1 /* IO Code translation/library interface
2 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Contributed by Paul Brook
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
25 #include "coretypes.h"
33 #include "trans-stmt.h"
34 #include "trans-array.h"
35 #include "trans-types.h"
36 #include "trans-const.h"
38 /* Members of the ioparm structure. */
67 typedef struct GTY(()) gfc_st_parameter_field {
70 enum ioparam_type param_type;
71 enum iofield_type type;
75 gfc_st_parameter_field;
77 typedef struct GTY(()) gfc_st_parameter {
85 #define IOPARM(param_type, name, mask, type) IOPARM_##param_type##_##name,
91 static GTY(()) gfc_st_parameter st_parameter[] =
102 static GTY(()) gfc_st_parameter_field st_parameter_field[] =
104 #define IOPARM(param_type, name, mask, type) \
105 { #name, mask, IOPARM_ptype_##param_type, IOPARM_type_##type, NULL, NULL },
106 #include "ioparm.def"
108 { NULL, 0, (enum ioparam_type) 0, (enum iofield_type) 0, NULL, NULL }
111 /* Library I/O subroutines */
122 IOCALL_X_CHARACTER_WIDE,
130 IOCALL_IOLENGTH_DONE,
136 IOCALL_SET_NML_VAL_DIM,
141 static GTY(()) tree iocall[IOCALL_NUM];
143 /* Variable for keeping track of what the last data transfer statement
144 was. Used for deciding which subroutine to call when the data
145 transfer is complete. */
146 static enum { READ, WRITE, IOLENGTH } last_dt;
148 /* The data transfer parameter block that should be shared by all
149 data transfer calls belonging to the same read/write/iolength. */
150 static GTY(()) tree dt_parm;
151 static stmtblock_t *dt_post_end_block;
154 gfc_build_st_parameter (enum ioparam_type ptype, tree *types)
157 gfc_st_parameter_field *p;
160 tree t = make_node (RECORD_TYPE);
162 len = strlen (st_parameter[ptype].name);
163 gcc_assert (len <= sizeof (name) - sizeof ("__st_parameter_"));
164 memcpy (name, "__st_parameter_", sizeof ("__st_parameter_"));
165 memcpy (name + sizeof ("__st_parameter_") - 1, st_parameter[ptype].name,
167 TYPE_NAME (t) = get_identifier (name);
169 for (type = 0, p = st_parameter_field; type < IOPARM_field_num; type++, p++)
170 if (p->param_type == ptype)
173 case IOPARM_type_int4:
174 case IOPARM_type_intio:
175 case IOPARM_type_pint4:
176 case IOPARM_type_pintio:
177 case IOPARM_type_parray:
178 case IOPARM_type_pchar:
179 case IOPARM_type_pad:
180 p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t,
181 get_identifier (p->name),
184 case IOPARM_type_char1:
185 p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t,
186 get_identifier (p->name),
189 case IOPARM_type_char2:
190 len = strlen (p->name);
191 gcc_assert (len <= sizeof (name) - sizeof ("_len"));
192 memcpy (name, p->name, len);
193 memcpy (name + len, "_len", sizeof ("_len"));
194 p->field_len = gfc_add_field_to_struct (&TYPE_FIELDS (t), t,
195 get_identifier (name),
196 gfc_charlen_type_node);
197 if (p->type == IOPARM_type_char2)
198 p->field = gfc_add_field_to_struct (&TYPE_FIELDS (t), t,
199 get_identifier (p->name),
202 case IOPARM_type_common:
204 = gfc_add_field_to_struct (&TYPE_FIELDS (t), t,
205 get_identifier (p->name),
206 st_parameter[IOPARM_ptype_common].type);
208 case IOPARM_type_num:
213 st_parameter[ptype].type = t;
217 /* Build code to test an error condition and call generate_error if needed.
218 Note: This builds calls to generate_error in the runtime library function.
219 The function generate_error is dependent on certain parameters in the
220 st_parameter_common flags to be set. (See libgfortran/runtime/error.c)
221 Therefore, the code to set these flags must be generated before
222 this function is used. */
225 gfc_trans_io_runtime_check (tree cond, tree var, int error_code,
226 const char * msgid, stmtblock_t * pblock)
231 tree arg1, arg2, arg3;
234 if (integer_zerop (cond))
237 /* The code to generate the error. */
238 gfc_start_block (&block);
240 arg1 = gfc_build_addr_expr (NULL_TREE, var);
242 arg2 = build_int_cst (integer_type_node, error_code),
244 asprintf (&message, "%s", _(msgid));
245 arg3 = gfc_build_addr_expr (pchar_type_node,
246 gfc_build_localized_cstring_const (message));
249 tmp = build_call_expr (gfor_fndecl_generate_error, 3, arg1, arg2, arg3);
251 gfc_add_expr_to_block (&block, tmp);
253 body = gfc_finish_block (&block);
255 if (integer_onep (cond))
257 gfc_add_expr_to_block (pblock, body);
261 /* Tell the compiler that this isn't likely. */
262 cond = fold_convert (long_integer_type_node, cond);
263 tmp = build_int_cst (long_integer_type_node, 0);
264 cond = build_call_expr (built_in_decls[BUILT_IN_EXPECT], 2, cond, tmp);
265 cond = fold_convert (boolean_type_node, cond);
267 tmp = build3_v (COND_EXPR, cond, body, build_empty_stmt ());
268 gfc_add_expr_to_block (pblock, tmp);
273 /* Create function decls for IO library functions. */
276 gfc_build_io_library_fndecls (void)
278 tree types[IOPARM_type_num], pad_idx, gfc_int4_type_node;
279 tree gfc_intio_type_node;
280 tree parm_type, dt_parm_type;
281 HOST_WIDE_INT pad_size;
284 types[IOPARM_type_int4] = gfc_int4_type_node = gfc_get_int_type (4);
285 types[IOPARM_type_intio] = gfc_intio_type_node
286 = gfc_get_int_type (gfc_intio_kind);
287 types[IOPARM_type_pint4] = build_pointer_type (gfc_int4_type_node);
288 types[IOPARM_type_pintio]
289 = build_pointer_type (gfc_intio_type_node);
290 types[IOPARM_type_parray] = pchar_type_node;
291 types[IOPARM_type_pchar] = pchar_type_node;
292 pad_size = 16 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (pchar_type_node));
293 pad_size += 32 * TREE_INT_CST_LOW (TYPE_SIZE_UNIT (integer_type_node));
294 pad_idx = build_index_type (build_int_cst (NULL_TREE, pad_size - 1));
295 types[IOPARM_type_pad] = build_array_type (char_type_node, pad_idx);
297 /* pad actually contains pointers and integers so it needs to have an
298 alignment that is at least as large as the needed alignment for those
299 types. See the st_parameter_dt structure in libgfortran/io/io.h for
300 what really goes into this space. */
301 TYPE_ALIGN (types[IOPARM_type_pad]) = MAX (TYPE_ALIGN (pchar_type_node),
302 TYPE_ALIGN (gfc_get_int_type (gfc_intio_kind)));
304 for (ptype = IOPARM_ptype_common; ptype < IOPARM_ptype_num; ptype++)
305 gfc_build_st_parameter ((enum ioparam_type) ptype, types);
307 /* Define the transfer functions. */
309 dt_parm_type = build_pointer_type (st_parameter[IOPARM_ptype_dt].type);
311 iocall[IOCALL_X_INTEGER] =
312 gfc_build_library_function_decl (get_identifier
313 (PREFIX("transfer_integer")),
314 void_type_node, 3, dt_parm_type,
315 pvoid_type_node, gfc_int4_type_node);
317 iocall[IOCALL_X_LOGICAL] =
318 gfc_build_library_function_decl (get_identifier
319 (PREFIX("transfer_logical")),
320 void_type_node, 3, dt_parm_type,
321 pvoid_type_node, gfc_int4_type_node);
323 iocall[IOCALL_X_CHARACTER] =
324 gfc_build_library_function_decl (get_identifier
325 (PREFIX("transfer_character")),
326 void_type_node, 3, dt_parm_type,
327 pvoid_type_node, gfc_int4_type_node);
329 iocall[IOCALL_X_CHARACTER_WIDE] =
330 gfc_build_library_function_decl (get_identifier
331 (PREFIX("transfer_character_wide")),
332 void_type_node, 4, dt_parm_type,
333 pvoid_type_node, gfc_charlen_type_node,
336 iocall[IOCALL_X_REAL] =
337 gfc_build_library_function_decl (get_identifier (PREFIX("transfer_real")),
338 void_type_node, 3, dt_parm_type,
339 pvoid_type_node, gfc_int4_type_node);
341 iocall[IOCALL_X_COMPLEX] =
342 gfc_build_library_function_decl (get_identifier
343 (PREFIX("transfer_complex")),
344 void_type_node, 3, dt_parm_type,
345 pvoid_type_node, gfc_int4_type_node);
347 iocall[IOCALL_X_ARRAY] =
348 gfc_build_library_function_decl (get_identifier
349 (PREFIX("transfer_array")),
350 void_type_node, 4, dt_parm_type,
351 pvoid_type_node, integer_type_node,
352 gfc_charlen_type_node);
354 /* Library entry points */
356 iocall[IOCALL_READ] =
357 gfc_build_library_function_decl (get_identifier (PREFIX("st_read")),
358 void_type_node, 1, dt_parm_type);
360 iocall[IOCALL_WRITE] =
361 gfc_build_library_function_decl (get_identifier (PREFIX("st_write")),
362 void_type_node, 1, dt_parm_type);
364 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_open].type);
365 iocall[IOCALL_OPEN] =
366 gfc_build_library_function_decl (get_identifier (PREFIX("st_open")),
367 void_type_node, 1, parm_type);
370 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_close].type);
371 iocall[IOCALL_CLOSE] =
372 gfc_build_library_function_decl (get_identifier (PREFIX("st_close")),
373 void_type_node, 1, parm_type);
375 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_inquire].type);
376 iocall[IOCALL_INQUIRE] =
377 gfc_build_library_function_decl (get_identifier (PREFIX("st_inquire")),
378 gfc_int4_type_node, 1, parm_type);
380 iocall[IOCALL_IOLENGTH] =
381 gfc_build_library_function_decl(get_identifier (PREFIX("st_iolength")),
382 void_type_node, 1, dt_parm_type);
384 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_wait].type);
385 iocall[IOCALL_WAIT] =
386 gfc_build_library_function_decl (get_identifier (PREFIX("st_wait")),
387 gfc_int4_type_node, 1, parm_type);
389 parm_type = build_pointer_type (st_parameter[IOPARM_ptype_filepos].type);
390 iocall[IOCALL_REWIND] =
391 gfc_build_library_function_decl (get_identifier (PREFIX("st_rewind")),
392 gfc_int4_type_node, 1, parm_type);
394 iocall[IOCALL_BACKSPACE] =
395 gfc_build_library_function_decl (get_identifier (PREFIX("st_backspace")),
396 gfc_int4_type_node, 1, parm_type);
398 iocall[IOCALL_ENDFILE] =
399 gfc_build_library_function_decl (get_identifier (PREFIX("st_endfile")),
400 gfc_int4_type_node, 1, parm_type);
402 iocall[IOCALL_FLUSH] =
403 gfc_build_library_function_decl (get_identifier (PREFIX("st_flush")),
404 gfc_int4_type_node, 1, parm_type);
406 /* Library helpers */
408 iocall[IOCALL_READ_DONE] =
409 gfc_build_library_function_decl (get_identifier (PREFIX("st_read_done")),
410 gfc_int4_type_node, 1, dt_parm_type);
412 iocall[IOCALL_WRITE_DONE] =
413 gfc_build_library_function_decl (get_identifier (PREFIX("st_write_done")),
414 gfc_int4_type_node, 1, dt_parm_type);
416 iocall[IOCALL_IOLENGTH_DONE] =
417 gfc_build_library_function_decl (get_identifier (PREFIX("st_iolength_done")),
418 gfc_int4_type_node, 1, dt_parm_type);
421 iocall[IOCALL_SET_NML_VAL] =
422 gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var")),
423 void_type_node, 6, dt_parm_type,
424 pvoid_type_node, pvoid_type_node,
425 gfc_int4_type_node, gfc_charlen_type_node,
428 iocall[IOCALL_SET_NML_VAL_DIM] =
429 gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_dim")),
430 void_type_node, 5, dt_parm_type,
431 gfc_int4_type_node, gfc_array_index_type,
432 gfc_array_index_type, gfc_array_index_type);
436 /* Generate code to store an integer constant into the
437 st_parameter_XXX structure. */
440 set_parameter_const (stmtblock_t *block, tree var, enum iofield type,
444 gfc_st_parameter_field *p = &st_parameter_field[type];
446 if (p->param_type == IOPARM_ptype_common)
447 var = fold_build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type,
448 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
449 tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field), var, p->field,
451 gfc_add_modify (block, tmp, build_int_cst (TREE_TYPE (p->field), val));
456 /* Generate code to store a non-string I/O parameter into the
457 st_parameter_XXX structure. This is a pass by value. */
460 set_parameter_value (stmtblock_t *block, tree var, enum iofield type,
465 gfc_st_parameter_field *p = &st_parameter_field[type];
466 tree dest_type = TREE_TYPE (p->field);
468 gfc_init_se (&se, NULL);
469 gfc_conv_expr_val (&se, e);
471 /* If we're storing a UNIT number, we need to check it first. */
472 if (type == IOPARM_common_unit && e->ts.kind > 4)
477 /* Don't evaluate the UNIT number multiple times. */
478 se.expr = gfc_evaluate_now (se.expr, &se.pre);
480 /* UNIT numbers should be greater than the min. */
481 i = gfc_validate_kind (BT_INTEGER, 4, false);
482 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].pedantic_min_int, 4);
483 cond = fold_build2 (LT_EXPR, boolean_type_node, se.expr,
484 fold_convert (TREE_TYPE (se.expr), val));
485 gfc_trans_io_runtime_check (cond, var, LIBERROR_BAD_UNIT,
486 "Unit number in I/O statement too small",
489 /* UNIT numbers should be less than the max. */
490 val = gfc_conv_mpz_to_tree (gfc_integer_kinds[i].huge, 4);
491 cond = fold_build2 (GT_EXPR, boolean_type_node, se.expr,
492 fold_convert (TREE_TYPE (se.expr), val));
493 gfc_trans_io_runtime_check (cond, var, LIBERROR_BAD_UNIT,
494 "Unit number in I/O statement too large",
499 se.expr = convert (dest_type, se.expr);
500 gfc_add_block_to_block (block, &se.pre);
502 if (p->param_type == IOPARM_ptype_common)
503 var = fold_build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type,
504 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
506 tmp = fold_build3 (COMPONENT_REF, dest_type, var, p->field, NULL_TREE);
507 gfc_add_modify (block, tmp, se.expr);
512 /* Generate code to store a non-string I/O parameter into the
513 st_parameter_XXX structure. This is pass by reference. */
516 set_parameter_ref (stmtblock_t *block, stmtblock_t *postblock,
517 tree var, enum iofield type, gfc_expr *e)
521 gfc_st_parameter_field *p = &st_parameter_field[type];
523 gcc_assert (e->ts.type == BT_INTEGER || e->ts.type == BT_LOGICAL);
524 gfc_init_se (&se, NULL);
525 gfc_conv_expr_lhs (&se, e);
527 gfc_add_block_to_block (block, &se.pre);
529 if (TYPE_MODE (TREE_TYPE (se.expr))
530 == TYPE_MODE (TREE_TYPE (TREE_TYPE (p->field))))
532 addr = convert (TREE_TYPE (p->field), gfc_build_addr_expr (NULL_TREE, se.expr));
534 /* If this is for the iostat variable initialize the
535 user variable to LIBERROR_OK which is zero. */
536 if (type == IOPARM_common_iostat)
537 gfc_add_modify (block, se.expr,
538 build_int_cst (TREE_TYPE (se.expr), LIBERROR_OK));
542 /* The type used by the library has different size
543 from the type of the variable supplied by the user.
544 Need to use a temporary. */
545 tree tmpvar = gfc_create_var (TREE_TYPE (TREE_TYPE (p->field)),
546 st_parameter_field[type].name);
548 /* If this is for the iostat variable, initialize the
549 user variable to LIBERROR_OK which is zero. */
550 if (type == IOPARM_common_iostat)
551 gfc_add_modify (block, tmpvar,
552 build_int_cst (TREE_TYPE (tmpvar), LIBERROR_OK));
554 addr = gfc_build_addr_expr (NULL_TREE, tmpvar);
555 /* After the I/O operation, we set the variable from the temporary. */
556 tmp = convert (TREE_TYPE (se.expr), tmpvar);
557 gfc_add_modify (postblock, se.expr, tmp);
560 if (p->param_type == IOPARM_ptype_common)
561 var = fold_build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type,
562 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
563 tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
564 var, p->field, NULL_TREE);
565 gfc_add_modify (block, tmp, addr);
569 /* Given an array expr, find its address and length to get a string. If the
570 array is full, the string's address is the address of array's first element
571 and the length is the size of the whole array. If it is an element, the
572 string's address is the element's address and the length is the rest size of
576 gfc_convert_array_to_string (gfc_se * se, gfc_expr * e)
582 tree type, array, tmp;
586 /* If it is an element, we need its address and size of the rest. */
587 gcc_assert (e->expr_type == EXPR_VARIABLE);
588 gcc_assert (e->ref->u.ar.type == AR_ELEMENT);
589 sym = e->symtree->n.sym;
590 rank = sym->as->rank - 1;
591 gfc_conv_expr (se, e);
593 array = sym->backend_decl;
594 type = TREE_TYPE (array);
596 if (GFC_ARRAY_TYPE_P (type))
597 size = GFC_TYPE_ARRAY_SIZE (type);
600 gcc_assert (GFC_DESCRIPTOR_TYPE_P (type));
601 size = gfc_conv_array_stride (array, rank);
602 tmp = fold_build2 (MINUS_EXPR, gfc_array_index_type,
603 gfc_conv_array_ubound (array, rank),
604 gfc_conv_array_lbound (array, rank));
605 tmp = fold_build2 (PLUS_EXPR, gfc_array_index_type, tmp,
607 size = fold_build2 (MULT_EXPR, gfc_array_index_type, tmp, size);
611 size = fold_build2 (MINUS_EXPR, gfc_array_index_type, size,
612 TREE_OPERAND (se->expr, 1));
613 se->expr = gfc_build_addr_expr (NULL_TREE, se->expr);
614 tmp = TYPE_SIZE_UNIT (gfc_get_element_type (type));
615 size = fold_build2 (MULT_EXPR, gfc_array_index_type, size,
616 fold_convert (gfc_array_index_type, tmp));
617 se->string_length = fold_convert (gfc_charlen_type_node, size);
621 gfc_conv_array_parameter (se, e, gfc_walk_expr (e), 1, NULL, NULL, &size);
622 se->string_length = fold_convert (gfc_charlen_type_node, size);
626 /* Generate code to store a string and its length into the
627 st_parameter_XXX structure. */
630 set_string (stmtblock_t * block, stmtblock_t * postblock, tree var,
631 enum iofield type, gfc_expr * e)
637 gfc_st_parameter_field *p = &st_parameter_field[type];
639 gfc_init_se (&se, NULL);
641 if (p->param_type == IOPARM_ptype_common)
642 var = fold_build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type,
643 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
644 io = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
645 var, p->field, NULL_TREE);
646 len = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field_len),
647 var, p->field_len, NULL_TREE);
649 /* Integer variable assigned a format label. */
650 if (e->ts.type == BT_INTEGER
652 && e->symtree->n.sym->attr.assign == 1)
657 gfc_conv_label_variable (&se, e);
658 tmp = GFC_DECL_STRING_LEN (se.expr);
659 cond = fold_build2 (LT_EXPR, boolean_type_node,
660 tmp, build_int_cst (TREE_TYPE (tmp), 0));
662 asprintf(&msg, "Label assigned to variable '%s' (%%ld) is not a format "
663 "label", e->symtree->name);
664 gfc_trans_runtime_check (true, false, cond, &se.pre, &e->where, msg,
665 fold_convert (long_integer_type_node, tmp));
668 gfc_add_modify (&se.pre, io,
669 fold_convert (TREE_TYPE (io), GFC_DECL_ASSIGN_ADDR (se.expr)));
670 gfc_add_modify (&se.pre, len, GFC_DECL_STRING_LEN (se.expr));
674 /* General character. */
675 if (e->ts.type == BT_CHARACTER && e->rank == 0)
676 gfc_conv_expr (&se, e);
677 /* Array assigned Hollerith constant or character array. */
678 else if (e->rank > 0 || (e->symtree && e->symtree->n.sym->as->rank > 0))
679 gfc_convert_array_to_string (&se, e);
683 gfc_conv_string_parameter (&se);
684 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), se.expr));
685 gfc_add_modify (&se.pre, len, se.string_length);
688 gfc_add_block_to_block (block, &se.pre);
689 gfc_add_block_to_block (postblock, &se.post);
694 /* Generate code to store the character (array) and the character length
695 for an internal unit. */
698 set_internal_unit (stmtblock_t * block, stmtblock_t * post_block,
699 tree var, gfc_expr * e)
706 gfc_st_parameter_field *p;
709 gfc_init_se (&se, NULL);
711 p = &st_parameter_field[IOPARM_dt_internal_unit];
713 io = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
714 var, p->field, NULL_TREE);
715 len = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field_len),
716 var, p->field_len, NULL_TREE);
717 p = &st_parameter_field[IOPARM_dt_internal_unit_desc];
718 desc = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
719 var, p->field, NULL_TREE);
721 gcc_assert (e->ts.type == BT_CHARACTER);
723 /* Character scalars. */
726 gfc_conv_expr (&se, e);
727 gfc_conv_string_parameter (&se);
729 se.expr = build_int_cst (pchar_type_node, 0);
732 /* Character array. */
733 else if (e->rank > 0)
735 se.ss = gfc_walk_expr (e);
737 if (is_subref_array (e))
739 /* Use a temporary for components of arrays of derived types
740 or substring array references. */
741 gfc_conv_subref_array_arg (&se, e, 0,
742 last_dt == READ ? INTENT_IN : INTENT_OUT);
743 tmp = build_fold_indirect_ref (se.expr);
744 se.expr = gfc_build_addr_expr (pchar_type_node, tmp);
745 tmp = gfc_conv_descriptor_data_get (tmp);
749 /* Return the data pointer and rank from the descriptor. */
750 gfc_conv_expr_descriptor (&se, e, se.ss);
751 tmp = gfc_conv_descriptor_data_get (se.expr);
752 se.expr = gfc_build_addr_expr (pchar_type_node, se.expr);
758 /* The cast is needed for character substrings and the descriptor
760 gfc_add_modify (&se.pre, io, fold_convert (TREE_TYPE (io), tmp));
761 gfc_add_modify (&se.pre, len,
762 fold_convert (TREE_TYPE (len), se.string_length));
763 gfc_add_modify (&se.pre, desc, se.expr);
765 gfc_add_block_to_block (block, &se.pre);
766 gfc_add_block_to_block (post_block, &se.post);
770 /* Add a case to a IO-result switch. */
773 add_case (int label_value, gfc_st_label * label, stmtblock_t * body)
778 return; /* No label, no case */
780 value = build_int_cst (NULL_TREE, label_value);
782 /* Make a backend label for this case. */
783 tmp = gfc_build_label_decl (NULL_TREE);
785 /* And the case itself. */
786 tmp = build3_v (CASE_LABEL_EXPR, value, NULL_TREE, tmp);
787 gfc_add_expr_to_block (body, tmp);
789 /* Jump to the label. */
790 tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label));
791 gfc_add_expr_to_block (body, tmp);
795 /* Generate a switch statement that branches to the correct I/O
796 result label. The last statement of an I/O call stores the
797 result into a variable because there is often cleanup that
798 must be done before the switch, so a temporary would have to
799 be created anyway. */
802 io_result (stmtblock_t * block, tree var, gfc_st_label * err_label,
803 gfc_st_label * end_label, gfc_st_label * eor_label)
807 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_flags];
809 /* If no labels are specified, ignore the result instead
810 of building an empty switch. */
811 if (err_label == NULL
813 && eor_label == NULL)
816 /* Build a switch statement. */
817 gfc_start_block (&body);
819 /* The label values here must be the same as the values
820 in the library_return enum in the runtime library */
821 add_case (1, err_label, &body);
822 add_case (2, end_label, &body);
823 add_case (3, eor_label, &body);
825 tmp = gfc_finish_block (&body);
827 var = fold_build3 (COMPONENT_REF, st_parameter[IOPARM_ptype_common].type,
828 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
829 rc = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
830 var, p->field, NULL_TREE);
831 rc = fold_build2 (BIT_AND_EXPR, TREE_TYPE (rc),
832 rc, build_int_cst (TREE_TYPE (rc),
833 IOPARM_common_libreturn_mask));
835 tmp = build3_v (SWITCH_EXPR, rc, tmp, NULL_TREE);
837 gfc_add_expr_to_block (block, tmp);
841 /* Store the current file and line number to variables so that if a
842 library call goes awry, we can tell the user where the problem is. */
845 set_error_locus (stmtblock_t * block, tree var, locus * where)
848 tree str, locus_file;
850 gfc_st_parameter_field *p = &st_parameter_field[IOPARM_common_filename];
852 locus_file = fold_build3 (COMPONENT_REF,
853 st_parameter[IOPARM_ptype_common].type,
854 var, TYPE_FIELDS (TREE_TYPE (var)), NULL_TREE);
855 locus_file = fold_build3 (COMPONENT_REF, TREE_TYPE (p->field),
856 locus_file, p->field, NULL_TREE);
858 str = gfc_build_cstring_const (f->filename);
860 str = gfc_build_addr_expr (pchar_type_node, str);
861 gfc_add_modify (block, locus_file, str);
863 line = LOCATION_LINE (where->lb->location);
864 set_parameter_const (block, var, IOPARM_common_line, line);
868 /* Translate an OPEN statement. */
871 gfc_trans_open (gfc_code * code)
873 stmtblock_t block, post_block;
876 unsigned int mask = 0;
878 gfc_start_block (&block);
879 gfc_init_block (&post_block);
881 var = gfc_create_var (st_parameter[IOPARM_ptype_open].type, "open_parm");
883 set_error_locus (&block, var, &code->loc);
887 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
891 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
895 mask |= IOPARM_common_err;
898 mask |= set_string (&block, &post_block, var, IOPARM_open_file, p->file);
901 mask |= set_string (&block, &post_block, var, IOPARM_open_status,
905 mask |= set_string (&block, &post_block, var, IOPARM_open_access,
909 mask |= set_string (&block, &post_block, var, IOPARM_open_form, p->form);
912 mask |= set_parameter_value (&block, var, IOPARM_open_recl_in, p->recl);
915 mask |= set_string (&block, &post_block, var, IOPARM_open_blank,
919 mask |= set_string (&block, &post_block, var, IOPARM_open_position,
923 mask |= set_string (&block, &post_block, var, IOPARM_open_action,
927 mask |= set_string (&block, &post_block, var, IOPARM_open_delim,
931 mask |= set_string (&block, &post_block, var, IOPARM_open_pad, p->pad);
934 mask |= set_string (&block, &post_block, var, IOPARM_open_decimal,
938 mask |= set_string (&block, &post_block, var, IOPARM_open_encoding,
942 mask |= set_string (&block, &post_block, var, IOPARM_open_round, p->round);
945 mask |= set_string (&block, &post_block, var, IOPARM_open_sign, p->sign);
948 mask |= set_string (&block, &post_block, var, IOPARM_open_asynchronous,
952 mask |= set_string (&block, &post_block, var, IOPARM_open_convert,
956 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_open_newunit,
959 set_parameter_const (&block, var, IOPARM_common_flags, mask);
962 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
964 set_parameter_const (&block, var, IOPARM_common_unit, 0);
966 tmp = gfc_build_addr_expr (NULL_TREE, var);
967 tmp = build_call_expr (iocall[IOCALL_OPEN], 1, tmp);
968 gfc_add_expr_to_block (&block, tmp);
970 gfc_add_block_to_block (&block, &post_block);
972 io_result (&block, var, p->err, NULL, NULL);
974 return gfc_finish_block (&block);
978 /* Translate a CLOSE statement. */
981 gfc_trans_close (gfc_code * code)
983 stmtblock_t block, post_block;
986 unsigned int mask = 0;
988 gfc_start_block (&block);
989 gfc_init_block (&post_block);
991 var = gfc_create_var (st_parameter[IOPARM_ptype_close].type, "close_parm");
993 set_error_locus (&block, var, &code->loc);
997 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1001 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1005 mask |= IOPARM_common_err;
1008 mask |= set_string (&block, &post_block, var, IOPARM_close_status,
1011 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1014 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1016 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1018 tmp = gfc_build_addr_expr (NULL_TREE, var);
1019 tmp = build_call_expr (iocall[IOCALL_CLOSE], 1, tmp);
1020 gfc_add_expr_to_block (&block, tmp);
1022 gfc_add_block_to_block (&block, &post_block);
1024 io_result (&block, var, p->err, NULL, NULL);
1026 return gfc_finish_block (&block);
1030 /* Common subroutine for building a file positioning statement. */
1033 build_filepos (tree function, gfc_code * code)
1035 stmtblock_t block, post_block;
1038 unsigned int mask = 0;
1040 p = code->ext.filepos;
1042 gfc_start_block (&block);
1043 gfc_init_block (&post_block);
1045 var = gfc_create_var (st_parameter[IOPARM_ptype_filepos].type,
1048 set_error_locus (&block, var, &code->loc);
1051 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1055 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1059 mask |= IOPARM_common_err;
1061 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1064 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1066 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1068 tmp = gfc_build_addr_expr (NULL_TREE, var);
1069 tmp = build_call_expr (function, 1, tmp);
1070 gfc_add_expr_to_block (&block, tmp);
1072 gfc_add_block_to_block (&block, &post_block);
1074 io_result (&block, var, p->err, NULL, NULL);
1076 return gfc_finish_block (&block);
1080 /* Translate a BACKSPACE statement. */
1083 gfc_trans_backspace (gfc_code * code)
1085 return build_filepos (iocall[IOCALL_BACKSPACE], code);
1089 /* Translate an ENDFILE statement. */
1092 gfc_trans_endfile (gfc_code * code)
1094 return build_filepos (iocall[IOCALL_ENDFILE], code);
1098 /* Translate a REWIND statement. */
1101 gfc_trans_rewind (gfc_code * code)
1103 return build_filepos (iocall[IOCALL_REWIND], code);
1107 /* Translate a FLUSH statement. */
1110 gfc_trans_flush (gfc_code * code)
1112 return build_filepos (iocall[IOCALL_FLUSH], code);
1116 /* Create a dummy iostat variable to catch any error due to bad unit. */
1119 create_dummy_iostat (void)
1124 gfc_get_ha_sym_tree ("@iostat", &st);
1125 st->n.sym->ts.type = BT_INTEGER;
1126 st->n.sym->ts.kind = gfc_default_integer_kind;
1127 gfc_set_sym_referenced (st->n.sym);
1128 gfc_commit_symbol (st->n.sym);
1129 st->n.sym->backend_decl
1130 = gfc_create_var (gfc_get_int_type (st->n.sym->ts.kind),
1133 e = gfc_get_expr ();
1134 e->expr_type = EXPR_VARIABLE;
1136 e->ts.type = BT_INTEGER;
1137 e->ts.kind = st->n.sym->ts.kind;
1143 /* Translate the non-IOLENGTH form of an INQUIRE statement. */
1146 gfc_trans_inquire (gfc_code * code)
1148 stmtblock_t block, post_block;
1151 unsigned int mask = 0, mask2 = 0;
1153 gfc_start_block (&block);
1154 gfc_init_block (&post_block);
1156 var = gfc_create_var (st_parameter[IOPARM_ptype_inquire].type,
1159 set_error_locus (&block, var, &code->loc);
1160 p = code->ext.inquire;
1163 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1167 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1171 mask |= IOPARM_common_err;
1174 if (p->unit && p->file)
1175 gfc_error ("INQUIRE statement at %L cannot contain both FILE and UNIT specifiers", &code->loc);
1178 mask |= set_string (&block, &post_block, var, IOPARM_inquire_file,
1183 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_exist,
1186 if (p->unit && !p->iostat)
1188 p->iostat = create_dummy_iostat ();
1189 mask |= set_parameter_ref (&block, &post_block, var,
1190 IOPARM_common_iostat, p->iostat);
1195 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_opened,
1199 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_number,
1203 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_named,
1207 mask |= set_string (&block, &post_block, var, IOPARM_inquire_name,
1211 mask |= set_string (&block, &post_block, var, IOPARM_inquire_access,
1215 mask |= set_string (&block, &post_block, var, IOPARM_inquire_sequential,
1219 mask |= set_string (&block, &post_block, var, IOPARM_inquire_direct,
1223 mask |= set_string (&block, &post_block, var, IOPARM_inquire_form,
1227 mask |= set_string (&block, &post_block, var, IOPARM_inquire_formatted,
1231 mask |= set_string (&block, &post_block, var, IOPARM_inquire_unformatted,
1235 mask |= set_parameter_ref (&block, &post_block, var,
1236 IOPARM_inquire_recl_out, p->recl);
1239 mask |= set_parameter_ref (&block, &post_block, var,
1240 IOPARM_inquire_nextrec, p->nextrec);
1243 mask |= set_string (&block, &post_block, var, IOPARM_inquire_blank,
1247 mask |= set_string (&block, &post_block, var, IOPARM_inquire_delim,
1251 mask |= set_string (&block, &post_block, var, IOPARM_inquire_position,
1255 mask |= set_string (&block, &post_block, var, IOPARM_inquire_action,
1259 mask |= set_string (&block, &post_block, var, IOPARM_inquire_read,
1263 mask |= set_string (&block, &post_block, var, IOPARM_inquire_write,
1267 mask |= set_string (&block, &post_block, var, IOPARM_inquire_readwrite,
1271 mask |= set_string (&block, &post_block, var, IOPARM_inquire_pad,
1275 mask |= set_string (&block, &post_block, var, IOPARM_inquire_convert,
1279 mask |= set_parameter_ref (&block, &post_block, var,
1280 IOPARM_inquire_strm_pos_out, p->strm_pos);
1282 /* The second series of flags. */
1283 if (p->asynchronous)
1284 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_asynchronous,
1288 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_decimal,
1292 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_encoding,
1296 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_round,
1300 mask2 |= set_string (&block, &post_block, var, IOPARM_inquire_sign,
1304 mask2 |= set_parameter_ref (&block, &post_block, var,
1305 IOPARM_inquire_pending, p->pending);
1308 mask2 |= set_parameter_ref (&block, &post_block, var, IOPARM_inquire_size,
1312 mask2 |= set_parameter_ref (&block, &post_block,var, IOPARM_inquire_id,
1316 mask |= set_parameter_const (&block, var, IOPARM_inquire_flags2, mask2);
1318 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1321 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1323 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1325 tmp = gfc_build_addr_expr (NULL_TREE, var);
1326 tmp = build_call_expr (iocall[IOCALL_INQUIRE], 1, tmp);
1327 gfc_add_expr_to_block (&block, tmp);
1329 gfc_add_block_to_block (&block, &post_block);
1331 io_result (&block, var, p->err, NULL, NULL);
1333 return gfc_finish_block (&block);
1338 gfc_trans_wait (gfc_code * code)
1340 stmtblock_t block, post_block;
1343 unsigned int mask = 0;
1345 gfc_start_block (&block);
1346 gfc_init_block (&post_block);
1348 var = gfc_create_var (st_parameter[IOPARM_ptype_wait].type,
1351 set_error_locus (&block, var, &code->loc);
1354 /* Set parameters here. */
1356 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1360 mask |= set_parameter_ref (&block, &post_block, var, IOPARM_common_iostat,
1364 mask |= IOPARM_common_err;
1367 mask |= set_parameter_value (&block, var, IOPARM_wait_id, p->id);
1369 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1372 set_parameter_value (&block, var, IOPARM_common_unit, p->unit);
1374 tmp = gfc_build_addr_expr (NULL_TREE, var);
1375 tmp = build_call_expr (iocall[IOCALL_WAIT], 1, tmp);
1376 gfc_add_expr_to_block (&block, tmp);
1378 gfc_add_block_to_block (&block, &post_block);
1380 io_result (&block, var, p->err, NULL, NULL);
1382 return gfc_finish_block (&block);
1387 gfc_new_nml_name_expr (const char * name)
1389 gfc_expr * nml_name;
1391 nml_name = gfc_get_expr();
1392 nml_name->ref = NULL;
1393 nml_name->expr_type = EXPR_CONSTANT;
1394 nml_name->ts.kind = gfc_default_character_kind;
1395 nml_name->ts.type = BT_CHARACTER;
1396 nml_name->value.character.length = strlen(name);
1397 nml_name->value.character.string = gfc_char_to_widechar (name);
1402 /* nml_full_name builds up the fully qualified name of a
1403 derived type component. */
1406 nml_full_name (const char* var_name, const char* cmp_name)
1408 int full_name_length;
1411 full_name_length = strlen (var_name) + strlen (cmp_name) + 1;
1412 full_name = (char*)gfc_getmem (full_name_length + 1);
1413 strcpy (full_name, var_name);
1414 full_name = strcat (full_name, "%");
1415 full_name = strcat (full_name, cmp_name);
1419 /* nml_get_addr_expr builds an address expression from the
1420 gfc_symbol or gfc_component backend_decl's. An offset is
1421 provided so that the address of an element of an array of
1422 derived types is returned. This is used in the runtime to
1423 determine that span of the derived type. */
1426 nml_get_addr_expr (gfc_symbol * sym, gfc_component * c,
1429 tree decl = NULL_TREE;
1433 int dummy_arg_flagged;
1437 sym->attr.referenced = 1;
1438 decl = gfc_get_symbol_decl (sym);
1440 /* If this is the enclosing function declaration, use
1441 the fake result instead. */
1442 if (decl == current_function_decl)
1443 decl = gfc_get_fake_result_decl (sym, 0);
1444 else if (decl == DECL_CONTEXT (current_function_decl))
1445 decl = gfc_get_fake_result_decl (sym, 1);
1448 decl = c->backend_decl;
1450 gcc_assert (decl && ((TREE_CODE (decl) == FIELD_DECL
1451 || TREE_CODE (decl) == VAR_DECL
1452 || TREE_CODE (decl) == PARM_DECL)
1453 || TREE_CODE (decl) == COMPONENT_REF));
1457 /* Build indirect reference, if dummy argument. */
1459 dummy_arg_flagged = POINTER_TYPE_P (TREE_TYPE(tmp));
1461 itmp = (dummy_arg_flagged) ? build_fold_indirect_ref (tmp) : tmp;
1463 /* If an array, set flag and use indirect ref. if built. */
1465 array_flagged = (TREE_CODE (TREE_TYPE (itmp)) == ARRAY_TYPE
1466 && !TYPE_STRING_FLAG (TREE_TYPE (itmp)));
1471 /* Treat the component of a derived type, using base_addr for
1472 the derived type. */
1474 if (TREE_CODE (decl) == FIELD_DECL)
1475 tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (tmp),
1476 base_addr, tmp, NULL_TREE);
1478 /* If we have a derived type component, a reference to the first
1479 element of the array is built. This is done so that base_addr,
1480 used in the build of the component reference, always points to
1484 tmp = gfc_build_array_ref (tmp, gfc_index_zero_node, NULL);
1486 /* Now build the address expression. */
1488 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
1490 /* If scalar dummy, resolve indirect reference now. */
1492 if (dummy_arg_flagged && !array_flagged)
1493 tmp = build_fold_indirect_ref (tmp);
1495 gcc_assert (tmp && POINTER_TYPE_P (TREE_TYPE (tmp)));
1500 /* For an object VAR_NAME whose base address is BASE_ADDR, generate a
1501 call to iocall[IOCALL_SET_NML_VAL]. For derived type variable, recursively
1502 generate calls to iocall[IOCALL_SET_NML_VAL] for each component. */
1504 #define IARG(i) build_int_cst (gfc_array_index_type, i)
1507 transfer_namelist_element (stmtblock_t * block, const char * var_name,
1508 gfc_symbol * sym, gfc_component * c,
1511 gfc_typespec * ts = NULL;
1512 gfc_array_spec * as = NULL;
1513 tree addr_expr = NULL;
1523 gcc_assert (sym || c);
1525 /* Build the namelist object name. */
1527 string = gfc_build_cstring_const (var_name);
1528 string = gfc_build_addr_expr (pchar_type_node, string);
1530 /* Build ts, as and data address using symbol or component. */
1532 ts = (sym) ? &sym->ts : &c->ts;
1533 as = (sym) ? sym->as : c->as;
1535 addr_expr = nml_get_addr_expr (sym, c, base_addr);
1542 dt = TREE_TYPE ((sym) ? sym->backend_decl : c->backend_decl);
1543 dtype = gfc_get_dtype (dt);
1547 itype = GFC_DTYPE_UNKNOWN;
1553 itype = GFC_DTYPE_INTEGER;
1556 itype = GFC_DTYPE_LOGICAL;
1559 itype = GFC_DTYPE_REAL;
1562 itype = GFC_DTYPE_COMPLEX;
1565 itype = GFC_DTYPE_DERIVED;
1568 itype = GFC_DTYPE_CHARACTER;
1574 dtype = IARG (itype << GFC_DTYPE_TYPE_SHIFT);
1577 /* Build up the arguments for the transfer call.
1578 The call for the scalar part transfers:
1579 (address, name, type, kind or string_length, dtype) */
1581 dt_parm_addr = gfc_build_addr_expr (NULL_TREE, dt_parm);
1583 if (ts->type == BT_CHARACTER)
1584 tmp = ts->cl->backend_decl;
1586 tmp = build_int_cst (gfc_charlen_type_node, 0);
1587 tmp = build_call_expr (iocall[IOCALL_SET_NML_VAL], 6,
1588 dt_parm_addr, addr_expr, string,
1589 IARG (ts->kind), tmp, dtype);
1590 gfc_add_expr_to_block (block, tmp);
1592 /* If the object is an array, transfer rank times:
1593 (null pointer, name, stride, lbound, ubound) */
1595 for ( n_dim = 0 ; n_dim < rank ; n_dim++ )
1597 tmp = build_call_expr (iocall[IOCALL_SET_NML_VAL_DIM], 5,
1600 GFC_TYPE_ARRAY_STRIDE (dt, n_dim),
1601 GFC_TYPE_ARRAY_LBOUND (dt, n_dim),
1602 GFC_TYPE_ARRAY_UBOUND (dt, n_dim));
1603 gfc_add_expr_to_block (block, tmp);
1606 if (ts->type == BT_DERIVED)
1610 /* Provide the RECORD_TYPE to build component references. */
1612 tree expr = build_fold_indirect_ref (addr_expr);
1614 for (cmp = ts->derived->components; cmp; cmp = cmp->next)
1616 char *full_name = nml_full_name (var_name, cmp->name);
1617 transfer_namelist_element (block,
1620 gfc_free (full_name);
1627 /* Create a data transfer statement. Not all of the fields are valid
1628 for both reading and writing, but improper use has been filtered
1632 build_dt (tree function, gfc_code * code)
1634 stmtblock_t block, post_block, post_end_block, post_iu_block;
1639 unsigned int mask = 0;
1641 gfc_start_block (&block);
1642 gfc_init_block (&post_block);
1643 gfc_init_block (&post_end_block);
1644 gfc_init_block (&post_iu_block);
1646 var = gfc_create_var (st_parameter[IOPARM_ptype_dt].type, "dt_parm");
1648 set_error_locus (&block, var, &code->loc);
1650 if (last_dt == IOLENGTH)
1654 inq = code->ext.inquire;
1656 /* First check that preconditions are met. */
1657 gcc_assert (inq != NULL);
1658 gcc_assert (inq->iolength != NULL);
1660 /* Connect to the iolength variable. */
1661 mask |= set_parameter_ref (&block, &post_end_block, var,
1662 IOPARM_dt_iolength, inq->iolength);
1668 gcc_assert (dt != NULL);
1671 if (dt && dt->io_unit)
1673 if (dt->io_unit->ts.type == BT_CHARACTER)
1675 mask |= set_internal_unit (&block, &post_iu_block,
1677 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1681 set_parameter_const (&block, var, IOPARM_common_unit, 0);
1686 mask |= set_string (&block, &post_block, var, IOPARM_common_iomsg,
1690 mask |= set_parameter_ref (&block, &post_end_block, var,
1691 IOPARM_common_iostat, dt->iostat);
1694 mask |= IOPARM_common_err;
1697 mask |= IOPARM_common_eor;
1700 mask |= IOPARM_common_end;
1703 mask |= set_parameter_ref (&block, &post_end_block, var,
1704 IOPARM_dt_id, dt->id);
1707 mask |= set_parameter_value (&block, var, IOPARM_dt_pos, dt->pos);
1709 if (dt->asynchronous)
1710 mask |= set_string (&block, &post_block, var, IOPARM_dt_asynchronous,
1714 mask |= set_string (&block, &post_block, var, IOPARM_dt_blank,
1718 mask |= set_string (&block, &post_block, var, IOPARM_dt_decimal,
1722 mask |= set_string (&block, &post_block, var, IOPARM_dt_delim,
1726 mask |= set_string (&block, &post_block, var, IOPARM_dt_pad,
1730 mask |= set_string (&block, &post_block, var, IOPARM_dt_round,
1734 mask |= set_string (&block, &post_block, var, IOPARM_dt_sign,
1738 mask |= set_parameter_value (&block, var, IOPARM_dt_rec, dt->rec);
1741 mask |= set_string (&block, &post_block, var, IOPARM_dt_advance,
1744 if (dt->format_expr)
1745 mask |= set_string (&block, &post_end_block, var, IOPARM_dt_format,
1748 if (dt->format_label)
1750 if (dt->format_label == &format_asterisk)
1751 mask |= IOPARM_dt_list_format;
1753 mask |= set_string (&block, &post_block, var, IOPARM_dt_format,
1754 dt->format_label->format);
1758 mask |= set_parameter_ref (&block, &post_end_block, var,
1759 IOPARM_dt_size, dt->size);
1763 if (dt->format_expr || dt->format_label)
1764 gfc_internal_error ("build_dt: format with namelist");
1766 nmlname = gfc_new_nml_name_expr (dt->namelist->name);
1768 mask |= set_string (&block, &post_block, var, IOPARM_dt_namelist_name,
1771 if (last_dt == READ)
1772 mask |= IOPARM_dt_namelist_read_mode;
1774 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1778 for (nml = dt->namelist->namelist; nml; nml = nml->next)
1779 transfer_namelist_element (&block, nml->sym->name, nml->sym,
1783 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1785 if (dt->io_unit && dt->io_unit->ts.type == BT_INTEGER)
1786 set_parameter_value (&block, var, IOPARM_common_unit, dt->io_unit);
1789 set_parameter_const (&block, var, IOPARM_common_flags, mask);
1791 tmp = gfc_build_addr_expr (NULL_TREE, var);
1792 tmp = build_call_expr (function, 1, tmp);
1793 gfc_add_expr_to_block (&block, tmp);
1795 gfc_add_block_to_block (&block, &post_block);
1798 dt_post_end_block = &post_end_block;
1800 gfc_add_expr_to_block (&block, gfc_trans_code (code->block->next));
1802 gfc_add_block_to_block (&block, &post_iu_block);
1805 dt_post_end_block = NULL;
1807 return gfc_finish_block (&block);
1811 /* Translate the IOLENGTH form of an INQUIRE statement. We treat
1812 this as a third sort of data transfer statement, except that
1813 lengths are summed instead of actually transferring any data. */
1816 gfc_trans_iolength (gfc_code * code)
1819 return build_dt (iocall[IOCALL_IOLENGTH], code);
1823 /* Translate a READ statement. */
1826 gfc_trans_read (gfc_code * code)
1829 return build_dt (iocall[IOCALL_READ], code);
1833 /* Translate a WRITE statement */
1836 gfc_trans_write (gfc_code * code)
1839 return build_dt (iocall[IOCALL_WRITE], code);
1843 /* Finish a data transfer statement. */
1846 gfc_trans_dt_end (gfc_code * code)
1851 gfc_init_block (&block);
1856 function = iocall[IOCALL_READ_DONE];
1860 function = iocall[IOCALL_WRITE_DONE];
1864 function = iocall[IOCALL_IOLENGTH_DONE];
1871 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
1872 tmp = build_call_expr (function, 1, tmp);
1873 gfc_add_expr_to_block (&block, tmp);
1874 gfc_add_block_to_block (&block, dt_post_end_block);
1875 gfc_init_block (dt_post_end_block);
1877 if (last_dt != IOLENGTH)
1879 gcc_assert (code->ext.dt != NULL);
1880 io_result (&block, dt_parm, code->ext.dt->err,
1881 code->ext.dt->end, code->ext.dt->eor);
1884 return gfc_finish_block (&block);
1888 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr, gfc_code * code);
1890 /* Given an array field in a derived type variable, generate the code
1891 for the loop that iterates over array elements, and the code that
1892 accesses those array elements. Use transfer_expr to generate code
1893 for transferring that element. Because elements may also be
1894 derived types, transfer_expr and transfer_array_component are mutually
1898 transfer_array_component (tree expr, gfc_component * cm, locus * where)
1908 gfc_start_block (&block);
1909 gfc_init_se (&se, NULL);
1911 /* Create and initialize Scalarization Status. Unlike in
1912 gfc_trans_transfer, we can't simply use gfc_walk_expr to take
1913 care of this task, because we don't have a gfc_expr at hand.
1914 Build one manually, as in gfc_trans_subarray_assign. */
1917 ss->type = GFC_SS_COMPONENT;
1919 ss->shape = gfc_get_shape (cm->as->rank);
1920 ss->next = gfc_ss_terminator;
1921 ss->data.info.dimen = cm->as->rank;
1922 ss->data.info.descriptor = expr;
1923 ss->data.info.data = gfc_conv_array_data (expr);
1924 ss->data.info.offset = gfc_conv_array_offset (expr);
1925 for (n = 0; n < cm->as->rank; n++)
1927 ss->data.info.dim[n] = n;
1928 ss->data.info.start[n] = gfc_conv_array_lbound (expr, n);
1929 ss->data.info.stride[n] = gfc_index_one_node;
1931 mpz_init (ss->shape[n]);
1932 mpz_sub (ss->shape[n], cm->as->upper[n]->value.integer,
1933 cm->as->lower[n]->value.integer);
1934 mpz_add_ui (ss->shape[n], ss->shape[n], 1);
1937 /* Once we got ss, we use scalarizer to create the loop. */
1939 gfc_init_loopinfo (&loop);
1940 gfc_add_ss_to_loop (&loop, ss);
1941 gfc_conv_ss_startstride (&loop);
1942 gfc_conv_loop_setup (&loop, where);
1943 gfc_mark_ss_chain_used (ss, 1);
1944 gfc_start_scalarized_body (&loop, &body);
1946 gfc_copy_loopinfo_to_se (&se, &loop);
1949 /* gfc_conv_tmp_array_ref assumes that se.expr contains the array. */
1951 gfc_conv_tmp_array_ref (&se);
1953 /* Now se.expr contains an element of the array. Take the address and pass
1954 it to the IO routines. */
1955 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
1956 transfer_expr (&se, &cm->ts, tmp, NULL);
1958 /* We are done now with the loop body. Wrap up the scalarizer and
1961 gfc_add_block_to_block (&body, &se.pre);
1962 gfc_add_block_to_block (&body, &se.post);
1964 gfc_trans_scalarizing_loops (&loop, &body);
1966 gfc_add_block_to_block (&block, &loop.pre);
1967 gfc_add_block_to_block (&block, &loop.post);
1969 for (n = 0; n < cm->as->rank; n++)
1970 mpz_clear (ss->shape[n]);
1971 gfc_free (ss->shape);
1973 gfc_cleanup_loop (&loop);
1975 return gfc_finish_block (&block);
1978 /* Generate the call for a scalar transfer node. */
1981 transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr, gfc_code * code)
1983 tree tmp, function, arg2, arg3, field, expr;
1987 /* It is possible to get a C_NULL_PTR or C_NULL_FUNPTR expression here if
1988 the user says something like: print *, 'c_null_ptr: ', c_null_ptr
1989 We need to translate the expression to a constant if it's either
1990 C_NULL_PTR or C_NULL_FUNPTR. We could also get a user variable of
1991 type C_PTR or C_FUNPTR, in which case the ts->type may no longer be
1992 BT_DERIVED (could have been changed by gfc_conv_expr). */
1993 if ((ts->type == BT_DERIVED && ts->is_iso_c == 1 && ts->derived != NULL)
1994 || (ts->derived != NULL && ts->derived->ts.is_iso_c == 1))
1996 /* C_PTR and C_FUNPTR have private components which means they can not
1997 be printed. However, if -std=gnu and not -pedantic, allow
1998 the component to be printed to help debugging. */
1999 if (gfc_notification_std (GFC_STD_GNU) != SILENT)
2001 gfc_error_now ("Derived type '%s' at %L has PRIVATE components",
2002 ts->derived->name, code != NULL ? &(code->loc) :
2003 &gfc_current_locus);
2007 ts->type = ts->derived->ts.type;
2008 ts->kind = ts->derived->ts.kind;
2009 ts->f90_type = ts->derived->ts.f90_type;
2020 arg2 = build_int_cst (NULL_TREE, kind);
2021 function = iocall[IOCALL_X_INTEGER];
2025 arg2 = build_int_cst (NULL_TREE, kind);
2026 function = iocall[IOCALL_X_REAL];
2030 arg2 = build_int_cst (NULL_TREE, kind);
2031 function = iocall[IOCALL_X_COMPLEX];
2035 arg2 = build_int_cst (NULL_TREE, kind);
2036 function = iocall[IOCALL_X_LOGICAL];
2042 if (se->string_length)
2043 arg2 = se->string_length;
2046 tmp = build_fold_indirect_ref (addr_expr);
2047 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2048 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2049 arg2 = fold_convert (gfc_charlen_type_node, arg2);
2051 arg3 = build_int_cst (NULL_TREE, kind);
2052 function = iocall[IOCALL_X_CHARACTER_WIDE];
2053 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2054 tmp = build_call_expr (function, 4, tmp, addr_expr, arg2, arg3);
2055 gfc_add_expr_to_block (&se->pre, tmp);
2056 gfc_add_block_to_block (&se->pre, &se->post);
2061 if (se->string_length)
2062 arg2 = se->string_length;
2065 tmp = build_fold_indirect_ref (addr_expr);
2066 gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE);
2067 arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp)));
2069 function = iocall[IOCALL_X_CHARACTER];
2073 /* Recurse into the elements of the derived type. */
2074 expr = gfc_evaluate_now (addr_expr, &se->pre);
2075 expr = build_fold_indirect_ref (expr);
2077 for (c = ts->derived->components; c; c = c->next)
2079 field = c->backend_decl;
2080 gcc_assert (field && TREE_CODE (field) == FIELD_DECL);
2082 tmp = fold_build3 (COMPONENT_REF, TREE_TYPE (field),
2083 expr, field, NULL_TREE);
2085 if (c->attr.dimension)
2087 tmp = transfer_array_component (tmp, c, & code->loc);
2088 gfc_add_expr_to_block (&se->pre, tmp);
2092 if (!c->attr.pointer)
2093 tmp = gfc_build_addr_expr (NULL_TREE, tmp);
2094 transfer_expr (se, &c->ts, tmp, code);
2100 internal_error ("Bad IO basetype (%d)", ts->type);
2103 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2104 tmp = build_call_expr (function, 3, tmp, addr_expr, arg2);
2105 gfc_add_expr_to_block (&se->pre, tmp);
2106 gfc_add_block_to_block (&se->pre, &se->post);
2111 /* Generate a call to pass an array descriptor to the IO library. The
2112 array should be of one of the intrinsic types. */
2115 transfer_array_desc (gfc_se * se, gfc_typespec * ts, tree addr_expr)
2117 tree tmp, charlen_arg, kind_arg;
2119 if (ts->type == BT_CHARACTER)
2120 charlen_arg = se->string_length;
2122 charlen_arg = build_int_cst (NULL_TREE, 0);
2124 kind_arg = build_int_cst (NULL_TREE, ts->kind);
2126 tmp = gfc_build_addr_expr (NULL_TREE, dt_parm);
2127 tmp = build_call_expr (iocall[IOCALL_X_ARRAY], 4,
2128 tmp, addr_expr, kind_arg, charlen_arg);
2129 gfc_add_expr_to_block (&se->pre, tmp);
2130 gfc_add_block_to_block (&se->pre, &se->post);
2134 /* gfc_trans_transfer()-- Translate a TRANSFER code node */
2137 gfc_trans_transfer (gfc_code * code)
2139 stmtblock_t block, body;
2148 gfc_start_block (&block);
2149 gfc_init_block (&body);
2152 ss = gfc_walk_expr (expr);
2155 gfc_init_se (&se, NULL);
2157 if (ss == gfc_ss_terminator)
2159 /* Transfer a scalar value. */
2160 gfc_conv_expr_reference (&se, expr);
2161 transfer_expr (&se, &expr->ts, se.expr, code);
2165 /* Transfer an array. If it is an array of an intrinsic
2166 type, pass the descriptor to the library. Otherwise
2167 scalarize the transfer. */
2170 for (ref = expr->ref; ref && ref->type != REF_ARRAY;
2172 gcc_assert (ref->type == REF_ARRAY);
2175 if (expr->ts.type != BT_DERIVED
2176 && ref && ref->next == NULL
2177 && !is_subref_array (expr))
2179 bool seen_vector = false;
2181 if (ref && ref->u.ar.type == AR_SECTION)
2183 for (n = 0; n < ref->u.ar.dimen; n++)
2184 if (ref->u.ar.dimen_type[n] == DIMEN_VECTOR)
2188 if (seen_vector && last_dt == READ)
2190 /* Create a temp, read to that and copy it back. */
2191 gfc_conv_subref_array_arg (&se, expr, 0, INTENT_OUT);
2196 /* Get the descriptor. */
2197 gfc_conv_expr_descriptor (&se, expr, ss);
2198 tmp = gfc_build_addr_expr (NULL_TREE, se.expr);
2201 transfer_array_desc (&se, &expr->ts, tmp);
2202 goto finish_block_label;
2205 /* Initialize the scalarizer. */
2206 gfc_init_loopinfo (&loop);
2207 gfc_add_ss_to_loop (&loop, ss);
2209 /* Initialize the loop. */
2210 gfc_conv_ss_startstride (&loop);
2211 gfc_conv_loop_setup (&loop, &code->expr1->where);
2213 /* The main loop body. */
2214 gfc_mark_ss_chain_used (ss, 1);
2215 gfc_start_scalarized_body (&loop, &body);
2217 gfc_copy_loopinfo_to_se (&se, &loop);
2220 gfc_conv_expr_reference (&se, expr);
2221 transfer_expr (&se, &expr->ts, se.expr, code);
2226 gfc_add_block_to_block (&body, &se.pre);
2227 gfc_add_block_to_block (&body, &se.post);
2230 tmp = gfc_finish_block (&body);
2233 gcc_assert (se.ss == gfc_ss_terminator);
2234 gfc_trans_scalarizing_loops (&loop, &body);
2236 gfc_add_block_to_block (&loop.pre, &loop.post);
2237 tmp = gfc_finish_block (&loop.pre);
2238 gfc_cleanup_loop (&loop);
2241 gfc_add_expr_to_block (&block, tmp);
2243 return gfc_finish_block (&block);
2246 #include "gt-fortran-trans-io.h"