gas/listing.c

   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
   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 3, 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 #include "bfdver.h"
  98 #include <time.h>
  99
 100 #ifndef NO_LISTING
 101
 102 #ifndef LISTING_HEADER
 103 #define LISTING_HEADER "GAS LISTING"
 104 #endif
 105 #ifndef LISTING_WORD_SIZE
 106 #define LISTING_WORD_SIZE 4
 107 #endif
 108 #ifndef LISTING_LHS_WIDTH
 109 #define LISTING_LHS_WIDTH ((LISTING_WORD_SIZE) > 4 ? 1 : 4 / (LISTING_WORD_SIZE))
 110 #endif
 111 #ifndef LISTING_LHS_WIDTH_SECOND
 112 #define LISTING_LHS_WIDTH_SECOND LISTING_LHS_WIDTH
 113 #endif
 114 #ifndef LISTING_RHS_WIDTH
 115 #define LISTING_RHS_WIDTH 100
 116 #endif
 117 #ifndef LISTING_LHS_CONT_LINES
 118 #define LISTING_LHS_CONT_LINES 4
 119 #endif
 120 #define MAX_DATELEN 30
 121
 122 /* This structure remembers which .s were used.  */
 123 typedef struct file_info_struct
 124 {
 125   struct file_info_struct * next;
 126   char *                    filename;
 127   long                      pos;
 128   unsigned int              linenum;
 129   int                       at_end;
 130 } file_info_type;
 131
 132 /* This structure remembers which line from which file goes into which
 133    frag.  */
 134 struct list_info_struct
 135 {
 136   /* Frag which this line of source is nearest to.  */
 137   fragS *frag;
 138
 139   /* The actual line in the source file.  */
 140   unsigned int line;
 141
 142   /* Pointer to the file info struct for the file which this line
 143      belongs to.  */
 144   file_info_type *file;
 145
 146   /* The expanded text of any macro that may have been executing.  */
 147   char *line_contents;
 148
 149   /* Next in list.  */
 150   struct list_info_struct *next;
 151
 152   /* Pointer to the file info struct for the high level language
 153      source line that belongs here.  */
 154   file_info_type *hll_file;
 155
 156   /* High level language source line.  */
 157   unsigned int hll_line;
 158
 159   /* Pointer to any error message associated with this line.  */
 160   char *message;
 161
 162   enum
 163     {
 164       EDICT_NONE,
 165       EDICT_SBTTL,
 166       EDICT_TITLE,
 167       EDICT_NOLIST,
 168       EDICT_LIST,
 169       EDICT_NOLIST_NEXT,
 170       EDICT_EJECT
 171     } edict;
 172   char *edict_arg;
 173
 174   /* Nonzero if this line is to be omitted because it contains
 175      debugging information.  This can become a flags field if we come
 176      up with more information to store here.  */
 177   int debugging;
 178 };
 179
 180 typedef struct list_info_struct list_info_type;
 181
 182 int listing_lhs_width        = LISTING_LHS_WIDTH;
 183 int listing_lhs_width_second = LISTING_LHS_WIDTH_SECOND;
 184 int listing_lhs_cont_lines   = LISTING_LHS_CONT_LINES;
 185 int listing_rhs_width        = LISTING_RHS_WIDTH;
 186
 187 struct list_info_struct *        listing_tail;
 188
 189 static file_info_type *          file_info_head;
 190 static file_info_type *          last_open_file_info;
 191 static FILE *                    last_open_file;
 192 static struct list_info_struct * head;
 193 static int                       paper_width = 200;
 194 static int                       paper_height = 60;
 195
 196 extern int                       listing;
 197
 198 /* File to output listings to.  */
 199 static FILE *list_file;
 200
 201 /* This static array is used to keep the text of data to be printed
 202    before the start of the line.  */
 203
 204 #define MAX_BYTES                                                       \
 205   (((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width                    \
 206    + ((((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second)        \
 207       * listing_lhs_cont_lines)                                         \
 208    + 20)
 209
 210 static char *data_buffer;
 211
 212 /* Prototypes.  */
 213 static void listing_message (const char *, const char *);
 214 static file_info_type *file_info (const char *);
 215 static void new_frag (void);
 216 static char *buffer_line (file_info_type *, char *, unsigned int);
 217 static void listing_page (list_info_type *);
 218 static unsigned int calc_hex (list_info_type *);
 219 static void print_lines (list_info_type *, unsigned int, char *, unsigned int);
 220 static void list_symbol_table (void);
 221 static void print_source (file_info_type *, list_info_type *, char *, unsigned int);
 222 static int debugging_pseudo (list_info_type *, const char *);
 223 static void listing_listing (char *);
 224
 225 static void
 226 listing_message (const char *name, const char *message)
 227 {
 228   if (listing_tail != (list_info_type *) NULL)
 229     {
 230       unsigned int l = strlen (name) + strlen (message) + 1;
 231       char *n = (char *) xmalloc (l);
 232       strcpy (n, name);
 233       strcat (n, message);
 234       listing_tail->message = n;
 235     }
 236 }
 237
 238 void
 239 listing_warning (const char *message)
 240 {
 241   listing_message (_("Warning:"), message);
 242 }
 243
 244 void
 245 listing_error (const char *message)
 246 {
 247   listing_message (_("Error:"), message);
 248 }
 249
 250 static file_info_type *
 251 file_info (const char *file_name)
 252 {
 253   /* Find an entry with this file name.  */
 254   file_info_type *p = file_info_head;
 255
 256   while (p != (file_info_type *) NULL)
 257     {
 258       if (strcmp (p->filename, file_name) == 0)
 259         return p;
 260       p = p->next;
 261     }
 262
 263   /* Make new entry.  */
 264   p = xmalloc (sizeof (file_info_type));
 265   p->next = file_info_head;
 266   file_info_head = p;
 267   p->filename = xstrdup (file_name);
 268   p->pos = 0;
 269   p->linenum = 0;
 270   p->at_end = 0;
 271
 272   return p;
 273 }
 274
 275 static void
 276 new_frag (void)
 277 {
 278   frag_wane (frag_now);
 279   frag_new (0);
 280 }
 281
 282 void
 283 listing_newline (char *ps)
 284 {
 285   char *file;
 286   unsigned int line;
 287   static unsigned int last_line = 0xffff;
 288   static char *last_file = NULL;
 289   list_info_type *new = NULL;
 290
 291   if (listing == 0)
 292     return;
 293
 294   if (now_seg == absolute_section)
 295     return;
 296
 297 #ifdef OBJ_ELF
 298   /* In ELF, anything in a section beginning with .debug or .line is
 299      considered to be debugging information.  This includes the
 300      statement which switches us into the debugging section, which we
 301      can only set after we are already in the debugging section.  */
 302   if ((listing & LISTING_NODEBUG) != 0
 303       && listing_tail != NULL
 304       && ! listing_tail->debugging)
 305     {
 306       const char *segname;
 307
 308       segname = segment_name (now_seg);
 309       if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
 310           || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
 311         listing_tail->debugging = 1;
 312     }
 313 #endif
 314
 315   as_where (&file, &line);
 316   if (ps == NULL)
 317     {
 318       if (line == last_line
 319           && !(last_file && file && strcmp (file, last_file)))
 320         return;
 321
 322       new = (list_info_type *) xmalloc (sizeof (list_info_type));
 323
 324       /* Detect if we are reading from stdin by examining the file
 325          name returned by as_where().
 326
 327          [FIXME: We rely upon the name in the strcmp below being the
 328          same as the one used by input_scrub_new_file(), if that is
 329          not true, then this code will fail].
 330
 331          If we are reading from stdin, then we need to save each input
 332          line here (assuming of course that we actually have a line of
 333          input to read), so that it can be displayed in the listing
 334          that is produced at the end of the assembly.  */
 335       if (strcmp (file, _("{standard input}")) == 0
 336           && input_line_pointer != NULL)
 337         {
 338           char *copy;
 339           int len;
 340           int seen_quote = 0;
 341
 342           for (copy = input_line_pointer - 1;
 343                *copy && (seen_quote
 344                          || (! is_end_of_line [(unsigned char) *copy]));
 345                copy++)
 346             if (*copy == '"' && copy[-1] != '\\')
 347               seen_quote = ! seen_quote;
 348
 349           len = (copy - input_line_pointer) + 2;
 350
 351           copy = xmalloc (len);
 352
 353           if (copy != NULL)
 354             {
 355               char *src = input_line_pointer - 1;
 356               char *dest = copy;
 357
 358               while (--len)
 359                 {
 360                   unsigned char c = *src++;
 361
 362                   /* Omit control characters in the listing.  */
 363                   if (!ISCNTRL (c))
 364                     *dest++ = c;
 365                 }
 366
 367               *dest = 0;
 368             }
 369
 370           new->line_contents = copy;
 371         }
 372       else
 373         new->line_contents = NULL;
 374     }
 375   else
 376     {
 377       new = xmalloc (sizeof (list_info_type));
 378       new->line_contents = ps;
 379     }
 380
 381   last_line = line;
 382   last_file = file;
 383
 384   new_frag ();
 385
 386   if (listing_tail)
 387     listing_tail->next = new;
 388   else
 389     head = new;
 390
 391   listing_tail = new;
 392
 393   new->frag = frag_now;
 394   new->line = line;
 395   new->file = file_info (file);
 396   new->next = (list_info_type *) NULL;
 397   new->message = (char *) NULL;
 398   new->edict = EDICT_NONE;
 399   new->hll_file = (file_info_type *) NULL;
 400   new->hll_line = 0;
 401   new->debugging = 0;
 402
 403   new_frag ();
 404
 405 #ifdef OBJ_ELF
 406   /* In ELF, anything in a section beginning with .debug or .line is
 407      considered to be debugging information.  */
 408   if ((listing & LISTING_NODEBUG) != 0)
 409     {
 410       const char *segname;
 411
 412       segname = segment_name (now_seg);
 413       if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
 414           || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
 415         new->debugging = 1;
 416     }
 417 #endif
 418 }
 419
 420 /* Attach all current frags to the previous line instead of the
 421    current line.  This is called by the MIPS backend when it discovers
 422    that it needs to add some NOP instructions; the added NOP
 423    instructions should go with the instruction that has the delay, not
 424    with the new instruction.  */
 425
 426 void
 427 listing_prev_line (void)
 428 {
 429   list_info_type *l;
 430   fragS *f;
 431
 432   if (head == (list_info_type *) NULL
 433       || head == listing_tail)
 434     return;
 435
 436   new_frag ();
 437
 438   for (l = head; l->next != listing_tail; l = l->next)
 439     ;
 440
 441   for (f = frchain_now->frch_root; f != (fragS *) NULL; f = f->fr_next)
 442     if (f->line == listing_tail)
 443       f->line = l;
 444
 445   listing_tail->frag = frag_now;
 446   new_frag ();
 447 }
 448
 449 /* This function returns the next source line from the file supplied,
 450    truncated to size.  It appends a fake line to the end of each input
 451    file to make.  */
 452
 453 static char *
 454 buffer_line (file_info_type *file, char *line, unsigned int size)
 455 {
 456   unsigned int count = 0;
 457   int c;
 458
 459   char *p = line;
 460
 461   /* If we couldn't open the file, return an empty line.  */
 462   if (file->at_end)
 463     return "";
 464
 465   /* Check the cache and see if we last used this file.  */
 466   if (!last_open_file_info || file != last_open_file_info)
 467     {
 468       if (last_open_file)
 469         {
 470           last_open_file_info->pos = ftell (last_open_file);
 471           fclose (last_open_file);
 472         }
 473
 474       last_open_file_info = file;
 475       last_open_file = fopen (file->filename, FOPEN_RT);
 476       if (last_open_file == NULL)
 477         {
 478           file->at_end = 1;
 479           return "";
 480         }
 481
 482       /* Seek to where we were last time this file was open.  */
 483       if (file->pos)
 484         fseek (last_open_file, file->pos, SEEK_SET);
 485     }
 486
 487   c = fgetc (last_open_file);
 488
 489   /* Leave room for null.  */
 490   size -= 1;
 491
 492   while (c != EOF && c != '\n')
 493     {
 494       if (count < size)
 495         *p++ = c;
 496       count++;
 497
 498       c = fgetc (last_open_file);
 499
 500     }
 501   if (c == EOF)
 502     {
 503       file->at_end = 1;
 504       if (count + 2 < size)
 505         {
 506           *p++ = '.';
 507           *p++ = '.';
 508           *p++ = '.';
 509         }
 510     }
 511   file->linenum++;
 512   *p++ = 0;
 513   return line;
 514 }
 515
 516 static const char *fn;
 517
 518 static unsigned int eject;      /* Eject pending */
 519 static unsigned int page;       /* Current page number */
 520 static char *title;             /* Current title */
 521 static char *subtitle;          /* Current subtitle */
 522 static unsigned int on_page;    /* Number of lines printed on current page */
 523
 524 static void
 525 listing_page (list_info_type *list)
 526 {
 527   /* Grope around, see if we can see a title or subtitle edict coming up
 528      soon.  (we look down 10 lines of the page and see if it's there)  */
 529   if ((eject || (on_page >= (unsigned int) paper_height))
 530       && paper_height != 0)
 531     {
 532       unsigned int c = 10;
 533       int had_title = 0;
 534       int had_subtitle = 0;
 535
 536       page++;
 537
 538       while (c != 0 && list)
 539         {
 540           if (list->edict == EDICT_SBTTL && !had_subtitle)
 541             {
 542               had_subtitle = 1;
 543               subtitle = list->edict_arg;
 544             }
 545           if (list->edict == EDICT_TITLE && !had_title)
 546             {
 547               had_title = 1;
 548               title = list->edict_arg;
 549             }
 550           list = list->next;
 551           c--;
 552         }
 553
 554       if (page > 1)
 555         {
 556           fprintf (list_file, "\f");
 557         }
 558
 559       fprintf (list_file, "%s %s \t\t\tpage %d\n", LISTING_HEADER, fn, page);
 560       fprintf (list_file, "%s\n", title);
 561       fprintf (list_file, "%s\n", subtitle);
 562       on_page = 3;
 563       eject = 0;
 564     }
 565 }
 566
 567 static unsigned int
 568 calc_hex (list_info_type *list)
 569 {
 570   int data_buffer_size;
 571   list_info_type *first = list;
 572   unsigned int address = ~(unsigned int) 0;
 573   fragS *frag;
 574   fragS *frag_ptr;
 575   unsigned int octet_in_frag;
 576
 577   /* Find first frag which says it belongs to this line.  */
 578   frag = list->frag;
 579   while (frag && frag->line != list)
 580     frag = frag->fr_next;
 581
 582   frag_ptr = frag;
 583
 584   data_buffer_size = 0;
 585
 586   /* Dump all the frags which belong to this line.  */
 587   while (frag_ptr != (fragS *) NULL && frag_ptr->line == first)
 588     {
 589       /* Print as many bytes from the fixed part as is sensible.  */
 590       octet_in_frag = 0;
 591       while ((offsetT) octet_in_frag < frag_ptr->fr_fix
 592              && data_buffer_size < MAX_BYTES - 3)
 593         {
 594           if (address == ~(unsigned int) 0)
 595             address = frag_ptr->fr_address / OCTETS_PER_BYTE;
 596
 597           sprintf (data_buffer + data_buffer_size,
 598                    "%02X",
 599                    (frag_ptr->fr_literal[octet_in_frag]) & 0xff);
 600           data_buffer_size += 2;
 601           octet_in_frag++;
 602         }
 603       if (frag_ptr->fr_type == rs_fill)
 604         {
 605           unsigned int var_rep_max = octet_in_frag;
 606           unsigned int var_rep_idx = octet_in_frag;
 607
 608           /* Print as many bytes from the variable part as is sensible.  */
 609           while (((offsetT) octet_in_frag
 610                   < (frag_ptr->fr_fix + frag_ptr->fr_var * frag_ptr->fr_offset))
 611                  && data_buffer_size < MAX_BYTES - 3)
 612             {
 613               if (address == ~(unsigned int) 0)
 614                 address = frag_ptr->fr_address / OCTETS_PER_BYTE;
 615
 616               sprintf (data_buffer + data_buffer_size,
 617                        "%02X",
 618                        (frag_ptr->fr_literal[var_rep_idx]) & 0xff);
 619               data_buffer_size += 2;
 620
 621               var_rep_idx++;
 622               octet_in_frag++;
 623
 624               if ((offsetT) var_rep_idx >= frag_ptr->fr_fix + frag_ptr->fr_var)
 625                 var_rep_idx = var_rep_max;
 626             }
 627         }
 628
 629       frag_ptr = frag_ptr->fr_next;
 630     }
 631   data_buffer[data_buffer_size] = '\0';
 632   return address;
 633 }
 634
 635 static void
 636 print_lines (list_info_type *list, unsigned int lineno,
 637              char *string, unsigned int address)
 638 {
 639   unsigned int idx;
 640   unsigned int nchars;
 641   unsigned int lines;
 642   unsigned int octet_in_word = 0;
 643   char *src = data_buffer;
 644   int cur;
 645
 646   /* Print the stuff on the first line.  */
 647   listing_page (list);
 648   nchars = (LISTING_WORD_SIZE * 2 + 1) * listing_lhs_width;
 649
 650   /* Print the hex for the first line.  */
 651   if (address == ~(unsigned int) 0)
 652     {
 653       fprintf (list_file, "% 4d     ", lineno);
 654       for (idx = 0; idx < nchars; idx++)
 655         fprintf (list_file, " ");
 656
 657       fprintf (list_file, "\t%s\n", string ? string : "");
 658
 659       on_page++;
 660
 661       listing_page (0);
 662
 663       return;
 664     }
 665
 666   if (had_errors ())
 667     fprintf (list_file, "% 4d ???? ", lineno);
 668   else
 669     fprintf (list_file, "% 4d %04x ", lineno, address);
 670
 671   /* And the data to go along with it.  */
 672   idx = 0;
 673   cur = 0;
 674   while (src[cur] && idx < nchars)
 675     {
 676       int offset;
 677       offset = cur;
 678       fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
 679       cur += 2;
 680       octet_in_word++;
 681
 682       if (octet_in_word == LISTING_WORD_SIZE)
 683         {
 684           fprintf (list_file, " ");
 685           idx++;
 686           octet_in_word = 0;
 687         }
 688
 689       idx += 2;
 690     }
 691
 692   for (; idx < nchars; idx++)
 693     fprintf (list_file, " ");
 694
 695   fprintf (list_file, "\t%s\n", string ? string : "");
 696   on_page++;
 697   listing_page (list);
 698
 699   if (list->message)
 700     {
 701       fprintf (list_file, "****  %s\n", list->message);
 702       listing_page (list);
 703       on_page++;
 704     }
 705
 706   for (lines = 0;
 707        lines < (unsigned int) listing_lhs_cont_lines
 708          && src[cur];
 709        lines++)
 710     {
 711       nchars = ((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second - 1;
 712       idx = 0;
 713
 714       /* Print any more lines of data, but more compactly.  */
 715       fprintf (list_file, "% 4d      ", lineno);
 716
 717       while (src[cur] && idx < nchars)
 718         {
 719           int offset;
 720           offset = cur;
 721           fprintf (list_file, "%c%c", src[offset], src[offset + 1]);
 722           cur += 2;
 723           idx += 2;
 724           octet_in_word++;
 725
 726           if (octet_in_word == LISTING_WORD_SIZE)
 727             {
 728               fprintf (list_file, " ");
 729               idx++;
 730               octet_in_word = 0;
 731             }
 732         }
 733
 734       fprintf (list_file, "\n");
 735       on_page++;
 736       listing_page (list);
 737     }
 738 }
 739
 740 static void
 741 list_symbol_table (void)
 742 {
 743   extern symbolS *symbol_rootP;
 744   int got_some = 0;
 745
 746   symbolS *ptr;
 747   eject = 1;
 748   listing_page (0);
 749
 750   for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
 751     {
 752       if (SEG_NORMAL (S_GET_SEGMENT (ptr))
 753           || S_GET_SEGMENT (ptr) == absolute_section)
 754         {
 755           /* Don't report section symbols.  They are not interesting.  */
 756           if (symbol_section_p (ptr))
 757             continue;
 758
 759           if (S_GET_NAME (ptr))
 760             {
 761               char buf[30], fmt[8];
 762               valueT val = S_GET_VALUE (ptr);
 763
 764               /* @@ Note that this is dependent on the compilation options,
 765                  not solely on the target characteristics.  */
 766               if (sizeof (val) == 4 && sizeof (int) == 4)
 767                 sprintf (buf, "%08lx", (unsigned long) val);
 768               else if (sizeof (val) <= sizeof (unsigned long))
 769                 {
 770                   sprintf (fmt, "%%0%lulx",
 771                            (unsigned long) (sizeof (val) * 2));
 772                   sprintf (buf, fmt, (unsigned long) val);
 773                 }
 774 #if defined (BFD64)
 775               else if (sizeof (val) > 4)
 776                 sprintf_vma (buf, val);
 777 #endif
 778               else
 779                 abort ();
 780
 781               if (!got_some)
 782                 {
 783                   fprintf (list_file, "DEFINED SYMBOLS\n");
 784                   on_page++;
 785                   got_some = 1;
 786                 }
 787
 788               if (symbol_get_frag (ptr) && symbol_get_frag (ptr)->line)
 789                 {
 790                   fprintf (list_file, "%20s:%-5d  %s:%s %s\n",
 791                            symbol_get_frag (ptr)->line->file->filename,
 792                            symbol_get_frag (ptr)->line->line,
 793                            segment_name (S_GET_SEGMENT (ptr)),
 794                            buf, S_GET_NAME (ptr));
 795                 }
 796               else
 797                 {
 798                   fprintf (list_file, "%33s:%s %s\n",
 799                            segment_name (S_GET_SEGMENT (ptr)),
 800                            buf, S_GET_NAME (ptr));
 801                 }
 802
 803               on_page++;
 804               listing_page (0);
 805             }
 806         }
 807
 808     }
 809   if (!got_some)
 810     {
 811       fprintf (list_file, "NO DEFINED SYMBOLS\n");
 812       on_page++;
 813     }
 814   fprintf (list_file, "\n");
 815   on_page++;
 816   listing_page (0);
 817
 818   got_some = 0;
 819
 820   for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
 821     {
 822       if (S_GET_NAME (ptr) && strlen (S_GET_NAME (ptr)) != 0)
 823         {
 824           if (S_GET_SEGMENT (ptr) == undefined_section)
 825             {
 826               if (!got_some)
 827                 {
 828                   got_some = 1;
 829                   fprintf (list_file, "UNDEFINED SYMBOLS\n");
 830                   on_page++;
 831                   listing_page (0);
 832                 }
 833               fprintf (list_file, "%s\n", S_GET_NAME (ptr));
 834               on_page++;
 835               listing_page (0);
 836             }
 837         }
 838     }
 839   if (!got_some)
 840     {
 841       fprintf (list_file, "NO UNDEFINED SYMBOLS\n");
 842       on_page++;
 843       listing_page (0);
 844     }
 845 }
 846
 847 static void
 848 print_source (file_info_type *current_file, list_info_type *list,
 849               char *buffer, unsigned int width)
 850 {
 851   if (!current_file->at_end)
 852     {
 853       while (current_file->linenum < list->hll_line
 854              && !current_file->at_end)
 855         {
 856           char *p = buffer_line (current_file, buffer, width);
 857
 858           fprintf (list_file, "%4u:%-13s **** %s\n", current_file->linenum,
 859                    current_file->filename, p);
 860           on_page++;
 861           listing_page (list);
 862         }
 863     }
 864 }
 865
 866 /* Sometimes the user doesn't want to be bothered by the debugging
 867    records inserted by the compiler, see if the line is suspicious.  */
 868
 869 static int
 870 debugging_pseudo (list_info_type *list, const char *line)
 871 {
 872   static int in_debug;
 873   int was_debug;
 874
 875   if (list->debugging)
 876     {
 877       in_debug = 1;
 878       return 1;
 879     }
 880
 881   was_debug = in_debug;
 882   in_debug = 0;
 883
 884   while (ISSPACE (*line))
 885     line++;
 886
 887   if (*line != '.')
 888     {
 889 #ifdef OBJ_ELF
 890       /* The ELF compiler sometimes emits blank lines after switching
 891          out of a debugging section.  If the next line drops us back
 892          into debugging information, then don't print the blank line.
 893          This is a hack for a particular compiler behaviour, not a
 894          general case.  */
 895       if (was_debug
 896           && *line == '\0'
 897           && list->next != NULL
 898           && list->next->debugging)
 899         {
 900           in_debug = 1;
 901           return 1;
 902         }
 903 #endif
 904
 905       return 0;
 906     }
 907
 908   line++;
 909
 910   if (strncmp (line, "def", 3) == 0)
 911     return 1;
 912   if (strncmp (line, "val", 3) == 0)
 913     return 1;
 914   if (strncmp (line, "scl", 3) == 0)
 915     return 1;
 916   if (strncmp (line, "line", 4) == 0)
 917     return 1;
 918   if (strncmp (line, "endef", 5) == 0)
 919     return 1;
 920   if (strncmp (line, "ln", 2) == 0)
 921     return 1;
 922   if (strncmp (line, "type", 4) == 0)
 923     return 1;
 924   if (strncmp (line, "size", 4) == 0)
 925     return 1;
 926   if (strncmp (line, "dim", 3) == 0)
 927     return 1;
 928   if (strncmp (line, "tag", 3) == 0)
 929     return 1;
 930   if (strncmp (line, "stabs", 5) == 0)
 931     return 1;
 932   if (strncmp (line, "stabn", 5) == 0)
 933     return 1;
 934
 935   return 0;
 936 }
 937
 938 static void
 939 listing_listing (char *name ATTRIBUTE_UNUSED)
 940 {
 941   list_info_type *list = head;
 942   file_info_type *current_hll_file = (file_info_type *) NULL;
 943   char *message;
 944   char *buffer;
 945   char *p;
 946   int show_listing = 1;
 947   unsigned int width;
 948
 949   buffer = xmalloc (listing_rhs_width);
 950   data_buffer = xmalloc (MAX_BYTES);
 951   eject = 1;
 952   list = head->next;
 953
 954   while (list)
 955     {
 956       unsigned int list_line;
 957
 958       width = listing_rhs_width > paper_width ? paper_width :
 959         listing_rhs_width;
 960
 961       list_line = list->line;
 962       switch (list->edict)
 963         {
 964         case EDICT_LIST:
 965           /* Skip all lines up to the current.  */
 966           list_line--;
 967           break;
 968         case EDICT_NOLIST:
 969           show_listing--;
 970           break;
 971         case EDICT_NOLIST_NEXT:
 972           if (show_listing == 0)
 973             list_line--;
 974           break;
 975         case EDICT_EJECT:
 976           break;
 977         case EDICT_NONE:
 978           break;
 979         case EDICT_TITLE:
 980           title = list->edict_arg;
 981           break;
 982         case EDICT_SBTTL:
 983           subtitle = list->edict_arg;
 984           break;
 985         default:
 986           abort ();
 987         }
 988
 989       if (show_listing <= 0)
 990         {
 991           while (list->file->linenum < list_line
 992                  && !list->file->at_end)
 993             p = buffer_line (list->file, buffer, width);
 994         }
 995
 996       if (list->edict == EDICT_LIST
 997           || (list->edict == EDICT_NOLIST_NEXT && show_listing == 0))
 998         {
 999           /* Enable listing for the single line that caused the enable.  */
1000           list_line++;
1001           show_listing++;
1002         }
1003
1004       if (show_listing > 0)
1005         {
1006           /* Scan down the list and print all the stuff which can be done
1007              with this line (or lines).  */
1008           message = 0;
1009
1010           if (list->hll_file)
1011             current_hll_file = list->hll_file;
1012
1013           if (current_hll_file && list->hll_line && (listing & LISTING_HLL))
1014             print_source (current_hll_file, list, buffer, width);
1015
1016           if (list->line_contents)
1017             {
1018               if (!((listing & LISTING_NODEBUG)
1019                     && debugging_pseudo (list, list->line_contents)))
1020                 print_lines (list,
1021                              list->file->linenum == 0 ? list->line : list->file->linenum,
1022                              list->line_contents, calc_hex (list));
1023
1024               free (list->line_contents);
1025               list->line_contents = NULL;
1026             }
1027           else
1028             {
1029               while (list->file->linenum < list_line
1030                      && !list->file->at_end)
1031                 {
1032                   unsigned int address;
1033
1034                   p = buffer_line (list->file, buffer, width);
1035
1036                   if (list->file->linenum < list_line)
1037                     address = ~(unsigned int) 0;
1038                   else
1039                     address = calc_hex (list);
1040
1041                   if (!((listing & LISTING_NODEBUG)
1042                         && debugging_pseudo (list, p)))
1043                     print_lines (list, list->file->linenum, p, address);
1044                 }
1045             }
1046
1047           if (list->edict == EDICT_EJECT)
1048             eject = 1;
1049         }
1050
1051       if (list->edict == EDICT_NOLIST_NEXT && show_listing == 1)
1052         --show_listing;
1053
1054       list = list->next;
1055     }
1056
1057   free (buffer);
1058   free (data_buffer);
1059   data_buffer = NULL;
1060 }
1061
1062 /* Print time stamp in ISO format:  yyyy-mm-ddThh:mm:ss.ss+/-zzzz.  */
1063
1064 static void
1065 print_timestamp (void)
1066 {
1067   const time_t now = time (NULL);
1068   struct tm * timestamp;
1069   char stampstr[MAX_DATELEN];
1070
1071   /* Any portable way to obtain subsecond values???  */
1072   timestamp = localtime (&now);
1073   strftime (stampstr, MAX_DATELEN, "%Y-%m-%dT%H:%M:%S.000%z", timestamp);
1074   fprintf (list_file, _("\n time stamp    \t: %s\n\n"), stampstr);
1075 }
1076
1077 static void
1078 print_single_option (char * opt, int *pos)
1079 {
1080   int opt_len = strlen (opt);
1081
1082    if ((*pos + opt_len) < paper_width)
1083      {
1084         fprintf (list_file, _("%s "), opt);
1085         *pos = *pos + opt_len;
1086      }
1087    else
1088      {
1089         fprintf (list_file, _("\n\t%s "), opt);
1090         *pos = opt_len;
1091      }
1092 }
1093
1094 /* Print options passed to as.  */
1095
1096 static void
1097 print_options (char ** argv)
1098 {
1099   const char *field_name = _("\n options passed\t: ");
1100   int pos = strlen (field_name);
1101   char **p;
1102
1103   fprintf (list_file, field_name);
1104   for (p = &argv[1]; *p != NULL; p++)
1105     if (**p == '-')
1106       {
1107         /* Ignore these.  */
1108         if (strcmp (*p, "-o") == 0)
1109           {
1110             if (p[1] != NULL)
1111               p++;
1112             continue;
1113           }
1114         if (strcmp (*p, "-v") == 0)
1115           continue;
1116
1117         print_single_option (*p, &pos);
1118       }
1119 }
1120
1121 /* Print a first section with basic info like file names, as version,
1122    options passed, target, and timestamp.
1123    The format of this section is as follows:
1124
1125    AS VERSION
1126
1127    fieldname TAB ':' fieldcontents
1128   { TAB fieldcontents-cont }  */
1129
1130 static void
1131 listing_general_info (char ** argv)
1132 {
1133   /* Print the stuff on the first line.  */
1134   eject = 1;
1135   listing_page (0);
1136
1137   fprintf (list_file,
1138            _(" GNU assembler version %s (%s)\n\t using BFD version %s."),
1139            VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
1140   print_options (argv);
1141   fprintf (list_file, _("\n input file    \t: %s"), fn);
1142   fprintf (list_file, _("\n output file   \t: %s"), out_file_name);
1143   fprintf (list_file, _("\n target        \t: %s"), TARGET_CANONICAL);
1144   print_timestamp ();
1145 }
1146
1147 void
1148 listing_print (char *name, char **argv)
1149 {
1150   int using_stdout;
1151
1152   title = "";
1153   subtitle = "";
1154
1155   if (name == NULL)
1156     {
1157       list_file = stdout;
1158       using_stdout = 1;
1159     }
1160   else
1161     {
1162       list_file = fopen (name, FOPEN_WT);
1163       if (list_file != NULL)
1164         using_stdout = 0;
1165       else
1166         {
1167           as_warn (_("can't open %s: %s"), name, xstrerror (errno));
1168           list_file = stdout;
1169           using_stdout = 1;
1170         }
1171     }
1172
1173   if (listing & LISTING_NOFORM)
1174     paper_height = 0;
1175
1176   if (listing & LISTING_GENERAL)
1177     listing_general_info (argv);
1178
1179   if (listing & LISTING_LISTING)
1180     listing_listing (name);
1181
1182   if (listing & LISTING_SYMBOLS)
1183     list_symbol_table ();
1184
1185   if (! using_stdout)
1186     {
1187       if (fclose (list_file) == EOF)
1188         as_warn (_("can't close %s: %s"), name, xstrerror (errno));
1189     }
1190
1191   if (last_open_file)
1192     fclose (last_open_file);
1193 }
1194
1195 void
1196 listing_file (const char *name)
1197 {
1198   fn = name;
1199 }
1200
1201 void
1202 listing_eject (int ignore ATTRIBUTE_UNUSED)
1203 {
1204   if (listing)
1205     listing_tail->edict = EDICT_EJECT;
1206 }
1207
1208 void
1209 listing_flags (int ignore ATTRIBUTE_UNUSED)
1210 {
1211   while ((*input_line_pointer++) && (*input_line_pointer != '\n'))
1212     input_line_pointer++;
1213
1214 }
1215
1216 /* Turn listing on or off.  An argument of 0 means to turn off
1217    listing.  An argument of 1 means to turn on listing.  An argument
1218    of 2 means to turn off listing, but as of the next line; that is,
1219    the current line should be listed, but the next line should not.  */
1220
1221 void
1222 listing_list (int on)
1223 {
1224   if (listing)
1225     {
1226       switch (on)
1227         {
1228         case 0:
1229           if (listing_tail->edict == EDICT_LIST)
1230             listing_tail->edict = EDICT_NONE;
1231           else
1232             listing_tail->edict = EDICT_NOLIST;
1233           break;
1234         case 1:
1235           if (listing_tail->edict == EDICT_NOLIST
1236               || listing_tail->edict == EDICT_NOLIST_NEXT)
1237             listing_tail->edict = EDICT_NONE;
1238           else
1239             listing_tail->edict = EDICT_LIST;
1240           break;
1241         case 2:
1242           listing_tail->edict = EDICT_NOLIST_NEXT;
1243           break;
1244         default:
1245           abort ();
1246         }
1247     }
1248 }
1249
1250 void
1251 listing_psize (int width_only)
1252 {
1253   if (! width_only)
1254     {
1255       paper_height = get_absolute_expression ();
1256
1257       if (paper_height < 0 || paper_height > 1000)
1258         {
1259           paper_height = 0;
1260           as_warn (_("strange paper height, set to no form"));
1261         }
1262
1263       if (*input_line_pointer != ',')
1264         {
1265           demand_empty_rest_of_line ();
1266           return;
1267         }
1268
1269       ++input_line_pointer;
1270     }
1271
1272   paper_width = get_absolute_expression ();
1273
1274   demand_empty_rest_of_line ();
1275 }
1276
1277 void
1278 listing_nopage (int ignore ATTRIBUTE_UNUSED)
1279 {
1280   paper_height = 0;
1281 }
1282
1283 void
1284 listing_title (int depth)
1285 {
1286   int quoted;
1287   char *start;
1288   char *ttl;
1289   unsigned int length;
1290
1291   SKIP_WHITESPACE ();
1292   if (*input_line_pointer != '\"')
1293     quoted = 0;
1294   else
1295     {
1296       quoted = 1;
1297       ++input_line_pointer;
1298     }
1299
1300   start = input_line_pointer;
1301
1302   while (*input_line_pointer)
1303     {
1304       if (quoted
1305           ? *input_line_pointer == '\"'
1306           : is_end_of_line[(unsigned char) *input_line_pointer])
1307         {
1308           if (listing)
1309             {
1310               length = input_line_pointer - start;
1311               ttl = xmalloc (length + 1);
1312               memcpy (ttl, start, length);
1313               ttl[length] = 0;
1314               listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE;
1315               listing_tail->edict_arg = ttl;
1316             }
1317           if (quoted)
1318             input_line_pointer++;
1319           demand_empty_rest_of_line ();
1320           return;
1321         }
1322       else if (*input_line_pointer == '\n')
1323         {
1324           as_bad (_("new line in title"));
1325           demand_empty_rest_of_line ();
1326           return;
1327         }
1328       else
1329         {
1330           input_line_pointer++;
1331         }
1332     }
1333 }
1334
1335 void
1336 listing_source_line (unsigned int line)
1337 {
1338   if (listing)
1339     {
1340       new_frag ();
1341       listing_tail->hll_line = line;
1342       new_frag ();
1343     }
1344 }
1345
1346 void
1347 listing_source_file (const char *file)
1348 {
1349   if (listing)
1350     listing_tail->hll_file = file_info (file);
1351 }
1352
1353 #else
1354
1355 /* Dummy functions for when compiled without listing enabled.  */
1356
1357 void
1358 listing_flags (int ignore)
1359 {
1360   s_ignore (0);
1361 }
1362
1363 void
1364 listing_list (int on)
1365 {
1366   s_ignore (0);
1367 }
1368
1369 void
1370 listing_eject (int ignore)
1371 {
1372   s_ignore (0);
1373 }
1374
1375 void
1376 listing_psize (int ignore)
1377 {
1378   s_ignore (0);
1379 }
1380
1381 void
1382 listing_nopage (int ignore)
1383 {
1384   s_ignore (0);
1385 }
1386
1387 void
1388 listing_title (int depth)
1389 {
1390   s_ignore (0);
1391 }
1392
1393 void
1394 listing_file (const char *name)
1395 {
1396 }
1397
1398 void
1399 listing_newline (char *name)
1400 {
1401 }
1402
1403 void
1404 listing_source_line (unsigned int n)
1405 {
1406 }
1407
1408 void
1409 listing_source_file (const char *n)
1410 {
1411 }
1412
1413 #endif