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6de9cd9a | 1 | /* IO Code translation/library interface |
ec378180 | 2 | Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
6de9cd9a DN |
3 | Contributed by Paul Brook |
4 | ||
9fc4d79b | 5 | This file is part of GCC. |
6de9cd9a | 6 | |
9fc4d79b TS |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
6de9cd9a | 11 | |
9fc4d79b TS |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
6de9cd9a DN |
16 | |
17 | You should have received a copy of the GNU General Public License | |
9fc4d79b TS |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
6de9cd9a DN |
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 "ggc.h" |
29 | #include "toplev.h" | |
30 | #include "real.h" | |
6de9cd9a DN |
31 | #include "gfortran.h" |
32 | #include "trans.h" | |
33 | #include "trans-stmt.h" | |
34 | #include "trans-array.h" | |
35 | #include "trans-types.h" | |
36 | #include "trans-const.h" | |
37 | ||
38 | ||
6de9cd9a DN |
39 | /* Members of the ioparm structure. */ |
40 | ||
41 | static GTY(()) tree ioparm_unit; | |
42 | static GTY(()) tree ioparm_err; | |
43 | static GTY(()) tree ioparm_end; | |
44 | static GTY(()) tree ioparm_eor; | |
45 | static GTY(()) tree ioparm_list_format; | |
46 | static GTY(()) tree ioparm_library_return; | |
47 | static GTY(()) tree ioparm_iostat; | |
48 | static GTY(()) tree ioparm_exist; | |
49 | static GTY(()) tree ioparm_opened; | |
50 | static GTY(()) tree ioparm_number; | |
51 | static GTY(()) tree ioparm_named; | |
52 | static GTY(()) tree ioparm_rec; | |
53 | static GTY(()) tree ioparm_nextrec; | |
54 | static GTY(()) tree ioparm_size; | |
55 | static GTY(()) tree ioparm_recl_in; | |
56 | static GTY(()) tree ioparm_recl_out; | |
8750f9cd | 57 | static GTY(()) tree ioparm_iolength; |
6de9cd9a DN |
58 | static GTY(()) tree ioparm_file; |
59 | static GTY(()) tree ioparm_file_len; | |
60 | static GTY(()) tree ioparm_status; | |
61 | static GTY(()) tree ioparm_status_len; | |
62 | static GTY(()) tree ioparm_access; | |
63 | static GTY(()) tree ioparm_access_len; | |
64 | static GTY(()) tree ioparm_form; | |
65 | static GTY(()) tree ioparm_form_len; | |
66 | static GTY(()) tree ioparm_blank; | |
67 | static GTY(()) tree ioparm_blank_len; | |
68 | static GTY(()) tree ioparm_position; | |
69 | static GTY(()) tree ioparm_position_len; | |
70 | static GTY(()) tree ioparm_action; | |
71 | static GTY(()) tree ioparm_action_len; | |
72 | static GTY(()) tree ioparm_delim; | |
73 | static GTY(()) tree ioparm_delim_len; | |
74 | static GTY(()) tree ioparm_pad; | |
75 | static GTY(()) tree ioparm_pad_len; | |
76 | static GTY(()) tree ioparm_format; | |
77 | static GTY(()) tree ioparm_format_len; | |
78 | static GTY(()) tree ioparm_advance; | |
79 | static GTY(()) tree ioparm_advance_len; | |
80 | static GTY(()) tree ioparm_name; | |
81 | static GTY(()) tree ioparm_name_len; | |
82 | static GTY(()) tree ioparm_internal_unit; | |
83 | static GTY(()) tree ioparm_internal_unit_len; | |
84 | static GTY(()) tree ioparm_sequential; | |
85 | static GTY(()) tree ioparm_sequential_len; | |
86 | static GTY(()) tree ioparm_direct; | |
87 | static GTY(()) tree ioparm_direct_len; | |
88 | static GTY(()) tree ioparm_formatted; | |
89 | static GTY(()) tree ioparm_formatted_len; | |
90 | static GTY(()) tree ioparm_unformatted; | |
91 | static GTY(()) tree ioparm_unformatted_len; | |
92 | static GTY(()) tree ioparm_read; | |
93 | static GTY(()) tree ioparm_read_len; | |
94 | static GTY(()) tree ioparm_write; | |
95 | static GTY(()) tree ioparm_write_len; | |
96 | static GTY(()) tree ioparm_readwrite; | |
97 | static GTY(()) tree ioparm_readwrite_len; | |
98 | static GTY(()) tree ioparm_namelist_name; | |
99 | static GTY(()) tree ioparm_namelist_name_len; | |
100 | static GTY(()) tree ioparm_namelist_read_mode; | |
101 | ||
102 | /* The global I/O variables */ | |
103 | ||
104 | static GTY(()) tree ioparm_var; | |
105 | static GTY(()) tree locus_file; | |
106 | static GTY(()) tree locus_line; | |
107 | ||
108 | ||
109 | /* Library I/O subroutines */ | |
110 | ||
111 | static GTY(()) tree iocall_read; | |
112 | static GTY(()) tree iocall_read_done; | |
113 | static GTY(()) tree iocall_write; | |
114 | static GTY(()) tree iocall_write_done; | |
115 | static GTY(()) tree iocall_x_integer; | |
116 | static GTY(()) tree iocall_x_logical; | |
117 | static GTY(()) tree iocall_x_character; | |
118 | static GTY(()) tree iocall_x_real; | |
119 | static GTY(()) tree iocall_x_complex; | |
120 | static GTY(()) tree iocall_open; | |
121 | static GTY(()) tree iocall_close; | |
122 | static GTY(()) tree iocall_inquire; | |
8750f9cd JB |
123 | static GTY(()) tree iocall_iolength; |
124 | static GTY(()) tree iocall_iolength_done; | |
6de9cd9a DN |
125 | static GTY(()) tree iocall_rewind; |
126 | static GTY(()) tree iocall_backspace; | |
127 | static GTY(()) tree iocall_endfile; | |
128 | static GTY(()) tree iocall_set_nml_val_int; | |
129 | static GTY(()) tree iocall_set_nml_val_float; | |
130 | static GTY(()) tree iocall_set_nml_val_char; | |
131 | static GTY(()) tree iocall_set_nml_val_complex; | |
132 | static GTY(()) tree iocall_set_nml_val_log; | |
133 | ||
134 | /* Variable for keeping track of what the last data transfer statement | |
135 | was. Used for deciding which subroutine to call when the data | |
f7b529fa | 136 | transfer is complete. */ |
8750f9cd | 137 | static enum { READ, WRITE, IOLENGTH } last_dt; |
6de9cd9a DN |
138 | |
139 | #define ADD_FIELD(name, type) \ | |
140 | ioparm_ ## name = gfc_add_field_to_struct \ | |
141 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
142 | get_identifier (stringize(name)), type) | |
143 | ||
144 | #define ADD_STRING(name) \ | |
145 | ioparm_ ## name = gfc_add_field_to_struct \ | |
146 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
147 | get_identifier (stringize(name)), pchar_type_node); \ | |
148 | ioparm_ ## name ## _len = gfc_add_field_to_struct \ | |
149 | (&(TYPE_FIELDS (ioparm_type)), ioparm_type, \ | |
b8d5e926 | 150 | get_identifier (stringize(name) "_len"), gfc_charlen_type_node) |
6de9cd9a DN |
151 | |
152 | ||
153 | /* Create function decls for IO library functions. */ | |
154 | ||
155 | void | |
156 | gfc_build_io_library_fndecls (void) | |
157 | { | |
e2cad04b RH |
158 | tree gfc_int4_type_node; |
159 | tree gfc_pint4_type_node; | |
6de9cd9a DN |
160 | tree ioparm_type; |
161 | ||
e2cad04b | 162 | gfc_int4_type_node = gfc_get_int_type (4); |
6de9cd9a DN |
163 | gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node); |
164 | ||
e2cad04b RH |
165 | /* Build the st_parameter structure. Information associated with I/O |
166 | calls are transferred here. This must match the one defined in the | |
f7b529fa | 167 | library exactly. */ |
6de9cd9a DN |
168 | |
169 | ioparm_type = make_node (RECORD_TYPE); | |
170 | TYPE_NAME (ioparm_type) = get_identifier ("_gfc_ioparm"); | |
171 | ||
172 | ADD_FIELD (unit, gfc_int4_type_node); | |
173 | ADD_FIELD (err, gfc_int4_type_node); | |
174 | ADD_FIELD (end, gfc_int4_type_node); | |
175 | ADD_FIELD (eor, gfc_int4_type_node); | |
176 | ADD_FIELD (list_format, gfc_int4_type_node); | |
177 | ADD_FIELD (library_return, gfc_int4_type_node); | |
178 | ||
179 | ADD_FIELD (iostat, gfc_pint4_type_node); | |
180 | ADD_FIELD (exist, gfc_pint4_type_node); | |
181 | ADD_FIELD (opened, gfc_pint4_type_node); | |
182 | ADD_FIELD (number, gfc_pint4_type_node); | |
183 | ADD_FIELD (named, gfc_pint4_type_node); | |
b8d5e926 | 184 | ADD_FIELD (rec, gfc_int4_type_node); |
6de9cd9a DN |
185 | ADD_FIELD (nextrec, gfc_pint4_type_node); |
186 | ADD_FIELD (size, gfc_pint4_type_node); | |
187 | ||
b8d5e926 | 188 | ADD_FIELD (recl_in, gfc_int4_type_node); |
6de9cd9a DN |
189 | ADD_FIELD (recl_out, gfc_pint4_type_node); |
190 | ||
8750f9cd JB |
191 | ADD_FIELD (iolength, gfc_pint4_type_node); |
192 | ||
6de9cd9a DN |
193 | ADD_STRING (file); |
194 | ADD_STRING (status); | |
195 | ||
196 | ADD_STRING (access); | |
197 | ADD_STRING (form); | |
198 | ADD_STRING (blank); | |
199 | ADD_STRING (position); | |
200 | ADD_STRING (action); | |
201 | ADD_STRING (delim); | |
202 | ADD_STRING (pad); | |
203 | ADD_STRING (format); | |
204 | ADD_STRING (advance); | |
205 | ADD_STRING (name); | |
206 | ADD_STRING (internal_unit); | |
207 | ADD_STRING (sequential); | |
208 | ||
209 | ADD_STRING (direct); | |
210 | ADD_STRING (formatted); | |
211 | ADD_STRING (unformatted); | |
212 | ADD_STRING (read); | |
213 | ADD_STRING (write); | |
214 | ADD_STRING (readwrite); | |
215 | ||
216 | ADD_STRING (namelist_name); | |
217 | ADD_FIELD (namelist_read_mode, gfc_int4_type_node); | |
218 | ||
219 | gfc_finish_type (ioparm_type); | |
220 | ||
221 | ioparm_var = build_decl (VAR_DECL, get_identifier (PREFIX("ioparm")), | |
222 | ioparm_type); | |
223 | DECL_EXTERNAL (ioparm_var) = 1; | |
224 | TREE_PUBLIC (ioparm_var) = 1; | |
225 | ||
226 | locus_line = build_decl (VAR_DECL, get_identifier (PREFIX("line")), | |
227 | gfc_int4_type_node); | |
228 | DECL_EXTERNAL (locus_line) = 1; | |
229 | TREE_PUBLIC (locus_line) = 1; | |
230 | ||
231 | locus_file = build_decl (VAR_DECL, get_identifier (PREFIX("filename")), | |
232 | pchar_type_node); | |
233 | DECL_EXTERNAL (locus_file) = 1; | |
234 | TREE_PUBLIC (locus_file) = 1; | |
235 | ||
236 | /* Define the transfer functions. */ | |
237 | ||
238 | iocall_x_integer = | |
239 | gfc_build_library_function_decl (get_identifier | |
240 | (PREFIX("transfer_integer")), | |
241 | void_type_node, 2, pvoid_type_node, | |
242 | gfc_int4_type_node); | |
243 | ||
244 | iocall_x_logical = | |
245 | gfc_build_library_function_decl (get_identifier | |
246 | (PREFIX("transfer_logical")), | |
247 | void_type_node, 2, pvoid_type_node, | |
248 | gfc_int4_type_node); | |
249 | ||
250 | iocall_x_character = | |
251 | gfc_build_library_function_decl (get_identifier | |
252 | (PREFIX("transfer_character")), | |
253 | void_type_node, 2, pvoid_type_node, | |
254 | gfc_int4_type_node); | |
255 | ||
256 | iocall_x_real = | |
257 | gfc_build_library_function_decl (get_identifier (PREFIX("transfer_real")), | |
258 | void_type_node, 2, | |
259 | pvoid_type_node, gfc_int4_type_node); | |
260 | ||
261 | iocall_x_complex = | |
262 | gfc_build_library_function_decl (get_identifier | |
263 | (PREFIX("transfer_complex")), | |
264 | void_type_node, 2, pvoid_type_node, | |
265 | gfc_int4_type_node); | |
266 | ||
267 | /* Library entry points */ | |
268 | ||
269 | iocall_read = | |
270 | gfc_build_library_function_decl (get_identifier (PREFIX("st_read")), | |
271 | void_type_node, 0); | |
272 | ||
273 | iocall_write = | |
274 | gfc_build_library_function_decl (get_identifier (PREFIX("st_write")), | |
275 | void_type_node, 0); | |
276 | iocall_open = | |
277 | gfc_build_library_function_decl (get_identifier (PREFIX("st_open")), | |
278 | void_type_node, 0); | |
279 | ||
280 | iocall_close = | |
281 | gfc_build_library_function_decl (get_identifier (PREFIX("st_close")), | |
282 | void_type_node, 0); | |
283 | ||
284 | iocall_inquire = | |
285 | gfc_build_library_function_decl (get_identifier (PREFIX("st_inquire")), | |
286 | gfc_int4_type_node, 0); | |
287 | ||
8750f9cd JB |
288 | iocall_iolength = |
289 | gfc_build_library_function_decl(get_identifier (PREFIX("st_iolength")), | |
290 | void_type_node, 0); | |
291 | ||
6de9cd9a DN |
292 | iocall_rewind = |
293 | gfc_build_library_function_decl (get_identifier (PREFIX("st_rewind")), | |
294 | gfc_int4_type_node, 0); | |
295 | ||
296 | iocall_backspace = | |
297 | gfc_build_library_function_decl (get_identifier (PREFIX("st_backspace")), | |
298 | gfc_int4_type_node, 0); | |
299 | ||
300 | iocall_endfile = | |
301 | gfc_build_library_function_decl (get_identifier (PREFIX("st_endfile")), | |
302 | gfc_int4_type_node, 0); | |
303 | /* Library helpers */ | |
304 | ||
305 | iocall_read_done = | |
306 | gfc_build_library_function_decl (get_identifier (PREFIX("st_read_done")), | |
307 | gfc_int4_type_node, 0); | |
308 | ||
309 | iocall_write_done = | |
310 | gfc_build_library_function_decl (get_identifier (PREFIX("st_write_done")), | |
311 | gfc_int4_type_node, 0); | |
8750f9cd JB |
312 | |
313 | iocall_iolength_done = | |
314 | gfc_build_library_function_decl (get_identifier (PREFIX("st_iolength_done")), | |
315 | gfc_int4_type_node, 0); | |
316 | ||
6de9cd9a DN |
317 | iocall_set_nml_val_int = |
318 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_int")), | |
319 | void_type_node, 4, | |
320 | pvoid_type_node, pvoid_type_node, | |
321 | gfc_int4_type_node,gfc_int4_type_node); | |
322 | ||
323 | iocall_set_nml_val_float = | |
324 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_float")), | |
325 | void_type_node, 4, | |
326 | pvoid_type_node, pvoid_type_node, | |
327 | gfc_int4_type_node,gfc_int4_type_node); | |
328 | iocall_set_nml_val_char = | |
329 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_char")), | |
3bc268e6 | 330 | void_type_node, 5, |
6de9cd9a | 331 | pvoid_type_node, pvoid_type_node, |
3bc268e6 | 332 | gfc_int4_type_node, gfc_int4_type_node, |
d7177ab2 | 333 | gfc_charlen_type_node); |
6de9cd9a DN |
334 | iocall_set_nml_val_complex = |
335 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_complex")), | |
336 | void_type_node, 4, | |
337 | pvoid_type_node, pvoid_type_node, | |
338 | gfc_int4_type_node,gfc_int4_type_node); | |
339 | iocall_set_nml_val_log = | |
340 | gfc_build_library_function_decl (get_identifier (PREFIX("st_set_nml_var_log")), | |
341 | void_type_node, 4, | |
342 | pvoid_type_node, pvoid_type_node, | |
343 | gfc_int4_type_node,gfc_int4_type_node); | |
344 | ||
345 | } | |
346 | ||
347 | ||
348 | /* Generate code to store an non-string I/O parameter into the | |
349 | ioparm structure. This is a pass by value. */ | |
350 | ||
351 | static void | |
352 | set_parameter_value (stmtblock_t * block, tree var, gfc_expr * e) | |
353 | { | |
354 | gfc_se se; | |
355 | tree tmp; | |
356 | ||
357 | gfc_init_se (&se, NULL); | |
358 | gfc_conv_expr_type (&se, e, TREE_TYPE (var)); | |
359 | gfc_add_block_to_block (block, &se.pre); | |
360 | ||
923ab88c | 361 | tmp = build3 (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var, NULL_TREE); |
6de9cd9a DN |
362 | gfc_add_modify_expr (block, tmp, se.expr); |
363 | } | |
364 | ||
365 | ||
366 | /* Generate code to store an non-string I/O parameter into the | |
367 | ioparm structure. This is pass by reference. */ | |
368 | ||
369 | static void | |
370 | set_parameter_ref (stmtblock_t * block, tree var, gfc_expr * e) | |
371 | { | |
372 | gfc_se se; | |
373 | tree tmp; | |
374 | ||
375 | gfc_init_se (&se, NULL); | |
376 | se.want_pointer = 1; | |
377 | ||
378 | gfc_conv_expr_type (&se, e, TREE_TYPE (var)); | |
379 | gfc_add_block_to_block (block, &se.pre); | |
380 | ||
923ab88c | 381 | tmp = build3 (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var, NULL_TREE); |
6de9cd9a DN |
382 | gfc_add_modify_expr (block, tmp, se.expr); |
383 | } | |
384 | ||
385 | ||
386 | /* Generate code to store a string and its length into the | |
387 | ioparm structure. */ | |
388 | ||
389 | static void | |
390 | set_string (stmtblock_t * block, stmtblock_t * postblock, tree var, | |
391 | tree var_len, gfc_expr * e) | |
392 | { | |
393 | gfc_se se; | |
394 | tree tmp; | |
395 | tree msg; | |
396 | tree io; | |
397 | tree len; | |
398 | ||
399 | gfc_init_se (&se, NULL); | |
6de9cd9a | 400 | |
923ab88c TS |
401 | io = build3 (COMPONENT_REF, TREE_TYPE (var), ioparm_var, var, NULL_TREE); |
402 | len = build3 (COMPONENT_REF, TREE_TYPE (var_len), ioparm_var, var_len, | |
403 | NULL_TREE); | |
6de9cd9a | 404 | |
7ab92584 | 405 | /* Integer variable assigned a format label. */ |
6de9cd9a DN |
406 | if (e->ts.type == BT_INTEGER && e->symtree->n.sym->attr.assign == 1) |
407 | { | |
ce2df7c6 | 408 | gfc_conv_label_variable (&se, e); |
6de9cd9a | 409 | msg = |
95638988 | 410 | gfc_build_cstring_const ("Assigned label is not a format label"); |
6de9cd9a | 411 | tmp = GFC_DECL_STRING_LEN (se.expr); |
923ab88c TS |
412 | tmp = build2 (LE_EXPR, boolean_type_node, |
413 | tmp, convert (TREE_TYPE (tmp), integer_minus_one_node)); | |
6de9cd9a DN |
414 | gfc_trans_runtime_check (tmp, msg, &se.pre); |
415 | gfc_add_modify_expr (&se.pre, io, GFC_DECL_ASSIGN_ADDR (se.expr)); | |
416 | gfc_add_modify_expr (&se.pre, len, GFC_DECL_STRING_LEN (se.expr)); | |
417 | } | |
418 | else | |
419 | { | |
ce2df7c6 | 420 | gfc_conv_expr (&se, e); |
6de9cd9a | 421 | gfc_conv_string_parameter (&se); |
7ab92584 | 422 | gfc_add_modify_expr (&se.pre, io, fold_convert (TREE_TYPE (io), se.expr)); |
6de9cd9a DN |
423 | gfc_add_modify_expr (&se.pre, len, se.string_length); |
424 | } | |
425 | ||
426 | gfc_add_block_to_block (block, &se.pre); | |
427 | gfc_add_block_to_block (postblock, &se.post); | |
428 | ||
429 | } | |
430 | ||
431 | ||
432 | /* Set a member of the ioparm structure to one. */ | |
433 | static void | |
434 | set_flag (stmtblock_t *block, tree var) | |
435 | { | |
7ab92584 | 436 | tree tmp, type = TREE_TYPE (var); |
6de9cd9a | 437 | |
923ab88c | 438 | tmp = build3 (COMPONENT_REF, type, ioparm_var, var, NULL_TREE); |
7ab92584 | 439 | gfc_add_modify_expr (block, tmp, convert (type, integer_one_node)); |
6de9cd9a DN |
440 | } |
441 | ||
442 | ||
443 | /* Add a case to a IO-result switch. */ | |
444 | ||
445 | static void | |
446 | add_case (int label_value, gfc_st_label * label, stmtblock_t * body) | |
447 | { | |
448 | tree tmp, value; | |
449 | ||
450 | if (label == NULL) | |
451 | return; /* No label, no case */ | |
452 | ||
7d60be94 | 453 | value = build_int_cst (NULL_TREE, label_value); |
6de9cd9a DN |
454 | |
455 | /* Make a backend label for this case. */ | |
c006df4e | 456 | tmp = gfc_build_label_decl (NULL_TREE); |
6de9cd9a DN |
457 | |
458 | /* And the case itself. */ | |
923ab88c | 459 | tmp = build3_v (CASE_LABEL_EXPR, value, NULL_TREE, tmp); |
6de9cd9a DN |
460 | gfc_add_expr_to_block (body, tmp); |
461 | ||
462 | /* Jump to the label. */ | |
463 | tmp = build1_v (GOTO_EXPR, gfc_get_label_decl (label)); | |
464 | gfc_add_expr_to_block (body, tmp); | |
465 | } | |
466 | ||
467 | ||
468 | /* Generate a switch statement that branches to the correct I/O | |
469 | result label. The last statement of an I/O call stores the | |
470 | result into a variable because there is often cleanup that | |
471 | must be done before the switch, so a temporary would have to | |
472 | be created anyway. */ | |
473 | ||
474 | static void | |
475 | io_result (stmtblock_t * block, gfc_st_label * err_label, | |
476 | gfc_st_label * end_label, gfc_st_label * eor_label) | |
477 | { | |
478 | stmtblock_t body; | |
479 | tree tmp, rc; | |
480 | ||
481 | /* If no labels are specified, ignore the result instead | |
482 | of building an empty switch. */ | |
483 | if (err_label == NULL | |
484 | && end_label == NULL | |
485 | && eor_label == NULL) | |
486 | return; | |
487 | ||
488 | /* Build a switch statement. */ | |
489 | gfc_start_block (&body); | |
490 | ||
491 | /* The label values here must be the same as the values | |
492 | in the library_return enum in the runtime library */ | |
493 | add_case (1, err_label, &body); | |
494 | add_case (2, end_label, &body); | |
495 | add_case (3, eor_label, &body); | |
496 | ||
497 | tmp = gfc_finish_block (&body); | |
498 | ||
923ab88c TS |
499 | rc = build3 (COMPONENT_REF, TREE_TYPE (ioparm_library_return), ioparm_var, |
500 | ioparm_library_return, NULL_TREE); | |
6de9cd9a | 501 | |
923ab88c | 502 | tmp = build3_v (SWITCH_EXPR, rc, tmp, NULL_TREE); |
6de9cd9a DN |
503 | |
504 | gfc_add_expr_to_block (block, tmp); | |
505 | } | |
506 | ||
507 | ||
508 | /* Store the current file and line number to variables so that if a | |
509 | library call goes awry, we can tell the user where the problem is. */ | |
510 | ||
511 | static void | |
512 | set_error_locus (stmtblock_t * block, locus * where) | |
513 | { | |
514 | gfc_file *f; | |
515 | tree tmp; | |
516 | int line; | |
517 | ||
d4fa05b9 | 518 | f = where->lb->file; |
95638988 | 519 | tmp = gfc_build_cstring_const (f->filename); |
6de9cd9a DN |
520 | |
521 | tmp = gfc_build_addr_expr (pchar_type_node, tmp); | |
522 | gfc_add_modify_expr (block, locus_file, tmp); | |
523 | ||
c8cc8542 PB |
524 | #ifdef USE_MAPPED_LOCATION |
525 | line = LOCATION_LINE (where->lb->location); | |
526 | #else | |
d4fa05b9 | 527 | line = where->lb->linenum; |
c8cc8542 | 528 | #endif |
7d60be94 | 529 | gfc_add_modify_expr (block, locus_line, build_int_cst (NULL_TREE, line)); |
6de9cd9a DN |
530 | } |
531 | ||
532 | ||
533 | /* Translate an OPEN statement. */ | |
534 | ||
535 | tree | |
536 | gfc_trans_open (gfc_code * code) | |
537 | { | |
538 | stmtblock_t block, post_block; | |
539 | gfc_open *p; | |
540 | tree tmp; | |
541 | ||
542 | gfc_init_block (&block); | |
543 | gfc_init_block (&post_block); | |
544 | ||
545 | set_error_locus (&block, &code->loc); | |
546 | p = code->ext.open; | |
547 | ||
548 | if (p->unit) | |
549 | set_parameter_value (&block, ioparm_unit, p->unit); | |
550 | ||
551 | if (p->file) | |
552 | set_string (&block, &post_block, ioparm_file, ioparm_file_len, p->file); | |
553 | ||
554 | if (p->status) | |
555 | set_string (&block, &post_block, ioparm_status, | |
556 | ioparm_status_len, p->status); | |
557 | ||
558 | if (p->access) | |
559 | set_string (&block, &post_block, ioparm_access, | |
560 | ioparm_access_len, p->access); | |
561 | ||
562 | if (p->form) | |
563 | set_string (&block, &post_block, ioparm_form, ioparm_form_len, p->form); | |
564 | ||
565 | if (p->recl) | |
566 | set_parameter_value (&block, ioparm_recl_in, p->recl); | |
567 | ||
568 | if (p->blank) | |
569 | set_string (&block, &post_block, ioparm_blank, ioparm_blank_len, | |
570 | p->blank); | |
571 | ||
572 | if (p->position) | |
573 | set_string (&block, &post_block, ioparm_position, | |
574 | ioparm_position_len, p->position); | |
575 | ||
576 | if (p->action) | |
577 | set_string (&block, &post_block, ioparm_action, | |
578 | ioparm_action_len, p->action); | |
579 | ||
580 | if (p->delim) | |
581 | set_string (&block, &post_block, ioparm_delim, ioparm_delim_len, | |
582 | p->delim); | |
583 | ||
584 | if (p->pad) | |
585 | set_string (&block, &post_block, ioparm_pad, ioparm_pad_len, p->pad); | |
586 | ||
587 | if (p->iostat) | |
588 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
589 | ||
590 | if (p->err) | |
591 | set_flag (&block, ioparm_err); | |
592 | ||
593 | tmp = gfc_build_function_call (iocall_open, NULL_TREE); | |
594 | gfc_add_expr_to_block (&block, tmp); | |
595 | ||
596 | gfc_add_block_to_block (&block, &post_block); | |
597 | ||
598 | io_result (&block, p->err, NULL, NULL); | |
599 | ||
600 | return gfc_finish_block (&block); | |
601 | } | |
602 | ||
603 | ||
604 | /* Translate a CLOSE statement. */ | |
605 | ||
606 | tree | |
607 | gfc_trans_close (gfc_code * code) | |
608 | { | |
609 | stmtblock_t block, post_block; | |
610 | gfc_close *p; | |
611 | tree tmp; | |
612 | ||
613 | gfc_init_block (&block); | |
614 | gfc_init_block (&post_block); | |
615 | ||
616 | set_error_locus (&block, &code->loc); | |
617 | p = code->ext.close; | |
618 | ||
619 | if (p->unit) | |
620 | set_parameter_value (&block, ioparm_unit, p->unit); | |
621 | ||
622 | if (p->status) | |
623 | set_string (&block, &post_block, ioparm_status, | |
624 | ioparm_status_len, p->status); | |
625 | ||
626 | if (p->iostat) | |
627 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
628 | ||
629 | if (p->err) | |
630 | set_flag (&block, ioparm_err); | |
631 | ||
632 | tmp = gfc_build_function_call (iocall_close, NULL_TREE); | |
633 | gfc_add_expr_to_block (&block, tmp); | |
634 | ||
635 | gfc_add_block_to_block (&block, &post_block); | |
636 | ||
637 | io_result (&block, p->err, NULL, NULL); | |
638 | ||
639 | return gfc_finish_block (&block); | |
640 | } | |
641 | ||
642 | ||
643 | /* Common subroutine for building a file positioning statement. */ | |
644 | ||
645 | static tree | |
646 | build_filepos (tree function, gfc_code * code) | |
647 | { | |
648 | stmtblock_t block; | |
649 | gfc_filepos *p; | |
650 | tree tmp; | |
651 | ||
652 | p = code->ext.filepos; | |
653 | ||
654 | gfc_init_block (&block); | |
655 | ||
656 | set_error_locus (&block, &code->loc); | |
657 | ||
658 | if (p->unit) | |
659 | set_parameter_value (&block, ioparm_unit, p->unit); | |
660 | ||
661 | if (p->iostat) | |
662 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
663 | ||
664 | if (p->err) | |
665 | set_flag (&block, ioparm_err); | |
666 | ||
667 | tmp = gfc_build_function_call (function, NULL); | |
668 | gfc_add_expr_to_block (&block, tmp); | |
669 | ||
670 | io_result (&block, p->err, NULL, NULL); | |
671 | ||
672 | return gfc_finish_block (&block); | |
673 | } | |
674 | ||
675 | ||
676 | /* Translate a BACKSPACE statement. */ | |
677 | ||
678 | tree | |
679 | gfc_trans_backspace (gfc_code * code) | |
680 | { | |
681 | ||
682 | return build_filepos (iocall_backspace, code); | |
683 | } | |
684 | ||
685 | ||
686 | /* Translate an ENDFILE statement. */ | |
687 | ||
688 | tree | |
689 | gfc_trans_endfile (gfc_code * code) | |
690 | { | |
691 | ||
692 | return build_filepos (iocall_endfile, code); | |
693 | } | |
694 | ||
695 | ||
696 | /* Translate a REWIND statement. */ | |
697 | ||
698 | tree | |
699 | gfc_trans_rewind (gfc_code * code) | |
700 | { | |
701 | ||
702 | return build_filepos (iocall_rewind, code); | |
703 | } | |
704 | ||
705 | ||
706 | /* Translate the non-IOLENGTH form of an INQUIRE statement. */ | |
707 | ||
708 | tree | |
709 | gfc_trans_inquire (gfc_code * code) | |
710 | { | |
711 | stmtblock_t block, post_block; | |
712 | gfc_inquire *p; | |
713 | tree tmp; | |
714 | ||
715 | gfc_init_block (&block); | |
716 | gfc_init_block (&post_block); | |
717 | ||
718 | set_error_locus (&block, &code->loc); | |
719 | p = code->ext.inquire; | |
720 | ||
721 | if (p->unit) | |
722 | set_parameter_value (&block, ioparm_unit, p->unit); | |
723 | ||
724 | if (p->file) | |
725 | set_string (&block, &post_block, ioparm_file, ioparm_file_len, p->file); | |
726 | ||
727 | if (p->iostat) | |
728 | set_parameter_ref (&block, ioparm_iostat, p->iostat); | |
729 | ||
730 | if (p->exist) | |
731 | set_parameter_ref (&block, ioparm_exist, p->exist); | |
732 | ||
733 | if (p->opened) | |
734 | set_parameter_ref (&block, ioparm_opened, p->opened); | |
735 | ||
736 | if (p->number) | |
737 | set_parameter_ref (&block, ioparm_number, p->number); | |
738 | ||
739 | if (p->named) | |
740 | set_parameter_ref (&block, ioparm_named, p->named); | |
741 | ||
742 | if (p->name) | |
743 | set_string (&block, &post_block, ioparm_name, ioparm_name_len, p->name); | |
744 | ||
745 | if (p->access) | |
746 | set_string (&block, &post_block, ioparm_access, | |
747 | ioparm_access_len, p->access); | |
748 | ||
749 | if (p->sequential) | |
750 | set_string (&block, &post_block, ioparm_sequential, | |
751 | ioparm_sequential_len, p->sequential); | |
752 | ||
753 | if (p->direct) | |
754 | set_string (&block, &post_block, ioparm_direct, | |
755 | ioparm_direct_len, p->direct); | |
756 | ||
757 | if (p->form) | |
758 | set_string (&block, &post_block, ioparm_form, ioparm_form_len, p->form); | |
759 | ||
760 | if (p->formatted) | |
761 | set_string (&block, &post_block, ioparm_formatted, | |
762 | ioparm_formatted_len, p->formatted); | |
763 | ||
764 | if (p->unformatted) | |
765 | set_string (&block, &post_block, ioparm_unformatted, | |
766 | ioparm_unformatted_len, p->unformatted); | |
767 | ||
768 | if (p->recl) | |
769 | set_parameter_ref (&block, ioparm_recl_out, p->recl); | |
770 | ||
771 | if (p->nextrec) | |
772 | set_parameter_ref (&block, ioparm_nextrec, p->nextrec); | |
773 | ||
774 | if (p->blank) | |
775 | set_string (&block, &post_block, ioparm_blank, ioparm_blank_len, | |
776 | p->blank); | |
777 | ||
778 | if (p->position) | |
779 | set_string (&block, &post_block, ioparm_position, | |
780 | ioparm_position_len, p->position); | |
781 | ||
782 | if (p->action) | |
783 | set_string (&block, &post_block, ioparm_action, | |
784 | ioparm_action_len, p->action); | |
785 | ||
786 | if (p->read) | |
787 | set_string (&block, &post_block, ioparm_read, ioparm_read_len, p->read); | |
788 | ||
789 | if (p->write) | |
790 | set_string (&block, &post_block, ioparm_write, | |
791 | ioparm_write_len, p->write); | |
792 | ||
793 | if (p->readwrite) | |
794 | set_string (&block, &post_block, ioparm_readwrite, | |
795 | ioparm_readwrite_len, p->readwrite); | |
796 | ||
797 | if (p->delim) | |
798 | set_string (&block, &post_block, ioparm_delim, ioparm_delim_len, | |
799 | p->delim); | |
800 | ||
dae24534 BD |
801 | if (p->pad) |
802 | set_string (&block, &post_block, ioparm_pad, ioparm_pad_len, | |
803 | p->pad); | |
804 | ||
6de9cd9a DN |
805 | if (p->err) |
806 | set_flag (&block, ioparm_err); | |
807 | ||
808 | tmp = gfc_build_function_call (iocall_inquire, NULL); | |
809 | gfc_add_expr_to_block (&block, tmp); | |
810 | ||
811 | gfc_add_block_to_block (&block, &post_block); | |
812 | ||
813 | io_result (&block, p->err, NULL, NULL); | |
814 | ||
815 | return gfc_finish_block (&block); | |
816 | } | |
817 | ||
818 | ||
6de9cd9a | 819 | static gfc_expr * |
cb9e4f55 | 820 | gfc_new_nml_name_expr (const char * name) |
6de9cd9a DN |
821 | { |
822 | gfc_expr * nml_name; | |
823 | nml_name = gfc_get_expr(); | |
824 | nml_name->ref = NULL; | |
825 | nml_name->expr_type = EXPR_CONSTANT; | |
9d64df18 | 826 | nml_name->ts.kind = gfc_default_character_kind; |
6de9cd9a DN |
827 | nml_name->ts.type = BT_CHARACTER; |
828 | nml_name->value.character.length = strlen(name); | |
cb9e4f55 TS |
829 | nml_name->value.character.string = gfc_getmem (strlen (name) + 1); |
830 | strcpy (nml_name->value.character.string, name); | |
6de9cd9a DN |
831 | |
832 | return nml_name; | |
833 | } | |
834 | ||
835 | static gfc_expr * | |
836 | get_new_var_expr(gfc_symbol * sym) | |
837 | { | |
838 | gfc_expr * nml_var; | |
839 | ||
840 | nml_var = gfc_get_expr(); | |
841 | nml_var->expr_type = EXPR_VARIABLE; | |
842 | nml_var->ts = sym->ts; | |
843 | if (sym->as) | |
844 | nml_var->rank = sym->as->rank; | |
845 | nml_var->symtree = (gfc_symtree *)gfc_getmem (sizeof (gfc_symtree)); | |
846 | nml_var->symtree->n.sym = sym; | |
847 | nml_var->where = sym->declared_at; | |
848 | sym->attr.referenced = 1; | |
849 | ||
850 | return nml_var; | |
851 | } | |
852 | ||
3bc268e6 VL |
853 | /* For a scalar variable STRING whose address is ADDR_EXPR, generate a |
854 | call to iocall_set_nml_val. For derived type variable, recursively | |
855 | generate calls to iocall_set_nml_val for each leaf field. The leafs | |
856 | have no names -- their STRING field is null, and are interpreted by | |
857 | the run-time library as having only the value, as in the example: | |
858 | ||
859 | &foo bzz=1,2,3,4,5/ | |
860 | ||
861 | Note that the first output field appears after the name of the | |
862 | variable, not of the field name. This causes a little complication | |
f7b529fa | 863 | documented below. */ |
3bc268e6 VL |
864 | |
865 | static void | |
866 | transfer_namelist_element (stmtblock_t * block, gfc_typespec * ts, tree addr_expr, | |
867 | tree string, tree string_length) | |
868 | { | |
869 | tree tmp, args, arg2; | |
870 | tree expr; | |
871 | ||
6e45f57b | 872 | gcc_assert (POINTER_TYPE_P (TREE_TYPE (addr_expr))); |
3bc268e6 VL |
873 | |
874 | if (ts->type == BT_DERIVED) | |
875 | { | |
876 | gfc_component *c; | |
877 | expr = gfc_build_indirect_ref (addr_expr); | |
878 | ||
879 | for (c = ts->derived->components; c; c = c->next) | |
880 | { | |
881 | tree field = c->backend_decl; | |
6e45f57b | 882 | gcc_assert (field && TREE_CODE (field) == FIELD_DECL); |
923ab88c TS |
883 | tmp = build3 (COMPONENT_REF, TREE_TYPE (field), |
884 | expr, field, NULL_TREE); | |
3bc268e6 VL |
885 | |
886 | if (c->dimension) | |
887 | gfc_todo_error ("NAMELIST IO of array in derived type"); | |
888 | if (!c->pointer) | |
889 | tmp = gfc_build_addr_expr (NULL, tmp); | |
890 | transfer_namelist_element (block, &c->ts, tmp, string, string_length); | |
891 | ||
892 | /* The first output field bears the name of the topmost | |
893 | derived type variable. All other fields are anonymous | |
894 | and appear with nulls in their string and string_length | |
895 | fields. After the first use, we set string and | |
f7b529fa | 896 | string_length to null. */ |
3bc268e6 VL |
897 | string = null_pointer_node; |
898 | string_length = integer_zero_node; | |
899 | } | |
900 | ||
901 | return; | |
902 | } | |
903 | ||
904 | args = gfc_chainon_list (NULL_TREE, addr_expr); | |
905 | args = gfc_chainon_list (args, string); | |
906 | args = gfc_chainon_list (args, string_length); | |
7d60be94 | 907 | arg2 = build_int_cst (gfc_array_index_type, ts->kind); |
3bc268e6 VL |
908 | args = gfc_chainon_list (args,arg2); |
909 | ||
910 | switch (ts->type) | |
911 | { | |
912 | case BT_INTEGER: | |
913 | tmp = gfc_build_function_call (iocall_set_nml_val_int, args); | |
914 | break; | |
915 | ||
916 | case BT_CHARACTER: | |
917 | expr = gfc_build_indirect_ref (addr_expr); | |
6e45f57b | 918 | gcc_assert (TREE_CODE (TREE_TYPE (expr)) == ARRAY_TYPE); |
3bc268e6 VL |
919 | args = gfc_chainon_list (args, |
920 | TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (expr)))); | |
921 | tmp = gfc_build_function_call (iocall_set_nml_val_char, args); | |
922 | break; | |
923 | ||
924 | case BT_REAL: | |
925 | tmp = gfc_build_function_call (iocall_set_nml_val_float, args); | |
926 | break; | |
927 | ||
928 | case BT_LOGICAL: | |
929 | tmp = gfc_build_function_call (iocall_set_nml_val_log, args); | |
930 | break; | |
931 | ||
932 | case BT_COMPLEX: | |
933 | tmp = gfc_build_function_call (iocall_set_nml_val_complex, args); | |
934 | break; | |
935 | ||
936 | default : | |
937 | internal_error ("Bad namelist IO basetype (%d)", ts->type); | |
938 | } | |
939 | ||
940 | gfc_add_expr_to_block (block, tmp); | |
941 | } | |
6de9cd9a DN |
942 | |
943 | /* Create a data transfer statement. Not all of the fields are valid | |
944 | for both reading and writing, but improper use has been filtered | |
945 | out by now. */ | |
946 | ||
947 | static tree | |
948 | build_dt (tree * function, gfc_code * code) | |
949 | { | |
950 | stmtblock_t block, post_block; | |
951 | gfc_dt *dt; | |
3bc268e6 | 952 | tree tmp; |
6de9cd9a | 953 | gfc_expr *nmlname, *nmlvar; |
3bc268e6 | 954 | gfc_namelist *nml; |
6de9cd9a | 955 | gfc_se se,se2; |
6de9cd9a DN |
956 | |
957 | gfc_init_block (&block); | |
958 | gfc_init_block (&post_block); | |
959 | ||
960 | set_error_locus (&block, &code->loc); | |
961 | dt = code->ext.dt; | |
962 | ||
6e45f57b | 963 | gcc_assert (dt != NULL); |
8750f9cd | 964 | |
6de9cd9a DN |
965 | if (dt->io_unit) |
966 | { | |
967 | if (dt->io_unit->ts.type == BT_CHARACTER) | |
968 | { | |
969 | set_string (&block, &post_block, ioparm_internal_unit, | |
970 | ioparm_internal_unit_len, dt->io_unit); | |
971 | } | |
972 | else | |
973 | set_parameter_value (&block, ioparm_unit, dt->io_unit); | |
974 | } | |
975 | ||
976 | if (dt->rec) | |
977 | set_parameter_value (&block, ioparm_rec, dt->rec); | |
978 | ||
979 | if (dt->advance) | |
980 | set_string (&block, &post_block, ioparm_advance, ioparm_advance_len, | |
981 | dt->advance); | |
982 | ||
983 | if (dt->format_expr) | |
984 | set_string (&block, &post_block, ioparm_format, ioparm_format_len, | |
985 | dt->format_expr); | |
986 | ||
987 | if (dt->format_label) | |
988 | { | |
989 | if (dt->format_label == &format_asterisk) | |
990 | set_flag (&block, ioparm_list_format); | |
991 | else | |
992 | set_string (&block, &post_block, ioparm_format, | |
993 | ioparm_format_len, dt->format_label->format); | |
994 | } | |
995 | ||
996 | if (dt->iostat) | |
997 | set_parameter_ref (&block, ioparm_iostat, dt->iostat); | |
998 | ||
999 | if (dt->size) | |
1000 | set_parameter_ref (&block, ioparm_size, dt->size); | |
1001 | ||
1002 | if (dt->err) | |
1003 | set_flag (&block, ioparm_err); | |
1004 | ||
1005 | if (dt->eor) | |
1006 | set_flag(&block, ioparm_eor); | |
1007 | ||
1008 | if (dt->end) | |
1009 | set_flag(&block, ioparm_end); | |
1010 | ||
1011 | if (dt->namelist) | |
1012 | { | |
1013 | if (dt->format_expr || dt->format_label) | |
1014 | fatal_error("A format cannot be specified with a namelist"); | |
1015 | ||
1016 | nmlname = gfc_new_nml_name_expr(dt->namelist->name); | |
1017 | ||
1018 | set_string (&block, &post_block, ioparm_namelist_name, | |
1019 | ioparm_namelist_name_len, nmlname); | |
1020 | ||
1021 | if (last_dt == READ) | |
1022 | set_flag (&block, ioparm_namelist_read_mode); | |
1023 | ||
3bc268e6 VL |
1024 | for (nml = dt->namelist->namelist; nml; nml = nml->next) |
1025 | { | |
1026 | gfc_init_se (&se, NULL); | |
1027 | gfc_init_se (&se2, NULL); | |
1028 | nmlvar = get_new_var_expr (nml->sym); | |
1029 | nmlname = gfc_new_nml_name_expr (nml->sym->name); | |
1030 | gfc_conv_expr_reference (&se2, nmlname); | |
1031 | gfc_conv_expr_reference (&se, nmlvar); | |
1032 | gfc_evaluate_now (se.expr, &se.pre); | |
1033 | ||
1034 | transfer_namelist_element (&block, &nml->sym->ts, se.expr, | |
1035 | se2.expr, se2.string_length); | |
1036 | } | |
6de9cd9a DN |
1037 | } |
1038 | ||
1039 | tmp = gfc_build_function_call (*function, NULL_TREE); | |
1040 | gfc_add_expr_to_block (&block, tmp); | |
1041 | ||
1042 | gfc_add_block_to_block (&block, &post_block); | |
1043 | ||
1044 | return gfc_finish_block (&block); | |
1045 | } | |
1046 | ||
1047 | ||
8750f9cd JB |
1048 | /* Translate the IOLENGTH form of an INQUIRE statement. We treat |
1049 | this as a third sort of data transfer statement, except that | |
e7dc5b4f | 1050 | lengths are summed instead of actually transferring any data. */ |
8750f9cd JB |
1051 | |
1052 | tree | |
1053 | gfc_trans_iolength (gfc_code * code) | |
1054 | { | |
1055 | stmtblock_t block; | |
1056 | gfc_inquire *inq; | |
1057 | tree dt; | |
1058 | ||
1059 | gfc_init_block (&block); | |
1060 | ||
1061 | set_error_locus (&block, &code->loc); | |
1062 | ||
1063 | inq = code->ext.inquire; | |
1064 | ||
1065 | /* First check that preconditions are met. */ | |
6e45f57b PB |
1066 | gcc_assert (inq != NULL); |
1067 | gcc_assert (inq->iolength != NULL); | |
8750f9cd JB |
1068 | |
1069 | /* Connect to the iolength variable. */ | |
1070 | if (inq->iolength) | |
1071 | set_parameter_ref (&block, ioparm_iolength, inq->iolength); | |
1072 | ||
1073 | /* Actual logic. */ | |
1074 | last_dt = IOLENGTH; | |
1075 | dt = build_dt(&iocall_iolength, code); | |
1076 | ||
1077 | gfc_add_expr_to_block (&block, dt); | |
1078 | ||
1079 | return gfc_finish_block (&block); | |
1080 | } | |
1081 | ||
1082 | ||
6de9cd9a DN |
1083 | /* Translate a READ statement. */ |
1084 | ||
1085 | tree | |
1086 | gfc_trans_read (gfc_code * code) | |
1087 | { | |
1088 | ||
1089 | last_dt = READ; | |
1090 | return build_dt (&iocall_read, code); | |
1091 | } | |
1092 | ||
1093 | ||
1094 | /* Translate a WRITE statement */ | |
1095 | ||
1096 | tree | |
1097 | gfc_trans_write (gfc_code * code) | |
1098 | { | |
1099 | ||
1100 | last_dt = WRITE; | |
1101 | return build_dt (&iocall_write, code); | |
1102 | } | |
1103 | ||
1104 | ||
1105 | /* Finish a data transfer statement. */ | |
1106 | ||
1107 | tree | |
1108 | gfc_trans_dt_end (gfc_code * code) | |
1109 | { | |
1110 | tree function, tmp; | |
1111 | stmtblock_t block; | |
1112 | ||
1113 | gfc_init_block (&block); | |
1114 | ||
8750f9cd JB |
1115 | switch (last_dt) |
1116 | { | |
1117 | case READ: | |
1118 | function = iocall_read_done; | |
1119 | break; | |
1120 | ||
1121 | case WRITE: | |
1122 | function = iocall_write_done; | |
1123 | break; | |
1124 | ||
1125 | case IOLENGTH: | |
1126 | function = iocall_iolength_done; | |
1127 | break; | |
1128 | ||
1129 | default: | |
6e45f57b | 1130 | gcc_unreachable (); |
8750f9cd | 1131 | } |
6de9cd9a DN |
1132 | |
1133 | tmp = gfc_build_function_call (function, NULL); | |
1134 | gfc_add_expr_to_block (&block, tmp); | |
1135 | ||
8750f9cd JB |
1136 | if (last_dt != IOLENGTH) |
1137 | { | |
6e45f57b | 1138 | gcc_assert (code->ext.dt != NULL); |
8750f9cd JB |
1139 | io_result (&block, code->ext.dt->err, |
1140 | code->ext.dt->end, code->ext.dt->eor); | |
1141 | } | |
6de9cd9a DN |
1142 | |
1143 | return gfc_finish_block (&block); | |
1144 | } | |
1145 | ||
d2ccf6aa VL |
1146 | static void |
1147 | transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr); | |
1148 | ||
1149 | /* Given an array field in a derived type variable, generate the code | |
1150 | for the loop that iterates over array elements, and the code that | |
1151 | accesses those array elements. Use transfer_expr to generate code | |
1152 | for transferring that element. Because elements may also be | |
1153 | derived types, transfer_expr and transfer_array_component are mutually | |
1154 | recursive. */ | |
1155 | ||
1156 | static tree | |
1157 | transfer_array_component (tree expr, gfc_component * cm) | |
1158 | { | |
1159 | tree tmp; | |
1160 | stmtblock_t body; | |
1161 | stmtblock_t block; | |
1162 | gfc_loopinfo loop; | |
1163 | int n; | |
1164 | gfc_ss *ss; | |
1165 | gfc_se se; | |
1166 | ||
1167 | gfc_start_block (&block); | |
1168 | gfc_init_se (&se, NULL); | |
1169 | ||
1170 | /* Create and initialize Scalarization Status. Unlike in | |
1171 | gfc_trans_transfer, we can't simply use gfc_walk_expr to take | |
1172 | care of this task, because we don't have a gfc_expr at hand. | |
1173 | Build one manually, as in gfc_trans_subarray_assign. */ | |
1174 | ||
1175 | ss = gfc_get_ss (); | |
1176 | ss->type = GFC_SS_COMPONENT; | |
1177 | ss->expr = NULL; | |
1178 | ss->shape = gfc_get_shape (cm->as->rank); | |
1179 | ss->next = gfc_ss_terminator; | |
1180 | ss->data.info.dimen = cm->as->rank; | |
1181 | ss->data.info.descriptor = expr; | |
1182 | ss->data.info.data = gfc_conv_array_data (expr); | |
1183 | ss->data.info.offset = gfc_conv_array_offset (expr); | |
1184 | for (n = 0; n < cm->as->rank; n++) | |
1185 | { | |
1186 | ss->data.info.dim[n] = n; | |
1187 | ss->data.info.start[n] = gfc_conv_array_lbound (expr, n); | |
1188 | ss->data.info.stride[n] = gfc_index_one_node; | |
1189 | ||
1190 | mpz_init (ss->shape[n]); | |
1191 | mpz_sub (ss->shape[n], cm->as->upper[n]->value.integer, | |
1192 | cm->as->lower[n]->value.integer); | |
1193 | mpz_add_ui (ss->shape[n], ss->shape[n], 1); | |
1194 | } | |
1195 | ||
f7b529fa | 1196 | /* Once we got ss, we use scalarizer to create the loop. */ |
d2ccf6aa VL |
1197 | |
1198 | gfc_init_loopinfo (&loop); | |
1199 | gfc_add_ss_to_loop (&loop, ss); | |
1200 | gfc_conv_ss_startstride (&loop); | |
1201 | gfc_conv_loop_setup (&loop); | |
1202 | gfc_mark_ss_chain_used (ss, 1); | |
1203 | gfc_start_scalarized_body (&loop, &body); | |
1204 | ||
1205 | gfc_copy_loopinfo_to_se (&se, &loop); | |
1206 | se.ss = ss; | |
1207 | ||
1208 | /* gfc_conv_tmp_array_ref assumes that se.expr contains the array. */ | |
1209 | se.expr = expr; | |
1210 | gfc_conv_tmp_array_ref (&se); | |
1211 | ||
1212 | /* Now se.expr contains an element of the array. Take the address and pass | |
1213 | it to the IO routines. */ | |
1214 | tmp = gfc_build_addr_expr (NULL, se.expr); | |
1215 | transfer_expr (&se, &cm->ts, tmp); | |
1216 | ||
1217 | /* We are done now with the loop body. Wrap up the scalarizer and | |
f7b529fa | 1218 | return. */ |
d2ccf6aa VL |
1219 | |
1220 | gfc_add_block_to_block (&body, &se.pre); | |
1221 | gfc_add_block_to_block (&body, &se.post); | |
1222 | ||
1223 | gfc_trans_scalarizing_loops (&loop, &body); | |
1224 | ||
1225 | gfc_add_block_to_block (&block, &loop.pre); | |
1226 | gfc_add_block_to_block (&block, &loop.post); | |
1227 | ||
d2ccf6aa VL |
1228 | for (n = 0; n < cm->as->rank; n++) |
1229 | mpz_clear (ss->shape[n]); | |
1230 | gfc_free (ss->shape); | |
1231 | ||
96654664 PB |
1232 | gfc_cleanup_loop (&loop); |
1233 | ||
d2ccf6aa VL |
1234 | return gfc_finish_block (&block); |
1235 | } | |
6de9cd9a DN |
1236 | |
1237 | /* Generate the call for a scalar transfer node. */ | |
1238 | ||
1239 | static void | |
1240 | transfer_expr (gfc_se * se, gfc_typespec * ts, tree addr_expr) | |
1241 | { | |
1242 | tree args, tmp, function, arg2, field, expr; | |
1243 | gfc_component *c; | |
1244 | int kind; | |
1245 | ||
1246 | kind = ts->kind; | |
1247 | function = NULL; | |
1248 | arg2 = NULL; | |
1249 | ||
1250 | switch (ts->type) | |
1251 | { | |
1252 | case BT_INTEGER: | |
7d60be94 | 1253 | arg2 = build_int_cst (NULL_TREE, kind); |
6de9cd9a DN |
1254 | function = iocall_x_integer; |
1255 | break; | |
1256 | ||
1257 | case BT_REAL: | |
7d60be94 | 1258 | arg2 = build_int_cst (NULL_TREE, kind); |
6de9cd9a DN |
1259 | function = iocall_x_real; |
1260 | break; | |
1261 | ||
1262 | case BT_COMPLEX: | |
7d60be94 | 1263 | arg2 = build_int_cst (NULL_TREE, kind); |
6de9cd9a DN |
1264 | function = iocall_x_complex; |
1265 | break; | |
1266 | ||
1267 | case BT_LOGICAL: | |
7d60be94 | 1268 | arg2 = build_int_cst (NULL_TREE, kind); |
6de9cd9a DN |
1269 | function = iocall_x_logical; |
1270 | break; | |
1271 | ||
1272 | case BT_CHARACTER: | |
d2ccf6aa VL |
1273 | if (se->string_length) |
1274 | arg2 = se->string_length; | |
1275 | else | |
1276 | { | |
1277 | tmp = gfc_build_indirect_ref (addr_expr); | |
1278 | gcc_assert (TREE_CODE (TREE_TYPE (tmp)) == ARRAY_TYPE); | |
1279 | arg2 = TYPE_MAX_VALUE (TYPE_DOMAIN (TREE_TYPE (tmp))); | |
1280 | } | |
6de9cd9a DN |
1281 | function = iocall_x_character; |
1282 | break; | |
1283 | ||
1284 | case BT_DERIVED: | |
d2ccf6aa | 1285 | /* Recurse into the elements of the derived type. */ |
6de9cd9a DN |
1286 | expr = gfc_evaluate_now (addr_expr, &se->pre); |
1287 | expr = gfc_build_indirect_ref (expr); | |
1288 | ||
1289 | for (c = ts->derived->components; c; c = c->next) | |
1290 | { | |
1291 | field = c->backend_decl; | |
6e45f57b | 1292 | gcc_assert (field && TREE_CODE (field) == FIELD_DECL); |
6de9cd9a | 1293 | |
923ab88c TS |
1294 | tmp = build3 (COMPONENT_REF, TREE_TYPE (field), expr, field, |
1295 | NULL_TREE); | |
6de9cd9a | 1296 | |
d2ccf6aa VL |
1297 | if (c->dimension) |
1298 | { | |
1299 | tmp = transfer_array_component (tmp, c); | |
1300 | gfc_add_expr_to_block (&se->pre, tmp); | |
1301 | } | |
1302 | else | |
1303 | { | |
1304 | if (!c->pointer) | |
1305 | tmp = gfc_build_addr_expr (NULL, tmp); | |
1306 | transfer_expr (se, &c->ts, tmp); | |
1307 | } | |
6de9cd9a DN |
1308 | } |
1309 | return; | |
1310 | ||
1311 | default: | |
1312 | internal_error ("Bad IO basetype (%d)", ts->type); | |
1313 | } | |
1314 | ||
1315 | args = gfc_chainon_list (NULL_TREE, addr_expr); | |
1316 | args = gfc_chainon_list (args, arg2); | |
1317 | ||
1318 | tmp = gfc_build_function_call (function, args); | |
1319 | gfc_add_expr_to_block (&se->pre, tmp); | |
1320 | gfc_add_block_to_block (&se->pre, &se->post); | |
8750f9cd | 1321 | |
6de9cd9a DN |
1322 | } |
1323 | ||
1324 | ||
1325 | /* gfc_trans_transfer()-- Translate a TRANSFER code node */ | |
1326 | ||
1327 | tree | |
1328 | gfc_trans_transfer (gfc_code * code) | |
1329 | { | |
1330 | stmtblock_t block, body; | |
1331 | gfc_loopinfo loop; | |
1332 | gfc_expr *expr; | |
1333 | gfc_ss *ss; | |
1334 | gfc_se se; | |
1335 | tree tmp; | |
1336 | ||
1337 | gfc_start_block (&block); | |
1338 | ||
1339 | expr = code->expr; | |
1340 | ss = gfc_walk_expr (expr); | |
1341 | ||
1342 | gfc_init_se (&se, NULL); | |
1343 | ||
1344 | if (ss == gfc_ss_terminator) | |
1345 | gfc_init_block (&body); | |
1346 | else | |
1347 | { | |
1348 | /* Initialize the scalarizer. */ | |
1349 | gfc_init_loopinfo (&loop); | |
1350 | gfc_add_ss_to_loop (&loop, ss); | |
1351 | ||
1352 | /* Initialize the loop. */ | |
1353 | gfc_conv_ss_startstride (&loop); | |
1354 | gfc_conv_loop_setup (&loop); | |
1355 | ||
1356 | /* The main loop body. */ | |
1357 | gfc_mark_ss_chain_used (ss, 1); | |
1358 | gfc_start_scalarized_body (&loop, &body); | |
1359 | ||
1360 | gfc_copy_loopinfo_to_se (&se, &loop); | |
1361 | se.ss = ss; | |
1362 | } | |
1363 | ||
1364 | gfc_conv_expr_reference (&se, expr); | |
1365 | ||
1366 | transfer_expr (&se, &expr->ts, se.expr); | |
1367 | ||
1368 | gfc_add_block_to_block (&body, &se.pre); | |
1369 | gfc_add_block_to_block (&body, &se.post); | |
1370 | ||
1371 | if (se.ss == NULL) | |
1372 | tmp = gfc_finish_block (&body); | |
1373 | else | |
1374 | { | |
6e45f57b | 1375 | gcc_assert (se.ss == gfc_ss_terminator); |
6de9cd9a DN |
1376 | gfc_trans_scalarizing_loops (&loop, &body); |
1377 | ||
1378 | gfc_add_block_to_block (&loop.pre, &loop.post); | |
1379 | tmp = gfc_finish_block (&loop.pre); | |
1380 | gfc_cleanup_loop (&loop); | |
1381 | } | |
1382 | ||
1383 | gfc_add_expr_to_block (&block, tmp); | |
1384 | ||
d2ccf6aa | 1385 | return gfc_finish_block (&block); |
6de9cd9a DN |
1386 | } |
1387 | ||
1388 | #include "gt-fortran-trans-io.h" | |
1389 |