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* config/arm/elf.h (ASM_OUTPUT_ALIGNED_COMMON): Remove definition.
[official-gcc.git] / gcc / f / ste.c
bloba1f355b7b17ea7c20690322928c6d9edf1888a1e
1 /* ste.c -- Implementation File (module.c template V1.0)
2 Copyright (C) 1995, 1996, 2000, 2002, 2003 Free Software Foundation, Inc.
3 Contributed by James Craig Burley.
4
5 This file is part of GNU Fortran.
6
7 GNU Fortran 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 2, or (at your option)
10 any later version.
11
12 GNU Fortran 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.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Fortran; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA.
21
22 Related Modules:
23 ste.c
24
25 Description:
26 Implements the various statements and such like.
27
28 Modifications:
29 */
30
31 /* Include files. */
32
33 #include "proj.h"
34 #include "rtl.h"
35 #include "toplev.h"
36 #include "ggc.h"
37 #include "ste.h"
38 #include "bld.h"
39 #include "com.h"
40 #include "expr.h"
41 #include "lab.h"
42 #include "lex.h"
43 #include "sta.h"
44 #include "stp.h"
45 #include "str.h"
46 #include "sts.h"
47 #include "stt.h"
48 #include "stv.h"
49 #include "stw.h"
50 #include "symbol.h"
51
52 /* Externals defined here. */
53
54
55 /* Simple definitions and enumerations. */
56
57 typedef enum
58 {
59 FFESTE_stateletSIMPLE_, /* Expecting simple/start. */
60 FFESTE_stateletATTRIB_, /* Expecting attrib/item/itemstart. */
61 FFESTE_stateletITEM_, /* Expecting item/itemstart/finish. */
62 FFESTE_stateletITEMVALS_, /* Expecting itemvalue/itemendvals. */
63 FFESTE_
64 } ffesteStatelet_;
65
66 /* Internal typedefs. */
67
68
69 /* Private include files. */
70
71
72 /* Internal structure definitions. */
73
74
75 /* Static objects accessed by functions in this module. */
76
77 static ffesteStatelet_ ffeste_statelet_ = FFESTE_stateletSIMPLE_;
78 static ffelab ffeste_label_formatdef_ = NULL;
79 static tree (*ffeste_io_driver_) (ffebld expr); /* do?io. */
80 static ffecomGfrt ffeste_io_endgfrt_; /* end function to call. */
81 static tree ffeste_io_abort_; /* abort-io label or NULL_TREE. */
82 static bool ffeste_io_abort_is_temp_; /* abort-io label is a temp. */
83 static tree ffeste_io_end_; /* END= label or NULL_TREE. */
84 static tree ffeste_io_err_; /* ERR= label or NULL_TREE. */
85 static tree ffeste_io_iostat_; /* IOSTAT= var or NULL_TREE. */
86 static bool ffeste_io_iostat_is_temp_; /* IOSTAT= var is a temp. */
87
88 /* Static functions (internal). */
89
90 static void ffeste_begin_iterdo_ (ffestw block, tree *tvar, tree *tincr,
91 tree *xitersvar, ffebld var,
92 ffebld start, ffelexToken start_token,
93 ffebld end, ffelexToken end_token,
94 ffebld incr, ffelexToken incr_token,
95 const char *msg);
96 static void ffeste_end_iterdo_ (ffestw block, tree tvar, tree tincr,
97 tree itersvar);
98 static void ffeste_io_call_ (tree call, bool do_check);
99 static void ffeste_io_impdo_ (ffebld impdo, ffelexToken impdo_token);
100 static tree ffeste_io_dofio_ (ffebld expr);
101 static tree ffeste_io_dolio_ (ffebld expr);
102 static tree ffeste_io_douio_ (ffebld expr);
103 static tree ffeste_io_ialist_ (bool have_err, ffestvUnit unit,
104 ffebld unit_expr, int unit_dflt);
105 static tree ffeste_io_cilist_ (bool have_err, ffestvUnit unit,
106 ffebld unit_expr, int unit_dflt,
107 bool have_end, ffestvFormat format,
108 ffestpFile *format_spec, bool rec,
109 ffebld rec_expr);
110 static tree ffeste_io_cllist_ (bool have_err, ffebld unit_expr,
111 ffestpFile *stat_spec);
112 static tree ffeste_io_icilist_ (bool have_err, ffebld unit_expr,
113 bool have_end, ffestvFormat format,
114 ffestpFile *format_spec);
115 static tree ffeste_io_inlist_ (bool have_err,
116 ffestpFile *unit_spec,
117 ffestpFile *file_spec,
118 ffestpFile *exist_spec,
119 ffestpFile *open_spec,
120 ffestpFile *number_spec,
121 ffestpFile *named_spec,
122 ffestpFile *name_spec,
123 ffestpFile *access_spec,
124 ffestpFile *sequential_spec,
125 ffestpFile *direct_spec,
126 ffestpFile *form_spec,
127 ffestpFile *formatted_spec,
128 ffestpFile *unformatted_spec,
129 ffestpFile *recl_spec,
130 ffestpFile *nextrec_spec,
131 ffestpFile *blank_spec);
132 static tree ffeste_io_olist_ (bool have_err, ffebld unit_expr,
133 ffestpFile *file_spec,
134 ffestpFile *stat_spec,
135 ffestpFile *access_spec,
136 ffestpFile *form_spec,
137 ffestpFile *recl_spec,
138 ffestpFile *blank_spec);
139 static void ffeste_subr_beru_ (ffestpBeruStmt *info, ffecomGfrt rt);
140
141 /* Internal macros. */
142
143 #define ffeste_emit_line_note_() \
144 emit_line_note (input_filename, lineno)
145 #define ffeste_check_simple_() \
146 assert(ffeste_statelet_ == FFESTE_stateletSIMPLE_)
147 #define ffeste_check_start_() \
148 assert(ffeste_statelet_ == FFESTE_stateletSIMPLE_); \
149 ffeste_statelet_ = FFESTE_stateletATTRIB_
150 #define ffeste_check_attrib_() \
151 assert(ffeste_statelet_ == FFESTE_stateletATTRIB_)
152 #define ffeste_check_item_() \
153 assert(ffeste_statelet_ == FFESTE_stateletATTRIB_ \
154 || ffeste_statelet_ == FFESTE_stateletITEM_); \
155 ffeste_statelet_ = FFESTE_stateletITEM_
156 #define ffeste_check_item_startvals_() \
157 assert(ffeste_statelet_ == FFESTE_stateletATTRIB_ \
158 || ffeste_statelet_ == FFESTE_stateletITEM_); \
159 ffeste_statelet_ = FFESTE_stateletITEMVALS_
160 #define ffeste_check_item_value_() \
161 assert(ffeste_statelet_ == FFESTE_stateletITEMVALS_)
162 #define ffeste_check_item_endvals_() \
163 assert(ffeste_statelet_ == FFESTE_stateletITEMVALS_); \
164 ffeste_statelet_ = FFESTE_stateletITEM_
165 #define ffeste_check_finish_() \
166 assert(ffeste_statelet_ == FFESTE_stateletATTRIB_ \
167 || ffeste_statelet_ == FFESTE_stateletITEM_); \
168 ffeste_statelet_ = FFESTE_stateletSIMPLE_
169
170 #define ffeste_f2c_init_charnolen_(Exp,Init,Spec) \
171 do \
172 { \
173 if ((Spec)->kw_or_val_present) \
174 Exp = ffecom_arg_ptr_to_const_expr ((Spec)->u.expr, &ignore); \
175 else \
176 Exp = null_pointer_node; \
177 if (Exp) \
178 Init = Exp; \
179 else \
180 { \
181 Init = null_pointer_node; \
182 constantp = FALSE; \
183 } \
184 } while(0)
185
186 #define ffeste_f2c_init_char_(Exp,Init,Lenexp,Leninit,Spec) \
187 do \
188 { \
189 if ((Spec)->kw_or_val_present) \
190 Exp = ffecom_arg_ptr_to_const_expr ((Spec)->u.expr, &Lenexp); \
191 else \
192 { \
193 Exp = null_pointer_node; \
194 Lenexp = ffecom_f2c_ftnlen_zero_node; \
195 } \
196 if (Exp) \
197 Init = Exp; \
198 else \
199 { \
200 Init = null_pointer_node; \
201 constantp = FALSE; \
202 } \
203 if (Lenexp) \
204 Leninit = Lenexp; \
205 else \
206 { \
207 Leninit = ffecom_f2c_ftnlen_zero_node; \
208 constantp = FALSE; \
209 } \
210 } while(0)
211
212 #define ffeste_f2c_init_flag_(Flag,Init) \
213 do \
214 { \
215 Init = convert (ffecom_f2c_flag_type_node, \
216 (Flag) ? integer_one_node : integer_zero_node); \
217 } while(0)
218
219 #define ffeste_f2c_init_format_(Exp,Init,Spec) \
220 do \
221 { \
222 Exp = ffecom_arg_ptr_to_const_expr ((Spec)->u.expr, NULL); \
223 if (Exp) \
224 Init = Exp; \
225 else \
226 { \
227 Init = null_pointer_node; \
228 constantp = FALSE; \
229 } \
230 } while(0)
231
232 #define ffeste_f2c_init_int_(Exp,Init,Spec) \
233 do \
234 { \
235 if ((Spec)->kw_or_val_present) \
236 Exp = ffecom_const_expr ((Spec)->u.expr); \
237 else \
238 Exp = ffecom_integer_zero_node; \
239 if (Exp) \
240 Init = Exp; \
241 else \
242 { \
243 Init = ffecom_integer_zero_node; \
244 constantp = FALSE; \
245 } \
246 } while(0)
247
248 #define ffeste_f2c_init_ptrtoint_(Exp,Init,Spec) \
249 do \
250 { \
251 if ((Spec)->kw_or_val_present) \
252 Exp = ffecom_ptr_to_const_expr ((Spec)->u.expr); \
253 else \
254 Exp = null_pointer_node; \
255 if (Exp) \
256 Init = Exp; \
257 else \
258 { \
259 Init = null_pointer_node; \
260 constantp = FALSE; \
261 } \
262 } while(0)
263
264 #define ffeste_f2c_init_next_(Init) \
265 do \
266 { \
267 TREE_CHAIN (initn) = build_tree_list ((field = TREE_CHAIN (field)), \
268 (Init)); \
269 initn = TREE_CHAIN(initn); \
270 } while(0)
271
272 #define ffeste_f2c_prepare_charnolen_(Spec,Exp) \
273 do \
274 { \
275 if (! (Exp)) \
276 ffecom_prepare_arg_ptr_to_expr ((Spec)->u.expr); \
277 } while(0)
278
279 #define ffeste_f2c_prepare_char_(Spec,Exp) \
280 do \
281 { \
282 if (! (Exp)) \
283 ffecom_prepare_arg_ptr_to_expr ((Spec)->u.expr); \
284 } while(0)
285
286 #define ffeste_f2c_prepare_format_(Spec,Exp) \
287 do \
288 { \
289 if (! (Exp)) \
290 ffecom_prepare_arg_ptr_to_expr ((Spec)->u.expr); \
291 } while(0)
292
293 #define ffeste_f2c_prepare_int_(Spec,Exp) \
294 do \
295 { \
296 if (! (Exp)) \
297 ffecom_prepare_expr ((Spec)->u.expr); \
298 } while(0)
299
300 #define ffeste_f2c_prepare_ptrtoint_(Spec,Exp) \
301 do \
302 { \
303 if (! (Exp)) \
304 ffecom_prepare_ptr_to_expr ((Spec)->u.expr); \
305 } while(0)
306
307 #define ffeste_f2c_compile_(Field,Exp) \
308 do \
309 { \
310 tree exz; \
311 if ((Exp)) \
312 { \
313 exz = ffecom_modify (void_type_node, \
314 ffecom_2 (COMPONENT_REF, TREE_TYPE (Field), \
315 t, (Field)), \
316 (Exp)); \
317 expand_expr_stmt (exz); \
318 } \
319 } while(0)
320
321 #define ffeste_f2c_compile_charnolen_(Field,Spec,Exp) \
322 do \
323 { \
324 tree exq; \
325 if (! (Exp)) \
326 { \
327 exq = ffecom_arg_ptr_to_expr ((Spec)->u.expr, &ignore); \
328 ffeste_f2c_compile_ ((Field), exq); \
329 } \
330 } while(0)
331
332 #define ffeste_f2c_compile_char_(Field,Lenfield,Spec,Exp,Lenexp) \
333 do \
334 { \
335 tree exq = (Exp); \
336 tree lenexq = (Lenexp); \
337 int need_exq = (! exq); \
338 int need_lenexq = (! lenexq); \
339 if (need_exq || need_lenexq) \
340 { \
341 exq = ffecom_arg_ptr_to_expr ((Spec)->u.expr, &lenexq); \
342 if (need_exq) \
343 ffeste_f2c_compile_ ((Field), exq); \
344 if (need_lenexq) \
345 ffeste_f2c_compile_ ((Lenfield), lenexq); \
346 } \
347 } while(0)
348
349 #define ffeste_f2c_compile_format_(Field,Spec,Exp) \
350 do \
351 { \
352 tree exq; \
353 if (! (Exp)) \
354 { \
355 exq = ffecom_arg_ptr_to_expr ((Spec)->u.expr, NULL); \
356 ffeste_f2c_compile_ ((Field), exq); \
357 } \
358 } while(0)
359
360 #define ffeste_f2c_compile_int_(Field,Spec,Exp) \
361 do \
362 { \
363 tree exq; \
364 if (! (Exp)) \
365 { \
366 exq = ffecom_expr ((Spec)->u.expr); \
367 ffeste_f2c_compile_ ((Field), exq); \
368 } \
369 } while(0)
370
371 #define ffeste_f2c_compile_ptrtoint_(Field,Spec,Exp) \
372 do \
373 { \
374 tree exq; \
375 if (! (Exp)) \
376 { \
377 exq = ffecom_ptr_to_expr ((Spec)->u.expr); \
378 ffeste_f2c_compile_ ((Field), exq); \
379 } \
380 } while(0)
381 \f
382 /* Start a Fortran block. */
383
384 #ifdef ENABLE_CHECKING
385
386 typedef struct gbe_block
387 {
388 struct gbe_block *outer;
389 ffestw block;
390 int lineno;
391 const char *input_filename;
392 bool is_stmt;
393 } *gbe_block;
394
395 gbe_block ffeste_top_block_ = NULL;
396
397 static void
398 ffeste_start_block_ (ffestw block)
399 {
400 gbe_block b = xmalloc (sizeof (*b));
401
402 b->outer = ffeste_top_block_;
403 b->block = block;
404 b->lineno = lineno;
405 b->input_filename = input_filename;
406 b->is_stmt = FALSE;
407
408 ffeste_top_block_ = b;
409
410 ffecom_start_compstmt ();
411 }
412
413 /* End a Fortran block. */
414
415 static void
416 ffeste_end_block_ (ffestw block)
417 {
418 gbe_block b = ffeste_top_block_;
419
420 assert (b);
421 assert (! b->is_stmt);
422 assert (b->block == block);
423 assert (! b->is_stmt);
424
425 ffeste_top_block_ = b->outer;
426
427 free (b);
428
429 ffecom_end_compstmt ();
430 }
431
432 /* Start a Fortran statement.
433
434 Starts a back-end block, so temporaries can be managed, clean-ups
435 properly handled, etc. Nesting of statements *is* allowed -- the
436 handling of I/O items, even implied-DO I/O lists, within a READ,
437 PRINT, or WRITE statement is one example. */
438
439 static void
440 ffeste_start_stmt_(void)
441 {
442 gbe_block b = xmalloc (sizeof (*b));
443
444 b->outer = ffeste_top_block_;
445 b->block = NULL;
446 b->lineno = lineno;
447 b->input_filename = input_filename;
448 b->is_stmt = TRUE;
449
450 ffeste_top_block_ = b;
451
452 ffecom_start_compstmt ();
453 }
454
455 /* End a Fortran statement. */
456
457 static void
458 ffeste_end_stmt_(void)
459 {
460 gbe_block b = ffeste_top_block_;
461
462 assert (b);
463 assert (b->is_stmt);
464
465 ffeste_top_block_ = b->outer;
466
467 free (b);
468
469 ffecom_end_compstmt ();
470 }
471
472 #else /* ! defined (ENABLE_CHECKING) */
473
474 #define ffeste_start_block_(b) ffecom_start_compstmt ()
475 #define ffeste_end_block_(b) \
476 do \
477 { \
478 ffecom_end_compstmt (); \
479 } while(0)
480 #define ffeste_start_stmt_() ffeste_start_block_(NULL)
481 #define ffeste_end_stmt_() ffeste_end_block_(NULL)
482
483 #endif /* ! defined (ENABLE_CHECKING) */
484
485 /* Begin an iterative DO loop. Pass the block to start if
486 applicable. */
487
488 static void
489 ffeste_begin_iterdo_ (ffestw block, tree *xtvar, tree *xtincr,
490 tree *xitersvar, ffebld var,
491 ffebld start, ffelexToken start_token,
492 ffebld end, ffelexToken end_token,
493 ffebld incr, ffelexToken incr_token,
494 const char *msg)
495 {
496 tree tvar;
497 tree expr;
498 tree tstart;
499 tree tend;
500 tree tincr;
501 tree tincr_saved;
502 tree niters;
503 struct nesting *expanded_loop;
504
505 /* Want to have tvar, tincr, and niters for the whole loop body. */
506
507 if (block)
508 ffeste_start_block_ (block);
509 else
510 ffeste_start_stmt_ ();
511
512 niters = ffecom_make_tempvar (block ? "do" : "impdo",
513 ffecom_integer_type_node,
514 FFETARGET_charactersizeNONE, -1);
515
516 ffecom_prepare_expr (incr);
517 ffecom_prepare_expr_rw (NULL_TREE, var);
518
519 ffecom_prepare_end ();
520
521 tvar = ffecom_expr_rw (NULL_TREE, var);
522 tincr = ffecom_expr (incr);
523
524 if (TREE_CODE (tvar) == ERROR_MARK
525 || TREE_CODE (tincr) == ERROR_MARK)
526 {
527 if (block)
528 {
529 ffeste_end_block_ (block);
530 ffestw_set_do_tvar (block, error_mark_node);
531 }
532 else
533 {
534 ffeste_end_stmt_ ();
535 *xtvar = error_mark_node;
536 }
537 return;
538 }
539
540 /* Check whether incr is known to be zero, complain and fix. */
541
542 if (integer_zerop (tincr) || real_zerop (tincr))
543 {
544 ffebad_start (FFEBAD_DO_STEP_ZERO);
545 ffebad_here (0, ffelex_token_where_line (incr_token),
546 ffelex_token_where_column (incr_token));
547 ffebad_string (msg);
548 ffebad_finish ();
549 tincr = convert (TREE_TYPE (tvar), integer_one_node);
550 }
551
552 tincr_saved = ffecom_save_tree (tincr);
553
554 /* Want to have tstart, tend for just this statement. */
555
556 ffeste_start_stmt_ ();
557
558 ffecom_prepare_expr (start);
559 ffecom_prepare_expr (end);
560
561 ffecom_prepare_end ();
562
563 tstart = ffecom_expr (start);
564 tend = ffecom_expr (end);
565
566 if (TREE_CODE (tstart) == ERROR_MARK
567 || TREE_CODE (tend) == ERROR_MARK)
568 {
569 ffeste_end_stmt_ ();
570
571 if (block)
572 {
573 ffeste_end_block_ (block);
574 ffestw_set_do_tvar (block, error_mark_node);
575 }
576 else
577 {
578 ffeste_end_stmt_ ();
579 *xtvar = error_mark_node;
580 }
581 return;
582 }
583
584 /* For warnings only, nothing else happens here. */
585 {
586 tree try;
587
588 if (! ffe_is_onetrip ())
589 {
590 try = ffecom_2 (MINUS_EXPR, TREE_TYPE (tvar),
591 tend,
592 tstart);
593
594 try = ffecom_2 (PLUS_EXPR, TREE_TYPE (tvar),
595 try,
596 tincr);
597
598 if (TREE_CODE (TREE_TYPE (tvar)) != REAL_TYPE)
599 try = ffecom_2 (TRUNC_DIV_EXPR, integer_type_node, try,
600 tincr);
601 else
602 try = convert (integer_type_node,
603 ffecom_2 (RDIV_EXPR, TREE_TYPE (tvar),
604 try,
605 tincr));
606
607 /* Warn if loop never executed, since we've done the evaluation
608 of the unofficial iteration count already. */
609
610 try = ffecom_truth_value (ffecom_2 (LE_EXPR, integer_type_node,
611 try,
612 convert (TREE_TYPE (tvar),
613 integer_zero_node)));
614
615 if (integer_onep (try))
616 {
617 ffebad_start (FFEBAD_DO_NULL);
618 ffebad_here (0, ffelex_token_where_line (start_token),
619 ffelex_token_where_column (start_token));
620 ffebad_string (msg);
621 ffebad_finish ();
622 }
623 }
624
625 /* Warn if end plus incr would overflow. */
626
627 try = ffecom_2 (PLUS_EXPR, TREE_TYPE (tvar),
628 tend,
629 tincr);
630
631 if ((TREE_CODE_CLASS (TREE_CODE (try)) == 'c')
632 && TREE_CONSTANT_OVERFLOW (try))
633 {
634 ffebad_start (FFEBAD_DO_END_OVERFLOW);
635 ffebad_here (0, ffelex_token_where_line (end_token),
636 ffelex_token_where_column (end_token));
637 ffebad_string (msg);
638 ffebad_finish ();
639 }
640 }
641
642 /* Do the initial assignment into the DO var. */
643
644 tstart = ffecom_save_tree (tstart);
645
646 expr = ffecom_2 (MINUS_EXPR, TREE_TYPE (tvar),
647 tend,
648 tstart);
649
650 if (! ffe_is_onetrip ())
651 {
652 expr = ffecom_2 (PLUS_EXPR, TREE_TYPE (expr),
653 expr,
654 convert (TREE_TYPE (expr), tincr_saved));
655 }
656
657 if (TREE_CODE (TREE_TYPE (tvar)) != REAL_TYPE)
658 expr = ffecom_2 (TRUNC_DIV_EXPR, TREE_TYPE (expr),
659 expr,
660 tincr_saved);
661 else
662 expr = ffecom_2 (RDIV_EXPR, TREE_TYPE (expr),
663 expr,
664 tincr_saved);
665
666 #if 1 /* New, F90-approved approach: convert to default INTEGER. */
667 if (TREE_TYPE (tvar) != error_mark_node)
668 expr = convert (ffecom_integer_type_node, expr);
669 #else /* Old approach; convert to INTEGER unless that's a narrowing. */
670 if ((TREE_TYPE (tvar) != error_mark_node)
671 && ((TREE_CODE (TREE_TYPE (tvar)) != INTEGER_TYPE)
672 || ((TYPE_SIZE (TREE_TYPE (tvar)) != NULL_TREE)
673 && ((TREE_CODE (TYPE_SIZE (TREE_TYPE (tvar)))
674 != INTEGER_CST)
675 || (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (tvar)))
676 <= TREE_INT_CST_LOW (TYPE_SIZE (ffecom_integer_type_node)))))))
677 /* Convert unless promoting INTEGER type of any kind downward to
678 default INTEGER; else leave as, say, INTEGER*8 (long long int). */
679 expr = convert (ffecom_integer_type_node, expr);
680 #endif
681
682 assert (TYPE_MAIN_VARIANT (TREE_TYPE (niters))
683 == TYPE_MAIN_VARIANT (TREE_TYPE (expr)));
684
685 expr = ffecom_modify (void_type_node, niters, expr);
686 expand_expr_stmt (expr);
687
688 expr = ffecom_modify (void_type_node, tvar, tstart);
689 expand_expr_stmt (expr);
690
691 ffeste_end_stmt_ ();
692
693 expanded_loop = expand_start_loop_continue_elsewhere (!! block);
694 if (block)
695 ffestw_set_do_hook (block, expanded_loop);
696
697 if (! ffe_is_onetrip ())
698 {
699 expr = ffecom_truth_value
700 (ffecom_2 (GE_EXPR, integer_type_node,
701 ffecom_2 (PREDECREMENT_EXPR,
702 TREE_TYPE (niters),
703 niters,
704 convert (TREE_TYPE (niters),
705 ffecom_integer_one_node)),
706 convert (TREE_TYPE (niters),
707 ffecom_integer_zero_node)));
708
709 expand_exit_loop_top_cond (0, expr);
710 }
711
712 if (block)
713 {
714 ffestw_set_do_tvar (block, tvar);
715 ffestw_set_do_incr_saved (block, tincr_saved);
716 ffestw_set_do_count_var (block, niters);
717 }
718 else
719 {
720 *xtvar = tvar;
721 *xtincr = tincr_saved;
722 *xitersvar = niters;
723 }
724 }
725
726 /* End an iterative DO loop. Pass the same iteration variable and increment
727 value trees that were generated in the paired _begin_ call. */
728
729 static void
730 ffeste_end_iterdo_ (ffestw block, tree tvar, tree tincr, tree itersvar)
731 {
732 tree expr;
733 tree niters = itersvar;
734
735 if (tvar == error_mark_node)
736 return;
737
738 expand_loop_continue_here ();
739
740 ffeste_start_stmt_ ();
741
742 if (ffe_is_onetrip ())
743 {
744 expr = ffecom_truth_value
745 (ffecom_2 (GE_EXPR, integer_type_node,
746 ffecom_2 (PREDECREMENT_EXPR,
747 TREE_TYPE (niters),
748 niters,
749 convert (TREE_TYPE (niters),
750 ffecom_integer_one_node)),
751 convert (TREE_TYPE (niters),
752 ffecom_integer_zero_node)));
753
754 expand_exit_loop_if_false (0, expr);
755 }
756
757 expr = ffecom_modify (void_type_node, tvar,
758 ffecom_2 (PLUS_EXPR, TREE_TYPE (tvar),
759 tvar,
760 tincr));
761 expand_expr_stmt (expr);
762
763 /* Lose the stuff we just built. */
764 ffeste_end_stmt_ ();
765
766 expand_end_loop ();
767
768 /* Lose the tvar and incr_saved trees. */
769 if (block)
770 ffeste_end_block_ (block);
771 else
772 ffeste_end_stmt_ ();
773 }
774
775 /* Generate call to run-time I/O routine. */
776
777 static void
778 ffeste_io_call_ (tree call, bool do_check)
779 {
780 /* Generate the call and optional assignment into iostat var. */
781
782 TREE_SIDE_EFFECTS (call) = 1;
783 if (ffeste_io_iostat_ != NULL_TREE)
784 call = ffecom_modify (do_check ? NULL_TREE : void_type_node,
785 ffeste_io_iostat_, call);
786 expand_expr_stmt (call);
787
788 if (! do_check
789 || ffeste_io_abort_ == NULL_TREE
790 || TREE_CODE (ffeste_io_abort_) == ERROR_MARK)
791 return;
792
793 /* Generate optional test. */
794
795 expand_start_cond (ffecom_truth_value (ffeste_io_iostat_), 0);
796 expand_goto (ffeste_io_abort_);
797 expand_end_cond ();
798 }
799
800 /* Handle implied-DO in I/O list.
801
802 Expands code to start up the DO loop. Then for each item in the
803 DO loop, handles appropriately (possibly including recursively calling
804 itself). Then expands code to end the DO loop. */
805
806 static void
807 ffeste_io_impdo_ (ffebld impdo, ffelexToken impdo_token)
808 {
809 ffebld var = ffebld_head (ffebld_right (impdo));
810 ffebld start = ffebld_head (ffebld_trail (ffebld_right (impdo)));
811 ffebld end = ffebld_head (ffebld_trail (ffebld_trail
812 (ffebld_right (impdo))));
813 ffebld incr = ffebld_head (ffebld_trail (ffebld_trail
814 (ffebld_trail (ffebld_right (impdo)))));
815 ffebld list;
816 ffebld item;
817 tree tvar;
818 tree tincr;
819 tree titervar;
820
821 if (incr == NULL)
822 {
823 incr = ffebld_new_conter (ffebld_constant_new_integerdefault_val (1));
824 ffebld_set_info (incr, ffeinfo_new
825 (FFEINFO_basictypeINTEGER,
826 FFEINFO_kindtypeINTEGERDEFAULT,
827 0,
828 FFEINFO_kindENTITY,
829 FFEINFO_whereCONSTANT,
830 FFETARGET_charactersizeNONE));
831 }
832
833 /* Start the DO loop. */
834
835 start = ffeexpr_convert_expr (start, impdo_token, var, impdo_token,
836 FFEEXPR_contextLET);
837 end = ffeexpr_convert_expr (end, impdo_token, var, impdo_token,
838 FFEEXPR_contextLET);
839 incr = ffeexpr_convert_expr (incr, impdo_token, var, impdo_token,
840 FFEEXPR_contextLET);
841
842 ffeste_begin_iterdo_ (NULL, &tvar, &tincr, &titervar, var,
843 start, impdo_token,
844 end, impdo_token,
845 incr, impdo_token,
846 "Implied DO loop");
847
848 /* Handle the list of items. */
849
850 for (list = ffebld_left (impdo); list != NULL; list = ffebld_trail (list))
851 {
852 item = ffebld_head (list);
853 if (item == NULL)
854 continue;
855
856 /* Strip parens off items such as in "READ *,(A)". This is really a bug
857 in the user's code, but I've been told lots of code does this. */
858 while (ffebld_op (item) == FFEBLD_opPAREN)
859 item = ffebld_left (item);
860
861 if (ffebld_op (item) == FFEBLD_opANY)
862 continue;
863
864 if (ffebld_op (item) == FFEBLD_opIMPDO)
865 ffeste_io_impdo_ (item, impdo_token);
866 else
867 {
868 ffeste_start_stmt_ ();
869
870 ffecom_prepare_arg_ptr_to_expr (item);
871
872 ffecom_prepare_end ();
873
874 ffeste_io_call_ ((*ffeste_io_driver_) (item), TRUE);
875
876 ffeste_end_stmt_ ();
877 }
878 }
879
880 /* Generate end of implied-do construct. */
881
882 ffeste_end_iterdo_ (NULL, tvar, tincr, titervar);
883 }
884
885 /* I/O driver for formatted I/O item (do_fio)
886
887 Returns a tree for a CALL_EXPR to the do_fio function, which handles
888 a formatted I/O list item, along with the appropriate arguments for
889 the function. It is up to the caller to set the TREE_SIDE_EFFECTS flag
890 for the CALL_EXPR, expand (emit) the expression, emit any assignment
891 of the result to an IOSTAT= variable, and emit any checking of the
892 result for errors. */
893
894 static tree
895 ffeste_io_dofio_ (ffebld expr)
896 {
897 tree num_elements;
898 tree variable;
899 tree size;
900 tree arglist;
901 ffeinfoBasictype bt;
902 ffeinfoKindtype kt;
903 bool is_complex;
904
905 bt = ffeinfo_basictype (ffebld_info (expr));
906 kt = ffeinfo_kindtype (ffebld_info (expr));
907
908 if ((bt == FFEINFO_basictypeANY)
909 || (kt == FFEINFO_kindtypeANY))
910 return error_mark_node;
911
912 if (bt == FFEINFO_basictypeCOMPLEX)
913 {
914 is_complex = TRUE;
915 bt = FFEINFO_basictypeREAL;
916 }
917 else
918 is_complex = FALSE;
919
920 variable = ffecom_arg_ptr_to_expr (expr, &size);
921
922 if ((variable == error_mark_node)
923 || (size == error_mark_node))
924 return error_mark_node;
925
926 if (size == NULL_TREE) /* Already filled in for CHARACTER type. */
927 { /* "(ftnlen) sizeof(type)" */
928 size = size_binop (CEIL_DIV_EXPR,
929 TYPE_SIZE_UNIT (ffecom_tree_type[bt][kt]),
930 size_int (TYPE_PRECISION (char_type_node)
931 / BITS_PER_UNIT));
932 #if 0 /* Assume that while it is possible that char * is wider than
933 ftnlen, no object in Fortran space can get big enough for its
934 size to be wider than ftnlen. I really hope nobody wastes
935 time debugging a case where it can! */
936 assert (TYPE_PRECISION (ffecom_f2c_ftnlen_type_node)
937 >= TYPE_PRECISION (TREE_TYPE (size)));
938 #endif
939 size = convert (ffecom_f2c_ftnlen_type_node, size);
940 }
941
942 if (ffeinfo_rank (ffebld_info (expr)) == 0
943 || TREE_CODE (TREE_TYPE (TREE_TYPE (variable))) != ARRAY_TYPE)
944 num_elements
945 = is_complex ? ffecom_f2c_ftnlen_two_node : ffecom_f2c_ftnlen_one_node;
946 else
947 {
948 num_elements
949 = size_binop (CEIL_DIV_EXPR,
950 TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (variable))),
951 convert (sizetype, size));
952 num_elements = size_binop (CEIL_DIV_EXPR, num_elements,
953 size_int (TYPE_PRECISION (char_type_node)
954 / BITS_PER_UNIT));
955 num_elements = convert (ffecom_f2c_ftnlen_type_node,
956 num_elements);
957 }
958
959 num_elements
960 = ffecom_1 (ADDR_EXPR, ffecom_f2c_ptr_to_ftnlen_type_node,
961 num_elements);
962
963 variable = convert (string_type_node, variable);
964
965 arglist = build_tree_list (NULL_TREE, num_elements);
966 TREE_CHAIN (arglist) = build_tree_list (NULL_TREE, variable);
967 TREE_CHAIN (TREE_CHAIN (arglist)) = build_tree_list (NULL_TREE, size);
968
969 return ffecom_call_gfrt (FFECOM_gfrtDOFIO, arglist, NULL_TREE);
970 }
971
972 /* I/O driver for list-directed I/O item (do_lio)
973
974 Returns a tree for a CALL_EXPR to the do_lio function, which handles
975 a list-directed I/O list item, along with the appropriate arguments for
976 the function. It is up to the caller to set the TREE_SIDE_EFFECTS flag
977 for the CALL_EXPR, expand (emit) the expression, emit any assignment
978 of the result to an IOSTAT= variable, and emit any checking of the
979 result for errors. */
980
981 static tree
982 ffeste_io_dolio_ (ffebld expr)
983 {
984 tree type_id;
985 tree num_elements;
986 tree variable;
987 tree size;
988 tree arglist;
989 ffeinfoBasictype bt;
990 ffeinfoKindtype kt;
991 int tc;
992
993 bt = ffeinfo_basictype (ffebld_info (expr));
994 kt = ffeinfo_kindtype (ffebld_info (expr));
995
996 if ((bt == FFEINFO_basictypeANY)
997 || (kt == FFEINFO_kindtypeANY))
998 return error_mark_node;
999
1000 tc = ffecom_f2c_typecode (bt, kt);
1001 assert (tc != -1);
1002 type_id = build_int_2 (tc, 0);
1003
1004 type_id
1005 = ffecom_1 (ADDR_EXPR, ffecom_f2c_ptr_to_ftnint_type_node,
1006 convert (ffecom_f2c_ftnint_type_node,
1007 type_id));
1008
1009 variable = ffecom_arg_ptr_to_expr (expr, &size);
1010
1011 if ((type_id == error_mark_node)
1012 || (variable == error_mark_node)
1013 || (size == error_mark_node))
1014 return error_mark_node;
1015
1016 if (size == NULL_TREE) /* Already filled in for CHARACTER type. */
1017 { /* "(ftnlen) sizeof(type)" */
1018 size = size_binop (CEIL_DIV_EXPR,
1019 TYPE_SIZE_UNIT (ffecom_tree_type[bt][kt]),
1020 size_int (TYPE_PRECISION (char_type_node)
1021 / BITS_PER_UNIT));
1022 #if 0 /* Assume that while it is possible that char * is wider than
1023 ftnlen, no object in Fortran space can get big enough for its
1024 size to be wider than ftnlen. I really hope nobody wastes
1025 time debugging a case where it can! */
1026 assert (TYPE_PRECISION (ffecom_f2c_ftnlen_type_node)
1027 >= TYPE_PRECISION (TREE_TYPE (size)));
1028 #endif
1029 size = convert (ffecom_f2c_ftnlen_type_node, size);
1030 }
1031
1032 if (ffeinfo_rank (ffebld_info (expr)) == 0
1033 || TREE_CODE (TREE_TYPE (TREE_TYPE (variable))) != ARRAY_TYPE)
1034 num_elements = ffecom_integer_one_node;
1035 else
1036 {
1037 num_elements
1038 = size_binop (CEIL_DIV_EXPR,
1039 TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (variable))),
1040 convert (sizetype, size));
1041 num_elements = size_binop (CEIL_DIV_EXPR, num_elements,
1042 size_int (TYPE_PRECISION (char_type_node)
1043 / BITS_PER_UNIT));
1044 num_elements = convert (ffecom_f2c_ftnlen_type_node,
1045 num_elements);
1046 }
1047
1048 num_elements
1049 = ffecom_1 (ADDR_EXPR, ffecom_f2c_ptr_to_ftnlen_type_node,
1050 num_elements);
1051
1052 variable = convert (string_type_node, variable);
1053
1054 arglist = build_tree_list (NULL_TREE, type_id);
1055 TREE_CHAIN (arglist) = build_tree_list (NULL_TREE, num_elements);
1056 TREE_CHAIN (TREE_CHAIN (arglist)) = build_tree_list (NULL_TREE, variable);
1057 TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (arglist)))
1058 = build_tree_list (NULL_TREE, size);
1059
1060 return ffecom_call_gfrt (FFECOM_gfrtDOLIO, arglist, NULL_TREE);
1061 }
1062
1063 /* I/O driver for unformatted I/O item (do_uio)
1064
1065 Returns a tree for a CALL_EXPR to the do_uio function, which handles
1066 an unformatted I/O list item, along with the appropriate arguments for
1067 the function. It is up to the caller to set the TREE_SIDE_EFFECTS flag
1068 for the CALL_EXPR, expand (emit) the expression, emit any assignment
1069 of the result to an IOSTAT= variable, and emit any checking of the
1070 result for errors. */
1071
1072 static tree
1073 ffeste_io_douio_ (ffebld expr)
1074 {
1075 tree num_elements;
1076 tree variable;
1077 tree size;
1078 tree arglist;
1079 ffeinfoBasictype bt;
1080 ffeinfoKindtype kt;
1081 bool is_complex;
1082
1083 bt = ffeinfo_basictype (ffebld_info (expr));
1084 kt = ffeinfo_kindtype (ffebld_info (expr));
1085
1086 if ((bt == FFEINFO_basictypeANY)
1087 || (kt == FFEINFO_kindtypeANY))
1088 return error_mark_node;
1089
1090 if (bt == FFEINFO_basictypeCOMPLEX)
1091 {
1092 is_complex = TRUE;
1093 bt = FFEINFO_basictypeREAL;
1094 }
1095 else
1096 is_complex = FALSE;
1097
1098 variable = ffecom_arg_ptr_to_expr (expr, &size);
1099
1100 if ((variable == error_mark_node)
1101 || (size == error_mark_node))
1102 return error_mark_node;
1103
1104 if (size == NULL_TREE) /* Already filled in for CHARACTER type. */
1105 { /* "(ftnlen) sizeof(type)" */
1106 size = size_binop (CEIL_DIV_EXPR,
1107 TYPE_SIZE_UNIT (ffecom_tree_type[bt][kt]),
1108 size_int (TYPE_PRECISION (char_type_node)
1109 / BITS_PER_UNIT));
1110 #if 0 /* Assume that while it is possible that char * is wider than
1111 ftnlen, no object in Fortran space can get big enough for its
1112 size to be wider than ftnlen. I really hope nobody wastes
1113 time debugging a case where it can! */
1114 assert (TYPE_PRECISION (ffecom_f2c_ftnlen_type_node)
1115 >= TYPE_PRECISION (TREE_TYPE (size)));
1116 #endif
1117 size = convert (ffecom_f2c_ftnlen_type_node, size);
1118 }
1119
1120 if (ffeinfo_rank (ffebld_info (expr)) == 0
1121 || TREE_CODE (TREE_TYPE (TREE_TYPE (variable))) != ARRAY_TYPE)
1122 num_elements
1123 = is_complex ? ffecom_f2c_ftnlen_two_node : ffecom_f2c_ftnlen_one_node;
1124 else
1125 {
1126 num_elements
1127 = size_binop (CEIL_DIV_EXPR,
1128 TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (variable))),
1129 convert (sizetype, size));
1130 num_elements = size_binop (CEIL_DIV_EXPR, num_elements,
1131 size_int (TYPE_PRECISION (char_type_node)
1132 / BITS_PER_UNIT));
1133 num_elements = convert (ffecom_f2c_ftnlen_type_node,
1134 num_elements);
1135 }
1136
1137 num_elements
1138 = ffecom_1 (ADDR_EXPR, ffecom_f2c_ptr_to_ftnlen_type_node,
1139 num_elements);
1140
1141 variable = convert (string_type_node, variable);
1142
1143 arglist = build_tree_list (NULL_TREE, num_elements);
1144 TREE_CHAIN (arglist) = build_tree_list (NULL_TREE, variable);
1145 TREE_CHAIN (TREE_CHAIN (arglist)) = build_tree_list (NULL_TREE, size);
1146
1147 return ffecom_call_gfrt (FFECOM_gfrtDOUIO, arglist, NULL_TREE);
1148 }
1149
1150 /* Make arglist with ptr to BACKSPACE/ENDFILE/REWIND control list.
1151
1152 Returns a tree suitable as an argument list containing a pointer to
1153 a BACKSPACE/ENDFILE/REWIND control list. First, generates that control
1154 list, if necessary, along with any static and run-time initializations
1155 that are needed as specified by the arguments to this function.
1156
1157 Must ensure that all expressions are prepared before being evaluated,
1158 for any whose evaluation might result in the generation of temporaries.
1159
1160 Note that this means this function causes a transition, within the
1161 current block being code-generated via the back end, from the
1162 declaration of variables (temporaries) to the expanding of expressions,
1163 statements, etc. */
1164
1165 static GTY(()) tree f2c_alist_struct;
1166 static tree
1167 ffeste_io_ialist_ (bool have_err,
1168 ffestvUnit unit,
1169 ffebld unit_expr,
1170 int unit_dflt)
1171 {
1172 tree t;
1173 tree ttype;
1174 tree field;
1175 tree inits, initn;
1176 bool constantp = TRUE;
1177 static tree errfield, unitfield;
1178 tree errinit, unitinit;
1179 tree unitexp;
1180 static int mynumber = 0;
1181
1182 if (f2c_alist_struct == NULL_TREE)
1183 {
1184 tree ref;
1185
1186 ref = make_node (RECORD_TYPE);
1187
1188 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
1189 ffecom_f2c_flag_type_node);
1190 unitfield = ffecom_decl_field (ref, errfield, "unit",
1191 ffecom_f2c_ftnint_type_node);
1192
1193 TYPE_FIELDS (ref) = errfield;
1194 layout_type (ref);
1195
1196 f2c_alist_struct = ref;
1197 }
1198
1199 /* Try to do as much compile-time initialization of the structure
1200 as possible, to save run time. */
1201
1202 ffeste_f2c_init_flag_ (have_err, errinit);
1203
1204 switch (unit)
1205 {
1206 case FFESTV_unitNONE:
1207 case FFESTV_unitASTERISK:
1208 unitinit = build_int_2 (unit_dflt, 0);
1209 unitexp = unitinit;
1210 break;
1211
1212 case FFESTV_unitINTEXPR:
1213 unitexp = ffecom_const_expr (unit_expr);
1214 if (unitexp)
1215 unitinit = unitexp;
1216 else
1217 {
1218 unitinit = ffecom_integer_zero_node;
1219 constantp = FALSE;
1220 }
1221 break;
1222
1223 default:
1224 assert ("bad unit spec" == NULL);
1225 unitinit = ffecom_integer_zero_node;
1226 unitexp = unitinit;
1227 break;
1228 }
1229
1230 inits = build_tree_list ((field = TYPE_FIELDS (f2c_alist_struct)), errinit);
1231 initn = inits;
1232 ffeste_f2c_init_next_ (unitinit);
1233
1234 inits = build_constructor (f2c_alist_struct, inits);
1235 TREE_CONSTANT (inits) = constantp ? 1 : 0;
1236 TREE_STATIC (inits) = 1;
1237
1238 t = build_decl (VAR_DECL,
1239 ffecom_get_invented_identifier ("__g77_alist_%d",
1240 mynumber++),
1241 f2c_alist_struct);
1242 TREE_STATIC (t) = 1;
1243 t = ffecom_start_decl (t, 1);
1244 ffecom_finish_decl (t, inits, 0);
1245
1246 /* Prepare run-time expressions. */
1247
1248 if (! unitexp)
1249 ffecom_prepare_expr (unit_expr);
1250
1251 ffecom_prepare_end ();
1252
1253 /* Now evaluate run-time expressions as needed. */
1254
1255 if (! unitexp)
1256 {
1257 unitexp = ffecom_expr (unit_expr);
1258 ffeste_f2c_compile_ (unitfield, unitexp);
1259 }
1260
1261 ttype = build_pointer_type (TREE_TYPE (t));
1262 t = ffecom_1 (ADDR_EXPR, ttype, t);
1263
1264 t = build_tree_list (NULL_TREE, t);
1265
1266 return t;
1267 }
1268
1269 /* Make arglist with ptr to external-I/O control list.
1270
1271 Returns a tree suitable as an argument list containing a pointer to
1272 an external-I/O control list. First, generates that control
1273 list, if necessary, along with any static and run-time initializations
1274 that are needed as specified by the arguments to this function.
1275
1276 Must ensure that all expressions are prepared before being evaluated,
1277 for any whose evaluation might result in the generation of temporaries.
1278
1279 Note that this means this function causes a transition, within the
1280 current block being code-generated via the back end, from the
1281 declaration of variables (temporaries) to the expanding of expressions,
1282 statements, etc. */
1283
1284 static GTY(()) tree f2c_cilist_struct;
1285 static tree
1286 ffeste_io_cilist_ (bool have_err,
1287 ffestvUnit unit,
1288 ffebld unit_expr,
1289 int unit_dflt,
1290 bool have_end,
1291 ffestvFormat format,
1292 ffestpFile *format_spec,
1293 bool rec,
1294 ffebld rec_expr)
1295 {
1296 tree t;
1297 tree ttype;
1298 tree field;
1299 tree inits, initn;
1300 bool constantp = TRUE;
1301 static tree errfield, unitfield, endfield, formatfield, recfield;
1302 tree errinit, unitinit, endinit, formatinit, recinit;
1303 tree unitexp, formatexp, recexp;
1304 static int mynumber = 0;
1305
1306 if (f2c_cilist_struct == NULL_TREE)
1307 {
1308 tree ref;
1309
1310 ref = make_node (RECORD_TYPE);
1311
1312 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
1313 ffecom_f2c_flag_type_node);
1314 unitfield = ffecom_decl_field (ref, errfield, "unit",
1315 ffecom_f2c_ftnint_type_node);
1316 endfield = ffecom_decl_field (ref, unitfield, "end",
1317 ffecom_f2c_flag_type_node);
1318 formatfield = ffecom_decl_field (ref, endfield, "format",
1319 string_type_node);
1320 recfield = ffecom_decl_field (ref, formatfield, "rec",
1321 ffecom_f2c_ftnint_type_node);
1322
1323 TYPE_FIELDS (ref) = errfield;
1324 layout_type (ref);
1325
1326 f2c_cilist_struct = ref;
1327 }
1328
1329 /* Try to do as much compile-time initialization of the structure
1330 as possible, to save run time. */
1331
1332 ffeste_f2c_init_flag_ (have_err, errinit);
1333
1334 switch (unit)
1335 {
1336 case FFESTV_unitNONE:
1337 case FFESTV_unitASTERISK:
1338 unitinit = build_int_2 (unit_dflt, 0);
1339 unitexp = unitinit;
1340 break;
1341
1342 case FFESTV_unitINTEXPR:
1343 unitexp = ffecom_const_expr (unit_expr);
1344 if (unitexp)
1345 unitinit = unitexp;
1346 else
1347 {
1348 unitinit = ffecom_integer_zero_node;
1349 constantp = FALSE;
1350 }
1351 break;
1352
1353 default:
1354 assert ("bad unit spec" == NULL);
1355 unitinit = ffecom_integer_zero_node;
1356 unitexp = unitinit;
1357 break;
1358 }
1359
1360 switch (format)
1361 {
1362 case FFESTV_formatNONE:
1363 formatinit = null_pointer_node;
1364 formatexp = formatinit;
1365 break;
1366
1367 case FFESTV_formatLABEL:
1368 formatexp = error_mark_node;
1369 formatinit = ffecom_lookup_label (format_spec->u.label);
1370 if ((formatinit == NULL_TREE)
1371 || (TREE_CODE (formatinit) == ERROR_MARK))
1372 break;
1373 formatinit = ffecom_1 (ADDR_EXPR,
1374 build_pointer_type (void_type_node),
1375 formatinit);
1376 TREE_CONSTANT (formatinit) = 1;
1377 break;
1378
1379 case FFESTV_formatCHAREXPR:
1380 formatexp = ffecom_arg_ptr_to_const_expr (format_spec->u.expr, NULL);
1381 if (formatexp)
1382 formatinit = formatexp;
1383 else
1384 {
1385 formatinit = null_pointer_node;
1386 constantp = FALSE;
1387 }
1388 break;
1389
1390 case FFESTV_formatASTERISK:
1391 formatinit = null_pointer_node;
1392 formatexp = formatinit;
1393 break;
1394
1395 case FFESTV_formatINTEXPR:
1396 formatinit = null_pointer_node;
1397 formatexp = ffecom_expr_assign (format_spec->u.expr);
1398 if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (formatexp)))
1399 < GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (null_pointer_node))))
1400 error ("ASSIGNed FORMAT specifier is too small");
1401 formatexp = convert (string_type_node, formatexp);
1402 break;
1403
1404 case FFESTV_formatNAMELIST:
1405 formatinit = ffecom_expr (format_spec->u.expr);
1406 formatexp = formatinit;
1407 break;
1408
1409 default:
1410 assert ("bad format spec" == NULL);
1411 formatinit = integer_zero_node;
1412 formatexp = formatinit;
1413 break;
1414 }
1415
1416 ffeste_f2c_init_flag_ (have_end, endinit);
1417
1418 if (rec)
1419 recexp = ffecom_const_expr (rec_expr);
1420 else
1421 recexp = ffecom_integer_zero_node;
1422 if (recexp)
1423 recinit = recexp;
1424 else
1425 {
1426 recinit = ffecom_integer_zero_node;
1427 constantp = FALSE;
1428 }
1429
1430 inits = build_tree_list ((field = TYPE_FIELDS (f2c_cilist_struct)), errinit);
1431 initn = inits;
1432 ffeste_f2c_init_next_ (unitinit);
1433 ffeste_f2c_init_next_ (endinit);
1434 ffeste_f2c_init_next_ (formatinit);
1435 ffeste_f2c_init_next_ (recinit);
1436
1437 inits = build_constructor (f2c_cilist_struct, inits);
1438 TREE_CONSTANT (inits) = constantp ? 1 : 0;
1439 TREE_STATIC (inits) = 1;
1440
1441 t = build_decl (VAR_DECL,
1442 ffecom_get_invented_identifier ("__g77_cilist_%d",
1443 mynumber++),
1444 f2c_cilist_struct);
1445 TREE_STATIC (t) = 1;
1446 t = ffecom_start_decl (t, 1);
1447 ffecom_finish_decl (t, inits, 0);
1448
1449 /* Prepare run-time expressions. */
1450
1451 if (! unitexp)
1452 ffecom_prepare_expr (unit_expr);
1453
1454 if (! formatexp)
1455 ffecom_prepare_arg_ptr_to_expr (format_spec->u.expr);
1456
1457 if (! recexp)
1458 ffecom_prepare_expr (rec_expr);
1459
1460 ffecom_prepare_end ();
1461
1462 /* Now evaluate run-time expressions as needed. */
1463
1464 if (! unitexp)
1465 {
1466 unitexp = ffecom_expr (unit_expr);
1467 ffeste_f2c_compile_ (unitfield, unitexp);
1468 }
1469
1470 if (! formatexp)
1471 {
1472 formatexp = ffecom_arg_ptr_to_expr (format_spec->u.expr, NULL);
1473 ffeste_f2c_compile_ (formatfield, formatexp);
1474 }
1475 else if (format == FFESTV_formatINTEXPR)
1476 ffeste_f2c_compile_ (formatfield, formatexp);
1477
1478 if (! recexp)
1479 {
1480 recexp = ffecom_expr (rec_expr);
1481 ffeste_f2c_compile_ (recfield, recexp);
1482 }
1483
1484 ttype = build_pointer_type (TREE_TYPE (t));
1485 t = ffecom_1 (ADDR_EXPR, ttype, t);
1486
1487 t = build_tree_list (NULL_TREE, t);
1488
1489 return t;
1490 }
1491
1492 /* Make arglist with ptr to CLOSE control list.
1493
1494 Returns a tree suitable as an argument list containing a pointer to
1495 a CLOSE-statement control list. First, generates that control
1496 list, if necessary, along with any static and run-time initializations
1497 that are needed as specified by the arguments to this function.
1498
1499 Must ensure that all expressions are prepared before being evaluated,
1500 for any whose evaluation might result in the generation of temporaries.
1501
1502 Note that this means this function causes a transition, within the
1503 current block being code-generated via the back end, from the
1504 declaration of variables (temporaries) to the expanding of expressions,
1505 statements, etc. */
1506
1507 static GTY(()) tree f2c_close_struct;
1508 static tree
1509 ffeste_io_cllist_ (bool have_err,
1510 ffebld unit_expr,
1511 ffestpFile *stat_spec)
1512 {
1513 tree t;
1514 tree ttype;
1515 tree field;
1516 tree inits, initn;
1517 tree ignore; /* Ignore length info for certain fields. */
1518 bool constantp = TRUE;
1519 static tree errfield, unitfield, statfield;
1520 tree errinit, unitinit, statinit;
1521 tree unitexp, statexp;
1522 static int mynumber = 0;
1523
1524 if (f2c_close_struct == NULL_TREE)
1525 {
1526 tree ref;
1527
1528 ref = make_node (RECORD_TYPE);
1529
1530 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
1531 ffecom_f2c_flag_type_node);
1532 unitfield = ffecom_decl_field (ref, errfield, "unit",
1533 ffecom_f2c_ftnint_type_node);
1534 statfield = ffecom_decl_field (ref, unitfield, "stat",
1535 string_type_node);
1536
1537 TYPE_FIELDS (ref) = errfield;
1538 layout_type (ref);
1539
1540 f2c_close_struct = ref;
1541 }
1542
1543 /* Try to do as much compile-time initialization of the structure
1544 as possible, to save run time. */
1545
1546 ffeste_f2c_init_flag_ (have_err, errinit);
1547
1548 unitexp = ffecom_const_expr (unit_expr);
1549 if (unitexp)
1550 unitinit = unitexp;
1551 else
1552 {
1553 unitinit = ffecom_integer_zero_node;
1554 constantp = FALSE;
1555 }
1556
1557 ffeste_f2c_init_charnolen_ (statexp, statinit, stat_spec);
1558
1559 inits = build_tree_list ((field = TYPE_FIELDS (f2c_close_struct)), errinit);
1560 initn = inits;
1561 ffeste_f2c_init_next_ (unitinit);
1562 ffeste_f2c_init_next_ (statinit);
1563
1564 inits = build_constructor (f2c_close_struct, inits);
1565 TREE_CONSTANT (inits) = constantp ? 1 : 0;
1566 TREE_STATIC (inits) = 1;
1567
1568 t = build_decl (VAR_DECL,
1569 ffecom_get_invented_identifier ("__g77_cllist_%d",
1570 mynumber++),
1571 f2c_close_struct);
1572 TREE_STATIC (t) = 1;
1573 t = ffecom_start_decl (t, 1);
1574 ffecom_finish_decl (t, inits, 0);
1575
1576 /* Prepare run-time expressions. */
1577
1578 if (! unitexp)
1579 ffecom_prepare_expr (unit_expr);
1580
1581 if (! statexp)
1582 ffecom_prepare_arg_ptr_to_expr (stat_spec->u.expr);
1583
1584 ffecom_prepare_end ();
1585
1586 /* Now evaluate run-time expressions as needed. */
1587
1588 if (! unitexp)
1589 {
1590 unitexp = ffecom_expr (unit_expr);
1591 ffeste_f2c_compile_ (unitfield, unitexp);
1592 }
1593
1594 ffeste_f2c_compile_charnolen_ (statfield, stat_spec, statexp);
1595
1596 ttype = build_pointer_type (TREE_TYPE (t));
1597 t = ffecom_1 (ADDR_EXPR, ttype, t);
1598
1599 t = build_tree_list (NULL_TREE, t);
1600
1601 return t;
1602 }
1603
1604 /* Make arglist with ptr to internal-I/O control list.
1605
1606 Returns a tree suitable as an argument list containing a pointer to
1607 an internal-I/O control list. First, generates that control
1608 list, if necessary, along with any static and run-time initializations
1609 that are needed as specified by the arguments to this function.
1610
1611 Must ensure that all expressions are prepared before being evaluated,
1612 for any whose evaluation might result in the generation of temporaries.
1613
1614 Note that this means this function causes a transition, within the
1615 current block being code-generated via the back end, from the
1616 declaration of variables (temporaries) to the expanding of expressions,
1617 statements, etc. */
1618
1619 static GTY(()) tree f2c_icilist_struct;
1620 static tree
1621 ffeste_io_icilist_ (bool have_err,
1622 ffebld unit_expr,
1623 bool have_end,
1624 ffestvFormat format,
1625 ffestpFile *format_spec)
1626 {
1627 tree t;
1628 tree ttype;
1629 tree field;
1630 tree inits, initn;
1631 bool constantp = TRUE;
1632 static tree errfield, unitfield, endfield, formatfield, unitlenfield,
1633 unitnumfield;
1634 tree errinit, unitinit, endinit, formatinit, unitleninit, unitnuminit;
1635 tree unitexp, formatexp, unitlenexp, unitnumexp;
1636 static int mynumber = 0;
1637
1638 if (f2c_icilist_struct == NULL_TREE)
1639 {
1640 tree ref;
1641
1642 ref = make_node (RECORD_TYPE);
1643
1644 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
1645 ffecom_f2c_flag_type_node);
1646 unitfield = ffecom_decl_field (ref, errfield, "unit",
1647 string_type_node);
1648 endfield = ffecom_decl_field (ref, unitfield, "end",
1649 ffecom_f2c_flag_type_node);
1650 formatfield = ffecom_decl_field (ref, endfield, "format",
1651 string_type_node);
1652 unitlenfield = ffecom_decl_field (ref, formatfield, "unitlen",
1653 ffecom_f2c_ftnint_type_node);
1654 unitnumfield = ffecom_decl_field (ref, unitlenfield, "unitnum",
1655 ffecom_f2c_ftnint_type_node);
1656
1657 TYPE_FIELDS (ref) = errfield;
1658 layout_type (ref);
1659
1660 f2c_icilist_struct = ref;
1661 }
1662
1663 /* Try to do as much compile-time initialization of the structure
1664 as possible, to save run time. */
1665
1666 ffeste_f2c_init_flag_ (have_err, errinit);
1667
1668 unitexp = ffecom_arg_ptr_to_const_expr (unit_expr, &unitlenexp);
1669 if (unitexp)
1670 unitinit = unitexp;
1671 else
1672 {
1673 unitinit = null_pointer_node;
1674 constantp = FALSE;
1675 }
1676 if (unitlenexp)
1677 unitleninit = unitlenexp;
1678 else
1679 {
1680 unitleninit = ffecom_integer_zero_node;
1681 constantp = FALSE;
1682 }
1683
1684 /* Now see if we can fully initialize the number of elements, or
1685 if we have to compute that at run time. */
1686 if (ffeinfo_rank (ffebld_info (unit_expr)) == 0
1687 || (unitexp
1688 && TREE_CODE (TREE_TYPE (TREE_TYPE (unitexp))) != ARRAY_TYPE))
1689 {
1690 /* Not an array, so just one element. */
1691 unitnuminit = ffecom_integer_one_node;
1692 unitnumexp = unitnuminit;
1693 }
1694 else if (unitexp && unitlenexp)
1695 {
1696 /* An array, but all the info is constant, so compute now. */
1697 unitnuminit
1698 = size_binop (CEIL_DIV_EXPR,
1699 TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (unitexp))),
1700 convert (sizetype, unitlenexp));
1701 unitnuminit = size_binop (CEIL_DIV_EXPR, unitnuminit,
1702 size_int (TYPE_PRECISION (char_type_node)
1703 / BITS_PER_UNIT));
1704 unitnumexp = unitnuminit;
1705 }
1706 else
1707 {
1708 /* Put off computing until run time. */
1709 unitnuminit = ffecom_integer_zero_node;
1710 unitnumexp = NULL_TREE;
1711 constantp = FALSE;
1712 }
1713
1714 switch (format)
1715 {
1716 case FFESTV_formatNONE:
1717 formatinit = null_pointer_node;
1718 formatexp = formatinit;
1719 break;
1720
1721 case FFESTV_formatLABEL:
1722 formatexp = error_mark_node;
1723 formatinit = ffecom_lookup_label (format_spec->u.label);
1724 if ((formatinit == NULL_TREE)
1725 || (TREE_CODE (formatinit) == ERROR_MARK))
1726 break;
1727 formatinit = ffecom_1 (ADDR_EXPR,
1728 build_pointer_type (void_type_node),
1729 formatinit);
1730 TREE_CONSTANT (formatinit) = 1;
1731 break;
1732
1733 case FFESTV_formatCHAREXPR:
1734 ffeste_f2c_init_format_ (formatexp, formatinit, format_spec);
1735 break;
1736
1737 case FFESTV_formatASTERISK:
1738 formatinit = null_pointer_node;
1739 formatexp = formatinit;
1740 break;
1741
1742 case FFESTV_formatINTEXPR:
1743 formatinit = null_pointer_node;
1744 formatexp = ffecom_expr_assign (format_spec->u.expr);
1745 if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (formatexp)))
1746 < GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (null_pointer_node))))
1747 error ("ASSIGNed FORMAT specifier is too small");
1748 formatexp = convert (string_type_node, formatexp);
1749 break;
1750
1751 default:
1752 assert ("bad format spec" == NULL);
1753 formatinit = ffecom_integer_zero_node;
1754 formatexp = formatinit;
1755 break;
1756 }
1757
1758 ffeste_f2c_init_flag_ (have_end, endinit);
1759
1760 inits = build_tree_list ((field = TYPE_FIELDS (f2c_icilist_struct)),
1761 errinit);
1762 initn = inits;
1763 ffeste_f2c_init_next_ (unitinit);
1764 ffeste_f2c_init_next_ (endinit);
1765 ffeste_f2c_init_next_ (formatinit);
1766 ffeste_f2c_init_next_ (unitleninit);
1767 ffeste_f2c_init_next_ (unitnuminit);
1768
1769 inits = build_constructor (f2c_icilist_struct, inits);
1770 TREE_CONSTANT (inits) = constantp ? 1 : 0;
1771 TREE_STATIC (inits) = 1;
1772
1773 t = build_decl (VAR_DECL,
1774 ffecom_get_invented_identifier ("__g77_icilist_%d",
1775 mynumber++),
1776 f2c_icilist_struct);
1777 TREE_STATIC (t) = 1;
1778 t = ffecom_start_decl (t, 1);
1779 ffecom_finish_decl (t, inits, 0);
1780
1781 /* Prepare run-time expressions. */
1782
1783 if (! unitexp)
1784 ffecom_prepare_arg_ptr_to_expr (unit_expr);
1785
1786 ffeste_f2c_prepare_format_ (format_spec, formatexp);
1787
1788 ffecom_prepare_end ();
1789
1790 /* Now evaluate run-time expressions as needed. */
1791
1792 if (! unitexp || ! unitlenexp)
1793 {
1794 int need_unitexp = (! unitexp);
1795 int need_unitlenexp = (! unitlenexp);
1796
1797 unitexp = ffecom_arg_ptr_to_expr (unit_expr, &unitlenexp);
1798 if (need_unitexp)
1799 ffeste_f2c_compile_ (unitfield, unitexp);
1800 if (need_unitlenexp)
1801 ffeste_f2c_compile_ (unitlenfield, unitlenexp);
1802 }
1803
1804 if (! unitnumexp
1805 && unitexp != error_mark_node
1806 && unitlenexp != error_mark_node)
1807 {
1808 unitnumexp
1809 = size_binop (CEIL_DIV_EXPR,
1810 TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (unitexp))),
1811 convert (sizetype, unitlenexp));
1812 unitnumexp = size_binop (CEIL_DIV_EXPR, unitnumexp,
1813 size_int (TYPE_PRECISION (char_type_node)
1814 / BITS_PER_UNIT));
1815 ffeste_f2c_compile_ (unitnumfield, unitnumexp);
1816 }
1817
1818 if (format == FFESTV_formatINTEXPR)
1819 ffeste_f2c_compile_ (formatfield, formatexp);
1820 else
1821 ffeste_f2c_compile_format_ (formatfield, format_spec, formatexp);
1822
1823 ttype = build_pointer_type (TREE_TYPE (t));
1824 t = ffecom_1 (ADDR_EXPR, ttype, t);
1825
1826 t = build_tree_list (NULL_TREE, t);
1827
1828 return t;
1829 }
1830
1831 /* Make arglist with ptr to INQUIRE control list
1832
1833 Returns a tree suitable as an argument list containing a pointer to
1834 an INQUIRE-statement control list. First, generates that control
1835 list, if necessary, along with any static and run-time initializations
1836 that are needed as specified by the arguments to this function.
1837
1838 Must ensure that all expressions are prepared before being evaluated,
1839 for any whose evaluation might result in the generation of temporaries.
1840
1841 Note that this means this function causes a transition, within the
1842 current block being code-generated via the back end, from the
1843 declaration of variables (temporaries) to the expanding of expressions,
1844 statements, etc. */
1845
1846 static GTY(()) tree f2c_inquire_struct;
1847 static tree
1848 ffeste_io_inlist_ (bool have_err,
1849 ffestpFile *unit_spec,
1850 ffestpFile *file_spec,
1851 ffestpFile *exist_spec,
1852 ffestpFile *open_spec,
1853 ffestpFile *number_spec,
1854 ffestpFile *named_spec,
1855 ffestpFile *name_spec,
1856 ffestpFile *access_spec,
1857 ffestpFile *sequential_spec,
1858 ffestpFile *direct_spec,
1859 ffestpFile *form_spec,
1860 ffestpFile *formatted_spec,
1861 ffestpFile *unformatted_spec,
1862 ffestpFile *recl_spec,
1863 ffestpFile *nextrec_spec,
1864 ffestpFile *blank_spec)
1865 {
1866 tree t;
1867 tree ttype;
1868 tree field;
1869 tree inits, initn;
1870 bool constantp = TRUE;
1871 static tree errfield, unitfield, filefield, filelenfield, existfield,
1872 openfield, numberfield, namedfield, namefield, namelenfield, accessfield,
1873 accesslenfield, sequentialfield, sequentiallenfield, directfield, directlenfield,
1874 formfield, formlenfield, formattedfield, formattedlenfield, unformattedfield,
1875 unformattedlenfield, reclfield, nextrecfield, blankfield, blanklenfield;
1876 tree errinit, unitinit, fileinit, fileleninit, existinit, openinit, numberinit,
1877 namedinit, nameinit, nameleninit, accessinit, accessleninit, sequentialinit,
1878 sequentialleninit, directinit, directleninit, forminit, formleninit,
1879 formattedinit, formattedleninit, unformattedinit, unformattedleninit,
1880 reclinit, nextrecinit, blankinit, blankleninit;
1881 tree
1882 unitexp, fileexp, filelenexp, existexp, openexp, numberexp, namedexp,
1883 nameexp, namelenexp, accessexp, accesslenexp, sequentialexp, sequentiallenexp,
1884 directexp, directlenexp, formexp, formlenexp, formattedexp, formattedlenexp,
1885 unformattedexp, unformattedlenexp, reclexp, nextrecexp, blankexp, blanklenexp;
1886 static int mynumber = 0;
1887
1888 if (f2c_inquire_struct == NULL_TREE)
1889 {
1890 tree ref;
1891
1892 ref = make_node (RECORD_TYPE);
1893
1894 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
1895 ffecom_f2c_flag_type_node);
1896 unitfield = ffecom_decl_field (ref, errfield, "unit",
1897 ffecom_f2c_ftnint_type_node);
1898 filefield = ffecom_decl_field (ref, unitfield, "file",
1899 string_type_node);
1900 filelenfield = ffecom_decl_field (ref, filefield, "filelen",
1901 ffecom_f2c_ftnlen_type_node);
1902 existfield = ffecom_decl_field (ref, filelenfield, "exist",
1903 ffecom_f2c_ptr_to_ftnint_type_node);
1904 openfield = ffecom_decl_field (ref, existfield, "open",
1905 ffecom_f2c_ptr_to_ftnint_type_node);
1906 numberfield = ffecom_decl_field (ref, openfield, "number",
1907 ffecom_f2c_ptr_to_ftnint_type_node);
1908 namedfield = ffecom_decl_field (ref, numberfield, "named",
1909 ffecom_f2c_ptr_to_ftnint_type_node);
1910 namefield = ffecom_decl_field (ref, namedfield, "name",
1911 string_type_node);
1912 namelenfield = ffecom_decl_field (ref, namefield, "namelen",
1913 ffecom_f2c_ftnlen_type_node);
1914 accessfield = ffecom_decl_field (ref, namelenfield, "access",
1915 string_type_node);
1916 accesslenfield = ffecom_decl_field (ref, accessfield, "accesslen",
1917 ffecom_f2c_ftnlen_type_node);
1918 sequentialfield = ffecom_decl_field (ref, accesslenfield, "sequential",
1919 string_type_node);
1920 sequentiallenfield = ffecom_decl_field (ref, sequentialfield,
1921 "sequentiallen",
1922 ffecom_f2c_ftnlen_type_node);
1923 directfield = ffecom_decl_field (ref, sequentiallenfield, "direct",
1924 string_type_node);
1925 directlenfield = ffecom_decl_field (ref, directfield, "directlen",
1926 ffecom_f2c_ftnlen_type_node);
1927 formfield = ffecom_decl_field (ref, directlenfield, "form",
1928 string_type_node);
1929 formlenfield = ffecom_decl_field (ref, formfield, "formlen",
1930 ffecom_f2c_ftnlen_type_node);
1931 formattedfield = ffecom_decl_field (ref, formlenfield, "formatted",
1932 string_type_node);
1933 formattedlenfield = ffecom_decl_field (ref, formattedfield,
1934 "formattedlen",
1935 ffecom_f2c_ftnlen_type_node);
1936 unformattedfield = ffecom_decl_field (ref, formattedlenfield,
1937 "unformatted",
1938 string_type_node);
1939 unformattedlenfield = ffecom_decl_field (ref, unformattedfield,
1940 "unformattedlen",
1941 ffecom_f2c_ftnlen_type_node);
1942 reclfield = ffecom_decl_field (ref, unformattedlenfield, "recl",
1943 ffecom_f2c_ptr_to_ftnint_type_node);
1944 nextrecfield = ffecom_decl_field (ref, reclfield, "nextrec",
1945 ffecom_f2c_ptr_to_ftnint_type_node);
1946 blankfield = ffecom_decl_field (ref, nextrecfield, "blank",
1947 string_type_node);
1948 blanklenfield = ffecom_decl_field (ref, blankfield, "blanklen",
1949 ffecom_f2c_ftnlen_type_node);
1950
1951 TYPE_FIELDS (ref) = errfield;
1952 layout_type (ref);
1953
1954 f2c_inquire_struct = ref;
1955 }
1956
1957 /* Try to do as much compile-time initialization of the structure
1958 as possible, to save run time. */
1959
1960 ffeste_f2c_init_flag_ (have_err, errinit);
1961 ffeste_f2c_init_int_ (unitexp, unitinit, unit_spec);
1962 ffeste_f2c_init_char_ (fileexp, fileinit, filelenexp, fileleninit,
1963 file_spec);
1964 ffeste_f2c_init_ptrtoint_ (existexp, existinit, exist_spec);
1965 ffeste_f2c_init_ptrtoint_ (openexp, openinit, open_spec);
1966 ffeste_f2c_init_ptrtoint_ (numberexp, numberinit, number_spec);
1967 ffeste_f2c_init_ptrtoint_ (namedexp, namedinit, named_spec);
1968 ffeste_f2c_init_char_ (nameexp, nameinit, namelenexp, nameleninit,
1969 name_spec);
1970 ffeste_f2c_init_char_ (accessexp, accessinit, accesslenexp,
1971 accessleninit, access_spec);
1972 ffeste_f2c_init_char_ (sequentialexp, sequentialinit, sequentiallenexp,
1973 sequentialleninit, sequential_spec);
1974 ffeste_f2c_init_char_ (directexp, directinit, directlenexp,
1975 directleninit, direct_spec);
1976 ffeste_f2c_init_char_ (formexp, forminit, formlenexp, formleninit,
1977 form_spec);
1978 ffeste_f2c_init_char_ (formattedexp, formattedinit,
1979 formattedlenexp, formattedleninit, formatted_spec);
1980 ffeste_f2c_init_char_ (unformattedexp, unformattedinit, unformattedlenexp,
1981 unformattedleninit, unformatted_spec);
1982 ffeste_f2c_init_ptrtoint_ (reclexp, reclinit, recl_spec);
1983 ffeste_f2c_init_ptrtoint_ (nextrecexp, nextrecinit, nextrec_spec);
1984 ffeste_f2c_init_char_ (blankexp, blankinit, blanklenexp,
1985 blankleninit, blank_spec);
1986
1987 inits = build_tree_list ((field = TYPE_FIELDS (f2c_inquire_struct)),
1988 errinit);
1989 initn = inits;
1990 ffeste_f2c_init_next_ (unitinit);
1991 ffeste_f2c_init_next_ (fileinit);
1992 ffeste_f2c_init_next_ (fileleninit);
1993 ffeste_f2c_init_next_ (existinit);
1994 ffeste_f2c_init_next_ (openinit);
1995 ffeste_f2c_init_next_ (numberinit);
1996 ffeste_f2c_init_next_ (namedinit);
1997 ffeste_f2c_init_next_ (nameinit);
1998 ffeste_f2c_init_next_ (nameleninit);
1999 ffeste_f2c_init_next_ (accessinit);
2000 ffeste_f2c_init_next_ (accessleninit);
2001 ffeste_f2c_init_next_ (sequentialinit);
2002 ffeste_f2c_init_next_ (sequentialleninit);
2003 ffeste_f2c_init_next_ (directinit);
2004 ffeste_f2c_init_next_ (directleninit);
2005 ffeste_f2c_init_next_ (forminit);
2006 ffeste_f2c_init_next_ (formleninit);
2007 ffeste_f2c_init_next_ (formattedinit);
2008 ffeste_f2c_init_next_ (formattedleninit);
2009 ffeste_f2c_init_next_ (unformattedinit);
2010 ffeste_f2c_init_next_ (unformattedleninit);
2011 ffeste_f2c_init_next_ (reclinit);
2012 ffeste_f2c_init_next_ (nextrecinit);
2013 ffeste_f2c_init_next_ (blankinit);
2014 ffeste_f2c_init_next_ (blankleninit);
2015
2016 inits = build_constructor (f2c_inquire_struct, inits);
2017 TREE_CONSTANT (inits) = constantp ? 1 : 0;
2018 TREE_STATIC (inits) = 1;
2019
2020 t = build_decl (VAR_DECL,
2021 ffecom_get_invented_identifier ("__g77_inlist_%d",
2022 mynumber++),
2023 f2c_inquire_struct);
2024 TREE_STATIC (t) = 1;
2025 t = ffecom_start_decl (t, 1);
2026 ffecom_finish_decl (t, inits, 0);
2027
2028 /* Prepare run-time expressions. */
2029
2030 ffeste_f2c_prepare_int_ (unit_spec, unitexp);
2031 ffeste_f2c_prepare_char_ (file_spec, fileexp);
2032 ffeste_f2c_prepare_ptrtoint_ (exist_spec, existexp);
2033 ffeste_f2c_prepare_ptrtoint_ (open_spec, openexp);
2034 ffeste_f2c_prepare_ptrtoint_ (number_spec, numberexp);
2035 ffeste_f2c_prepare_ptrtoint_ (named_spec, namedexp);
2036 ffeste_f2c_prepare_char_ (name_spec, nameexp);
2037 ffeste_f2c_prepare_char_ (access_spec, accessexp);
2038 ffeste_f2c_prepare_char_ (sequential_spec, sequentialexp);
2039 ffeste_f2c_prepare_char_ (direct_spec, directexp);
2040 ffeste_f2c_prepare_char_ (form_spec, formexp);
2041 ffeste_f2c_prepare_char_ (formatted_spec, formattedexp);
2042 ffeste_f2c_prepare_char_ (unformatted_spec, unformattedexp);
2043 ffeste_f2c_prepare_ptrtoint_ (recl_spec, reclexp);
2044 ffeste_f2c_prepare_ptrtoint_ (nextrec_spec, nextrecexp);
2045 ffeste_f2c_prepare_char_ (blank_spec, blankexp);
2046
2047 ffecom_prepare_end ();
2048
2049 /* Now evaluate run-time expressions as needed. */
2050
2051 ffeste_f2c_compile_int_ (unitfield, unit_spec, unitexp);
2052 ffeste_f2c_compile_char_ (filefield, filelenfield, file_spec,
2053 fileexp, filelenexp);
2054 ffeste_f2c_compile_ptrtoint_ (existfield, exist_spec, existexp);
2055 ffeste_f2c_compile_ptrtoint_ (openfield, open_spec, openexp);
2056 ffeste_f2c_compile_ptrtoint_ (numberfield, number_spec, numberexp);
2057 ffeste_f2c_compile_ptrtoint_ (namedfield, named_spec, namedexp);
2058 ffeste_f2c_compile_char_ (namefield, namelenfield, name_spec, nameexp,
2059 namelenexp);
2060 ffeste_f2c_compile_char_ (accessfield, accesslenfield, access_spec,
2061 accessexp, accesslenexp);
2062 ffeste_f2c_compile_char_ (sequentialfield, sequentiallenfield,
2063 sequential_spec, sequentialexp,
2064 sequentiallenexp);
2065 ffeste_f2c_compile_char_ (directfield, directlenfield, direct_spec,
2066 directexp, directlenexp);
2067 ffeste_f2c_compile_char_ (formfield, formlenfield, form_spec, formexp,
2068 formlenexp);
2069 ffeste_f2c_compile_char_ (formattedfield, formattedlenfield, formatted_spec,
2070 formattedexp, formattedlenexp);
2071 ffeste_f2c_compile_char_ (unformattedfield, unformattedlenfield,
2072 unformatted_spec, unformattedexp,
2073 unformattedlenexp);
2074 ffeste_f2c_compile_ptrtoint_ (reclfield, recl_spec, reclexp);
2075 ffeste_f2c_compile_ptrtoint_ (nextrecfield, nextrec_spec, nextrecexp);
2076 ffeste_f2c_compile_char_ (blankfield, blanklenfield, blank_spec, blankexp,
2077 blanklenexp);
2078
2079 ttype = build_pointer_type (TREE_TYPE (t));
2080 t = ffecom_1 (ADDR_EXPR, ttype, t);
2081
2082 t = build_tree_list (NULL_TREE, t);
2083
2084 return t;
2085 }
2086
2087 /* Make arglist with ptr to OPEN control list
2088
2089 Returns a tree suitable as an argument list containing a pointer to
2090 an OPEN-statement control list. First, generates that control
2091 list, if necessary, along with any static and run-time initializations
2092 that are needed as specified by the arguments to this function.
2093
2094 Must ensure that all expressions are prepared before being evaluated,
2095 for any whose evaluation might result in the generation of temporaries.
2096
2097 Note that this means this function causes a transition, within the
2098 current block being code-generated via the back end, from the
2099 declaration of variables (temporaries) to the expanding of expressions,
2100 statements, etc. */
2101
2102 static GTY(()) tree f2c_open_struct;
2103 static tree
2104 ffeste_io_olist_ (bool have_err,
2105 ffebld unit_expr,
2106 ffestpFile *file_spec,
2107 ffestpFile *stat_spec,
2108 ffestpFile *access_spec,
2109 ffestpFile *form_spec,
2110 ffestpFile *recl_spec,
2111 ffestpFile *blank_spec)
2112 {
2113 tree t;
2114 tree ttype;
2115 tree field;
2116 tree inits, initn;
2117 tree ignore; /* Ignore length info for certain fields. */
2118 bool constantp = TRUE;
2119 static tree errfield, unitfield, filefield, filelenfield, statfield,
2120 accessfield, formfield, reclfield, blankfield;
2121 tree errinit, unitinit, fileinit, fileleninit, statinit, accessinit,
2122 forminit, reclinit, blankinit;
2123 tree
2124 unitexp, fileexp, filelenexp, statexp, accessexp, formexp, reclexp,
2125 blankexp;
2126 static int mynumber = 0;
2127
2128 if (f2c_open_struct == NULL_TREE)
2129 {
2130 tree ref;
2131
2132 ref = make_node (RECORD_TYPE);
2133
2134 errfield = ffecom_decl_field (ref, NULL_TREE, "err",
2135 ffecom_f2c_flag_type_node);
2136 unitfield = ffecom_decl_field (ref, errfield, "unit",
2137 ffecom_f2c_ftnint_type_node);
2138 filefield = ffecom_decl_field (ref, unitfield, "file",
2139 string_type_node);
2140 filelenfield = ffecom_decl_field (ref, filefield, "filelen",
2141 ffecom_f2c_ftnlen_type_node);
2142 statfield = ffecom_decl_field (ref, filelenfield, "stat",
2143 string_type_node);
2144 accessfield = ffecom_decl_field (ref, statfield, "access",
2145 string_type_node);
2146 formfield = ffecom_decl_field (ref, accessfield, "form",
2147 string_type_node);
2148 reclfield = ffecom_decl_field (ref, formfield, "recl",
2149 ffecom_f2c_ftnint_type_node);
2150 blankfield = ffecom_decl_field (ref, reclfield, "blank",
2151 string_type_node);
2152
2153 TYPE_FIELDS (ref) = errfield;
2154 layout_type (ref);
2155
2156 f2c_open_struct = ref;
2157 }
2158
2159 /* Try to do as much compile-time initialization of the structure
2160 as possible, to save run time. */
2161
2162 ffeste_f2c_init_flag_ (have_err, errinit);
2163
2164 unitexp = ffecom_const_expr (unit_expr);
2165 if (unitexp)
2166 unitinit = unitexp;
2167 else
2168 {
2169 unitinit = ffecom_integer_zero_node;
2170 constantp = FALSE;
2171 }
2172
2173 ffeste_f2c_init_char_ (fileexp, fileinit, filelenexp, fileleninit,
2174 file_spec);
2175 ffeste_f2c_init_charnolen_ (statexp, statinit, stat_spec);
2176 ffeste_f2c_init_charnolen_ (accessexp, accessinit, access_spec);
2177 ffeste_f2c_init_charnolen_ (formexp, forminit, form_spec);
2178 ffeste_f2c_init_int_ (reclexp, reclinit, recl_spec);
2179 ffeste_f2c_init_charnolen_ (blankexp, blankinit, blank_spec);
2180
2181 inits = build_tree_list ((field = TYPE_FIELDS (f2c_open_struct)), errinit);
2182 initn = inits;
2183 ffeste_f2c_init_next_ (unitinit);
2184 ffeste_f2c_init_next_ (fileinit);
2185 ffeste_f2c_init_next_ (fileleninit);
2186 ffeste_f2c_init_next_ (statinit);
2187 ffeste_f2c_init_next_ (accessinit);
2188 ffeste_f2c_init_next_ (forminit);
2189 ffeste_f2c_init_next_ (reclinit);
2190 ffeste_f2c_init_next_ (blankinit);
2191
2192 inits = build_constructor (f2c_open_struct, inits);
2193 TREE_CONSTANT (inits) = constantp ? 1 : 0;
2194 TREE_STATIC (inits) = 1;
2195
2196 t = build_decl (VAR_DECL,
2197 ffecom_get_invented_identifier ("__g77_olist_%d",
2198 mynumber++),
2199 f2c_open_struct);
2200 TREE_STATIC (t) = 1;
2201 t = ffecom_start_decl (t, 1);
2202 ffecom_finish_decl (t, inits, 0);
2203
2204 /* Prepare run-time expressions. */
2205
2206 if (! unitexp)
2207 ffecom_prepare_expr (unit_expr);
2208
2209 ffeste_f2c_prepare_char_ (file_spec, fileexp);
2210 ffeste_f2c_prepare_charnolen_ (stat_spec, statexp);
2211 ffeste_f2c_prepare_charnolen_ (access_spec, accessexp);
2212 ffeste_f2c_prepare_charnolen_ (form_spec, formexp);
2213 ffeste_f2c_prepare_int_ (recl_spec, reclexp);
2214 ffeste_f2c_prepare_charnolen_ (blank_spec, blankexp);
2215
2216 ffecom_prepare_end ();
2217
2218 /* Now evaluate run-time expressions as needed. */
2219
2220 if (! unitexp)
2221 {
2222 unitexp = ffecom_expr (unit_expr);
2223 ffeste_f2c_compile_ (unitfield, unitexp);
2224 }
2225
2226 ffeste_f2c_compile_char_ (filefield, filelenfield, file_spec, fileexp,
2227 filelenexp);
2228 ffeste_f2c_compile_charnolen_ (statfield, stat_spec, statexp);
2229 ffeste_f2c_compile_charnolen_ (accessfield, access_spec, accessexp);
2230 ffeste_f2c_compile_charnolen_ (formfield, form_spec, formexp);
2231 ffeste_f2c_compile_int_ (reclfield, recl_spec, reclexp);
2232 ffeste_f2c_compile_charnolen_ (blankfield, blank_spec, blankexp);
2233
2234 ttype = build_pointer_type (TREE_TYPE (t));
2235 t = ffecom_1 (ADDR_EXPR, ttype, t);
2236
2237 t = build_tree_list (NULL_TREE, t);
2238
2239 return t;
2240 }
2241
2242 /* Generate code for BACKSPACE/ENDFILE/REWIND. */
2243
2244 static void
2245 ffeste_subr_beru_ (ffestpBeruStmt *info, ffecomGfrt rt)
2246 {
2247 tree alist;
2248 bool iostat;
2249 bool errl;
2250
2251 ffeste_emit_line_note_ ();
2252
2253 #define specified(something) (info->beru_spec[something].kw_or_val_present)
2254
2255 iostat = specified (FFESTP_beruixIOSTAT);
2256 errl = specified (FFESTP_beruixERR);
2257
2258 #undef specified
2259
2260 /* ~~For now, we assume the unit number is specified and is not ASTERISK,
2261 because the FFE doesn't support BACKSPACE(*) and rejects a BACKSPACE
2262 without any unit specifier. f2c, however, supports the former
2263 construct. When it is time to add this feature to the FFE, which
2264 probably is fairly easy, ffestc_R919 and company will want to pass an
2265 ffestvUnit indicator of FFESTV_unitINTEXPR or _unitASTERISK to
2266 ffeste_R919 and company, and they will want to pass that same value to
2267 this function, and that argument will replace the constant _unitINTEXPR_
2268 in the call below. Right now, the default unit number, 6, is ignored. */
2269
2270 ffeste_start_stmt_ ();
2271
2272 if (errl)
2273 {
2274 /* Have ERR= specification. */
2275
2276 ffeste_io_err_
2277 = ffeste_io_abort_
2278 = ffecom_lookup_label
2279 (info->beru_spec[FFESTP_beruixERR].u.label);
2280 ffeste_io_abort_is_temp_ = FALSE;
2281 }
2282 else
2283 {
2284 /* No ERR= specification. */
2285
2286 ffeste_io_err_ = NULL_TREE;
2287
2288 if ((ffeste_io_abort_is_temp_ = iostat))
2289 ffeste_io_abort_ = ffecom_temp_label ();
2290 else
2291 ffeste_io_abort_ = NULL_TREE;
2292 }
2293
2294 if (iostat)
2295 {
2296 /* Have IOSTAT= specification. */
2297
2298 ffeste_io_iostat_is_temp_ = FALSE;
2299 ffeste_io_iostat_ = ffecom_expr
2300 (info->beru_spec[FFESTP_beruixIOSTAT].u.expr);
2301 }
2302 else if (ffeste_io_abort_ != NULL_TREE)
2303 {
2304 /* Have no IOSTAT= but have ERR=. */
2305
2306 ffeste_io_iostat_is_temp_ = TRUE;
2307 ffeste_io_iostat_
2308 = ffecom_make_tempvar ("beru", ffecom_integer_type_node,
2309 FFETARGET_charactersizeNONE, -1);
2310 }
2311 else
2312 {
2313 /* No IOSTAT= or ERR= specification. */
2314
2315 ffeste_io_iostat_is_temp_ = FALSE;
2316 ffeste_io_iostat_ = NULL_TREE;
2317 }
2318
2319 /* Now prescan, then convert, all the arguments. */
2320
2321 alist = ffeste_io_ialist_ (errl || iostat, FFESTV_unitINTEXPR,
2322 info->beru_spec[FFESTP_beruixUNIT].u.expr, 6);
2323
2324 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
2325 label, since we're gonna fall through to there anyway. */
2326
2327 ffeste_io_call_ (ffecom_call_gfrt (rt, alist, NULL_TREE),
2328 ! ffeste_io_abort_is_temp_);
2329
2330 /* If we've got a temp label, generate its code here. */
2331
2332 if (ffeste_io_abort_is_temp_)
2333 {
2334 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
2335 emit_nop ();
2336 expand_label (ffeste_io_abort_);
2337
2338 assert (ffeste_io_err_ == NULL_TREE);
2339 }
2340
2341 ffeste_end_stmt_ ();
2342 }
2343
2344 /* END DO statement
2345
2346 Also invoked by _labeldef_branch_finish_ (or, in cases
2347 of errors, other _labeldef_ functions) when the label definition is
2348 for a DO-target (LOOPEND) label, once per matching/outstanding DO
2349 block on the stack. */
2350
2351 void
2352 ffeste_do (ffestw block)
2353 {
2354 ffeste_emit_line_note_ ();
2355
2356 if (ffestw_do_tvar (block) == 0)
2357 {
2358 expand_end_loop (); /* DO WHILE and just DO. */
2359
2360 ffeste_end_block_ (block);
2361 }
2362 else
2363 ffeste_end_iterdo_ (block,
2364 ffestw_do_tvar (block),
2365 ffestw_do_incr_saved (block),
2366 ffestw_do_count_var (block));
2367 }
2368
2369 /* End of statement following logical IF.
2370
2371 Applies to *only* logical IF, not to IF-THEN. */
2372
2373 void
2374 ffeste_end_R807 ()
2375 {
2376 ffeste_emit_line_note_ ();
2377
2378 expand_end_cond ();
2379
2380 ffeste_end_block_ (NULL);
2381 }
2382
2383 /* Generate "code" for branch label definition. */
2384
2385 void
2386 ffeste_labeldef_branch (ffelab label)
2387 {
2388 tree glabel;
2389
2390 glabel = ffecom_lookup_label (label);
2391 assert (glabel != NULL_TREE);
2392 if (TREE_CODE (glabel) == ERROR_MARK)
2393 return;
2394
2395 assert (DECL_INITIAL (glabel) == NULL_TREE);
2396
2397 DECL_INITIAL (glabel) = error_mark_node;
2398 DECL_SOURCE_FILE (glabel) = ffelab_definition_filename (label);
2399 DECL_SOURCE_LINE (glabel) = ffelab_definition_filelinenum (label);
2400
2401 emit_nop ();
2402
2403 expand_label (glabel);
2404 }
2405
2406 /* Generate "code" for FORMAT label definition. */
2407
2408 void
2409 ffeste_labeldef_format (ffelab label)
2410 {
2411 ffeste_label_formatdef_ = label;
2412 }
2413
2414 /* Assignment statement (outside of WHERE). */
2415
2416 void
2417 ffeste_R737A (ffebld dest, ffebld source)
2418 {
2419 ffeste_check_simple_ ();
2420
2421 ffeste_emit_line_note_ ();
2422
2423 ffeste_start_stmt_ ();
2424
2425 ffecom_expand_let_stmt (dest, source);
2426
2427 ffeste_end_stmt_ ();
2428 }
2429
2430 /* Block IF (IF-THEN) statement. */
2431
2432 void
2433 ffeste_R803 (ffestw block, ffebld expr)
2434 {
2435 tree temp;
2436
2437 ffeste_check_simple_ ();
2438
2439 ffeste_emit_line_note_ ();
2440
2441 ffeste_start_block_ (block);
2442
2443 temp = ffecom_make_tempvar ("ifthen", integer_type_node,
2444 FFETARGET_charactersizeNONE, -1);
2445
2446 ffeste_start_stmt_ ();
2447
2448 ffecom_prepare_expr (expr);
2449
2450 if (ffecom_prepare_end ())
2451 {
2452 tree result;
2453
2454 result = ffecom_modify (void_type_node,
2455 temp,
2456 ffecom_truth_value (ffecom_expr (expr)));
2457
2458 expand_expr_stmt (result);
2459
2460 ffeste_end_stmt_ ();
2461 }
2462 else
2463 {
2464 ffeste_end_stmt_ ();
2465
2466 temp = ffecom_truth_value (ffecom_expr (expr));
2467 }
2468
2469 expand_start_cond (temp, 0);
2470
2471 /* No fake `else' constructs introduced (yet). */
2472 ffestw_set_ifthen_fake_else (block, 0);
2473 }
2474
2475 /* ELSE IF statement. */
2476
2477 void
2478 ffeste_R804 (ffestw block, ffebld expr)
2479 {
2480 tree temp;
2481
2482 ffeste_check_simple_ ();
2483
2484 ffeste_emit_line_note_ ();
2485
2486 /* Since ELSEIF(expr) might require preparations for expr,
2487 implement as ELSE; prepare-expr; IF (expr) THEN ...; ENDIF. */
2488
2489 expand_start_else ();
2490
2491 ffeste_start_block_ (block);
2492
2493 temp = ffecom_make_tempvar ("elseif", integer_type_node,
2494 FFETARGET_charactersizeNONE, -1);
2495
2496 ffeste_start_stmt_ ();
2497
2498 ffecom_prepare_expr (expr);
2499
2500 if (ffecom_prepare_end ())
2501 {
2502 tree result;
2503
2504 result = ffecom_modify (void_type_node,
2505 temp,
2506 ffecom_truth_value (ffecom_expr (expr)));
2507
2508 expand_expr_stmt (result);
2509
2510 ffeste_end_stmt_ ();
2511 }
2512 else
2513 {
2514 /* In this case, we could probably have used expand_start_elseif
2515 instead, saving the need for a fake `else' construct. But,
2516 until it's clear that'd improve performance, it's easier this
2517 way, since we have to expand_start_else before we get to this
2518 test, given the current design. */
2519
2520 ffeste_end_stmt_ ();
2521
2522 temp = ffecom_truth_value (ffecom_expr (expr));
2523 }
2524
2525 expand_start_cond (temp, 0);
2526
2527 /* Increment number of fake `else' constructs introduced. */
2528 ffestw_set_ifthen_fake_else (block,
2529 ffestw_ifthen_fake_else (block) + 1);
2530 }
2531
2532 /* ELSE statement. */
2533
2534 void
2535 ffeste_R805 (ffestw block UNUSED)
2536 {
2537 ffeste_check_simple_ ();
2538
2539 ffeste_emit_line_note_ ();
2540
2541 expand_start_else ();
2542 }
2543
2544 /* END IF statement. */
2545
2546 void
2547 ffeste_R806 (ffestw block)
2548 {
2549 int i = ffestw_ifthen_fake_else (block) + 1;
2550
2551 ffeste_emit_line_note_ ();
2552
2553 for (; i; --i)
2554 {
2555 expand_end_cond ();
2556
2557 ffeste_end_block_ (block);
2558 }
2559 }
2560
2561 /* Logical IF statement. */
2562
2563 void
2564 ffeste_R807 (ffebld expr)
2565 {
2566 tree temp;
2567
2568 ffeste_check_simple_ ();
2569
2570 ffeste_emit_line_note_ ();
2571
2572 ffeste_start_block_ (NULL);
2573
2574 temp = ffecom_make_tempvar ("if", integer_type_node,
2575 FFETARGET_charactersizeNONE, -1);
2576
2577 ffeste_start_stmt_ ();
2578
2579 ffecom_prepare_expr (expr);
2580
2581 if (ffecom_prepare_end ())
2582 {
2583 tree result;
2584
2585 result = ffecom_modify (void_type_node,
2586 temp,
2587 ffecom_truth_value (ffecom_expr (expr)));
2588
2589 expand_expr_stmt (result);
2590
2591 ffeste_end_stmt_ ();
2592 }
2593 else
2594 {
2595 ffeste_end_stmt_ ();
2596
2597 temp = ffecom_truth_value (ffecom_expr (expr));
2598 }
2599
2600 expand_start_cond (temp, 0);
2601 }
2602
2603 /* SELECT CASE statement. */
2604
2605 void
2606 ffeste_R809 (ffestw block, ffebld expr)
2607 {
2608 ffeste_check_simple_ ();
2609
2610 ffeste_emit_line_note_ ();
2611
2612 ffeste_start_block_ (block);
2613
2614 if ((expr == NULL)
2615 || (ffeinfo_basictype (ffebld_info (expr))
2616 == FFEINFO_basictypeANY))
2617 ffestw_set_select_texpr (block, error_mark_node);
2618 else if (ffeinfo_basictype (ffebld_info (expr))
2619 == FFEINFO_basictypeCHARACTER)
2620 {
2621 /* ~~~Someday handle CHARACTER*1, CHARACTER*N */
2622
2623 /* xgettext:no-c-format */
2624 ffebad_start_msg ("SELECT CASE on CHARACTER type (at %0) not supported -- sorry",
2625 FFEBAD_severityFATAL);
2626 ffebad_here (0, ffestw_line (block), ffestw_col (block));
2627 ffebad_finish ();
2628 ffestw_set_select_texpr (block, error_mark_node);
2629 }
2630 else
2631 {
2632 tree result;
2633 tree texpr;
2634
2635 result = ffecom_make_tempvar ("select", ffecom_type_expr (expr),
2636 ffeinfo_size (ffebld_info (expr)),
2637 -1);
2638
2639 ffeste_start_stmt_ ();
2640
2641 ffecom_prepare_expr (expr);
2642
2643 ffecom_prepare_end ();
2644
2645 texpr = ffecom_expr (expr);
2646
2647 assert (TYPE_MAIN_VARIANT (TREE_TYPE (texpr))
2648 == TYPE_MAIN_VARIANT (TREE_TYPE (result)));
2649
2650 texpr = ffecom_modify (void_type_node,
2651 result,
2652 texpr);
2653 expand_expr_stmt (texpr);
2654
2655 ffeste_end_stmt_ ();
2656
2657 expand_start_case (1, result, TREE_TYPE (result),
2658 "SELECT CASE statement");
2659 ffestw_set_select_texpr (block, texpr);
2660 ffestw_set_select_break (block, FALSE);
2661 }
2662 }
2663
2664 /* CASE statement.
2665
2666 If casenum is 0, it's CASE DEFAULT. Else it's the case ranges at
2667 the start of the first_stmt list in the select object at the top of
2668 the stack that match casenum. */
2669
2670 void
2671 ffeste_R810 (ffestw block, unsigned long casenum)
2672 {
2673 ffestwSelect s = ffestw_select (block);
2674 ffestwCase c;
2675 tree texprlow;
2676 tree texprhigh;
2677 tree tlabel;
2678 int pushok;
2679 tree duplicate;
2680
2681 ffeste_check_simple_ ();
2682
2683 if (s->first_stmt == (ffestwCase) &s->first_rel)
2684 c = NULL;
2685 else
2686 c = s->first_stmt;
2687
2688 ffeste_emit_line_note_ ();
2689
2690 if (ffestw_select_texpr (block) == error_mark_node)
2691 return;
2692
2693 /* ~~~Someday handle CHARACTER*1, CHARACTER*N */
2694
2695 tlabel = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
2696
2697 if (ffestw_select_break (block))
2698 expand_exit_something ();
2699 else
2700 ffestw_set_select_break (block, TRUE);
2701
2702 if ((c == NULL) || (casenum != c->casenum))
2703 {
2704 if (casenum == 0) /* Intentional CASE DEFAULT. */
2705 {
2706 pushok = pushcase (NULL_TREE, 0, tlabel, &duplicate);
2707 assert (pushok == 0);
2708 }
2709 }
2710 else
2711 do
2712 {
2713 texprlow = (c->low == NULL) ? NULL_TREE
2714 : ffecom_constantunion_with_type (&ffebld_constant_union (c->low),
2715 ffecom_tree_type[s->type][s->kindtype],c->low->consttype);
2716 if (c->low != c->high)
2717 {
2718 texprhigh = (c->high == NULL) ? NULL_TREE
2719 : ffecom_constantunion_with_type (&ffebld_constant_union (c->high),
2720 ffecom_tree_type[s->type][s->kindtype],c->high->consttype);
2721 pushok = pushcase_range (texprlow, texprhigh, convert,
2722 tlabel, &duplicate);
2723 }
2724 else
2725 pushok = pushcase (texprlow, convert, tlabel, &duplicate);
2726 if (pushok == 2)
2727 {
2728 ffebad_start_msg ("SELECT (at %0) has duplicate cases -- check integer overflow of CASE(s)",
2729 FFEBAD_severityFATAL);
2730 ffebad_here (0, ffestw_line (block), ffestw_col (block));
2731 ffebad_finish ();
2732 ffestw_set_select_texpr (block, error_mark_node);
2733 }
2734 c = c->next_stmt;
2735 /* Unlink prev. */
2736 c->previous_stmt->previous_stmt->next_stmt = c;
2737 c->previous_stmt = c->previous_stmt->previous_stmt;
2738 }
2739 while ((c != (ffestwCase) &s->first_rel) && (casenum == c->casenum));
2740 }
2741
2742 /* END SELECT statement. */
2743
2744 void
2745 ffeste_R811 (ffestw block)
2746 {
2747 ffeste_emit_line_note_ ();
2748
2749 /* ~~~Someday handle CHARACTER*1, CHARACTER*N */
2750
2751 if (TREE_CODE (ffestw_select_texpr (block)) != ERROR_MARK)
2752 expand_end_case (ffestw_select_texpr (block));
2753
2754 ffeste_end_block_ (block);
2755 }
2756
2757 /* Iterative DO statement. */
2758
2759 void
2760 ffeste_R819A (ffestw block, ffelab label UNUSED, ffebld var,
2761 ffebld start, ffelexToken start_token,
2762 ffebld end, ffelexToken end_token,
2763 ffebld incr, ffelexToken incr_token)
2764 {
2765 ffeste_check_simple_ ();
2766
2767 ffeste_emit_line_note_ ();
2768
2769 ffeste_begin_iterdo_ (block, NULL, NULL, NULL,
2770 var,
2771 start, start_token,
2772 end, end_token,
2773 incr, incr_token,
2774 "Iterative DO loop");
2775 }
2776
2777 /* DO WHILE statement. */
2778
2779 void
2780 ffeste_R819B (ffestw block, ffelab label UNUSED, ffebld expr)
2781 {
2782 tree result;
2783
2784 ffeste_check_simple_ ();
2785
2786 ffeste_emit_line_note_ ();
2787
2788 ffeste_start_block_ (block);
2789
2790 if (expr)
2791 {
2792 struct nesting *loop;
2793 tree mod;
2794
2795 result = ffecom_make_tempvar ("dowhile", integer_type_node,
2796 FFETARGET_charactersizeNONE, -1);
2797 loop = expand_start_loop (1);
2798
2799 ffeste_start_stmt_ ();
2800
2801 ffecom_prepare_expr (expr);
2802
2803 ffecom_prepare_end ();
2804
2805 mod = ffecom_modify (void_type_node,
2806 result,
2807 ffecom_truth_value (ffecom_expr (expr)));
2808 expand_expr_stmt (mod);
2809
2810 ffeste_end_stmt_ ();
2811
2812 ffestw_set_do_hook (block, loop);
2813 expand_exit_loop_top_cond (0, result);
2814 }
2815 else
2816 ffestw_set_do_hook (block, expand_start_loop (1));
2817
2818 ffestw_set_do_tvar (block, NULL_TREE);
2819 }
2820
2821 /* END DO statement.
2822
2823 This is the MIL-STD 1753 END DO. It's syntactic sugar, similar to
2824 CONTINUE (except that it has to have a label that is the target of
2825 one or more iterative DO statement), not the Fortran-90 structured
2826 END DO, which is handled elsewhere, as is the actual mechanism of
2827 ending an iterative DO statement, even one that ends at a label. */
2828
2829 void
2830 ffeste_R825 ()
2831 {
2832 ffeste_check_simple_ ();
2833
2834 ffeste_emit_line_note_ ();
2835
2836 emit_nop ();
2837 }
2838
2839 /* CYCLE statement. */
2840
2841 void
2842 ffeste_R834 (ffestw block)
2843 {
2844 ffeste_check_simple_ ();
2845
2846 ffeste_emit_line_note_ ();
2847
2848 expand_continue_loop (ffestw_do_hook (block));
2849 }
2850
2851 /* EXIT statement. */
2852
2853 void
2854 ffeste_R835 (ffestw block)
2855 {
2856 ffeste_check_simple_ ();
2857
2858 ffeste_emit_line_note_ ();
2859
2860 expand_exit_loop (ffestw_do_hook (block));
2861 }
2862
2863 /* GOTO statement. */
2864
2865 void
2866 ffeste_R836 (ffelab label)
2867 {
2868 tree glabel;
2869
2870 ffeste_check_simple_ ();
2871
2872 ffeste_emit_line_note_ ();
2873
2874 glabel = ffecom_lookup_label (label);
2875 if ((glabel != NULL_TREE)
2876 && (TREE_CODE (glabel) != ERROR_MARK))
2877 {
2878 expand_goto (glabel);
2879 TREE_USED (glabel) = 1;
2880 }
2881 }
2882
2883 /* Computed GOTO statement. */
2884
2885 void
2886 ffeste_R837 (ffelab *labels, int count, ffebld expr)
2887 {
2888 int i;
2889 tree texpr;
2890 tree value;
2891 tree tlabel;
2892 int pushok;
2893 tree duplicate;
2894
2895 ffeste_check_simple_ ();
2896
2897 ffeste_emit_line_note_ ();
2898
2899 ffeste_start_stmt_ ();
2900
2901 ffecom_prepare_expr (expr);
2902
2903 ffecom_prepare_end ();
2904
2905 texpr = ffecom_expr (expr);
2906
2907 expand_start_case (0, texpr, TREE_TYPE (texpr), "computed GOTO statement");
2908
2909 for (i = 0; i < count; ++i)
2910 {
2911 value = build_int_2 (i + 1, 0);
2912 tlabel = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
2913
2914 pushok = pushcase (value, convert, tlabel, &duplicate);
2915 assert (pushok == 0);
2916
2917 tlabel = ffecom_lookup_label (labels[i]);
2918 if ((tlabel == NULL_TREE)
2919 || (TREE_CODE (tlabel) == ERROR_MARK))
2920 continue;
2921
2922 expand_goto (tlabel);
2923 TREE_USED (tlabel) = 1;
2924 }
2925 expand_end_case (texpr);
2926
2927 ffeste_end_stmt_ ();
2928 }
2929
2930 /* ASSIGN statement. */
2931
2932 void
2933 ffeste_R838 (ffelab label, ffebld target)
2934 {
2935 tree expr_tree;
2936 tree label_tree;
2937 tree target_tree;
2938
2939 ffeste_check_simple_ ();
2940
2941 ffeste_emit_line_note_ ();
2942
2943 /* No need to call ffeste_start_stmt_(), as the sorts of expressions
2944 seen here should never require use of temporaries. */
2945
2946 label_tree = ffecom_lookup_label (label);
2947 if ((label_tree != NULL_TREE)
2948 && (TREE_CODE (label_tree) != ERROR_MARK))
2949 {
2950 label_tree = ffecom_1 (ADDR_EXPR,
2951 build_pointer_type (void_type_node),
2952 label_tree);
2953 TREE_CONSTANT (label_tree) = 1;
2954
2955 target_tree = ffecom_expr_assign_w (target);
2956 if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (target_tree)))
2957 < GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (label_tree))))
2958 error ("ASSIGN to variable that is too small");
2959
2960 label_tree = convert (TREE_TYPE (target_tree), label_tree);
2961
2962 expr_tree = ffecom_modify (void_type_node,
2963 target_tree,
2964 label_tree);
2965 expand_expr_stmt (expr_tree);
2966 }
2967 }
2968
2969 /* Assigned GOTO statement. */
2970
2971 void
2972 ffeste_R839 (ffebld target)
2973 {
2974 tree t;
2975
2976 ffeste_check_simple_ ();
2977
2978 ffeste_emit_line_note_ ();
2979
2980 /* No need to call ffeste_start_stmt_(), as the sorts of expressions
2981 seen here should never require use of temporaries. */
2982
2983 t = ffecom_expr_assign (target);
2984 if (GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (t)))
2985 < GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (null_pointer_node))))
2986 error ("ASSIGNed GOTO target variable is too small");
2987
2988 expand_computed_goto (convert (TREE_TYPE (null_pointer_node), t));
2989 }
2990
2991 /* Arithmetic IF statement. */
2992
2993 void
2994 ffeste_R840 (ffebld expr, ffelab neg, ffelab zero, ffelab pos)
2995 {
2996 tree gneg = ffecom_lookup_label (neg);
2997 tree gzero = ffecom_lookup_label (zero);
2998 tree gpos = ffecom_lookup_label (pos);
2999 tree texpr;
3000
3001 ffeste_check_simple_ ();
3002
3003 ffeste_emit_line_note_ ();
3004
3005 if ((gneg == NULL_TREE) || (gzero == NULL_TREE) || (gpos == NULL_TREE))
3006 return;
3007 if ((TREE_CODE (gneg) == ERROR_MARK)
3008 || (TREE_CODE (gzero) == ERROR_MARK)
3009 || (TREE_CODE (gpos) == ERROR_MARK))
3010 return;
3011
3012 ffeste_start_stmt_ ();
3013
3014 ffecom_prepare_expr (expr);
3015
3016 ffecom_prepare_end ();
3017
3018 if (neg == zero)
3019 {
3020 if (neg == pos)
3021 expand_goto (gzero);
3022 else
3023 {
3024 /* IF (expr.LE.0) THEN GOTO neg/zero ELSE GOTO pos. */
3025 texpr = ffecom_expr (expr);
3026 texpr = ffecom_2 (LE_EXPR, integer_type_node,
3027 texpr,
3028 convert (TREE_TYPE (texpr),
3029 integer_zero_node));
3030 expand_start_cond (ffecom_truth_value (texpr), 0);
3031 expand_goto (gzero);
3032 expand_start_else ();
3033 expand_goto (gpos);
3034 expand_end_cond ();
3035 }
3036 }
3037 else if (neg == pos)
3038 {
3039 /* IF (expr.NE.0) THEN GOTO neg/pos ELSE GOTO zero. */
3040 texpr = ffecom_expr (expr);
3041 texpr = ffecom_2 (NE_EXPR, integer_type_node,
3042 texpr,
3043 convert (TREE_TYPE (texpr),
3044 integer_zero_node));
3045 expand_start_cond (ffecom_truth_value (texpr), 0);
3046 expand_goto (gneg);
3047 expand_start_else ();
3048 expand_goto (gzero);
3049 expand_end_cond ();
3050 }
3051 else if (zero == pos)
3052 {
3053 /* IF (expr.GE.0) THEN GOTO zero/pos ELSE GOTO neg. */
3054 texpr = ffecom_expr (expr);
3055 texpr = ffecom_2 (GE_EXPR, integer_type_node,
3056 texpr,
3057 convert (TREE_TYPE (texpr),
3058 integer_zero_node));
3059 expand_start_cond (ffecom_truth_value (texpr), 0);
3060 expand_goto (gzero);
3061 expand_start_else ();
3062 expand_goto (gneg);
3063 expand_end_cond ();
3064 }
3065 else
3066 {
3067 /* Use a SAVE_EXPR in combo with:
3068 IF (expr.LT.0) THEN GOTO neg
3069 ELSEIF (expr.GT.0) THEN GOTO pos
3070 ELSE GOTO zero. */
3071 tree expr_saved = ffecom_save_tree (ffecom_expr (expr));
3072
3073 texpr = ffecom_2 (LT_EXPR, integer_type_node,
3074 expr_saved,
3075 convert (TREE_TYPE (expr_saved),
3076 integer_zero_node));
3077 expand_start_cond (ffecom_truth_value (texpr), 0);
3078 expand_goto (gneg);
3079 texpr = ffecom_2 (GT_EXPR, integer_type_node,
3080 expr_saved,
3081 convert (TREE_TYPE (expr_saved),
3082 integer_zero_node));
3083 expand_start_elseif (ffecom_truth_value (texpr));
3084 expand_goto (gpos);
3085 expand_start_else ();
3086 expand_goto (gzero);
3087 expand_end_cond ();
3088 }
3089
3090 ffeste_end_stmt_ ();
3091 }
3092
3093 /* CONTINUE statement. */
3094
3095 void
3096 ffeste_R841 ()
3097 {
3098 ffeste_check_simple_ ();
3099
3100 ffeste_emit_line_note_ ();
3101
3102 emit_nop ();
3103 }
3104
3105 /* STOP statement. */
3106
3107 void
3108 ffeste_R842 (ffebld expr)
3109 {
3110 tree callit;
3111 ffelexToken msg;
3112
3113 ffeste_check_simple_ ();
3114
3115 ffeste_emit_line_note_ ();
3116
3117 if ((expr == NULL)
3118 || (ffeinfo_basictype (ffebld_info (expr))
3119 == FFEINFO_basictypeANY))
3120 {
3121 msg = ffelex_token_new_character ("",
3122 ffelex_token_where_line (ffesta_tokens[0]),
3123 ffelex_token_where_column (ffesta_tokens[0]));
3124 expr = ffebld_new_conter (ffebld_constant_new_characterdefault
3125 (msg));
3126 ffelex_token_kill (msg);
3127 ffebld_set_info (expr, ffeinfo_new (FFEINFO_basictypeCHARACTER,
3128 FFEINFO_kindtypeCHARACTERDEFAULT,
3129 0, FFEINFO_kindENTITY,
3130 FFEINFO_whereCONSTANT, 0));
3131 }
3132 else if (ffeinfo_basictype (ffebld_info (expr))
3133 == FFEINFO_basictypeINTEGER)
3134 {
3135 char num[50];
3136
3137 assert (ffebld_op (expr) == FFEBLD_opCONTER);
3138 assert (ffeinfo_kindtype (ffebld_info (expr))
3139 == FFEINFO_kindtypeINTEGERDEFAULT);
3140 sprintf (num, "%" ffetargetIntegerDefault_f "d",
3141 ffebld_constant_integer1 (ffebld_conter (expr)));
3142 msg = ffelex_token_new_character (num,
3143 ffelex_token_where_line (ffesta_tokens[0]),
3144 ffelex_token_where_column (ffesta_tokens[0]));
3145 expr = ffebld_new_conter (ffebld_constant_new_characterdefault (msg));
3146 ffelex_token_kill (msg);
3147 ffebld_set_info (expr, ffeinfo_new (FFEINFO_basictypeCHARACTER,
3148 FFEINFO_kindtypeCHARACTERDEFAULT,
3149 0, FFEINFO_kindENTITY,
3150 FFEINFO_whereCONSTANT, 0));
3151 }
3152 else
3153 {
3154 assert (ffeinfo_basictype (ffebld_info (expr))
3155 == FFEINFO_basictypeCHARACTER);
3156 assert (ffebld_op (expr) == FFEBLD_opCONTER);
3157 assert (ffeinfo_kindtype (ffebld_info (expr))
3158 == FFEINFO_kindtypeCHARACTERDEFAULT);
3159 }
3160
3161 /* No need to call ffeste_start_stmt_(), as the sorts of expressions
3162 seen here should never require use of temporaries. */
3163
3164 callit = ffecom_call_gfrt (FFECOM_gfrtSTOP,
3165 ffecom_list_ptr_to_expr (ffebld_new_item (expr, NULL)),
3166 NULL_TREE);
3167 TREE_SIDE_EFFECTS (callit) = 1;
3168
3169 expand_expr_stmt (callit);
3170 }
3171
3172 /* PAUSE statement. */
3173
3174 void
3175 ffeste_R843 (ffebld expr)
3176 {
3177 tree callit;
3178 ffelexToken msg;
3179
3180 ffeste_check_simple_ ();
3181
3182 ffeste_emit_line_note_ ();
3183
3184 if ((expr == NULL)
3185 || (ffeinfo_basictype (ffebld_info (expr))
3186 == FFEINFO_basictypeANY))
3187 {
3188 msg = ffelex_token_new_character ("",
3189 ffelex_token_where_line (ffesta_tokens[0]),
3190 ffelex_token_where_column (ffesta_tokens[0]));
3191 expr = ffebld_new_conter (ffebld_constant_new_characterdefault (msg));
3192 ffelex_token_kill (msg);
3193 ffebld_set_info (expr, ffeinfo_new (FFEINFO_basictypeCHARACTER,
3194 FFEINFO_kindtypeCHARACTERDEFAULT,
3195 0, FFEINFO_kindENTITY,
3196 FFEINFO_whereCONSTANT, 0));
3197 }
3198 else if (ffeinfo_basictype (ffebld_info (expr)) == FFEINFO_basictypeINTEGER)
3199 {
3200 char num[50];
3201
3202 assert (ffebld_op (expr) == FFEBLD_opCONTER);
3203 assert (ffeinfo_kindtype (ffebld_info (expr))
3204 == FFEINFO_kindtypeINTEGERDEFAULT);
3205 sprintf (num, "%" ffetargetIntegerDefault_f "d",
3206 ffebld_constant_integer1 (ffebld_conter (expr)));
3207 msg = ffelex_token_new_character (num, ffelex_token_where_line (ffesta_tokens[0]),
3208 ffelex_token_where_column (ffesta_tokens[0]));
3209 expr = ffebld_new_conter (ffebld_constant_new_characterdefault (msg));
3210 ffelex_token_kill (msg);
3211 ffebld_set_info (expr, ffeinfo_new (FFEINFO_basictypeCHARACTER,
3212 FFEINFO_kindtypeCHARACTERDEFAULT,
3213 0, FFEINFO_kindENTITY,
3214 FFEINFO_whereCONSTANT, 0));
3215 }
3216 else
3217 {
3218 assert (ffeinfo_basictype (ffebld_info (expr))
3219 == FFEINFO_basictypeCHARACTER);
3220 assert (ffebld_op (expr) == FFEBLD_opCONTER);
3221 assert (ffeinfo_kindtype (ffebld_info (expr))
3222 == FFEINFO_kindtypeCHARACTERDEFAULT);
3223 }
3224
3225 /* No need to call ffeste_start_stmt_(), as the sorts of expressions
3226 seen here should never require use of temporaries. */
3227
3228 callit = ffecom_call_gfrt (FFECOM_gfrtPAUSE,
3229 ffecom_list_ptr_to_expr (ffebld_new_item (expr, NULL)),
3230 NULL_TREE);
3231 TREE_SIDE_EFFECTS (callit) = 1;
3232
3233 expand_expr_stmt (callit);
3234 }
3235
3236 /* OPEN statement. */
3237
3238 void
3239 ffeste_R904 (ffestpOpenStmt *info)
3240 {
3241 tree args;
3242 bool iostat;
3243 bool errl;
3244
3245 ffeste_check_simple_ ();
3246
3247 ffeste_emit_line_note_ ();
3248
3249 #define specified(something) (info->open_spec[something].kw_or_val_present)
3250
3251 iostat = specified (FFESTP_openixIOSTAT);
3252 errl = specified (FFESTP_openixERR);
3253
3254 #undef specified
3255
3256 ffeste_start_stmt_ ();
3257
3258 if (errl)
3259 {
3260 ffeste_io_err_
3261 = ffeste_io_abort_
3262 = ffecom_lookup_label
3263 (info->open_spec[FFESTP_openixERR].u.label);
3264 ffeste_io_abort_is_temp_ = FALSE;
3265 }
3266 else
3267 {
3268 ffeste_io_err_ = NULL_TREE;
3269
3270 if ((ffeste_io_abort_is_temp_ = iostat))
3271 ffeste_io_abort_ = ffecom_temp_label ();
3272 else
3273 ffeste_io_abort_ = NULL_TREE;
3274 }
3275
3276 if (iostat)
3277 {
3278 /* Have IOSTAT= specification. */
3279
3280 ffeste_io_iostat_is_temp_ = FALSE;
3281 ffeste_io_iostat_ = ffecom_expr
3282 (info->open_spec[FFESTP_openixIOSTAT].u.expr);
3283 }
3284 else if (ffeste_io_abort_ != NULL_TREE)
3285 {
3286 /* Have no IOSTAT= but have ERR=. */
3287
3288 ffeste_io_iostat_is_temp_ = TRUE;
3289 ffeste_io_iostat_
3290 = ffecom_make_tempvar ("open", ffecom_integer_type_node,
3291 FFETARGET_charactersizeNONE, -1);
3292 }
3293 else
3294 {
3295 /* No IOSTAT= or ERR= specification. */
3296
3297 ffeste_io_iostat_is_temp_ = FALSE;
3298 ffeste_io_iostat_ = NULL_TREE;
3299 }
3300
3301 /* Now prescan, then convert, all the arguments. */
3302
3303 args = ffeste_io_olist_ (errl || iostat,
3304 info->open_spec[FFESTP_openixUNIT].u.expr,
3305 &info->open_spec[FFESTP_openixFILE],
3306 &info->open_spec[FFESTP_openixSTATUS],
3307 &info->open_spec[FFESTP_openixACCESS],
3308 &info->open_spec[FFESTP_openixFORM],
3309 &info->open_spec[FFESTP_openixRECL],
3310 &info->open_spec[FFESTP_openixBLANK]);
3311
3312 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
3313 label, since we're gonna fall through to there anyway. */
3314
3315 ffeste_io_call_ (ffecom_call_gfrt (FFECOM_gfrtFOPEN, args, NULL_TREE),
3316 ! ffeste_io_abort_is_temp_);
3317
3318 /* If we've got a temp label, generate its code here. */
3319
3320 if (ffeste_io_abort_is_temp_)
3321 {
3322 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
3323 emit_nop ();
3324 expand_label (ffeste_io_abort_);
3325
3326 assert (ffeste_io_err_ == NULL_TREE);
3327 }
3328
3329 ffeste_end_stmt_ ();
3330 }
3331
3332 /* CLOSE statement. */
3333
3334 void
3335 ffeste_R907 (ffestpCloseStmt *info)
3336 {
3337 tree args;
3338 bool iostat;
3339 bool errl;
3340
3341 ffeste_check_simple_ ();
3342
3343 ffeste_emit_line_note_ ();
3344
3345 #define specified(something) (info->close_spec[something].kw_or_val_present)
3346
3347 iostat = specified (FFESTP_closeixIOSTAT);
3348 errl = specified (FFESTP_closeixERR);
3349
3350 #undef specified
3351
3352 ffeste_start_stmt_ ();
3353
3354 if (errl)
3355 {
3356 ffeste_io_err_
3357 = ffeste_io_abort_
3358 = ffecom_lookup_label
3359 (info->close_spec[FFESTP_closeixERR].u.label);
3360 ffeste_io_abort_is_temp_ = FALSE;
3361 }
3362 else
3363 {
3364 ffeste_io_err_ = NULL_TREE;
3365
3366 if ((ffeste_io_abort_is_temp_ = iostat))
3367 ffeste_io_abort_ = ffecom_temp_label ();
3368 else
3369 ffeste_io_abort_ = NULL_TREE;
3370 }
3371
3372 if (iostat)
3373 {
3374 /* Have IOSTAT= specification. */
3375
3376 ffeste_io_iostat_is_temp_ = FALSE;
3377 ffeste_io_iostat_ = ffecom_expr
3378 (info->close_spec[FFESTP_closeixIOSTAT].u.expr);
3379 }
3380 else if (ffeste_io_abort_ != NULL_TREE)
3381 {
3382 /* Have no IOSTAT= but have ERR=. */
3383
3384 ffeste_io_iostat_is_temp_ = TRUE;
3385 ffeste_io_iostat_
3386 = ffecom_make_tempvar ("close", ffecom_integer_type_node,
3387 FFETARGET_charactersizeNONE, -1);
3388 }
3389 else
3390 {
3391 /* No IOSTAT= or ERR= specification. */
3392
3393 ffeste_io_iostat_is_temp_ = FALSE;
3394 ffeste_io_iostat_ = NULL_TREE;
3395 }
3396
3397 /* Now prescan, then convert, all the arguments. */
3398
3399 args = ffeste_io_cllist_ (errl || iostat,
3400 info->close_spec[FFESTP_closeixUNIT].u.expr,
3401 &info->close_spec[FFESTP_closeixSTATUS]);
3402
3403 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
3404 label, since we're gonna fall through to there anyway. */
3405
3406 ffeste_io_call_ (ffecom_call_gfrt (FFECOM_gfrtFCLOS, args, NULL_TREE),
3407 ! ffeste_io_abort_is_temp_);
3408
3409 /* If we've got a temp label, generate its code here. */
3410
3411 if (ffeste_io_abort_is_temp_)
3412 {
3413 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
3414 emit_nop ();
3415 expand_label (ffeste_io_abort_);
3416
3417 assert (ffeste_io_err_ == NULL_TREE);
3418 }
3419
3420 ffeste_end_stmt_ ();
3421 }
3422
3423 /* READ(...) statement -- start. */
3424
3425 void
3426 ffeste_R909_start (ffestpReadStmt *info, bool only_format UNUSED,
3427 ffestvUnit unit, ffestvFormat format, bool rec,
3428 bool key UNUSED)
3429 {
3430 ffecomGfrt start;
3431 ffecomGfrt end;
3432 tree cilist;
3433 bool iostat;
3434 bool errl;
3435 bool endl;
3436
3437 ffeste_check_start_ ();
3438
3439 ffeste_emit_line_note_ ();
3440
3441 /* First determine the start, per-item, and end run-time functions to
3442 call. The per-item function is picked by choosing an ffeste function
3443 to call to handle a given item; it knows how to generate a call to the
3444 appropriate run-time function, and is called an "I/O driver". */
3445
3446 switch (format)
3447 {
3448 case FFESTV_formatNONE: /* no FMT= */
3449 ffeste_io_driver_ = ffeste_io_douio_;
3450 if (rec)
3451 start = FFECOM_gfrtSRDUE, end = FFECOM_gfrtERDUE;
3452 else
3453 start = FFECOM_gfrtSRSUE, end = FFECOM_gfrtERSUE;
3454 break;
3455
3456 case FFESTV_formatLABEL: /* FMT=10 */
3457 case FFESTV_formatCHAREXPR: /* FMT='(I10)' */
3458 case FFESTV_formatINTEXPR: /* FMT=I [after ASSIGN 10 TO I] */
3459 ffeste_io_driver_ = ffeste_io_dofio_;
3460 if (rec)
3461 start = FFECOM_gfrtSRDFE, end = FFECOM_gfrtERDFE;
3462 else if (unit == FFESTV_unitCHAREXPR)
3463 start = FFECOM_gfrtSRSFI, end = FFECOM_gfrtERSFI;
3464 else
3465 start = FFECOM_gfrtSRSFE, end = FFECOM_gfrtERSFE;
3466 break;
3467
3468 case FFESTV_formatASTERISK: /* FMT=* */
3469 ffeste_io_driver_ = ffeste_io_dolio_;
3470 if (unit == FFESTV_unitCHAREXPR)
3471 start = FFECOM_gfrtSRSLI, end = FFECOM_gfrtERSLI;
3472 else
3473 start = FFECOM_gfrtSRSLE, end = FFECOM_gfrtERSLE;
3474 break;
3475
3476 case FFESTV_formatNAMELIST: /* FMT=FOO or NML=FOO [NAMELIST
3477 /FOO/] */
3478 ffeste_io_driver_ = NULL; /* No start or driver function. */
3479 start = FFECOM_gfrtSRSNE, end = FFECOM_gfrt;
3480 break;
3481
3482 default:
3483 assert ("Weird stuff" == NULL);
3484 start = FFECOM_gfrt, end = FFECOM_gfrt;
3485 break;
3486 }
3487 ffeste_io_endgfrt_ = end;
3488
3489 #define specified(something) (info->read_spec[something].kw_or_val_present)
3490
3491 iostat = specified (FFESTP_readixIOSTAT);
3492 errl = specified (FFESTP_readixERR);
3493 endl = specified (FFESTP_readixEND);
3494
3495 #undef specified
3496
3497 ffeste_start_stmt_ ();
3498
3499 if (errl)
3500 {
3501 /* Have ERR= specification. */
3502
3503 ffeste_io_err_
3504 = ffecom_lookup_label (info->read_spec[FFESTP_readixERR].u.label);
3505
3506 if (endl)
3507 {
3508 /* Have both ERR= and END=. Need a temp label to handle both. */
3509 ffeste_io_end_
3510 = ffecom_lookup_label (info->read_spec[FFESTP_readixEND].u.label);
3511 ffeste_io_abort_is_temp_ = TRUE;
3512 ffeste_io_abort_ = ffecom_temp_label ();
3513 }
3514 else
3515 {
3516 /* Have ERR= but no END=. */
3517 ffeste_io_end_ = NULL_TREE;
3518 if ((ffeste_io_abort_is_temp_ = iostat))
3519 ffeste_io_abort_ = ffecom_temp_label ();
3520 else
3521 ffeste_io_abort_ = ffeste_io_err_;
3522 }
3523 }
3524 else
3525 {
3526 /* No ERR= specification. */
3527
3528 ffeste_io_err_ = NULL_TREE;
3529 if (endl)
3530 {
3531 /* Have END= but no ERR=. */
3532 ffeste_io_end_
3533 = ffecom_lookup_label (info->read_spec[FFESTP_readixEND].u.label);
3534 if ((ffeste_io_abort_is_temp_ = iostat))
3535 ffeste_io_abort_ = ffecom_temp_label ();
3536 else
3537 ffeste_io_abort_ = ffeste_io_end_;
3538 }
3539 else
3540 {
3541 /* Have no ERR= or END=. */
3542
3543 ffeste_io_end_ = NULL_TREE;
3544 if ((ffeste_io_abort_is_temp_ = iostat))
3545 ffeste_io_abort_ = ffecom_temp_label ();
3546 else
3547 ffeste_io_abort_ = NULL_TREE;
3548 }
3549 }
3550
3551 if (iostat)
3552 {
3553 /* Have IOSTAT= specification. */
3554
3555 ffeste_io_iostat_is_temp_ = FALSE;
3556 ffeste_io_iostat_
3557 = ffecom_expr (info->read_spec[FFESTP_readixIOSTAT].u.expr);
3558 }
3559 else if (ffeste_io_abort_ != NULL_TREE)
3560 {
3561 /* Have no IOSTAT= but have ERR= and/or END=. */
3562
3563 ffeste_io_iostat_is_temp_ = TRUE;
3564 ffeste_io_iostat_
3565 = ffecom_make_tempvar ("read", ffecom_integer_type_node,
3566 FFETARGET_charactersizeNONE, -1);
3567 }
3568 else
3569 {
3570 /* No IOSTAT=, ERR=, or END= specification. */
3571
3572 ffeste_io_iostat_is_temp_ = FALSE;
3573 ffeste_io_iostat_ = NULL_TREE;
3574 }
3575
3576 /* Now prescan, then convert, all the arguments. */
3577
3578 if (unit == FFESTV_unitCHAREXPR)
3579 cilist = ffeste_io_icilist_ (errl || iostat,
3580 info->read_spec[FFESTP_readixUNIT].u.expr,
3581 endl || iostat, format,
3582 &info->read_spec[FFESTP_readixFORMAT]);
3583 else
3584 cilist = ffeste_io_cilist_ (errl || iostat, unit,
3585 info->read_spec[FFESTP_readixUNIT].u.expr,
3586 5, endl || iostat, format,
3587 &info->read_spec[FFESTP_readixFORMAT],
3588 rec,
3589 info->read_spec[FFESTP_readixREC].u.expr);
3590
3591 /* If there is no end function, then there are no item functions (i.e.
3592 it's a NAMELIST), and vice versa by the way. In this situation, don't
3593 generate the "if (iostat != 0) goto label;" if the label is temp abort
3594 label, since we're gonna fall through to there anyway. */
3595
3596 ffeste_io_call_ (ffecom_call_gfrt (start, cilist, NULL_TREE),
3597 (! ffeste_io_abort_is_temp_) || (end != FFECOM_gfrt));
3598 }
3599
3600 /* READ statement -- I/O item. */
3601
3602 void
3603 ffeste_R909_item (ffebld expr, ffelexToken expr_token)
3604 {
3605 ffeste_check_item_ ();
3606
3607 if (expr == NULL)
3608 return;
3609
3610 /* Strip parens off items such as in "READ *,(A)". This is really a bug
3611 in the user's code, but I've been told lots of code does this. */
3612 while (ffebld_op (expr) == FFEBLD_opPAREN)
3613 expr = ffebld_left (expr);
3614
3615 if (ffebld_op (expr) == FFEBLD_opANY)
3616 return;
3617
3618 if (ffebld_op (expr) == FFEBLD_opIMPDO)
3619 ffeste_io_impdo_ (expr, expr_token);
3620 else
3621 {
3622 ffeste_start_stmt_ ();
3623
3624 ffecom_prepare_arg_ptr_to_expr (expr);
3625
3626 ffecom_prepare_end ();
3627
3628 ffeste_io_call_ ((*ffeste_io_driver_) (expr), TRUE);
3629
3630 ffeste_end_stmt_ ();
3631 }
3632 }
3633
3634 /* READ statement -- end. */
3635
3636 void
3637 ffeste_R909_finish ()
3638 {
3639 ffeste_check_finish_ ();
3640
3641 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
3642 label, since we're gonna fall through to there anyway. */
3643
3644 if (ffeste_io_endgfrt_ != FFECOM_gfrt)
3645 ffeste_io_call_ (ffecom_call_gfrt (ffeste_io_endgfrt_, NULL_TREE,
3646 NULL_TREE),
3647 ! ffeste_io_abort_is_temp_);
3648
3649 /* If we've got a temp label, generate its code here and have it fan out
3650 to the END= or ERR= label as appropriate. */
3651
3652 if (ffeste_io_abort_is_temp_)
3653 {
3654 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
3655 emit_nop ();
3656 expand_label (ffeste_io_abort_);
3657
3658 /* "if (iostat<0) goto end_label;". */
3659
3660 if ((ffeste_io_end_ != NULL_TREE)
3661 && (TREE_CODE (ffeste_io_end_) != ERROR_MARK))
3662 {
3663 expand_start_cond (ffecom_truth_value
3664 (ffecom_2 (LT_EXPR, integer_type_node,
3665 ffeste_io_iostat_,
3666 ffecom_integer_zero_node)),
3667 0);
3668 expand_goto (ffeste_io_end_);
3669 expand_end_cond ();
3670 }
3671
3672 /* "if (iostat>0) goto err_label;". */
3673
3674 if ((ffeste_io_err_ != NULL_TREE)
3675 && (TREE_CODE (ffeste_io_err_) != ERROR_MARK))
3676 {
3677 expand_start_cond (ffecom_truth_value
3678 (ffecom_2 (GT_EXPR, integer_type_node,
3679 ffeste_io_iostat_,
3680 ffecom_integer_zero_node)),
3681 0);
3682 expand_goto (ffeste_io_err_);
3683 expand_end_cond ();
3684 }
3685 }
3686
3687 ffeste_end_stmt_ ();
3688 }
3689
3690 /* WRITE statement -- start. */
3691
3692 void
3693 ffeste_R910_start (ffestpWriteStmt *info, ffestvUnit unit,
3694 ffestvFormat format, bool rec)
3695 {
3696 ffecomGfrt start;
3697 ffecomGfrt end;
3698 tree cilist;
3699 bool iostat;
3700 bool errl;
3701
3702 ffeste_check_start_ ();
3703
3704 ffeste_emit_line_note_ ();
3705
3706 /* First determine the start, per-item, and end run-time functions to
3707 call. The per-item function is picked by choosing an ffeste function
3708 to call to handle a given item; it knows how to generate a call to the
3709 appropriate run-time function, and is called an "I/O driver". */
3710
3711 switch (format)
3712 {
3713 case FFESTV_formatNONE: /* no FMT= */
3714 ffeste_io_driver_ = ffeste_io_douio_;
3715 if (rec)
3716 start = FFECOM_gfrtSWDUE, end = FFECOM_gfrtEWDUE;
3717 else
3718 start = FFECOM_gfrtSWSUE, end = FFECOM_gfrtEWSUE;
3719 break;
3720
3721 case FFESTV_formatLABEL: /* FMT=10 */
3722 case FFESTV_formatCHAREXPR: /* FMT='(I10)' */
3723 case FFESTV_formatINTEXPR: /* FMT=I [after ASSIGN 10 TO I] */
3724 ffeste_io_driver_ = ffeste_io_dofio_;
3725 if (rec)
3726 start = FFECOM_gfrtSWDFE, end = FFECOM_gfrtEWDFE;
3727 else if (unit == FFESTV_unitCHAREXPR)
3728 start = FFECOM_gfrtSWSFI, end = FFECOM_gfrtEWSFI;
3729 else
3730 start = FFECOM_gfrtSWSFE, end = FFECOM_gfrtEWSFE;
3731 break;
3732
3733 case FFESTV_formatASTERISK: /* FMT=* */
3734 ffeste_io_driver_ = ffeste_io_dolio_;
3735 if (unit == FFESTV_unitCHAREXPR)
3736 start = FFECOM_gfrtSWSLI, end = FFECOM_gfrtEWSLI;
3737 else
3738 start = FFECOM_gfrtSWSLE, end = FFECOM_gfrtEWSLE;
3739 break;
3740
3741 case FFESTV_formatNAMELIST: /* FMT=FOO or NML=FOO [NAMELIST
3742 /FOO/] */
3743 ffeste_io_driver_ = NULL; /* No start or driver function. */
3744 start = FFECOM_gfrtSWSNE, end = FFECOM_gfrt;
3745 break;
3746
3747 default:
3748 assert ("Weird stuff" == NULL);
3749 start = FFECOM_gfrt, end = FFECOM_gfrt;
3750 break;
3751 }
3752 ffeste_io_endgfrt_ = end;
3753
3754 #define specified(something) (info->write_spec[something].kw_or_val_present)
3755
3756 iostat = specified (FFESTP_writeixIOSTAT);
3757 errl = specified (FFESTP_writeixERR);
3758
3759 #undef specified
3760
3761 ffeste_start_stmt_ ();
3762
3763 ffeste_io_end_ = NULL_TREE;
3764
3765 if (errl)
3766 {
3767 /* Have ERR= specification. */
3768
3769 ffeste_io_err_
3770 = ffeste_io_abort_
3771 = ffecom_lookup_label
3772 (info->write_spec[FFESTP_writeixERR].u.label);
3773 ffeste_io_abort_is_temp_ = FALSE;
3774 }
3775 else
3776 {
3777 /* No ERR= specification. */
3778
3779 ffeste_io_err_ = NULL_TREE;
3780
3781 if ((ffeste_io_abort_is_temp_ = iostat))
3782 ffeste_io_abort_ = ffecom_temp_label ();
3783 else
3784 ffeste_io_abort_ = NULL_TREE;
3785 }
3786
3787 if (iostat)
3788 {
3789 /* Have IOSTAT= specification. */
3790
3791 ffeste_io_iostat_is_temp_ = FALSE;
3792 ffeste_io_iostat_ = ffecom_expr
3793 (info->write_spec[FFESTP_writeixIOSTAT].u.expr);
3794 }
3795 else if (ffeste_io_abort_ != NULL_TREE)
3796 {
3797 /* Have no IOSTAT= but have ERR=. */
3798
3799 ffeste_io_iostat_is_temp_ = TRUE;
3800 ffeste_io_iostat_
3801 = ffecom_make_tempvar ("write", ffecom_integer_type_node,
3802 FFETARGET_charactersizeNONE, -1);
3803 }
3804 else
3805 {
3806 /* No IOSTAT= or ERR= specification. */
3807
3808 ffeste_io_iostat_is_temp_ = FALSE;
3809 ffeste_io_iostat_ = NULL_TREE;
3810 }
3811
3812 /* Now prescan, then convert, all the arguments. */
3813
3814 if (unit == FFESTV_unitCHAREXPR)
3815 cilist = ffeste_io_icilist_ (errl || iostat,
3816 info->write_spec[FFESTP_writeixUNIT].u.expr,
3817 FALSE, format,
3818 &info->write_spec[FFESTP_writeixFORMAT]);
3819 else
3820 cilist = ffeste_io_cilist_ (errl || iostat, unit,
3821 info->write_spec[FFESTP_writeixUNIT].u.expr,
3822 6, FALSE, format,
3823 &info->write_spec[FFESTP_writeixFORMAT],
3824 rec,
3825 info->write_spec[FFESTP_writeixREC].u.expr);
3826
3827 /* If there is no end function, then there are no item functions (i.e.
3828 it's a NAMELIST), and vice versa by the way. In this situation, don't
3829 generate the "if (iostat != 0) goto label;" if the label is temp abort
3830 label, since we're gonna fall through to there anyway. */
3831
3832 ffeste_io_call_ (ffecom_call_gfrt (start, cilist, NULL_TREE),
3833 (! ffeste_io_abort_is_temp_) || (end != FFECOM_gfrt));
3834 }
3835
3836 /* WRITE statement -- I/O item. */
3837
3838 void
3839 ffeste_R910_item (ffebld expr, ffelexToken expr_token)
3840 {
3841 ffeste_check_item_ ();
3842
3843 if (expr == NULL)
3844 return;
3845
3846 if (ffebld_op (expr) == FFEBLD_opANY)
3847 return;
3848
3849 if (ffebld_op (expr) == FFEBLD_opIMPDO)
3850 ffeste_io_impdo_ (expr, expr_token);
3851 else
3852 {
3853 ffeste_start_stmt_ ();
3854
3855 ffecom_prepare_arg_ptr_to_expr (expr);
3856
3857 ffecom_prepare_end ();
3858
3859 ffeste_io_call_ ((*ffeste_io_driver_) (expr), TRUE);
3860
3861 ffeste_end_stmt_ ();
3862 }
3863 }
3864
3865 /* WRITE statement -- end. */
3866
3867 void
3868 ffeste_R910_finish ()
3869 {
3870 ffeste_check_finish_ ();
3871
3872 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
3873 label, since we're gonna fall through to there anyway. */
3874
3875 if (ffeste_io_endgfrt_ != FFECOM_gfrt)
3876 ffeste_io_call_ (ffecom_call_gfrt (ffeste_io_endgfrt_, NULL_TREE,
3877 NULL_TREE),
3878 ! ffeste_io_abort_is_temp_);
3879
3880 /* If we've got a temp label, generate its code here. */
3881
3882 if (ffeste_io_abort_is_temp_)
3883 {
3884 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
3885 emit_nop ();
3886 expand_label (ffeste_io_abort_);
3887
3888 assert (ffeste_io_err_ == NULL_TREE);
3889 }
3890
3891 ffeste_end_stmt_ ();
3892 }
3893
3894 /* PRINT statement -- start. */
3895
3896 void
3897 ffeste_R911_start (ffestpPrintStmt *info, ffestvFormat format)
3898 {
3899 ffecomGfrt start;
3900 ffecomGfrt end;
3901 tree cilist;
3902
3903 ffeste_check_start_ ();
3904
3905 ffeste_emit_line_note_ ();
3906
3907 /* First determine the start, per-item, and end run-time functions to
3908 call. The per-item function is picked by choosing an ffeste function
3909 to call to handle a given item; it knows how to generate a call to the
3910 appropriate run-time function, and is called an "I/O driver". */
3911
3912 switch (format)
3913 {
3914 case FFESTV_formatLABEL: /* FMT=10 */
3915 case FFESTV_formatCHAREXPR: /* FMT='(I10)' */
3916 case FFESTV_formatINTEXPR: /* FMT=I [after ASSIGN 10 TO I] */
3917 ffeste_io_driver_ = ffeste_io_dofio_;
3918 start = FFECOM_gfrtSWSFE, end = FFECOM_gfrtEWSFE;
3919 break;
3920
3921 case FFESTV_formatASTERISK: /* FMT=* */
3922 ffeste_io_driver_ = ffeste_io_dolio_;
3923 start = FFECOM_gfrtSWSLE, end = FFECOM_gfrtEWSLE;
3924 break;
3925
3926 case FFESTV_formatNAMELIST: /* FMT=FOO or NML=FOO [NAMELIST
3927 /FOO/] */
3928 ffeste_io_driver_ = NULL; /* No start or driver function. */
3929 start = FFECOM_gfrtSWSNE, end = FFECOM_gfrt;
3930 break;
3931
3932 default:
3933 assert ("Weird stuff" == NULL);
3934 start = FFECOM_gfrt, end = FFECOM_gfrt;
3935 break;
3936 }
3937 ffeste_io_endgfrt_ = end;
3938
3939 ffeste_start_stmt_ ();
3940
3941 ffeste_io_end_ = NULL_TREE;
3942 ffeste_io_err_ = NULL_TREE;
3943 ffeste_io_abort_ = NULL_TREE;
3944 ffeste_io_abort_is_temp_ = FALSE;
3945 ffeste_io_iostat_is_temp_ = FALSE;
3946 ffeste_io_iostat_ = NULL_TREE;
3947
3948 /* Now prescan, then convert, all the arguments. */
3949
3950 cilist = ffeste_io_cilist_ (FALSE, FFESTV_unitNONE, NULL, 6, FALSE, format,
3951 &info->print_spec[FFESTP_printixFORMAT],
3952 FALSE, NULL);
3953
3954 /* If there is no end function, then there are no item functions (i.e.
3955 it's a NAMELIST), and vice versa by the way. In this situation, don't
3956 generate the "if (iostat != 0) goto label;" if the label is temp abort
3957 label, since we're gonna fall through to there anyway. */
3958
3959 ffeste_io_call_ (ffecom_call_gfrt (start, cilist, NULL_TREE),
3960 (! ffeste_io_abort_is_temp_) || (end != FFECOM_gfrt));
3961 }
3962
3963 /* PRINT statement -- I/O item. */
3964
3965 void
3966 ffeste_R911_item (ffebld expr, ffelexToken expr_token)
3967 {
3968 ffeste_check_item_ ();
3969
3970 if (expr == NULL)
3971 return;
3972
3973 if (ffebld_op (expr) == FFEBLD_opANY)
3974 return;
3975
3976 if (ffebld_op (expr) == FFEBLD_opIMPDO)
3977 ffeste_io_impdo_ (expr, expr_token);
3978 else
3979 {
3980 ffeste_start_stmt_ ();
3981
3982 ffecom_prepare_arg_ptr_to_expr (expr);
3983
3984 ffecom_prepare_end ();
3985
3986 ffeste_io_call_ ((*ffeste_io_driver_) (expr), TRUE);
3987
3988 ffeste_end_stmt_ ();
3989 }
3990 }
3991
3992 /* PRINT statement -- end. */
3993
3994 void
3995 ffeste_R911_finish ()
3996 {
3997 ffeste_check_finish_ ();
3998
3999 if (ffeste_io_endgfrt_ != FFECOM_gfrt)
4000 ffeste_io_call_ (ffecom_call_gfrt (ffeste_io_endgfrt_, NULL_TREE,
4001 NULL_TREE),
4002 FALSE);
4003
4004 ffeste_end_stmt_ ();
4005 }
4006
4007 /* BACKSPACE statement. */
4008
4009 void
4010 ffeste_R919 (ffestpBeruStmt *info)
4011 {
4012 ffeste_check_simple_ ();
4013
4014 ffeste_subr_beru_ (info, FFECOM_gfrtFBACK);
4015 }
4016
4017 /* ENDFILE statement. */
4018
4019 void
4020 ffeste_R920 (ffestpBeruStmt *info)
4021 {
4022 ffeste_check_simple_ ();
4023
4024 ffeste_subr_beru_ (info, FFECOM_gfrtFEND);
4025 }
4026
4027 /* REWIND statement. */
4028
4029 void
4030 ffeste_R921 (ffestpBeruStmt *info)
4031 {
4032 ffeste_check_simple_ ();
4033
4034 ffeste_subr_beru_ (info, FFECOM_gfrtFREW);
4035 }
4036
4037 /* INQUIRE statement (non-IOLENGTH version). */
4038
4039 void
4040 ffeste_R923A (ffestpInquireStmt *info, bool by_file UNUSED)
4041 {
4042 tree args;
4043 bool iostat;
4044 bool errl;
4045
4046 ffeste_check_simple_ ();
4047
4048 ffeste_emit_line_note_ ();
4049
4050 #define specified(something) (info->inquire_spec[something].kw_or_val_present)
4051
4052 iostat = specified (FFESTP_inquireixIOSTAT);
4053 errl = specified (FFESTP_inquireixERR);
4054
4055 #undef specified
4056
4057 ffeste_start_stmt_ ();
4058
4059 if (errl)
4060 {
4061 ffeste_io_err_
4062 = ffeste_io_abort_
4063 = ffecom_lookup_label
4064 (info->inquire_spec[FFESTP_inquireixERR].u.label);
4065 ffeste_io_abort_is_temp_ = FALSE;
4066 }
4067 else
4068 {
4069 ffeste_io_err_ = NULL_TREE;
4070
4071 if ((ffeste_io_abort_is_temp_ = iostat))
4072 ffeste_io_abort_ = ffecom_temp_label ();
4073 else
4074 ffeste_io_abort_ = NULL_TREE;
4075 }
4076
4077 if (iostat)
4078 {
4079 /* Have IOSTAT= specification. */
4080
4081 ffeste_io_iostat_is_temp_ = FALSE;
4082 ffeste_io_iostat_ = ffecom_expr
4083 (info->inquire_spec[FFESTP_inquireixIOSTAT].u.expr);
4084 }
4085 else if (ffeste_io_abort_ != NULL_TREE)
4086 {
4087 /* Have no IOSTAT= but have ERR=. */
4088
4089 ffeste_io_iostat_is_temp_ = TRUE;
4090 ffeste_io_iostat_
4091 = ffecom_make_tempvar ("inquire", ffecom_integer_type_node,
4092 FFETARGET_charactersizeNONE, -1);
4093 }
4094 else
4095 {
4096 /* No IOSTAT= or ERR= specification. */
4097
4098 ffeste_io_iostat_is_temp_ = FALSE;
4099 ffeste_io_iostat_ = NULL_TREE;
4100 }
4101
4102 /* Now prescan, then convert, all the arguments. */
4103
4104 args
4105 = ffeste_io_inlist_ (errl || iostat,
4106 &info->inquire_spec[FFESTP_inquireixUNIT],
4107 &info->inquire_spec[FFESTP_inquireixFILE],
4108 &info->inquire_spec[FFESTP_inquireixEXIST],
4109 &info->inquire_spec[FFESTP_inquireixOPENED],
4110 &info->inquire_spec[FFESTP_inquireixNUMBER],
4111 &info->inquire_spec[FFESTP_inquireixNAMED],
4112 &info->inquire_spec[FFESTP_inquireixNAME],
4113 &info->inquire_spec[FFESTP_inquireixACCESS],
4114 &info->inquire_spec[FFESTP_inquireixSEQUENTIAL],
4115 &info->inquire_spec[FFESTP_inquireixDIRECT],
4116 &info->inquire_spec[FFESTP_inquireixFORM],
4117 &info->inquire_spec[FFESTP_inquireixFORMATTED],
4118 &info->inquire_spec[FFESTP_inquireixUNFORMATTED],
4119 &info->inquire_spec[FFESTP_inquireixRECL],
4120 &info->inquire_spec[FFESTP_inquireixNEXTREC],
4121 &info->inquire_spec[FFESTP_inquireixBLANK]);
4122
4123 /* Don't generate "if (iostat != 0) goto label;" if label is temp abort
4124 label, since we're gonna fall through to there anyway. */
4125
4126 ffeste_io_call_ (ffecom_call_gfrt (FFECOM_gfrtFINQU, args, NULL_TREE),
4127 ! ffeste_io_abort_is_temp_);
4128
4129 /* If we've got a temp label, generate its code here. */
4130
4131 if (ffeste_io_abort_is_temp_)
4132 {
4133 DECL_INITIAL (ffeste_io_abort_) = error_mark_node;
4134 emit_nop ();
4135 expand_label (ffeste_io_abort_);
4136
4137 assert (ffeste_io_err_ == NULL_TREE);
4138 }
4139
4140 ffeste_end_stmt_ ();
4141 }
4142
4143 /* INQUIRE(IOLENGTH=expr) statement -- start. */
4144
4145 void
4146 ffeste_R923B_start (ffestpInquireStmt *info UNUSED)
4147 {
4148 ffeste_check_start_ ();
4149
4150 assert ("INQUIRE(IOLENGTH=<var>) not implemented yet! ~~~" == NULL);
4151
4152 ffeste_emit_line_note_ ();
4153 }
4154
4155 /* INQUIRE(IOLENGTH=expr) statement -- I/O item. */
4156
4157 void
4158 ffeste_R923B_item (ffebld expr UNUSED)
4159 {
4160 ffeste_check_item_ ();
4161 }
4162
4163 /* INQUIRE(IOLENGTH=expr) statement -- end. */
4164
4165 void
4166 ffeste_R923B_finish ()
4167 {
4168 ffeste_check_finish_ ();
4169 }
4170
4171 /* ffeste_R1001 -- FORMAT statement
4172
4173 ffeste_R1001(format_list); */
4174
4175 void
4176 ffeste_R1001 (ffests s)
4177 {
4178 tree t;
4179 tree ttype;
4180 tree maxindex;
4181 tree var;
4182
4183 ffeste_check_simple_ ();
4184
4185 assert (ffeste_label_formatdef_ != NULL);
4186
4187 ffeste_emit_line_note_ ();
4188
4189 t = build_string (ffests_length (s), ffests_text (s));
4190
4191 TREE_TYPE (t)
4192 = build_type_variant (build_array_type
4193 (char_type_node,
4194 build_range_type (integer_type_node,
4195 integer_one_node,
4196 build_int_2 (ffests_length (s),
4197 0))),
4198 1, 0);
4199 TREE_CONSTANT (t) = 1;
4200 TREE_STATIC (t) = 1;
4201
4202 var = ffecom_lookup_label (ffeste_label_formatdef_);
4203 if ((var != NULL_TREE)
4204 && (TREE_CODE (var) == VAR_DECL))
4205 {
4206 DECL_INITIAL (var) = t;
4207 maxindex = build_int_2 (ffests_length (s) - 1, 0);
4208 ttype = TREE_TYPE (var);
4209 TYPE_DOMAIN (ttype) = build_range_type (integer_type_node,
4210 integer_zero_node,
4211 maxindex);
4212 if (!TREE_TYPE (maxindex))
4213 TREE_TYPE (maxindex) = TYPE_DOMAIN (ttype);
4214 layout_type (ttype);
4215 rest_of_decl_compilation (var, NULL, 1, 0);
4216 expand_decl (var);
4217 expand_decl_init (var);
4218 }
4219
4220 ffeste_label_formatdef_ = NULL;
4221 }
4222
4223 /* END PROGRAM. */
4224
4225 void
4226 ffeste_R1103 ()
4227 {
4228 }
4229
4230 /* END BLOCK DATA. */
4231
4232 void
4233 ffeste_R1112 ()
4234 {
4235 }
4236
4237 /* CALL statement. */
4238
4239 void
4240 ffeste_R1212 (ffebld expr)
4241 {
4242 ffebld args;
4243 ffebld arg;
4244 ffebld labels = NULL; /* First in list of LABTERs. */
4245 ffebld prevlabels = NULL;
4246 ffebld prevargs = NULL;
4247
4248 ffeste_check_simple_ ();
4249
4250 args = ffebld_right (expr);
4251
4252 ffeste_emit_line_note_ ();
4253
4254 /* Here we split the list at ffebld_right(expr) into two lists: one at
4255 ffebld_right(expr) consisting of all items that are not LABTERs, the
4256 other at labels consisting of all items that are LABTERs. Then, if
4257 the latter list is NULL, we have an ordinary call, else we have a call
4258 with alternate returns. */
4259
4260 for (args = ffebld_right (expr); args != NULL; args = ffebld_trail (args))
4261 {
4262 if (((arg = ffebld_head (args)) == NULL)
4263 || (ffebld_op (arg) != FFEBLD_opLABTER))
4264 {
4265 if (prevargs == NULL)
4266 {
4267 prevargs = args;
4268 ffebld_set_right (expr, args);
4269 }
4270 else
4271 {
4272 ffebld_set_trail (prevargs, args);
4273 prevargs = args;
4274 }
4275 }
4276 else
4277 {
4278 if (prevlabels == NULL)
4279 {
4280 prevlabels = labels = args;
4281 }
4282 else
4283 {
4284 ffebld_set_trail (prevlabels, args);
4285 prevlabels = args;
4286 }
4287 }
4288 }
4289 if (prevlabels == NULL)
4290 labels = NULL;
4291 else
4292 ffebld_set_trail (prevlabels, NULL);
4293 if (prevargs == NULL)
4294 ffebld_set_right (expr, NULL);
4295 else
4296 ffebld_set_trail (prevargs, NULL);
4297
4298 ffeste_start_stmt_ ();
4299
4300 /* No temporaries are actually needed at this level, but we go
4301 through the motions anyway, just to be sure in case they do
4302 get made. Temporaries needed for arguments should be in the
4303 scopes of inner blocks, and if clean-up actions are supported,
4304 such as CALL-ing an intrinsic that writes to an argument of one
4305 type when a variable of a different type is provided (requiring
4306 assignment to the variable from a temporary after the library
4307 routine returns), the clean-up must be done by the expression
4308 evaluator, generally, to handle alternate returns (which we hope
4309 won't ever be supported by intrinsics, but might be a similar
4310 issue, such as CALL-ing an F90-style subroutine with an INTERFACE
4311 block). That implies the expression evaluator will have to
4312 recognize the need for its own temporary anyway, meaning it'll
4313 construct a block within the one constructed here. */
4314
4315 ffecom_prepare_expr (expr);
4316
4317 ffecom_prepare_end ();
4318
4319 if (labels == NULL)
4320 expand_expr_stmt (ffecom_expr (expr));
4321 else
4322 {
4323 tree texpr;
4324 tree value;
4325 tree tlabel;
4326 int caseno;
4327 int pushok;
4328 tree duplicate;
4329 ffebld label;
4330
4331 texpr = ffecom_expr (expr);
4332 expand_start_case (0, texpr, TREE_TYPE (texpr), "CALL statement");
4333
4334 for (caseno = 1, label = labels;
4335 label != NULL;
4336 ++caseno, label = ffebld_trail (label))
4337 {
4338 value = build_int_2 (caseno, 0);
4339 tlabel = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
4340
4341 pushok = pushcase (value, convert, tlabel, &duplicate);
4342 assert (pushok == 0);
4343
4344 tlabel
4345 = ffecom_lookup_label (ffebld_labter (ffebld_head (label)));
4346 if ((tlabel == NULL_TREE)
4347 || (TREE_CODE (tlabel) == ERROR_MARK))
4348 continue;
4349 TREE_USED (tlabel) = 1;
4350 expand_goto (tlabel);
4351 }
4352
4353 expand_end_case (texpr);
4354 }
4355
4356 ffeste_end_stmt_ ();
4357 }
4358
4359 /* END FUNCTION. */
4360
4361 void
4362 ffeste_R1221 ()
4363 {
4364 }
4365
4366 /* END SUBROUTINE. */
4367
4368 void
4369 ffeste_R1225 ()
4370 {
4371 }
4372
4373 /* ENTRY statement. */
4374
4375 void
4376 ffeste_R1226 (ffesymbol entry)
4377 {
4378 tree label;
4379
4380 ffeste_check_simple_ ();
4381
4382 label = ffesymbol_hook (entry).length_tree;
4383
4384 ffeste_emit_line_note_ ();
4385
4386 if (label == error_mark_node)
4387 return;
4388
4389 DECL_INITIAL (label) = error_mark_node;
4390 emit_nop ();
4391 expand_label (label);
4392 }
4393
4394 /* RETURN statement. */
4395
4396 void
4397 ffeste_R1227 (ffestw block UNUSED, ffebld expr)
4398 {
4399 tree rtn;
4400
4401 ffeste_check_simple_ ();
4402
4403 ffeste_emit_line_note_ ();
4404
4405 ffeste_start_stmt_ ();
4406
4407 ffecom_prepare_return_expr (expr);
4408
4409 ffecom_prepare_end ();
4410
4411 rtn = ffecom_return_expr (expr);
4412
4413 if ((rtn == NULL_TREE)
4414 || (rtn == error_mark_node))
4415 expand_null_return ();
4416 else
4417 {
4418 tree result = DECL_RESULT (current_function_decl);
4419
4420 if ((result != error_mark_node)
4421 && (TREE_TYPE (result) != error_mark_node))
4422 expand_return (ffecom_modify (NULL_TREE,
4423 result,
4424 convert (TREE_TYPE (result),
4425 rtn)));
4426 else
4427 expand_null_return ();
4428 }
4429
4430 ffeste_end_stmt_ ();
4431 }
4432
4433 /* REWRITE statement -- start. */
4434
4435 #if FFESTR_VXT
4436 void
4437 ffeste_V018_start (ffestpRewriteStmt *info, ffestvFormat format)
4438 {
4439 ffeste_check_start_ ();
4440 }
4441
4442 /* REWRITE statement -- I/O item. */
4443
4444 void
4445 ffeste_V018_item (ffebld expr)
4446 {
4447 ffeste_check_item_ ();
4448 }
4449
4450 /* REWRITE statement -- end. */
4451
4452 void
4453 ffeste_V018_finish ()
4454 {
4455 ffeste_check_finish_ ();
4456 }
4457
4458 /* ACCEPT statement -- start. */
4459
4460 void
4461 ffeste_V019_start (ffestpAcceptStmt *info, ffestvFormat format)
4462 {
4463 ffeste_check_start_ ();
4464 }
4465
4466 /* ACCEPT statement -- I/O item. */
4467
4468 void
4469 ffeste_V019_item (ffebld expr)
4470 {
4471 ffeste_check_item_ ();
4472 }
4473
4474 /* ACCEPT statement -- end. */
4475
4476 void
4477 ffeste_V019_finish ()
4478 {
4479 ffeste_check_finish_ ();
4480 }
4481
4482 #endif
4483 /* TYPE statement -- start. */
4484
4485 void
4486 ffeste_V020_start (ffestpTypeStmt *info UNUSED,
4487 ffestvFormat format UNUSED)
4488 {
4489 ffeste_check_start_ ();
4490 }
4491
4492 /* TYPE statement -- I/O item. */
4493
4494 void
4495 ffeste_V020_item (ffebld expr UNUSED)
4496 {
4497 ffeste_check_item_ ();
4498 }
4499
4500 /* TYPE statement -- end. */
4501
4502 void
4503 ffeste_V020_finish ()
4504 {
4505 ffeste_check_finish_ ();
4506 }
4507
4508 /* DELETE statement. */
4509
4510 #if FFESTR_VXT
4511 void
4512 ffeste_V021 (ffestpDeleteStmt *info)
4513 {
4514 ffeste_check_simple_ ();
4515 }
4516
4517 /* UNLOCK statement. */
4518
4519 void
4520 ffeste_V022 (ffestpBeruStmt *info)
4521 {
4522 ffeste_check_simple_ ();
4523 }
4524
4525 /* ENCODE statement -- start. */
4526
4527 void
4528 ffeste_V023_start (ffestpVxtcodeStmt *info)
4529 {
4530 ffeste_check_start_ ();
4531 }
4532
4533 /* ENCODE statement -- I/O item. */
4534
4535 void
4536 ffeste_V023_item (ffebld expr)
4537 {
4538 ffeste_check_item_ ();
4539 }
4540
4541 /* ENCODE statement -- end. */
4542
4543 void
4544 ffeste_V023_finish ()
4545 {
4546 ffeste_check_finish_ ();
4547 }
4548
4549 /* DECODE statement -- start. */
4550
4551 void
4552 ffeste_V024_start (ffestpVxtcodeStmt *info)
4553 {
4554 ffeste_check_start_ ();
4555 }
4556
4557 /* DECODE statement -- I/O item. */
4558
4559 void
4560 ffeste_V024_item (ffebld expr)
4561 {
4562 ffeste_check_item_ ();
4563 }
4564
4565 /* DECODE statement -- end. */
4566
4567 void
4568 ffeste_V024_finish ()
4569 {
4570 ffeste_check_finish_ ();
4571 }
4572
4573 /* DEFINEFILE statement -- start. */
4574
4575 void
4576 ffeste_V025_start ()
4577 {
4578 ffeste_check_start_ ();
4579 }
4580
4581 /* DEFINE FILE statement -- item. */
4582
4583 void
4584 ffeste_V025_item (ffebld u, ffebld m, ffebld n, ffebld asv)
4585 {
4586 ffeste_check_item_ ();
4587 }
4588
4589 /* DEFINE FILE statement -- end. */
4590
4591 void
4592 ffeste_V025_finish ()
4593 {
4594 ffeste_check_finish_ ();
4595 }
4596
4597 /* FIND statement. */
4598
4599 void
4600 ffeste_V026 (ffestpFindStmt *info)
4601 {
4602 ffeste_check_simple_ ();
4603 }
4604
4605 #endif
4606
4607 #ifdef ENABLE_CHECKING
4608 void
4609 ffeste_terminate_2 (void)
4610 {
4611 assert (! ffeste_top_block_);
4612 }
4613 #endif
4614
4615 #include "gt-f-ste.h"
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