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252b5132 | 1 | /* input_scrub.c - Break up input buffers into whole numbers of lines. |
a2c58332 | 2 | Copyright (C) 1987-2022 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 8 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
9 | any later version. |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 | 21 | #include "as.h" |
8b6efd89 | 22 | #include "filenames.h" |
252b5132 RH |
23 | #include "input-file.h" |
24 | #include "sb.h" | |
25 | #include "listing.h" | |
26 | ||
27 | /* | |
28 | * O/S independent module to supply buffers of sanitised source code | |
29 | * to rest of assembler. We get sanitised input data of arbitrary length. | |
30 | * We break these buffers on line boundaries, recombine pieces that | |
31 | * were broken across buffers, and return a buffer of full lines to | |
32 | * the caller. | |
33 | * The last partial line begins the next buffer we build and return to caller. | |
47eebc20 | 34 | * The buffer returned to caller is preceded by BEFORE_STRING and followed |
252b5132 RH |
35 | * by AFTER_STRING, as sentinels. The last character before AFTER_STRING |
36 | * is a newline. | |
37 | * Also looks after line numbers, for e.g. error messages. | |
38 | */ | |
39 | ||
40 | /* | |
41 | * We don't care how filthy our buffers are, but our callers assume | |
42 | * that the following sanitation has already been done. | |
43 | * | |
44 | * No comments, reduce a comment to a space. | |
45 | * Reduce a tab to a space unless it is 1st char of line. | |
46 | * All multiple tabs and spaces collapsed into 1 char. Tab only | |
47 | * legal if 1st char of line. | |
48 | * # line file statements converted to .line x;.file y; statements. | |
49 | * Escaped newlines at end of line: remove them but add as many newlines | |
50 | * to end of statement as you removed in the middle, to synch line numbers. | |
51 | */ | |
52 | \f | |
53 | #define BEFORE_STRING ("\n") | |
e13b337a | 54 | #define AFTER_STRING ("\0") /* memcpy of 0 chars might choke. */ |
252b5132 RH |
55 | #define BEFORE_SIZE (1) |
56 | #define AFTER_SIZE (1) | |
57 | ||
f8ef9cd7 BS |
58 | #ifndef TC_EOL_IN_INSN |
59 | #define TC_EOL_IN_INSN(P) 0 | |
60 | #endif | |
61 | ||
e13b337a KH |
62 | static char *buffer_start; /*->1st char of full buffer area. */ |
63 | static char *partial_where; /*->after last full line in buffer. */ | |
9cee1c1e | 64 | static size_t partial_size; /* >=0. Number of chars in partial line in buffer. */ |
7152f1dc KH |
65 | |
66 | /* Because we need AFTER_STRING just after last full line, it clobbers | |
67 | 1st part of partial line. So we preserve 1st part of partial line | |
68 | here. */ | |
252b5132 | 69 | static char save_source[AFTER_SIZE]; |
7152f1dc | 70 | |
9cee1c1e NS |
71 | /* The size of the input buffer we concatenate |
72 | input_file_give_next_buffer chunks into. Excludes the BEFORE and | |
73 | AFTER counts. */ | |
74 | static size_t buffer_length; | |
252b5132 RH |
75 | |
76 | /* The index into an sb structure we are reading from. -1 if none. */ | |
39a45edc | 77 | static size_t sb_index = -1; |
252b5132 RH |
78 | |
79 | /* If we are reading from an sb structure, this is it. */ | |
80 | static sb from_sb; | |
81 | ||
9f10757c | 82 | /* Should we do a conditional check on from_sb? */ |
657edeab | 83 | static enum expansion from_sb_expansion = expanding_none; |
9f10757c | 84 | |
252b5132 RH |
85 | /* The number of nested sb structures we have included. */ |
86 | int macro_nest; | |
87 | ||
88 | /* We can have more than one source file open at once, though the info for all | |
89 | but the latest one are saved off in a struct input_save. These files remain | |
90 | open, so we are limited by the number of open files allowed by the | |
91 | underlying OS. We may also sequentially read more than one source file in an | |
e13b337a | 92 | assembly. */ |
252b5132 RH |
93 | |
94 | /* We must track the physical file and line number for error messages. We also | |
95 | track a "logical" file and line number corresponding to (C?) compiler | |
96 | source line numbers. Whenever we open a file we must fill in | |
e13b337a | 97 | physical_input_file. So if it is NULL we have not opened any files yet. */ |
252b5132 | 98 | |
3b4dbbbf TS |
99 | static const char *physical_input_file; |
100 | static const char *logical_input_file; | |
252b5132 | 101 | |
144886fa | 102 | /* 1-origin line number in a source file. */ |
e13b337a | 103 | /* A line ends in '\n' or eof. */ |
144886fa | 104 | static unsigned int physical_input_line; |
ecc263d6 | 105 | static unsigned int logical_input_line; |
252b5132 RH |
106 | |
107 | /* Struct used to save the state of the input handler during include files */ | |
ee515fb7 | 108 | struct input_save { |
e972090a NC |
109 | char * buffer_start; |
110 | char * partial_where; | |
9cee1c1e | 111 | size_t partial_size; |
e972090a | 112 | char save_source[AFTER_SIZE]; |
39a45edc | 113 | size_t buffer_length; |
ecc263d6 AM |
114 | const char * physical_input_file; |
115 | const char * logical_input_file; | |
144886fa | 116 | unsigned int physical_input_line; |
ecc263d6 | 117 | unsigned int logical_input_line; |
39a45edc | 118 | size_t sb_index; |
e972090a | 119 | sb from_sb; |
657edeab | 120 | enum expansion from_sb_expansion; /* Should we do a conditional check? */ |
e972090a NC |
121 | struct input_save * next_saved_file; /* Chain of input_saves. */ |
122 | char * input_file_save; /* Saved state of input routines. */ | |
123 | char * saved_position; /* Caller's saved position in buf. */ | |
7152f1dc | 124 | }; |
252b5132 | 125 | |
b1f1fa96 KH |
126 | static struct input_save *input_scrub_push (char *saved_position); |
127 | static char *input_scrub_pop (struct input_save *arg); | |
252b5132 RH |
128 | |
129 | /* Saved information about the file that .include'd this one. When we hit EOF, | |
e13b337a | 130 | we automatically pop to that file. */ |
252b5132 RH |
131 | |
132 | static struct input_save *next_saved_file; | |
133 | ||
9cee1c1e NS |
134 | /* Initialize input buffering. */ |
135 | ||
136 | static void | |
137 | input_scrub_reinit (void) | |
138 | { | |
139 | input_file_begin (); /* Reinitialize! */ | |
ecc263d6 | 140 | logical_input_line = -1u; |
9cee1c1e NS |
141 | logical_input_file = NULL; |
142 | ||
143 | buffer_length = input_file_buffer_size () * 2; | |
144 | buffer_start = XNEWVEC (char, BEFORE_SIZE + AFTER_SIZE + 1 + buffer_length); | |
145 | memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE); | |
146 | } | |
147 | ||
252b5132 RH |
148 | /* Push the state of input reading and scrubbing so that we can #include. |
149 | The return value is a 'void *' (fudged for old compilers) to a save | |
e13b337a | 150 | area, which can be restored by passing it to input_scrub_pop(). */ |
7152f1dc | 151 | |
252b5132 | 152 | static struct input_save * |
b1f1fa96 | 153 | input_scrub_push (char *saved_position) |
252b5132 | 154 | { |
ed9e98c2 | 155 | struct input_save *saved; |
252b5132 | 156 | |
add39d23 | 157 | saved = XNEW (struct input_save); |
252b5132 RH |
158 | |
159 | saved->saved_position = saved_position; | |
160 | saved->buffer_start = buffer_start; | |
161 | saved->partial_where = partial_where; | |
162 | saved->partial_size = partial_size; | |
163 | saved->buffer_length = buffer_length; | |
164 | saved->physical_input_file = physical_input_file; | |
165 | saved->logical_input_file = logical_input_file; | |
166 | saved->physical_input_line = physical_input_line; | |
167 | saved->logical_input_line = logical_input_line; | |
168 | saved->sb_index = sb_index; | |
169 | saved->from_sb = from_sb; | |
657edeab | 170 | saved->from_sb_expansion = from_sb_expansion; |
252b5132 RH |
171 | memcpy (saved->save_source, save_source, sizeof (save_source)); |
172 | saved->next_saved_file = next_saved_file; | |
173 | saved->input_file_save = input_file_push (); | |
174 | ||
252b5132 RH |
175 | sb_index = -1; |
176 | ||
9cee1c1e | 177 | input_scrub_reinit (); |
252b5132 RH |
178 | |
179 | return saved; | |
7152f1dc | 180 | } |
252b5132 RH |
181 | |
182 | static char * | |
b1f1fa96 | 183 | input_scrub_pop (struct input_save *saved) |
252b5132 RH |
184 | { |
185 | char *saved_position; | |
186 | ||
187 | input_scrub_end (); /* Finish off old buffer */ | |
188 | ||
189 | input_file_pop (saved->input_file_save); | |
190 | saved_position = saved->saved_position; | |
191 | buffer_start = saved->buffer_start; | |
192 | buffer_length = saved->buffer_length; | |
193 | physical_input_file = saved->physical_input_file; | |
194 | logical_input_file = saved->logical_input_file; | |
195 | physical_input_line = saved->physical_input_line; | |
196 | logical_input_line = saved->logical_input_line; | |
197 | sb_index = saved->sb_index; | |
198 | from_sb = saved->from_sb; | |
657edeab | 199 | from_sb_expansion = saved->from_sb_expansion; |
252b5132 RH |
200 | partial_where = saved->partial_where; |
201 | partial_size = saved->partial_size; | |
202 | next_saved_file = saved->next_saved_file; | |
203 | memcpy (save_source, saved->save_source, sizeof (save_source)); | |
204 | ||
205 | free (saved); | |
206 | return saved_position; | |
207 | } | |
208 | \f | |
252b5132 | 209 | void |
b1f1fa96 | 210 | input_scrub_begin (void) |
252b5132 RH |
211 | { |
212 | know (strlen (BEFORE_STRING) == BEFORE_SIZE); | |
7152f1dc KH |
213 | know (strlen (AFTER_STRING) == AFTER_SIZE |
214 | || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1)); | |
252b5132 | 215 | |
e13b337a | 216 | physical_input_file = NULL; /* No file read yet. */ |
252b5132 | 217 | next_saved_file = NULL; /* At EOF, don't pop to any other file */ |
9cee1c1e | 218 | input_scrub_reinit (); |
252b5132 RH |
219 | do_scrub_begin (flag_m68k_mri); |
220 | } | |
221 | ||
222 | void | |
b1f1fa96 | 223 | input_scrub_end (void) |
252b5132 RH |
224 | { |
225 | if (buffer_start) | |
226 | { | |
227 | free (buffer_start); | |
228 | buffer_start = 0; | |
229 | input_file_end (); | |
230 | } | |
231 | } | |
232 | ||
7152f1dc KH |
233 | /* Start reading input from a new file. |
234 | Return start of caller's part of buffer. */ | |
252b5132 | 235 | |
7152f1dc | 236 | char * |
3b4dbbbf | 237 | input_scrub_new_file (const char *filename) |
252b5132 RH |
238 | { |
239 | input_file_open (filename, !flag_no_comments); | |
240 | physical_input_file = filename[0] ? filename : _("{standard input}"); | |
241 | physical_input_line = 0; | |
242 | ||
243 | partial_size = 0; | |
244 | return (buffer_start + BEFORE_SIZE); | |
245 | } | |
246 | ||
252b5132 RH |
247 | /* Include a file from the current file. Save our state, cause it to |
248 | be restored on EOF, and begin handling a new file. Same result as | |
e13b337a | 249 | input_scrub_new_file. */ |
252b5132 RH |
250 | |
251 | char * | |
3b4dbbbf | 252 | input_scrub_include_file (const char *filename, char *position) |
252b5132 RH |
253 | { |
254 | next_saved_file = input_scrub_push (position); | |
657edeab | 255 | from_sb_expansion = expanding_none; |
252b5132 RH |
256 | return input_scrub_new_file (filename); |
257 | } | |
258 | ||
259 | /* Start getting input from an sb structure. This is used when | |
260 | expanding a macro. */ | |
261 | ||
262 | void | |
657edeab | 263 | input_scrub_include_sb (sb *from, char *position, enum expansion expansion) |
252b5132 | 264 | { |
d2ae702c L |
265 | int newline; |
266 | ||
252b5132 | 267 | if (macro_nest > max_macro_nest) |
dcb87e5c | 268 | as_fatal (_("macros nested too deeply")); |
252b5132 RH |
269 | ++macro_nest; |
270 | ||
657edeab JB |
271 | gas_assert (expansion < expanding_nested); |
272 | ||
9f10757c | 273 | #ifdef md_macro_start |
657edeab | 274 | if (expansion == expanding_macro) |
9f10757c TW |
275 | { |
276 | md_macro_start (); | |
277 | } | |
278 | #endif | |
279 | ||
252b5132 RH |
280 | next_saved_file = input_scrub_push (position); |
281 | ||
d2ae702c L |
282 | /* Allocate sufficient space: from->len + optional newline. */ |
283 | newline = from->len >= 1 && from->ptr[0] != '\n'; | |
284 | sb_build (&from_sb, from->len + newline); | |
657edeab JB |
285 | if (expansion == expanding_repeat && from_sb_expansion >= expanding_macro) |
286 | expansion = expanding_nested; | |
287 | from_sb_expansion = expansion; | |
d2ae702c | 288 | if (newline) |
252b5132 RH |
289 | { |
290 | /* Add the sentinel required by read.c. */ | |
291 | sb_add_char (&from_sb, '\n'); | |
292 | } | |
c19d1205 | 293 | sb_scrub_and_add_sb (&from_sb, from); |
cb26feec HPN |
294 | |
295 | /* Make sure the parser looks at defined contents when it scans for | |
296 | e.g. end-of-line at the end of a macro. */ | |
d2ae702c | 297 | sb_terminate (&from_sb); |
cb26feec | 298 | |
252b5132 RH |
299 | sb_index = 1; |
300 | ||
301 | /* These variables are reset by input_scrub_push. Restore them | |
302 | since we are, after all, still at the same point in the file. */ | |
303 | logical_input_line = next_saved_file->logical_input_line; | |
304 | logical_input_file = next_saved_file->logical_input_file; | |
305 | } | |
306 | ||
307 | void | |
b1f1fa96 | 308 | input_scrub_close (void) |
252b5132 RH |
309 | { |
310 | input_file_close (); | |
144886fa | 311 | physical_input_line = 0; |
ecc263d6 | 312 | logical_input_line = -1u; |
252b5132 RH |
313 | } |
314 | ||
315 | char * | |
b1f1fa96 | 316 | input_scrub_next_buffer (char **bufp) |
252b5132 | 317 | { |
ed9e98c2 | 318 | char *limit; /*->just after last char of buffer. */ |
252b5132 | 319 | |
39a45edc | 320 | if (sb_index != (size_t) -1) |
252b5132 RH |
321 | { |
322 | if (sb_index >= from_sb.len) | |
323 | { | |
324 | sb_kill (&from_sb); | |
657edeab | 325 | if (from_sb_expansion == expanding_macro) |
7152f1dc KH |
326 | { |
327 | cond_finish_check (macro_nest); | |
9f10757c | 328 | #ifdef md_macro_end |
7152f1dc KH |
329 | /* Allow the target to clean up per-macro expansion |
330 | data. */ | |
331 | md_macro_end (); | |
9f10757c | 332 | #endif |
7152f1dc KH |
333 | } |
334 | --macro_nest; | |
252b5132 | 335 | partial_where = NULL; |
511b1657 | 336 | partial_size = 0; |
252b5132 RH |
337 | if (next_saved_file != NULL) |
338 | *bufp = input_scrub_pop (next_saved_file); | |
339 | return partial_where; | |
340 | } | |
341 | ||
342 | partial_where = from_sb.ptr + from_sb.len; | |
343 | partial_size = 0; | |
344 | *bufp = from_sb.ptr + sb_index; | |
345 | sb_index = from_sb.len; | |
346 | return partial_where; | |
347 | } | |
348 | ||
252b5132 RH |
349 | if (partial_size) |
350 | { | |
9cee1c1e | 351 | memmove (buffer_start + BEFORE_SIZE, partial_where, partial_size); |
252b5132 RH |
352 | memcpy (buffer_start + BEFORE_SIZE, save_source, AFTER_SIZE); |
353 | } | |
511b1657 AM |
354 | |
355 | while (1) | |
252b5132 | 356 | { |
511b1657 | 357 | char *p; |
9cee1c1e | 358 | char *start = buffer_start + BEFORE_SIZE + partial_size; |
511b1657 AM |
359 | |
360 | *bufp = buffer_start + BEFORE_SIZE; | |
9cee1c1e | 361 | limit = input_file_give_next_buffer (start); |
511b1657 | 362 | if (!limit) |
252b5132 | 363 | { |
9cee1c1e NS |
364 | if (!partial_size) |
365 | /* End of this file. */ | |
511b1657 | 366 | break; |
252b5132 | 367 | |
511b1657 AM |
368 | as_warn (_("end of file not at end of a line; newline inserted")); |
369 | p = buffer_start + BEFORE_SIZE + partial_size; | |
370 | *p++ = '\n'; | |
371 | limit = p; | |
372 | } | |
373 | else | |
374 | { | |
f8ef9cd7 BS |
375 | /* Terminate the buffer to avoid confusing TC_EOL_IN_INSN. */ |
376 | *limit = '\0'; | |
511b1657 AM |
377 | |
378 | /* Find last newline. */ | |
f8ef9cd7 | 379 | for (p = limit - 1; *p != '\n' || TC_EOL_IN_INSN (p); --p) |
9cee1c1e NS |
380 | if (p < start) |
381 | goto read_more; | |
252b5132 RH |
382 | ++p; |
383 | } | |
384 | ||
578c64a4 NC |
385 | if (multibyte_handling == multibyte_warn) |
386 | (void) scan_for_multibyte_characters ((const unsigned char *) p, | |
387 | (const unsigned char *) limit, | |
388 | true /* Generate warnings */); | |
389 | ||
9cee1c1e NS |
390 | /* We found a newline in the newly read chars. */ |
391 | partial_where = p; | |
392 | partial_size = limit - p; | |
393 | ||
394 | /* Save the fragment after that last newline. */ | |
395 | memcpy (save_source, partial_where, (int) AFTER_SIZE); | |
396 | memcpy (partial_where, AFTER_STRING, (int) AFTER_SIZE); | |
397 | return partial_where; | |
252b5132 | 398 | |
9cee1c1e NS |
399 | read_more: |
400 | /* Didn't find a newline. Read more text. */ | |
511b1657 | 401 | partial_size = limit - (buffer_start + BEFORE_SIZE); |
9cee1c1e NS |
402 | if (buffer_length - input_file_buffer_size () < partial_size) |
403 | { | |
404 | /* Increase the buffer when it doesn't have room for the | |
405 | next block of input. */ | |
406 | buffer_length *= 2; | |
407 | buffer_start = XRESIZEVEC (char, buffer_start, | |
408 | (buffer_length | |
409 | + BEFORE_SIZE + AFTER_SIZE + 1)); | |
410 | } | |
252b5132 | 411 | } |
511b1657 AM |
412 | |
413 | /* Tell the listing we've finished the file. */ | |
414 | LISTING_EOF (); | |
415 | ||
416 | /* If we should pop to another file at EOF, do it. */ | |
417 | partial_where = NULL; | |
418 | if (next_saved_file) | |
419 | *bufp = input_scrub_pop (next_saved_file); | |
420 | ||
421 | return partial_where; | |
7152f1dc | 422 | } |
252b5132 | 423 | \f |
7152f1dc KH |
424 | /* The remaining part of this file deals with line numbers, error |
425 | messages and so on. Return TRUE if we opened any file. */ | |
252b5132 | 426 | |
252b5132 | 427 | int |
b1f1fa96 | 428 | seen_at_least_1_file (void) |
252b5132 RH |
429 | { |
430 | return (physical_input_file != NULL); | |
431 | } | |
432 | ||
433 | void | |
b1f1fa96 | 434 | bump_line_counters (void) |
252b5132 | 435 | { |
39a45edc | 436 | if (sb_index == (size_t) -1) |
7992631e JB |
437 | ++physical_input_line; |
438 | ||
657edeab JB |
439 | /* PR gas/16908 workaround: Don't bump logical line numbers while |
440 | expanding macros, unless file (and maybe line; see as_where()) are | |
441 | used inside the macro. */ | |
442 | if (logical_input_line != -1u && from_sb_expansion < expanding_macro) | |
7992631e | 443 | ++logical_input_line; |
252b5132 RH |
444 | } |
445 | \f | |
7152f1dc KH |
446 | /* Tells us what the new logical line number and file are. |
447 | If the line_number is -1, we don't change the current logical line | |
448 | number. If it is -2, we decrement the logical line number (this is | |
449 | to support the .appfile pseudo-op inserted into the stream by | |
450 | do_scrub_chars). | |
2ee1792b JB |
451 | If fname is NULL, we don't change the current logical file name, unless |
452 | bit 3 of flags is set. | |
7152f1dc KH |
453 | Returns nonzero if the filename actually changes. */ |
454 | ||
252b5132 | 455 | int |
3b4dbbbf | 456 | new_logical_line_flags (const char *fname, /* DON'T destroy it! We point to it! */ |
93e914b2 AO |
457 | int line_number, |
458 | int flags) | |
252b5132 | 459 | { |
93e914b2 AO |
460 | switch (flags) |
461 | { | |
462 | case 0: | |
463 | break; | |
464 | case 1: | |
465 | if (line_number != -1) | |
466 | abort (); | |
467 | break; | |
468 | case 1 << 1: | |
469 | case 1 << 2: | |
470 | /* FIXME: we could check that include nesting is correct. */ | |
471 | break; | |
2ee1792b JB |
472 | case 1 << 3: |
473 | if (line_number < 0 || fname != NULL || next_saved_file == NULL) | |
474 | abort (); | |
657edeab JB |
475 | /* PR gas/16908 workaround: Ignore updates when nested inside a macro |
476 | expansion. */ | |
477 | if (from_sb_expansion == expanding_nested) | |
478 | return 0; | |
2ee1792b JB |
479 | if (next_saved_file->logical_input_file) |
480 | fname = next_saved_file->logical_input_file; | |
481 | else | |
482 | fname = next_saved_file->physical_input_file; | |
483 | break; | |
93e914b2 AO |
484 | default: |
485 | abort (); | |
486 | } | |
487 | ||
252b5132 RH |
488 | if (line_number >= 0) |
489 | logical_input_line = line_number; | |
93e914b2 AO |
490 | else if (line_number == -1 && fname && !*fname && (flags & (1 << 2))) |
491 | { | |
492 | logical_input_file = physical_input_file; | |
493 | logical_input_line = physical_input_line; | |
494 | fname = NULL; | |
495 | } | |
252b5132 | 496 | |
657edeab JB |
497 | /* When encountering file or line changes inside a macro, arrange for |
498 | bump_line_counters() to henceforth increment the logical line number | |
499 | again, just like it does when expanding repeats. See as_where() for | |
500 | why changing file or line alone doesn't alter expansion mode. */ | |
501 | if (from_sb_expansion == expanding_macro | |
502 | && (logical_input_file != NULL || fname != NULL) | |
503 | && logical_input_line != -1u) | |
504 | from_sb_expansion = expanding_repeat; | |
505 | ||
252b5132 RH |
506 | if (fname |
507 | && (logical_input_file == NULL | |
8b6efd89 | 508 | || filename_cmp (logical_input_file, fname))) |
252b5132 RH |
509 | { |
510 | logical_input_file = fname; | |
511 | return 1; | |
512 | } | |
513 | else | |
514 | return 0; | |
7152f1dc | 515 | } |
93e914b2 AO |
516 | |
517 | int | |
3b4dbbbf | 518 | new_logical_line (const char *fname, int line_number) |
93e914b2 AO |
519 | { |
520 | return new_logical_line_flags (fname, line_number, 0); | |
521 | } | |
522 | ||
252b5132 | 523 | \f |
39865a7f NC |
524 | /* Return the current physical input file name and line number, if known */ |
525 | ||
526 | const char * | |
527 | as_where_physical (unsigned int *linep) | |
528 | { | |
529 | if (physical_input_file != NULL) | |
530 | { | |
531 | if (linep != NULL) | |
532 | *linep = physical_input_line; | |
533 | return physical_input_file; | |
534 | } | |
535 | ||
536 | if (linep != NULL) | |
537 | *linep = 0; | |
538 | return NULL; | |
539 | } | |
540 | ||
3b4dbbbf | 541 | /* Return the current file name and line number. */ |
7152f1dc | 542 | |
3b4dbbbf TS |
543 | const char * |
544 | as_where (unsigned int *linep) | |
252b5132 RH |
545 | { |
546 | if (logical_input_file != NULL | |
ecc263d6 | 547 | && (linep == NULL || logical_input_line != -1u)) |
252b5132 | 548 | { |
252b5132 RH |
549 | if (linep != NULL) |
550 | *linep = logical_input_line; | |
3b4dbbbf | 551 | return logical_input_file; |
252b5132 | 552 | } |
39865a7f NC |
553 | |
554 | return as_where_physical (linep); | |
7152f1dc | 555 | } |
39865a7f | 556 |