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* backtrace.c: Revert last two changes. Don't call mmap
[official-gcc.git] / gcc / fortran / trans-io.c
blob2626c4651e2d78702cb156983fff54b35de5a7d2
1 /* IO Code translation/library interface
2 Copyright (C) 2002-2018 Free Software Foundation, Inc.
3 Contributed by Paul Brook
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
10 version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "tree.h"
26 #include "gfortran.h"
27 #include "trans.h"
28 #include "stringpool.h"
29 #include "fold-const.h"
30 #include "stor-layout.h"
31 #include "trans-stmt.h"
32 #include "trans-array.h"
33 #include "trans-types.h"
34 #include "trans-const.h"
35 #include "options.h"
36
37 /* Members of the ioparm structure. */
38
39 enum ioparam_type
40 {
41 IOPARM_ptype_common,
42 IOPARM_ptype_open,
43 IOPARM_ptype_close,
44 IOPARM_ptype_filepos,
45 IOPARM_ptype_inquire,
46 IOPARM_ptype_dt,
47 IOPARM_ptype_wait,
48 IOPARM_ptype_num
49 };
50
51 enum iofield_type
52 {
53 IOPARM_type_int4,
54 IOPARM_type_intio,
55 IOPARM_type_pint4,
56 IOPARM_type_pintio,
57 IOPARM_type_pchar,
58 IOPARM_type_parray,
59 IOPARM_type_pad,
60 IOPARM_type_char1,
61 IOPARM_type_char2,
62 IOPARM_type_common,
63 IOPARM_type_num
64 };
65
66 typedef struct GTY(()) gfc_st_parameter_field {
67 const char *name;
68 unsigned int mask;
69 enum ioparam_type param_type;
70 enum iofield_type type;
71 tree field;
72 tree field_len;
73 }
74 gfc_st_parameter_field;
75
76 typedef struct GTY(()) gfc_st_parameter {
77 const char *name;
78 tree type;
79 }
80 gfc_st_parameter;
81
82 enum iofield
83 {
84 #define IOPARM(param_type, name, mask, type) IOPARM_##param_type##_##name,
85 #include "ioparm.def"
86 #undef IOPARM
87 IOPARM_field_num
88 };
89
90 static GTY(()) gfc_st_parameter st_parameter[] =
91 {
92 { "common", NULL },
93 { "open", NULL },
94 { "close", NULL },
95 { "filepos", NULL },
96 { "inquire", NULL },
97 { "dt", NULL },
98 { "wait", NULL }
99 };
100
101 static GTY(()) gfc_st_parameter_field st_parameter_field[] =
102 {
103 #define IOPARM(param_type, name, mask, type) \
104 { #name, mask, IOPARM_ptype_##param_type, IOPARM_type_##type, NULL, NULL },
105 #include "ioparm.def"
106 #undef IOPARM
107 { NULL, 0, (enum ioparam_type) 0, (enum iofield_type) 0, NULL, NULL }
108 };
109
110 /* Library I/O subroutines */
111
112 enum iocall
113 {
114 IOCALL_READ,
115 IOCALL_READ_DONE,
116 IOCALL_WRITE,
117 IOCALL_WRITE_DONE,
118 IOCALL_X_INTEGER,
119 IOCALL_X_INTEGER_WRITE,
120 IOCALL_X_LOGICAL,
121 IOCALL_X_LOGICAL_WRITE,
122 IOCALL_X_CHARACTER,
123 IOCALL_X_CHARACTER_WRITE,
124 IOCALL_X_CHARACTER_WIDE,
125 IOCALL_X_CHARACTER_WIDE_WRITE,
126 IOCALL_X_REAL,
127 IOCALL_X_REAL_WRITE,
128 IOCALL_X_COMPLEX,
129 IOCALL_X_COMPLEX_WRITE,
130 IOCALL_X_REAL128,
131 IOCALL_X_REAL128_WRITE,
132 IOCALL_X_COMPLEX128,
133 IOCALL_X_COMPLEX128_WRITE,
134 IOCALL_X_ARRAY,
135 IOCALL_X_ARRAY_WRITE,
136 IOCALL_X_DERIVED,
137 IOCALL_OPEN,
138 IOCALL_CLOSE,
139 IOCALL_INQUIRE,
140 IOCALL_IOLENGTH,
141 IOCALL_IOLENGTH_DONE,
142 IOCALL_REWIND,
143 IOCALL_BACKSPACE,
144 IOCALL_ENDFILE,
145 IOCALL_FLUSH,
146 IOCALL_SET_NML_VAL,
147 IOCALL_SET_NML_DTIO_VAL,
148 IOCALL_SET_NML_VAL_DIM,
149 IOCALL_WAIT,
150 IOCALL_NUM
151 };
152
153 static GTY(()) tree iocall[IOCALL_NUM];
154
155 /* Variable for keeping track of what the last data transfer statement
156 was. Used for deciding which subroutine to call when the data
157 transfer is complete. */
158 static enum { READ, WRITE, IOLENGTH } last_dt;
159
160 /* The data transfer parameter block that should be shared by all
161 data transfer calls belonging to the same read/write/iolength. */
162 static GTY(()) tree dt_parm;
163 static stmtblock_t *dt_post_end_block;
164
165 static void
166 gfc_build_st_parameter (enum ioparam_type ptype, tree *types)
167 {
168 unsigned int type;
169 gfc_st_parameter_field *p;
170 char name[64];
171 size_t len;
172 tree t = make_node (RECORD_TYPE);
173 tree *chain = NULL;
174
175 len = strlen (st_parameter[ptype].name);
176 gcc_assert (len <= sizeof (name) - sizeof ("__st_parameter_"));
177 memcpy (name, "__st_parameter_", sizeof ("__st_parameter_"));
178 memcpy (name + sizeof ("__st_parameter_") - 1, st_parameter[ptype].name,
179 len + 1);
180 TYPE_NAME (t) = get_identifier (name);
181
182 for (type = 0, p = st_parameter_field; type < IOPARM_field_num; type++, p++)
183 if (p->param_type == ptype)
184 switch (p->type)
185 {
186 case IOPARM_type_int4:
187 case IOPARM_type_intio:
188 case IOPARM_type_pint4:
189 case IOPARM_type_pintio:
190 case IOPARM_type_parray:
191 case IOPARM_type_pchar:
192 case IOPARM_type_pad:
193 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
194 types[p->type], &chain);
195 break;
196 case IOPARM_type_char1:
197 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
198 pchar_type_node, &chain);
199 /* FALLTHROUGH */
200 case IOPARM_type_char2:
201 len = strlen (p->name);
202 gcc_assert (len <= sizeof (name) - sizeof ("_len"));
203 memcpy (name, p->name, len);
204 memcpy (name + len, "_len", sizeof ("_len"));
205 p->field_len = gfc_add_field_to_struct (t, get_identifier (name),
206 gfc_charlen_type_node,
207 &chain);
208 if (p->type == IOPARM_type_char2)
209 p->field = gfc_add_field_to_struct (t, get_identifier (p->name),
210 pchar_type_node, &chain);
211 break;
212 case IOPARM_type_common:
213 p->field
214 = gfc_add_field_to_struct (t,
215 get_identifier (p->name),
216 st_parameter[IOPARM_ptype_common].type,
217 &chain);
218 break;
219 case IOPARM_type_num:
220 gcc_unreachable ();
221 }
222
223 /* -Wpadded warnings on these artificially created structures are not
224 helpful; suppress them. */
225 int save_warn_padded = warn_padded;
226 warn_padded = 0;
227 gfc_finish_type (t);
228 warn_padded = save_warn_padded;
229 st_parameter[ptype].type = t;
230 }
231
232
233 /* Build code to test an error condition and call generate_error if needed.
234 Note: This builds calls to generate_error in the runtime library function.
235 The function generate_error is dependent on certain parameters in the
236 st_parameter_common flags to be set. (See libgfortran/runtime/error.c)
237 Therefore, the code to set these flags must be generated before
238 this function is used. */
239
240 static void
241 gfc_trans_io_runtime_check (bool has_iostat, tree cond, tree var,
242 int error_code, const char * msgid,
243 stmtblock_t * pblock)
244 {
245 stmtblock_t block;
246 tree body;
247 tree tmp;
248 tree arg1, arg2, arg3;
249 char *message;
250
251 if (integer_zerop (cond))
252 return;
253
254 /* The code to generate the error. */
255 gfc_start_block (&block);
256
257 if (has_iostat)
258 gfc_add_expr_to_block (&block, build_predict_expr (PRED_FORTRAN_FAIL_IO,
259 NOT_TAKEN));
260 else
261 gfc_add_expr_to_block (&block, build_predict_expr (PRED_NORETURN,
262 NOT_TAKEN));
263
264 arg1 = gfc_build_addr_expr (NULL_TREE, var);
265
266 arg2 = build_int_cst (integer_type_node, error_code),
267
268 message = xasprintf ("%s", _(msgid));
269 arg3 = gfc_build_addr_expr (pchar_type_node,
270 gfc_build_localized_cstring_const (message));
271 free (message);
272
273 tmp = build_call_expr_loc (input_location,
274 gfor_fndecl_generate_error, 3, arg1, arg2, arg3);
275
276 gfc_add_expr_to_block (&block, tmp);
277
278 body = gfc_finish_block (&block);
279
280 if (integer_onep (cond))
281 {
282 gfc_add_expr_to_block (pblock, body);
283 }
284 else
285 {
286 tmp = build3_v (COND_EXPR, cond, body, build_empty_stmt (input_location));
287 gfc_add_expr_to_block (pblock, tmp);
288 }
289 }
290
291
292 /* Create function decls for IO library functions. */
293
294 void
295 gfc_build_io_library_fndecls (void)
296 {
297 tree types[IOPARM_type_num], pad_idx, gfc_int4_type_node;
298 tree gfc_intio_type_node;
299 tree parm_type, dt_parm_type;
300 HOST_WIDE_INT pad_size;
301 unsigned int ptype;
302
303 types[IOPARM_type_int4] = gfc_int4_type_node = gfc_get_int_type (4);
304 types[IOPARM_type_intio] = gfc_intio_type_node
305 = gfc_get_int_type (gfc_intio_kind);
306 types[IOPARM_type_pint4] = build_pointer_type (gfc_int4_type_node);
307 types[IOPARM_type_pintio]
308 = build_pointer_type (gfc_intio_type_node);
309 types[IOPARM_type_parray] = pchar_type_node;
310 types[IOPARM_type_pchar] = pchar_type_node;
311 pad_size = 16 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (pchar_type_node));
312 pad_size += 32 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (integer_type_node));
313 pad_idx = build_index_type (size_int (pad_size - 1));
314 types[IOPARM_type_pad] = build_array_type (char_type_node, pad_idx);
315
316 /* pad actually contains pointers and integers so it needs to have an
317 alignment that is at least as large as the needed alignment for those
318 types. See the st_parameter_dt structure in libgfortran/io/io.h for
319 what really goes into this space. */
320 SET_TYPE_ALIGN (types[IOPARM_type_pad], MAX (TYPE_ALIGN (pchar_type_node),
321 TYPE_ALIGN (gfc_get_int_type (gfc_intio_kind))));
322
323 for (ptype = IOPARM_ptype_common; ptype < IOPARM_ptype_num; ptype++)
324 gfc_build_st_parameter ((enum ioparam_type) ptype, types);
325
326 /* Define the transfer functions. */
327
328 dt_parm_type = build_pointer_type (st_parameter[IOPARM_ptype_dt].type);
329
330 iocall[IOCALL_X_INTEGER] = gfc_build_library_function_decl_with_spec (
331 get_identifier (PREFIX("transfer_integer")), ".wW",
332 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
333
334 iocall[IOCALL_X_INTEGER_WRITE] = gfc_build_library_function_decl_with_spec (
335 get_identifier (PREFIX("transfer_integer_write")), ".wR",
336 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
337
338 iocall[IOCALL_X_LOGICAL] = gfc_build_library_function_decl_with_spec (
339 get_identifier (PREFIX("transfer_logical")), ".wW",
340 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
341
342 iocall[IOCALL_X_LOGICAL_WRITE] = gfc_build_library_function_decl_with_spec (
343 get_identifier (PREFIX("transfer_logical_write")), ".wR",
344 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
345
346 iocall[IOCALL_X_CHARACTER] = gfc_build_library_function_decl_with_spec (
347 get_identifier (PREFIX("transfer_character")), ".wW",
348 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_charlen_type_node);
349
350 iocall[IOCALL_X_CHARACTER_WRITE] = gfc_build_library_function_decl_with_spec (
351 get_identifier (PREFIX("transfer_character_write")), ".wR",
352 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_charlen_type_node);
353
354 iocall[IOCALL_X_CHARACTER_WIDE] = gfc_build_library_function_decl_with_spec (
355 get_identifier (PREFIX("transfer_character_wide")), ".wW",
356 void_type_node, 4, dt_parm_type, pvoid_type_node,
357 gfc_charlen_type_node, gfc_int4_type_node);
358
359 iocall[IOCALL_X_CHARACTER_WIDE_WRITE] =
360 gfc_build_library_function_decl_with_spec (
361 get_identifier (PREFIX("transfer_character_wide_write")), ".wR",
362 void_type_node, 4, dt_parm_type, pvoid_type_node,
363 gfc_charlen_type_node, gfc_int4_type_node);
364
365 iocall[IOCALL_X_REAL] = gfc_build_library_function_decl_with_spec (
366 get_identifier (PREFIX("transfer_real")), ".wW",
367 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
368
369 iocall[IOCALL_X_REAL_WRITE] = gfc_build_library_function_decl_with_spec (
370 get_identifier (PREFIX("transfer_real_write")), ".wR",
371 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
372
373 iocall[IOCALL_X_COMPLEX] = gfc_build_library_function_decl_with_spec (
374 get_identifier (PREFIX("transfer_complex")), ".wW",
375 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
376
377 iocall[IOCALL_X_COMPLEX_WRITE] = gfc_build_library_function_decl_with_spec (
378 get_identifier (PREFIX("transfer_complex_write")), ".wR",
379 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
380
381 /* Version for __float128. */
382 iocall[IOCALL_X_REAL128] = gfc_build_library_function_decl_with_spec (
383 get_identifier (PREFIX("transfer_real128")), ".wW",
384 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
385
386 iocall[IOCALL_X_REAL128_WRITE] = gfc_build_library_function_decl_with_spec (
387 get_identifier (PREFIX("transfer_real128_write")), ".wR",
388 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
389
390 iocall[IOCALL_X_COMPLEX128] = gfc_build_library_function_decl_with_spec (
391 get_identifier (PREFIX("transfer_complex128")), ".wW",
392 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
393
394 iocall[IOCALL_X_COMPLEX128_WRITE] = gfc_build_library_function_decl_with_spec (
395 get_identifier (PREFIX("transfer_complex128_write")), ".wR",
396 void_type_node, 3, dt_parm_type, pvoid_type_node, gfc_int4_type_node);
397
398 iocall[IOCALL_X_ARRAY] = gfc_build_library_function_decl_with_spec (
399 get_identifier (PREFIX("transfer_array")), ".ww",
400 void_type_node, 4, dt_parm_type, pvoid_type_node,
401 integer_type_node, gfc_charlen_type_node);
402
403 iocall[IOCALL_X_ARRAY_WRITE] = gfc_build_library_function_decl_with_spec (
404 get_identifier (PREFIX("transfer_array_write")), ".wr",
405 void_type_node, 4, dt_parm_type, pvoid_type_node,
406 integer_type_node, gfc_charlen_type_node);
407
408 iocall[IOCALL_X_DERIVED] = gfc_build_library_function_decl_with_spec (
409 get_identifier (PREFIX("transfer_derived")), ".wrR",
410 void_type_node, 2, dt_parm_type, pvoid_type_node, pchar_type_node);
411
412 /* Library entry points */
413
414 iocall[IOCALL_READ] = gfc_build_library_function_decl_with_spec (
415 get_identifier (PREFIX("st_read")), ".w",
416 void_type_node, 1, dt_parm_type);
417
418 iocall[IOCALL_WRITE] = gfc_build_library_function_decl_with_spec (
419 get_identifier (PREFIX("st_write")), ".w",
420 void_type_node, 1, dt_parm_type);
421
422 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_open].type);
423 iocall[IOCALL_OPEN] = gfc_build_library_function_decl_with_spec (
424 get_identifier (PREFIX("st_open")), ".w",
425 void_type_node, 1, parm_type);
426
427 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_close].type);
428 iocall[IOCALL_CLOSE] = gfc_build_library_function_decl_with_spec (
429 get_identifier (PREFIX("st_close")), ".w",
430 void_type_node, 1, parm_type);
431
432 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_inquire].type);
433 iocall[IOCALL_INQUIRE] = gfc_build_library_function_decl_with_spec (
434 get_identifier (PREFIX("st_inquire")), ".w",
435 void_type_node, 1, parm_type);
436
437 iocall[IOCALL_IOLENGTH] = gfc_build_library_function_decl_with_spec(
438 get_identifier (PREFIX("st_iolength")), ".w",
439 void_type_node, 1, dt_parm_type);
440
441 /* TODO: Change when asynchronous I/O is implemented. */
442 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_wait].type);
443 iocall[IOCALL_WAIT] = gfc_build_library_function_decl_with_spec (
444 get_identifier (PREFIX("st_wait")), ".X",
445 void_type_node, 1, parm_type);
446
447 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_filepos].type);
448 iocall[IOCALL_REWIND] = gfc_build_library_function_decl_with_spec (
449 get_identifier (PREFIX("st_rewind")), ".w",
450 void_type_node, 1, parm_type);
451
452 iocall[IOCALL_BACKSPACE] = gfc_build_library_function_decl_with_spec (
453 get_identifier (PREFIX("st_backspace")), ".w",
454 void_type_node, 1, parm_type);
455
456 iocall[IOCALL_ENDFILE] = gfc_build_library_function_decl_with_spec (
457 get_identifier (PREFIX("st_endfile")), ".w",
458 void_type_node, 1, parm_type);
459
460 iocall[IOCALL_FLUSH] = gfc_build_library_function_decl_with_spec (
461 get_identifier (PREFIX("st_flush")), ".w",
462 void_type_node, 1, parm_type);
463
464 /* Library helpers */
465
466 iocall[IOCALL_READ_DONE] = gfc_build_library_function_decl_with_spec (
467 get_identifier (PREFIX("st_read_done")), ".w",
468 void_type_node, 1, dt_parm_type);
469
470 iocall[IOCALL_WRITE_DONE] = gfc_build_library_function_decl_with_spec (
471 get_identifier (PREFIX("st_write_done")), ".w",
472 void_type_node, 1, dt_parm_type);
473
474 iocall[IOCALL_IOLENGTH_DONE] = gfc_build_library_function_decl_with_spec (
475 get_identifier (PREFIX("st_iolength_done")), ".w",
476 void_type_node, 1, dt_parm_type);
477
478 iocall[IOCALL_SET_NML_VAL] = gfc_build_library_function_decl_with_spec (
479 get_identifier (PREFIX("st_set_nml_var")), ".w.R",
480 void_type_node, 6, dt_parm_type, pvoid_type_node, pvoid_type_node,
481 gfc_int4_type_node, gfc_charlen_type_node, get_dtype_type_node());
482
483 iocall[IOCALL_SET_NML_DTIO_VAL] = gfc_build_library_function_decl_with_spec (
484 get_identifier (PREFIX("st_set_nml_dtio_var")), ".w.R",
485 void_type_node, 8, dt_parm_type, pvoid_type_node, pvoid_type_node,
486 gfc_int4_type_node, gfc_charlen_type_node, get_dtype_type_node(),
487 pvoid_type_node, pvoid_type_node);
488
489 iocall[IOCALL_SET_NML_VAL_DIM] = gfc_build_library_function_decl_with_spec (
490 get_identifier (PREFIX("st_set_nml_var_dim")), ".w",
491 void_type_node, 5, dt_parm_type, gfc_int4_type_node,
492 gfc_array_index_type, gfc_array_index_type, gfc_array_index_type);
493 }
494
495
496 static void
497 set_parameter_tree (stmtblock_t *block, tree var, enum iofield type, tree value)
498 {
499 tree tmp;
500 gfc_st_parameter_field *p = &st_parameter_field[type];
501
502 if (p->param_type == IOPARM_ptype_common)
503 var = fold_build3_loc (input_location, COMPONENT_REF,
504 st_parameter[IOPARM_ptype_common].type,
505 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
506 tmp = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
507 var, p->field, NULL_TREE);
508 gfc_add_modify (block, tmp, value);
509 }
510
511
512 /* Generate code to store an integer constant into the
513 st_parameter_XXX structure. */
514
515 static unsigned int
516 set_parameter_const (stmtblock_t *block, tree var, enum iofield type,
517 unsigned int val)
518 {
519 gfc_st_parameter_field *p = &st_parameter_field[type];
520
521 set_parameter_tree (block, var, type,
522 build_int_cst (TREE_TYPE (p->field), val));
523 return p->mask;
524 }
525
526
527 /* Generate code to store a non-string I/O parameter into the
528 st_parameter_XXX structure. This is a pass by value. */
529
530 static unsigned int
531 set_parameter_value (stmtblock_t *block, tree var, enum iofield type,
532 gfc_expr *e)
533 {
534 gfc_se se;
535 tree tmp;
536 gfc_st_parameter_field *p = &st_parameter_field[type];
537 tree dest_type = TREE_TYPE (p->field);
538
539 gfc_init_se (&se, NULL);
540 gfc_conv_expr_val (&se, e);
541
542 se.expr = convert (dest_type, se.expr);
543 gfc_add_block_to_block (block, &se.pre);
544
545 if (p->param_type == IOPARM_ptype_common)
546 var = fold_build3_loc (input_location, COMPONENT_REF,
547 st_parameter[IOPARM_ptype_common].type,
548 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
549
550 tmp = fold_build3_loc (input_location, COMPONENT_REF, dest_type, var,
551 p->field, NULL_TREE);
552 gfc_add_modify (block, tmp, se.expr);
553 return p->mask;
554 }
555
556
557 /* Similar to set_parameter_value except generate runtime
558 error checks. */
559
560 static unsigned int
561 set_parameter_value_chk (stmtblock_t *block, bool has_iostat, tree var,
562 enum iofield type, gfc_expr *e)
563 {
564 gfc_se se;
565 tree tmp;
566 gfc_st_parameter_field *p = &st_parameter_field[type];
567 tree dest_type = TREE_TYPE (p->field);
568
569 gfc_init_se (&se, NULL);
570 gfc_conv_expr_val (&se, e);
571
572 /* If we're storing a UNIT number, we need to check it first. */
573 if (type == IOPARM_common_unit && e->ts.kind > 4)
574 {
575 tree cond, val;
576 int i;
577
578 /* Don't evaluate the UNIT number multiple times. */
579 se.expr = gfc_evaluate_now (se.expr, &se.pre);
580
581 /* UNIT numbers should be greater than the min. */
582 i = gfc_validate_kind (BT_INTEGER, 4, false);
583 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].pedantic_min_int, 4);
584 cond = fold_build2_loc (input_location, LT_EXPR, logical_type_node,
585 se.expr,
586 fold_convert (TREE_TYPE (se.expr), val));
587 gfc_trans_io_runtime_check (has_iostat, cond, var, LIBERROR_BAD_UNIT,
588 "Unit number in I/O statement too small",
589 &se.pre);
590
591 /* UNIT numbers should be less than the max. */
592 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
593 cond = fold_build2_loc (input_location, GT_EXPR, logical_type_node,
594 se.expr,
595 fold_convert (TREE_TYPE (se.expr), val));
596 gfc_trans_io_runtime_check (has_iostat, cond, var, LIBERROR_BAD_UNIT,
597 "Unit number in I/O statement too large",
598 &se.pre);
599 }
600
601 se.expr = convert (dest_type, se.expr);
602 gfc_add_block_to_block (block, &se.pre);
603
604 if (p->param_type == IOPARM_ptype_common)
605 var = fold_build3_loc (input_location, COMPONENT_REF,
606 st_parameter[IOPARM_ptype_common].type,
607 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
608
609 tmp = fold_build3_loc (input_location, COMPONENT_REF, dest_type, var,
610 p->field, NULL_TREE);
611 gfc_add_modify (block, tmp, se.expr);
612 return p->mask;
613 }
614
615
616 /* Build code to check the unit range if KIND=8 is used. Similar to
617 set_parameter_value_chk but we do not generate error calls for
618 inquire statements. */
619
620 static unsigned int
621 set_parameter_value_inquire (stmtblock_t *block, tree var,
622 enum iofield type, gfc_expr *e)
623 {
624 gfc_se se;
625 gfc_st_parameter_field *p = &st_parameter_field[type];
626 tree dest_type = TREE_TYPE (p->field);
627
628 gfc_init_se (&se, NULL);
629 gfc_conv_expr_val (&se, e);
630
631 /* If we're inquiring on a UNIT number, we need to check to make
632 sure it exists for larger than kind = 4. */
633 if (type == IOPARM_common_unit && e->ts.kind > 4)
634 {
635 stmtblock_t newblock;
636 tree cond1, cond2, cond3, val, body;
637 int i;
638
639 /* Don't evaluate the UNIT number multiple times. */
640 se.expr = gfc_evaluate_now (se.expr, &se.pre);
641
642 /* UNIT numbers should be greater than the min. */
643 i = gfc_validate_kind (BT_INTEGER, 4, false);
644 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].pedantic_min_int, 4);
645 cond1 = build2_loc (input_location, LT_EXPR, logical_type_node,
646 se.expr,
647 fold_convert (TREE_TYPE (se.expr), val));
648 /* UNIT numbers should be less than the max. */
649 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
650 cond2 = build2_loc (input_location, GT_EXPR, logical_type_node,
651 se.expr,
652 fold_convert (TREE_TYPE (se.expr), val));
653 cond3 = build2_loc (input_location, TRUTH_OR_EXPR,
654 logical_type_node, cond1, cond2);
655
656 gfc_start_block (&newblock);
657
658 /* The unit number GFC_INVALID_UNIT is reserved. No units can
659 ever have this value. It is used here to signal to the
660 runtime library that the inquire unit number is outside the
661 allowable range and so cannot exist. It is needed when
662 -fdefault-integer-8 is used. */
663 set_parameter_const (&newblock, var, IOPARM_common_unit,
664 GFC_INVALID_UNIT);
665
666 body = gfc_finish_block (&newblock);
667
668 cond3 = gfc_unlikely (cond3, PRED_FORTRAN_FAIL_IO);
669 var = build3_v (COND_EXPR, cond3, body, build_empty_stmt (input_location));
670 gfc_add_expr_to_block (&se.pre, var);
671 }
672
673 se.expr = convert (dest_type, se.expr);
674 gfc_add_block_to_block (block, &se.pre);
675
676 return p->mask;
677 }
678
679
680 /* Generate code to store a non-string I/O parameter into the
681 st_parameter_XXX structure. This is pass by reference. */
682
683 static unsigned int
684 set_parameter_ref (stmtblock_t *block, stmtblock_t *postblock,
685 tree var, enum iofield type, gfc_expr *e)
686 {
687 gfc_se se;
688 tree tmp, addr;
689 gfc_st_parameter_field *p = &st_parameter_field[type];
690
691 gcc_assert (e->ts.type == BT_INTEGER || e->ts.type == BT_LOGICAL);
692 gfc_init_se (&se, NULL);
693 gfc_conv_expr_lhs (&se, e);
694
695 gfc_add_block_to_block (block, &se.pre);
696
697 if (TYPE_MODE (TREE_TYPE (se.expr))
698 == TYPE_MODE (TREE_TYPE (TREE_TYPE (p->field))))
699 {
700 addr = convert (TREE_TYPE (p->field), gfc_build_addr_expr (NULL_TREE, se.expr));
701
702 /* If this is for the iostat variable initialize the
703 user variable to LIBERROR_OK which is zero. */
704 if (type == IOPARM_common_iostat)
705 gfc_add_modify (block, se.expr,
706 build_int_cst (TREE_TYPE (se.expr), LIBERROR_OK));
707 }
708 else
709 {
710 /* The type used by the library has different size
711 from the type of the variable supplied by the user.
712 Need to use a temporary. */
713 tree tmpvar = gfc_create_var (TREE_TYPE (TREE_TYPE (p->field)),
714 st_parameter_field[type].name);
715
716 /* If this is for the iostat variable, initialize the
717 user variable to LIBERROR_OK which is zero. */
718 if (type == IOPARM_common_iostat)
719 gfc_add_modify (block, tmpvar,
720 build_int_cst (TREE_TYPE (tmpvar), LIBERROR_OK));
721
722 addr = gfc_build_addr_expr (NULL_TREE, tmpvar);
723 /* After the I/O operation, we set the variable from the temporary. */
724 tmp = convert (TREE_TYPE (se.expr), tmpvar);
725 gfc_add_modify (postblock, se.expr, tmp);
726 }
727
728 set_parameter_tree (block, var, type, addr);
729 return p->mask;
730 }
731
732 /* Given an array expr, find its address and length to get a string. If the
733 array is full, the string's address is the address of array's first element
734 and the length is the size of the whole array. If it is an element, the
735 string's address is the element's address and the length is the rest size of
736 the array. */
737
738 static void
739 gfc_convert_array_to_string (gfc_se * se, gfc_expr * e)
740 {
741 tree size;
742
743 if (e->rank == 0)
744 {
745 tree type, array, tmp;
746 gfc_symbol *sym;
747 int rank;
748
749 /* If it is an element, we need its address and size of the rest. */
750 gcc_assert (e->expr_type == EXPR_VARIABLE);
751 gcc_assert (e->ref->u.ar.type == AR_ELEMENT);
752 sym = e->symtree->n.sym;
753 rank = sym->as->rank - 1;
754 gfc_conv_expr (se, e);
755
756 array = sym->backend_decl;
757 type = TREE_TYPE (array);
758
759 if (GFC_ARRAY_TYPE_P (type))
760 size = GFC_TYPE_ARRAY_SIZE (type);
761 else
762 {
763 gcc_assert (GFC_DESCRIPTOR_TYPE_P (type));
764 size = gfc_conv_array_stride (array, rank);
765 tmp = fold_build2_loc (input_location, MINUS_EXPR,
766 gfc_array_index_type,
767 gfc_conv_array_ubound (array, rank),
768 gfc_conv_array_lbound (array, rank));
769 tmp = fold_build2_loc (input_location, PLUS_EXPR,
770 gfc_array_index_type, tmp,
771 gfc_index_one_node);
772 size = fold_build2_loc (input_location, MULT_EXPR,
773 gfc_array_index_type, tmp, size);
774 }
775 gcc_assert (size);
776
777 size = fold_build2_loc (input_location, MINUS_EXPR,
778 gfc_array_index_type, size,
779 TREE_OPERAND (se->expr, 1));
780 se->expr = gfc_build_addr_expr (NULL_TREE, se->expr);
781 tmp = TYPE_SIZE_UNIT (gfc_get_element_type (type));
782 size = fold_build2_loc (input_location, MULT_EXPR,
783 gfc_array_index_type, size,
784 fold_convert (gfc_array_index_type, tmp));
785 se->string_length = fold_convert (gfc_charlen_type_node, size);
786 return;
787 }
788
789 gfc_conv_array_parameter (se, e, true, NULL, NULL, &size);
790 se->string_length = fold_convert (gfc_charlen_type_node, size);
791 }
792
793
794 /* Generate code to store a string and its length into the
795 st_parameter_XXX structure. */
796
797 static unsigned int
798 set_string (stmtblock_t * block, stmtblock_t * postblock, tree var,
799 enum iofield type, gfc_expr * e)
800 {
801 gfc_se se;
802 tree tmp;
803 tree io;
804 tree len;
805 gfc_st_parameter_field *p = &st_parameter_field[type];
806
807 gfc_init_se (&se, NULL);
808
809 if (p->param_type == IOPARM_ptype_common)
810 var = fold_build3_loc (input_location, COMPONENT_REF,
811 st_parameter[IOPARM_ptype_common].type,
812 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
813 io = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
814 var, p->field, NULL_TREE);
815 len = fold_build3_loc (input_location, COMPONENT_REF,
816 TREE_TYPE (p->field_len),
817 var, p->field_len, NULL_TREE);
818
819 /* Integer variable assigned a format label. */
820 if (e->ts.type == BT_INTEGER
821 && e->rank == 0
822 && e->symtree->n.sym->attr.assign == 1)
823 {
824 char * msg;
825 tree cond;
826
827 gfc_conv_label_variable (&se, e);
828 tmp = GFC_DECL_STRING_LEN (se.expr);
829 cond = fold_build2_loc (input_location, LT_EXPR, logical_type_node,
830 tmp, build_int_cst (TREE_TYPE (tmp), 0));
831
832 msg = xasprintf ("Label assigned to variable '%s' (%%ld) is not a format "
833 "label", e->symtree->name);
834 gfc_trans_runtime_check (true, false, cond, &se.pre, &e->where, msg,
835 fold_convert (long_integer_type_node, tmp));
836 free (msg);
837
838 gfc_add_modify (&se.pre, io,
839 fold_convert (TREE_TYPE (io), GFC_DECL_ASSIGN_ADDR (se.expr)));
840 gfc_add_modify (&se.pre, len, GFC_DECL_STRING_LEN (se.expr));
841 }
842 else
843 {
844 /* General character. */
845 if (e->ts.type == BT_CHARACTER && e->rank == 0)
846 gfc_conv_expr (&se, e);
847 /* Array assigned Hollerith constant or character array. */
848 else if (e->rank > 0 || (e->symtree && e->symtree->n.sym->as->rank > 0))
849 gfc_convert_array_to_string (&se, e);
850 else
851 gcc_unreachable ();
852
853 gfc_conv_string_parameter (&se);
854 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), se.expr));
855 gfc_add_modify (&se.pre, len, fold_convert (TREE_TYPE (len),
856 se.string_length));
857 }
858
859 gfc_add_block_to_block (block, &se.pre);
860 gfc_add_block_to_block (postblock, &se.post);
861 return p->mask;
862 }
863
864
865 /* Generate code to store the character (array) and the character length
866 for an internal unit. */
867
868 static unsigned int
869 set_internal_unit (stmtblock_t * block, stmtblock_t * post_block,
870 tree var, gfc_expr * e)
871 {
872 gfc_se se;
873 tree io;
874 tree len;
875 tree desc;
876 tree tmp;
877 gfc_st_parameter_field *p;
878 unsigned int mask;
879
880 gfc_init_se (&se, NULL);
881
882 p = &st_parameter_field[IOPARM_dt_internal_unit];
883 mask = p->mask;
884 io = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
885 var, p->field, NULL_TREE);
886 len = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field_len),
887 var, p->field_len, NULL_TREE);
888 p = &st_parameter_field[IOPARM_dt_internal_unit_desc];
889 desc = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
890 var, p->field, NULL_TREE);
891
892 gcc_assert (e->ts.type == BT_CHARACTER);
893
894 /* Character scalars. */
895 if (e->rank == 0)
896 {
897 gfc_conv_expr (&se, e);
898 gfc_conv_string_parameter (&se);
899 tmp = se.expr;
900 se.expr = build_int_cst (pchar_type_node, 0);
901 }
902
903 /* Character array. */
904 else if (e->rank > 0)
905 {
906 if (is_subref_array (e))
907 {
908 /* Use a temporary for components of arrays of derived types
909 or substring array references. */
910 gfc_conv_subref_array_arg (&se, e, 0,
911 last_dt == READ ? INTENT_IN : INTENT_OUT, false);
912 tmp = build_fold_indirect_ref_loc (input_location,
913 se.expr);
914 se.expr = gfc_build_addr_expr (pchar_type_node, tmp);
915 tmp = gfc_conv_descriptor_data_get (tmp);
916 }
917 else
918 {
919 /* Return the data pointer and rank from the descriptor. */
920 gfc_conv_expr_descriptor (&se, e);
921 tmp = gfc_conv_descriptor_data_get (se.expr);
922 se.expr = gfc_build_addr_expr (pchar_type_node, se.expr);
923 }
924 }
925 else
926 gcc_unreachable ();
927
928 /* The cast is needed for character substrings and the descriptor
929 data. */
930 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), tmp));
931 gfc_add_modify (&se.pre, len,
932 fold_convert (TREE_TYPE (len), se.string_length));
933 gfc_add_modify (&se.pre, desc, se.expr);
934
935 gfc_add_block_to_block (block, &se.pre);
936 gfc_add_block_to_block (post_block, &se.post);
937 return mask;
938 }
939
940 /* Add a case to a IO-result switch. */
941
942 static void
943 add_case (int label_value, gfc_st_label * label, stmtblock_t * body)
944 {
945 tree tmp, value;
946
947 if (label == NULL)
948 return; /* No label, no case */
949
950 value = build_int_cst (integer_type_node, label_value);
951
952 /* Make a backend label for this case. */
953 tmp = gfc_build_label_decl (NULL_TREE);
954
955 /* And the case itself. */
956 tmp = build_case_label (value, NULL_TREE, tmp);
957 gfc_add_expr_to_block (body, tmp);
958
959 /* Jump to the label. */
960 tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label));
961 gfc_add_expr_to_block (body, tmp);
962 }
963
964
965 /* Generate a switch statement that branches to the correct I/O
966 result label. The last statement of an I/O call stores the
967 result into a variable because there is often cleanup that
968 must be done before the switch, so a temporary would have to
969 be created anyway. */
970
971 static void
972 io_result (stmtblock_t * block, tree var, gfc_st_label * err_label,
973 gfc_st_label * end_label, gfc_st_label * eor_label)
974 {
975 stmtblock_t body;
976 tree tmp, rc;
977 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags];
978
979 /* If no labels are specified, ignore the result instead
980 of building an empty switch. */
981 if (err_label == NULL
982 && end_label == NULL
983 && eor_label == NULL)
984 return;
985
986 /* Build a switch statement. */
987 gfc_start_block (&body);
988
989 /* The label values here must be the same as the values
990 in the library_return enum in the runtime library */
991 add_case (1, err_label, &body);
992 add_case (2, end_label, &body);
993 add_case (3, eor_label, &body);
994
995 tmp = gfc_finish_block (&body);
996
997 var = fold_build3_loc (input_location, COMPONENT_REF,
998 st_parameter[IOPARM_ptype_common].type,
999 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
1000 rc = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (p->field),
1001 var, p->field, NULL_TREE);
1002 rc = fold_build2_loc (input_location, BIT_AND_EXPR, TREE_TYPE (rc),
1003 rc, build_int_cst (TREE_TYPE (rc),
1004 IOPARM_common_libreturn_mask));
1005
1006 tmp = fold_build2_loc (input_location, SWITCH_EXPR, NULL_TREE, rc, tmp);
1007
1008 gfc_add_expr_to_block (block, tmp);
1009 }
1010
1011
1012 /* Store the current file and line number to variables so that if a
1013 library call goes awry, we can tell the user where the problem is. */
1014
1015 static void
1016 set_error_locus (stmtblock_t * block, tree var, locus * where)
1017 {
1018 gfc_file *f;
1019 tree str, locus_file;
1020 int line;
1021 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_filename];
1022
1023 locus_file = fold_build3_loc (input_location, COMPONENT_REF,
1024 st_parameter[IOPARM_ptype_common].type,
1025 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
1026 locus_file = fold_build3_loc (input_location, COMPONENT_REF,
1027 TREE_TYPE (p->field), locus_file,
1028 p->field, NULL_TREE);
1029 f = where->lb->file;
1030 str = gfc_build_cstring_const (f->filename);
1031
1032 str = gfc_build_addr_expr (pchar_type_node, str);
1033 gfc_add_modify (block, locus_file, str);
1034
1035 line = LOCATION_LINE (where->lb->location);
1036 set_parameter_const (block, var, IOPARM_common_line, line);
1037 }
1038
1039
1040 /* Translate an OPEN statement. */
1041
1042 tree
1043 gfc_trans_open (gfc_code * code)
1044 {
1045 stmtblock_t block, post_block;
1046 gfc_open *p;
1047 tree tmp, var;
1048 unsigned int mask = 0;
1049
1050 gfc_start_block (&block);
1051 gfc_init_block (&post_block);
1052
1053 var = gfc_create_var (st_parameter[IOPARM_ptype_open].type, "open_parm");
1054
1055 set_error_locus (&block, var, &code->loc);
1056 p = code->ext.open;
1057
1058 if (p->iomsg)
1059 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1060 p->iomsg);
1061
1062 if (p->iostat)
1063 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1064 p->iostat);
1065
1066 if (p->err)
1067 mask |= IOPARM_common_err;
1068
1069 if (p->file)
1070 mask |= set_string (&block, &post_block, var, IOPARM_open_file, p->file);
1071
1072 if (p->status)
1073 mask |= set_string (&block, &post_block, var, IOPARM_open_status,
1074 p->status);
1075
1076 if (p->access)
1077 mask |= set_string (&block, &post_block, var, IOPARM_open_access,
1078 p->access);
1079
1080 if (p->form)
1081 mask |= set_string (&block, &post_block, var, IOPARM_open_form, p->form);
1082
1083 if (p->recl)
1084 mask |= set_parameter_value (&block, var, IOPARM_open_recl_in,
1085 p->recl);
1086
1087 if (p->blank)
1088 mask |= set_string (&block, &post_block, var, IOPARM_open_blank,
1089 p->blank);
1090
1091 if (p->position)
1092 mask |= set_string (&block, &post_block, var, IOPARM_open_position,
1093 p->position);
1094
1095 if (p->action)
1096 mask |= set_string (&block, &post_block, var, IOPARM_open_action,
1097 p->action);
1098
1099 if (p->delim)
1100 mask |= set_string (&block, &post_block, var, IOPARM_open_delim,
1101 p->delim);
1102
1103 if (p->pad)
1104 mask |= set_string (&block, &post_block, var, IOPARM_open_pad, p->pad);
1105
1106 if (p->decimal)
1107 mask |= set_string (&block, &post_block, var, IOPARM_open_decimal,
1108 p->decimal);
1109
1110 if (p->encoding)
1111 mask |= set_string (&block, &post_block, var, IOPARM_open_encoding,
1112 p->encoding);
1113
1114 if (p->round)
1115 mask |= set_string (&block, &post_block, var, IOPARM_open_round, p->round);
1116
1117 if (p->sign)
1118 mask |= set_string (&block, &post_block, var, IOPARM_open_sign, p->sign);
1119
1120 if (p->asynchronous)
1121 mask |= set_string (&block, &post_block, var, IOPARM_open_asynchronous,
1122 p->asynchronous);
1123
1124 if (p->convert)
1125 mask |= set_string (&block, &post_block, var, IOPARM_open_convert,
1126 p->convert);
1127
1128 if (p->newunit)
1129 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_open_newunit,
1130 p->newunit);
1131
1132 if (p->cc)
1133 mask |= set_string (&block, &post_block, var, IOPARM_open_cc, p->cc);
1134
1135 if (p->share)
1136 mask |= set_string (&block, &post_block, var, IOPARM_open_share, p->share);
1137
1138 mask |= set_parameter_const (&block, var, IOPARM_open_readonly, p->readonly);
1139
1140 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1141
1142 if (p->unit)
1143 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1144 else
1145 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1146
1147 tmp = gfc_build_addr_expr (NULL_TREE, var);
1148 tmp = build_call_expr_loc (input_location,
1149 iocall[IOCALL_OPEN], 1, tmp);
1150 gfc_add_expr_to_block (&block, tmp);
1151
1152 gfc_add_block_to_block (&block, &post_block);
1153
1154 io_result (&block, var, p->err, NULL, NULL);
1155
1156 return gfc_finish_block (&block);
1157 }
1158
1159
1160 /* Translate a CLOSE statement. */
1161
1162 tree
1163 gfc_trans_close (gfc_code * code)
1164 {
1165 stmtblock_t block, post_block;
1166 gfc_close *p;
1167 tree tmp, var;
1168 unsigned int mask = 0;
1169
1170 gfc_start_block (&block);
1171 gfc_init_block (&post_block);
1172
1173 var = gfc_create_var (st_parameter[IOPARM_ptype_close].type, "close_parm");
1174
1175 set_error_locus (&block, var, &code->loc);
1176 p = code->ext.close;
1177
1178 if (p->iomsg)
1179 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1180 p->iomsg);
1181
1182 if (p->iostat)
1183 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1184 p->iostat);
1185
1186 if (p->err)
1187 mask |= IOPARM_common_err;
1188
1189 if (p->status)
1190 mask |= set_string (&block, &post_block, var, IOPARM_close_status,
1191 p->status);
1192
1193 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1194
1195 if (p->unit)
1196 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1197 else
1198 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1199
1200 tmp = gfc_build_addr_expr (NULL_TREE, var);
1201 tmp = build_call_expr_loc (input_location,
1202 iocall[IOCALL_CLOSE], 1, tmp);
1203 gfc_add_expr_to_block (&block, tmp);
1204
1205 gfc_add_block_to_block (&block, &post_block);
1206
1207 io_result (&block, var, p->err, NULL, NULL);
1208
1209 return gfc_finish_block (&block);
1210 }
1211
1212
1213 /* Common subroutine for building a file positioning statement. */
1214
1215 static tree
1216 build_filepos (tree function, gfc_code * code)
1217 {
1218 stmtblock_t block, post_block;
1219 gfc_filepos *p;
1220 tree tmp, var;
1221 unsigned int mask = 0;
1222
1223 p = code->ext.filepos;
1224
1225 gfc_start_block (&block);
1226 gfc_init_block (&post_block);
1227
1228 var = gfc_create_var (st_parameter[IOPARM_ptype_filepos].type,
1229 "filepos_parm");
1230
1231 set_error_locus (&block, var, &code->loc);
1232
1233 if (p->iomsg)
1234 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1235 p->iomsg);
1236
1237 if (p->iostat)
1238 mask |= set_parameter_ref (&block, &post_block, var,
1239 IOPARM_common_iostat, p->iostat);
1240
1241 if (p->err)
1242 mask |= IOPARM_common_err;
1243
1244 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1245
1246 if (p->unit)
1247 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit,
1248 p->unit);
1249 else
1250 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1251
1252 tmp = gfc_build_addr_expr (NULL_TREE, var);
1253 tmp = build_call_expr_loc (input_location,
1254 function, 1, tmp);
1255 gfc_add_expr_to_block (&block, tmp);
1256
1257 gfc_add_block_to_block (&block, &post_block);
1258
1259 io_result (&block, var, p->err, NULL, NULL);
1260
1261 return gfc_finish_block (&block);
1262 }
1263
1264
1265 /* Translate a BACKSPACE statement. */
1266
1267 tree
1268 gfc_trans_backspace (gfc_code * code)
1269 {
1270 return build_filepos (iocall[IOCALL_BACKSPACE], code);
1271 }
1272
1273
1274 /* Translate an ENDFILE statement. */
1275
1276 tree
1277 gfc_trans_endfile (gfc_code * code)
1278 {
1279 return build_filepos (iocall[IOCALL_ENDFILE], code);
1280 }
1281
1282
1283 /* Translate a REWIND statement. */
1284
1285 tree
1286 gfc_trans_rewind (gfc_code * code)
1287 {
1288 return build_filepos (iocall[IOCALL_REWIND], code);
1289 }
1290
1291
1292 /* Translate a FLUSH statement. */
1293
1294 tree
1295 gfc_trans_flush (gfc_code * code)
1296 {
1297 return build_filepos (iocall[IOCALL_FLUSH], code);
1298 }
1299
1300
1301 /* Translate the non-IOLENGTH form of an INQUIRE statement. */
1302
1303 tree
1304 gfc_trans_inquire (gfc_code * code)
1305 {
1306 stmtblock_t block, post_block;
1307 gfc_inquire *p;
1308 tree tmp, var;
1309 unsigned int mask = 0, mask2 = 0;
1310
1311 gfc_start_block (&block);
1312 gfc_init_block (&post_block);
1313
1314 var = gfc_create_var (st_parameter[IOPARM_ptype_inquire].type,
1315 "inquire_parm");
1316
1317 set_error_locus (&block, var, &code->loc);
1318 p = code->ext.inquire;
1319
1320 if (p->iomsg)
1321 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1322 p->iomsg);
1323
1324 if (p->iostat)
1325 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1326 p->iostat);
1327
1328 if (p->err)
1329 mask |= IOPARM_common_err;
1330
1331 /* Sanity check. */
1332 if (p->unit && p->file)
1333 gfc_error ("INQUIRE statement at %L cannot contain both FILE and UNIT specifiers", &code->loc);
1334
1335 if (p->file)
1336 mask |= set_string (&block, &post_block, var, IOPARM_inquire_file,
1337 p->file);
1338
1339 if (p->exist)
1340 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist,
1341 p->exist);
1342
1343 if (p->opened)
1344 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_opened,
1345 p->opened);
1346
1347 if (p->number)
1348 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_number,
1349 p->number);
1350
1351 if (p->named)
1352 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_named,
1353 p->named);
1354
1355 if (p->name)
1356 mask |= set_string (&block, &post_block, var, IOPARM_inquire_name,
1357 p->name);
1358
1359 if (p->access)
1360 mask |= set_string (&block, &post_block, var, IOPARM_inquire_access,
1361 p->access);
1362
1363 if (p->sequential)
1364 mask |= set_string (&block, &post_block, var, IOPARM_inquire_sequential,
1365 p->sequential);
1366
1367 if (p->direct)
1368 mask |= set_string (&block, &post_block, var, IOPARM_inquire_direct,
1369 p->direct);
1370
1371 if (p->form)
1372 mask |= set_string (&block, &post_block, var, IOPARM_inquire_form,
1373 p->form);
1374
1375 if (p->formatted)
1376 mask |= set_string (&block, &post_block, var, IOPARM_inquire_formatted,
1377 p->formatted);
1378
1379 if (p->unformatted)
1380 mask |= set_string (&block, &post_block, var, IOPARM_inquire_unformatted,
1381 p->unformatted);
1382
1383 if (p->recl)
1384 mask |= set_parameter_ref (&block, &post_block, var,
1385 IOPARM_inquire_recl_out, p->recl);
1386
1387 if (p->nextrec)
1388 mask |= set_parameter_ref (&block, &post_block, var,
1389 IOPARM_inquire_nextrec, p->nextrec);
1390
1391 if (p->blank)
1392 mask |= set_string (&block, &post_block, var, IOPARM_inquire_blank,
1393 p->blank);
1394
1395 if (p->delim)
1396 mask |= set_string (&block, &post_block, var, IOPARM_inquire_delim,
1397 p->delim);
1398
1399 if (p->position)
1400 mask |= set_string (&block, &post_block, var, IOPARM_inquire_position,
1401 p->position);
1402
1403 if (p->action)
1404 mask |= set_string (&block, &post_block, var, IOPARM_inquire_action,
1405 p->action);
1406
1407 if (p->read)
1408 mask |= set_string (&block, &post_block, var, IOPARM_inquire_read,
1409 p->read);
1410
1411 if (p->write)
1412 mask |= set_string (&block, &post_block, var, IOPARM_inquire_write,
1413 p->write);
1414
1415 if (p->readwrite)
1416 mask |= set_string (&block, &post_block, var, IOPARM_inquire_readwrite,
1417 p->readwrite);
1418
1419 if (p->pad)
1420 mask |= set_string (&block, &post_block, var, IOPARM_inquire_pad,
1421 p->pad);
1422
1423 if (p->convert)
1424 mask |= set_string (&block, &post_block, var, IOPARM_inquire_convert,
1425 p->convert);
1426
1427 if (p->strm_pos)
1428 mask |= set_parameter_ref (&block, &post_block, var,
1429 IOPARM_inquire_strm_pos_out, p->strm_pos);
1430
1431 /* The second series of flags. */
1432 if (p->asynchronous)
1433 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_asynchronous,
1434 p->asynchronous);
1435
1436 if (p->decimal)
1437 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_decimal,
1438 p->decimal);
1439
1440 if (p->encoding)
1441 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_encoding,
1442 p->encoding);
1443
1444 if (p->round)
1445 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_round,
1446 p->round);
1447
1448 if (p->sign)
1449 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_sign,
1450 p->sign);
1451
1452 if (p->pending)
1453 mask2 |= set_parameter_ref (&block, &post_block, var,
1454 IOPARM_inquire_pending, p->pending);
1455
1456 if (p->size)
1457 mask2 |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_size,
1458 p->size);
1459
1460 if (p->id)
1461 mask2 |= set_parameter_ref (&block, &post_block,var, IOPARM_inquire_id,
1462 p->id);
1463 if (p->iqstream)
1464 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_iqstream,
1465 p->iqstream);
1466
1467 if (p->share)
1468 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_share,
1469 p->share);
1470
1471 if (p->cc)
1472 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_cc, p->cc);
1473
1474 if (mask2)
1475 mask |= set_parameter_const (&block, var, IOPARM_inquire_flags2, mask2);
1476
1477 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1478
1479 if (p->unit)
1480 {
1481 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1482 set_parameter_value_inquire (&block, var, IOPARM_common_unit, p->unit);
1483 }
1484 else
1485 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1486
1487 tmp = gfc_build_addr_expr (NULL_TREE, var);
1488 tmp = build_call_expr_loc (input_location,
1489 iocall[IOCALL_INQUIRE], 1, tmp);
1490 gfc_add_expr_to_block (&block, tmp);
1491
1492 gfc_add_block_to_block (&block, &post_block);
1493
1494 io_result (&block, var, p->err, NULL, NULL);
1495
1496 return gfc_finish_block (&block);
1497 }
1498
1499
1500 tree
1501 gfc_trans_wait (gfc_code * code)
1502 {
1503 stmtblock_t block, post_block;
1504 gfc_wait *p;
1505 tree tmp, var;
1506 unsigned int mask = 0;
1507
1508 gfc_start_block (&block);
1509 gfc_init_block (&post_block);
1510
1511 var = gfc_create_var (st_parameter[IOPARM_ptype_wait].type,
1512 "wait_parm");
1513
1514 set_error_locus (&block, var, &code->loc);
1515 p = code->ext.wait;
1516
1517 /* Set parameters here. */
1518 if (p->iomsg)
1519 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1520 p->iomsg);
1521
1522 if (p->iostat)
1523 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1524 p->iostat);
1525
1526 if (p->err)
1527 mask |= IOPARM_common_err;
1528
1529 if (p->id)
1530 mask |= set_parameter_value (&block, var, IOPARM_wait_id, p->id);
1531
1532 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1533
1534 if (p->unit)
1535 set_parameter_value_chk (&block, p->iostat, var, IOPARM_common_unit, p->unit);
1536
1537 tmp = gfc_build_addr_expr (NULL_TREE, var);
1538 tmp = build_call_expr_loc (input_location,
1539 iocall[IOCALL_WAIT], 1, tmp);
1540 gfc_add_expr_to_block (&block, tmp);
1541
1542 gfc_add_block_to_block (&block, &post_block);
1543
1544 io_result (&block, var, p->err, NULL, NULL);
1545
1546 return gfc_finish_block (&block);
1547
1548 }
1549
1550
1551 /* nml_full_name builds up the fully qualified name of a
1552 derived type component. '+' is used to denote a type extension. */
1553
1554 static char*
1555 nml_full_name (const char* var_name, const char* cmp_name, bool parent)
1556 {
1557 int full_name_length;
1558 char * full_name;
1559
1560 full_name_length = strlen (var_name) + strlen (cmp_name) + 1;
1561 full_name = XCNEWVEC (char, full_name_length + 1);
1562 strcpy (full_name, var_name);
1563 full_name = strcat (full_name, parent ? "+" : "%");
1564 full_name = strcat (full_name, cmp_name);
1565 return full_name;
1566 }
1567
1568
1569 /* nml_get_addr_expr builds an address expression from the
1570 gfc_symbol or gfc_component backend_decl's. An offset is
1571 provided so that the address of an element of an array of
1572 derived types is returned. This is used in the runtime to
1573 determine that span of the derived type. */
1574
1575 static tree
1576 nml_get_addr_expr (gfc_symbol * sym, gfc_component * c,
1577 tree base_addr)
1578 {
1579 tree decl = NULL_TREE;
1580 tree tmp;
1581
1582 if (sym)
1583 {
1584 sym->attr.referenced = 1;
1585 decl = gfc_get_symbol_decl (sym);
1586
1587 /* If this is the enclosing function declaration, use
1588 the fake result instead. */
1589 if (decl == current_function_decl)
1590 decl = gfc_get_fake_result_decl (sym, 0);
1591 else if (decl == DECL_CONTEXT (current_function_decl))
1592 decl = gfc_get_fake_result_decl (sym, 1);
1593 }
1594 else
1595 decl = c->backend_decl;
1596
1597 gcc_assert (decl && (TREE_CODE (decl) == FIELD_DECL
1598 || VAR_P (decl)
1599 || TREE_CODE (decl) == PARM_DECL
1600 || TREE_CODE (decl) == COMPONENT_REF));
1601
1602 tmp = decl;
1603
1604 /* Build indirect reference, if dummy argument. */
1605
1606 if (POINTER_TYPE_P (TREE_TYPE(tmp)))
1607 tmp = build_fold_indirect_ref_loc (input_location, tmp);
1608
1609 /* Treat the component of a derived type, using base_addr for
1610 the derived type. */
1611
1612 if (TREE_CODE (decl) == FIELD_DECL)
1613 tmp = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (tmp),
1614 base_addr, tmp, NULL_TREE);
1615
1616 if (GFC_CLASS_TYPE_P (TREE_TYPE (tmp))
1617 && GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (gfc_class_data_get (tmp))))
1618 tmp = gfc_class_data_get (tmp);
1619
1620 if (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (tmp)))
1621 tmp = gfc_conv_array_data (tmp);
1622 else
1623 {
1624 if (!POINTER_TYPE_P (TREE_TYPE (tmp)))
1625 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
1626
1627 if (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE)
1628 tmp = gfc_build_array_ref (tmp, gfc_index_zero_node, NULL);
1629
1630 if (!POINTER_TYPE_P (TREE_TYPE (tmp)))
1631 tmp = build_fold_indirect_ref_loc (input_location,
1632 tmp);
1633 }
1634
1635 gcc_assert (tmp && POINTER_TYPE_P (TREE_TYPE (tmp)));
1636
1637 return tmp;
1638 }
1639
1640
1641 /* For an object VAR_NAME whose base address is BASE_ADDR, generate a
1642 call to iocall[IOCALL_SET_NML_VAL]. For derived type variable, recursively
1643 generate calls to iocall[IOCALL_SET_NML_VAL] for each component. */
1644
1645 #define IARG(i) build_int_cst (gfc_array_index_type, i)
1646
1647 static void
1648 transfer_namelist_element (stmtblock_t * block, const char * var_name,
1649 gfc_symbol * sym, gfc_component * c,
1650 tree base_addr)
1651 {
1652 gfc_typespec * ts = NULL;
1653 gfc_array_spec * as = NULL;
1654 tree addr_expr = NULL;
1655 tree dt = NULL;
1656 tree string;
1657 tree tmp;
1658 tree dtype;
1659 tree dt_parm_addr;
1660 tree decl = NULL_TREE;
1661 tree gfc_int4_type_node = gfc_get_int_type (4);
1662 tree dtio_proc = null_pointer_node;
1663 tree vtable = null_pointer_node;
1664 int n_dim;
1665 int rank = 0;
1666
1667 gcc_assert (sym || c);
1668
1669 /* Build the namelist object name. */
1670
1671 string = gfc_build_cstring_const (var_name);
1672 string = gfc_build_addr_expr (pchar_type_node, string);
1673
1674 /* Build ts, as and data address using symbol or component. */
1675
1676 ts = sym ? &sym->ts : &c->ts;
1677
1678 if (ts->type != BT_CLASS)
1679 as = sym ? sym->as : c->as;
1680 else
1681 as = sym ? CLASS_DATA (sym)->as : CLASS_DATA (c)->as;
1682
1683 addr_expr = nml_get_addr_expr (sym, c, base_addr);
1684
1685 if (as)
1686 rank = as->rank;
1687
1688 if (rank)
1689 {
1690 decl = sym ? sym->backend_decl : c->backend_decl;
1691 if (sym && sym->attr.dummy)
1692 decl = build_fold_indirect_ref_loc (input_location, decl);
1693
1694 if (ts->type == BT_CLASS)
1695 decl = gfc_class_data_get (decl);
1696 dt = TREE_TYPE (decl);
1697 dtype = gfc_get_dtype (dt);
1698 }
1699 else
1700 {
1701 dt = gfc_typenode_for_spec (ts);
1702 dtype = gfc_get_dtype_rank_type (0, dt);
1703 }
1704
1705 /* Build up the arguments for the transfer call.
1706 The call for the scalar part transfers:
1707 (address, name, type, kind or string_length, dtype) */
1708
1709 dt_parm_addr = gfc_build_addr_expr (NULL_TREE, dt_parm);
1710
1711 /* Check if the derived type has a specific DTIO for the mode.
1712 Note that although namelist io is forbidden to have a format
1713 list, the specific subroutine is of the formatted kind. */
1714 if (ts->type == BT_DERIVED || ts->type == BT_CLASS)
1715 {
1716 gfc_symbol *derived;
1717 if (ts->type==BT_CLASS)
1718 derived = ts->u.derived->components->ts.u.derived;
1719 else
1720 derived = ts->u.derived;
1721
1722 gfc_symtree *tb_io_st = gfc_find_typebound_dtio_proc (derived,
1723 last_dt == WRITE, true);
1724
1725 if (ts->type == BT_CLASS && tb_io_st)
1726 {
1727 // polymorphic DTIO call (based on the dynamic type)
1728 gfc_se se;
1729 gfc_symtree *st = gfc_find_symtree (sym->ns->sym_root, sym->name);
1730 // build vtable expr
1731 gfc_expr *expr = gfc_get_variable_expr (st);
1732 gfc_add_vptr_component (expr);
1733 gfc_init_se (&se, NULL);
1734 se.want_pointer = 1;
1735 gfc_conv_expr (&se, expr);
1736 vtable = se.expr;
1737 // build dtio expr
1738 gfc_add_component_ref (expr,
1739 tb_io_st->n.tb->u.generic->specific_st->name);
1740 gfc_init_se (&se, NULL);
1741 se.want_pointer = 1;
1742 gfc_conv_expr (&se, expr);
1743 gfc_free_expr (expr);
1744 dtio_proc = se.expr;
1745 }
1746 else
1747 {
1748 // non-polymorphic DTIO call (based on the declared type)
1749 gfc_symbol *dtio_sub = gfc_find_specific_dtio_proc (derived,
1750 last_dt == WRITE, true);
1751 if (dtio_sub != NULL)
1752 {
1753 dtio_proc = gfc_get_symbol_decl (dtio_sub);
1754 dtio_proc = gfc_build_addr_expr (NULL, dtio_proc);
1755 gfc_symbol *vtab = gfc_find_derived_vtab (derived);
1756 vtable = vtab->backend_decl;
1757 if (vtable == NULL_TREE)
1758 vtable = gfc_get_symbol_decl (vtab);
1759 vtable = gfc_build_addr_expr (pvoid_type_node, vtable);
1760 }
1761 }
1762 }
1763
1764 if (ts->type == BT_CHARACTER)
1765 tmp = ts->u.cl->backend_decl;
1766 else
1767 tmp = build_int_cst (gfc_charlen_type_node, 0);
1768
1769 if (dtio_proc == null_pointer_node)
1770 tmp = build_call_expr_loc (input_location,
1771 iocall[IOCALL_SET_NML_VAL], 6,
1772 dt_parm_addr, addr_expr, string,
1773 build_int_cst (gfc_int4_type_node, ts->kind),
1774 tmp, dtype);
1775 else
1776 tmp = build_call_expr_loc (input_location,
1777 iocall[IOCALL_SET_NML_DTIO_VAL], 8,
1778 dt_parm_addr, addr_expr, string,
1779 build_int_cst (gfc_int4_type_node, ts->kind),
1780 tmp, dtype, dtio_proc, vtable);
1781 gfc_add_expr_to_block (block, tmp);
1782
1783 /* If the object is an array, transfer rank times:
1784 (null pointer, name, stride, lbound, ubound) */
1785
1786 for ( n_dim = 0 ; n_dim < rank ; n_dim++ )
1787 {
1788 tmp = build_call_expr_loc (input_location,
1789 iocall[IOCALL_SET_NML_VAL_DIM], 5,
1790 dt_parm_addr,
1791 build_int_cst (gfc_int4_type_node, n_dim),
1792 gfc_conv_array_stride (decl, n_dim),
1793 gfc_conv_array_lbound (decl, n_dim),
1794 gfc_conv_array_ubound (decl, n_dim));
1795 gfc_add_expr_to_block (block, tmp);
1796 }
1797
1798 if (gfc_bt_struct (ts->type) && ts->u.derived->components
1799 && dtio_proc == null_pointer_node)
1800 {
1801 gfc_component *cmp;
1802
1803 /* Provide the RECORD_TYPE to build component references. */
1804
1805 tree expr = build_fold_indirect_ref_loc (input_location,
1806 addr_expr);
1807
1808 for (cmp = ts->u.derived->components; cmp; cmp = cmp->next)
1809 {
1810 char *full_name = nml_full_name (var_name, cmp->name,
1811 ts->u.derived->attr.extension);
1812 transfer_namelist_element (block,
1813 full_name,
1814 NULL, cmp, expr);
1815 free (full_name);
1816 }
1817 }
1818 }
1819
1820 #undef IARG
1821
1822 /* Create a data transfer statement. Not all of the fields are valid
1823 for both reading and writing, but improper use has been filtered
1824 out by now. */
1825
1826 static tree
1827 build_dt (tree function, gfc_code * code)
1828 {
1829 stmtblock_t block, post_block, post_end_block, post_iu_block;
1830 gfc_dt *dt;
1831 tree tmp, var;
1832 gfc_expr *nmlname;
1833 gfc_namelist *nml;
1834 unsigned int mask = 0;
1835
1836 gfc_start_block (&block);
1837 gfc_init_block (&post_block);
1838 gfc_init_block (&post_end_block);
1839 gfc_init_block (&post_iu_block);
1840
1841 var = gfc_create_var (st_parameter[IOPARM_ptype_dt].type, "dt_parm");
1842
1843 set_error_locus (&block, var, &code->loc);
1844
1845 if (last_dt == IOLENGTH)
1846 {
1847 gfc_inquire *inq;
1848
1849 inq = code->ext.inquire;
1850
1851 /* First check that preconditions are met. */
1852 gcc_assert (inq != NULL);
1853 gcc_assert (inq->iolength != NULL);
1854
1855 /* Connect to the iolength variable. */
1856 mask |= set_parameter_ref (&block, &post_end_block, var,
1857 IOPARM_dt_iolength, inq->iolength);
1858 dt = NULL;
1859 }
1860 else
1861 {
1862 dt = code->ext.dt;
1863 gcc_assert (dt != NULL);
1864 }
1865
1866 if (dt && dt->io_unit)
1867 {
1868 if (dt->io_unit->ts.type == BT_CHARACTER)
1869 {
1870 mask |= set_internal_unit (&block, &post_iu_block,
1871 var, dt->io_unit);
1872 set_parameter_const (&block, var, IOPARM_common_unit,
1873 dt->io_unit->ts.kind == 1 ?
1874 GFC_INTERNAL_UNIT : GFC_INTERNAL_UNIT4);
1875 }
1876 }
1877 else
1878 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1879
1880 if (dt)
1881 {
1882 if (dt->iomsg)
1883 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1884 dt->iomsg);
1885
1886 if (dt->iostat)
1887 mask |= set_parameter_ref (&block, &post_end_block, var,
1888 IOPARM_common_iostat, dt->iostat);
1889
1890 if (dt->err)
1891 mask |= IOPARM_common_err;
1892
1893 if (dt->eor)
1894 mask |= IOPARM_common_eor;
1895
1896 if (dt->end)
1897 mask |= IOPARM_common_end;
1898
1899 if (dt->id)
1900 mask |= set_parameter_ref (&block, &post_end_block, var,
1901 IOPARM_dt_id, dt->id);
1902
1903 if (dt->pos)
1904 mask |= set_parameter_value (&block, var, IOPARM_dt_pos, dt->pos);
1905
1906 if (dt->asynchronous)
1907 mask |= set_string (&block, &post_block, var,
1908 IOPARM_dt_asynchronous, dt->asynchronous);
1909
1910 if (dt->blank)
1911 mask |= set_string (&block, &post_block, var, IOPARM_dt_blank,
1912 dt->blank);
1913
1914 if (dt->decimal)
1915 mask |= set_string (&block, &post_block, var, IOPARM_dt_decimal,
1916 dt->decimal);
1917
1918 if (dt->delim)
1919 mask |= set_string (&block, &post_block, var, IOPARM_dt_delim,
1920 dt->delim);
1921
1922 if (dt->pad)
1923 mask |= set_string (&block, &post_block, var, IOPARM_dt_pad,
1924 dt->pad);
1925
1926 if (dt->round)
1927 mask |= set_string (&block, &post_block, var, IOPARM_dt_round,
1928 dt->round);
1929
1930 if (dt->sign)
1931 mask |= set_string (&block, &post_block, var, IOPARM_dt_sign,
1932 dt->sign);
1933
1934 if (dt->rec)
1935 mask |= set_parameter_value (&block, var, IOPARM_dt_rec, dt->rec);
1936
1937 if (dt->advance)
1938 mask |= set_string (&block, &post_block, var, IOPARM_dt_advance,
1939 dt->advance);
1940
1941 if (dt->format_expr)
1942 mask |= set_string (&block, &post_end_block, var, IOPARM_dt_format,
1943 dt->format_expr);
1944
1945 if (dt->format_label)
1946 {
1947 if (dt->format_label == &format_asterisk)
1948 mask |= IOPARM_dt_list_format;
1949 else
1950 mask |= set_string (&block, &post_block, var, IOPARM_dt_format,
1951 dt->format_label->format);
1952 }
1953
1954 if (dt->size)
1955 mask |= set_parameter_ref (&block, &post_end_block, var,
1956 IOPARM_dt_size, dt->size);
1957
1958 if (dt->udtio)
1959 mask |= IOPARM_dt_dtio;
1960
1961 if (dt->dec_ext)
1962 mask |= IOPARM_dt_dec_ext;
1963
1964 if (dt->namelist)
1965 {
1966 if (dt->format_expr || dt->format_label)
1967 gfc_internal_error ("build_dt: format with namelist");
1968
1969 nmlname = gfc_get_character_expr (gfc_default_character_kind, NULL,
1970 dt->namelist->name,
1971 strlen (dt->namelist->name));
1972
1973 mask |= set_string (&block, &post_block, var, IOPARM_dt_namelist_name,
1974 nmlname);
1975
1976 gfc_free_expr (nmlname);
1977
1978 if (last_dt == READ)
1979 mask |= IOPARM_dt_namelist_read_mode;
1980
1981 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1982
1983 dt_parm = var;
1984
1985 for (nml = dt->namelist->namelist; nml; nml = nml->next)
1986 transfer_namelist_element (&block, nml->sym->name, nml->sym,
1987 NULL, NULL_TREE);
1988 }
1989 else
1990 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1991
1992 if (dt->io_unit && dt->io_unit->ts.type == BT_INTEGER)
1993 set_parameter_value_chk (&block, dt->iostat, var,
1994 IOPARM_common_unit, dt->io_unit);
1995 }
1996 else
1997 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1998
1999 tmp = gfc_build_addr_expr (NULL_TREE, var);
2000 tmp = build_call_expr_loc (UNKNOWN_LOCATION,
2001 function, 1, tmp);
2002 gfc_add_expr_to_block (&block, tmp);
2003
2004 gfc_add_block_to_block (&block, &post_block);
2005
2006 dt_parm = var;
2007 dt_post_end_block = &post_end_block;
2008
2009 /* Set implied do loop exit condition. */
2010 if (last_dt == READ || last_dt == WRITE)
2011 {
2012 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags];
2013
2014 tmp = fold_build3_loc (input_location, COMPONENT_REF,
2015 st_parameter[IOPARM_ptype_common].type,
2016 dt_parm, TYPE_FIELDS (TREE_TYPE (dt_parm)),
2017 NULL_TREE);
2018 tmp = fold_build3_loc (input_location, COMPONENT_REF,
2019 TREE_TYPE (p->field), tmp, p->field, NULL_TREE);
2020 tmp = fold_build2_loc (input_location, BIT_AND_EXPR, TREE_TYPE (tmp),
2021 tmp, build_int_cst (TREE_TYPE (tmp),
2022 IOPARM_common_libreturn_mask));
2023 }
2024 else /* IOLENGTH */
2025 tmp = NULL_TREE;
2026
2027 gfc_add_expr_to_block (&block, gfc_trans_code_cond (code->block->next, tmp));
2028
2029 gfc_add_block_to_block (&block, &post_iu_block);
2030
2031 dt_parm = NULL;
2032 dt_post_end_block = NULL;
2033
2034 return gfc_finish_block (&block);
2035 }
2036
2037
2038 /* Translate the IOLENGTH form of an INQUIRE statement. We treat
2039 this as a third sort of data transfer statement, except that
2040 lengths are summed instead of actually transferring any data. */
2041
2042 tree
2043 gfc_trans_iolength (gfc_code * code)
2044 {
2045 last_dt = IOLENGTH;
2046 return build_dt (iocall[IOCALL_IOLENGTH], code);
2047 }
2048
2049
2050 /* Translate a READ statement. */
2051
2052 tree
2053 gfc_trans_read (gfc_code * code)
2054 {
2055 last_dt = READ;
2056 return build_dt (iocall[IOCALL_READ], code);
2057 }
2058
2059
2060 /* Translate a WRITE statement */
2061
2062 tree
2063 gfc_trans_write (gfc_code * code)
2064 {
2065 last_dt = WRITE;
2066 return build_dt (iocall[IOCALL_WRITE], code);
2067 }
2068
2069
2070 /* Finish a data transfer statement. */
2071
2072 tree
2073 gfc_trans_dt_end (gfc_code * code)
2074 {
2075 tree function, tmp;
2076 stmtblock_t block;
2077
2078 gfc_init_block (&block);
2079
2080 switch (last_dt)
2081 {
2082 case READ:
2083 function = iocall[IOCALL_READ_DONE];
2084 break;
2085
2086 case WRITE:
2087 function = iocall[IOCALL_WRITE_DONE];
2088 break;
2089
2090 case IOLENGTH:
2091 function = iocall[IOCALL_IOLENGTH_DONE];
2092 break;
2093
2094 default:
2095 gcc_unreachable ();
2096 }
2097
2098 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2099 tmp = build_call_expr_loc (input_location,
2100 function, 1, tmp);
2101 gfc_add_expr_to_block (&block, tmp);
2102 gfc_add_block_to_block (&block, dt_post_end_block);
2103 gfc_init_block (dt_post_end_block);
2104
2105 if (last_dt != IOLENGTH)
2106 {
2107 gcc_assert (code->ext.dt != NULL);
2108 io_result (&block, dt_parm, code->ext.dt->err,
2109 code->ext.dt->end, code->ext.dt->eor);
2110 }
2111
2112 return gfc_finish_block (&block);
2113 }
2114
2115 static void
2116 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr,
2117 gfc_code * code, tree vptr);
2118
2119 /* Given an array field in a derived type variable, generate the code
2120 for the loop that iterates over array elements, and the code that
2121 accesses those array elements. Use transfer_expr to generate code
2122 for transferring that element. Because elements may also be
2123 derived types, transfer_expr and transfer_array_component are mutually
2124 recursive. */
2125
2126 static tree
2127 transfer_array_component (tree expr, gfc_component * cm, locus * where)
2128 {
2129 tree tmp;
2130 stmtblock_t body;
2131 stmtblock_t block;
2132 gfc_loopinfo loop;
2133 int n;
2134 gfc_ss *ss;
2135 gfc_se se;
2136 gfc_array_info *ss_array;
2137
2138 gfc_start_block (&block);
2139 gfc_init_se (&se, NULL);
2140
2141 /* Create and initialize Scalarization Status. Unlike in
2142 gfc_trans_transfer, we can't simply use gfc_walk_expr to take
2143 care of this task, because we don't have a gfc_expr at hand.
2144 Build one manually, as in gfc_trans_subarray_assign. */
2145
2146 ss = gfc_get_array_ss (gfc_ss_terminator, NULL, cm->as->rank,
2147 GFC_SS_COMPONENT);
2148 ss_array = &ss->info->data.array;
2149
2150 if (cm->attr.pdt_array)
2151 ss_array->shape = NULL;
2152 else
2153 ss_array->shape = gfc_get_shape (cm->as->rank);
2154
2155 ss_array->descriptor = expr;
2156 ss_array->data = gfc_conv_array_data (expr);
2157 ss_array->offset = gfc_conv_array_offset (expr);
2158 for (n = 0; n < cm->as->rank; n++)
2159 {
2160 ss_array->start[n] = gfc_conv_array_lbound (expr, n);
2161 ss_array->stride[n] = gfc_index_one_node;
2162
2163 if (cm->attr.pdt_array)
2164 ss_array->end[n] = gfc_conv_array_ubound (expr, n);
2165 else
2166 {
2167 mpz_init (ss_array->shape[n]);
2168 mpz_sub (ss_array->shape[n], cm->as->upper[n]->value.integer,
2169 cm->as->lower[n]->value.integer);
2170 mpz_add_ui (ss_array->shape[n], ss_array->shape[n], 1);
2171 }
2172 }
2173
2174 /* Once we got ss, we use scalarizer to create the loop. */
2175
2176 gfc_init_loopinfo (&loop);
2177 gfc_add_ss_to_loop (&loop, ss);
2178 gfc_conv_ss_startstride (&loop);
2179 gfc_conv_loop_setup (&loop, where);
2180 gfc_mark_ss_chain_used (ss, 1);
2181 gfc_start_scalarized_body (&loop, &body);
2182
2183 gfc_copy_loopinfo_to_se (&se, &loop);
2184 se.ss = ss;
2185
2186 /* gfc_conv_tmp_array_ref assumes that se.expr contains the array. */
2187 se.expr = expr;
2188 gfc_conv_tmp_array_ref (&se);
2189
2190 /* Now se.expr contains an element of the array. Take the address and pass
2191 it to the IO routines. */
2192 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
2193 transfer_expr (&se, &cm->ts, tmp, NULL, NULL_TREE);
2194
2195 /* We are done now with the loop body. Wrap up the scalarizer and
2196 return. */
2197
2198 gfc_add_block_to_block (&body, &se.pre);
2199 gfc_add_block_to_block (&body, &se.post);
2200
2201 gfc_trans_scalarizing_loops (&loop, &body);
2202
2203 gfc_add_block_to_block (&block, &loop.pre);
2204 gfc_add_block_to_block (&block, &loop.post);
2205
2206 if (!cm->attr.pdt_array)
2207 {
2208 gcc_assert (ss_array->shape != NULL);
2209 gfc_free_shape (&ss_array->shape, cm->as->rank);
2210 }
2211 gfc_cleanup_loop (&loop);
2212
2213 return gfc_finish_block (&block);
2214 }
2215
2216
2217 /* Helper function for transfer_expr that looks for the DTIO procedure
2218 either as a typebound binding or in a generic interface. If present,
2219 the address expression of the procedure is returned. It is assumed
2220 that the procedure interface has been checked during resolution. */
2221
2222 static tree
2223 get_dtio_proc (gfc_typespec * ts, gfc_code * code, gfc_symbol **dtio_sub)
2224 {
2225 gfc_symbol *derived;
2226 bool formatted = false;
2227 gfc_dt *dt = code->ext.dt;
2228
2229 /* Determine when to use the formatted DTIO procedure. */
2230 if (dt && (dt->format_expr || dt->format_label))
2231 formatted = true;
2232
2233 if (ts->type == BT_CLASS)
2234 derived = ts->u.derived->components->ts.u.derived;
2235 else
2236 derived = ts->u.derived;
2237
2238 gfc_symtree *tb_io_st = gfc_find_typebound_dtio_proc (derived,
2239 last_dt == WRITE, formatted);
2240 if (ts->type == BT_CLASS && tb_io_st)
2241 {
2242 // polymorphic DTIO call (based on the dynamic type)
2243 gfc_se se;
2244 gfc_expr *expr = gfc_find_and_cut_at_last_class_ref (code->expr1);
2245 gfc_add_vptr_component (expr);
2246 gfc_add_component_ref (expr,
2247 tb_io_st->n.tb->u.generic->specific_st->name);
2248 *dtio_sub = tb_io_st->n.tb->u.generic->specific->u.specific->n.sym;
2249 gfc_init_se (&se, NULL);
2250 se.want_pointer = 1;
2251 gfc_conv_expr (&se, expr);
2252 gfc_free_expr (expr);
2253 return se.expr;
2254 }
2255 else
2256 {
2257 // non-polymorphic DTIO call (based on the declared type)
2258 *dtio_sub = gfc_find_specific_dtio_proc (derived, last_dt == WRITE,
2259 formatted);
2260
2261 if (*dtio_sub)
2262 return gfc_build_addr_expr (NULL, gfc_get_symbol_decl (*dtio_sub));
2263 }
2264
2265 return NULL_TREE;
2266 }
2267
2268 /* Generate the call for a scalar transfer node. */
2269
2270 static void
2271 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr,
2272 gfc_code * code, tree vptr)
2273 {
2274 tree tmp, function, arg2, arg3, field, expr;
2275 gfc_component *c;
2276 int kind;
2277
2278 /* It is possible to get a C_NULL_PTR or C_NULL_FUNPTR expression here if
2279 the user says something like: print *, 'c_null_ptr: ', c_null_ptr
2280 We need to translate the expression to a constant if it's either
2281 C_NULL_PTR or C_NULL_FUNPTR. We could also get a user variable of
2282 type C_PTR or C_FUNPTR, in which case the ts->type may no longer be
2283 BT_DERIVED (could have been changed by gfc_conv_expr). */
2284 if ((ts->type == BT_DERIVED || ts->type == BT_INTEGER)
2285 && ts->u.derived != NULL
2286 && (ts->is_iso_c == 1 || ts->u.derived->ts.is_iso_c == 1))
2287 {
2288 ts->type = BT_INTEGER;
2289 ts->kind = gfc_index_integer_kind;
2290 }
2291
2292 /* gfortran reaches here for "print *, c_loc(xxx)". */
2293 if (ts->type == BT_VOID
2294 && code->expr1 && code->expr1->ts.type == BT_VOID
2295 && code->expr1->symtree
2296 && strcmp (code->expr1->symtree->name, "c_loc") == 0)
2297 {
2298 ts->type = BT_INTEGER;
2299 ts->kind = gfc_index_integer_kind;
2300 }
2301
2302 kind = ts->kind;
2303 function = NULL;
2304 arg2 = NULL;
2305 arg3 = NULL;
2306
2307 switch (ts->type)
2308 {
2309 case BT_INTEGER:
2310 arg2 = build_int_cst (integer_type_node, kind);
2311 if (last_dt == READ)
2312 function = iocall[IOCALL_X_INTEGER];
2313 else
2314 function = iocall[IOCALL_X_INTEGER_WRITE];
2315
2316 break;
2317
2318 case BT_REAL:
2319 arg2 = build_int_cst (integer_type_node, kind);
2320 if (last_dt == READ)
2321 {
2322 if (gfc_real16_is_float128 && ts->kind == 16)
2323 function = iocall[IOCALL_X_REAL128];
2324 else
2325 function = iocall[IOCALL_X_REAL];
2326 }
2327 else
2328 {
2329 if (gfc_real16_is_float128 && ts->kind == 16)
2330 function = iocall[IOCALL_X_REAL128_WRITE];
2331 else
2332 function = iocall[IOCALL_X_REAL_WRITE];
2333 }
2334
2335 break;
2336
2337 case BT_COMPLEX:
2338 arg2 = build_int_cst (integer_type_node, kind);
2339 if (last_dt == READ)
2340 {
2341 if (gfc_real16_is_float128 && ts->kind == 16)
2342 function = iocall[IOCALL_X_COMPLEX128];
2343 else
2344 function = iocall[IOCALL_X_COMPLEX];
2345 }
2346 else
2347 {
2348 if (gfc_real16_is_float128 && ts->kind == 16)
2349 function = iocall[IOCALL_X_COMPLEX128_WRITE];
2350 else
2351 function = iocall[IOCALL_X_COMPLEX_WRITE];
2352 }
2353
2354 break;
2355
2356 case BT_LOGICAL:
2357 arg2 = build_int_cst (integer_type_node, kind);
2358 if (last_dt == READ)
2359 function = iocall[IOCALL_X_LOGICAL];
2360 else
2361 function = iocall[IOCALL_X_LOGICAL_WRITE];
2362
2363 break;
2364
2365 case BT_CHARACTER:
2366 if (kind == 4)
2367 {
2368 if (se->string_length)
2369 arg2 = se->string_length;
2370 else
2371 {
2372 tmp = build_fold_indirect_ref_loc (input_location,
2373 addr_expr);
2374 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2375 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2376 arg2 = fold_convert (gfc_charlen_type_node, arg2);
2377 }
2378 arg3 = build_int_cst (integer_type_node, kind);
2379 if (last_dt == READ)
2380 function = iocall[IOCALL_X_CHARACTER_WIDE];
2381 else
2382 function = iocall[IOCALL_X_CHARACTER_WIDE_WRITE];
2383
2384 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2385 tmp = build_call_expr_loc (input_location,
2386 function, 4, tmp, addr_expr, arg2, arg3);
2387 gfc_add_expr_to_block (&se->pre, tmp);
2388 gfc_add_block_to_block (&se->pre, &se->post);
2389 return;
2390 }
2391 /* Fall through. */
2392 case BT_HOLLERITH:
2393 if (se->string_length)
2394 arg2 = se->string_length;
2395 else
2396 {
2397 tmp = build_fold_indirect_ref_loc (input_location,
2398 addr_expr);
2399 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2400 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2401 }
2402 if (last_dt == READ)
2403 function = iocall[IOCALL_X_CHARACTER];
2404 else
2405 function = iocall[IOCALL_X_CHARACTER_WRITE];
2406
2407 break;
2408
2409 case_bt_struct:
2410 case BT_CLASS:
2411 if (ts->u.derived->components == NULL)
2412 return;
2413 if (gfc_bt_struct (ts->type) || ts->type == BT_CLASS)
2414 {
2415 gfc_symbol *derived;
2416 gfc_symbol *dtio_sub = NULL;
2417 /* Test for a specific DTIO subroutine. */
2418 if (ts->type == BT_DERIVED)
2419 derived = ts->u.derived;
2420 else
2421 derived = ts->u.derived->components->ts.u.derived;
2422
2423 if (derived->attr.has_dtio_procs)
2424 arg2 = get_dtio_proc (ts, code, &dtio_sub);
2425
2426 if ((dtio_sub != NULL) && (last_dt != IOLENGTH))
2427 {
2428 tree decl;
2429 decl = build_fold_indirect_ref_loc (input_location,
2430 se->expr);
2431 /* Remember that the first dummy of the DTIO subroutines
2432 is CLASS(derived) for extensible derived types, so the
2433 conversion must be done here for derived type and for
2434 scalarized CLASS array element io-list objects. */
2435 if ((ts->type == BT_DERIVED
2436 && !(ts->u.derived->attr.sequence
2437 || ts->u.derived->attr.is_bind_c))
2438 || (ts->type == BT_CLASS
2439 && !GFC_CLASS_TYPE_P (TREE_TYPE (decl))))
2440 gfc_conv_derived_to_class (se, code->expr1,
2441 dtio_sub->formal->sym->ts,
2442 vptr, false, false);
2443 addr_expr = se->expr;
2444 function = iocall[IOCALL_X_DERIVED];
2445 break;
2446 }
2447 else if (gfc_bt_struct (ts->type))
2448 {
2449 /* Recurse into the elements of the derived type. */
2450 expr = gfc_evaluate_now (addr_expr, &se->pre);
2451 expr = build_fold_indirect_ref_loc (input_location, expr);
2452
2453 /* Make sure that the derived type has been built. An external
2454 function, if only referenced in an io statement, requires this
2455 check (see PR58771). */
2456 if (ts->u.derived->backend_decl == NULL_TREE)
2457 (void) gfc_typenode_for_spec (ts);
2458
2459 for (c = ts->u.derived->components; c; c = c->next)
2460 {
2461 /* Ignore hidden string lengths. */
2462 if (c->name[0] == '_')
2463 continue;
2464
2465 field = c->backend_decl;
2466 gcc_assert (field && TREE_CODE (field) == FIELD_DECL);
2467
2468 tmp = fold_build3_loc (UNKNOWN_LOCATION,
2469 COMPONENT_REF, TREE_TYPE (field),
2470 expr, field, NULL_TREE);
2471
2472 if (c->attr.dimension)
2473 {
2474 tmp = transfer_array_component (tmp, c, & code->loc);
2475 gfc_add_expr_to_block (&se->pre, tmp);
2476 }
2477 else
2478 {
2479 tree strlen = NULL_TREE;
2480
2481 if (!c->attr.pointer && !c->attr.pdt_string)
2482 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
2483
2484 /* Use the hidden string length for pdt strings. */
2485 if (c->attr.pdt_string
2486 && gfc_deferred_strlen (c, &strlen)
2487 && strlen != NULL_TREE)
2488 {
2489 strlen = fold_build3_loc (UNKNOWN_LOCATION,
2490 COMPONENT_REF,
2491 TREE_TYPE (strlen),
2492 expr, strlen, NULL_TREE);
2493 se->string_length = strlen;
2494 }
2495
2496 transfer_expr (se, &c->ts, tmp, code, NULL_TREE);
2497
2498 /* Reset so that the pdt string length does not propagate
2499 through to other strings. */
2500 if (c->attr.pdt_string && strlen)
2501 se->string_length = NULL_TREE;
2502 }
2503 }
2504 return;
2505 }
2506 /* If a CLASS object gets through to here, fall through and ICE. */
2507 }
2508 gcc_fallthrough ();
2509 default:
2510 gfc_internal_error ("Bad IO basetype (%d)", ts->type);
2511 }
2512
2513 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2514 tmp = build_call_expr_loc (input_location,
2515 function, 3, tmp, addr_expr, arg2);
2516 gfc_add_expr_to_block (&se->pre, tmp);
2517 gfc_add_block_to_block (&se->pre, &se->post);
2518
2519 }
2520
2521
2522 /* Generate a call to pass an array descriptor to the IO library. The
2523 array should be of one of the intrinsic types. */
2524
2525 static void
2526 transfer_array_desc (gfc_se * se, gfc_typespec * ts, tree addr_expr)
2527 {
2528 tree tmp, charlen_arg, kind_arg, io_call;
2529
2530 if (ts->type == BT_CHARACTER)
2531 charlen_arg = se->string_length;
2532 else
2533 charlen_arg = build_int_cst (gfc_charlen_type_node, 0);
2534
2535 kind_arg = build_int_cst (integer_type_node, ts->kind);
2536
2537 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2538 if (last_dt == READ)
2539 io_call = iocall[IOCALL_X_ARRAY];
2540 else
2541 io_call = iocall[IOCALL_X_ARRAY_WRITE];
2542
2543 tmp = build_call_expr_loc (UNKNOWN_LOCATION,
2544 io_call, 4,
2545 tmp, addr_expr, kind_arg, charlen_arg);
2546 gfc_add_expr_to_block (&se->pre, tmp);
2547 gfc_add_block_to_block (&se->pre, &se->post);
2548 }
2549
2550
2551 /* gfc_trans_transfer()-- Translate a TRANSFER code node */
2552
2553 tree
2554 gfc_trans_transfer (gfc_code * code)
2555 {
2556 stmtblock_t block, body;
2557 gfc_loopinfo loop;
2558 gfc_expr *expr;
2559 gfc_ref *ref;
2560 gfc_ss *ss;
2561 gfc_se se;
2562 tree tmp;
2563 tree vptr;
2564 int n;
2565
2566 gfc_start_block (&block);
2567 gfc_init_block (&body);
2568
2569 expr = code->expr1;
2570 ref = NULL;
2571 gfc_init_se (&se, NULL);
2572
2573 if (expr->rank == 0)
2574 {
2575 /* Transfer a scalar value. */
2576 if (expr->ts.type == BT_CLASS)
2577 {
2578 se.want_pointer = 1;
2579 gfc_conv_expr (&se, expr);
2580 vptr = gfc_get_vptr_from_expr (se.expr);
2581 }
2582 else
2583 {
2584 vptr = NULL_TREE;
2585 gfc_conv_expr_reference (&se, expr);
2586 }
2587 transfer_expr (&se, &expr->ts, se.expr, code, vptr);
2588 }
2589 else
2590 {
2591 /* Transfer an array. If it is an array of an intrinsic
2592 type, pass the descriptor to the library. Otherwise
2593 scalarize the transfer. */
2594 if (expr->ref && !gfc_is_proc_ptr_comp (expr))
2595 {
2596 for (ref = expr->ref; ref && ref->type != REF_ARRAY;
2597 ref = ref->next);
2598 gcc_assert (ref && ref->type == REF_ARRAY);
2599 }
2600
2601 if (expr->ts.type != BT_CLASS
2602 && expr->expr_type == EXPR_VARIABLE
2603 && gfc_expr_attr (expr).pointer)
2604 goto scalarize;
2605
2606
2607 if (!(gfc_bt_struct (expr->ts.type)
2608 || expr->ts.type == BT_CLASS)
2609 && ref && ref->next == NULL
2610 && !is_subref_array (expr))
2611 {
2612 bool seen_vector = false;
2613
2614 if (ref && ref->u.ar.type == AR_SECTION)
2615 {
2616 for (n = 0; n < ref->u.ar.dimen; n++)
2617 if (ref->u.ar.dimen_type[n] == DIMEN_VECTOR)
2618 {
2619 seen_vector = true;
2620 break;
2621 }
2622 }
2623
2624 if (seen_vector && last_dt == READ)
2625 {
2626 /* Create a temp, read to that and copy it back. */
2627 gfc_conv_subref_array_arg (&se, expr, 0, INTENT_OUT, false);
2628 tmp = se.expr;
2629 }
2630 else
2631 {
2632 /* Get the descriptor. */
2633 gfc_conv_expr_descriptor (&se, expr);
2634 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
2635 }
2636
2637 transfer_array_desc (&se, &expr->ts, tmp);
2638 goto finish_block_label;
2639 }
2640
2641 scalarize:
2642 /* Initialize the scalarizer. */
2643 ss = gfc_walk_expr (expr);
2644 gfc_init_loopinfo (&loop);
2645 gfc_add_ss_to_loop (&loop, ss);
2646
2647 /* Initialize the loop. */
2648 gfc_conv_ss_startstride (&loop);
2649 gfc_conv_loop_setup (&loop, &code->expr1->where);
2650
2651 /* The main loop body. */
2652 gfc_mark_ss_chain_used (ss, 1);
2653 gfc_start_scalarized_body (&loop, &body);
2654
2655 gfc_copy_loopinfo_to_se (&se, &loop);
2656 se.ss = ss;
2657
2658 gfc_conv_expr_reference (&se, expr);
2659
2660 if (expr->ts.type == BT_CLASS)
2661 vptr = gfc_get_vptr_from_expr (ss->info->data.array.descriptor);
2662 else
2663 vptr = NULL_TREE;
2664 transfer_expr (&se, &expr->ts, se.expr, code, vptr);
2665 }
2666
2667 finish_block_label:
2668
2669 gfc_add_block_to_block (&body, &se.pre);
2670 gfc_add_block_to_block (&body, &se.post);
2671
2672 if (se.ss == NULL)
2673 tmp = gfc_finish_block (&body);
2674 else
2675 {
2676 gcc_assert (expr->rank != 0);
2677 gcc_assert (se.ss == gfc_ss_terminator);
2678 gfc_trans_scalarizing_loops (&loop, &body);
2679
2680 gfc_add_block_to_block (&loop.pre, &loop.post);
2681 tmp = gfc_finish_block (&loop.pre);
2682 gfc_cleanup_loop (&loop);
2683 }
2684
2685 gfc_add_expr_to_block (&block, tmp);
2686
2687 return gfc_finish_block (&block);
2688 }
2689
2690 #include "gt-fortran-trans-io.h"
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