Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | /* This is the Assembler Pre-Processor |
2 | Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS 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 | GAS 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 GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | /* Modified by Allen Wirfs-Brock, Instantiations Inc 2/90 */ | |
23 | /* App, the assembler pre-processor. This pre-processor strips out excess | |
24 | spaces, turns single-quoted characters into a decimal constant, and turns | |
25 | # <number> <filename> <garbage> into a .line <number>\n.file <filename> | |
26 | pair. This needs better error-handling. */ | |
27 | ||
28 | #include <stdio.h> | |
29 | #include "as.h" /* For BAD_CASE() only */ | |
30 | ||
31 | #if (__STDC__ != 1) | |
32 | #ifndef const | |
33 | #define const /* empty */ | |
34 | #endif | |
35 | #endif | |
36 | ||
37 | /* Whether we are scrubbing in m68k MRI mode. This is different from | |
38 | flag_m68k_mri, because the two flags will be affected by the .mri | |
39 | pseudo-op at different times. */ | |
40 | static int scrub_m68k_mri; | |
41 | ||
42 | /* The pseudo-op which switches in and out of MRI mode. See the | |
43 | comment in do_scrub_chars. */ | |
44 | static const char mri_pseudo[] = ".mri 0"; | |
45 | ||
46 | #if defined TC_ARM && defined OBJ_ELF | |
47 | /* The pseudo-op for which we need to special-case `@' characters. | |
48 | See the comment in do_scrub_chars. */ | |
49 | static const char symver_pseudo[] = ".symver"; | |
50 | static const char * symver_state; | |
51 | #endif | |
52 | ||
53 | static char lex[256]; | |
54 | static const char symbol_chars[] = | |
55 | "$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; | |
56 | ||
57 | #define LEX_IS_SYMBOL_COMPONENT 1 | |
58 | #define LEX_IS_WHITESPACE 2 | |
59 | #define LEX_IS_LINE_SEPARATOR 3 | |
60 | #define LEX_IS_COMMENT_START 4 | |
61 | #define LEX_IS_LINE_COMMENT_START 5 | |
62 | #define LEX_IS_TWOCHAR_COMMENT_1ST 6 | |
63 | #define LEX_IS_STRINGQUOTE 8 | |
64 | #define LEX_IS_COLON 9 | |
65 | #define LEX_IS_NEWLINE 10 | |
66 | #define LEX_IS_ONECHAR_QUOTE 11 | |
67 | #ifdef TC_V850 | |
68 | #define LEX_IS_DOUBLEDASH_1ST 12 | |
69 | #endif | |
70 | #ifdef TC_M32R | |
f28e8eb3 TW |
71 | #define DOUBLEBAR_PARALLEL |
72 | #endif | |
73 | #ifdef DOUBLEBAR_PARALLEL | |
252b5132 RH |
74 | #define LEX_IS_DOUBLEBAR_1ST 13 |
75 | #endif | |
76 | #define IS_SYMBOL_COMPONENT(c) (lex[c] == LEX_IS_SYMBOL_COMPONENT) | |
77 | #define IS_WHITESPACE(c) (lex[c] == LEX_IS_WHITESPACE) | |
78 | #define IS_LINE_SEPARATOR(c) (lex[c] == LEX_IS_LINE_SEPARATOR) | |
79 | #define IS_COMMENT(c) (lex[c] == LEX_IS_COMMENT_START) | |
80 | #define IS_LINE_COMMENT(c) (lex[c] == LEX_IS_LINE_COMMENT_START) | |
81 | #define IS_NEWLINE(c) (lex[c] == LEX_IS_NEWLINE) | |
82 | ||
83 | static int process_escape PARAMS ((int)); | |
84 | ||
85 | /* FIXME-soon: The entire lexer/parser thingy should be | |
86 | built statically at compile time rather than dynamically | |
87 | each and every time the assembler is run. xoxorich. */ | |
88 | ||
89 | void | |
90 | do_scrub_begin (m68k_mri) | |
91 | int m68k_mri; | |
92 | { | |
93 | const char *p; | |
94 | int c; | |
95 | ||
96 | scrub_m68k_mri = m68k_mri; | |
97 | ||
98 | lex[' '] = LEX_IS_WHITESPACE; | |
99 | lex['\t'] = LEX_IS_WHITESPACE; | |
100 | lex['\r'] = LEX_IS_WHITESPACE; | |
101 | lex['\n'] = LEX_IS_NEWLINE; | |
102 | lex[';'] = LEX_IS_LINE_SEPARATOR; | |
103 | lex[':'] = LEX_IS_COLON; | |
104 | ||
105 | if (! m68k_mri) | |
106 | { | |
107 | lex['"'] = LEX_IS_STRINGQUOTE; | |
108 | ||
109 | #ifndef TC_HPPA | |
110 | lex['\''] = LEX_IS_ONECHAR_QUOTE; | |
111 | #endif | |
112 | ||
113 | #ifdef SINGLE_QUOTE_STRINGS | |
114 | lex['\''] = LEX_IS_STRINGQUOTE; | |
115 | #endif | |
116 | } | |
117 | ||
118 | /* Note: if any other character can be LEX_IS_STRINGQUOTE, the loop | |
119 | in state 5 of do_scrub_chars must be changed. */ | |
120 | ||
121 | /* Note that these override the previous defaults, e.g. if ';' is a | |
122 | comment char, then it isn't a line separator. */ | |
123 | for (p = symbol_chars; *p; ++p) | |
124 | { | |
125 | lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; | |
126 | } /* declare symbol characters */ | |
127 | ||
128 | for (c = 128; c < 256; ++c) | |
129 | lex[c] = LEX_IS_SYMBOL_COMPONENT; | |
130 | ||
131 | #ifdef tc_symbol_chars | |
132 | /* This macro permits the processor to specify all characters which | |
133 | may appears in an operand. This will prevent the scrubber from | |
134 | discarding meaningful whitespace in certain cases. The i386 | |
135 | backend uses this to support prefixes, which can confuse the | |
136 | scrubber as to whether it is parsing operands or opcodes. */ | |
137 | for (p = tc_symbol_chars; *p; ++p) | |
138 | lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; | |
139 | #endif | |
140 | ||
141 | /* The m68k backend wants to be able to change comment_chars. */ | |
142 | #ifndef tc_comment_chars | |
143 | #define tc_comment_chars comment_chars | |
144 | #endif | |
145 | for (p = tc_comment_chars; *p; p++) | |
146 | { | |
147 | lex[(unsigned char) *p] = LEX_IS_COMMENT_START; | |
148 | } /* declare comment chars */ | |
149 | ||
150 | for (p = line_comment_chars; *p; p++) | |
151 | { | |
152 | lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START; | |
153 | } /* declare line comment chars */ | |
154 | ||
155 | for (p = line_separator_chars; *p; p++) | |
156 | { | |
157 | lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR; | |
158 | } /* declare line separators */ | |
159 | ||
160 | /* Only allow slash-star comments if slash is not in use. | |
161 | FIXME: This isn't right. We should always permit them. */ | |
162 | if (lex['/'] == 0) | |
163 | { | |
164 | lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST; | |
165 | } | |
166 | ||
167 | if (m68k_mri) | |
168 | { | |
169 | lex['\''] = LEX_IS_STRINGQUOTE; | |
170 | lex[';'] = LEX_IS_COMMENT_START; | |
171 | lex['*'] = LEX_IS_LINE_COMMENT_START; | |
172 | /* The MRI documentation says '!' is LEX_IS_COMMENT_START, but | |
173 | then it can't be used in an expression. */ | |
174 | lex['!'] = LEX_IS_LINE_COMMENT_START; | |
175 | } | |
176 | ||
177 | #ifdef TC_V850 | |
178 | lex['-'] = LEX_IS_DOUBLEDASH_1ST; | |
179 | #endif | |
f28e8eb3 | 180 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
181 | lex['|'] = LEX_IS_DOUBLEBAR_1ST; |
182 | #endif | |
183 | #ifdef TC_D30V | |
184 | /* must do this is we want VLIW instruction with "->" or "<-" */ | |
185 | lex['-'] = LEX_IS_SYMBOL_COMPONENT; | |
186 | #endif | |
187 | } /* do_scrub_begin() */ | |
188 | ||
189 | /* Saved state of the scrubber */ | |
190 | static int state; | |
191 | static int old_state; | |
192 | static char *out_string; | |
193 | static char out_buf[20]; | |
194 | static int add_newlines; | |
195 | static char *saved_input; | |
196 | static int saved_input_len; | |
2b47531b | 197 | static char input_buffer[32 * 1024]; |
252b5132 RH |
198 | static const char *mri_state; |
199 | static char mri_last_ch; | |
200 | ||
201 | /* Data structure for saving the state of app across #include's. Note that | |
202 | app is called asynchronously to the parsing of the .include's, so our | |
203 | state at the time .include is interpreted is completely unrelated. | |
204 | That's why we have to save it all. */ | |
205 | ||
206 | struct app_save | |
207 | { | |
208 | int state; | |
209 | int old_state; | |
210 | char * out_string; | |
211 | char out_buf[sizeof (out_buf)]; | |
212 | int add_newlines; | |
213 | char * saved_input; | |
214 | int saved_input_len; | |
215 | int scrub_m68k_mri; | |
216 | const char * mri_state; | |
217 | char mri_last_ch; | |
218 | #if defined TC_ARM && defined OBJ_ELF | |
219 | const char * symver_state; | |
220 | #endif | |
221 | }; | |
222 | ||
223 | char * | |
224 | app_push () | |
225 | { | |
226 | register struct app_save *saved; | |
227 | ||
228 | saved = (struct app_save *) xmalloc (sizeof (*saved)); | |
229 | saved->state = state; | |
230 | saved->old_state = old_state; | |
231 | saved->out_string = out_string; | |
232 | memcpy (saved->out_buf, out_buf, sizeof (out_buf)); | |
233 | saved->add_newlines = add_newlines; | |
2b47531b ILT |
234 | if (saved_input == NULL) |
235 | saved->saved_input = NULL; | |
236 | else | |
237 | { | |
238 | saved->saved_input = xmalloc (saved_input_len); | |
239 | memcpy (saved->saved_input, saved_input, saved_input_len); | |
240 | saved->saved_input_len = saved_input_len; | |
241 | } | |
252b5132 RH |
242 | saved->scrub_m68k_mri = scrub_m68k_mri; |
243 | saved->mri_state = mri_state; | |
244 | saved->mri_last_ch = mri_last_ch; | |
245 | #if defined TC_ARM && defined OBJ_ELF | |
246 | saved->symver_state = symver_state; | |
247 | #endif | |
248 | ||
249 | /* do_scrub_begin() is not useful, just wastes time. */ | |
250 | ||
251 | state = 0; | |
252 | saved_input = NULL; | |
253 | ||
254 | return (char *) saved; | |
255 | } | |
256 | ||
257 | void | |
258 | app_pop (arg) | |
259 | char *arg; | |
260 | { | |
261 | register struct app_save *saved = (struct app_save *) arg; | |
262 | ||
263 | /* There is no do_scrub_end (). */ | |
264 | state = saved->state; | |
265 | old_state = saved->old_state; | |
266 | out_string = saved->out_string; | |
267 | memcpy (out_buf, saved->out_buf, sizeof (out_buf)); | |
268 | add_newlines = saved->add_newlines; | |
2b47531b ILT |
269 | if (saved->saved_input == NULL) |
270 | saved_input = NULL; | |
271 | else | |
272 | { | |
ab9da554 | 273 | assert (saved->saved_input_len <= (int) (sizeof input_buffer)); |
2b47531b ILT |
274 | memcpy (input_buffer, saved->saved_input, saved->saved_input_len); |
275 | saved_input = input_buffer; | |
276 | saved_input_len = saved->saved_input_len; | |
277 | free (saved->saved_input); | |
278 | } | |
252b5132 RH |
279 | scrub_m68k_mri = saved->scrub_m68k_mri; |
280 | mri_state = saved->mri_state; | |
281 | mri_last_ch = saved->mri_last_ch; | |
282 | #if defined TC_ARM && defined OBJ_ELF | |
283 | symver_state = saved->symver_state; | |
284 | #endif | |
285 | ||
286 | free (arg); | |
287 | } /* app_pop() */ | |
288 | ||
289 | /* @@ This assumes that \n &c are the same on host and target. This is not | |
290 | necessarily true. */ | |
291 | static int | |
292 | process_escape (ch) | |
293 | int ch; | |
294 | { | |
295 | switch (ch) | |
296 | { | |
297 | case 'b': | |
298 | return '\b'; | |
299 | case 'f': | |
300 | return '\f'; | |
301 | case 'n': | |
302 | return '\n'; | |
303 | case 'r': | |
304 | return '\r'; | |
305 | case 't': | |
306 | return '\t'; | |
307 | case '\'': | |
308 | return '\''; | |
309 | case '"': | |
310 | return '\"'; | |
311 | default: | |
312 | return ch; | |
313 | } | |
314 | } | |
315 | ||
316 | /* This function is called to process input characters. The GET | |
317 | parameter is used to retrieve more input characters. GET should | |
318 | set its parameter to point to a buffer, and return the length of | |
319 | the buffer; it should return 0 at end of file. The scrubbed output | |
320 | characters are put into the buffer starting at TOSTART; the TOSTART | |
321 | buffer is TOLEN bytes in length. The function returns the number | |
322 | of scrubbed characters put into TOSTART. This will be TOLEN unless | |
323 | end of file was seen. This function is arranged as a state | |
324 | machine, and saves its state so that it may return at any point. | |
325 | This is the way the old code used to work. */ | |
326 | ||
327 | int | |
328 | do_scrub_chars (get, tostart, tolen) | |
2b47531b | 329 | int (*get) PARAMS ((char *, int)); |
252b5132 RH |
330 | char *tostart; |
331 | int tolen; | |
332 | { | |
333 | char *to = tostart; | |
334 | char *toend = tostart + tolen; | |
335 | char *from; | |
336 | char *fromend; | |
337 | int fromlen; | |
338 | register int ch, ch2 = 0; | |
339 | ||
340 | /*State 0: beginning of normal line | |
341 | 1: After first whitespace on line (flush more white) | |
342 | 2: After first non-white (opcode) on line (keep 1white) | |
343 | 3: after second white on line (into operands) (flush white) | |
344 | 4: after putting out a .line, put out digits | |
345 | 5: parsing a string, then go to old-state | |
346 | 6: putting out \ escape in a "d string. | |
347 | 7: After putting out a .appfile, put out string. | |
348 | 8: After putting out a .appfile string, flush until newline. | |
349 | 9: After seeing symbol char in state 3 (keep 1white after symchar) | |
350 | 10: After seeing whitespace in state 9 (keep white before symchar) | |
351 | 11: After seeing a symbol character in state 0 (eg a label definition) | |
352 | -1: output string in out_string and go to the state in old_state | |
353 | -2: flush text until a '*' '/' is seen, then go to state old_state | |
354 | #ifdef TC_V850 | |
355 | 12: After seeing a dash, looking for a second dash as a start of comment. | |
356 | #endif | |
f28e8eb3 | 357 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
358 | 13: After seeing a vertical bar, looking for a second vertical bar as a parallel expression seperator. |
359 | #endif | |
360 | */ | |
361 | ||
362 | /* I added states 9 and 10 because the MIPS ECOFF assembler uses | |
363 | constructs like ``.loc 1 20''. This was turning into ``.loc | |
364 | 120''. States 9 and 10 ensure that a space is never dropped in | |
365 | between characters which could appear in a identifier. Ian | |
366 | Taylor, ian@cygnus.com. | |
367 | ||
368 | I added state 11 so that something like "Lfoo add %r25,%r26,%r27" works | |
369 | correctly on the PA (and any other target where colons are optional). | |
370 | Jeff Law, law@cs.utah.edu. | |
371 | ||
372 | I added state 13 so that something like "cmp r1, r2 || trap #1" does not | |
373 | get squashed into "cmp r1,r2||trap#1", with the all important space | |
374 | between the 'trap' and the '#1' being eliminated. nickc@cygnus.com */ | |
375 | ||
376 | /* This macro gets the next input character. */ | |
377 | ||
2b47531b ILT |
378 | #define GET() \ |
379 | (from < fromend \ | |
380 | ? * (unsigned char *) (from++) \ | |
381 | : (saved_input = NULL, \ | |
382 | fromlen = (*get) (input_buffer, sizeof input_buffer), \ | |
383 | from = input_buffer, \ | |
384 | fromend = from + fromlen, \ | |
385 | (fromlen == 0 \ | |
386 | ? EOF \ | |
252b5132 RH |
387 | : * (unsigned char *) (from++)))) |
388 | ||
389 | /* This macro pushes a character back on the input stream. */ | |
390 | ||
391 | #define UNGET(uch) (*--from = (uch)) | |
392 | ||
393 | /* This macro puts a character into the output buffer. If this | |
394 | character fills the output buffer, this macro jumps to the label | |
395 | TOFULL. We use this rather ugly approach because we need to | |
396 | handle two different termination conditions: EOF on the input | |
397 | stream, and a full output buffer. It would be simpler if we | |
398 | always read in the entire input stream before processing it, but | |
399 | I don't want to make such a significant change to the assembler's | |
400 | memory usage. */ | |
401 | ||
402 | #define PUT(pch) \ | |
403 | do \ | |
404 | { \ | |
405 | *to++ = (pch); \ | |
406 | if (to >= toend) \ | |
407 | goto tofull; \ | |
408 | } \ | |
409 | while (0) | |
410 | ||
411 | if (saved_input != NULL) | |
412 | { | |
413 | from = saved_input; | |
414 | fromend = from + saved_input_len; | |
415 | } | |
416 | else | |
417 | { | |
2b47531b | 418 | fromlen = (*get) (input_buffer, sizeof input_buffer); |
252b5132 RH |
419 | if (fromlen == 0) |
420 | return 0; | |
2b47531b | 421 | from = input_buffer; |
252b5132 RH |
422 | fromend = from + fromlen; |
423 | } | |
424 | ||
425 | while (1) | |
426 | { | |
427 | /* The cases in this switch end with continue, in order to | |
428 | branch back to the top of this while loop and generate the | |
429 | next output character in the appropriate state. */ | |
430 | switch (state) | |
431 | { | |
432 | case -1: | |
433 | ch = *out_string++; | |
434 | if (*out_string == '\0') | |
435 | { | |
436 | state = old_state; | |
437 | old_state = 3; | |
438 | } | |
439 | PUT (ch); | |
440 | continue; | |
441 | ||
442 | case -2: | |
443 | for (;;) | |
444 | { | |
445 | do | |
446 | { | |
447 | ch = GET (); | |
448 | ||
449 | if (ch == EOF) | |
450 | { | |
451 | as_warn (_("end of file in comment")); | |
452 | goto fromeof; | |
453 | } | |
454 | ||
455 | if (ch == '\n') | |
456 | PUT ('\n'); | |
457 | } | |
458 | while (ch != '*'); | |
459 | ||
460 | while ((ch = GET ()) == '*') | |
461 | ; | |
462 | ||
463 | if (ch == EOF) | |
464 | { | |
465 | as_warn (_("end of file in comment")); | |
466 | goto fromeof; | |
467 | } | |
468 | ||
469 | if (ch == '/') | |
470 | break; | |
471 | ||
472 | UNGET (ch); | |
473 | } | |
474 | ||
475 | state = old_state; | |
476 | UNGET (' '); | |
477 | continue; | |
478 | ||
479 | case 4: | |
480 | ch = GET (); | |
481 | if (ch == EOF) | |
482 | goto fromeof; | |
483 | else if (ch >= '0' && ch <= '9') | |
484 | PUT (ch); | |
485 | else | |
486 | { | |
487 | while (ch != EOF && IS_WHITESPACE (ch)) | |
488 | ch = GET (); | |
489 | if (ch == '"') | |
490 | { | |
491 | UNGET (ch); | |
492 | if (scrub_m68k_mri) | |
493 | out_string = "\n\tappfile "; | |
494 | else | |
495 | out_string = "\n\t.appfile "; | |
496 | old_state = 7; | |
497 | state = -1; | |
498 | PUT (*out_string++); | |
499 | } | |
500 | else | |
501 | { | |
502 | while (ch != EOF && ch != '\n') | |
503 | ch = GET (); | |
504 | state = 0; | |
505 | PUT (ch); | |
506 | } | |
507 | } | |
508 | continue; | |
509 | ||
510 | case 5: | |
511 | /* We are going to copy everything up to a quote character, | |
512 | with special handling for a backslash. We try to | |
513 | optimize the copying in the simple case without using the | |
514 | GET and PUT macros. */ | |
515 | { | |
516 | char *s; | |
517 | int len; | |
518 | ||
519 | for (s = from; s < fromend; s++) | |
520 | { | |
521 | ch = *s; | |
522 | /* This condition must be changed if the type of any | |
523 | other character can be LEX_IS_STRINGQUOTE. */ | |
524 | if (ch == '\\' | |
525 | || ch == '"' | |
526 | || ch == '\'' | |
527 | || ch == '\n') | |
528 | break; | |
529 | } | |
530 | len = s - from; | |
531 | if (len > toend - to) | |
532 | len = toend - to; | |
533 | if (len > 0) | |
534 | { | |
535 | memcpy (to, from, len); | |
536 | to += len; | |
537 | from += len; | |
538 | } | |
539 | } | |
540 | ||
541 | ch = GET (); | |
542 | if (ch == EOF) | |
543 | { | |
544 | as_warn (_("end of file in string: inserted '\"'")); | |
545 | state = old_state; | |
546 | UNGET ('\n'); | |
547 | PUT ('"'); | |
548 | } | |
549 | else if (lex[ch] == LEX_IS_STRINGQUOTE) | |
550 | { | |
551 | state = old_state; | |
552 | PUT (ch); | |
553 | } | |
554 | #ifndef NO_STRING_ESCAPES | |
555 | else if (ch == '\\') | |
556 | { | |
557 | state = 6; | |
558 | PUT (ch); | |
559 | } | |
560 | #endif | |
561 | else if (scrub_m68k_mri && ch == '\n') | |
562 | { | |
563 | /* Just quietly terminate the string. This permits lines like | |
564 | bne label loop if we haven't reach end yet | |
565 | */ | |
566 | state = old_state; | |
567 | UNGET (ch); | |
568 | PUT ('\''); | |
569 | } | |
570 | else | |
571 | { | |
572 | PUT (ch); | |
573 | } | |
574 | continue; | |
575 | ||
576 | case 6: | |
577 | state = 5; | |
578 | ch = GET (); | |
579 | switch (ch) | |
580 | { | |
581 | /* Handle strings broken across lines, by turning '\n' into | |
582 | '\\' and 'n'. */ | |
583 | case '\n': | |
584 | UNGET ('n'); | |
585 | add_newlines++; | |
586 | PUT ('\\'); | |
587 | continue; | |
588 | ||
589 | case '"': | |
590 | case '\\': | |
591 | case 'b': | |
592 | case 'f': | |
593 | case 'n': | |
594 | case 'r': | |
595 | case 't': | |
596 | case 'v': | |
597 | case 'x': | |
598 | case 'X': | |
599 | case '0': | |
600 | case '1': | |
601 | case '2': | |
602 | case '3': | |
603 | case '4': | |
604 | case '5': | |
605 | case '6': | |
606 | case '7': | |
607 | break; | |
608 | #if defined(IGNORE_NONSTANDARD_ESCAPES) | defined(ONLY_STANDARD_ESCAPES) | |
609 | default: | |
610 | as_warn (_("Unknown escape '\\%c' in string: Ignored"), ch); | |
611 | break; | |
612 | #else /* ONLY_STANDARD_ESCAPES */ | |
613 | default: | |
614 | /* Accept \x as x for any x */ | |
615 | break; | |
616 | #endif /* ONLY_STANDARD_ESCAPES */ | |
617 | ||
618 | case EOF: | |
619 | as_warn (_("End of file in string: '\"' inserted")); | |
620 | PUT ('"'); | |
621 | continue; | |
622 | } | |
623 | PUT (ch); | |
624 | continue; | |
625 | ||
626 | case 7: | |
627 | ch = GET (); | |
628 | state = 5; | |
629 | old_state = 8; | |
630 | if (ch == EOF) | |
631 | goto fromeof; | |
632 | PUT (ch); | |
633 | continue; | |
634 | ||
635 | case 8: | |
636 | do | |
637 | ch = GET (); | |
638 | while (ch != '\n' && ch != EOF); | |
639 | if (ch == EOF) | |
640 | goto fromeof; | |
641 | state = 0; | |
642 | PUT (ch); | |
643 | continue; | |
644 | } | |
645 | ||
646 | /* OK, we are somewhere in states 0 through 4 or 9 through 11 */ | |
647 | ||
648 | /* flushchar: */ | |
649 | ch = GET (); | |
650 | ||
651 | recycle: | |
652 | ||
653 | #if defined TC_ARM && defined OBJ_ELF | |
654 | /* We need to watch out for .symver directives. See the comment later | |
655 | in this function. */ | |
656 | if (symver_state == NULL) | |
657 | { | |
658 | if ((state == 0 || state == 1) && ch == symver_pseudo[0]) | |
659 | symver_state = symver_pseudo + 1; | |
660 | } | |
661 | else | |
662 | { | |
663 | /* We advance to the next state if we find the right | |
664 | character. */ | |
665 | if (ch != '\0' && (*symver_state == ch)) | |
666 | ++symver_state; | |
667 | else if (*symver_state != '\0') | |
668 | /* We did not get the expected character, or we didn't | |
669 | get a valid terminating character after seeing the | |
670 | entire pseudo-op, so we must go back to the beginning. */ | |
671 | symver_state = NULL; | |
672 | else | |
673 | { | |
674 | /* We've read the entire pseudo-op. If this is the end | |
675 | of the line, go back to the beginning. */ | |
676 | if (IS_NEWLINE (ch)) | |
677 | symver_state = NULL; | |
678 | } | |
679 | } | |
680 | #endif /* TC_ARM && OBJ_ELF */ | |
681 | ||
682 | #ifdef TC_M68K | |
683 | /* We want to have pseudo-ops which control whether we are in | |
684 | MRI mode or not. Unfortunately, since m68k MRI mode affects | |
685 | the scrubber, that means that we need a special purpose | |
686 | recognizer here. */ | |
687 | if (mri_state == NULL) | |
688 | { | |
689 | if ((state == 0 || state == 1) | |
690 | && ch == mri_pseudo[0]) | |
691 | mri_state = mri_pseudo + 1; | |
692 | } | |
693 | else | |
694 | { | |
695 | /* We advance to the next state if we find the right | |
696 | character, or if we need a space character and we get any | |
697 | whitespace character, or if we need a '0' and we get a | |
698 | '1' (this is so that we only need one state to handle | |
699 | ``.mri 0'' and ``.mri 1''). */ | |
700 | if (ch != '\0' | |
701 | && (*mri_state == ch | |
702 | || (*mri_state == ' ' | |
703 | && lex[ch] == LEX_IS_WHITESPACE) | |
704 | || (*mri_state == '0' | |
705 | && ch == '1'))) | |
706 | { | |
707 | mri_last_ch = ch; | |
708 | ++mri_state; | |
709 | } | |
710 | else if (*mri_state != '\0' | |
711 | || (lex[ch] != LEX_IS_WHITESPACE | |
712 | && lex[ch] != LEX_IS_NEWLINE)) | |
713 | { | |
714 | /* We did not get the expected character, or we didn't | |
715 | get a valid terminating character after seeing the | |
716 | entire pseudo-op, so we must go back to the | |
717 | beginning. */ | |
718 | mri_state = NULL; | |
719 | } | |
720 | else | |
721 | { | |
722 | /* We've read the entire pseudo-op. mips_last_ch is | |
723 | either '0' or '1' indicating whether to enter or | |
724 | leave MRI mode. */ | |
725 | do_scrub_begin (mri_last_ch == '1'); | |
726 | mri_state = NULL; | |
727 | ||
728 | /* We continue handling the character as usual. The | |
729 | main gas reader must also handle the .mri pseudo-op | |
730 | to control expression parsing and the like. */ | |
731 | } | |
732 | } | |
733 | #endif | |
734 | ||
735 | if (ch == EOF) | |
736 | { | |
737 | if (state != 0) | |
738 | { | |
739 | as_warn (_("end of file not at end of a line; newline inserted")); | |
740 | state = 0; | |
741 | PUT ('\n'); | |
742 | } | |
743 | goto fromeof; | |
744 | } | |
745 | ||
746 | switch (lex[ch]) | |
747 | { | |
748 | case LEX_IS_WHITESPACE: | |
749 | do | |
750 | { | |
751 | ch = GET (); | |
752 | } | |
753 | while (ch != EOF && IS_WHITESPACE (ch)); | |
754 | if (ch == EOF) | |
755 | goto fromeof; | |
756 | ||
757 | if (state == 0) | |
758 | { | |
759 | /* Preserve a single whitespace character at the | |
760 | beginning of a line. */ | |
761 | state = 1; | |
762 | UNGET (ch); | |
763 | PUT (' '); | |
764 | break; | |
765 | } | |
766 | ||
f28e8eb3 TW |
767 | #ifdef KEEP_WHITE_AROUND_COLON |
768 | if (lex[ch] == LEX_IS_COLON) | |
769 | { | |
770 | /* only keep this white if there's no white *after* the colon */ | |
771 | ch2 = GET (); | |
772 | UNGET (ch2); | |
773 | if (!IS_WHITESPACE (ch2)) | |
774 | { | |
775 | state = 9; | |
776 | UNGET (ch); | |
777 | PUT (' '); | |
778 | break; | |
779 | } | |
780 | } | |
781 | #endif | |
252b5132 RH |
782 | if (IS_COMMENT (ch) |
783 | || ch == '/' | |
784 | || IS_LINE_SEPARATOR (ch)) | |
785 | { | |
786 | if (scrub_m68k_mri) | |
787 | { | |
788 | /* In MRI mode, we keep these spaces. */ | |
789 | UNGET (ch); | |
790 | PUT (' '); | |
791 | break; | |
792 | } | |
793 | goto recycle; | |
794 | } | |
795 | ||
796 | /* If we're in state 2 or 11, we've seen a non-white | |
797 | character followed by whitespace. If the next character | |
798 | is ':', this is whitespace after a label name which we | |
799 | normally must ignore. In MRI mode, though, spaces are | |
800 | not permitted between the label and the colon. */ | |
801 | if ((state == 2 || state == 11) | |
802 | && lex[ch] == LEX_IS_COLON | |
803 | && ! scrub_m68k_mri) | |
804 | { | |
805 | state = 1; | |
806 | PUT (ch); | |
807 | break; | |
808 | } | |
809 | ||
810 | switch (state) | |
811 | { | |
812 | case 0: | |
813 | state++; | |
814 | goto recycle; /* Punted leading sp */ | |
815 | case 1: | |
816 | /* We can arrive here if we leave a leading whitespace | |
817 | character at the beginning of a line. */ | |
818 | goto recycle; | |
819 | case 2: | |
820 | state = 3; | |
821 | if (to + 1 < toend) | |
822 | { | |
823 | /* Optimize common case by skipping UNGET/GET. */ | |
824 | PUT (' '); /* Sp after opco */ | |
825 | goto recycle; | |
826 | } | |
827 | UNGET (ch); | |
828 | PUT (' '); | |
829 | break; | |
830 | case 3: | |
831 | if (scrub_m68k_mri) | |
832 | { | |
833 | /* In MRI mode, we keep these spaces. */ | |
834 | UNGET (ch); | |
835 | PUT (' '); | |
836 | break; | |
837 | } | |
838 | goto recycle; /* Sp in operands */ | |
839 | case 9: | |
840 | case 10: | |
841 | if (scrub_m68k_mri) | |
842 | { | |
843 | /* In MRI mode, we keep these spaces. */ | |
844 | state = 3; | |
845 | UNGET (ch); | |
846 | PUT (' '); | |
847 | break; | |
848 | } | |
849 | state = 10; /* Sp after symbol char */ | |
850 | goto recycle; | |
851 | case 11: | |
852 | if (flag_m68k_mri | |
853 | #ifdef LABELS_WITHOUT_COLONS | |
854 | || 1 | |
855 | #endif | |
856 | ) | |
857 | state = 1; | |
858 | else | |
859 | { | |
860 | /* We know that ch is not ':', since we tested that | |
861 | case above. Therefore this is not a label, so it | |
862 | must be the opcode, and we've just seen the | |
863 | whitespace after it. */ | |
864 | state = 3; | |
865 | } | |
866 | UNGET (ch); | |
867 | PUT (' '); /* Sp after label definition. */ | |
868 | break; | |
869 | default: | |
870 | BAD_CASE (state); | |
871 | } | |
872 | break; | |
873 | ||
874 | case LEX_IS_TWOCHAR_COMMENT_1ST: | |
875 | ch2 = GET (); | |
876 | if (ch2 == '*') | |
877 | { | |
878 | for (;;) | |
879 | { | |
880 | do | |
881 | { | |
882 | ch2 = GET (); | |
883 | if (ch2 != EOF && IS_NEWLINE (ch2)) | |
884 | add_newlines++; | |
885 | } | |
886 | while (ch2 != EOF && ch2 != '*'); | |
887 | ||
888 | while (ch2 == '*') | |
889 | ch2 = GET (); | |
890 | ||
891 | if (ch2 == EOF || ch2 == '/') | |
892 | break; | |
893 | ||
894 | /* This UNGET will ensure that we count newlines | |
895 | correctly. */ | |
896 | UNGET (ch2); | |
897 | } | |
898 | ||
899 | if (ch2 == EOF) | |
900 | as_warn (_("end of file in multiline comment")); | |
901 | ||
902 | ch = ' '; | |
903 | goto recycle; | |
904 | } | |
905 | else | |
906 | { | |
907 | if (ch2 != EOF) | |
908 | UNGET (ch2); | |
909 | if (state == 9 || state == 10) | |
910 | state = 3; | |
911 | PUT (ch); | |
912 | } | |
913 | break; | |
914 | ||
915 | case LEX_IS_STRINGQUOTE: | |
916 | if (state == 10) | |
917 | { | |
918 | /* Preserve the whitespace in foo "bar" */ | |
919 | UNGET (ch); | |
920 | state = 3; | |
921 | PUT (' '); | |
922 | ||
923 | /* PUT didn't jump out. We could just break, but we | |
924 | know what will happen, so optimize a bit. */ | |
925 | ch = GET (); | |
926 | old_state = 3; | |
927 | } | |
928 | else if (state == 9) | |
929 | old_state = 3; | |
930 | else | |
931 | old_state = state; | |
932 | state = 5; | |
933 | PUT (ch); | |
934 | break; | |
935 | ||
936 | #ifndef IEEE_STYLE | |
937 | case LEX_IS_ONECHAR_QUOTE: | |
938 | if (state == 10) | |
939 | { | |
940 | /* Preserve the whitespace in foo 'b' */ | |
941 | UNGET (ch); | |
942 | state = 3; | |
943 | PUT (' '); | |
944 | break; | |
945 | } | |
946 | ch = GET (); | |
947 | if (ch == EOF) | |
948 | { | |
949 | as_warn (_("end of file after a one-character quote; \\0 inserted")); | |
950 | ch = 0; | |
951 | } | |
952 | if (ch == '\\') | |
953 | { | |
954 | ch = GET (); | |
955 | if (ch == EOF) | |
956 | { | |
957 | as_warn (_("end of file in escape character")); | |
958 | ch = '\\'; | |
959 | } | |
960 | else | |
961 | ch = process_escape (ch); | |
962 | } | |
963 | sprintf (out_buf, "%d", (int) (unsigned char) ch); | |
964 | ||
965 | /* None of these 'x constants for us. We want 'x'. */ | |
966 | if ((ch = GET ()) != '\'') | |
967 | { | |
968 | #ifdef REQUIRE_CHAR_CLOSE_QUOTE | |
969 | as_warn (_("Missing close quote: (assumed)")); | |
970 | #else | |
971 | if (ch != EOF) | |
972 | UNGET (ch); | |
973 | #endif | |
974 | } | |
975 | if (strlen (out_buf) == 1) | |
976 | { | |
977 | PUT (out_buf[0]); | |
978 | break; | |
979 | } | |
980 | if (state == 9) | |
981 | old_state = 3; | |
982 | else | |
983 | old_state = state; | |
984 | state = -1; | |
985 | out_string = out_buf; | |
986 | PUT (*out_string++); | |
987 | break; | |
988 | #endif | |
989 | ||
990 | case LEX_IS_COLON: | |
f28e8eb3 TW |
991 | #ifdef KEEP_WHITE_AROUND_COLON |
992 | state = 9; | |
993 | #else | |
252b5132 RH |
994 | if (state == 9 || state == 10) |
995 | state = 3; | |
996 | else if (state != 3) | |
997 | state = 1; | |
f28e8eb3 | 998 | #endif |
252b5132 RH |
999 | PUT (ch); |
1000 | break; | |
1001 | ||
1002 | case LEX_IS_NEWLINE: | |
1003 | /* Roll out a bunch of newlines from inside comments, etc. */ | |
1004 | if (add_newlines) | |
1005 | { | |
1006 | --add_newlines; | |
1007 | UNGET (ch); | |
1008 | } | |
1009 | /* fall thru into... */ | |
1010 | ||
1011 | case LEX_IS_LINE_SEPARATOR: | |
1012 | state = 0; | |
1013 | PUT (ch); | |
1014 | break; | |
1015 | ||
1016 | #ifdef TC_V850 | |
1017 | case LEX_IS_DOUBLEDASH_1ST: | |
1018 | ch2 = GET(); | |
1019 | if (ch2 != '-') | |
1020 | { | |
1021 | UNGET (ch2); | |
1022 | goto de_fault; | |
1023 | } | |
1024 | /* read and skip to end of line */ | |
1025 | do | |
1026 | { | |
1027 | ch = GET (); | |
1028 | } | |
1029 | while (ch != EOF && ch != '\n'); | |
1030 | if (ch == EOF) | |
1031 | { | |
1032 | as_warn (_("end of file in comment; newline inserted")); | |
1033 | } | |
1034 | state = 0; | |
1035 | PUT ('\n'); | |
1036 | break; | |
1037 | #endif | |
f28e8eb3 | 1038 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
1039 | case LEX_IS_DOUBLEBAR_1ST: |
1040 | ch2 = GET(); | |
1041 | if (ch2 != '|') | |
1042 | { | |
1043 | UNGET (ch2); | |
1044 | goto de_fault; | |
1045 | } | |
1046 | /* Reset back to state 1 and pretend that we are parsing a line from | |
1047 | just after the first white space. */ | |
1048 | state = 1; | |
1049 | PUT ('|'); | |
1050 | PUT ('|'); | |
1051 | break; | |
1052 | #endif | |
1053 | case LEX_IS_LINE_COMMENT_START: | |
1054 | /* FIXME-someday: The two character comment stuff was badly | |
1055 | thought out. On i386, we want '/' as line comment start | |
1056 | AND we want C style comments. hence this hack. The | |
1057 | whole lexical process should be reworked. xoxorich. */ | |
1058 | if (ch == '/') | |
1059 | { | |
1060 | ch2 = GET (); | |
1061 | if (ch2 == '*') | |
1062 | { | |
1063 | old_state = 3; | |
1064 | state = -2; | |
1065 | break; | |
1066 | } | |
1067 | else | |
1068 | { | |
1069 | UNGET (ch2); | |
1070 | } | |
1071 | } /* bad hack */ | |
1072 | ||
1073 | if (state == 0 || state == 1) /* Only comment at start of line. */ | |
1074 | { | |
1075 | int startch; | |
1076 | ||
1077 | startch = ch; | |
1078 | ||
1079 | do | |
1080 | { | |
1081 | ch = GET (); | |
1082 | } | |
1083 | while (ch != EOF && IS_WHITESPACE (ch)); | |
1084 | if (ch == EOF) | |
1085 | { | |
1086 | as_warn (_("end of file in comment; newline inserted")); | |
1087 | PUT ('\n'); | |
1088 | break; | |
1089 | } | |
1090 | if (ch < '0' || ch > '9' || state != 0 || startch != '#') | |
1091 | { | |
1092 | /* Not a cpp line. */ | |
1093 | while (ch != EOF && !IS_NEWLINE (ch)) | |
1094 | ch = GET (); | |
1095 | if (ch == EOF) | |
1096 | as_warn (_("EOF in Comment: Newline inserted")); | |
1097 | state = 0; | |
1098 | PUT ('\n'); | |
1099 | break; | |
1100 | } | |
1101 | /* Loks like `# 123 "filename"' from cpp. */ | |
1102 | UNGET (ch); | |
1103 | old_state = 4; | |
1104 | state = -1; | |
1105 | if (scrub_m68k_mri) | |
1106 | out_string = "\tappline "; | |
1107 | else | |
1108 | out_string = "\t.appline "; | |
1109 | PUT (*out_string++); | |
1110 | break; | |
1111 | } | |
1112 | ||
1113 | #ifdef TC_D10V | |
1114 | /* All insns end in a char for which LEX_IS_SYMBOL_COMPONENT is true. | |
1115 | Trap is the only short insn that has a first operand that is | |
1116 | neither register nor label. | |
1117 | We must prevent exef0f ||trap #1 to degenerate to exef0f ||trap#1 . | |
1118 | We can't make '#' LEX_IS_SYMBOL_COMPONENT because it is already | |
1119 | LEX_IS_LINE_COMMENT_START. However, it is the only character in | |
1120 | line_comment_chars for d10v, hence we can recognize it as such. */ | |
1121 | /* An alternative approach would be to reset the state to 1 when | |
1122 | we see '||', '<'- or '->', but that seems to be overkill. */ | |
1123 | if (state == 10) PUT (' '); | |
1124 | #endif | |
1125 | /* We have a line comment character which is not at the | |
1126 | start of a line. If this is also a normal comment | |
1127 | character, fall through. Otherwise treat it as a default | |
1128 | character. */ | |
1129 | if (strchr (tc_comment_chars, ch) == NULL | |
1130 | && (! scrub_m68k_mri | |
1131 | || (ch != '!' && ch != '*'))) | |
1132 | goto de_fault; | |
1133 | if (scrub_m68k_mri | |
1134 | && (ch == '!' || ch == '*' || ch == '#') | |
1135 | && state != 1 | |
1136 | && state != 10) | |
1137 | goto de_fault; | |
1138 | /* Fall through. */ | |
1139 | case LEX_IS_COMMENT_START: | |
1140 | #if defined TC_ARM && defined OBJ_ELF | |
1141 | /* On the ARM, `@' is the comment character. | |
1142 | Unfortunately this is also a special character in ELF .symver | |
1143 | directives (and .type, though we deal with those another way). So | |
1144 | we check if this line is such a directive, and treat the character | |
1145 | as default if so. This is a hack. */ | |
1146 | if ((symver_state != NULL) && (*symver_state == 0)) | |
1147 | goto de_fault; | |
1148 | #endif | |
1149 | do | |
1150 | { | |
1151 | ch = GET (); | |
1152 | } | |
1153 | while (ch != EOF && !IS_NEWLINE (ch)); | |
1154 | if (ch == EOF) | |
1155 | as_warn (_("end of file in comment; newline inserted")); | |
1156 | state = 0; | |
1157 | PUT ('\n'); | |
1158 | break; | |
1159 | ||
1160 | case LEX_IS_SYMBOL_COMPONENT: | |
1161 | if (state == 10) | |
1162 | { | |
1163 | /* This is a symbol character following another symbol | |
1164 | character, with whitespace in between. We skipped | |
1165 | the whitespace earlier, so output it now. */ | |
1166 | UNGET (ch); | |
1167 | state = 3; | |
1168 | PUT (' '); | |
1169 | break; | |
1170 | } | |
1171 | ||
1172 | if (state == 3) | |
1173 | state = 9; | |
1174 | ||
1175 | /* This is a common case. Quickly copy CH and all the | |
1176 | following symbol component or normal characters. */ | |
1177 | if (to + 1 < toend | |
1178 | && mri_state == NULL | |
1179 | #if defined TC_ARM && defined OBJ_ELF | |
1180 | && symver_state == NULL | |
1181 | #endif | |
1182 | ) | |
1183 | { | |
1184 | char *s; | |
1185 | int len; | |
1186 | ||
1187 | for (s = from; s < fromend; s++) | |
1188 | { | |
1189 | int type; | |
1190 | ||
1191 | ch2 = * (unsigned char *) s; | |
1192 | type = lex[ch2]; | |
1193 | if (type != 0 | |
1194 | && type != LEX_IS_SYMBOL_COMPONENT) | |
1195 | break; | |
1196 | } | |
1197 | if (s > from) | |
1198 | { | |
1199 | /* Handle the last character normally, for | |
1200 | simplicity. */ | |
1201 | --s; | |
1202 | } | |
1203 | len = s - from; | |
1204 | if (len > (toend - to) - 1) | |
1205 | len = (toend - to) - 1; | |
1206 | if (len > 0) | |
1207 | { | |
1208 | PUT (ch); | |
1209 | if (len > 8) | |
1210 | { | |
1211 | memcpy (to, from, len); | |
1212 | to += len; | |
1213 | from += len; | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | switch (len) | |
1218 | { | |
1219 | case 8: *to++ = *from++; | |
1220 | case 7: *to++ = *from++; | |
1221 | case 6: *to++ = *from++; | |
1222 | case 5: *to++ = *from++; | |
1223 | case 4: *to++ = *from++; | |
1224 | case 3: *to++ = *from++; | |
1225 | case 2: *to++ = *from++; | |
1226 | case 1: *to++ = *from++; | |
1227 | } | |
1228 | } | |
1229 | ch = GET (); | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | /* Fall through. */ | |
1234 | default: | |
1235 | de_fault: | |
1236 | /* Some relatively `normal' character. */ | |
1237 | if (state == 0) | |
1238 | { | |
1239 | state = 11; /* Now seeing label definition */ | |
1240 | } | |
1241 | else if (state == 1) | |
1242 | { | |
1243 | state = 2; /* Ditto */ | |
1244 | } | |
1245 | else if (state == 9) | |
1246 | { | |
1247 | if (lex[ch] != LEX_IS_SYMBOL_COMPONENT) | |
1248 | state = 3; | |
1249 | } | |
1250 | else if (state == 10) | |
1251 | { | |
c5c834aa AH |
1252 | if (ch == '\\') |
1253 | { | |
1254 | /* Special handling for backslash: a backslash may | |
1255 | be the beginning of a formal parameter (of a | |
1256 | macro) following another symbol character, with | |
1257 | whitespace in between. If that is the case, we | |
1258 | output a space before the parameter. Strictly | |
1259 | speaking, correct handling depends upon what the | |
1260 | macro parameter expands into; if the parameter | |
1261 | expands into something which does not start with | |
1262 | an operand character, then we don't want to keep | |
1263 | the space. We don't have enough information to | |
1264 | make the right choice, so here we are making the | |
1265 | choice which is more likely to be correct. */ | |
1266 | PUT (' '); | |
1267 | } | |
1268 | ||
252b5132 RH |
1269 | state = 3; |
1270 | } | |
1271 | PUT (ch); | |
1272 | break; | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | /*NOTREACHED*/ | |
1277 | ||
1278 | fromeof: | |
1279 | /* We have reached the end of the input. */ | |
1280 | return to - tostart; | |
1281 | ||
1282 | tofull: | |
1283 | /* The output buffer is full. Save any input we have not yet | |
1284 | processed. */ | |
1285 | if (fromend > from) | |
1286 | { | |
2b47531b | 1287 | saved_input = from; |
252b5132 RH |
1288 | saved_input_len = fromend - from; |
1289 | } | |
1290 | else | |
2b47531b ILT |
1291 | saved_input = NULL; |
1292 | ||
252b5132 RH |
1293 | return to - tostart; |
1294 | } | |
1295 | ||
1296 | /* end of app.c */ |