= cfun
->machine
->framesize_regs
;
1000 case ARG_POINTER_REGNUM
:
1009 /* Named Address Space support */
1012 /* Return the appropriate mode for a named address pointer. */
1013 #undef TARGET_ADDR_SPACE_POINTER_MODE
1014 #define TARGET_ADDR_SPACE_POINTER_MODE msp430_addr_space_pointer_mode
1015 #undef TARGET_ADDR_SPACE_ADDRESS_MODE
1016 #define TARGET_ADDR_SPACE_ADDRESS_MODE msp430_addr_space_pointer_mode
1019 msp430_addr_space_pointer_mode (addr_space_t addrspace
)
1024 case ADDR_SPACE_GENERIC
:
1026 case ADDR_SPACE_NEAR
:
1028 case ADDR_SPACE_FAR
:
1033 /* Function pointers are stored in unwind_word sized
1034 variables, so make sure that unwind_word is big enough. */
1035 #undef TARGET_UNWIND_WORD_MODE
1036 #define TARGET_UNWIND_WORD_MODE msp430_unwind_word_mode
1039 msp430_unwind_word_mode (void)
1041 /* This needs to match msp430_init_dwarf_reg_sizes_extra (below). */
1042 return msp430x
? PSImode
: HImode
;
1045 /* Determine if one named address space is a subset of another. */
1046 #undef TARGET_ADDR_SPACE_SUBSET_P
1047 #define TARGET_ADDR_SPACE_SUBSET_P msp430_addr_space_subset_p
1049 msp430_addr_space_subset_p (addr_space_t subset
, addr_space_t superset
)
1051 if (subset
== superset
)
1054 return (subset
!= ADDR_SPACE_FAR
&& superset
== ADDR_SPACE_FAR
);
1057 #undef TARGET_ADDR_SPACE_CONVERT
1058 #define TARGET_ADDR_SPACE_CONVERT msp430_addr_space_convert
1059 /* Convert from one address space to another. */
1061 msp430_addr_space_convert (rtx op
, tree from_type
, tree to_type
)
1063 addr_space_t from_as
= TYPE_ADDR_SPACE (TREE_TYPE (from_type
));
1064 addr_space_t to_as
= TYPE_ADDR_SPACE (TREE_TYPE (to_type
));
1067 if (to_as
!= ADDR_SPACE_FAR
&& from_as
== ADDR_SPACE_FAR
)
1069 /* This is unpredictable, as we're truncating off usable address
1072 if (CONSTANT_P (op
))
1073 return gen_rtx_CONST (HImode
, op
);
1075 result
= gen_reg_rtx (HImode
);
1076 emit_insn (gen_truncpsihi2 (result
, op
));
1079 else if (to_as
== ADDR_SPACE_FAR
&& from_as
!= ADDR_SPACE_FAR
)
1081 /* This always works. */
1083 if (CONSTANT_P (op
))
1084 return gen_rtx_CONST (PSImode
, op
);
1086 result
= gen_reg_rtx (PSImode
);
1087 emit_insn (gen_zero_extendhipsi2 (result
, op
));
1094 /* Stack Layout and Calling Conventions. */
1096 /* For each function, we list the gcc version and the TI version on
1097 each line, where we're converting the function names. */
1098 static char const * const special_convention_function_names
[] =
1100 "__muldi3", "__mspabi_mpyll",
1101 "__udivdi3", "__mspabi_divull",
1102 "__umoddi3", "__mspabi_remull",
1103 "__divdi3", "__mspabi_divlli",
1104 "__moddi3", "__mspabi_remlli",
1108 "__adddf3", "__mspabi_addd",
1109 "__subdf3", "__mspabi_subd",
1110 "__muldf3", "__mspabi_mpyd",
1111 "__divdf3", "__mspabi_divd",
1116 /* TRUE if the function passed is a "speical" function. Special
1117 functions pass two DImode parameters in registers. */
1119 msp430_special_register_convention_p (const char *name
)
1123 for (i
= 0; special_convention_function_names
[i
]; i
++)
1124 if (! strcmp (name
, special_convention_function_names
[i
]))
1130 #undef TARGET_FUNCTION_VALUE_REGNO_P
1131 #define TARGET_FUNCTION_VALUE_REGNO_P msp430_function_value_regno_p
1134 msp430_function_value_regno_p (unsigned int regno
)
1140 #undef TARGET_FUNCTION_VALUE
1141 #define TARGET_FUNCTION_VALUE msp430_function_value
1144 msp430_function_value (const_tree ret_type
,
1145 const_tree fn_decl_or_type ATTRIBUTE_UNUSED
,
1146 bool outgoing ATTRIBUTE_UNUSED
)
1148 return gen_rtx_REG (TYPE_MODE (ret_type
), 12);
1151 #undef TARGET_LIBCALL_VALUE
1152 #define TARGET_LIBCALL_VALUE msp430_libcall_value
1155 msp430_libcall_value (machine_mode mode
, const_rtx fun ATTRIBUTE_UNUSED
)
1157 return gen_rtx_REG (mode
, 12);
1160 /* Implements INIT_CUMULATIVE_ARGS. */
1162 msp430_init_cumulative_args (CUMULATIVE_ARGS
*ca
,
1163 tree fntype ATTRIBUTE_UNUSED
,
1164 rtx libname ATTRIBUTE_UNUSED
,
1165 tree fndecl ATTRIBUTE_UNUSED
,
1166 int n_named_args ATTRIBUTE_UNUSED
)
1169 memset (ca
, 0, sizeof(*ca
));
1174 fname
= IDENTIFIER_POINTER (DECL_NAME (fndecl
));
1176 fname
= XSTR (libname
, 0);
1180 if (fname
&& msp430_special_register_convention_p (fname
))
1184 /* Helper function for argument passing; this function is the common
1185 code that determines where an argument will be passed. */
1187 msp430_evaluate_arg (cumulative_args_t cap
,
1189 const_tree type ATTRIBUTE_UNUSED
,
1192 CUMULATIVE_ARGS
*ca
= get_cumulative_args (cap
);
1193 int nregs
= GET_MODE_SIZE (mode
);
1202 if (mode
== PSImode
)
1205 nregs
= (nregs
+ 1) / 2;
1209 /* Function is passed two DImode operands, in R8:R11 and
1219 for (i
= 0; i
< 4; i
++)
1220 if (! ca
->reg_used
[i
])
1223 ca
->start_reg
= CA_FIRST_REG
+ i
;
1228 for (i
= 0; i
< 3; i
++)
1229 if (! ca
->reg_used
[i
] && ! ca
->reg_used
[i
+ 1])
1232 ca
->start_reg
= CA_FIRST_REG
+ i
;
1235 if (! ca
->reg_used
[3] && ca
->can_split
)
1239 ca
->start_reg
= CA_FIRST_REG
+ 3;
1246 if (! ca
->reg_used
[0]
1247 && ! ca
->reg_used
[1]
1248 && ! ca
->reg_used
[2]
1249 && ! ca
->reg_used
[3])
1252 ca
->start_reg
= CA_FIRST_REG
;
1259 #undef TARGET_PROMOTE_PROTOTYPES
1260 #define TARGET_PROMOTE_PROTOTYPES msp430_promote_prototypes
1263 msp430_promote_prototypes (const_tree fntype ATTRIBUTE_UNUSED
)
1268 #undef TARGET_FUNCTION_ARG
1269 #define TARGET_FUNCTION_ARG msp430_function_arg
1272 msp430_function_arg (cumulative_args_t cap
,
1277 CUMULATIVE_ARGS
*ca
= get_cumulative_args (cap
);
1279 msp430_evaluate_arg (cap
, mode
, type
, named
);
1282 return gen_rtx_REG (mode
, ca
->start_reg
);
1287 #undef TARGET_ARG_PARTIAL_BYTES
1288 #define TARGET_ARG_PARTIAL_BYTES msp430_arg_partial_bytes
1291 msp430_arg_partial_bytes (cumulative_args_t cap
,
1296 CUMULATIVE_ARGS
*ca
= get_cumulative_args (cap
);
1298 msp430_evaluate_arg (cap
, mode
, type
, named
);
1300 if (ca
->reg_count
&& ca
->mem_count
)
1301 return ca
->reg_count
* UNITS_PER_WORD
;
1306 #undef TARGET_PASS_BY_REFERENCE
1307 #define TARGET_PASS_BY_REFERENCE msp430_pass_by_reference
1310 msp430_pass_by_reference (cumulative_args_t cap ATTRIBUTE_UNUSED
,
1313 bool named ATTRIBUTE_UNUSED
)
1315 return (mode
== BLKmode
1316 || (type
&& TREE_CODE (type
) == RECORD_TYPE
)
1317 || (type
&& TREE_CODE (type
) == UNION_TYPE
));
1320 #undef TARGET_CALLEE_COPIES
1321 #define TARGET_CALLEE_COPIES msp430_callee_copies
1324 msp430_callee_copies (cumulative_args_t cap ATTRIBUTE_UNUSED
,
1325 machine_mode mode ATTRIBUTE_UNUSED
,
1326 const_tree type ATTRIBUTE_UNUSED
,
1327 bool named ATTRIBUTE_UNUSED
)
1332 #undef TARGET_FUNCTION_ARG_ADVANCE
1333 #define TARGET_FUNCTION_ARG_ADVANCE msp430_function_arg_advance
1336 msp430_function_arg_advance (cumulative_args_t cap
,
1341 CUMULATIVE_ARGS
*ca
= get_cumulative_args (cap
);
1344 msp430_evaluate_arg (cap
, mode
, type
, named
);
1346 if (ca
->start_reg
>= CA_FIRST_REG
)
1347 for (i
= 0; i
< ca
->reg_count
; i
++)
1348 ca
->reg_used
[i
+ ca
->start_reg
- CA_FIRST_REG
] = 1;
1353 #undef TARGET_FUNCTION_ARG_BOUNDARY
1354 #define TARGET_FUNCTION_ARG_BOUNDARY msp430_function_arg_boundary
1357 msp430_function_arg_boundary (machine_mode mode
, const_tree type
)
1360 && int_size_in_bytes (type
) > 1)
1362 if (GET_MODE_BITSIZE (mode
) > 8)
1367 #undef TARGET_RETURN_IN_MEMORY
1368 #define TARGET_RETURN_IN_MEMORY msp430_return_in_memory
1371 msp430_return_in_memory (const_tree ret_type
, const_tree fntype ATTRIBUTE_UNUSED
)
1373 machine_mode mode
= TYPE_MODE (ret_type
);
1376 || (fntype
&& TREE_CODE (TREE_TYPE (fntype
)) == RECORD_TYPE
)
1377 || (fntype
&& TREE_CODE (TREE_TYPE (fntype
)) == UNION_TYPE
))
1380 if (GET_MODE_SIZE (mode
) > 8)
1386 #undef TARGET_GET_RAW_ARG_MODE
1387 #define TARGET_GET_RAW_ARG_MODE msp430_get_raw_arg_mode
1390 msp430_get_raw_arg_mode (int regno
)
1392 return (regno
== ARG_POINTER_REGNUM
) ? VOIDmode
: Pmode
;
1395 #undef TARGET_GET_RAW_RESULT_MODE
1396 #define TARGET_GET_RAW_RESULT_MODE msp430_get_raw_result_mode
1399 msp430_get_raw_result_mode (int regno ATTRIBUTE_UNUSED
)
1404 #undef TARGET_GIMPLIFY_VA_ARG_EXPR
1405 #define TARGET_GIMPLIFY_VA_ARG_EXPR msp430_gimplify_va_arg_expr
1407 #include "gimplify.h"
1410 msp430_gimplify_va_arg_expr (tree valist
, tree type
, gimple_seq
*pre_p
,
1413 tree addr
, t
, type_size
, rounded_size
, valist_tmp
;
1414 unsigned HOST_WIDE_INT align
, boundary
;
1417 indirect
= pass_by_reference (NULL
, TYPE_MODE (type
), type
, false);
1419 type
= build_pointer_type (type
);
1421 align
= PARM_BOUNDARY
/ BITS_PER_UNIT
;
1422 boundary
= targetm
.calls
.function_arg_boundary (TYPE_MODE (type
), type
);
1424 /* When we align parameter on stack for caller, if the parameter
1425 alignment is beyond MAX_SUPPORTED_STACK_ALIGNMENT, it will be
1426 aligned at MAX_SUPPORTED_STACK_ALIGNMENT. We will match callee
1427 here with caller. */
1428 if (boundary
> MAX_SUPPORTED_STACK_ALIGNMENT
)
1429 boundary
= MAX_SUPPORTED_STACK_ALIGNMENT
;
1431 boundary
/= BITS_PER_UNIT
;
1433 /* Hoist the valist value into a temporary for the moment. */
1434 valist_tmp
= get_initialized_tmp_var (valist
, pre_p
, NULL
);
1436 /* va_list pointer is aligned to PARM_BOUNDARY. If argument actually
1437 requires greater alignment, we must perform dynamic alignment. */
1438 if (boundary
> align
1439 && !integer_zerop (TYPE_SIZE (type
)))
1441 /* FIXME: This is where this function diverts from targhooks.c:
1442 std_gimplify_va_arg_expr(). It works, but I do not know why... */
1443 if (! POINTER_TYPE_P (type
))
1445 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1446 fold_build_pointer_plus_hwi (valist_tmp
, boundary
- 1));
1447 gimplify_and_add (t
, pre_p
);
1449 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist_tmp
,
1450 fold_build2 (BIT_AND_EXPR
, TREE_TYPE (valist
),
1452 build_int_cst (TREE_TYPE (valist
), -boundary
)));
1453 gimplify_and_add (t
, pre_p
);
1459 /* If the actual alignment is less than the alignment of the type,
1460 adjust the type accordingly so that we don't assume strict alignment
1461 when dereferencing the pointer. */
1462 boundary
*= BITS_PER_UNIT
;
1463 if (boundary
< TYPE_ALIGN (type
))
1465 type
= build_variant_type_copy (type
);
1466 SET_TYPE_ALIGN (type
, boundary
);
1469 /* Compute the rounded size of the type. */
1470 type_size
= size_in_bytes (type
);
1471 rounded_size
= round_up (type_size
, align
);
1473 /* Reduce rounded_size so it's sharable with the postqueue. */
1474 gimplify_expr (&rounded_size
, pre_p
, post_p
, is_gimple_val
, fb_rvalue
);
1479 /* Compute new value for AP. */
1480 t
= fold_build_pointer_plus (valist_tmp
, rounded_size
);
1481 t
= build2 (MODIFY_EXPR
, TREE_TYPE (valist
), valist
, t
);
1482 gimplify_and_add (t
, pre_p
);
1484 addr
= fold_convert (build_pointer_type (type
), addr
);
1487 addr
= build_va_arg_indirect_ref (addr
);
1489 addr
= build_va_arg_indirect_ref (addr
);
1495 #define TARGET_LRA_P hook_bool_void_false
1497 /* Addressing Modes */
1499 #undef TARGET_LEGITIMATE_ADDRESS_P
1500 #define TARGET_LEGITIMATE_ADDRESS_P msp430_legitimate_address_p
1503 reg_ok_for_addr (rtx r
, bool strict
)
1507 if (strict
&& rn
>= FIRST_PSEUDO_REGISTER
)
1508 rn
= reg_renumber
[rn
];
1509 if (strict
&& 0 <= rn
&& rn
< FIRST_PSEUDO_REGISTER
)
1517 msp430_legitimate_address_p (machine_mode mode ATTRIBUTE_UNUSED
,
1518 rtx x ATTRIBUTE_UNUSED
,
1519 bool strict ATTRIBUTE_UNUSED
)
1521 switch (GET_CODE (x
))
1527 if (REG_P (XEXP (x
, 0)))
1529 if (GET_MODE (x
) != GET_MODE (XEXP (x
, 0)))
1531 if (!reg_ok_for_addr (XEXP (x
, 0), strict
))
1533 switch (GET_CODE (XEXP (x
, 1)))
1546 if (!reg_ok_for_addr (x
, strict
))
1559 #undef TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P
1560 #define TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P msp430_addr_space_legitimate_address_p
1563 msp430_addr_space_legitimate_address_p (machine_mode mode
,
1566 addr_space_t as ATTRIBUTE_UNUSED
)
1568 return msp430_legitimate_address_p (mode
, x
, strict
);
1571 #undef TARGET_ASM_INTEGER
1572 #define TARGET_ASM_INTEGER msp430_asm_integer
1574 msp430_asm_integer (rtx x
, unsigned int size
, int aligned_p
)
1576 int c
= GET_CODE (x
);
1578 if (size
== 3 && GET_MODE (x
) == PSImode
)
1584 if (c
== SYMBOL_REF
|| c
== CONST
|| c
== LABEL_REF
|| c
== CONST_INT
1585 || c
== PLUS
|| c
== MINUS
)
1587 fprintf (asm_out_file
, "\t.long\t");
1588 output_addr_const (asm_out_file
, x
);
1589 fputc ('\n', asm_out_file
);
1594 return default_assemble_integer (x
, size
, aligned_p
);
1597 #undef TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA
1598 #define TARGET_ASM_OUTPUT_ADDR_CONST_EXTRA msp430_asm_output_addr_const_extra
1600 msp430_asm_output_addr_const_extra (FILE *file ATTRIBUTE_UNUSED
, rtx x
)
1606 #undef TARGET_LEGITIMATE_CONSTANT_P
1607 #define TARGET_LEGITIMATE_CONSTANT_P msp430_legitimate_constant
1610 msp430_legitimate_constant (machine_mode mode
, rtx x
)
1612 return ! CONST_INT_P (x
)
1614 /* GCC does not know the width of the PSImode, so make
1615 sure that it does not try to use a constant value that
1617 || (INTVAL (x
) < (1 << 20) && INTVAL (x
) >= (HOST_WIDE_INT
)(HOST_WIDE_INT_M1U
<< 20));
1621 #undef TARGET_RTX_COSTS
1622 #define TARGET_RTX_COSTS msp430_rtx_costs
1624 static bool msp430_rtx_costs (rtx x ATTRIBUTE_UNUSED
,
1626 int outer_code ATTRIBUTE_UNUSED
,
1627 int opno ATTRIBUTE_UNUSED
,
1629 bool speed ATTRIBUTE_UNUSED
)
1631 int code
= GET_CODE (x
);
1636 if (mode
== SImode
&& outer_code
== SET
)
1638 *total
= COSTS_N_INSNS (4);
1647 *total
= COSTS_N_INSNS (100);
1655 /* Function Entry and Exit */
1657 /* The MSP430 call frame looks like this:
1660 +--------------------+
1664 +--------------------+ <-- "arg pointer"
1666 | PC from call | (2 bytes for 430, 4 for TARGET_LARGE)
1668 +--------------------+
1669 | SR if this func has|
1670 | been called via an |
1672 +--------------------+ <-- SP before prologue, also AP
1674 | Saved Regs | (2 bytes per reg for 430, 4 per for TARGET_LARGE)
1676 +--------------------+ <-- "frame pointer"
1680 +--------------------+
1684 +--------------------+ <-- SP during function
1689 /* We use this to wrap all emitted insns in the prologue, so they get
1690 the "frame-related" (/f) flag set. */
1694 RTX_FRAME_RELATED_P (x
) = 1;
1698 /* This is the one spot that decides if a register is to be saved and
1699 restored in the prologue/epilogue. */
1701 msp430_preserve_reg_p (int regno
)
1703 /* PC, SP, SR, and the constant generator. */
1707 /* FIXME: add interrupt, EH, etc. */
1708 if (crtl
->calls_eh_return
)
1711 /* Shouldn't be more than the above, but just in case... */
1712 if (fixed_regs
[regno
])
1715 /* Interrupt handlers save all registers they use, even
1716 ones which are call saved. If they call other functions
1717 then *every* register is saved. */
1718 if (msp430_is_interrupt_func ())
1719 return ! crtl
->is_leaf
|| df_regs_ever_live_p (regno
);
1721 if (!call_used_regs
[regno
]
1722 && df_regs_ever_live_p (regno
))
1728 /* Compute all the frame-related fields in our machine_function
1731 msp430_compute_frame_info (void)
1735 cfun
->machine
->computed
= 1;
1736 cfun
->machine
->framesize_regs
= 0;
1737 cfun
->machine
->framesize_locals
= get_frame_size ();
1738 cfun
->machine
->framesize_outgoing
= crtl
->outgoing_args_size
;
1740 for (i
= 0; i
< ARG_POINTER_REGNUM
; i
++)
1741 if (msp430_preserve_reg_p (i
))
1743 cfun
->machine
->need_to_save
[i
] = 1;
1744 cfun
->machine
->framesize_regs
+= (TARGET_LARGE
? 4 : 2);
1747 cfun
->machine
->need_to_save
[i
] = 0;
1749 if ((cfun
->machine
->framesize_locals
+ cfun
->machine
->framesize_outgoing
) & 1)
1750 cfun
->machine
->framesize_locals
++;
1752 cfun
->machine
->framesize
= (cfun
->machine
->framesize_regs
1753 + cfun
->machine
->framesize_locals
1754 + cfun
->machine
->framesize_outgoing
);
1757 /* Attribute Handling. */
1759 const char * const ATTR_INTR
= "interrupt";
1760 const char * const ATTR_WAKEUP
= "wakeup";
1761 const char * const ATTR_NAKED
= "naked";
1762 const char * const ATTR_REENT
= "reentrant";
1763 const char * const ATTR_CRIT
= "critical";
1764 const char * const ATTR_LOWER
= "lower";
1765 const char * const ATTR_UPPER
= "upper";
1766 const char * const ATTR_EITHER
= "either";
1767 const char * const ATTR_NOINIT
= "noinit";
1768 const char * const ATTR_PERSIST
= "persistent";
1771 has_attr (const char * attr
, tree decl
)
1773 if (decl
== NULL_TREE
)
1775 return lookup_attribute (attr
, DECL_ATTRIBUTES (decl
)) != NULL_TREE
;
1779 is_interrupt_func (tree decl
= current_function_decl
)
1781 return has_attr (ATTR_INTR
, decl
);
1784 /* Returns true if the current function has the "interrupt" attribute. */
1787 msp430_is_interrupt_func (void)
1789 return is_interrupt_func (current_function_decl
);
1793 is_wakeup_func (tree decl
= current_function_decl
)
1795 return is_interrupt_func (decl
) && has_attr (ATTR_WAKEUP
, decl
);
1799 is_naked_func (tree decl
= current_function_decl
)
1801 return has_attr (ATTR_NAKED
, decl
);
1805 is_reentrant_func (tree decl
= current_function_decl
)
1807 return has_attr (ATTR_REENT
, decl
);
1811 is_critical_func (tree decl
= current_function_decl
)
1813 return has_attr (ATTR_CRIT
, decl
);
1816 #undef TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS
1817 #define TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS msp430_allocate_stack_slots_for_args
1820 msp430_allocate_stack_slots_for_args (void)
1822 /* Naked functions should not allocate stack slots for arguments. */
1823 return ! is_naked_func ();
1826 /* Verify MSP430 specific attributes. */
1827 #define TREE_NAME_EQ(NAME, STR) (strcmp (IDENTIFIER_POINTER (NAME), (STR)) == 0)
1830 msp430_attr (tree
* node
,
1833 int flags ATTRIBUTE_UNUSED
,
1834 bool * no_add_attrs
)
1836 gcc_assert (DECL_P (* node
));
1840 /* Only the interrupt attribute takes an argument. */
1841 gcc_assert (TREE_NAME_EQ (name
, ATTR_INTR
));
1843 tree value
= TREE_VALUE (args
);
1845 switch (TREE_CODE (value
))
1848 if ( strcmp (TREE_STRING_POINTER (value
), "reset")
1849 && strcmp (TREE_STRING_POINTER (value
), "nmi")
1850 && strcmp (TREE_STRING_POINTER (value
), "watchdog"))
1851 /* Allow the attribute to be added - the linker script
1852 being used may still recognise this name. */
1853 warning (OPT_Wattributes
,
1854 "unrecognised interrupt vector argument of %qE attribute",
1859 if (wi::gtu_p (value
, 63))
1860 /* Allow the attribute to be added - the linker script
1861 being used may still recognise this value. */
1862 warning (OPT_Wattributes
,
1863 "numeric argument of %qE attribute must be in range 0..63",
1868 warning (OPT_Wattributes
,
1869 "argument of %qE attribute is not a string constant or number",
1871 *no_add_attrs
= true;
1876 const char * message
= NULL
;
1878 if (TREE_CODE (* node
) != FUNCTION_DECL
)
1880 message
= "%qE attribute only applies to functions";
1882 else if (TREE_NAME_EQ (name
, ATTR_INTR
))
1884 if (TREE_CODE (TREE_TYPE (* node
)) == FUNCTION_TYPE
1885 && ! VOID_TYPE_P (TREE_TYPE (TREE_TYPE (* node
))))
1886 message
= "interrupt handlers must be void";
1888 if (! TREE_PUBLIC (* node
))
1889 message
= "interrupt handlers cannot be static";
1891 else if (TREE_NAME_EQ (name
, ATTR_REENT
))
1893 if (is_naked_func (* node
))
1894 message
= "naked functions cannot be reentrant";
1895 else if (is_critical_func (* node
))
1896 message
= "critical functions cannot be reentrant";
1898 else if (TREE_NAME_EQ (name
, ATTR_CRIT
))
1900 if (is_naked_func (* node
))
1901 message
= "naked functions cannot be critical";
1902 else if (is_reentrant_func (* node
))
1903 message
= "reentrant functions cannot be critical";
1905 else if (TREE_NAME_EQ (name
, ATTR_NAKED
))
1907 if (is_critical_func (* node
))
1908 message
= "critical functions cannot be naked";
1909 else if (is_reentrant_func (* node
))
1910 message
= "reentrant functions cannot be naked";
1915 warning (OPT_Wattributes
, message
, name
);
1916 * no_add_attrs
= true;
1923 msp430_section_attr (tree
* node
,
1926 int flags ATTRIBUTE_UNUSED
,
1927 bool * no_add_attrs ATTRIBUTE_UNUSED
)
1929 gcc_assert (DECL_P (* node
));
1930 gcc_assert (args
== NULL
);
1932 const char * message
= NULL
;
1934 if (TREE_NAME_EQ (name
, ATTR_UPPER
))
1936 if (has_attr (ATTR_LOWER
, * node
))
1937 message
= "already marked with 'lower' attribute";
1938 else if (has_attr (ATTR_EITHER
, * node
))
1939 message
= "already marked with 'either' attribute";
1941 message
= "upper attribute needs a 430X cpu";
1943 else if (TREE_NAME_EQ (name
, ATTR_LOWER
))
1945 if (has_attr (ATTR_UPPER
, * node
))
1946 message
= "already marked with 'upper' attribute";
1947 else if (has_attr (ATTR_EITHER
, * node
))
1948 message
= "already marked with 'either' attribute";
1952 gcc_assert (TREE_NAME_EQ (name
, ATTR_EITHER
));
1954 if (has_attr (ATTR_LOWER
, * node
))
1955 message
= "already marked with 'lower' attribute";
1956 else if (has_attr (ATTR_UPPER
, * node
))
1957 message
= "already marked with 'upper' attribute";
1962 warning (OPT_Wattributes
, message
, name
);
1963 * no_add_attrs
= true;
1970 msp430_data_attr (tree
* node
,
1973 int flags ATTRIBUTE_UNUSED
,
1974 bool * no_add_attrs ATTRIBUTE_UNUSED
)
1976 const char * message
= NULL
;
1978 gcc_assert (DECL_P (* node
));
1979 gcc_assert (args
== NULL
);
1981 if (TREE_CODE (* node
) != VAR_DECL
)
1982 message
= "%qE attribute only applies to variables";
1984 if (DECL_SECTION_NAME (* node
))
1985 message
= "%qE attribute cannot be applied to variables with specific sections";
1987 /* If this var is thought to be common, then change this. Common variables
1988 are assigned to sections before the backend has a chance to process them. */
1989 if (DECL_COMMON (* node
))
1990 DECL_COMMON (* node
) = 0;
1994 warning (OPT_Wattributes
, message
, name
);
1995 * no_add_attrs
= true;
2002 #undef TARGET_ATTRIBUTE_TABLE
2003 #define TARGET_ATTRIBUTE_TABLE msp430_attribute_table
2005 /* Table of MSP430-specific attributes. */
2006 const struct attribute_spec msp430_attribute_table
[] =
2008 /* Name min_num_args type_req, affects_type_identity
2009 max_num_args, fn_type_req
2010 decl_req handler. */
2011 { ATTR_INTR
, 0, 1, true, false, false, msp430_attr
, false },
2012 { ATTR_NAKED
, 0, 0, true, false, false, msp430_attr
, false },
2013 { ATTR_REENT
, 0, 0, true, false, false, msp430_attr
, false },
2014 { ATTR_CRIT
, 0, 0, true, false, false, msp430_attr
, false },
2015 { ATTR_WAKEUP
, 0, 0, true, false, false, msp430_attr
, false },
2017 { ATTR_LOWER
, 0, 0, true, false, false, msp430_section_attr
, false },
2018 { ATTR_UPPER
, 0, 0, true, false, false, msp430_section_attr
, false },
2019 { ATTR_EITHER
, 0, 0, true, false, false, msp430_section_attr
, false },
2021 { ATTR_NOINIT
, 0, 0, true, false, false, msp430_data_attr
, false },
2022 { ATTR_PERSIST
, 0, 0, true, false, false, msp430_data_attr
, false },
2024 { NULL
, 0, 0, false, false, false, NULL
, false }
2027 #undef TARGET_ASM_FUNCTION_PROLOGUE
2028 #define TARGET_ASM_FUNCTION_PROLOGUE msp430_start_function
2031 msp430_start_function (FILE *outfile
, HOST_WIDE_INT hwi_local ATTRIBUTE_UNUSED
)
2035 fprintf (outfile
, "; start of function\n");
2037 if (DECL_ATTRIBUTES (current_function_decl
) != NULL_TREE
)
2039 fprintf (outfile
, "; attributes: ");
2040 if (is_naked_func ())
2041 fprintf (outfile
, "naked ");
2042 if (msp430_is_interrupt_func ())
2043 fprintf (outfile
, "interrupt ");
2044 if (is_reentrant_func ())
2045 fprintf (outfile
, "reentrant ");
2046 if (is_critical_func ())
2047 fprintf (outfile
, "critical ");
2048 if (is_wakeup_func ())
2049 fprintf (outfile
, "wakeup ");
2050 fprintf (outfile
, "\n");
2053 fprintf (outfile
, "; framesize_regs: %d\n", cfun
->machine
->framesize_regs
);
2054 fprintf (outfile
, "; framesize_locals: %d\n", cfun
->machine
->framesize_locals
);
2055 fprintf (outfile
, "; framesize_outgoing: %d\n", cfun
->machine
->framesize_outgoing
);
2056 fprintf (outfile
, "; framesize: %d\n", cfun
->machine
->framesize
);
2057 fprintf (outfile
, "; elim ap -> fp %d\n", msp430_initial_elimination_offset (ARG_POINTER_REGNUM
, FRAME_POINTER_REGNUM
));
2058 fprintf (outfile
, "; elim fp -> sp %d\n", msp430_initial_elimination_offset (FRAME_POINTER_REGNUM
, STACK_POINTER_REGNUM
));
2061 fprintf (outfile
, "; saved regs:");
2062 for (r
= 0; r
< ARG_POINTER_REGNUM
; r
++)
2063 if (cfun
->machine
->need_to_save
[r
])
2065 fprintf (outfile
, " %s", reg_names
[r
]);
2069 fprintf (outfile
, "(none)");
2070 fprintf (outfile
, "\n");
2073 /* Common code to change the stack pointer. */
2075 increment_stack (HOST_WIDE_INT amount
)
2078 rtx sp
= stack_pointer_rtx
;
2085 inc
= GEN_INT (- amount
);
2087 F (emit_insn (gen_subpsi3 (sp
, sp
, inc
)));
2089 F (emit_insn (gen_subhi3 (sp
, sp
, inc
)));
2093 inc
= GEN_INT (amount
);
2095 emit_insn (gen_addpsi3 (sp
, sp
, inc
));
2097 emit_insn (gen_addhi3 (sp
, sp
, inc
));
2102 msp430_start_function (FILE *file
, const char *name
, tree decl
)
2106 int_attr
= lookup_attribute ("interrupt", DECL_ATTRIBUTES (decl
));
2107 if (int_attr
!= NULL_TREE
)
2109 tree intr_vector
= TREE_VALUE (int_attr
);
2111 if (intr_vector
!= NULL_TREE
)
2115 /* Interrupt vector sections should be unique, but use of weak
2116 functions implies multiple definitions. */
2117 if (DECL_WEAK (decl
))
2119 error ("argument to interrupt attribute is unsupported for weak functions");
2122 intr_vector
= TREE_VALUE (intr_vector
);
2124 /* The interrupt attribute has a vector value. Turn this into a
2125 section name, switch to that section and put the address of
2126 the current function into that vector slot. Note msp430_attr()
2127 has already verified the vector name for us. */
2128 if (TREE_CODE (intr_vector
) == STRING_CST
)
2129 sprintf (buf
, "__interrupt_vector_%.80s",
2130 TREE_STRING_POINTER (intr_vector
));
2131 else /* TREE_CODE (intr_vector) == INTEGER_CST */
2132 sprintf (buf
, "__interrupt_vector_%u",
2133 (unsigned int) TREE_INT_CST_LOW (intr_vector
));
2135 switch_to_section (get_section (buf
, SECTION_CODE
, decl
));
2136 fputs ("\t.word\t", file
);
2137 assemble_name (file
, name
);
2143 switch_to_section (function_section (decl
));
2144 ASM_OUTPUT_TYPE_DIRECTIVE(file
, name
, "function");
2145 ASM_OUTPUT_FUNCTION_LABEL (file
, name
, decl
);
2148 static const char * const lower_prefix
= ".lower";
2149 static const char * const upper_prefix
= ".upper";
2150 static const char * const either_prefix
= ".either";
2152 /* Generate a prefix for a section name, based upon
2153 the region into which the object should be placed. */
2156 gen_prefix (tree decl
)
2158 if (DECL_ONE_ONLY (decl
))
2161 /* If the user has specified a particular section then do not use any prefix. */
2162 if (has_attr ("section", decl
))
2165 /* If the object has __attribute__((lower)) then use the ".lower." prefix. */
2166 if (has_attr (ATTR_LOWER
, decl
))
2167 return lower_prefix
;
2169 /* If we are compiling for the MSP430 then we do not support the upper region. */
2173 if (has_attr (ATTR_UPPER
, decl
))
2174 return upper_prefix
;
2176 if (has_attr (ATTR_EITHER
, decl
))
2177 return either_prefix
;
2179 if (TREE_CODE (decl
) == FUNCTION_DECL
)
2181 if (msp430_code_region
== MSP430_REGION_LOWER
)
2182 return lower_prefix
;
2184 if (msp430_code_region
== MSP430_REGION_UPPER
)
2185 return upper_prefix
;
2187 if (msp430_code_region
== MSP430_REGION_EITHER
)
2188 return either_prefix
;
2192 if (msp430_data_region
== MSP430_REGION_LOWER
)
2193 return lower_prefix
;
2195 if (msp430_data_region
== MSP430_REGION_UPPER
)
2196 return upper_prefix
;
2198 if (msp430_data_region
== MSP430_REGION_EITHER
)
2199 return either_prefix
;
2205 static section
* noinit_section
;
2206 static section
* persist_section
;
2208 #undef TARGET_ASM_INIT_SECTIONS
2209 #define TARGET_ASM_INIT_SECTIONS msp430_init_sections
2212 msp430_init_sections (void)
2214 noinit_section
= get_unnamed_section (0, output_section_asm_op
, ".section .noinit,\"aw\"");
2215 persist_section
= get_unnamed_section (0, output_section_asm_op
, ".section .persistent,\"aw\"");
2218 #undef TARGET_ASM_SELECT_SECTION
2219 #define TARGET_ASM_SELECT_SECTION msp430_select_section
2222 msp430_select_section (tree decl
, int reloc
, unsigned HOST_WIDE_INT align
)
2224 gcc_assert (decl
!= NULL_TREE
);
2226 if (TREE_CODE (decl
) == STRING_CST
2227 || TREE_CODE (decl
) == CONSTRUCTOR
2228 || TREE_CODE (decl
) == INTEGER_CST
2229 || TREE_CODE (decl
) == VECTOR_CST
2230 || TREE_CODE (decl
) == COMPLEX_CST
)
2231 return default_select_section (decl
, reloc
, align
);
2233 /* In large mode we must make sure that interrupt handlers are put into
2234 low memory as the vector table only accepts 16-bit addresses. */
2235 if (TARGET_LARGE
&& TREE_CODE (decl
) == FUNCTION_DECL
&& is_interrupt_func (decl
))
2236 return get_section (".lowtext", SECTION_CODE
| SECTION_WRITE
, decl
);
2238 const char * prefix
= gen_prefix (decl
);
2241 if (TREE_CODE (decl
) == FUNCTION_DECL
)
2242 return text_section
;
2243 else if (has_attr (ATTR_NOINIT
, decl
))
2244 return noinit_section
;
2245 else if (has_attr (ATTR_PERSIST
, decl
))
2246 return persist_section
;
2248 return default_select_section (decl
, reloc
, align
);
2252 switch (categorize_decl_for_section (decl
, reloc
))
2254 case SECCAT_TEXT
: sec
= ".text"; break;
2255 case SECCAT_DATA
: sec
= ".data"; break;
2256 case SECCAT_BSS
: sec
= ".bss"; break;
2257 case SECCAT_RODATA
: sec
= ".rodata"; break;
2259 case SECCAT_RODATA_MERGE_STR
:
2260 case SECCAT_RODATA_MERGE_STR_INIT
:
2261 case SECCAT_RODATA_MERGE_CONST
:
2262 case SECCAT_SRODATA
:
2263 case SECCAT_DATA_REL
:
2264 case SECCAT_DATA_REL_LOCAL
:
2265 case SECCAT_DATA_REL_RO
:
2266 case SECCAT_DATA_REL_RO_LOCAL
:
2271 return default_select_section (decl
, reloc
, align
);
2277 const char * dec_name
= DECL_SECTION_NAME (decl
);
2278 char * name
= ACONCAT ((prefix
, sec
, dec_name
, NULL
));
2280 return get_named_section (decl
, name
, 0);
2283 #undef TARGET_ASM_FUNCTION_SECTION
2284 #define TARGET_ASM_FUNCTION_SECTION msp430_function_section
2287 msp430_function_section (tree decl
, enum node_frequency freq
, bool startup
, bool exit
)
2291 gcc_assert (DECL_SECTION_NAME (decl
) != NULL
);
2292 name
= DECL_SECTION_NAME (decl
);
2294 const char * prefix
= gen_prefix (decl
);
2296 || strncmp (name
, prefix
, strlen (prefix
)) == 0)
2297 return default_function_section (decl
, freq
, startup
, exit
);
2299 name
= ACONCAT ((prefix
, name
, NULL
));
2300 return get_named_section (decl
, name
, 0);
2303 #undef TARGET_SECTION_TYPE_FLAGS
2304 #define TARGET_SECTION_TYPE_FLAGS msp430_section_type_flags
2307 msp430_section_type_flags (tree decl
, const char * name
, int reloc
)
2309 if (strncmp (name
, lower_prefix
, strlen (lower_prefix
)) == 0)
2310 name
+= strlen (lower_prefix
);
2311 else if (strncmp (name
, upper_prefix
, strlen (upper_prefix
)) == 0)
2312 name
+= strlen (upper_prefix
);
2313 else if (strncmp (name
, either_prefix
, strlen (either_prefix
)) == 0)
2314 name
+= strlen (either_prefix
);
2315 else if (strcmp (name
, ".noinit") == 0)
2316 return SECTION_WRITE
| SECTION_BSS
| SECTION_NOTYPE
;
2317 else if (strcmp (name
, ".persistent") == 0)
2318 return SECTION_WRITE
| SECTION_NOTYPE
;
2320 return default_section_type_flags (decl
, name
, reloc
);
2323 #undef TARGET_ASM_UNIQUE_SECTION
2324 #define TARGET_ASM_UNIQUE_SECTION msp430_unique_section
2327 msp430_unique_section (tree decl
, int reloc
)
2329 gcc_assert (decl
!= NULL_TREE
);
2331 /* In large mode we must make sure that interrupt handlers are put into
2332 low memory as the vector table only accepts 16-bit addresses. */
2333 if (TARGET_LARGE
&& TREE_CODE (decl
) == FUNCTION_DECL
&& is_interrupt_func (decl
))
2335 set_decl_section_name (decl
, ".lowtext");
2339 default_unique_section (decl
, reloc
);
2341 const char * prefix
;
2343 if ( TREE_CODE (decl
) == STRING_CST
2344 || TREE_CODE (decl
) == CONSTRUCTOR
2345 || TREE_CODE (decl
) == INTEGER_CST
2346 || TREE_CODE (decl
) == VECTOR_CST
2347 || TREE_CODE (decl
) == COMPLEX_CST
2348 || (prefix
= gen_prefix (decl
)) == NULL
2352 const char * dec_name
= DECL_SECTION_NAME (decl
);
2353 char * name
= ACONCAT ((prefix
, dec_name
, NULL
));
2355 set_decl_section_name (decl
, name
);
2358 /* Emit a declaration of a common symbol.
2359 If a data region is in use then put the symbol into the
2360 equivalent .bss section instead. */
2363 msp430_output_aligned_decl_common (FILE * stream
,
2366 unsigned HOST_WIDE_INT size
,
2369 if (msp430_data_region
== MSP430_REGION_ANY
)
2371 fprintf (stream
, COMMON_ASM_OP
);
2372 assemble_name (stream
, name
);
2373 fprintf (stream
, "," HOST_WIDE_INT_PRINT_UNSIGNED
",%u\n",
2374 size
, align
/ BITS_PER_UNIT
);
2381 sec
= msp430_select_section (decl
, 0, align
);
2383 switch (msp430_data_region
)
2385 case MSP430_REGION_UPPER
: sec
= get_named_section (NULL
, ".upper.bss", 0); break;
2386 case MSP430_REGION_LOWER
: sec
= get_named_section (NULL
, ".lower.bss", 0); break;
2387 case MSP430_REGION_EITHER
: sec
= get_named_section (NULL
, ".either.bss", 0); break;
2391 gcc_assert (sec
!= NULL
);
2393 switch_to_section (sec
);
2394 ASM_OUTPUT_ALIGN (stream
, floor_log2 (align
/ BITS_PER_UNIT
));
2395 targetm
.asm_out
.globalize_label (stream
, name
);
2396 ASM_WEAKEN_LABEL (stream
, name
);
2397 ASM_OUTPUT_LABEL (stream
, name
);
2398 ASM_OUTPUT_SKIP (stream
, size
? size
: 1);
2403 msp430_do_not_relax_short_jumps (void)
2405 /* When placing code into "either" low or high memory we do not want the linker
2406 to grow the size of sections, which it can do if it is encounters a branch to
2407 a label that is too far away. So we tell the cbranch patterns to avoid using
2408 short jumps when there is a chance that the instructions will end up in a low
2411 msp430_code_region
== MSP430_REGION_EITHER
2412 || msp430_code_region
== MSP430_REGION_LOWER
2413 || has_attr (ATTR_EITHER
, current_function_decl
)
2414 || has_attr (ATTR_LOWER
, current_function_decl
);
2419 MSP430_BUILTIN_BIC_SR
,
2420 MSP430_BUILTIN_BIS_SR
,
2421 MSP430_BUILTIN_DELAY_CYCLES
,
2425 static GTY(()) tree msp430_builtins
[(int) MSP430_BUILTIN_max
];
2428 msp430_init_builtins (void)
2430 tree void_ftype_int
= build_function_type_list (void_type_node
, integer_type_node
, NULL
);
2431 tree void_ftype_longlong
= build_function_type_list (void_type_node
, long_long_integer_type_node
, NULL
);
2433 msp430_builtins
[MSP430_BUILTIN_BIC_SR
] =
2434 add_builtin_function ( "__bic_SR_register_on_exit", void_ftype_int
,
2435 MSP430_BUILTIN_BIC_SR
, BUILT_IN_MD
, NULL
, NULL_TREE
);
2437 msp430_builtins
[MSP430_BUILTIN_BIS_SR
] =
2438 add_builtin_function ( "__bis_SR_register_on_exit", void_ftype_int
,
2439 MSP430_BUILTIN_BIS_SR
, BUILT_IN_MD
, NULL
, NULL_TREE
);
2441 msp430_builtins
[MSP430_BUILTIN_DELAY_CYCLES
] =
2442 add_builtin_function ( "__delay_cycles", void_ftype_longlong
,
2443 MSP430_BUILTIN_DELAY_CYCLES
, BUILT_IN_MD
, NULL
, NULL_TREE
);
2447 msp430_builtin_decl (unsigned code
, bool initialize ATTRIBUTE_UNUSED
)
2451 case MSP430_BUILTIN_BIC_SR
:
2452 case MSP430_BUILTIN_BIS_SR
:
2453 case MSP430_BUILTIN_DELAY_CYCLES
:
2454 return msp430_builtins
[code
];
2456 return error_mark_node
;
2460 /* These constants are really register reads, which are faster than
2461 regular constants. */
2463 cg_magic_constant (HOST_WIDE_INT c
)
2481 msp430_expand_delay_cycles (rtx arg
)
2483 HOST_WIDE_INT i
, c
, n
;
2484 /* extra cycles for MSP430X instructions */
2485 #define CYCX(M,X) (msp430x ? (X) : (M))
2487 if (GET_CODE (arg
) != CONST_INT
)
2489 error ("__delay_cycles() only takes constant arguments");
2495 if (HOST_BITS_PER_WIDE_INT
> 32)
2499 error ("__delay_cycles only takes non-negative cycle counts.");
2504 emit_insn (gen_delay_cycles_start (arg
));
2506 /* For 32-bit loops, there's 13(16) + 5(min(x,0x10000) + 6x cycles. */
2507 if (c
> 3 * 0xffff + CYCX (7, 10))
2510 /* There's 4 cycles in the short (i>0xffff) loop and 7 in the long (x<=0xffff) loop */
2511 if (c
>= 0x10000 * 7 + CYCX (14, 16))
2514 c
-= CYCX (14, 16) + 7 * 0x10000;
2517 if ((unsigned long long) i
> 0xffffffffULL
)
2519 error ("__delay_cycles is limited to 32-bit loop counts.");
2525 i
= (c
- CYCX (14, 16)) / 7;
2526 c
-= CYCX (14, 16) + i
* 7;
2529 if (cg_magic_constant (i
& 0xffff))
2531 if (cg_magic_constant ((i
>> 16) & 0xffff))
2535 emit_insn (gen_delay_cycles_32x (GEN_INT (i
), GEN_INT (n
- c
)));
2537 emit_insn (gen_delay_cycles_32 (GEN_INT (i
), GEN_INT (n
- c
)));
2540 /* For 16-bit loops, there's 7(10) + 3x cycles - so the max cycles is 0x30004(7). */
2544 i
= (c
- CYCX (7, 10)) / 3;
2545 c
-= CYCX (7, 10) + i
* 3;
2547 if (cg_magic_constant (i
))
2551 emit_insn (gen_delay_cycles_16x (GEN_INT (i
), GEN_INT (n
- c
)));
2553 emit_insn (gen_delay_cycles_16 (GEN_INT (i
), GEN_INT (n
- c
)));
2558 emit_insn (gen_delay_cycles_2 ());
2564 emit_insn (gen_delay_cycles_1 ());
2568 emit_insn (gen_delay_cycles_end (arg
));
2574 msp430_expand_builtin (tree exp
,
2575 rtx target ATTRIBUTE_UNUSED
,
2576 rtx subtarget ATTRIBUTE_UNUSED
,
2577 machine_mode mode ATTRIBUTE_UNUSED
,
2578 int ignore ATTRIBUTE_UNUSED
)
2580 tree fndecl
= TREE_OPERAND (CALL_EXPR_FN (exp
), 0);
2581 unsigned int fcode
= DECL_FUNCTION_CODE (fndecl
);
2582 rtx arg1
= expand_normal (CALL_EXPR_ARG (exp
, 0));
2584 if (fcode
== MSP430_BUILTIN_DELAY_CYCLES
)
2585 return msp430_expand_delay_cycles (arg1
);
2587 if (! msp430_is_interrupt_func ())
2589 error ("MSP430 builtin functions only work inside interrupt handlers");
2593 if (! REG_P (arg1
) && ! CONSTANT_P (arg1
))
2594 arg1
= force_reg (mode
, arg1
);
2598 case MSP430_BUILTIN_BIC_SR
: emit_insn (gen_bic_SR (arg1
)); break;
2599 case MSP430_BUILTIN_BIS_SR
: emit_insn (gen_bis_SR (arg1
)); break;
2601 internal_error ("bad builtin code");
2607 #undef TARGET_INIT_BUILTINS
2608 #define TARGET_INIT_BUILTINS msp430_init_builtins
2610 #undef TARGET_EXPAND_BUILTIN
2611 #define TARGET_EXPAND_BUILTIN msp430_expand_builtin
2613 #undef TARGET_BUILTIN_DECL
2614 #define TARGET_BUILTIN_DECL msp430_builtin_decl
2617 msp430_expand_prologue (void)
2621 /* Always use stack_pointer_rtx instead of calling
2622 rtx_gen_REG ourselves. Code elsewhere in GCC assumes
2623 that there is a single rtx representing the stack pointer,
2624 namely stack_pointer_rtx, and uses == to recognize it. */
2625 rtx sp
= stack_pointer_rtx
;
2628 if (is_naked_func ())
2630 /* We must generate some RTX as thread_prologue_and_epilogue_insns()
2631 examines the output of the gen_prologue() function. */
2632 emit_insn (gen_rtx_CLOBBER (VOIDmode
, GEN_INT (0)));
2636 emit_insn (gen_prologue_start_marker ());
2638 if (is_critical_func ())
2640 emit_insn (gen_push_intr_state ());
2641 emit_insn (gen_disable_interrupts ());
2643 else if (is_reentrant_func ())
2644 emit_insn (gen_disable_interrupts ());
2646 if (!cfun
->machine
->computed
)
2647 msp430_compute_frame_info ();
2649 if (flag_stack_usage_info
)
2650 current_function_static_stack_size
= cfun
->machine
->framesize
;
2652 if (crtl
->args
.pretend_args_size
)
2656 gcc_assert (crtl
->args
.pretend_args_size
== 2);
2658 p
= emit_insn (gen_grow_and_swap ());
2660 /* Document the stack decrement... */
2661 note
= F (gen_rtx_SET (stack_pointer_rtx
,
2662 gen_rtx_MINUS (Pmode
, stack_pointer_rtx
, GEN_INT (2))));
2663 add_reg_note (p
, REG_FRAME_RELATED_EXPR
, note
);
2665 /* ...and the establishment of a new location for the return address. */
2666 note
= F (gen_rtx_SET (gen_rtx_MEM (Pmode
,
2667 gen_rtx_PLUS (Pmode
,
2671 add_reg_note (p
, REG_CFA_OFFSET
, note
);
2675 for (i
= 15; i
>= 4; i
--)
2676 if (cfun
->machine
->need_to_save
[i
])
2681 for (seq
= i
- 1; seq
>= 4 && cfun
->machine
->need_to_save
[seq
]; seq
--)
2687 /* Note: with TARGET_LARGE we still use PUSHM as PUSHX.A is two bytes bigger. */
2688 p
= F (emit_insn (gen_pushm (gen_rtx_REG (Pmode
, i
),
2691 note
= gen_rtx_SEQUENCE (VOIDmode
, rtvec_alloc (count
+ 1));
2693 XVECEXP (note
, 0, 0)
2694 = F (gen_rtx_SET (stack_pointer_rtx
,
2695 gen_rtx_PLUS (Pmode
,
2697 GEN_INT (count
* (TARGET_LARGE
? -4 : -2)))));
2699 /* *sp-- = R[i-j] */
2703 for (j
= 0; j
< count
; j
++)
2706 int ofs
= (count
- j
- 1) * (TARGET_LARGE
? 4 : 2);
2709 addr
= gen_rtx_PLUS (Pmode
, sp
, GEN_INT (ofs
));
2711 addr
= stack_pointer_rtx
;
2713 XVECEXP (note
, 0, j
+ 1) =
2714 F (gen_rtx_SET (gen_rtx_MEM (Pmode
, addr
),
2715 gen_rtx_REG (Pmode
, i
- j
)) );
2718 add_reg_note (p
, REG_FRAME_RELATED_EXPR
, note
);
2722 F (emit_insn (gen_push (gen_rtx_REG (Pmode
, i
))));
2725 if (frame_pointer_needed
)
2726 F (emit_move_insn (gen_rtx_REG (Pmode
, FRAME_POINTER_REGNUM
), sp
));
2728 fs
= cfun
->machine
->framesize_locals
+ cfun
->machine
->framesize_outgoing
;
2730 increment_stack (- fs
);
2732 emit_insn (gen_prologue_end_marker ());
2736 msp430_expand_epilogue (int is_eh
)
2742 if (is_naked_func ())
2744 /* We must generate some RTX as thread_prologue_and_epilogue_insns()
2745 examines the output of the gen_epilogue() function. */
2746 emit_insn (gen_rtx_CLOBBER (VOIDmode
, GEN_INT (0)));
2750 if (cfun
->machine
->need_to_save
[10])
2752 /* Check for a helper function. */
2753 helper_n
= 7; /* For when the loop below never sees a match. */
2754 for (i
= 9; i
>= 4; i
--)
2755 if (!cfun
->machine
->need_to_save
[i
])
2759 if (cfun
->machine
->need_to_save
[i
])
2768 emit_insn (gen_epilogue_start_marker ());
2770 if (cfun
->decl
&& strcmp (IDENTIFIER_POINTER (DECL_NAME (cfun
->decl
)), "main") == 0)
2771 emit_insn (gen_msp430_refsym_need_exit ());
2773 if (is_wakeup_func ())
2774 /* Clear the SCG1, SCG0, OSCOFF and CPUOFF bits in the saved copy of the
2775 status register current residing on the stack. When this function
2776 executes its RETI instruction the SR will be updated with this saved
2777 value, thus ensuring that the processor is woken up from any low power
2778 state in which it may be residing. */
2779 emit_insn (gen_bic_SR (GEN_INT (0xf0)));
2781 fs
= cfun
->machine
->framesize_locals
+ cfun
->machine
->framesize_outgoing
;
2783 increment_stack (fs
);
2787 /* We need to add the right "SP" register save just after the
2788 regular ones, so that when we pop it off we're in the EH
2789 return frame, not this one. This overwrites our own return
2790 address, but we're not going to be returning anyway. */
2791 rtx r12
= gen_rtx_REG (Pmode
, 12);
2792 rtx (*addPmode
)(rtx
, rtx
, rtx
) = TARGET_LARGE
? gen_addpsi3
: gen_addhi3
;
2794 /* R12 will hold the new SP. */
2795 i
= cfun
->machine
->framesize_regs
;
2796 emit_move_insn (r12
, stack_pointer_rtx
);
2797 emit_insn (addPmode (r12
, r12
, EH_RETURN_STACKADJ_RTX
));
2798 emit_insn (addPmode (r12
, r12
, GEN_INT (i
)));
2799 emit_move_insn (gen_rtx_MEM (Pmode
, plus_constant (Pmode
, stack_pointer_rtx
, i
)), r12
);
2802 for (i
= 4; i
<= 15; i
++)
2803 if (cfun
->machine
->need_to_save
[i
])
2807 for (seq
= i
+ 1; seq
<= 15 && cfun
->machine
->need_to_save
[seq
]; seq
++)
2813 /* Note: With TARGET_LARGE we still use
2814 POPM as POPX.A is two bytes bigger. */
2815 emit_insn (gen_popm (stack_pointer_rtx
, GEN_INT (seq
- 1),
2819 else if (i
== 11 - helper_n
2820 && ! msp430_is_interrupt_func ()
2821 && ! is_reentrant_func ()
2822 && ! is_critical_func ()
2823 && crtl
->args
.pretend_args_size
== 0
2824 /* Calling the helper takes as many bytes as the POP;RET sequence. */
2828 emit_insn (gen_epilogue_helper (GEN_INT (helper_n
)));
2832 emit_insn (gen_pop (gen_rtx_REG (Pmode
, i
)));
2837 /* Also pop SP, which puts us into the EH return frame. Except
2838 that you can't "pop" sp, you have to just load it off the
2840 emit_move_insn (stack_pointer_rtx
, gen_rtx_MEM (Pmode
, stack_pointer_rtx
));
2843 if (crtl
->args
.pretend_args_size
)
2844 emit_insn (gen_swap_and_shrink ());
2846 if (is_critical_func ())
2847 emit_insn (gen_pop_intr_state ());
2848 else if (is_reentrant_func ())
2849 emit_insn (gen_enable_interrupts ());
2851 emit_jump_insn (gen_msp_return ());
2854 /* Implements EH_RETURN_STACKADJ_RTX. Saved and used later in
2855 m32c_emit_eh_epilogue. */
2857 msp430_eh_return_stackadj_rtx (void)
2859 if (!cfun
->machine
->eh_stack_adjust
)
2863 sa
= gen_rtx_REG (Pmode
, 15);
2864 cfun
->machine
->eh_stack_adjust
= sa
;
2866 return cfun
->machine
->eh_stack_adjust
;
2869 /* This function is called before reload, to "fix" the stack in
2870 preparation for an EH return. */
2872 msp430_expand_eh_return (rtx eh_handler
)
2874 /* These are all Pmode */
2875 rtx ap
, sa
, ra
, tmp
;
2877 ap
= arg_pointer_rtx
;
2878 sa
= msp430_eh_return_stackadj_rtx ();
2882 tmp
= gen_rtx_PLUS (Pmode
, ap
, sa
);
2883 tmp
= plus_constant (Pmode
, tmp
, TARGET_LARGE
? -4 : -2);
2884 tmp
= gen_rtx_MEM (Pmode
, tmp
);
2885 emit_move_insn (tmp
, ra
);
2888 #undef TARGET_INIT_DWARF_REG_SIZES_EXTRA
2889 #define TARGET_INIT_DWARF_REG_SIZES_EXTRA msp430_init_dwarf_reg_sizes_extra
2891 msp430_init_dwarf_reg_sizes_extra (tree address
)
2894 rtx addr
= expand_normal (address
);
2895 rtx mem
= gen_rtx_MEM (BLKmode
, addr
);
2897 /* This needs to match msp430_unwind_word_mode (above). */
2901 for (i
= 0; i
< FIRST_PSEUDO_REGISTER
; i
++)
2903 unsigned int dnum
= DWARF_FRAME_REGNUM (i
);
2904 unsigned int rnum
= DWARF2_FRAME_REG_OUT (dnum
, 1);
2906 if (rnum
< DWARF_FRAME_REGISTERS
)
2908 HOST_WIDE_INT offset
= rnum
* GET_MODE_SIZE (QImode
);
2910 emit_move_insn (adjust_address (mem
, QImode
, offset
),
2911 gen_int_mode (4, QImode
));
2916 /* This is a list of MD patterns that implement fixed-count shifts. */
2922 rtx (*genfunc
)(rtx
,rtx
);
2924 const_shift_helpers
[] =
2926 #define CSH(N,C,X,G) { "__mspabi_" N, C, X, gen_##G }
2928 CSH ("slli", 1, 1, slli_1
),
2929 CSH ("slll", 1, 1, slll_1
),
2930 CSH ("slll", 2, 1, slll_2
),
2932 CSH ("srai", 1, 0, srai_1
),
2933 CSH ("sral", 1, 0, sral_1
),
2934 CSH ("sral", 2, 0, sral_2
),
2936 CSH ("srll", 1, 0, srll_1
),
2937 CSH ("srll", 2, 1, srll_2x
),
2942 /* The MSP430 ABI defines a number of helper functions that should be
2943 used for, for example, 32-bit shifts. This function is called to
2944 emit such a function, using the table above to optimize some
2947 msp430_expand_helper (rtx
*operands
, const char *helper_name
, bool const_variants
)
2950 char *helper_const
= NULL
;
2953 machine_mode arg0mode
= GET_MODE (operands
[0]);
2954 machine_mode arg1mode
= GET_MODE (operands
[1]);
2955 machine_mode arg2mode
= GET_MODE (operands
[2]);
2956 int have_430x
= msp430x
? 1 : 0;
2958 if (CONST_INT_P (operands
[2]))
2962 for (i
=0; const_shift_helpers
[i
].name
; i
++)
2964 if (const_shift_helpers
[i
].need_430x
<= have_430x
2965 && strcmp (helper_name
, const_shift_helpers
[i
].name
) == 0
2966 && INTVAL (operands
[2]) == const_shift_helpers
[i
].count
)
2968 emit_insn (const_shift_helpers
[i
].genfunc (operands
[0], operands
[1]));
2974 if (arg1mode
== VOIDmode
)
2975 arg1mode
= arg0mode
;
2976 if (arg2mode
== VOIDmode
)
2977 arg2mode
= arg0mode
;
2979 if (arg1mode
== SImode
)
2986 && CONST_INT_P (operands
[2])
2987 && INTVAL (operands
[2]) >= 1
2988 && INTVAL (operands
[2]) <= 15)
2990 /* Note that the INTVAL is limited in value and length by the conditional above. */
2991 int len
= strlen (helper_name
) + 4;
2992 helper_const
= (char *) xmalloc (len
);
2993 snprintf (helper_const
, len
, "%s_%d", helper_name
, (int) INTVAL (operands
[2]));
2996 emit_move_insn (gen_rtx_REG (arg1mode
, 12),
2999 emit_move_insn (gen_rtx_REG (arg2mode
, arg2
),
3002 c
= gen_call_value_internal (gen_rtx_REG (arg0mode
, 12),
3003 gen_rtx_SYMBOL_REF (VOIDmode
, helper_const
? helper_const
: helper_name
),
3005 c
= emit_call_insn (c
);
3006 RTL_CONST_CALL_P (c
) = 1;
3009 use_regs (&f
, 12, arg1sz
);
3011 use_regs (&f
, arg2
, 1);
3012 add_function_usage_to (c
, f
);
3014 emit_move_insn (operands
[0],
3015 gen_rtx_REG (arg0mode
, 12));
3018 /* Called by cbranch<mode>4 to coerce operands into usable forms. */
3020 msp430_fixup_compare_operands (machine_mode my_mode
, rtx
* operands
)
3022 /* constants we're looking for, not constants which are allowed. */
3023 int const_op_idx
= 1;
3025 if (msp430_reversible_cmp_operator (operands
[0], VOIDmode
))
3028 if (GET_CODE (operands
[const_op_idx
]) != REG
3029 && GET_CODE (operands
[const_op_idx
]) != MEM
)
3030 operands
[const_op_idx
] = copy_to_mode_reg (my_mode
, operands
[const_op_idx
]);
3033 /* Simplify_gen_subreg() doesn't handle memory references the way we
3034 need it to below, so we use this function for when we must get a
3035 valid subreg in a "natural" state. */
3037 msp430_subreg (machine_mode mode
, rtx r
, machine_mode omode
, int byte
)
3041 if (GET_CODE (r
) == SUBREG
3042 && SUBREG_BYTE (r
) == 0)
3044 rtx ireg
= SUBREG_REG (r
);
3045 machine_mode imode
= GET_MODE (ireg
);
3047 /* special case for (HI (SI (PSI ...), 0)) */
3048 if (imode
== PSImode
3051 rv
= gen_rtx_SUBREG (mode
, ireg
, byte
);
3053 rv
= simplify_gen_subreg (mode
, ireg
, imode
, byte
);
3055 else if (GET_CODE (r
) == MEM
)
3056 rv
= adjust_address (r
, mode
, byte
);
3057 else if (GET_CODE (r
) == SYMBOL_REF
3058 && (byte
== 0 || byte
== 2)
3061 rv
= gen_rtx_ZERO_EXTRACT (HImode
, r
, GEN_INT (16), GEN_INT (8*byte
));
3062 rv
= gen_rtx_CONST (HImode
, r
);
3065 rv
= simplify_gen_subreg (mode
, r
, omode
, byte
);
3073 /* Called by movsi_x to generate the HImode operands. */
3075 msp430_split_movsi (rtx
*operands
)
3077 rtx op00
, op02
, op10
, op12
;
3079 op00
= msp430_subreg (HImode
, operands
[0], SImode
, 0);
3080 op02
= msp430_subreg (HImode
, operands
[0], SImode
, 2);
3082 if (GET_CODE (operands
[1]) == CONST
3083 || GET_CODE (operands
[1]) == SYMBOL_REF
)
3085 op10
= gen_rtx_ZERO_EXTRACT (HImode
, operands
[1], GEN_INT (16), GEN_INT (0));
3086 op10
= gen_rtx_CONST (HImode
, op10
);
3087 op12
= gen_rtx_ZERO_EXTRACT (HImode
, operands
[1], GEN_INT (16), GEN_INT (16));
3088 op12
= gen_rtx_CONST (HImode
, op12
);
3092 op10
= msp430_subreg (HImode
, operands
[1], SImode
, 0);
3093 op12
= msp430_subreg (HImode
, operands
[1], SImode
, 2);
3096 if (rtx_equal_p (operands
[0], operands
[1]))
3103 else if (rtx_equal_p (op00
, op12
)
3104 /* Catch the case where we are loading (rN, rN+1) from mem (rN). */
3105 || (REG_P (op00
) && reg_mentioned_p (op00
, op10
))
3106 /* Or storing (rN) into mem (rN). */
3107 || (REG_P (op10
) && reg_mentioned_p (op10
, op00
))
3125 /* The MSPABI specifies the names of various helper functions, many of
3126 which are compatible with GCC's helpers. This table maps the GCC
3127 name to the MSPABI name. */
3130 char const * const gcc_name
;
3131 char const * const ti_name
;
3133 helper_function_name_mappings
[] =
3135 /* Floating point to/from integer conversions. */
3136 { "__truncdfsf2", "__mspabi_cvtdf" },
3137 { "__extendsfdf2", "__mspabi_cvtfd" },
3138 { "__fixdfhi", "__mspabi_fixdi" },
3139 { "__fixdfsi", "__mspabi_fixdli" },
3140 { "__fixdfdi", "__mspabi_fixdlli" },
3141 { "__fixunsdfhi", "__mspabi_fixdu" },
3142 { "__fixunsdfsi", "__mspabi_fixdul" },
3143 { "__fixunsdfdi", "__mspabi_fixdull" },
3144 { "__fixsfhi", "__mspabi_fixfi" },
3145 { "__fixsfsi", "__mspabi_fixfli" },
3146 { "__fixsfdi", "__mspabi_fixflli" },
3147 { "__fixunsfhi", "__mspabi_fixfu" },
3148 { "__fixunsfsi", "__mspabi_fixful" },
3149 { "__fixunsfdi", "__mspabi_fixfull" },
3150 { "__floathisf", "__mspabi_fltif" },
3151 { "__floatsisf", "__mspabi_fltlif" },
3152 { "__floatdisf", "__mspabi_fltllif" },
3153 { "__floathidf", "__mspabi_fltid" },
3154 { "__floatsidf", "__mspabi_fltlid" },
3155 { "__floatdidf", "__mspabi_fltllid" },
3156 { "__floatunhisf", "__mspabi_fltuf" },
3157 { "__floatunsisf", "__mspabi_fltulf" },
3158 { "__floatundisf", "__mspabi_fltullf" },
3159 { "__floatunhidf", "__mspabi_fltud" },
3160 { "__floatunsidf", "__mspabi_fltuld" },
3161 { "__floatundidf", "__mspabi_fltulld" },
3163 /* Floating point comparisons. */
3164 /* GCC uses individual functions for each comparison, TI uses one
3165 compare <=> function. */
3167 /* Floating point arithmatic */
3168 { "__adddf3", "__mspabi_addd" },
3169 { "__addsf3", "__mspabi_addf" },
3170 { "__divdf3", "__mspabi_divd" },
3171 { "__divsf3", "__mspabi_divf" },
3172 { "__muldf3", "__mspabi_mpyd" },
3173 { "__mulsf3", "__mspabi_mpyf" },
3174 { "__subdf3", "__mspabi_subd" },
3175 { "__subsf3", "__mspabi_subf" },
3176 /* GCC does not use helper functions for negation */
3178 /* Integer multiply, divide, remainder. */
3179 { "__mulhi3", "__mspabi_mpyi" },
3180 { "__mulsi3", "__mspabi_mpyl" },
3181 { "__muldi3", "__mspabi_mpyll" },
3183 /* Clarify signed vs unsigned first. */
3184 { "__mulhisi3", "__mspabi_mpysl" }, /* gcc doesn't use widening multiply (yet?) */
3185 { "__mulsidi3", "__mspabi_mpysll" }, /* gcc doesn't use widening multiply (yet?) */
3188 { "__divhi3", "__mspabi_divi" },
3189 { "__divsi3", "__mspabi_divli" },
3190 { "__divdi3", "__mspabi_divlli" },
3191 { "__udivhi3", "__mspabi_divu" },
3192 { "__udivsi3", "__mspabi_divul" },
3193 { "__udivdi3", "__mspabi_divull" },
3194 { "__modhi3", "__mspabi_remi" },
3195 { "__modsi3", "__mspabi_remli" },
3196 { "__moddi3", "__mspabi_remlli" },
3197 { "__umodhi3", "__mspabi_remu" },
3198 { "__umodsi3", "__mspabi_remul" },
3199 { "__umoddi3", "__mspabi_remull" },
3201 /* Bitwise operations. */
3202 /* Rotation - no rotation support yet. */
3203 /* Logical left shift - gcc already does these itself. */
3204 /* Arithmetic left shift - gcc already does these itself. */
3205 /* Arithmetic right shift - gcc already does these itself. */
3210 /* Returns true if the current MCU supports an F5xxx series
3211 hardware multiper. */
3214 msp430_use_f5_series_hwmult (void)
3216 static const char * cached_match
= NULL
;
3217 static bool cached_result
;
3219 if (msp430_hwmult_type
== MSP430_HWMULT_F5SERIES
)
3222 if (target_mcu
== NULL
|| msp430_hwmult_type
!= MSP430_HWMULT_AUTO
)
3225 if (target_mcu
== cached_match
)
3226 return cached_result
;
3228 cached_match
= target_mcu
;
3230 if (strncasecmp (target_mcu
, "msp430f5", 8) == 0)
3231 return cached_result
= true;
3232 if (strncasecmp (target_mcu
, "msp430fr5", 9) == 0)
3233 return cached_result
= true;
3234 if (strncasecmp (target_mcu
, "msp430f6", 8) == 0)
3235 return cached_result
= true;
3239 /* FIXME: This array is alpha sorted - we could use a binary search. */
3240 for (i
= ARRAY_SIZE (msp430_mcu_data
); i
--;)
3241 if (strcasecmp (target_mcu
, msp430_mcu_data
[i
].name
) == 0)
3242 return cached_result
= msp430_mcu_data
[i
].hwmpy
== 8;
3244 return cached_result
= false;
3247 /* Returns true if the current MCU has a second generation
3248 32-bit hardware multiplier. */
3251 use_32bit_hwmult (void)
3253 static const char * cached_match
= NULL
;
3254 static bool cached_result
;
3257 if (msp430_hwmult_type
== MSP430_HWMULT_LARGE
)
3260 if (target_mcu
== NULL
|| msp430_hwmult_type
!= MSP430_HWMULT_AUTO
)
3263 if (target_mcu
== cached_match
)
3264 return cached_result
;
3266 cached_match
= target_mcu
;
3268 /* FIXME: This array is alpha sorted - we could use a binary search. */
3269 for (i
= ARRAY_SIZE (msp430_mcu_data
); i
--;)
3270 if (strcasecmp (target_mcu
, msp430_mcu_data
[i
].name
) == 0)
3271 return cached_result
= msp430_mcu_data
[i
].hwmpy
== 4;
3273 return cached_result
= false;
3276 /* Returns true if the current MCU does not have a
3277 hardware multiplier of any kind. */
3280 msp430_no_hwmult (void)
3282 static const char * cached_match
= NULL
;
3283 static bool cached_result
;
3286 if (msp430_hwmult_type
== MSP430_HWMULT_NONE
)
3289 if (msp430_hwmult_type
!= MSP430_HWMULT_AUTO
)
3292 if (target_mcu
== NULL
)
3295 if (target_mcu
== cached_match
)
3296 return cached_result
;
3298 cached_match
= target_mcu
;
3300 /* FIXME: This array is alpha sorted - we could use a binary search. */
3301 for (i
= ARRAY_SIZE (msp430_mcu_data
); i
--;)
3302 if (strcasecmp (target_mcu
, msp430_mcu_data
[i
].name
) == 0)
3303 return cached_result
= msp430_mcu_data
[i
].hwmpy
== 0;
3305 /* If we do not recognise the MCU name, we assume that it does not support
3306 any kind of hardware multiply - this is the safest assumption to make. */
3307 return cached_result
= true;
3310 /* This function does the same as the default, but it will replace GCC
3311 function names with the MSPABI-specified ones. */
3314 msp430_output_labelref (FILE *file
, const char *name
)
3318 for (i
= 0; helper_function_name_mappings
[i
].gcc_name
; i
++)
3319 if (strcmp (helper_function_name_mappings
[i
].gcc_name
, name
) == 0)
3321 name
= helper_function_name_mappings
[i
].ti_name
;
3325 /* If we have been given a specific MCU name then we may be
3326 able to make use of its hardware multiply capabilities. */
3327 if (msp430_hwmult_type
!= MSP430_HWMULT_NONE
)
3329 if (strcmp ("__mspabi_mpyi", name
) == 0)
3331 if (msp430_use_f5_series_hwmult ())
3332 name
= "__mulhi2_f5";
3333 else if (! msp430_no_hwmult ())
3336 else if (strcmp ("__mspabi_mpyl", name
) == 0)
3338 if (msp430_use_f5_series_hwmult ())
3339 name
= "__mulsi2_f5";
3340 else if (use_32bit_hwmult ())
3341 name
= "__mulsi2_hw32";
3342 else if (! msp430_no_hwmult ())
3350 /* Common code for msp430_print_operand... */
3353 msp430_print_operand_raw (FILE * file
, rtx op
)
3357 switch (GET_CODE (op
))
3360 fprintf (file
, "%s", reg_names
[REGNO (op
)]);
3366 fprintf (file
, "%#" HOST_WIDE_INT_PRINT
"x", i
);
3368 fprintf (file
, "%" HOST_WIDE_INT_PRINT
"d", i
);
3376 output_addr_const (file
, op
);
3380 print_rtl (file
, op
);
3385 #undef TARGET_PRINT_OPERAND_ADDRESS
3386 #define TARGET_PRINT_OPERAND_ADDRESS msp430_print_operand_addr
3388 /* Output to stdio stream FILE the assembler syntax for an
3389 instruction operand that is a memory reference whose address
3393 msp430_print_operand_addr (FILE * file
, machine_mode
/*mode*/, rtx addr
)
3395 switch (GET_CODE (addr
))
3398 msp430_print_operand_raw (file
, XEXP (addr
, 1));
3399 gcc_assert (REG_P (XEXP (addr
, 0)));
3400 fprintf (file
, "(%s)", reg_names
[REGNO (XEXP (addr
, 0))]);
3404 fprintf (file
, "@");
3411 fprintf (file
, "&");
3418 msp430_print_operand_raw (file
, addr
);
3421 #undef TARGET_PRINT_OPERAND
3422 #define TARGET_PRINT_OPERAND msp430_print_operand
3424 /* A low 16-bits of int/lower of register pair
3425 B high 16-bits of int/higher of register pair
3426 C bits 32-47 of a 64-bit value/reg 3 of a DImode value
3427 D bits 48-63 of a 64-bit value/reg 4 of a DImode value
3428 H like %B (for backwards compatibility)
3430 J an integer without a # prefix
3431 L like %A (for backwards compatibility)
3432 O offset of the top of the stack
3433 Q like X but generates an A postfix
3434 R inverse of condition code, unsigned.
3435 X X instruction postfix in large mode
3438 b .B or .W or .A, depending upon the mode
3440 r inverse of condition code
3441 x like X but only for pointers. */
3444 msp430_print_operand (FILE * file
, rtx op
, int letter
)
3448 /* We can't use c, n, a, or l. */
3452 gcc_assert (CONST_INT_P (op
));
3453 /* Print the constant value, less one. */
3454 fprintf (file
, "#%ld", INTVAL (op
) - 1);
3457 gcc_assert (CONST_INT_P (op
));
3458 /* Print the constant value, less four. */
3459 fprintf (file
, "#%ld", INTVAL (op
) - 4);
3462 if (GET_CODE (op
) == CONST_INT
)
3464 /* Inverse of constants */
3465 int i
= INTVAL (op
);
3466 fprintf (file
, "%d", ~i
);
3471 case 'r': /* Conditional jump where the condition is reversed. */
3472 switch (GET_CODE (op
))
3474 case EQ
: fprintf (file
, "NE"); break;
3475 case NE
: fprintf (file
, "EQ"); break;
3476 case GEU
: fprintf (file
, "LO"); break;
3477 case LTU
: fprintf (file
, "HS"); break;
3478 case GE
: fprintf (file
, "L"); break;
3479 case LT
: fprintf (file
, "GE"); break;
3480 /* Assume these have reversed operands. */
3481 case GTU
: fprintf (file
, "HS"); break;
3482 case LEU
: fprintf (file
, "LO"); break;
3483 case GT
: fprintf (file
, "GE"); break;
3484 case LE
: fprintf (file
, "L"); break;
3486 msp430_print_operand_raw (file
, op
);
3490 case 'R': /* Conditional jump where the operands are reversed. */
3491 switch (GET_CODE (op
))
3493 case GTU
: fprintf (file
, "LO"); break;
3494 case LEU
: fprintf (file
, "HS"); break;
3495 case GT
: fprintf (file
, "L"); break;
3496 case LE
: fprintf (file
, "GE"); break;
3498 msp430_print_operand_raw (file
, op
);
3502 case 'p': /* Bit position. 0 == 0x01, 3 = 0x08 etc. */
3503 gcc_assert (CONST_INT_P (op
));
3504 fprintf (file
, "#%d", 1 << INTVAL (op
));
3507 switch (GET_MODE (op
))
3509 case QImode
: fprintf (file
, ".B"); return;
3510 case HImode
: fprintf (file
, ".W"); return;
3511 case PSImode
: fprintf (file
, ".A"); return;
3512 case SImode
: fprintf (file
, ".A"); return;
3517 case 'L': /* Low half. */
3518 switch (GET_CODE (op
))
3521 op
= adjust_address (op
, Pmode
, 0);
3526 op
= GEN_INT (INTVAL (op
) & 0xffff);
3530 /* If you get here, figure out a test case :-) */
3535 case 'H': /* high half */
3536 switch (GET_CODE (op
))
3539 op
= adjust_address (op
, Pmode
, 2);
3542 op
= gen_rtx_REG (Pmode
, REGNO (op
) + 1);
3545 op
= GEN_INT (INTVAL (op
) >> 16);
3549 /* If you get here, figure out a test case :-) */
3554 switch (GET_CODE (op
))
3557 op
= adjust_address (op
, Pmode
, 3);
3560 op
= gen_rtx_REG (Pmode
, REGNO (op
) + 2);
3563 op
= GEN_INT ((long long) INTVAL (op
) >> 32);
3567 /* If you get here, figure out a test case :-) */
3572 switch (GET_CODE (op
))
3575 op
= adjust_address (op
, Pmode
, 4);
3578 op
= gen_rtx_REG (Pmode
, REGNO (op
) + 3);
3581 op
= GEN_INT ((long long) INTVAL (op
) >> 48);
3585 /* If you get here, figure out a test case :-) */
3591 /* This is used to turn, for example, an ADD opcode into an ADDX
3592 opcode when we're using 20-bit addresses. */
3593 if (TARGET_LARGE
|| GET_MODE (op
) == PSImode
)
3594 fprintf (file
, "X");
3595 /* We don't care which operand we use, but we want 'X' in the MD
3596 file, so we do it this way. */
3600 /* Similarly, but only for PSImodes. BIC, for example, needs this. */
3601 if (GET_MODE (op
) == PSImode
)
3602 fprintf (file
, "X");
3606 /* Likewise, for BR -> BRA. */
3608 fprintf (file
, "A");
3612 /* Computes the offset to the top of the stack for the current frame.
3613 This has to be done here rather than in, say, msp430_expand_builtin()
3614 because builtins are expanded before the frame layout is determined. */
3615 fprintf (file
, "%d",
3616 msp430_initial_elimination_offset (ARG_POINTER_REGNUM
, STACK_POINTER_REGNUM
)
3617 - (TARGET_LARGE
? 4 : 2));
3621 gcc_assert (GET_CODE (op
) == CONST_INT
);
3625 output_operand_lossage ("invalid operand prefix");
3629 switch (GET_CODE (op
))
3632 msp430_print_operand_raw (file
, op
);
3636 addr
= XEXP (op
, 0);
3637 msp430_print_operand_addr (file
, GET_MODE (op
), addr
);
3641 if (GET_CODE (XEXP (op
, 0)) == ZERO_EXTRACT
)
3644 switch (INTVAL (XEXP (op
, 2)))
3647 fprintf (file
, "#lo (");
3648 msp430_print_operand_raw (file
, XEXP (op
, 0));
3649 fprintf (file
, ")");
3653 fprintf (file
, "#hi (");
3654 msp430_print_operand_raw (file
, XEXP (op
, 0));
3655 fprintf (file
, ")");
3659 output_operand_lossage ("invalid zero extract");
3669 fprintf (file
, "#");
3670 msp430_print_operand_raw (file
, op
);
3673 case EQ
: fprintf (file
, "EQ"); break;
3674 case NE
: fprintf (file
, "NE"); break;
3675 case GEU
: fprintf (file
, "HS"); break;
3676 case LTU
: fprintf (file
, "LO"); break;
3677 case GE
: fprintf (file
, "GE"); break;
3678 case LT
: fprintf (file
, "L"); break;
3681 print_rtl (file
, op
);
3690 msp430_return_addr_rtx (int count
)
3696 ra_size
= TARGET_LARGE
? 4 : 2;
3697 if (crtl
->args
.pretend_args_size
)
3700 return gen_rtx_MEM (Pmode
, gen_rtx_PLUS (Pmode
, arg_pointer_rtx
, GEN_INT (- ra_size
)));
3704 msp430_incoming_return_addr_rtx (void)
3706 return gen_rtx_MEM (Pmode
, stack_pointer_rtx
);
3709 /* Instruction generation stuff. */
3711 /* Generate a sequence of instructions to sign-extend an HI
3712 value into an SI value. Handles the tricky case where
3713 we are overwriting the destination. */
3716 msp430x_extendhisi (rtx
* operands
)
3718 if (REGNO (operands
[0]) == REGNO (operands
[1]))
3719 /* Low word of dest == source word. */
3720 return "BIT.W\t#0x8000, %L0 { SUBC.W\t%H0, %H0 { INV.W\t%H0, %H0"; /* 8-bytes. */
3723 /* Note: This sequence is approximately the same length as invoking a helper
3724 function to perform the sign-extension, as in:
3728 CALL __mspabi_srai_15
3731 but this version does not involve any function calls or using argument
3732 registers, so it reduces register pressure. */
3733 return "MOV.W\t%1, %L0 { BIT.W\t#0x8000, %L0 { SUBC.W\t%H0, %H0 { INV.W\t%H0, %H0"; /* 10-bytes. */
3735 if (REGNO (operands
[0]) + 1 == REGNO (operands
[1]))
3736 /* High word of dest == source word. */
3737 return "MOV.W\t%1, %L0 { RPT\t#15 { RRAX.W\t%H0"; /* 6-bytes. */
3739 /* No overlap between dest and source. */
3740 return "MOV.W\t%1, %L0 { MOV.W\t%1, %H0 { RPT\t#15 { RRAX.W\t%H0"; /* 8-bytes. */
3743 /* Likewise for logical right shifts. */
3745 msp430x_logical_shift_right (rtx amount
)
3747 /* The MSP430X's logical right shift instruction - RRUM - does
3748 not use an extension word, so we cannot encode a repeat count.
3749 Try various alternatives to work around this. If the count
3750 is in a register we are stuck, hence the assert. */
3751 gcc_assert (CONST_INT_P (amount
));
3753 if (INTVAL (amount
) <= 0
3754 || INTVAL (amount
) >= 16)
3755 return "# nop logical shift.";
3757 if (INTVAL (amount
) > 0
3758 && INTVAL (amount
) < 5)
3759 return "rrum.w\t%2, %0"; /* Two bytes. */
3761 if (INTVAL (amount
) > 4
3762 && INTVAL (amount
) < 9)
3763 return "rrum.w\t#4, %0 { rrum.w\t%Y2, %0 "; /* Four bytes. */
3765 /* First we logically shift right by one. Now we know
3766 that the top bit is zero and we can use the arithmetic
3767 right shift instruction to perform the rest of the shift. */
3768 return "rrum.w\t#1, %0 { rpt\t%Z2 { rrax.w\t%0"; /* Six bytes. */
3771 struct gcc_target targetm
= TARGET_INITIALIZER
;
3773 #include "gt-msp430.h"