Commit | Line | Data |
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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 | ||
5b93d8bb AM |
109 | #if ! defined (TC_HPPA) && ! defined (TC_I370) |
110 | /* I370 uses single-quotes to delimit integer, float constants */ | |
252b5132 RH |
111 | lex['\''] = LEX_IS_ONECHAR_QUOTE; |
112 | #endif | |
113 | ||
114 | #ifdef SINGLE_QUOTE_STRINGS | |
115 | lex['\''] = LEX_IS_STRINGQUOTE; | |
116 | #endif | |
117 | } | |
118 | ||
119 | /* Note: if any other character can be LEX_IS_STRINGQUOTE, the loop | |
120 | in state 5 of do_scrub_chars must be changed. */ | |
121 | ||
122 | /* Note that these override the previous defaults, e.g. if ';' is a | |
123 | comment char, then it isn't a line separator. */ | |
124 | for (p = symbol_chars; *p; ++p) | |
125 | { | |
126 | lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; | |
127 | } /* declare symbol characters */ | |
128 | ||
129 | for (c = 128; c < 256; ++c) | |
130 | lex[c] = LEX_IS_SYMBOL_COMPONENT; | |
131 | ||
132 | #ifdef tc_symbol_chars | |
133 | /* This macro permits the processor to specify all characters which | |
134 | may appears in an operand. This will prevent the scrubber from | |
135 | discarding meaningful whitespace in certain cases. The i386 | |
136 | backend uses this to support prefixes, which can confuse the | |
137 | scrubber as to whether it is parsing operands or opcodes. */ | |
138 | for (p = tc_symbol_chars; *p; ++p) | |
139 | lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT; | |
140 | #endif | |
141 | ||
142 | /* The m68k backend wants to be able to change comment_chars. */ | |
143 | #ifndef tc_comment_chars | |
144 | #define tc_comment_chars comment_chars | |
145 | #endif | |
146 | for (p = tc_comment_chars; *p; p++) | |
147 | { | |
148 | lex[(unsigned char) *p] = LEX_IS_COMMENT_START; | |
149 | } /* declare comment chars */ | |
150 | ||
151 | for (p = line_comment_chars; *p; p++) | |
152 | { | |
153 | lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START; | |
154 | } /* declare line comment chars */ | |
155 | ||
156 | for (p = line_separator_chars; *p; p++) | |
157 | { | |
158 | lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR; | |
159 | } /* declare line separators */ | |
160 | ||
161 | /* Only allow slash-star comments if slash is not in use. | |
162 | FIXME: This isn't right. We should always permit them. */ | |
163 | if (lex['/'] == 0) | |
164 | { | |
165 | lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST; | |
166 | } | |
167 | ||
168 | if (m68k_mri) | |
169 | { | |
170 | lex['\''] = LEX_IS_STRINGQUOTE; | |
171 | lex[';'] = LEX_IS_COMMENT_START; | |
172 | lex['*'] = LEX_IS_LINE_COMMENT_START; | |
173 | /* The MRI documentation says '!' is LEX_IS_COMMENT_START, but | |
174 | then it can't be used in an expression. */ | |
175 | lex['!'] = LEX_IS_LINE_COMMENT_START; | |
176 | } | |
177 | ||
178 | #ifdef TC_V850 | |
179 | lex['-'] = LEX_IS_DOUBLEDASH_1ST; | |
180 | #endif | |
f28e8eb3 | 181 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
182 | lex['|'] = LEX_IS_DOUBLEBAR_1ST; |
183 | #endif | |
184 | #ifdef TC_D30V | |
185 | /* must do this is we want VLIW instruction with "->" or "<-" */ | |
186 | lex['-'] = LEX_IS_SYMBOL_COMPONENT; | |
187 | #endif | |
188 | } /* do_scrub_begin() */ | |
189 | ||
190 | /* Saved state of the scrubber */ | |
191 | static int state; | |
192 | static int old_state; | |
193 | static char *out_string; | |
194 | static char out_buf[20]; | |
195 | static int add_newlines; | |
196 | static char *saved_input; | |
197 | static int saved_input_len; | |
2b47531b | 198 | static char input_buffer[32 * 1024]; |
252b5132 RH |
199 | static const char *mri_state; |
200 | static char mri_last_ch; | |
201 | ||
202 | /* Data structure for saving the state of app across #include's. Note that | |
203 | app is called asynchronously to the parsing of the .include's, so our | |
204 | state at the time .include is interpreted is completely unrelated. | |
205 | That's why we have to save it all. */ | |
206 | ||
207 | struct app_save | |
208 | { | |
209 | int state; | |
210 | int old_state; | |
211 | char * out_string; | |
212 | char out_buf[sizeof (out_buf)]; | |
213 | int add_newlines; | |
214 | char * saved_input; | |
215 | int saved_input_len; | |
216 | int scrub_m68k_mri; | |
217 | const char * mri_state; | |
218 | char mri_last_ch; | |
219 | #if defined TC_ARM && defined OBJ_ELF | |
220 | const char * symver_state; | |
221 | #endif | |
222 | }; | |
223 | ||
224 | char * | |
225 | app_push () | |
226 | { | |
227 | register struct app_save *saved; | |
228 | ||
229 | saved = (struct app_save *) xmalloc (sizeof (*saved)); | |
230 | saved->state = state; | |
231 | saved->old_state = old_state; | |
232 | saved->out_string = out_string; | |
233 | memcpy (saved->out_buf, out_buf, sizeof (out_buf)); | |
234 | saved->add_newlines = add_newlines; | |
2b47531b ILT |
235 | if (saved_input == NULL) |
236 | saved->saved_input = NULL; | |
237 | else | |
238 | { | |
239 | saved->saved_input = xmalloc (saved_input_len); | |
240 | memcpy (saved->saved_input, saved_input, saved_input_len); | |
241 | saved->saved_input_len = saved_input_len; | |
242 | } | |
252b5132 RH |
243 | saved->scrub_m68k_mri = scrub_m68k_mri; |
244 | saved->mri_state = mri_state; | |
245 | saved->mri_last_ch = mri_last_ch; | |
246 | #if defined TC_ARM && defined OBJ_ELF | |
247 | saved->symver_state = symver_state; | |
248 | #endif | |
249 | ||
250 | /* do_scrub_begin() is not useful, just wastes time. */ | |
251 | ||
252 | state = 0; | |
253 | saved_input = NULL; | |
254 | ||
255 | return (char *) saved; | |
256 | } | |
257 | ||
258 | void | |
259 | app_pop (arg) | |
260 | char *arg; | |
261 | { | |
262 | register struct app_save *saved = (struct app_save *) arg; | |
263 | ||
264 | /* There is no do_scrub_end (). */ | |
265 | state = saved->state; | |
266 | old_state = saved->old_state; | |
267 | out_string = saved->out_string; | |
268 | memcpy (out_buf, saved->out_buf, sizeof (out_buf)); | |
269 | add_newlines = saved->add_newlines; | |
2b47531b ILT |
270 | if (saved->saved_input == NULL) |
271 | saved_input = NULL; | |
272 | else | |
273 | { | |
ab9da554 | 274 | assert (saved->saved_input_len <= (int) (sizeof input_buffer)); |
2b47531b ILT |
275 | memcpy (input_buffer, saved->saved_input, saved->saved_input_len); |
276 | saved_input = input_buffer; | |
277 | saved_input_len = saved->saved_input_len; | |
278 | free (saved->saved_input); | |
279 | } | |
252b5132 RH |
280 | scrub_m68k_mri = saved->scrub_m68k_mri; |
281 | mri_state = saved->mri_state; | |
282 | mri_last_ch = saved->mri_last_ch; | |
283 | #if defined TC_ARM && defined OBJ_ELF | |
284 | symver_state = saved->symver_state; | |
285 | #endif | |
286 | ||
287 | free (arg); | |
288 | } /* app_pop() */ | |
289 | ||
290 | /* @@ This assumes that \n &c are the same on host and target. This is not | |
291 | necessarily true. */ | |
292 | static int | |
293 | process_escape (ch) | |
294 | int ch; | |
295 | { | |
296 | switch (ch) | |
297 | { | |
298 | case 'b': | |
299 | return '\b'; | |
300 | case 'f': | |
301 | return '\f'; | |
302 | case 'n': | |
303 | return '\n'; | |
304 | case 'r': | |
305 | return '\r'; | |
306 | case 't': | |
307 | return '\t'; | |
308 | case '\'': | |
309 | return '\''; | |
310 | case '"': | |
311 | return '\"'; | |
312 | default: | |
313 | return ch; | |
314 | } | |
315 | } | |
316 | ||
317 | /* This function is called to process input characters. The GET | |
318 | parameter is used to retrieve more input characters. GET should | |
319 | set its parameter to point to a buffer, and return the length of | |
320 | the buffer; it should return 0 at end of file. The scrubbed output | |
321 | characters are put into the buffer starting at TOSTART; the TOSTART | |
322 | buffer is TOLEN bytes in length. The function returns the number | |
323 | of scrubbed characters put into TOSTART. This will be TOLEN unless | |
324 | end of file was seen. This function is arranged as a state | |
325 | machine, and saves its state so that it may return at any point. | |
326 | This is the way the old code used to work. */ | |
327 | ||
328 | int | |
329 | do_scrub_chars (get, tostart, tolen) | |
2b47531b | 330 | int (*get) PARAMS ((char *, int)); |
252b5132 RH |
331 | char *tostart; |
332 | int tolen; | |
333 | { | |
334 | char *to = tostart; | |
335 | char *toend = tostart + tolen; | |
336 | char *from; | |
337 | char *fromend; | |
338 | int fromlen; | |
339 | register int ch, ch2 = 0; | |
340 | ||
341 | /*State 0: beginning of normal line | |
342 | 1: After first whitespace on line (flush more white) | |
343 | 2: After first non-white (opcode) on line (keep 1white) | |
344 | 3: after second white on line (into operands) (flush white) | |
345 | 4: after putting out a .line, put out digits | |
346 | 5: parsing a string, then go to old-state | |
347 | 6: putting out \ escape in a "d string. | |
348 | 7: After putting out a .appfile, put out string. | |
349 | 8: After putting out a .appfile string, flush until newline. | |
350 | 9: After seeing symbol char in state 3 (keep 1white after symchar) | |
351 | 10: After seeing whitespace in state 9 (keep white before symchar) | |
352 | 11: After seeing a symbol character in state 0 (eg a label definition) | |
353 | -1: output string in out_string and go to the state in old_state | |
354 | -2: flush text until a '*' '/' is seen, then go to state old_state | |
355 | #ifdef TC_V850 | |
356 | 12: After seeing a dash, looking for a second dash as a start of comment. | |
357 | #endif | |
f28e8eb3 | 358 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
359 | 13: After seeing a vertical bar, looking for a second vertical bar as a parallel expression seperator. |
360 | #endif | |
361 | */ | |
362 | ||
363 | /* I added states 9 and 10 because the MIPS ECOFF assembler uses | |
364 | constructs like ``.loc 1 20''. This was turning into ``.loc | |
365 | 120''. States 9 and 10 ensure that a space is never dropped in | |
366 | between characters which could appear in a identifier. Ian | |
367 | Taylor, ian@cygnus.com. | |
368 | ||
369 | I added state 11 so that something like "Lfoo add %r25,%r26,%r27" works | |
370 | correctly on the PA (and any other target where colons are optional). | |
371 | Jeff Law, law@cs.utah.edu. | |
372 | ||
373 | I added state 13 so that something like "cmp r1, r2 || trap #1" does not | |
374 | get squashed into "cmp r1,r2||trap#1", with the all important space | |
375 | between the 'trap' and the '#1' being eliminated. nickc@cygnus.com */ | |
376 | ||
377 | /* This macro gets the next input character. */ | |
378 | ||
2b47531b ILT |
379 | #define GET() \ |
380 | (from < fromend \ | |
381 | ? * (unsigned char *) (from++) \ | |
382 | : (saved_input = NULL, \ | |
383 | fromlen = (*get) (input_buffer, sizeof input_buffer), \ | |
384 | from = input_buffer, \ | |
385 | fromend = from + fromlen, \ | |
386 | (fromlen == 0 \ | |
387 | ? EOF \ | |
252b5132 RH |
388 | : * (unsigned char *) (from++)))) |
389 | ||
390 | /* This macro pushes a character back on the input stream. */ | |
391 | ||
392 | #define UNGET(uch) (*--from = (uch)) | |
393 | ||
394 | /* This macro puts a character into the output buffer. If this | |
395 | character fills the output buffer, this macro jumps to the label | |
396 | TOFULL. We use this rather ugly approach because we need to | |
397 | handle two different termination conditions: EOF on the input | |
398 | stream, and a full output buffer. It would be simpler if we | |
399 | always read in the entire input stream before processing it, but | |
400 | I don't want to make such a significant change to the assembler's | |
401 | memory usage. */ | |
402 | ||
403 | #define PUT(pch) \ | |
404 | do \ | |
405 | { \ | |
406 | *to++ = (pch); \ | |
407 | if (to >= toend) \ | |
408 | goto tofull; \ | |
409 | } \ | |
410 | while (0) | |
411 | ||
412 | if (saved_input != NULL) | |
413 | { | |
414 | from = saved_input; | |
415 | fromend = from + saved_input_len; | |
416 | } | |
417 | else | |
418 | { | |
2b47531b | 419 | fromlen = (*get) (input_buffer, sizeof input_buffer); |
252b5132 RH |
420 | if (fromlen == 0) |
421 | return 0; | |
2b47531b | 422 | from = input_buffer; |
252b5132 RH |
423 | fromend = from + fromlen; |
424 | } | |
425 | ||
426 | while (1) | |
427 | { | |
428 | /* The cases in this switch end with continue, in order to | |
429 | branch back to the top of this while loop and generate the | |
430 | next output character in the appropriate state. */ | |
431 | switch (state) | |
432 | { | |
433 | case -1: | |
434 | ch = *out_string++; | |
435 | if (*out_string == '\0') | |
436 | { | |
437 | state = old_state; | |
438 | old_state = 3; | |
439 | } | |
440 | PUT (ch); | |
441 | continue; | |
442 | ||
443 | case -2: | |
444 | for (;;) | |
445 | { | |
446 | do | |
447 | { | |
448 | ch = GET (); | |
449 | ||
450 | if (ch == EOF) | |
451 | { | |
452 | as_warn (_("end of file in comment")); | |
453 | goto fromeof; | |
454 | } | |
455 | ||
456 | if (ch == '\n') | |
457 | PUT ('\n'); | |
458 | } | |
459 | while (ch != '*'); | |
460 | ||
461 | while ((ch = GET ()) == '*') | |
462 | ; | |
463 | ||
464 | if (ch == EOF) | |
465 | { | |
466 | as_warn (_("end of file in comment")); | |
467 | goto fromeof; | |
468 | } | |
469 | ||
470 | if (ch == '/') | |
471 | break; | |
472 | ||
473 | UNGET (ch); | |
474 | } | |
475 | ||
476 | state = old_state; | |
477 | UNGET (' '); | |
478 | continue; | |
479 | ||
480 | case 4: | |
481 | ch = GET (); | |
482 | if (ch == EOF) | |
483 | goto fromeof; | |
484 | else if (ch >= '0' && ch <= '9') | |
485 | PUT (ch); | |
486 | else | |
487 | { | |
488 | while (ch != EOF && IS_WHITESPACE (ch)) | |
489 | ch = GET (); | |
490 | if (ch == '"') | |
491 | { | |
492 | UNGET (ch); | |
493 | if (scrub_m68k_mri) | |
494 | out_string = "\n\tappfile "; | |
495 | else | |
496 | out_string = "\n\t.appfile "; | |
497 | old_state = 7; | |
498 | state = -1; | |
499 | PUT (*out_string++); | |
500 | } | |
501 | else | |
502 | { | |
503 | while (ch != EOF && ch != '\n') | |
504 | ch = GET (); | |
505 | state = 0; | |
506 | PUT (ch); | |
507 | } | |
508 | } | |
509 | continue; | |
510 | ||
511 | case 5: | |
512 | /* We are going to copy everything up to a quote character, | |
513 | with special handling for a backslash. We try to | |
514 | optimize the copying in the simple case without using the | |
515 | GET and PUT macros. */ | |
516 | { | |
517 | char *s; | |
518 | int len; | |
519 | ||
520 | for (s = from; s < fromend; s++) | |
521 | { | |
522 | ch = *s; | |
523 | /* This condition must be changed if the type of any | |
524 | other character can be LEX_IS_STRINGQUOTE. */ | |
525 | if (ch == '\\' | |
526 | || ch == '"' | |
527 | || ch == '\'' | |
528 | || ch == '\n') | |
529 | break; | |
530 | } | |
531 | len = s - from; | |
532 | if (len > toend - to) | |
533 | len = toend - to; | |
534 | if (len > 0) | |
535 | { | |
536 | memcpy (to, from, len); | |
537 | to += len; | |
538 | from += len; | |
539 | } | |
540 | } | |
541 | ||
542 | ch = GET (); | |
543 | if (ch == EOF) | |
544 | { | |
545 | as_warn (_("end of file in string: inserted '\"'")); | |
546 | state = old_state; | |
547 | UNGET ('\n'); | |
548 | PUT ('"'); | |
549 | } | |
550 | else if (lex[ch] == LEX_IS_STRINGQUOTE) | |
551 | { | |
552 | state = old_state; | |
553 | PUT (ch); | |
554 | } | |
555 | #ifndef NO_STRING_ESCAPES | |
556 | else if (ch == '\\') | |
557 | { | |
558 | state = 6; | |
559 | PUT (ch); | |
560 | } | |
561 | #endif | |
562 | else if (scrub_m68k_mri && ch == '\n') | |
563 | { | |
564 | /* Just quietly terminate the string. This permits lines like | |
565 | bne label loop if we haven't reach end yet | |
566 | */ | |
567 | state = old_state; | |
568 | UNGET (ch); | |
569 | PUT ('\''); | |
570 | } | |
571 | else | |
572 | { | |
573 | PUT (ch); | |
574 | } | |
575 | continue; | |
576 | ||
577 | case 6: | |
578 | state = 5; | |
579 | ch = GET (); | |
580 | switch (ch) | |
581 | { | |
582 | /* Handle strings broken across lines, by turning '\n' into | |
583 | '\\' and 'n'. */ | |
584 | case '\n': | |
585 | UNGET ('n'); | |
586 | add_newlines++; | |
587 | PUT ('\\'); | |
588 | continue; | |
589 | ||
590 | case '"': | |
591 | case '\\': | |
592 | case 'b': | |
593 | case 'f': | |
594 | case 'n': | |
595 | case 'r': | |
596 | case 't': | |
597 | case 'v': | |
598 | case 'x': | |
599 | case 'X': | |
600 | case '0': | |
601 | case '1': | |
602 | case '2': | |
603 | case '3': | |
604 | case '4': | |
605 | case '5': | |
606 | case '6': | |
607 | case '7': | |
608 | break; | |
609 | #if defined(IGNORE_NONSTANDARD_ESCAPES) | defined(ONLY_STANDARD_ESCAPES) | |
610 | default: | |
611 | as_warn (_("Unknown escape '\\%c' in string: Ignored"), ch); | |
612 | break; | |
613 | #else /* ONLY_STANDARD_ESCAPES */ | |
614 | default: | |
615 | /* Accept \x as x for any x */ | |
616 | break; | |
617 | #endif /* ONLY_STANDARD_ESCAPES */ | |
618 | ||
619 | case EOF: | |
620 | as_warn (_("End of file in string: '\"' inserted")); | |
621 | PUT ('"'); | |
622 | continue; | |
623 | } | |
624 | PUT (ch); | |
625 | continue; | |
626 | ||
627 | case 7: | |
628 | ch = GET (); | |
629 | state = 5; | |
630 | old_state = 8; | |
631 | if (ch == EOF) | |
632 | goto fromeof; | |
633 | PUT (ch); | |
634 | continue; | |
635 | ||
636 | case 8: | |
637 | do | |
638 | ch = GET (); | |
639 | while (ch != '\n' && ch != EOF); | |
640 | if (ch == EOF) | |
641 | goto fromeof; | |
642 | state = 0; | |
643 | PUT (ch); | |
644 | continue; | |
645 | } | |
646 | ||
647 | /* OK, we are somewhere in states 0 through 4 or 9 through 11 */ | |
648 | ||
649 | /* flushchar: */ | |
650 | ch = GET (); | |
651 | ||
652 | recycle: | |
653 | ||
654 | #if defined TC_ARM && defined OBJ_ELF | |
655 | /* We need to watch out for .symver directives. See the comment later | |
656 | in this function. */ | |
657 | if (symver_state == NULL) | |
658 | { | |
659 | if ((state == 0 || state == 1) && ch == symver_pseudo[0]) | |
660 | symver_state = symver_pseudo + 1; | |
661 | } | |
662 | else | |
663 | { | |
664 | /* We advance to the next state if we find the right | |
665 | character. */ | |
666 | if (ch != '\0' && (*symver_state == ch)) | |
667 | ++symver_state; | |
668 | else if (*symver_state != '\0') | |
669 | /* We did not get the expected character, or we didn't | |
670 | get a valid terminating character after seeing the | |
671 | entire pseudo-op, so we must go back to the beginning. */ | |
672 | symver_state = NULL; | |
673 | else | |
674 | { | |
675 | /* We've read the entire pseudo-op. If this is the end | |
676 | of the line, go back to the beginning. */ | |
677 | if (IS_NEWLINE (ch)) | |
678 | symver_state = NULL; | |
679 | } | |
680 | } | |
681 | #endif /* TC_ARM && OBJ_ELF */ | |
682 | ||
683 | #ifdef TC_M68K | |
684 | /* We want to have pseudo-ops which control whether we are in | |
685 | MRI mode or not. Unfortunately, since m68k MRI mode affects | |
686 | the scrubber, that means that we need a special purpose | |
687 | recognizer here. */ | |
688 | if (mri_state == NULL) | |
689 | { | |
690 | if ((state == 0 || state == 1) | |
691 | && ch == mri_pseudo[0]) | |
692 | mri_state = mri_pseudo + 1; | |
693 | } | |
694 | else | |
695 | { | |
696 | /* We advance to the next state if we find the right | |
697 | character, or if we need a space character and we get any | |
698 | whitespace character, or if we need a '0' and we get a | |
699 | '1' (this is so that we only need one state to handle | |
700 | ``.mri 0'' and ``.mri 1''). */ | |
701 | if (ch != '\0' | |
702 | && (*mri_state == ch | |
703 | || (*mri_state == ' ' | |
704 | && lex[ch] == LEX_IS_WHITESPACE) | |
705 | || (*mri_state == '0' | |
706 | && ch == '1'))) | |
707 | { | |
708 | mri_last_ch = ch; | |
709 | ++mri_state; | |
710 | } | |
711 | else if (*mri_state != '\0' | |
712 | || (lex[ch] != LEX_IS_WHITESPACE | |
713 | && lex[ch] != LEX_IS_NEWLINE)) | |
714 | { | |
715 | /* We did not get the expected character, or we didn't | |
716 | get a valid terminating character after seeing the | |
717 | entire pseudo-op, so we must go back to the | |
718 | beginning. */ | |
719 | mri_state = NULL; | |
720 | } | |
721 | else | |
722 | { | |
723 | /* We've read the entire pseudo-op. mips_last_ch is | |
724 | either '0' or '1' indicating whether to enter or | |
725 | leave MRI mode. */ | |
726 | do_scrub_begin (mri_last_ch == '1'); | |
727 | mri_state = NULL; | |
728 | ||
729 | /* We continue handling the character as usual. The | |
730 | main gas reader must also handle the .mri pseudo-op | |
731 | to control expression parsing and the like. */ | |
732 | } | |
733 | } | |
734 | #endif | |
735 | ||
736 | if (ch == EOF) | |
737 | { | |
738 | if (state != 0) | |
739 | { | |
740 | as_warn (_("end of file not at end of a line; newline inserted")); | |
741 | state = 0; | |
742 | PUT ('\n'); | |
743 | } | |
744 | goto fromeof; | |
745 | } | |
746 | ||
747 | switch (lex[ch]) | |
748 | { | |
749 | case LEX_IS_WHITESPACE: | |
750 | do | |
751 | { | |
752 | ch = GET (); | |
753 | } | |
754 | while (ch != EOF && IS_WHITESPACE (ch)); | |
755 | if (ch == EOF) | |
756 | goto fromeof; | |
757 | ||
758 | if (state == 0) | |
759 | { | |
760 | /* Preserve a single whitespace character at the | |
761 | beginning of a line. */ | |
762 | state = 1; | |
763 | UNGET (ch); | |
764 | PUT (' '); | |
765 | break; | |
766 | } | |
767 | ||
f28e8eb3 TW |
768 | #ifdef KEEP_WHITE_AROUND_COLON |
769 | if (lex[ch] == LEX_IS_COLON) | |
770 | { | |
771 | /* only keep this white if there's no white *after* the colon */ | |
772 | ch2 = GET (); | |
773 | UNGET (ch2); | |
774 | if (!IS_WHITESPACE (ch2)) | |
775 | { | |
776 | state = 9; | |
777 | UNGET (ch); | |
778 | PUT (' '); | |
779 | break; | |
780 | } | |
781 | } | |
782 | #endif | |
252b5132 RH |
783 | if (IS_COMMENT (ch) |
784 | || ch == '/' | |
785 | || IS_LINE_SEPARATOR (ch)) | |
786 | { | |
787 | if (scrub_m68k_mri) | |
788 | { | |
789 | /* In MRI mode, we keep these spaces. */ | |
790 | UNGET (ch); | |
791 | PUT (' '); | |
792 | break; | |
793 | } | |
794 | goto recycle; | |
795 | } | |
796 | ||
797 | /* If we're in state 2 or 11, we've seen a non-white | |
798 | character followed by whitespace. If the next character | |
799 | is ':', this is whitespace after a label name which we | |
800 | normally must ignore. In MRI mode, though, spaces are | |
801 | not permitted between the label and the colon. */ | |
802 | if ((state == 2 || state == 11) | |
803 | && lex[ch] == LEX_IS_COLON | |
804 | && ! scrub_m68k_mri) | |
805 | { | |
806 | state = 1; | |
807 | PUT (ch); | |
808 | break; | |
809 | } | |
810 | ||
811 | switch (state) | |
812 | { | |
813 | case 0: | |
814 | state++; | |
815 | goto recycle; /* Punted leading sp */ | |
816 | case 1: | |
817 | /* We can arrive here if we leave a leading whitespace | |
818 | character at the beginning of a line. */ | |
819 | goto recycle; | |
820 | case 2: | |
821 | state = 3; | |
822 | if (to + 1 < toend) | |
823 | { | |
824 | /* Optimize common case by skipping UNGET/GET. */ | |
825 | PUT (' '); /* Sp after opco */ | |
826 | goto recycle; | |
827 | } | |
828 | UNGET (ch); | |
829 | PUT (' '); | |
830 | break; | |
831 | case 3: | |
832 | if (scrub_m68k_mri) | |
833 | { | |
834 | /* In MRI mode, we keep these spaces. */ | |
835 | UNGET (ch); | |
836 | PUT (' '); | |
837 | break; | |
838 | } | |
839 | goto recycle; /* Sp in operands */ | |
840 | case 9: | |
841 | case 10: | |
842 | if (scrub_m68k_mri) | |
843 | { | |
844 | /* In MRI mode, we keep these spaces. */ | |
845 | state = 3; | |
846 | UNGET (ch); | |
847 | PUT (' '); | |
848 | break; | |
849 | } | |
850 | state = 10; /* Sp after symbol char */ | |
851 | goto recycle; | |
852 | case 11: | |
853 | if (flag_m68k_mri | |
854 | #ifdef LABELS_WITHOUT_COLONS | |
855 | || 1 | |
856 | #endif | |
857 | ) | |
858 | state = 1; | |
859 | else | |
860 | { | |
861 | /* We know that ch is not ':', since we tested that | |
862 | case above. Therefore this is not a label, so it | |
863 | must be the opcode, and we've just seen the | |
864 | whitespace after it. */ | |
865 | state = 3; | |
866 | } | |
867 | UNGET (ch); | |
868 | PUT (' '); /* Sp after label definition. */ | |
869 | break; | |
870 | default: | |
871 | BAD_CASE (state); | |
872 | } | |
873 | break; | |
874 | ||
875 | case LEX_IS_TWOCHAR_COMMENT_1ST: | |
876 | ch2 = GET (); | |
877 | if (ch2 == '*') | |
878 | { | |
879 | for (;;) | |
880 | { | |
881 | do | |
882 | { | |
883 | ch2 = GET (); | |
884 | if (ch2 != EOF && IS_NEWLINE (ch2)) | |
885 | add_newlines++; | |
886 | } | |
887 | while (ch2 != EOF && ch2 != '*'); | |
888 | ||
889 | while (ch2 == '*') | |
890 | ch2 = GET (); | |
891 | ||
892 | if (ch2 == EOF || ch2 == '/') | |
893 | break; | |
894 | ||
895 | /* This UNGET will ensure that we count newlines | |
896 | correctly. */ | |
897 | UNGET (ch2); | |
898 | } | |
899 | ||
900 | if (ch2 == EOF) | |
901 | as_warn (_("end of file in multiline comment")); | |
902 | ||
903 | ch = ' '; | |
904 | goto recycle; | |
905 | } | |
906 | else | |
907 | { | |
908 | if (ch2 != EOF) | |
909 | UNGET (ch2); | |
910 | if (state == 9 || state == 10) | |
911 | state = 3; | |
912 | PUT (ch); | |
913 | } | |
914 | break; | |
915 | ||
916 | case LEX_IS_STRINGQUOTE: | |
917 | if (state == 10) | |
918 | { | |
919 | /* Preserve the whitespace in foo "bar" */ | |
920 | UNGET (ch); | |
921 | state = 3; | |
922 | PUT (' '); | |
923 | ||
924 | /* PUT didn't jump out. We could just break, but we | |
925 | know what will happen, so optimize a bit. */ | |
926 | ch = GET (); | |
927 | old_state = 3; | |
928 | } | |
929 | else if (state == 9) | |
930 | old_state = 3; | |
931 | else | |
932 | old_state = state; | |
933 | state = 5; | |
934 | PUT (ch); | |
935 | break; | |
936 | ||
937 | #ifndef IEEE_STYLE | |
938 | case LEX_IS_ONECHAR_QUOTE: | |
939 | if (state == 10) | |
940 | { | |
941 | /* Preserve the whitespace in foo 'b' */ | |
942 | UNGET (ch); | |
943 | state = 3; | |
944 | PUT (' '); | |
945 | break; | |
946 | } | |
947 | ch = GET (); | |
948 | if (ch == EOF) | |
949 | { | |
950 | as_warn (_("end of file after a one-character quote; \\0 inserted")); | |
951 | ch = 0; | |
952 | } | |
953 | if (ch == '\\') | |
954 | { | |
955 | ch = GET (); | |
956 | if (ch == EOF) | |
957 | { | |
958 | as_warn (_("end of file in escape character")); | |
959 | ch = '\\'; | |
960 | } | |
961 | else | |
962 | ch = process_escape (ch); | |
963 | } | |
964 | sprintf (out_buf, "%d", (int) (unsigned char) ch); | |
965 | ||
966 | /* None of these 'x constants for us. We want 'x'. */ | |
967 | if ((ch = GET ()) != '\'') | |
968 | { | |
969 | #ifdef REQUIRE_CHAR_CLOSE_QUOTE | |
970 | as_warn (_("Missing close quote: (assumed)")); | |
971 | #else | |
972 | if (ch != EOF) | |
973 | UNGET (ch); | |
974 | #endif | |
975 | } | |
976 | if (strlen (out_buf) == 1) | |
977 | { | |
978 | PUT (out_buf[0]); | |
979 | break; | |
980 | } | |
981 | if (state == 9) | |
982 | old_state = 3; | |
983 | else | |
984 | old_state = state; | |
985 | state = -1; | |
986 | out_string = out_buf; | |
987 | PUT (*out_string++); | |
988 | break; | |
989 | #endif | |
990 | ||
991 | case LEX_IS_COLON: | |
f28e8eb3 TW |
992 | #ifdef KEEP_WHITE_AROUND_COLON |
993 | state = 9; | |
994 | #else | |
252b5132 RH |
995 | if (state == 9 || state == 10) |
996 | state = 3; | |
997 | else if (state != 3) | |
998 | state = 1; | |
f28e8eb3 | 999 | #endif |
252b5132 RH |
1000 | PUT (ch); |
1001 | break; | |
1002 | ||
1003 | case LEX_IS_NEWLINE: | |
1004 | /* Roll out a bunch of newlines from inside comments, etc. */ | |
1005 | if (add_newlines) | |
1006 | { | |
1007 | --add_newlines; | |
1008 | UNGET (ch); | |
1009 | } | |
1010 | /* fall thru into... */ | |
1011 | ||
1012 | case LEX_IS_LINE_SEPARATOR: | |
1013 | state = 0; | |
1014 | PUT (ch); | |
1015 | break; | |
1016 | ||
1017 | #ifdef TC_V850 | |
1018 | case LEX_IS_DOUBLEDASH_1ST: | |
1019 | ch2 = GET(); | |
1020 | if (ch2 != '-') | |
1021 | { | |
1022 | UNGET (ch2); | |
1023 | goto de_fault; | |
1024 | } | |
1025 | /* read and skip to end of line */ | |
1026 | do | |
1027 | { | |
1028 | ch = GET (); | |
1029 | } | |
1030 | while (ch != EOF && ch != '\n'); | |
1031 | if (ch == EOF) | |
1032 | { | |
1033 | as_warn (_("end of file in comment; newline inserted")); | |
1034 | } | |
1035 | state = 0; | |
1036 | PUT ('\n'); | |
1037 | break; | |
1038 | #endif | |
f28e8eb3 | 1039 | #ifdef DOUBLEBAR_PARALLEL |
252b5132 RH |
1040 | case LEX_IS_DOUBLEBAR_1ST: |
1041 | ch2 = GET(); | |
1042 | if (ch2 != '|') | |
1043 | { | |
1044 | UNGET (ch2); | |
1045 | goto de_fault; | |
1046 | } | |
1047 | /* Reset back to state 1 and pretend that we are parsing a line from | |
1048 | just after the first white space. */ | |
1049 | state = 1; | |
1050 | PUT ('|'); | |
1051 | PUT ('|'); | |
1052 | break; | |
1053 | #endif | |
1054 | case LEX_IS_LINE_COMMENT_START: | |
1055 | /* FIXME-someday: The two character comment stuff was badly | |
1056 | thought out. On i386, we want '/' as line comment start | |
1057 | AND we want C style comments. hence this hack. The | |
1058 | whole lexical process should be reworked. xoxorich. */ | |
1059 | if (ch == '/') | |
1060 | { | |
1061 | ch2 = GET (); | |
1062 | if (ch2 == '*') | |
1063 | { | |
1064 | old_state = 3; | |
1065 | state = -2; | |
1066 | break; | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | UNGET (ch2); | |
1071 | } | |
1072 | } /* bad hack */ | |
1073 | ||
1074 | if (state == 0 || state == 1) /* Only comment at start of line. */ | |
1075 | { | |
1076 | int startch; | |
1077 | ||
1078 | startch = ch; | |
1079 | ||
1080 | do | |
1081 | { | |
1082 | ch = GET (); | |
1083 | } | |
1084 | while (ch != EOF && IS_WHITESPACE (ch)); | |
1085 | if (ch == EOF) | |
1086 | { | |
1087 | as_warn (_("end of file in comment; newline inserted")); | |
1088 | PUT ('\n'); | |
1089 | break; | |
1090 | } | |
1091 | if (ch < '0' || ch > '9' || state != 0 || startch != '#') | |
1092 | { | |
1093 | /* Not a cpp line. */ | |
1094 | while (ch != EOF && !IS_NEWLINE (ch)) | |
1095 | ch = GET (); | |
1096 | if (ch == EOF) | |
1097 | as_warn (_("EOF in Comment: Newline inserted")); | |
1098 | state = 0; | |
1099 | PUT ('\n'); | |
1100 | break; | |
1101 | } | |
1102 | /* Loks like `# 123 "filename"' from cpp. */ | |
1103 | UNGET (ch); | |
1104 | old_state = 4; | |
1105 | state = -1; | |
1106 | if (scrub_m68k_mri) | |
1107 | out_string = "\tappline "; | |
1108 | else | |
1109 | out_string = "\t.appline "; | |
1110 | PUT (*out_string++); | |
1111 | break; | |
1112 | } | |
1113 | ||
1114 | #ifdef TC_D10V | |
1115 | /* All insns end in a char for which LEX_IS_SYMBOL_COMPONENT is true. | |
1116 | Trap is the only short insn that has a first operand that is | |
1117 | neither register nor label. | |
1118 | We must prevent exef0f ||trap #1 to degenerate to exef0f ||trap#1 . | |
1119 | We can't make '#' LEX_IS_SYMBOL_COMPONENT because it is already | |
1120 | LEX_IS_LINE_COMMENT_START. However, it is the only character in | |
1121 | line_comment_chars for d10v, hence we can recognize it as such. */ | |
1122 | /* An alternative approach would be to reset the state to 1 when | |
1123 | we see '||', '<'- or '->', but that seems to be overkill. */ | |
1124 | if (state == 10) PUT (' '); | |
1125 | #endif | |
1126 | /* We have a line comment character which is not at the | |
1127 | start of a line. If this is also a normal comment | |
1128 | character, fall through. Otherwise treat it as a default | |
1129 | character. */ | |
1130 | if (strchr (tc_comment_chars, ch) == NULL | |
1131 | && (! scrub_m68k_mri | |
1132 | || (ch != '!' && ch != '*'))) | |
1133 | goto de_fault; | |
1134 | if (scrub_m68k_mri | |
1135 | && (ch == '!' || ch == '*' || ch == '#') | |
1136 | && state != 1 | |
1137 | && state != 10) | |
1138 | goto de_fault; | |
1139 | /* Fall through. */ | |
1140 | case LEX_IS_COMMENT_START: | |
1141 | #if defined TC_ARM && defined OBJ_ELF | |
1142 | /* On the ARM, `@' is the comment character. | |
1143 | Unfortunately this is also a special character in ELF .symver | |
1144 | directives (and .type, though we deal with those another way). So | |
1145 | we check if this line is such a directive, and treat the character | |
1146 | as default if so. This is a hack. */ | |
1147 | if ((symver_state != NULL) && (*symver_state == 0)) | |
1148 | goto de_fault; | |
1149 | #endif | |
1150 | do | |
1151 | { | |
1152 | ch = GET (); | |
1153 | } | |
1154 | while (ch != EOF && !IS_NEWLINE (ch)); | |
1155 | if (ch == EOF) | |
1156 | as_warn (_("end of file in comment; newline inserted")); | |
1157 | state = 0; | |
1158 | PUT ('\n'); | |
1159 | break; | |
1160 | ||
1161 | case LEX_IS_SYMBOL_COMPONENT: | |
1162 | if (state == 10) | |
1163 | { | |
1164 | /* This is a symbol character following another symbol | |
1165 | character, with whitespace in between. We skipped | |
1166 | the whitespace earlier, so output it now. */ | |
1167 | UNGET (ch); | |
1168 | state = 3; | |
1169 | PUT (' '); | |
1170 | break; | |
1171 | } | |
1172 | ||
1173 | if (state == 3) | |
1174 | state = 9; | |
1175 | ||
1176 | /* This is a common case. Quickly copy CH and all the | |
1177 | following symbol component or normal characters. */ | |
1178 | if (to + 1 < toend | |
1179 | && mri_state == NULL | |
1180 | #if defined TC_ARM && defined OBJ_ELF | |
1181 | && symver_state == NULL | |
1182 | #endif | |
1183 | ) | |
1184 | { | |
1185 | char *s; | |
1186 | int len; | |
1187 | ||
1188 | for (s = from; s < fromend; s++) | |
1189 | { | |
1190 | int type; | |
1191 | ||
1192 | ch2 = * (unsigned char *) s; | |
1193 | type = lex[ch2]; | |
1194 | if (type != 0 | |
1195 | && type != LEX_IS_SYMBOL_COMPONENT) | |
1196 | break; | |
1197 | } | |
1198 | if (s > from) | |
1199 | { | |
1200 | /* Handle the last character normally, for | |
1201 | simplicity. */ | |
1202 | --s; | |
1203 | } | |
1204 | len = s - from; | |
1205 | if (len > (toend - to) - 1) | |
1206 | len = (toend - to) - 1; | |
1207 | if (len > 0) | |
1208 | { | |
1209 | PUT (ch); | |
1210 | if (len > 8) | |
1211 | { | |
1212 | memcpy (to, from, len); | |
1213 | to += len; | |
1214 | from += len; | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | switch (len) | |
1219 | { | |
1220 | case 8: *to++ = *from++; | |
1221 | case 7: *to++ = *from++; | |
1222 | case 6: *to++ = *from++; | |
1223 | case 5: *to++ = *from++; | |
1224 | case 4: *to++ = *from++; | |
1225 | case 3: *to++ = *from++; | |
1226 | case 2: *to++ = *from++; | |
1227 | case 1: *to++ = *from++; | |
1228 | } | |
1229 | } | |
1230 | ch = GET (); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | /* Fall through. */ | |
1235 | default: | |
1236 | de_fault: | |
1237 | /* Some relatively `normal' character. */ | |
1238 | if (state == 0) | |
1239 | { | |
1240 | state = 11; /* Now seeing label definition */ | |
1241 | } | |
1242 | else if (state == 1) | |
1243 | { | |
1244 | state = 2; /* Ditto */ | |
1245 | } | |
1246 | else if (state == 9) | |
1247 | { | |
1248 | if (lex[ch] != LEX_IS_SYMBOL_COMPONENT) | |
1249 | state = 3; | |
1250 | } | |
1251 | else if (state == 10) | |
1252 | { | |
c5c834aa AH |
1253 | if (ch == '\\') |
1254 | { | |
1255 | /* Special handling for backslash: a backslash may | |
1256 | be the beginning of a formal parameter (of a | |
1257 | macro) following another symbol character, with | |
1258 | whitespace in between. If that is the case, we | |
1259 | output a space before the parameter. Strictly | |
1260 | speaking, correct handling depends upon what the | |
1261 | macro parameter expands into; if the parameter | |
1262 | expands into something which does not start with | |
1263 | an operand character, then we don't want to keep | |
1264 | the space. We don't have enough information to | |
1265 | make the right choice, so here we are making the | |
1266 | choice which is more likely to be correct. */ | |
1267 | PUT (' '); | |
1268 | } | |
1269 | ||
252b5132 RH |
1270 | state = 3; |
1271 | } | |
1272 | PUT (ch); | |
1273 | break; | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | /*NOTREACHED*/ | |
1278 | ||
1279 | fromeof: | |
1280 | /* We have reached the end of the input. */ | |
1281 | return to - tostart; | |
1282 | ||
1283 | tofull: | |
1284 | /* The output buffer is full. Save any input we have not yet | |
1285 | processed. */ | |
1286 | if (fromend > from) | |
1287 | { | |
2b47531b | 1288 | saved_input = from; |
252b5132 RH |
1289 | saved_input_len = fromend - from; |
1290 | } | |
1291 | else | |
2b47531b ILT |
1292 | saved_input = NULL; |
1293 | ||
252b5132 RH |
1294 | return to - tostart; |
1295 | } | |
1296 | ||
1297 | /* end of app.c */ |