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[binutils.git] / gas / listing.c
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1 /* listing.c - maintain assembly listings
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
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 3, or (at your option)
11 any later version.
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.
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. */
23 /* Contributed by Steve Chamberlain <sac@cygnus.com>
25 A listing page looks like:
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
35 If not overridden, the listing commands are:
37 .title "stuff"
38 Put "stuff" onto the title line
39 .sbttl "stuff"
40 Put stuff onto the subtitle line
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
45 .eject
46 Thow a page
47 .list
48 Increment the enable listing counter
49 .nolist
50 Decrement the enable listing counter
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
56 If the counter goes below zero, listing is suppressed.
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.
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.
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.
74 The only things which the architecture can change about the listing
75 are defined in these macros:
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
83 LISTING_LHS_WIDTH Number of words of above size for the lhs
85 LISTING_LHS_WIDTH_SECOND Number of words for the data on the lhs
86 for the second line
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. */
92 #include "as.h"
93 #include "obstack.h"
94 #include "safe-ctype.h"
95 #include "input-file.h"
96 #include "subsegs.h"
97 #include "bfdver.h"
98 #include <time.h>
99 #include <stdarg.h>
101 #ifndef NO_LISTING
103 #ifndef LISTING_HEADER
104 #define LISTING_HEADER "GAS LISTING"
105 #endif
106 #ifndef LISTING_WORD_SIZE
107 #define LISTING_WORD_SIZE 4
108 #endif
109 #ifndef LISTING_LHS_WIDTH
110 #define LISTING_LHS_WIDTH ((LISTING_WORD_SIZE) > 4 ? 1 : 4 / (LISTING_WORD_SIZE))
111 #endif
112 #ifndef LISTING_LHS_WIDTH_SECOND
113 #define LISTING_LHS_WIDTH_SECOND LISTING_LHS_WIDTH
114 #endif
115 #ifndef LISTING_RHS_WIDTH
116 #define LISTING_RHS_WIDTH 100
117 #endif
118 #ifndef LISTING_LHS_CONT_LINES
119 #define LISTING_LHS_CONT_LINES 4
120 #endif
121 #define MAX_DATELEN 30
123 /* This structure remembers which .s were used. */
124 typedef struct file_info_struct
126 struct file_info_struct * next;
127 char * filename;
128 long pos;
129 unsigned int linenum;
130 int at_end;
131 } file_info_type;
133 enum edict_enum
135 EDICT_NONE,
136 EDICT_SBTTL,
137 EDICT_TITLE,
138 EDICT_NOLIST,
139 EDICT_LIST,
140 EDICT_NOLIST_NEXT,
141 EDICT_EJECT
145 /* This structure remembers which line from which file goes into which
146 frag. */
147 struct list_info_struct
149 /* Frag which this line of source is nearest to. */
150 fragS *frag;
152 /* The actual line in the source file. */
153 unsigned int line;
155 /* Pointer to the file info struct for the file which this line
156 belongs to. */
157 file_info_type *file;
159 /* The expanded text of any macro that may have been executing. */
160 char *line_contents;
162 /* Next in list. */
163 struct list_info_struct *next;
165 /* Pointer to the file info struct for the high level language
166 source line that belongs here. */
167 file_info_type *hll_file;
169 /* High level language source line. */
170 unsigned int hll_line;
172 /* Pointer to any error message associated with this line. */
173 char *message;
175 enum edict_enum edict;
176 char *edict_arg;
178 /* Nonzero if this line is to be omitted because it contains
179 debugging information. This can become a flags field if we come
180 up with more information to store here. */
181 int debugging;
184 typedef struct list_info_struct list_info_type;
186 int listing_lhs_width = LISTING_LHS_WIDTH;
187 int listing_lhs_width_second = LISTING_LHS_WIDTH_SECOND;
188 int listing_lhs_cont_lines = LISTING_LHS_CONT_LINES;
189 int listing_rhs_width = LISTING_RHS_WIDTH;
191 struct list_info_struct * listing_tail;
193 static file_info_type * file_info_head;
194 static file_info_type * last_open_file_info;
195 static FILE * last_open_file;
196 static struct list_info_struct * head;
197 static int paper_width = 200;
198 static int paper_height = 60;
200 extern int listing;
202 /* File to output listings to. */
203 static FILE *list_file;
205 /* This static array is used to keep the text of data to be printed
206 before the start of the line. */
208 #define MAX_BYTES \
209 (((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width \
210 + ((((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second) \
211 * listing_lhs_cont_lines) \
212 + 20)
214 static char *data_buffer;
216 /* Prototypes. */
217 static void listing_message (const char *, const char *);
218 static file_info_type *file_info (const char *);
219 static void new_frag (void);
220 static void listing_page (list_info_type *);
221 static unsigned int calc_hex (list_info_type *);
222 static void print_lines (list_info_type *, unsigned int, char *, unsigned int);
223 static void list_symbol_table (void);
224 static int debugging_pseudo (list_info_type *, const char *);
225 static void listing_listing (char *);
227 static void
228 listing_message (const char *name, const char *message)
230 if (listing_tail != (list_info_type *) NULL)
232 unsigned int l = strlen (name) + strlen (message) + 1;
233 char *n = (char *) xmalloc (l);
234 strcpy (n, name);
235 strcat (n, message);
236 listing_tail->message = n;
240 void
241 listing_warning (const char *message)
243 listing_message (_("Warning:"), message);
246 void
247 listing_error (const char *message)
249 listing_message (_("Error:"), message);
252 static file_info_type *
253 file_info (const char *file_name)
255 /* Find an entry with this file name. */
256 file_info_type *p = file_info_head;
258 while (p != (file_info_type *) NULL)
260 if (strcmp (p->filename, file_name) == 0)
261 return p;
262 p = p->next;
265 /* Make new entry. */
266 p = (file_info_type *) xmalloc (sizeof (file_info_type));
267 p->next = file_info_head;
268 file_info_head = p;
269 p->filename = xstrdup (file_name);
270 p->pos = 0;
271 p->linenum = 0;
272 p->at_end = 0;
274 return p;
277 static void
278 new_frag (void)
280 frag_wane (frag_now);
281 frag_new (0);
284 void
285 listing_newline (char *ps)
287 char *file;
288 unsigned int line;
289 static unsigned int last_line = 0xffff;
290 static char *last_file = NULL;
291 list_info_type *new_i = NULL;
293 if (listing == 0)
294 return;
296 if (now_seg == absolute_section)
297 return;
299 #ifdef OBJ_ELF
300 /* In ELF, anything in a section beginning with .debug or .line is
301 considered to be debugging information. This includes the
302 statement which switches us into the debugging section, which we
303 can only set after we are already in the debugging section. */
304 if ((listing & LISTING_NODEBUG) != 0
305 && listing_tail != NULL
306 && ! listing_tail->debugging)
308 const char *segname;
310 segname = segment_name (now_seg);
311 if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
312 || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
313 listing_tail->debugging = 1;
315 #endif
317 as_where (&file, &line);
318 if (ps == NULL)
320 if (line == last_line
321 && !(last_file && file && strcmp (file, last_file)))
322 return;
324 new_i = (list_info_type *) xmalloc (sizeof (list_info_type));
326 /* Detect if we are reading from stdin by examining the file
327 name returned by as_where().
329 [FIXME: We rely upon the name in the strcmp below being the
330 same as the one used by input_scrub_new_file(), if that is
331 not true, then this code will fail].
333 If we are reading from stdin, then we need to save each input
334 line here (assuming of course that we actually have a line of
335 input to read), so that it can be displayed in the listing
336 that is produced at the end of the assembly. */
337 if (strcmp (file, _("{standard input}")) == 0
338 && input_line_pointer != NULL)
340 char *copy;
341 int len;
342 int seen_quote = 0;
343 int seen_slash = 0;
345 for (copy = input_line_pointer;
346 *copy && (seen_quote
347 || is_end_of_line [(unsigned char) *copy] != 1);
348 copy++)
350 if (seen_slash)
351 seen_slash = 0;
352 else if (*copy == '\\')
353 seen_slash = 1;
354 else if (*copy == '"')
355 seen_quote = !seen_quote;
358 len = copy - input_line_pointer + 1;
360 copy = (char *) xmalloc (len);
362 if (copy != NULL)
364 char *src = input_line_pointer;
365 char *dest = copy;
367 while (--len)
369 unsigned char c = *src++;
371 /* Omit control characters in the listing. */
372 if (!ISCNTRL (c))
373 *dest++ = c;
376 *dest = 0;
379 new_i->line_contents = copy;
381 else
382 new_i->line_contents = NULL;
384 else
386 new_i = (list_info_type *) xmalloc (sizeof (list_info_type));
387 new_i->line_contents = ps;
390 last_line = line;
391 last_file = file;
393 new_frag ();
395 if (listing_tail)
396 listing_tail->next = new_i;
397 else
398 head = new_i;
400 listing_tail = new_i;
402 new_i->frag = frag_now;
403 new_i->line = line;
404 new_i->file = file_info (file);
405 new_i->next = (list_info_type *) NULL;
406 new_i->message = (char *) NULL;
407 new_i->edict = EDICT_NONE;
408 new_i->hll_file = (file_info_type *) NULL;
409 new_i->hll_line = 0;
410 new_i->debugging = 0;
412 new_frag ();
414 #ifdef OBJ_ELF
415 /* In ELF, anything in a section beginning with .debug or .line is
416 considered to be debugging information. */
417 if ((listing & LISTING_NODEBUG) != 0)
419 const char *segname;
421 segname = segment_name (now_seg);
422 if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
423 || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
424 new_i->debugging = 1;
426 #endif
429 /* Attach all current frags to the previous line instead of the
430 current line. This is called by the MIPS backend when it discovers
431 that it needs to add some NOP instructions; the added NOP
432 instructions should go with the instruction that has the delay, not
433 with the new instruction. */
435 void
436 listing_prev_line (void)
438 list_info_type *l;
439 fragS *f;
441 if (head == (list_info_type *) NULL
442 || head == listing_tail)
443 return;
445 new_frag ();
447 for (l = head; l->next != listing_tail; l = l->next)
450 for (f = frchain_now->frch_root; f != (fragS *) NULL; f = f->fr_next)
451 if (f->line == listing_tail)
452 f->line = l;
454 listing_tail->frag = frag_now;
455 new_frag ();
458 /* This function returns the next source line from the file supplied,
459 truncated to size. It appends a fake line to the end of each input
460 file to make using the returned buffer simpler. */
462 static char *
463 buffer_line (file_info_type *file, char *line, unsigned int size)
465 unsigned int count = 0;
466 int c;
467 char *p = line;
469 /* If we couldn't open the file, return an empty line. */
470 if (file->at_end)
471 return "";
473 /* Check the cache and see if we last used this file. */
474 if (!last_open_file_info || file != last_open_file_info)
476 if (last_open_file)
478 last_open_file_info->pos = ftell (last_open_file);
479 fclose (last_open_file);
482 /* Open the file in the binary mode so that ftell above can
483 return a reliable value that we can feed to fseek below. */
484 last_open_file_info = file;
485 last_open_file = fopen (file->filename, FOPEN_RB);
486 if (last_open_file == NULL)
488 file->at_end = 1;
489 return "";
492 /* Seek to where we were last time this file was open. */
493 if (file->pos)
494 fseek (last_open_file, file->pos, SEEK_SET);
497 /* Leave room for null. */
498 size -= 1;
500 c = fgetc (last_open_file);
502 while (c != EOF && c != '\n' && c != '\r')
504 if (count < size)
505 *p++ = c;
506 count++;
508 c = fgetc (last_open_file);
511 /* If '\r' is followed by '\n', swallow that. Likewise, if '\n'
512 is followed by '\r', swallow that as well. */
513 if (c == '\r' || c == '\n')
515 int next = fgetc (last_open_file);
517 if ((c == '\r' && next != '\n')
518 || (c == '\n' && next != '\r'))
519 ungetc (next, last_open_file);
522 if (c == EOF)
524 file->at_end = 1;
525 if (count + 2 < size)
527 *p++ = '.';
528 *p++ = '.';
529 *p++ = '.';
532 file->linenum++;
533 *p++ = 0;
534 return line;
538 /* This function rewinds the requested file back to the line requested,
539 reads it in again into the buffer provided and then restores the file
540 back to its original location. */
542 static char *
543 rebuffer_line (file_info_type * file,
544 unsigned int linenum,
545 char * buffer,
546 unsigned int size)
548 unsigned int count = 0;
549 unsigned int current_line = 1;
550 char * p = buffer;
551 long pos;
552 int c;
554 /* Sanity checks. */
555 if (file == NULL || buffer == NULL || size == 0 || file->linenum <= linenum)
556 return "";
558 /* Check the cache and see if we last used this file. */
559 if (last_open_file_info == NULL || file != last_open_file_info)
561 if (last_open_file)
563 last_open_file_info->pos = ftell (last_open_file);
564 fclose (last_open_file);
567 /* Open the file in the binary mode so that ftell above can
568 return a reliable value that we can feed to fseek below. */
569 last_open_file_info = file;
570 last_open_file = fopen (file->filename, FOPEN_RB);
571 if (last_open_file == NULL)
573 file->at_end = 1;
574 return "";
577 /* Seek to where we were last time this file was open. */
578 if (file->pos)
579 fseek (last_open_file, file->pos, SEEK_SET);
582 /* Remember where we are in the current file. */
583 pos = ftell (last_open_file);
585 /* Go back to the beginning. */
586 fseek (last_open_file, 0, SEEK_SET);
588 /* Skip lines prior to the one we are interested in. */
589 while (current_line < linenum)
591 /* fgets only stops on newlines and has a size limit,
592 so we read one character at a time instead. */
595 c = fgetc (last_open_file);
597 while (c != EOF && c != '\n' && c != '\r');
599 ++ current_line;
601 if (c == '\r' || c == '\n')
603 int next = fgetc (last_open_file);
605 /* If '\r' is followed by '\n', swallow that. Likewise, if '\n'
606 is followed by '\r', swallow that as well. */
607 if ((c == '\r' && next != '\n')
608 || (c == '\n' && next != '\r'))
609 ungetc (next, last_open_file);
613 /* Leave room for the nul at the end of the buffer. */
614 size -= 1;
616 /* Read in the line. */
617 c = fgetc (last_open_file);
619 while (c != EOF && c != '\n' && c != '\r')
621 if (count < size)
622 *p++ = c;
623 count++;
625 c = fgetc (last_open_file);
628 /* If '\r' is followed by '\n', swallow that. Likewise, if '\n'
629 is followed by '\r', swallow that as well. */
630 if (c == '\r' || c == '\n')
632 int next = fgetc (last_open_file);
634 if ((c == '\r' && next != '\n')
635 || (c == '\n' && next != '\r'))
636 ungetc (next, last_open_file);
639 /* Terminate the line. */
640 *p++ = 0;
642 /* Reset the file position. */
643 fseek (last_open_file, pos, SEEK_SET);
645 return buffer;
648 static const char *fn;
650 static unsigned int eject; /* Eject pending */
651 static unsigned int page; /* Current page number */
652 static char *title; /* Current title */
653 static char *subtitle; /* Current subtitle */
654 static unsigned int on_page; /* Number of lines printed on current page */
656 static void
657 listing_page (list_info_type *list)
659 /* Grope around, see if we can see a title or subtitle edict coming up
660 soon. (we look down 10 lines of the page and see if it's there) */
661 if ((eject || (on_page >= (unsigned int) paper_height))
662 && paper_height != 0)
664 unsigned int c = 10;
665 int had_title = 0;
666 int had_subtitle = 0;
668 page++;
670 while (c != 0 && list)
672 if (list->edict == EDICT_SBTTL && !had_subtitle)
674 had_subtitle = 1;
675 subtitle = list->edict_arg;
677 if (list->edict == EDICT_TITLE && !had_title)
679 had_title = 1;
680 title = list->edict_arg;
682 list = list->next;
683 c--;
686 if (page > 1)
688 fprintf (list_file, "\f");
691 fprintf (list_file, "%s %s \t\t\tpage %d\n", LISTING_HEADER, fn, page);
692 fprintf (list_file, "%s\n", title);
693 fprintf (list_file, "%s\n", subtitle);
694 on_page = 3;
695 eject = 0;
699 /* Print a line into the list_file. Update the line count
700 and if necessary start a new page. */
702 static void
703 emit_line (list_info_type * list, const char * format, ...)
705 va_list args;
707 va_start (args, format);
709 vfprintf (list_file, format, args);
710 on_page++;
711 listing_page (list);
713 va_end (args);
716 static unsigned int
717 calc_hex (list_info_type *list)
719 int data_buffer_size;
720 list_info_type *first = list;
721 unsigned int address = ~(unsigned int) 0;
722 fragS *frag;
723 fragS *frag_ptr;
724 unsigned int octet_in_frag;
726 /* Find first frag which says it belongs to this line. */
727 frag = list->frag;
728 while (frag && frag->line != list)
729 frag = frag->fr_next;
731 frag_ptr = frag;
733 data_buffer_size = 0;
735 /* Dump all the frags which belong to this line. */
736 while (frag_ptr != (fragS *) NULL && frag_ptr->line == first)
738 /* Print as many bytes from the fixed part as is sensible. */
739 octet_in_frag = 0;
740 while ((offsetT) octet_in_frag < frag_ptr->fr_fix
741 && data_buffer_size < MAX_BYTES - 3)
743 if (address == ~(unsigned int) 0)
744 address = frag_ptr->fr_address / OCTETS_PER_BYTE;
746 sprintf (data_buffer + data_buffer_size,
747 "%02X",
748 (frag_ptr->fr_literal[octet_in_frag]) & 0xff);
749 data_buffer_size += 2;
750 octet_in_frag++;
752 if (frag_ptr->fr_type == rs_fill)
754 unsigned int var_rep_max = octet_in_frag;
755 unsigned int var_rep_idx = octet_in_frag;
757 /* Print as many bytes from the variable part as is sensible. */
758 while (((offsetT) octet_in_frag
759 < (frag_ptr->fr_fix + frag_ptr->fr_var * frag_ptr->fr_offset))
760 && data_buffer_size < MAX_BYTES - 3)
762 if (address == ~(unsigned int) 0)
763 address = frag_ptr->fr_address / OCTETS_PER_BYTE;
765 sprintf (data_buffer + data_buffer_size,
766 "%02X",
767 (frag_ptr->fr_literal[var_rep_idx]) & 0xff);
768 data_buffer_size += 2;
770 var_rep_idx++;
771 octet_in_frag++;
773 if ((offsetT) var_rep_idx >= frag_ptr->fr_fix + frag_ptr->fr_var)
774 var_rep_idx = var_rep_max;
778 frag_ptr = frag_ptr->fr_next;
780 data_buffer[data_buffer_size] = '\0';
781 return address;
784 static void
785 print_lines (list_info_type *list, unsigned int lineno,
786 char *string, unsigned int address)
788 unsigned int idx;
789 unsigned int nchars;
790 unsigned int lines;
791 unsigned int octet_in_word = 0;
792 char *src = data_buffer;
793 int cur;
795 /* Print the stuff on the first line. */
796 listing_page (list);
797 nchars = (LISTING_WORD_SIZE * 2 + 1) * listing_lhs_width;
799 /* Print the hex for the first line. */
800 if (address == ~(unsigned int) 0)
802 fprintf (list_file, "% 4d ", lineno);
803 for (idx = 0; idx < nchars; idx++)
804 fprintf (list_file, " ");
806 emit_line (NULL, "\t%s\n", string ? string : "");
807 return;
810 if (had_errors ())
811 fprintf (list_file, "% 4d ???? ", lineno);
812 else
813 fprintf (list_file, "% 4d %04x ", lineno, address);
815 /* And the data to go along with it. */
816 idx = 0;
817 cur = 0;
818 while (src[cur] && idx < nchars)
820 int offset;
821 offset = cur;
822 fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
823 cur += 2;
824 octet_in_word++;
826 if (octet_in_word == LISTING_WORD_SIZE)
828 fprintf (list_file, " ");
829 idx++;
830 octet_in_word = 0;
833 idx += 2;
836 for (; idx < nchars; idx++)
837 fprintf (list_file, " ");
839 emit_line (list, "\t%s\n", string ? string : "");
841 if (list->message)
842 emit_line (list, "**** %s\n", list->message);
844 for (lines = 0;
845 lines < (unsigned int) listing_lhs_cont_lines
846 && src[cur];
847 lines++)
849 nchars = ((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second - 1;
850 idx = 0;
852 /* Print any more lines of data, but more compactly. */
853 fprintf (list_file, "% 4d ", lineno);
855 while (src[cur] && idx < nchars)
857 int offset;
858 offset = cur;
859 fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
860 cur += 2;
861 idx += 2;
862 octet_in_word++;
864 if (octet_in_word == LISTING_WORD_SIZE)
866 fprintf (list_file, " ");
867 idx++;
868 octet_in_word = 0;
872 emit_line (list, "\n");
876 static void
877 list_symbol_table (void)
879 extern symbolS *symbol_rootP;
880 int got_some = 0;
882 symbolS *ptr;
883 eject = 1;
884 listing_page (NULL);
886 for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
888 if (SEG_NORMAL (S_GET_SEGMENT (ptr))
889 || S_GET_SEGMENT (ptr) == absolute_section)
891 /* Don't report section symbols. They are not interesting. */
892 if (symbol_section_p (ptr))
893 continue;
895 if (S_GET_NAME (ptr))
897 char buf[30], fmt[8];
898 valueT val = S_GET_VALUE (ptr);
900 /* @@ Note that this is dependent on the compilation options,
901 not solely on the target characteristics. */
902 if (sizeof (val) == 4 && sizeof (int) == 4)
903 sprintf (buf, "%08lx", (unsigned long) val);
904 else if (sizeof (val) <= sizeof (unsigned long))
906 sprintf (fmt, "%%0%lulx",
907 (unsigned long) (sizeof (val) * 2));
908 sprintf (buf, fmt, (unsigned long) val);
910 #if defined (BFD64)
911 else if (sizeof (val) > 4)
912 sprintf_vma (buf, val);
913 #endif
914 else
915 abort ();
917 if (!got_some)
919 fprintf (list_file, "DEFINED SYMBOLS\n");
920 on_page++;
921 got_some = 1;
924 if (symbol_get_frag (ptr) && symbol_get_frag (ptr)->line)
926 fprintf (list_file, "%20s:%-5d %s:%s %s\n",
927 symbol_get_frag (ptr)->line->file->filename,
928 symbol_get_frag (ptr)->line->line,
929 segment_name (S_GET_SEGMENT (ptr)),
930 buf, S_GET_NAME (ptr));
932 else
934 fprintf (list_file, "%33s:%s %s\n",
935 segment_name (S_GET_SEGMENT (ptr)),
936 buf, S_GET_NAME (ptr));
939 on_page++;
940 listing_page (NULL);
945 if (!got_some)
947 fprintf (list_file, "NO DEFINED SYMBOLS\n");
948 on_page++;
950 emit_line (NULL, "\n");
952 got_some = 0;
954 for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
956 if (S_GET_NAME (ptr) && strlen (S_GET_NAME (ptr)) != 0)
958 if (S_GET_SEGMENT (ptr) == undefined_section)
960 if (!got_some)
962 got_some = 1;
964 emit_line (NULL, "UNDEFINED SYMBOLS\n");
967 emit_line (NULL, "%s\n", S_GET_NAME (ptr));
972 if (!got_some)
973 emit_line (NULL, "NO UNDEFINED SYMBOLS\n");
976 typedef struct cached_line
978 file_info_type * file;
979 unsigned int line;
980 char buffer [LISTING_RHS_WIDTH];
981 } cached_line;
983 static void
984 print_source (file_info_type * current_file,
985 list_info_type * list,
986 unsigned int width)
988 #define NUM_CACHE_LINES 3
989 static cached_line cached_lines[NUM_CACHE_LINES];
990 static int next_free_line = 0;
991 cached_line * cache = NULL;
993 if (current_file->linenum > list->hll_line
994 && list->hll_line > 0)
996 /* This can happen with modern optimizing compilers. The source
997 lines from the high level language input program are split up
998 and interleaved, meaning the line number we want to display
999 (list->hll_line) can have already been displayed. We have
1000 three choices:
1002 a. Do nothing, since we have already displayed the source
1003 line. This was the old behaviour.
1005 b. Display the particular line requested again, but only
1006 that line. This is the new behaviour.
1008 c. Display the particular line requested again and reset
1009 the current_file->line_num value so that we redisplay
1010 all the following lines as well the next time we
1011 encounter a larger line number. */
1012 int i;
1014 /* Check the cache, maybe we already have the line saved. */
1015 for (i = 0; i < NUM_CACHE_LINES; i++)
1016 if (cached_lines[i].file == current_file
1017 && cached_lines[i].line == list->hll_line)
1019 cache = cached_lines + i;
1020 break;
1023 if (i == NUM_CACHE_LINES)
1025 cache = cached_lines + next_free_line;
1026 next_free_line ++;
1027 if (next_free_line == NUM_CACHE_LINES)
1028 next_free_line = 0;
1030 cache->file = current_file;
1031 cache->line = list->hll_line;
1032 cache->buffer[0] = 0;
1033 rebuffer_line (current_file, cache->line, cache->buffer, width);
1036 emit_line (list, "%4u:%-13s **** %s\n",
1037 cache->line, cache->file->filename, cache->buffer);
1038 return;
1041 if (!current_file->at_end)
1043 int num_lines_shown = 0;
1045 while (current_file->linenum < list->hll_line
1046 && !current_file->at_end)
1048 char *p;
1050 cache = cached_lines + next_free_line;
1051 cache->file = current_file;
1052 cache->line = current_file->linenum + 1;
1053 cache->buffer[0] = 0;
1054 p = buffer_line (current_file, cache->buffer, width);
1056 /* Cache optimization: If printing a group of lines
1057 cache the first and last lines in the group. */
1058 if (num_lines_shown == 0)
1060 next_free_line ++;
1061 if (next_free_line == NUM_CACHE_LINES)
1062 next_free_line = 0;
1065 emit_line (list, "%4u:%-13s **** %s\n",
1066 cache->line, cache->file->filename, p);
1067 num_lines_shown ++;
1072 /* Sometimes the user doesn't want to be bothered by the debugging
1073 records inserted by the compiler, see if the line is suspicious. */
1075 static int
1076 debugging_pseudo (list_info_type *list, const char *line)
1078 #ifdef OBJ_ELF
1079 static int in_debug;
1080 int was_debug;
1081 #endif
1083 if (list->debugging)
1085 #ifdef OBJ_ELF
1086 in_debug = 1;
1087 #endif
1088 return 1;
1090 #ifdef OBJ_ELF
1091 was_debug = in_debug;
1092 in_debug = 0;
1093 #endif
1095 while (ISSPACE (*line))
1096 line++;
1098 if (*line != '.')
1100 #ifdef OBJ_ELF
1101 /* The ELF compiler sometimes emits blank lines after switching
1102 out of a debugging section. If the next line drops us back
1103 into debugging information, then don't print the blank line.
1104 This is a hack for a particular compiler behaviour, not a
1105 general case. */
1106 if (was_debug
1107 && *line == '\0'
1108 && list->next != NULL
1109 && list->next->debugging)
1111 in_debug = 1;
1112 return 1;
1114 #endif
1116 return 0;
1119 line++;
1121 if (strncmp (line, "def", 3) == 0)
1122 return 1;
1123 if (strncmp (line, "val", 3) == 0)
1124 return 1;
1125 if (strncmp (line, "scl", 3) == 0)
1126 return 1;
1127 if (strncmp (line, "line", 4) == 0)
1128 return 1;
1129 if (strncmp (line, "endef", 5) == 0)
1130 return 1;
1131 if (strncmp (line, "ln", 2) == 0)
1132 return 1;
1133 if (strncmp (line, "type", 4) == 0)
1134 return 1;
1135 if (strncmp (line, "size", 4) == 0)
1136 return 1;
1137 if (strncmp (line, "dim", 3) == 0)
1138 return 1;
1139 if (strncmp (line, "tag", 3) == 0)
1140 return 1;
1141 if (strncmp (line, "stabs", 5) == 0)
1142 return 1;
1143 if (strncmp (line, "stabn", 5) == 0)
1144 return 1;
1146 return 0;
1149 static void
1150 listing_listing (char *name ATTRIBUTE_UNUSED)
1152 list_info_type *list = head;
1153 file_info_type *current_hll_file = (file_info_type *) NULL;
1154 char *buffer;
1155 char *p;
1156 int show_listing = 1;
1157 unsigned int width;
1159 buffer = (char *) xmalloc (listing_rhs_width);
1160 data_buffer = (char *) xmalloc (MAX_BYTES);
1161 eject = 1;
1162 list = head->next;
1164 while (list)
1166 unsigned int list_line;
1168 width = listing_rhs_width > paper_width ? paper_width :
1169 listing_rhs_width;
1171 list_line = list->line;
1172 switch (list->edict)
1174 case EDICT_LIST:
1175 /* Skip all lines up to the current. */
1176 list_line--;
1177 break;
1178 case EDICT_NOLIST:
1179 show_listing--;
1180 break;
1181 case EDICT_NOLIST_NEXT:
1182 if (show_listing == 0)
1183 list_line--;
1184 break;
1185 case EDICT_EJECT:
1186 break;
1187 case EDICT_NONE:
1188 break;
1189 case EDICT_TITLE:
1190 title = list->edict_arg;
1191 break;
1192 case EDICT_SBTTL:
1193 subtitle = list->edict_arg;
1194 break;
1195 default:
1196 abort ();
1199 if (show_listing <= 0)
1201 while (list->file->linenum < list_line
1202 && !list->file->at_end)
1203 p = buffer_line (list->file, buffer, width);
1206 if (list->edict == EDICT_LIST
1207 || (list->edict == EDICT_NOLIST_NEXT && show_listing == 0))
1209 /* Enable listing for the single line that caused the enable. */
1210 list_line++;
1211 show_listing++;
1214 if (show_listing > 0)
1216 /* Scan down the list and print all the stuff which can be done
1217 with this line (or lines). */
1218 if (list->hll_file)
1219 current_hll_file = list->hll_file;
1221 if (current_hll_file && list->hll_line && (listing & LISTING_HLL))
1222 print_source (current_hll_file, list, width);
1224 if (list->line_contents)
1226 if (!((listing & LISTING_NODEBUG)
1227 && debugging_pseudo (list, list->line_contents)))
1228 print_lines (list,
1229 list->file->linenum == 0 ? list->line : list->file->linenum,
1230 list->line_contents, calc_hex (list));
1232 free (list->line_contents);
1233 list->line_contents = NULL;
1235 else
1237 while (list->file->linenum < list_line
1238 && !list->file->at_end)
1240 unsigned int address;
1242 p = buffer_line (list->file, buffer, width);
1244 if (list->file->linenum < list_line)
1245 address = ~(unsigned int) 0;
1246 else
1247 address = calc_hex (list);
1249 if (!((listing & LISTING_NODEBUG)
1250 && debugging_pseudo (list, p)))
1251 print_lines (list, list->file->linenum, p, address);
1255 if (list->edict == EDICT_EJECT)
1256 eject = 1;
1259 if (list->edict == EDICT_NOLIST_NEXT && show_listing == 1)
1260 --show_listing;
1262 list = list->next;
1265 free (buffer);
1266 free (data_buffer);
1267 data_buffer = NULL;
1270 /* Print time stamp in ISO format: yyyy-mm-ddThh:mm:ss.ss+/-zzzz. */
1272 static void
1273 print_timestamp (void)
1275 const time_t now = time (NULL);
1276 struct tm * timestamp;
1277 char stampstr[MAX_DATELEN];
1279 /* Any portable way to obtain subsecond values??? */
1280 timestamp = localtime (&now);
1281 strftime (stampstr, MAX_DATELEN, "%Y-%m-%dT%H:%M:%S.000%z", timestamp);
1282 fprintf (list_file, _("\n time stamp \t: %s\n\n"), stampstr);
1285 static void
1286 print_single_option (char * opt, int *pos)
1288 int opt_len = strlen (opt);
1290 if ((*pos + opt_len) < paper_width)
1292 fprintf (list_file, _("%s "), opt);
1293 *pos = *pos + opt_len;
1295 else
1297 fprintf (list_file, _("\n\t%s "), opt);
1298 *pos = opt_len;
1302 /* Print options passed to as. */
1304 static void
1305 print_options (char ** argv)
1307 const char *field_name = _("\n options passed\t: ");
1308 int pos = strlen (field_name);
1309 char **p;
1311 fputs (field_name, list_file);
1312 for (p = &argv[1]; *p != NULL; p++)
1313 if (**p == '-')
1315 /* Ignore these. */
1316 if (strcmp (*p, "-o") == 0)
1318 if (p[1] != NULL)
1319 p++;
1320 continue;
1322 if (strcmp (*p, "-v") == 0)
1323 continue;
1325 print_single_option (*p, &pos);
1329 /* Print a first section with basic info like file names, as version,
1330 options passed, target, and timestamp.
1331 The format of this section is as follows:
1333 AS VERSION
1335 fieldname TAB ':' fieldcontents
1336 { TAB fieldcontents-cont } */
1338 static void
1339 listing_general_info (char ** argv)
1341 /* Print the stuff on the first line. */
1342 eject = 1;
1343 listing_page (NULL);
1345 fprintf (list_file,
1346 _(" GNU assembler version %s (%s)\n\t using BFD version %s."),
1347 VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
1348 print_options (argv);
1349 fprintf (list_file, _("\n input file \t: %s"), fn);
1350 fprintf (list_file, _("\n output file \t: %s"), out_file_name);
1351 fprintf (list_file, _("\n target \t: %s"), TARGET_CANONICAL);
1352 print_timestamp ();
1355 void
1356 listing_print (char *name, char **argv)
1358 int using_stdout;
1360 title = "";
1361 subtitle = "";
1363 if (name == NULL)
1365 list_file = stdout;
1366 using_stdout = 1;
1368 else
1370 list_file = fopen (name, FOPEN_WT);
1371 if (list_file != NULL)
1372 using_stdout = 0;
1373 else
1375 as_warn (_("can't open %s: %s"), name, xstrerror (errno));
1376 list_file = stdout;
1377 using_stdout = 1;
1381 if (listing & LISTING_NOFORM)
1382 paper_height = 0;
1384 if (listing & LISTING_GENERAL)
1385 listing_general_info (argv);
1387 if (listing & LISTING_LISTING)
1388 listing_listing (name);
1390 if (listing & LISTING_SYMBOLS)
1391 list_symbol_table ();
1393 if (! using_stdout)
1395 if (fclose (list_file) == EOF)
1396 as_warn (_("can't close %s: %s"), name, xstrerror (errno));
1399 if (last_open_file)
1400 fclose (last_open_file);
1403 void
1404 listing_file (const char *name)
1406 fn = name;
1409 void
1410 listing_eject (int ignore ATTRIBUTE_UNUSED)
1412 if (listing)
1413 listing_tail->edict = EDICT_EJECT;
1416 /* Turn listing on or off. An argument of 0 means to turn off
1417 listing. An argument of 1 means to turn on listing. An argument
1418 of 2 means to turn off listing, but as of the next line; that is,
1419 the current line should be listed, but the next line should not. */
1421 void
1422 listing_list (int on)
1424 if (listing)
1426 switch (on)
1428 case 0:
1429 if (listing_tail->edict == EDICT_LIST)
1430 listing_tail->edict = EDICT_NONE;
1431 else
1432 listing_tail->edict = EDICT_NOLIST;
1433 break;
1434 case 1:
1435 if (listing_tail->edict == EDICT_NOLIST
1436 || listing_tail->edict == EDICT_NOLIST_NEXT)
1437 listing_tail->edict = EDICT_NONE;
1438 else
1439 listing_tail->edict = EDICT_LIST;
1440 break;
1441 case 2:
1442 listing_tail->edict = EDICT_NOLIST_NEXT;
1443 break;
1444 default:
1445 abort ();
1450 void
1451 listing_psize (int width_only)
1453 if (! width_only)
1455 paper_height = get_absolute_expression ();
1457 if (paper_height < 0 || paper_height > 1000)
1459 paper_height = 0;
1460 as_warn (_("strange paper height, set to no form"));
1463 if (*input_line_pointer != ',')
1465 demand_empty_rest_of_line ();
1466 return;
1469 ++input_line_pointer;
1472 paper_width = get_absolute_expression ();
1474 demand_empty_rest_of_line ();
1477 void
1478 listing_nopage (int ignore ATTRIBUTE_UNUSED)
1480 paper_height = 0;
1483 void
1484 listing_title (int depth)
1486 int quoted;
1487 char *start;
1488 char *ttl;
1489 unsigned int length;
1491 SKIP_WHITESPACE ();
1492 if (*input_line_pointer != '\"')
1493 quoted = 0;
1494 else
1496 quoted = 1;
1497 ++input_line_pointer;
1500 start = input_line_pointer;
1502 while (*input_line_pointer)
1504 if (quoted
1505 ? *input_line_pointer == '\"'
1506 : is_end_of_line[(unsigned char) *input_line_pointer])
1508 if (listing)
1510 length = input_line_pointer - start;
1511 ttl = (char *) xmalloc (length + 1);
1512 memcpy (ttl, start, length);
1513 ttl[length] = 0;
1514 listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE;
1515 listing_tail->edict_arg = ttl;
1517 if (quoted)
1518 input_line_pointer++;
1519 demand_empty_rest_of_line ();
1520 return;
1522 else if (*input_line_pointer == '\n')
1524 as_bad (_("new line in title"));
1525 demand_empty_rest_of_line ();
1526 return;
1528 else
1530 input_line_pointer++;
1535 void
1536 listing_source_line (unsigned int line)
1538 if (listing)
1540 new_frag ();
1541 listing_tail->hll_line = line;
1542 new_frag ();
1546 void
1547 listing_source_file (const char *file)
1549 if (listing)
1550 listing_tail->hll_file = file_info (file);
1553 #else
1555 /* Dummy functions for when compiled without listing enabled. */
1557 void
1558 listing_list (int on)
1560 s_ignore (0);
1563 void
1564 listing_eject (int ignore)
1566 s_ignore (0);
1569 void
1570 listing_psize (int ignore)
1572 s_ignore (0);
1575 void
1576 listing_nopage (int ignore)
1578 s_ignore (0);
1581 void
1582 listing_title (int depth)
1584 s_ignore (0);
1587 void
1588 listing_file (const char *name)
1592 void
1593 listing_newline (char *name)
1597 void
1598 listing_source_line (unsigned int n)
1602 void
1603 listing_source_file (const char *n)
1607 #endif