1 /* listing.c - maintain assembly listings
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2005, 2006
4 Free Software Foundation, Inc.
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 /* Contributed by Steve Chamberlain <sac@cygnus.com>
24
25 A listing page looks like:
26
27 LISTING_HEADER sourcefilename pagenumber
28 TITLE LINE
29 SUBTITLE LINE
30 linenumber address data source
31 linenumber address data source
32 linenumber address data source
33 linenumber address data source
34
35 If not overridden, the listing commands are:
36
37 .title "stuff"
38 Put "stuff" onto the title line
39 .sbttl "stuff"
40 Put stuff onto the subtitle line
41
42 If these commands come within 10 lines of the top of the page, they
43 will affect the page they are on, as well as any subsequent page
44
45 .eject
46 Thow a page
47 .list
48 Increment the enable listing counter
49 .nolist
50 Decrement the enable listing counter
51
52 .psize Y[,X]
53 Set the paper size to X wide and Y high. Setting a psize Y of
54 zero will suppress form feeds except where demanded by .eject
55
56 If the counter goes below zero, listing is suppressed.
57
58 Listings are a maintained by read calling various listing_<foo>
59 functions. What happens most is that the macro NO_LISTING is not
60 defined (from the Makefile), then the macro LISTING_NEWLINE expands
61 into a call to listing_newline. The call is done from read.c, every
62 time it sees a newline, and -l is on the command line.
63
64 The function listing_newline remembers the frag associated with the
65 newline, and creates a new frag - note that this is wasteful, but not
66 a big deal, since listing slows things down a lot anyway. The
67 function also remembers when the filename changes.
68
69 When all the input has finished, and gas has had a chance to settle
70 down, the listing is output. This is done by running down the list of
71 frag/source file records, and opening the files as needed and printing
72 out the bytes and chars associated with them.
73
74 The only things which the architecture can change about the listing
75 are defined in these macros:
76
77 LISTING_HEADER The name of the architecture
78 LISTING_WORD_SIZE The make of the number of bytes in a word, this determines
79 the clumping of the output data. eg a value of
80 2 makes words look like 1234 5678, whilst 1
81 would make the same value look like 12 34 56
82 78
83 LISTING_LHS_WIDTH Number of words of above size for the lhs
84
85 LISTING_LHS_WIDTH_SECOND Number of words for the data on the lhs
86 for the second line
87
88 LISTING_LHS_CONT_LINES Max number of lines to use up for a continuation
89 LISTING_RHS_WIDTH Number of chars from the input file to print
90 on a line. */
91
92 #include "as.h"
93 #include "obstack.h"
94 #include "safe-ctype.h"
95 #include "input-file.h"
96 #include "subsegs.h"
97
98 #ifndef NO_LISTING
99
100 #ifndef LISTING_HEADER
101 #define LISTING_HEADER "GAS LISTING"
102 #endif
103 #ifndef LISTING_WORD_SIZE
104 #define LISTING_WORD_SIZE 4
105 #endif
106 #ifndef LISTING_LHS_WIDTH
107 #define LISTING_LHS_WIDTH ((LISTING_WORD_SIZE) > 4 ? 1 : 4 / (LISTING_WORD_SIZE))
108 #endif
109 #ifndef LISTING_LHS_WIDTH_SECOND
110 #define LISTING_LHS_WIDTH_SECOND LISTING_LHS_WIDTH
111 #endif
112 #ifndef LISTING_RHS_WIDTH
113 #define LISTING_RHS_WIDTH 100
114 #endif
115 #ifndef LISTING_LHS_CONT_LINES
116 #define LISTING_LHS_CONT_LINES 4
117 #endif
118
119 /* This structure remembers which .s were used. */
120 typedef struct file_info_struct
121 {
122 struct file_info_struct * next;
123 char * filename;
124 long pos;
125 unsigned int linenum;
126 int at_end;
127 } file_info_type;
128
129 /* This structure remembers which line from which file goes into which
130 frag. */
131 struct list_info_struct
132 {
133 /* Frag which this line of source is nearest to. */
134 fragS *frag;
135
136 /* The actual line in the source file. */
137 unsigned int line;
138
139 /* Pointer to the file info struct for the file which this line
140 belongs to. */
141 file_info_type *file;
142
143 /* The expanded text of any macro that may have been executing. */
144 char *line_contents;
145
146 /* Next in list. */
147 struct list_info_struct *next;
148
149 /* Pointer to the file info struct for the high level language
150 source line that belongs here. */
151 file_info_type *hll_file;
152
153 /* High level language source line. */
154 unsigned int hll_line;
155
156 /* Pointer to any error message associated with this line. */
157 char *message;
158
159 enum
160 {
161 EDICT_NONE,
162 EDICT_SBTTL,
163 EDICT_TITLE,
164 EDICT_NOLIST,
165 EDICT_LIST,
166 EDICT_NOLIST_NEXT,
167 EDICT_EJECT
168 } edict;
169 char *edict_arg;
170
171 /* Nonzero if this line is to be omitted because it contains
172 debugging information. This can become a flags field if we come
173 up with more information to store here. */
174 int debugging;
175 };
176
177 typedef struct list_info_struct list_info_type;
178
179 int listing_lhs_width = LISTING_LHS_WIDTH;
180 int listing_lhs_width_second = LISTING_LHS_WIDTH_SECOND;
181 int listing_lhs_cont_lines = LISTING_LHS_CONT_LINES;
182 int listing_rhs_width = LISTING_RHS_WIDTH;
183
184 struct list_info_struct * listing_tail;
185
186 static file_info_type * file_info_head;
187 static file_info_type * last_open_file_info;
188 static FILE * last_open_file;
189 static struct list_info_struct * head;
190 static int paper_width = 200;
191 static int paper_height = 60;
192
193 extern int listing;
194
195 /* File to output listings to. */
196 static FILE *list_file;
197
198 /* This static array is used to keep the text of data to be printed
199 before the start of the line. */
200
201 #define MAX_BYTES \
202 (((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width \
203 + ((((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second) \
204 * listing_lhs_cont_lines) \
205 + 20)
206
207 static char *data_buffer;
208
209 /* Prototypes. */
210 static void listing_message (const char *, const char *);
211 static file_info_type *file_info (const char *);
212 static void new_frag (void);
213 static char *buffer_line (file_info_type *, char *, unsigned int);
214 static void listing_page (list_info_type *);
215 static unsigned int calc_hex (list_info_type *);
216 static void print_lines (list_info_type *, unsigned int, char *, unsigned int);
217 static void list_symbol_table (void);
218 static void print_source (file_info_type *, list_info_type *, char *, unsigned int);
219 static int debugging_pseudo (list_info_type *, const char *);
220 static void listing_listing (char *);
221
222 static void
listing_message(const char * name,const char * message)223 listing_message (const char *name, const char *message)
224 {
225 if (listing_tail != (list_info_type *) NULL)
226 {
227 unsigned int l = strlen (name) + strlen (message) + 1;
228 char *n = (char *) xmalloc (l);
229 strcpy (n, name);
230 strcat (n, message);
231 listing_tail->message = n;
232 }
233 }
234
235 void
listing_warning(const char * message)236 listing_warning (const char *message)
237 {
238 listing_message (_("Warning:"), message);
239 }
240
241 void
listing_error(const char * message)242 listing_error (const char *message)
243 {
244 listing_message (_("Error:"), message);
245 }
246
247 static file_info_type *
file_info(const char * file_name)248 file_info (const char *file_name)
249 {
250 /* Find an entry with this file name. */
251 file_info_type *p = file_info_head;
252
253 while (p != (file_info_type *) NULL)
254 {
255 if (strcmp (p->filename, file_name) == 0)
256 return p;
257 p = p->next;
258 }
259
260 /* Make new entry. */
261 p = xmalloc (sizeof (file_info_type));
262 p->next = file_info_head;
263 file_info_head = p;
264 p->filename = xstrdup (file_name);
265 p->pos = 0;
266 p->linenum = 0;
267 p->at_end = 0;
268
269 return p;
270 }
271
272 static void
new_frag(void)273 new_frag (void)
274 {
275 frag_wane (frag_now);
276 frag_new (0);
277 }
278
279 void
listing_newline(char * ps)280 listing_newline (char *ps)
281 {
282 char *file;
283 unsigned int line;
284 static unsigned int last_line = 0xffff;
285 static char *last_file = NULL;
286 list_info_type *new = NULL;
287
288 if (listing == 0)
289 return;
290
291 if (now_seg == absolute_section)
292 return;
293
294 #ifdef OBJ_ELF
295 /* In ELF, anything in a section beginning with .debug or .line is
296 considered to be debugging information. This includes the
297 statement which switches us into the debugging section, which we
298 can only set after we are already in the debugging section. */
299 if ((listing & LISTING_NODEBUG) != 0
300 && listing_tail != NULL
301 && ! listing_tail->debugging)
302 {
303 const char *segname;
304
305 segname = segment_name (now_seg);
306 if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
307 || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
308 listing_tail->debugging = 1;
309 }
310 #endif
311
312 as_where (&file, &line);
313 if (ps == NULL)
314 {
315 if (line == last_line
316 && !(last_file && file && strcmp (file, last_file)))
317 return;
318
319 new = (list_info_type *) xmalloc (sizeof (list_info_type));
320
321 /* Detect if we are reading from stdin by examining the file
322 name returned by as_where().
323
324 [FIXME: We rely upon the name in the strcmp below being the
325 same as the one used by input_scrub_new_file(), if that is
326 not true, then this code will fail].
327
328 If we are reading from stdin, then we need to save each input
329 line here (assuming of course that we actually have a line of
330 input to read), so that it can be displayed in the listing
331 that is produced at the end of the assembly. */
332 if (strcmp (file, _("{standard input}")) == 0
333 && input_line_pointer != NULL)
334 {
335 char *copy;
336 int len;
337 int seen_quote = 0;
338
339 for (copy = input_line_pointer - 1;
340 *copy && (seen_quote
341 || (! is_end_of_line [(unsigned char) *copy]));
342 copy++)
343 if (*copy == '"' && copy[-1] != '\\')
344 seen_quote = ! seen_quote;
345
346 len = (copy - input_line_pointer) + 2;
347
348 copy = xmalloc (len);
349
350 if (copy != NULL)
351 {
352 char *src = input_line_pointer - 1;
353 char *dest = copy;
354
355 while (--len)
356 {
357 unsigned char c = *src++;
358
359 /* Omit control characters in the listing. */
360 if (!ISCNTRL (c))
361 *dest++ = c;
362 }
363
364 *dest = 0;
365 }
366
367 new->line_contents = copy;
368 }
369 else
370 new->line_contents = NULL;
371 }
372 else
373 {
374 new = xmalloc (sizeof (list_info_type));
375 new->line_contents = ps;
376 }
377
378 last_line = line;
379 last_file = file;
380
381 new_frag ();
382
383 if (listing_tail)
384 listing_tail->next = new;
385 else
386 head = new;
387
388 listing_tail = new;
389
390 new->frag = frag_now;
391 new->line = line;
392 new->file = file_info (file);
393 new->next = (list_info_type *) NULL;
394 new->message = (char *) NULL;
395 new->edict = EDICT_NONE;
396 new->hll_file = (file_info_type *) NULL;
397 new->hll_line = 0;
398 new->debugging = 0;
399
400 new_frag ();
401
402 #ifdef OBJ_ELF
403 /* In ELF, anything in a section beginning with .debug or .line is
404 considered to be debugging information. */
405 if ((listing & LISTING_NODEBUG) != 0)
406 {
407 const char *segname;
408
409 segname = segment_name (now_seg);
410 if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
411 || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
412 new->debugging = 1;
413 }
414 #endif
415 }
416
417 /* Attach all current frags to the previous line instead of the
418 current line. This is called by the MIPS backend when it discovers
419 that it needs to add some NOP instructions; the added NOP
420 instructions should go with the instruction that has the delay, not
421 with the new instruction. */
422
423 void
listing_prev_line(void)424 listing_prev_line (void)
425 {
426 list_info_type *l;
427 fragS *f;
428
429 if (head == (list_info_type *) NULL
430 || head == listing_tail)
431 return;
432
433 new_frag ();
434
435 for (l = head; l->next != listing_tail; l = l->next)
436 ;
437
438 for (f = frchain_now->frch_root; f != (fragS *) NULL; f = f->fr_next)
439 if (f->line == listing_tail)
440 f->line = l;
441
442 listing_tail->frag = frag_now;
443 new_frag ();
444 }
445
446 /* This function returns the next source line from the file supplied,
447 truncated to size. It appends a fake line to the end of each input
448 file to make. */
449
450 static char *
buffer_line(file_info_type * file,char * line,unsigned int size)451 buffer_line (file_info_type *file, char *line, unsigned int size)
452 {
453 unsigned int count = 0;
454 int c;
455
456 char *p = line;
457
458 /* If we couldn't open the file, return an empty line. */
459 if (file->at_end)
460 return "";
461
462 /* Check the cache and see if we last used this file. */
463 if (!last_open_file_info || file != last_open_file_info)
464 {
465 if (last_open_file)
466 {
467 last_open_file_info->pos = ftell (last_open_file);
468 fclose (last_open_file);
469 }
470
471 last_open_file_info = file;
472 last_open_file = fopen (file->filename, FOPEN_RT);
473 if (last_open_file == NULL)
474 {
475 file->at_end = 1;
476 return "";
477 }
478
479 /* Seek to where we were last time this file was open. */
480 if (file->pos)
481 fseek (last_open_file, file->pos, SEEK_SET);
482 }
483
484 c = fgetc (last_open_file);
485
486 /* Leave room for null. */
487 size -= 1;
488
489 while (c != EOF && c != '\n')
490 {
491 if (count < size)
492 *p++ = c;
493 count++;
494
495 c = fgetc (last_open_file);
496
497 }
498 if (c == EOF)
499 {
500 file->at_end = 1;
501 if (count + 2 < size)
502 {
503 *p++ = '.';
504 *p++ = '.';
505 *p++ = '.';
506 }
507 }
508 file->linenum++;
509 *p++ = 0;
510 return line;
511 }
512
513 static const char *fn;
514
515 static unsigned int eject; /* Eject pending */
516 static unsigned int page; /* Current page number */
517 static char *title; /* Current title */
518 static char *subtitle; /* Current subtitle */
519 static unsigned int on_page; /* Number of lines printed on current page */
520
521 static void
listing_page(list_info_type * list)522 listing_page (list_info_type *list)
523 {
524 /* Grope around, see if we can see a title or subtitle edict coming up
525 soon. (we look down 10 lines of the page and see if it's there) */
526 if ((eject || (on_page >= (unsigned int) paper_height))
527 && paper_height != 0)
528 {
529 unsigned int c = 10;
530 int had_title = 0;
531 int had_subtitle = 0;
532
533 page++;
534
535 while (c != 0 && list)
536 {
537 if (list->edict == EDICT_SBTTL && !had_subtitle)
538 {
539 had_subtitle = 1;
540 subtitle = list->edict_arg;
541 }
542 if (list->edict == EDICT_TITLE && !had_title)
543 {
544 had_title = 1;
545 title = list->edict_arg;
546 }
547 list = list->next;
548 c--;
549 }
550
551 if (page > 1)
552 {
553 fprintf (list_file, "\f");
554 }
555
556 fprintf (list_file, "%s %s \t\t\tpage %d\n", LISTING_HEADER, fn, page);
557 fprintf (list_file, "%s\n", title);
558 fprintf (list_file, "%s\n", subtitle);
559 on_page = 3;
560 eject = 0;
561 }
562 }
563
564 static unsigned int
calc_hex(list_info_type * list)565 calc_hex (list_info_type *list)
566 {
567 int data_buffer_size;
568 list_info_type *first = list;
569 unsigned int address = ~(unsigned int) 0;
570 fragS *frag;
571 fragS *frag_ptr;
572 unsigned int octet_in_frag;
573
574 /* Find first frag which says it belongs to this line. */
575 frag = list->frag;
576 while (frag && frag->line != list)
577 frag = frag->fr_next;
578
579 frag_ptr = frag;
580
581 data_buffer_size = 0;
582
583 /* Dump all the frags which belong to this line. */
584 while (frag_ptr != (fragS *) NULL && frag_ptr->line == first)
585 {
586 /* Print as many bytes from the fixed part as is sensible. */
587 octet_in_frag = 0;
588 while ((offsetT) octet_in_frag < frag_ptr->fr_fix
589 && data_buffer_size < MAX_BYTES - 3)
590 {
591 if (address == ~(unsigned int) 0)
592 address = frag_ptr->fr_address / OCTETS_PER_BYTE;
593
594 sprintf (data_buffer + data_buffer_size,
595 "%02X",
596 (frag_ptr->fr_literal[octet_in_frag]) & 0xff);
597 data_buffer_size += 2;
598 octet_in_frag++;
599 }
600 if (frag_ptr->fr_type == rs_fill)
601 {
602 unsigned int var_rep_max = octet_in_frag;
603 unsigned int var_rep_idx = octet_in_frag;
604
605 /* Print as many bytes from the variable part as is sensible. */
606 while (((offsetT) octet_in_frag
607 < (frag_ptr->fr_fix + frag_ptr->fr_var * frag_ptr->fr_offset))
608 && data_buffer_size < MAX_BYTES - 3)
609 {
610 if (address == ~(unsigned int) 0)
611 address = frag_ptr->fr_address / OCTETS_PER_BYTE;
612
613 sprintf (data_buffer + data_buffer_size,
614 "%02X",
615 (frag_ptr->fr_literal[var_rep_idx]) & 0xff);
616 data_buffer_size += 2;
617
618 var_rep_idx++;
619 octet_in_frag++;
620
621 if ((offsetT) var_rep_idx >= frag_ptr->fr_fix + frag_ptr->fr_var)
622 var_rep_idx = var_rep_max;
623 }
624 }
625
626 frag_ptr = frag_ptr->fr_next;
627 }
628 data_buffer[data_buffer_size] = '\0';
629 return address;
630 }
631
632 static void
print_lines(list_info_type * list,unsigned int lineno,char * string,unsigned int address)633 print_lines (list_info_type *list, unsigned int lineno,
634 char *string, unsigned int address)
635 {
636 unsigned int idx;
637 unsigned int nchars;
638 unsigned int lines;
639 unsigned int octet_in_word = 0;
640 char *src = data_buffer;
641 int cur;
642
643 /* Print the stuff on the first line. */
644 listing_page (list);
645 nchars = (LISTING_WORD_SIZE * 2 + 1) * listing_lhs_width;
646
647 /* Print the hex for the first line. */
648 if (address == ~(unsigned int) 0)
649 {
650 fprintf (list_file, "% 4d ", lineno);
651 for (idx = 0; idx < nchars; idx++)
652 fprintf (list_file, " ");
653
654 fprintf (list_file, "\t%s\n", string ? string : "");
655
656 on_page++;
657
658 listing_page (0);
659
660 return;
661 }
662
663 if (had_errors ())
664 fprintf (list_file, "% 4d ???? ", lineno);
665 else
666 fprintf (list_file, "% 4d %04x ", lineno, address);
667
668 /* And the data to go along with it. */
669 idx = 0;
670 cur = 0;
671 while (src[cur] && idx < nchars)
672 {
673 int offset;
674 offset = cur;
675 fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
676 cur += 2;
677 octet_in_word++;
678
679 if (octet_in_word == LISTING_WORD_SIZE)
680 {
681 fprintf (list_file, " ");
682 idx++;
683 octet_in_word = 0;
684 }
685
686 idx += 2;
687 }
688
689 for (; idx < nchars; idx++)
690 fprintf (list_file, " ");
691
692 fprintf (list_file, "\t%s\n", string ? string : "");
693 on_page++;
694 listing_page (list);
695
696 if (list->message)
697 {
698 fprintf (list_file, "**** %s\n", list->message);
699 listing_page (list);
700 on_page++;
701 }
702
703 for (lines = 0;
704 lines < (unsigned int) listing_lhs_cont_lines
705 && src[cur];
706 lines++)
707 {
708 nchars = ((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second - 1;
709 idx = 0;
710
711 /* Print any more lines of data, but more compactly. */
712 fprintf (list_file, "% 4d ", lineno);
713
714 while (src[cur] && idx < nchars)
715 {
716 int offset;
717 offset = cur;
718 fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
719 cur += 2;
720 idx += 2;
721 octet_in_word++;
722
723 if (octet_in_word == LISTING_WORD_SIZE)
724 {
725 fprintf (list_file, " ");
726 idx++;
727 octet_in_word = 0;
728 }
729 }
730
731 fprintf (list_file, "\n");
732 on_page++;
733 listing_page (list);
734 }
735 }
736
737 static void
list_symbol_table(void)738 list_symbol_table (void)
739 {
740 extern symbolS *symbol_rootP;
741 int got_some = 0;
742
743 symbolS *ptr;
744 eject = 1;
745 listing_page (0);
746
747 for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
748 {
749 if (SEG_NORMAL (S_GET_SEGMENT (ptr))
750 || S_GET_SEGMENT (ptr) == absolute_section)
751 {
752 /* Don't report section symbols. They are not interesting. */
753 if (symbol_section_p (ptr))
754 continue;
755
756 if (S_GET_NAME (ptr))
757 {
758 char buf[30], fmt[8];
759 valueT val = S_GET_VALUE (ptr);
760
761 /* @@ Note that this is dependent on the compilation options,
762 not solely on the target characteristics. */
763 if (sizeof (val) == 4 && sizeof (int) == 4)
764 sprintf (buf, "%08lx", (unsigned long) val);
765 else if (sizeof (val) <= sizeof (unsigned long))
766 {
767 sprintf (fmt, "%%0%lulx",
768 (unsigned long) (sizeof (val) * 2));
769 sprintf (buf, fmt, (unsigned long) val);
770 }
771 #if defined (BFD64)
772 else if (sizeof (val) > 4)
773 sprintf_vma (buf, val);
774 #endif
775 else
776 abort ();
777
778 if (!got_some)
779 {
780 fprintf (list_file, "DEFINED SYMBOLS\n");
781 on_page++;
782 got_some = 1;
783 }
784
785 if (symbol_get_frag (ptr) && symbol_get_frag (ptr)->line)
786 {
787 fprintf (list_file, "%20s:%-5d %s:%s %s\n",
788 symbol_get_frag (ptr)->line->file->filename,
789 symbol_get_frag (ptr)->line->line,
790 segment_name (S_GET_SEGMENT (ptr)),
791 buf, S_GET_NAME (ptr));
792 }
793 else
794 {
795 fprintf (list_file, "%33s:%s %s\n",
796 segment_name (S_GET_SEGMENT (ptr)),
797 buf, S_GET_NAME (ptr));
798 }
799
800 on_page++;
801 listing_page (0);
802 }
803 }
804
805 }
806 if (!got_some)
807 {
808 fprintf (list_file, "NO DEFINED SYMBOLS\n");
809 on_page++;
810 }
811 fprintf (list_file, "\n");
812 on_page++;
813 listing_page (0);
814
815 got_some = 0;
816
817 for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
818 {
819 if (S_GET_NAME (ptr) && strlen (S_GET_NAME (ptr)) != 0)
820 {
821 if (S_GET_SEGMENT (ptr) == undefined_section)
822 {
823 if (!got_some)
824 {
825 got_some = 1;
826 fprintf (list_file, "UNDEFINED SYMBOLS\n");
827 on_page++;
828 listing_page (0);
829 }
830 fprintf (list_file, "%s\n", S_GET_NAME (ptr));
831 on_page++;
832 listing_page (0);
833 }
834 }
835 }
836 if (!got_some)
837 {
838 fprintf (list_file, "NO UNDEFINED SYMBOLS\n");
839 on_page++;
840 listing_page (0);
841 }
842 }
843
844 static void
print_source(file_info_type * current_file,list_info_type * list,char * buffer,unsigned int width)845 print_source (file_info_type *current_file, list_info_type *list,
846 char *buffer, unsigned int width)
847 {
848 if (!current_file->at_end)
849 {
850 while (current_file->linenum < list->hll_line
851 && !current_file->at_end)
852 {
853 char *p = buffer_line (current_file, buffer, width);
854
855 fprintf (list_file, "%4u:%-13s **** %s\n", current_file->linenum,
856 current_file->filename, p);
857 on_page++;
858 listing_page (list);
859 }
860 }
861 }
862
863 /* Sometimes the user doesn't want to be bothered by the debugging
864 records inserted by the compiler, see if the line is suspicious. */
865
866 static int
debugging_pseudo(list_info_type * list,const char * line)867 debugging_pseudo (list_info_type *list, const char *line)
868 {
869 static int in_debug;
870 int was_debug;
871
872 if (list->debugging)
873 {
874 in_debug = 1;
875 return 1;
876 }
877
878 was_debug = in_debug;
879 in_debug = 0;
880
881 while (ISSPACE (*line))
882 line++;
883
884 if (*line != '.')
885 {
886 #ifdef OBJ_ELF
887 /* The ELF compiler sometimes emits blank lines after switching
888 out of a debugging section. If the next line drops us back
889 into debugging information, then don't print the blank line.
890 This is a hack for a particular compiler behaviour, not a
891 general case. */
892 if (was_debug
893 && *line == '\0'
894 && list->next != NULL
895 && list->next->debugging)
896 {
897 in_debug = 1;
898 return 1;
899 }
900 #endif
901
902 return 0;
903 }
904
905 line++;
906
907 if (strncmp (line, "def", 3) == 0)
908 return 1;
909 if (strncmp (line, "val", 3) == 0)
910 return 1;
911 if (strncmp (line, "scl", 3) == 0)
912 return 1;
913 if (strncmp (line, "line", 4) == 0)
914 return 1;
915 if (strncmp (line, "endef", 5) == 0)
916 return 1;
917 if (strncmp (line, "ln", 2) == 0)
918 return 1;
919 if (strncmp (line, "type", 4) == 0)
920 return 1;
921 if (strncmp (line, "size", 4) == 0)
922 return 1;
923 if (strncmp (line, "dim", 3) == 0)
924 return 1;
925 if (strncmp (line, "tag", 3) == 0)
926 return 1;
927 if (strncmp (line, "stabs", 5) == 0)
928 return 1;
929 if (strncmp (line, "stabn", 5) == 0)
930 return 1;
931
932 return 0;
933 }
934
935 static void
listing_listing(char * name ATTRIBUTE_UNUSED)936 listing_listing (char *name ATTRIBUTE_UNUSED)
937 {
938 list_info_type *list = head;
939 file_info_type *current_hll_file = (file_info_type *) NULL;
940 char *message;
941 char *buffer;
942 char *p;
943 int show_listing = 1;
944 unsigned int width;
945
946 buffer = xmalloc (listing_rhs_width);
947 data_buffer = xmalloc (MAX_BYTES);
948 eject = 1;
949 list = head->next;
950
951 while (list)
952 {
953 unsigned int list_line;
954
955 width = listing_rhs_width > paper_width ? paper_width :
956 listing_rhs_width;
957
958 list_line = list->line;
959 switch (list->edict)
960 {
961 case EDICT_LIST:
962 /* Skip all lines up to the current. */
963 list_line--;
964 break;
965 case EDICT_NOLIST:
966 show_listing--;
967 break;
968 case EDICT_NOLIST_NEXT:
969 if (show_listing == 0)
970 list_line--;
971 break;
972 case EDICT_EJECT:
973 break;
974 case EDICT_NONE:
975 break;
976 case EDICT_TITLE:
977 title = list->edict_arg;
978 break;
979 case EDICT_SBTTL:
980 subtitle = list->edict_arg;
981 break;
982 default:
983 abort ();
984 }
985
986 if (show_listing <= 0)
987 {
988 while (list->file->linenum < list_line
989 && !list->file->at_end)
990 p = buffer_line (list->file, buffer, width);
991 }
992
993 if (list->edict == EDICT_LIST
994 || (list->edict == EDICT_NOLIST_NEXT && show_listing == 0))
995 {
996 /* Enable listing for the single line that caused the enable. */
997 list_line++;
998 show_listing++;
999 }
1000
1001 if (show_listing > 0)
1002 {
1003 /* Scan down the list and print all the stuff which can be done
1004 with this line (or lines). */
1005 message = 0;
1006
1007 if (list->hll_file)
1008 current_hll_file = list->hll_file;
1009
1010 if (current_hll_file && list->hll_line && (listing & LISTING_HLL))
1011 print_source (current_hll_file, list, buffer, width);
1012
1013 if (list->line_contents)
1014 {
1015 if (!((listing & LISTING_NODEBUG)
1016 && debugging_pseudo (list, list->line_contents)))
1017 print_lines (list,
1018 list->file->linenum == 0 ? list->line : list->file->linenum,
1019 list->line_contents, calc_hex (list));
1020
1021 free (list->line_contents);
1022 list->line_contents = NULL;
1023 }
1024 else
1025 {
1026 while (list->file->linenum < list_line
1027 && !list->file->at_end)
1028 {
1029 unsigned int address;
1030
1031 p = buffer_line (list->file, buffer, width);
1032
1033 if (list->file->linenum < list_line)
1034 address = ~(unsigned int) 0;
1035 else
1036 address = calc_hex (list);
1037
1038 if (!((listing & LISTING_NODEBUG)
1039 && debugging_pseudo (list, p)))
1040 print_lines (list, list->file->linenum, p, address);
1041 }
1042 }
1043
1044 if (list->edict == EDICT_EJECT)
1045 eject = 1;
1046 }
1047
1048 if (list->edict == EDICT_NOLIST_NEXT && show_listing == 1)
1049 --show_listing;
1050
1051 list = list->next;
1052 }
1053
1054 free (buffer);
1055 free (data_buffer);
1056 data_buffer = NULL;
1057 }
1058
1059 void
listing_print(char * name)1060 listing_print (char *name)
1061 {
1062 int using_stdout;
1063
1064 title = "";
1065 subtitle = "";
1066
1067 if (name == NULL)
1068 {
1069 list_file = stdout;
1070 using_stdout = 1;
1071 }
1072 else
1073 {
1074 list_file = fopen (name, FOPEN_WT);
1075 if (list_file != NULL)
1076 using_stdout = 0;
1077 else
1078 {
1079 as_warn (_("can't open %s: %s"), name, xstrerror (errno));
1080 list_file = stdout;
1081 using_stdout = 1;
1082 }
1083 }
1084
1085 if (listing & LISTING_NOFORM)
1086 paper_height = 0;
1087
1088 if (listing & LISTING_LISTING)
1089 listing_listing (name);
1090
1091 if (listing & LISTING_SYMBOLS)
1092 list_symbol_table ();
1093
1094 if (! using_stdout)
1095 {
1096 if (fclose (list_file) == EOF)
1097 as_warn (_("can't close %s: %s"), name, xstrerror (errno));
1098 }
1099
1100 if (last_open_file)
1101 fclose (last_open_file);
1102 }
1103
1104 void
listing_file(const char * name)1105 listing_file (const char *name)
1106 {
1107 fn = name;
1108 }
1109
1110 void
listing_eject(int ignore ATTRIBUTE_UNUSED)1111 listing_eject (int ignore ATTRIBUTE_UNUSED)
1112 {
1113 if (listing)
1114 listing_tail->edict = EDICT_EJECT;
1115 }
1116
1117 void
listing_flags(int ignore ATTRIBUTE_UNUSED)1118 listing_flags (int ignore ATTRIBUTE_UNUSED)
1119 {
1120 while ((*input_line_pointer++) && (*input_line_pointer != '\n'))
1121 input_line_pointer++;
1122
1123 }
1124
1125 /* Turn listing on or off. An argument of 0 means to turn off
1126 listing. An argument of 1 means to turn on listing. An argument
1127 of 2 means to turn off listing, but as of the next line; that is,
1128 the current line should be listed, but the next line should not. */
1129
1130 void
listing_list(int on)1131 listing_list (int on)
1132 {
1133 if (listing)
1134 {
1135 switch (on)
1136 {
1137 case 0:
1138 if (listing_tail->edict == EDICT_LIST)
1139 listing_tail->edict = EDICT_NONE;
1140 else
1141 listing_tail->edict = EDICT_NOLIST;
1142 break;
1143 case 1:
1144 if (listing_tail->edict == EDICT_NOLIST
1145 || listing_tail->edict == EDICT_NOLIST_NEXT)
1146 listing_tail->edict = EDICT_NONE;
1147 else
1148 listing_tail->edict = EDICT_LIST;
1149 break;
1150 case 2:
1151 listing_tail->edict = EDICT_NOLIST_NEXT;
1152 break;
1153 default:
1154 abort ();
1155 }
1156 }
1157 }
1158
1159 void
listing_psize(int width_only)1160 listing_psize (int width_only)
1161 {
1162 if (! width_only)
1163 {
1164 paper_height = get_absolute_expression ();
1165
1166 if (paper_height < 0 || paper_height > 1000)
1167 {
1168 paper_height = 0;
1169 as_warn (_("strange paper height, set to no form"));
1170 }
1171
1172 if (*input_line_pointer != ',')
1173 {
1174 demand_empty_rest_of_line ();
1175 return;
1176 }
1177
1178 ++input_line_pointer;
1179 }
1180
1181 paper_width = get_absolute_expression ();
1182
1183 demand_empty_rest_of_line ();
1184 }
1185
1186 void
listing_nopage(int ignore ATTRIBUTE_UNUSED)1187 listing_nopage (int ignore ATTRIBUTE_UNUSED)
1188 {
1189 paper_height = 0;
1190 }
1191
1192 void
listing_title(int depth)1193 listing_title (int depth)
1194 {
1195 int quoted;
1196 char *start;
1197 char *ttl;
1198 unsigned int length;
1199
1200 SKIP_WHITESPACE ();
1201 if (*input_line_pointer != '\"')
1202 quoted = 0;
1203 else
1204 {
1205 quoted = 1;
1206 ++input_line_pointer;
1207 }
1208
1209 start = input_line_pointer;
1210
1211 while (*input_line_pointer)
1212 {
1213 if (quoted
1214 ? *input_line_pointer == '\"'
1215 : is_end_of_line[(unsigned char) *input_line_pointer])
1216 {
1217 if (listing)
1218 {
1219 length = input_line_pointer - start;
1220 ttl = xmalloc (length + 1);
1221 memcpy (ttl, start, length);
1222 ttl[length] = 0;
1223 listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE;
1224 listing_tail->edict_arg = ttl;
1225 }
1226 if (quoted)
1227 input_line_pointer++;
1228 demand_empty_rest_of_line ();
1229 return;
1230 }
1231 else if (*input_line_pointer == '\n')
1232 {
1233 as_bad (_("new line in title"));
1234 demand_empty_rest_of_line ();
1235 return;
1236 }
1237 else
1238 {
1239 input_line_pointer++;
1240 }
1241 }
1242 }
1243
1244 void
listing_source_line(unsigned int line)1245 listing_source_line (unsigned int line)
1246 {
1247 if (listing)
1248 {
1249 new_frag ();
1250 listing_tail->hll_line = line;
1251 new_frag ();
1252 }
1253 }
1254
1255 void
listing_source_file(const char * file)1256 listing_source_file (const char *file)
1257 {
1258 if (listing)
1259 listing_tail->hll_file = file_info (file);
1260 }
1261
1262 #else
1263
1264 /* Dummy functions for when compiled without listing enabled. */
1265
1266 void
listing_flags(int ignore)1267 listing_flags (int ignore)
1268 {
1269 s_ignore (0);
1270 }
1271
1272 void
listing_list(int on)1273 listing_list (int on)
1274 {
1275 s_ignore (0);
1276 }
1277
1278 void
listing_eject(int ignore)1279 listing_eject (int ignore)
1280 {
1281 s_ignore (0);
1282 }
1283
1284 void
listing_psize(int ignore)1285 listing_psize (int ignore)
1286 {
1287 s_ignore (0);
1288 }
1289
1290 void
listing_nopage(int ignore)1291 listing_nopage (int ignore)
1292 {
1293 s_ignore (0);
1294 }
1295
1296 void
listing_title(int depth)1297 listing_title (int depth)
1298 {
1299 s_ignore (0);
1300 }
1301
1302 void
listing_file(const char * name)1303 listing_file (const char *name)
1304 {
1305 }
1306
1307 void
listing_newline(char * name)1308 listing_newline (char *name)
1309 {
1310 }
1311
1312 void
listing_source_line(unsigned int n)1313 listing_source_line (unsigned int n)
1314 {
1315 }
1316
1317 void
listing_source_file(const char * n)1318 listing_source_file (const char *n)
1319 {
1320 }
1321
1322 #endif
1323