]>
Commit | Line | Data |
---|---|---|
6de9cd9a DN |
1 | /* IO Code translation/library interface |
2 | Copyright (C) 2002, 2003 Free Software Foundation, Inc. | |
3 | Contributed by Paul Brook | |
4 | ||
5 | This file is part of GNU G95. | |
6 | ||
7 | GNU G95 is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU G95 is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU G95; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
26 | #include "tree.h" | |
eadf906f | 27 | #include "tree-gimple.h" |
6de9cd9a DN |
28 | #include <stdio.h> |
29 | #include "ggc.h" | |
30 | #include "toplev.h" | |
31 | #include "real.h" | |
32 | #include <assert.h> | |
33 | #include <gmp.h> | |
34 | #include "gfortran.h" | |
35 | #include "trans.h" | |
36 | #include "trans-stmt.h" | |
37 | #include "trans-array.h" | |
38 | #include "trans-types.h" | |
39 | #include "trans-const.h" | |
40 | ||
41 | ||
42 | static GTY(()) tree gfc_pint4_type_node; | |
43 | ||
44 | /* Members of the ioparm structure. */ | |
45 | ||
46 | static GTY(()) tree ioparm_unit; | |
47 | static GTY(()) tree ioparm_err; | |
48 | static GTY(()) tree ioparm_end; | |
49 | static GTY(()) tree ioparm_eor; | |
50 | static GTY(()) tree ioparm_list_format; | |
51 | static GTY(()) tree ioparm_library_return; | |
52 | static GTY(()) tree ioparm_iostat; | |
53 | static GTY(()) tree ioparm_exist; | |
54 | static GTY(()) tree ioparm_opened; | |
55 | static GTY(()) tree ioparm_number; | |
56 | static GTY(()) tree ioparm_named; | |
57 | static GTY(()) tree ioparm_rec; | |
58 | static GTY(()) tree ioparm_nextrec; | |
59 | static GTY(()) tree ioparm_size; | |
60 | static GTY(()) tree ioparm_recl_in; | |
61 | static GTY(()) tree ioparm_recl_out; | |
62 | static GTY(()) tree ioparm_file; | |
63 | static GTY(()) tree ioparm_file_len; | |
64 | static GTY(()) tree ioparm_status; | |
65 | static GTY(()) tree ioparm_status_len; | |
66 | static GTY(()) tree ioparm_access; | |
67 | static GTY(()) tree ioparm_access_len; | |
68 | static GTY(()) tree ioparm_form; | |
69 | static GTY(()) tree ioparm_form_len; | |
70 | static GTY(()) tree ioparm_blank; | |
71 | static GTY(()) tree ioparm_blank_len; | |
72 | static GTY(()) tree ioparm_position; | |
73 | static GTY(()) tree ioparm_position_len; | |
74 | static GTY(()) tree ioparm_action; | |
75 | static GTY(()) tree ioparm_action_len; | |
76 | static GTY(()) tree ioparm_delim; | |
77 | static GTY(()) tree ioparm_delim_len; | |
78 | static GTY(()) tree ioparm_pad; | |
79 | static GTY(()) tree ioparm_pad_len; | |
80 | static GTY(()) tree ioparm_format; | |
81 | static GTY(()) tree ioparm_format_len; | |
82 | static GTY(()) tree ioparm_advance; | |
83 | static GTY(()) tree ioparm_advance_len; | |
84 | static GTY(()) tree ioparm_name; | |
85 | static GTY(()) tree ioparm_name_len; | |
86 | static GTY(()) tree ioparm_internal_unit; | |
87 | static GTY(()) tree ioparm_internal_unit_len; | |
88 | static GTY(()) tree ioparm_sequential; | |
89 | static GTY(()) tree ioparm_sequential_len; | |
90 | static GTY(()) tree ioparm_direct; | |
91 | static GTY(()) tree ioparm_direct_len; | |
92 | static GTY(()) tree ioparm_formatted; | |
93 | static GTY(()) tree ioparm_formatted_len; | |
94 | static GTY(()) tree ioparm_unformatted; | |
95 | static GTY(()) tree ioparm_unformatted_len; | |
96 | static GTY(()) tree ioparm_read; | |
97 | static GTY(()) tree ioparm_read_len; | |
98 | static GTY(()) tree ioparm_write; | |
99 | static GTY(()) tree ioparm_write_len; | |
100 | static GTY(()) tree ioparm_readwrite; | |
101 | static GTY(()) tree ioparm_readwrite_len; | |
102 | static GTY(()) tree ioparm_namelist_name; | |
103 | static GTY(()) tree ioparm_namelist_name_len; | |
104 | static GTY(()) tree ioparm_namelist_read_mode; | |
105 | ||
106 | /* The global I/O variables */ | |
107 | ||
108 | static GTY(()) tree ioparm_var; | |
109 | static GTY(()) tree locus_file; | |
110 | static GTY(()) tree locus_line; | |
111 | ||
112 | ||
113 | /* Library I/O subroutines */ | |
114 | ||
115 | static GTY(()) tree iocall_read; | |
116 | static GTY(()) tree iocall_read_done; | |
117 | static GTY(()) tree iocall_write; | |
118 | static GTY(()) tree iocall_write_done; | |
119 | static GTY(()) tree iocall_x_integer; | |
120 | static GTY(()) tree iocall_x_logical; | |
121 | static GTY(()) tree iocall_x_character; | |
122 | static GTY(()) tree iocall_x_real; | |
123 | static GTY(()) tree iocall_x_complex; | |
124 | static GTY(()) tree iocall_open; | |
125 | static GTY(()) tree iocall_close; | |
126 | static GTY(()) tree iocall_inquire; | |
127 | static GTY(()) tree iocall_rewind; | |
128 | static GTY(()) tree iocall_backspace; | |
129 | static GTY(()) tree iocall_endfile; | |
130 | static GTY(()) tree iocall_set_nml_val_int; | |
131 | static GTY(()) tree iocall_set_nml_val_float; | |
132 | static GTY(()) tree iocall_set_nml_val_char; | |
133 | static GTY(()) tree iocall_set_nml_val_complex; | |
134 | static GTY(()) tree iocall_set_nml_val_log; | |
135 | ||
136 | /* Variable for keeping track of what the last data transfer statement | |
137 | was. Used for deciding which subroutine to call when the data | |
138 | transfer is complete. */ | |
139 | static enum { READ, WRITE } last_dt; | |
140 | ||
141 | #define ADD_FIELD(name, type) \ | |
142 | ioparm_ ## name = gfc_add_field_to_struct \ | |
143 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
144 | get_identifier (stringize(name)), type) | |
145 | ||
146 | #define ADD_STRING(name) \ | |
147 | ioparm_ ## name = gfc_add_field_to_struct \ | |
148 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
149 | get_identifier (stringize(name)), pchar_type_node); \ | |
150 | ioparm_ ## name ## _len = gfc_add_field_to_struct \ | |
151 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
152 | get_identifier (stringize(name) "_len"), gfc_int4_type_node) | |
153 | ||
154 | ||
155 | /* Create function decls for IO library functions. */ | |
156 | ||
157 | void | |
158 | gfc_build_io_library_fndecls (void) | |
159 | { | |
160 | tree ioparm_type; | |
161 | ||
162 | gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); | |
163 | ||
164 | /* Build the st_parameter structure. Information associated with I/O | |
165 | calls are transferred here. This must match the one defined in the | |
166 | library exactly. */ | |
167 | ||
168 | ioparm_type = make_node (RECORD_TYPE); | |
169 | TYPE_NAME (ioparm_type) = get_identifier ("_gfc_ioparm"); | |
170 | ||
171 | ADD_FIELD (unit, gfc_int4_type_node); | |
172 | ADD_FIELD (err, gfc_int4_type_node); | |
173 | ADD_FIELD (end, gfc_int4_type_node); | |
174 | ADD_FIELD (eor, gfc_int4_type_node); | |
175 | ADD_FIELD (list_format, gfc_int4_type_node); | |
176 | ADD_FIELD (library_return, gfc_int4_type_node); | |
177 | ||
178 | ADD_FIELD (iostat, gfc_pint4_type_node); | |
179 | ADD_FIELD (exist, gfc_pint4_type_node); | |
180 | ADD_FIELD (opened, gfc_pint4_type_node); | |
181 | ADD_FIELD (number, gfc_pint4_type_node); | |
182 | ADD_FIELD (named, gfc_pint4_type_node); | |
183 | ADD_FIELD (rec, gfc_pint4_type_node); | |
184 | ADD_FIELD (nextrec, gfc_pint4_type_node); | |
185 | ADD_FIELD (size, gfc_pint4_type_node); | |
186 | ||
187 | ADD_FIELD (recl_in, gfc_pint4_type_node); | |
188 | ADD_FIELD (recl_out, gfc_pint4_type_node); | |
189 | ||
190 | ADD_STRING (file); | |
191 | ADD_STRING (status); | |
192 | ||
193 | ADD_STRING (access); | |
194 | ADD_STRING (form); | |
195 | ADD_STRING (blank); | |
196 | ADD_STRING (position); | |
197 | ADD_STRING (action); | |
198 | ADD_STRING (delim); | |
199 | ADD_STRING (pad); | |
200 | ADD_STRING (format); | |
201 | ADD_STRING (advance); | |
202 | ADD_STRING (name); | |
203 | ADD_STRING (internal_unit); | |
204 | ADD_STRING (sequential); | |
205 | ||
206 | ADD_STRING (direct); | |
207 | ADD_STRING (formatted); | |
208 | ADD_STRING (unformatted); | |
209 | ADD_STRING (read); | |
210 | ADD_STRING (write); | |
211 | ADD_STRING (readwrite); | |
212 | ||
213 | ADD_STRING (namelist_name); | |
214 | ADD_FIELD (namelist_read_mode, gfc_int4_type_node); | |
215 | ||
216 | gfc_finish_type (ioparm_type); | |
217 | ||
218 | ioparm_var = build_decl (VAR_DECL, get_identifier (PREFIX("ioparm")), | |
219 | ioparm_type); | |
220 | DECL_EXTERNAL (ioparm_var) = 1; | |
221 | TREE_PUBLIC (ioparm_var) = 1; | |
222 | ||
223 | locus_line = build_decl (VAR_DECL, get_identifier (PREFIX("line")), | |
224 | gfc_int4_type_node); | |
225 | DECL_EXTERNAL (locus_line) = 1; | |
226 | TREE_PUBLIC (locus_line) = 1; | |
227 | ||
228 | locus_file = build_decl (VAR_DECL, get_identifier (PREFIX("filename")), | |
229 | pchar_type_node); | |
230 | DECL_EXTERNAL (locus_file) = 1; | |
231 | TREE_PUBLIC (locus_file) = 1; | |
232 | ||
233 | /* Define the transfer functions. */ | |
234 | ||
235 | iocall_x_integer = | |
236 | gfc_build_library_function_decl (get_identifier | |
237 | (PREFIX("transfer_integer")), | |
238 | void_type_node, 2, pvoid_type_node, | |
239 | gfc_int4_type_node); | |
240 | ||
241 | iocall_x_logical = | |
242 | gfc_build_library_function_decl (get_identifier | |
243 | (PREFIX("transfer_logical")), | |
244 | void_type_node, 2, pvoid_type_node, | |
245 | gfc_int4_type_node); | |
246 | ||
247 | iocall_x_character = | |
248 | gfc_build_library_function_decl (get_identifier | |
249 | (PREFIX("transfer_character")), | |
250 | void_type_node, 2, pvoid_type_node, | |
251 | gfc_int4_type_node); | |
252 | ||
253 | iocall_x_real = | |
254 | gfc_build_library_function_decl (get_identifier (PREFIX("transfer_real")), | |
255 | void_type_node, 2, | |
256 | pvoid_type_node, gfc_int4_type_node); | |
257 | ||
258 | iocall_x_complex = | |
259 | gfc_build_library_function_decl (get_identifier | |
260 | (PREFIX("transfer_complex")), | |
261 | void_type_node, 2, pvoid_type_node, | |
262 | gfc_int4_type_node); | |
263 | ||
264 | /* Library entry points */ | |
265 | ||
266 | iocall_read = | |
267 | gfc_build_library_function_decl (get_identifier (PREFIX("st_read")), | |
268 | void_type_node, 0); | |
269 | ||
270 | iocall_write = | |
271 | gfc_build_library_function_decl (get_identifier (PREFIX("st_write")), | |
272 | void_type_node, 0); | |
273 | iocall_open = | |
274 | gfc_build_library_function_decl (get_identifier (PREFIX("st_open")), | |
275 | void_type_node, 0); | |
276 | ||
277 | iocall_close = | |
278 | gfc_build_library_function_decl (get_identifier (PREFIX("st_close")), | |
279 | void_type_node, 0); | |
280 | ||
281 | iocall_inquire = | |
282 | gfc_build_library_function_decl (get_identifier (PREFIX("st_inquire")), | |
283 | gfc_int4_type_node, 0); | |
284 | ||
285 | iocall_rewind = | |
286 | gfc_build_library_function_decl (get_identifier (PREFIX("st_rewind")), | |
287 | gfc_int4_type_node, 0); | |
288 | ||
289 | iocall_backspace = | |
290 | gfc_build_library_function_decl (get_identifier (PREFIX("st_backspace")), | |
291 | gfc_int4_type_node, 0); | |
292 | ||
293 | iocall_endfile = | |
294 | gfc_build_library_function_decl (get_identifier (PREFIX("st_endfile")), | |
295 | gfc_int4_type_node, 0); | |
296 | /* Library helpers */ | |
297 | ||
298 | iocall_read_done = | |
299 | gfc_build_library_function_decl (get_identifier (PREFIX("st_read_done")), | |
300 | gfc_int4_type_node, 0); | |
301 | ||
302 | iocall_write_done = | |
303 | gfc_build_library_function_decl (get_identifier (PREFIX("st_write_done")), | |
304 | gfc_int4_type_node, 0); | |
305 | iocall_set_nml_val_int = | |
306 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_int")), | |
307 | void_type_node, 4, | |
308 | pvoid_type_node, pvoid_type_node, | |
309 | gfc_int4_type_node,gfc_int4_type_node); | |
310 | ||
311 | iocall_set_nml_val_float = | |
312 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_float")), | |
313 | void_type_node, 4, | |
314 | pvoid_type_node, pvoid_type_node, | |
315 | gfc_int4_type_node,gfc_int4_type_node); | |
316 | iocall_set_nml_val_char = | |
317 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_char")), | |
318 | void_type_node, 4, | |
319 | pvoid_type_node, pvoid_type_node, | |
320 | gfc_int4_type_node,gfc_int4_type_node); | |
321 | iocall_set_nml_val_complex = | |
322 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_complex")), | |
323 | void_type_node, 4, | |
324 | pvoid_type_node, pvoid_type_node, | |
325 | gfc_int4_type_node,gfc_int4_type_node); | |
326 | iocall_set_nml_val_log = | |
327 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_log")), | |
328 | void_type_node, 4, | |
329 | pvoid_type_node, pvoid_type_node, | |
330 | gfc_int4_type_node,gfc_int4_type_node); | |
331 | ||
332 | } | |
333 | ||
334 | ||
335 | /* Generate code to store an non-string I/O parameter into the | |
336 | ioparm structure. This is a pass by value. */ | |
337 | ||
338 | static void | |
339 | set_parameter_value (stmtblock_t * block, tree var, gfc_expr * e) | |
340 | { | |
341 | gfc_se se; | |
342 | tree tmp; | |
343 | ||
344 | gfc_init_se (&se, NULL); | |
345 | gfc_conv_expr_type (&se, e, TREE_TYPE (var)); | |
346 | gfc_add_block_to_block (block, &se.pre); | |
347 | ||
348 | tmp = build (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var); | |
349 | gfc_add_modify_expr (block, tmp, se.expr); | |
350 | } | |
351 | ||
352 | ||
353 | /* Generate code to store an non-string I/O parameter into the | |
354 | ioparm structure. This is pass by reference. */ | |
355 | ||
356 | static void | |
357 | set_parameter_ref (stmtblock_t * block, tree var, gfc_expr * e) | |
358 | { | |
359 | gfc_se se; | |
360 | tree tmp; | |
361 | ||
362 | gfc_init_se (&se, NULL); | |
363 | se.want_pointer = 1; | |
364 | ||
365 | gfc_conv_expr_type (&se, e, TREE_TYPE (var)); | |
366 | gfc_add_block_to_block (block, &se.pre); | |
367 | ||
368 | tmp = build (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var); | |
369 | gfc_add_modify_expr (block, tmp, se.expr); | |
370 | } | |
371 | ||
372 | ||
373 | /* Generate code to store a string and its length into the | |
374 | ioparm structure. */ | |
375 | ||
376 | static void | |
377 | set_string (stmtblock_t * block, stmtblock_t * postblock, tree var, | |
378 | tree var_len, gfc_expr * e) | |
379 | { | |
380 | gfc_se se; | |
381 | tree tmp; | |
382 | tree msg; | |
383 | tree io; | |
384 | tree len; | |
385 | ||
386 | gfc_init_se (&se, NULL); | |
387 | gfc_conv_expr (&se, e); | |
388 | ||
389 | io = build (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var); | |
390 | len = build (COMPONENT_REF, TREE_TYPE (var_len), ioparm_var, var_len); | |
391 | ||
392 | /* Integer variable assigned a format label. */ | |
393 | if (e->ts.type == BT_INTEGER && e->symtree->n.sym->attr.assign == 1) | |
394 | { | |
395 | msg = | |
396 | gfc_build_string_const (37, "Assigned label is not a format label"); | |
397 | tmp = GFC_DECL_STRING_LEN (se.expr); | |
398 | tmp = build (LE_EXPR, boolean_type_node, tmp, integer_minus_one_node); | |
399 | gfc_trans_runtime_check (tmp, msg, &se.pre); | |
400 | gfc_add_modify_expr (&se.pre, io, GFC_DECL_ASSIGN_ADDR (se.expr)); | |
401 | gfc_add_modify_expr (&se.pre, len, GFC_DECL_STRING_LEN (se.expr)); | |
402 | } | |
403 | else | |
404 | { | |
405 | gfc_conv_string_parameter (&se); | |
406 | gfc_add_modify_expr (&se.pre, io, se.expr); | |
407 | gfc_add_modify_expr (&se.pre, len, se.string_length); | |
408 | } | |
409 | ||
410 | gfc_add_block_to_block (block, &se.pre); | |
411 | gfc_add_block_to_block (postblock, &se.post); | |
412 | ||
413 | } | |
414 | ||
415 | ||
416 | /* Set a member of the ioparm structure to one. */ | |
417 | static void | |
418 | set_flag (stmtblock_t *block, tree var) | |
419 | { | |
420 | tree tmp; | |
421 | ||
422 | tmp = build (COMPONENT_REF, TREE_TYPE(var), ioparm_var, var); | |
423 | gfc_add_modify_expr (block, tmp, integer_one_node); | |
424 | } | |
425 | ||
426 | ||
427 | /* Add a case to a IO-result switch. */ | |
428 | ||
429 | static void | |
430 | add_case (int label_value, gfc_st_label * label, stmtblock_t * body) | |
431 | { | |
432 | tree tmp, value; | |
433 | ||
434 | if (label == NULL) | |
435 | return; /* No label, no case */ | |
436 | ||
437 | value = build_int_2 (label_value, 0); | |
438 | ||
439 | /* Make a backend label for this case. */ | |
440 | tmp = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
441 | DECL_CONTEXT (tmp) = current_function_decl; | |
442 | ||
443 | /* And the case itself. */ | |
444 | tmp = build_v (CASE_LABEL_EXPR, value, NULL_TREE, tmp); | |
445 | gfc_add_expr_to_block (body, tmp); | |
446 | ||
447 | /* Jump to the label. */ | |
448 | tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label)); | |
449 | gfc_add_expr_to_block (body, tmp); | |
450 | } | |
451 | ||
452 | ||
453 | /* Generate a switch statement that branches to the correct I/O | |
454 | result label. The last statement of an I/O call stores the | |
455 | result into a variable because there is often cleanup that | |
456 | must be done before the switch, so a temporary would have to | |
457 | be created anyway. */ | |
458 | ||
459 | static void | |
460 | io_result (stmtblock_t * block, gfc_st_label * err_label, | |
461 | gfc_st_label * end_label, gfc_st_label * eor_label) | |
462 | { | |
463 | stmtblock_t body; | |
464 | tree tmp, rc; | |
465 | ||
466 | /* If no labels are specified, ignore the result instead | |
467 | of building an empty switch. */ | |
468 | if (err_label == NULL | |
469 | && end_label == NULL | |
470 | && eor_label == NULL) | |
471 | return; | |
472 | ||
473 | /* Build a switch statement. */ | |
474 | gfc_start_block (&body); | |
475 | ||
476 | /* The label values here must be the same as the values | |
477 | in the library_return enum in the runtime library */ | |
478 | add_case (1, err_label, &body); | |
479 | add_case (2, end_label, &body); | |
480 | add_case (3, eor_label, &body); | |
481 | ||
482 | tmp = gfc_finish_block (&body); | |
483 | ||
484 | rc = build (COMPONENT_REF, TREE_TYPE (ioparm_library_return), ioparm_var, | |
485 | ioparm_library_return); | |
486 | ||
487 | tmp = build_v (SWITCH_EXPR, rc, tmp, NULL_TREE); | |
488 | ||
489 | gfc_add_expr_to_block (block, tmp); | |
490 | } | |
491 | ||
492 | ||
493 | /* Store the current file and line number to variables so that if a | |
494 | library call goes awry, we can tell the user where the problem is. */ | |
495 | ||
496 | static void | |
497 | set_error_locus (stmtblock_t * block, locus * where) | |
498 | { | |
499 | gfc_file *f; | |
500 | tree tmp; | |
501 | int line; | |
502 | ||
503 | f = where->file; | |
504 | tmp = gfc_build_string_const (strlen (f->filename) + 1, f->filename); | |
505 | ||
506 | tmp = gfc_build_addr_expr (pchar_type_node, tmp); | |
507 | gfc_add_modify_expr (block, locus_file, tmp); | |
508 | ||
509 | line = where->lp->start_line + where->line; | |
510 | gfc_add_modify_expr (block, locus_line, build_int_2 (line, 0)); | |
511 | } | |
512 | ||
513 | ||
514 | /* Translate an OPEN statement. */ | |
515 | ||
516 | tree | |
517 | gfc_trans_open (gfc_code * code) | |
518 | { | |
519 | stmtblock_t block, post_block; | |
520 | gfc_open *p; | |
521 | tree tmp; | |
522 | ||
523 | gfc_init_block (&block); | |
524 | gfc_init_block (&post_block); | |
525 | ||
526 | set_error_locus (&block, &code->loc); | |
527 | p = code->ext.open; | |
528 | ||
529 | if (p->unit) | |
530 | set_parameter_value (&block, ioparm_unit, p->unit); | |
531 | ||
532 | if (p->file) | |
533 | set_string (&block, &post_block, ioparm_file, ioparm_file_len, p->file); | |
534 | ||
535 | if (p->status) | |
536 | set_string (&block, &post_block, ioparm_status, | |
537 | ioparm_status_len, p->status); | |
538 | ||
539 | if (p->access) | |
540 | set_string (&block, &post_block, ioparm_access, | |
541 | ioparm_access_len, p->access); | |
542 | ||
543 | if (p->form) | |
544 | set_string (&block, &post_block, ioparm_form, ioparm_form_len, p->form); | |
545 | ||
546 | if (p->recl) | |
547 | set_parameter_value (&block, ioparm_recl_in, p->recl); | |
548 | ||
549 | if (p->blank) | |
550 | set_string (&block, &post_block, ioparm_blank, ioparm_blank_len, | |
551 | p->blank); | |
552 | ||
553 | if (p->position) | |
554 | set_string (&block, &post_block, ioparm_position, | |
555 | ioparm_position_len, p->position); | |
556 | ||
557 | if (p->action) | |
558 | set_string (&block, &post_block, ioparm_action, | |
559 | ioparm_action_len, p->action); | |
560 | ||
561 | if (p->delim) | |
562 | set_string (&block, &post_block, ioparm_delim, ioparm_delim_len, | |
563 | p->delim); | |
564 | ||
565 | if (p->pad) | |
566 | set_string (&block, &post_block, ioparm_pad, ioparm_pad_len, p->pad); | |
567 | ||
568 | if (p->iostat) | |
569 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
570 | ||
571 | if (p->err) | |
572 | set_flag (&block, ioparm_err); | |
573 | ||
574 | tmp = gfc_build_function_call (iocall_open, NULL_TREE); | |
575 | gfc_add_expr_to_block (&block, tmp); | |
576 | ||
577 | gfc_add_block_to_block (&block, &post_block); | |
578 | ||
579 | io_result (&block, p->err, NULL, NULL); | |
580 | ||
581 | return gfc_finish_block (&block); | |
582 | } | |
583 | ||
584 | ||
585 | /* Translate a CLOSE statement. */ | |
586 | ||
587 | tree | |
588 | gfc_trans_close (gfc_code * code) | |
589 | { | |
590 | stmtblock_t block, post_block; | |
591 | gfc_close *p; | |
592 | tree tmp; | |
593 | ||
594 | gfc_init_block (&block); | |
595 | gfc_init_block (&post_block); | |
596 | ||
597 | set_error_locus (&block, &code->loc); | |
598 | p = code->ext.close; | |
599 | ||
600 | if (p->unit) | |
601 | set_parameter_value (&block, ioparm_unit, p->unit); | |
602 | ||
603 | if (p->status) | |
604 | set_string (&block, &post_block, ioparm_status, | |
605 | ioparm_status_len, p->status); | |
606 | ||
607 | if (p->iostat) | |
608 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
609 | ||
610 | if (p->err) | |
611 | set_flag (&block, ioparm_err); | |
612 | ||
613 | tmp = gfc_build_function_call (iocall_close, NULL_TREE); | |
614 | gfc_add_expr_to_block (&block, tmp); | |
615 | ||
616 | gfc_add_block_to_block (&block, &post_block); | |
617 | ||
618 | io_result (&block, p->err, NULL, NULL); | |
619 | ||
620 | return gfc_finish_block (&block); | |
621 | } | |
622 | ||
623 | ||
624 | /* Common subroutine for building a file positioning statement. */ | |
625 | ||
626 | static tree | |
627 | build_filepos (tree function, gfc_code * code) | |
628 | { | |
629 | stmtblock_t block; | |
630 | gfc_filepos *p; | |
631 | tree tmp; | |
632 | ||
633 | p = code->ext.filepos; | |
634 | ||
635 | gfc_init_block (&block); | |
636 | ||
637 | set_error_locus (&block, &code->loc); | |
638 | ||
639 | if (p->unit) | |
640 | set_parameter_value (&block, ioparm_unit, p->unit); | |
641 | ||
642 | if (p->iostat) | |
643 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
644 | ||
645 | if (p->err) | |
646 | set_flag (&block, ioparm_err); | |
647 | ||
648 | tmp = gfc_build_function_call (function, NULL); | |
649 | gfc_add_expr_to_block (&block, tmp); | |
650 | ||
651 | io_result (&block, p->err, NULL, NULL); | |
652 | ||
653 | return gfc_finish_block (&block); | |
654 | } | |
655 | ||
656 | ||
657 | /* Translate a BACKSPACE statement. */ | |
658 | ||
659 | tree | |
660 | gfc_trans_backspace (gfc_code * code) | |
661 | { | |
662 | ||
663 | return build_filepos (iocall_backspace, code); | |
664 | } | |
665 | ||
666 | ||
667 | /* Translate an ENDFILE statement. */ | |
668 | ||
669 | tree | |
670 | gfc_trans_endfile (gfc_code * code) | |
671 | { | |
672 | ||
673 | return build_filepos (iocall_endfile, code); | |
674 | } | |
675 | ||
676 | ||
677 | /* Translate a REWIND statement. */ | |
678 | ||
679 | tree | |
680 | gfc_trans_rewind (gfc_code * code) | |
681 | { | |
682 | ||
683 | return build_filepos (iocall_rewind, code); | |
684 | } | |
685 | ||
686 | ||
687 | /* Translate the non-IOLENGTH form of an INQUIRE statement. */ | |
688 | ||
689 | tree | |
690 | gfc_trans_inquire (gfc_code * code) | |
691 | { | |
692 | stmtblock_t block, post_block; | |
693 | gfc_inquire *p; | |
694 | tree tmp; | |
695 | ||
696 | gfc_init_block (&block); | |
697 | gfc_init_block (&post_block); | |
698 | ||
699 | set_error_locus (&block, &code->loc); | |
700 | p = code->ext.inquire; | |
701 | ||
702 | if (p->unit) | |
703 | set_parameter_value (&block, ioparm_unit, p->unit); | |
704 | ||
705 | if (p->file) | |
706 | set_string (&block, &post_block, ioparm_file, ioparm_file_len, p->file); | |
707 | ||
708 | if (p->iostat) | |
709 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
710 | ||
711 | if (p->exist) | |
712 | set_parameter_ref (&block, ioparm_exist, p->exist); | |
713 | ||
714 | if (p->opened) | |
715 | set_parameter_ref (&block, ioparm_opened, p->opened); | |
716 | ||
717 | if (p->number) | |
718 | set_parameter_ref (&block, ioparm_number, p->number); | |
719 | ||
720 | if (p->named) | |
721 | set_parameter_ref (&block, ioparm_named, p->named); | |
722 | ||
723 | if (p->name) | |
724 | set_string (&block, &post_block, ioparm_name, ioparm_name_len, p->name); | |
725 | ||
726 | if (p->access) | |
727 | set_string (&block, &post_block, ioparm_access, | |
728 | ioparm_access_len, p->access); | |
729 | ||
730 | if (p->sequential) | |
731 | set_string (&block, &post_block, ioparm_sequential, | |
732 | ioparm_sequential_len, p->sequential); | |
733 | ||
734 | if (p->direct) | |
735 | set_string (&block, &post_block, ioparm_direct, | |
736 | ioparm_direct_len, p->direct); | |
737 | ||
738 | if (p->form) | |
739 | set_string (&block, &post_block, ioparm_form, ioparm_form_len, p->form); | |
740 | ||
741 | if (p->formatted) | |
742 | set_string (&block, &post_block, ioparm_formatted, | |
743 | ioparm_formatted_len, p->formatted); | |
744 | ||
745 | if (p->unformatted) | |
746 | set_string (&block, &post_block, ioparm_unformatted, | |
747 | ioparm_unformatted_len, p->unformatted); | |
748 | ||
749 | if (p->recl) | |
750 | set_parameter_ref (&block, ioparm_recl_out, p->recl); | |
751 | ||
752 | if (p->nextrec) | |
753 | set_parameter_ref (&block, ioparm_nextrec, p->nextrec); | |
754 | ||
755 | if (p->blank) | |
756 | set_string (&block, &post_block, ioparm_blank, ioparm_blank_len, | |
757 | p->blank); | |
758 | ||
759 | if (p->position) | |
760 | set_string (&block, &post_block, ioparm_position, | |
761 | ioparm_position_len, p->position); | |
762 | ||
763 | if (p->action) | |
764 | set_string (&block, &post_block, ioparm_action, | |
765 | ioparm_action_len, p->action); | |
766 | ||
767 | if (p->read) | |
768 | set_string (&block, &post_block, ioparm_read, ioparm_read_len, p->read); | |
769 | ||
770 | if (p->write) | |
771 | set_string (&block, &post_block, ioparm_write, | |
772 | ioparm_write_len, p->write); | |
773 | ||
774 | if (p->readwrite) | |
775 | set_string (&block, &post_block, ioparm_readwrite, | |
776 | ioparm_readwrite_len, p->readwrite); | |
777 | ||
778 | if (p->delim) | |
779 | set_string (&block, &post_block, ioparm_delim, ioparm_delim_len, | |
780 | p->delim); | |
781 | ||
782 | if (p->err) | |
783 | set_flag (&block, ioparm_err); | |
784 | ||
785 | tmp = gfc_build_function_call (iocall_inquire, NULL); | |
786 | gfc_add_expr_to_block (&block, tmp); | |
787 | ||
788 | gfc_add_block_to_block (&block, &post_block); | |
789 | ||
790 | io_result (&block, p->err, NULL, NULL); | |
791 | ||
792 | return gfc_finish_block (&block); | |
793 | } | |
794 | ||
795 | ||
796 | /* Translate the IOLENGTH form of an INQUIRE statement. We treat | |
797 | this as a third sort of data transfer statement, except that | |
798 | lengths are summed instead of actually transfering any data. */ | |
799 | ||
800 | tree | |
801 | gfc_trans_iolength (gfc_code * c ATTRIBUTE_UNUSED) | |
802 | { | |
803 | gfc_todo_error ("IOLENGTH statement"); | |
804 | } | |
805 | ||
806 | static gfc_expr * | |
807 | gfc_new_nml_name_expr (char * name) | |
808 | { | |
809 | gfc_expr * nml_name; | |
810 | nml_name = gfc_get_expr(); | |
811 | nml_name->ref = NULL; | |
812 | nml_name->expr_type = EXPR_CONSTANT; | |
813 | nml_name->ts.kind = gfc_default_character_kind (); | |
814 | nml_name->ts.type = BT_CHARACTER; | |
815 | nml_name->value.character.length = strlen(name); | |
816 | nml_name->value.character.string = name; | |
817 | ||
818 | return nml_name; | |
819 | } | |
820 | ||
821 | static gfc_expr * | |
822 | get_new_var_expr(gfc_symbol * sym) | |
823 | { | |
824 | gfc_expr * nml_var; | |
825 | ||
826 | nml_var = gfc_get_expr(); | |
827 | nml_var->expr_type = EXPR_VARIABLE; | |
828 | nml_var->ts = sym->ts; | |
829 | if (sym->as) | |
830 | nml_var->rank = sym->as->rank; | |
831 | nml_var->symtree = (gfc_symtree *)gfc_getmem (sizeof (gfc_symtree)); | |
832 | nml_var->symtree->n.sym = sym; | |
833 | nml_var->where = sym->declared_at; | |
834 | sym->attr.referenced = 1; | |
835 | ||
836 | return nml_var; | |
837 | } | |
838 | ||
839 | ||
840 | /* Create a data transfer statement. Not all of the fields are valid | |
841 | for both reading and writing, but improper use has been filtered | |
842 | out by now. */ | |
843 | ||
844 | static tree | |
845 | build_dt (tree * function, gfc_code * code) | |
846 | { | |
847 | stmtblock_t block, post_block; | |
848 | gfc_dt *dt; | |
849 | tree tmp, args, arg2; | |
850 | gfc_expr *nmlname, *nmlvar; | |
851 | gfc_namelist *nml, *nml_tail; | |
852 | gfc_se se,se2; | |
853 | int ts_kind, ts_type, name_len; | |
854 | ||
855 | gfc_init_block (&block); | |
856 | gfc_init_block (&post_block); | |
857 | ||
858 | set_error_locus (&block, &code->loc); | |
859 | dt = code->ext.dt; | |
860 | ||
861 | if (dt->io_unit) | |
862 | { | |
863 | if (dt->io_unit->ts.type == BT_CHARACTER) | |
864 | { | |
865 | set_string (&block, &post_block, ioparm_internal_unit, | |
866 | ioparm_internal_unit_len, dt->io_unit); | |
867 | } | |
868 | else | |
869 | set_parameter_value (&block, ioparm_unit, dt->io_unit); | |
870 | } | |
871 | ||
872 | if (dt->rec) | |
873 | set_parameter_value (&block, ioparm_rec, dt->rec); | |
874 | ||
875 | if (dt->advance) | |
876 | set_string (&block, &post_block, ioparm_advance, ioparm_advance_len, | |
877 | dt->advance); | |
878 | ||
879 | if (dt->format_expr) | |
880 | set_string (&block, &post_block, ioparm_format, ioparm_format_len, | |
881 | dt->format_expr); | |
882 | ||
883 | if (dt->format_label) | |
884 | { | |
885 | if (dt->format_label == &format_asterisk) | |
886 | set_flag (&block, ioparm_list_format); | |
887 | else | |
888 | set_string (&block, &post_block, ioparm_format, | |
889 | ioparm_format_len, dt->format_label->format); | |
890 | } | |
891 | ||
892 | if (dt->iostat) | |
893 | set_parameter_ref (&block, ioparm_iostat, dt->iostat); | |
894 | ||
895 | if (dt->size) | |
896 | set_parameter_ref (&block, ioparm_size, dt->size); | |
897 | ||
898 | if (dt->err) | |
899 | set_flag (&block, ioparm_err); | |
900 | ||
901 | if (dt->eor) | |
902 | set_flag(&block, ioparm_eor); | |
903 | ||
904 | if (dt->end) | |
905 | set_flag(&block, ioparm_end); | |
906 | ||
907 | if (dt->namelist) | |
908 | { | |
909 | if (dt->format_expr || dt->format_label) | |
910 | fatal_error("A format cannot be specified with a namelist"); | |
911 | ||
912 | nmlname = gfc_new_nml_name_expr(dt->namelist->name); | |
913 | ||
914 | set_string (&block, &post_block, ioparm_namelist_name, | |
915 | ioparm_namelist_name_len, nmlname); | |
916 | ||
917 | if (last_dt == READ) | |
918 | set_flag (&block, ioparm_namelist_read_mode); | |
919 | ||
920 | nml = dt->namelist->namelist; | |
921 | nml_tail = dt->namelist->namelist_tail; | |
922 | ||
923 | while(nml != NULL) | |
924 | { | |
925 | gfc_init_se (&se, NULL); | |
926 | gfc_init_se (&se2, NULL); | |
927 | nmlvar = get_new_var_expr(nml->sym); | |
928 | nmlname = gfc_new_nml_name_expr(nml->sym->name); | |
929 | name_len = strlen(nml->sym->name); | |
930 | ts_kind = nml->sym->ts.kind; | |
931 | ts_type = nml->sym->ts.type; | |
932 | ||
933 | gfc_conv_expr_reference (&se2, nmlname); | |
934 | gfc_conv_expr_reference (&se, nmlvar); | |
935 | args = gfc_chainon_list (NULL_TREE, se.expr); | |
936 | args = gfc_chainon_list (args, se2.expr); | |
937 | args = gfc_chainon_list (args, se2.string_length); | |
938 | arg2 = build_int_2 (ts_kind, 0); | |
939 | args = gfc_chainon_list (args,arg2); | |
940 | switch (ts_type) | |
941 | { | |
942 | case BT_INTEGER: | |
943 | tmp = gfc_build_function_call (iocall_set_nml_val_int, args); | |
944 | break; | |
945 | case BT_CHARACTER: | |
946 | tmp = gfc_build_function_call (iocall_set_nml_val_char, args); | |
947 | break; | |
948 | case BT_REAL: | |
949 | tmp = gfc_build_function_call (iocall_set_nml_val_float, args); | |
950 | break; | |
951 | case BT_LOGICAL: | |
952 | tmp = gfc_build_function_call (iocall_set_nml_val_log, args); | |
953 | break; | |
954 | case BT_COMPLEX: | |
955 | tmp = gfc_build_function_call (iocall_set_nml_val_complex, args); | |
956 | break; | |
957 | default : | |
958 | internal_error ("Bad namelist IO basetype (%d)", ts_type); | |
959 | } | |
960 | ||
961 | gfc_add_expr_to_block (&block, tmp); | |
962 | ||
963 | nml = nml->next; | |
964 | } | |
965 | } | |
966 | ||
967 | tmp = gfc_build_function_call (*function, NULL_TREE); | |
968 | gfc_add_expr_to_block (&block, tmp); | |
969 | ||
970 | gfc_add_block_to_block (&block, &post_block); | |
971 | ||
972 | return gfc_finish_block (&block); | |
973 | } | |
974 | ||
975 | ||
976 | /* Translate a READ statement. */ | |
977 | ||
978 | tree | |
979 | gfc_trans_read (gfc_code * code) | |
980 | { | |
981 | ||
982 | last_dt = READ; | |
983 | return build_dt (&iocall_read, code); | |
984 | } | |
985 | ||
986 | ||
987 | /* Translate a WRITE statement */ | |
988 | ||
989 | tree | |
990 | gfc_trans_write (gfc_code * code) | |
991 | { | |
992 | ||
993 | last_dt = WRITE; | |
994 | return build_dt (&iocall_write, code); | |
995 | } | |
996 | ||
997 | ||
998 | /* Finish a data transfer statement. */ | |
999 | ||
1000 | tree | |
1001 | gfc_trans_dt_end (gfc_code * code) | |
1002 | { | |
1003 | tree function, tmp; | |
1004 | stmtblock_t block; | |
1005 | ||
1006 | gfc_init_block (&block); | |
1007 | ||
1008 | function = (last_dt == READ) ? iocall_read_done : iocall_write_done; | |
1009 | ||
1010 | tmp = gfc_build_function_call (function, NULL); | |
1011 | gfc_add_expr_to_block (&block, tmp); | |
1012 | ||
1013 | io_result (&block, code->ext.dt->err, code->ext.dt->end, code->ext.dt->eor); | |
1014 | ||
1015 | return gfc_finish_block (&block); | |
1016 | } | |
1017 | ||
1018 | ||
1019 | /* Generate the call for a scalar transfer node. */ | |
1020 | ||
1021 | static void | |
1022 | transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr) | |
1023 | { | |
1024 | tree args, tmp, function, arg2, field, expr; | |
1025 | gfc_component *c; | |
1026 | int kind; | |
1027 | ||
1028 | kind = ts->kind; | |
1029 | function = NULL; | |
1030 | arg2 = NULL; | |
1031 | ||
1032 | switch (ts->type) | |
1033 | { | |
1034 | case BT_INTEGER: | |
1035 | arg2 = build_int_2 (kind, 0); | |
1036 | function = iocall_x_integer; | |
1037 | break; | |
1038 | ||
1039 | case BT_REAL: | |
1040 | arg2 = build_int_2 (kind, 0); | |
1041 | function = iocall_x_real; | |
1042 | break; | |
1043 | ||
1044 | case BT_COMPLEX: | |
1045 | arg2 = build_int_2 (kind, 0); | |
1046 | function = iocall_x_complex; | |
1047 | break; | |
1048 | ||
1049 | case BT_LOGICAL: | |
1050 | arg2 = build_int_2 (kind, 0); | |
1051 | function = iocall_x_logical; | |
1052 | break; | |
1053 | ||
1054 | case BT_CHARACTER: | |
1055 | arg2 = se->string_length; | |
1056 | function = iocall_x_character; | |
1057 | break; | |
1058 | ||
1059 | case BT_DERIVED: | |
1060 | expr = gfc_evaluate_now (addr_expr, &se->pre); | |
1061 | expr = gfc_build_indirect_ref (expr); | |
1062 | ||
1063 | for (c = ts->derived->components; c; c = c->next) | |
1064 | { | |
1065 | field = c->backend_decl; | |
1066 | assert (field && TREE_CODE (field) == FIELD_DECL); | |
1067 | ||
1068 | tmp = build (COMPONENT_REF, TREE_TYPE (field), expr, field); | |
1069 | ||
1070 | if (c->ts.type == BT_CHARACTER) | |
1071 | { | |
1072 | assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE); | |
1073 | se->string_length = | |
1074 | TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp))); | |
1075 | } | |
1076 | transfer_expr (se, &c->ts, gfc_build_addr_expr (NULL, tmp)); | |
1077 | } | |
1078 | return; | |
1079 | ||
1080 | default: | |
1081 | internal_error ("Bad IO basetype (%d)", ts->type); | |
1082 | } | |
1083 | ||
1084 | args = gfc_chainon_list (NULL_TREE, addr_expr); | |
1085 | args = gfc_chainon_list (args, arg2); | |
1086 | ||
1087 | tmp = gfc_build_function_call (function, args); | |
1088 | gfc_add_expr_to_block (&se->pre, tmp); | |
1089 | gfc_add_block_to_block (&se->pre, &se->post); | |
1090 | } | |
1091 | ||
1092 | ||
1093 | /* gfc_trans_transfer()-- Translate a TRANSFER code node */ | |
1094 | ||
1095 | tree | |
1096 | gfc_trans_transfer (gfc_code * code) | |
1097 | { | |
1098 | stmtblock_t block, body; | |
1099 | gfc_loopinfo loop; | |
1100 | gfc_expr *expr; | |
1101 | gfc_ss *ss; | |
1102 | gfc_se se; | |
1103 | tree tmp; | |
1104 | ||
1105 | gfc_start_block (&block); | |
1106 | ||
1107 | expr = code->expr; | |
1108 | ss = gfc_walk_expr (expr); | |
1109 | ||
1110 | gfc_init_se (&se, NULL); | |
1111 | ||
1112 | if (ss == gfc_ss_terminator) | |
1113 | gfc_init_block (&body); | |
1114 | else | |
1115 | { | |
1116 | /* Initialize the scalarizer. */ | |
1117 | gfc_init_loopinfo (&loop); | |
1118 | gfc_add_ss_to_loop (&loop, ss); | |
1119 | ||
1120 | /* Initialize the loop. */ | |
1121 | gfc_conv_ss_startstride (&loop); | |
1122 | gfc_conv_loop_setup (&loop); | |
1123 | ||
1124 | /* The main loop body. */ | |
1125 | gfc_mark_ss_chain_used (ss, 1); | |
1126 | gfc_start_scalarized_body (&loop, &body); | |
1127 | ||
1128 | gfc_copy_loopinfo_to_se (&se, &loop); | |
1129 | se.ss = ss; | |
1130 | } | |
1131 | ||
1132 | gfc_conv_expr_reference (&se, expr); | |
1133 | ||
1134 | transfer_expr (&se, &expr->ts, se.expr); | |
1135 | ||
1136 | gfc_add_block_to_block (&body, &se.pre); | |
1137 | gfc_add_block_to_block (&body, &se.post); | |
1138 | ||
1139 | if (se.ss == NULL) | |
1140 | tmp = gfc_finish_block (&body); | |
1141 | else | |
1142 | { | |
1143 | assert (se.ss == gfc_ss_terminator); | |
1144 | gfc_trans_scalarizing_loops (&loop, &body); | |
1145 | ||
1146 | gfc_add_block_to_block (&loop.pre, &loop.post); | |
1147 | tmp = gfc_finish_block (&loop.pre); | |
1148 | gfc_cleanup_loop (&loop); | |
1149 | } | |
1150 | ||
1151 | gfc_add_expr_to_block (&block, tmp); | |
1152 | ||
1153 | return gfc_finish_block (&block);; | |
1154 | } | |
1155 | ||
1156 | #include "gt-fortran-trans-io.h" | |
1157 |