1 /* listing.c - maintain assembly listings 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2005 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 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 236 listing_warning (const char *message) 237 { 238 listing_message (_("Warning:"), message); 239 } 240 241 void 242 listing_error (const char *message) 243 { 244 listing_message (_("Error:"), message); 245 } 246 247 static file_info_type * 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 273 new_frag (void) 274 { 275 frag_wane (frag_now); 276 frag_new (0); 277 } 278 279 void 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 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 * 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 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 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 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 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 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 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 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; 950 951 while (list != (list_info_type *) NULL && 0) 952 { 953 if (list->next) 954 list->frag = list->next->frag; 955 list = list->next; 956 } 957 958 list = head->next; 959 960 while (list) 961 { 962 unsigned int list_line; 963 964 width = listing_rhs_width > paper_width ? paper_width : 965 listing_rhs_width; 966 967 list_line = list->line; 968 switch (list->edict) 969 { 970 case EDICT_LIST: 971 /* Skip all lines up to the current. */ 972 list_line--; 973 break; 974 case EDICT_NOLIST: 975 show_listing--; 976 break; 977 case EDICT_NOLIST_NEXT: 978 if (show_listing == 0) 979 list_line--; 980 break; 981 case EDICT_EJECT: 982 break; 983 case EDICT_NONE: 984 break; 985 case EDICT_TITLE: 986 title = list->edict_arg; 987 break; 988 case EDICT_SBTTL: 989 subtitle = list->edict_arg; 990 break; 991 default: 992 abort (); 993 } 994 995 if (show_listing <= 0) 996 { 997 while (list->file->linenum < list_line 998 && !list->file->at_end) 999 p = buffer_line (list->file, buffer, width); 1000 } 1001 1002 if (list->edict == EDICT_LIST 1003 || (list->edict == EDICT_NOLIST_NEXT && show_listing == 0)) 1004 { 1005 /* Enable listing for the single line that caused the enable. */ 1006 list_line++; 1007 show_listing++; 1008 } 1009 1010 if (show_listing > 0) 1011 { 1012 /* Scan down the list and print all the stuff which can be done 1013 with this line (or lines). */ 1014 message = 0; 1015 1016 if (list->hll_file) 1017 current_hll_file = list->hll_file; 1018 1019 if (current_hll_file && list->hll_line && (listing & LISTING_HLL)) 1020 print_source (current_hll_file, list, buffer, width); 1021 1022 if (list->line_contents) 1023 { 1024 if (!((listing & LISTING_NODEBUG) 1025 && debugging_pseudo (list, list->line_contents))) 1026 print_lines (list, 1027 list->file->linenum == 0 ? list->line : list->file->linenum, 1028 list->line_contents, calc_hex (list)); 1029 1030 free (list->line_contents); 1031 list->line_contents = NULL; 1032 } 1033 else 1034 { 1035 while (list->file->linenum < list_line 1036 && !list->file->at_end) 1037 { 1038 unsigned int address; 1039 1040 p = buffer_line (list->file, buffer, width); 1041 1042 if (list->file->linenum < list_line) 1043 address = ~(unsigned int) 0; 1044 else 1045 address = calc_hex (list); 1046 1047 if (!((listing & LISTING_NODEBUG) 1048 && debugging_pseudo (list, p))) 1049 print_lines (list, list->file->linenum, p, address); 1050 } 1051 } 1052 1053 if (list->edict == EDICT_EJECT) 1054 eject = 1; 1055 } 1056 1057 if (list->edict == EDICT_NOLIST_NEXT && show_listing == 1) 1058 --show_listing; 1059 1060 list = list->next; 1061 } 1062 1063 free (buffer); 1064 free (data_buffer); 1065 data_buffer = NULL; 1066 } 1067 1068 void 1069 listing_print (char *name) 1070 { 1071 int using_stdout; 1072 1073 title = ""; 1074 subtitle = ""; 1075 1076 if (name == NULL) 1077 { 1078 list_file = stdout; 1079 using_stdout = 1; 1080 } 1081 else 1082 { 1083 list_file = fopen (name, FOPEN_WT); 1084 if (list_file != NULL) 1085 using_stdout = 0; 1086 else 1087 { 1088 bfd_set_error (bfd_error_system_call); 1089 as_perror (_("can't open list file: %s"), name); 1090 list_file = stdout; 1091 using_stdout = 1; 1092 } 1093 } 1094 1095 if (listing & LISTING_NOFORM) 1096 paper_height = 0; 1097 1098 if (listing & LISTING_LISTING) 1099 listing_listing (name); 1100 1101 if (listing & LISTING_SYMBOLS) 1102 list_symbol_table (); 1103 1104 if (! using_stdout) 1105 { 1106 if (fclose (list_file) == EOF) 1107 { 1108 bfd_set_error (bfd_error_system_call); 1109 as_perror (_("error closing list file: %s"), name); 1110 } 1111 } 1112 1113 if (last_open_file) 1114 fclose (last_open_file); 1115 } 1116 1117 void 1118 listing_file (const char *name) 1119 { 1120 fn = name; 1121 } 1122 1123 void 1124 listing_eject (int ignore ATTRIBUTE_UNUSED) 1125 { 1126 if (listing) 1127 listing_tail->edict = EDICT_EJECT; 1128 } 1129 1130 void 1131 listing_flags (int ignore ATTRIBUTE_UNUSED) 1132 { 1133 while ((*input_line_pointer++) && (*input_line_pointer != '\n')) 1134 input_line_pointer++; 1135 1136 } 1137 1138 /* Turn listing on or off. An argument of 0 means to turn off 1139 listing. An argument of 1 means to turn on listing. An argument 1140 of 2 means to turn off listing, but as of the next line; that is, 1141 the current line should be listed, but the next line should not. */ 1142 1143 void 1144 listing_list (int on) 1145 { 1146 if (listing) 1147 { 1148 switch (on) 1149 { 1150 case 0: 1151 if (listing_tail->edict == EDICT_LIST) 1152 listing_tail->edict = EDICT_NONE; 1153 else 1154 listing_tail->edict = EDICT_NOLIST; 1155 break; 1156 case 1: 1157 if (listing_tail->edict == EDICT_NOLIST 1158 || listing_tail->edict == EDICT_NOLIST_NEXT) 1159 listing_tail->edict = EDICT_NONE; 1160 else 1161 listing_tail->edict = EDICT_LIST; 1162 break; 1163 case 2: 1164 listing_tail->edict = EDICT_NOLIST_NEXT; 1165 break; 1166 default: 1167 abort (); 1168 } 1169 } 1170 } 1171 1172 void 1173 listing_psize (int width_only) 1174 { 1175 if (! width_only) 1176 { 1177 paper_height = get_absolute_expression (); 1178 1179 if (paper_height < 0 || paper_height > 1000) 1180 { 1181 paper_height = 0; 1182 as_warn (_("strange paper height, set to no form")); 1183 } 1184 1185 if (*input_line_pointer != ',') 1186 { 1187 demand_empty_rest_of_line (); 1188 return; 1189 } 1190 1191 ++input_line_pointer; 1192 } 1193 1194 paper_width = get_absolute_expression (); 1195 1196 demand_empty_rest_of_line (); 1197 } 1198 1199 void 1200 listing_nopage (int ignore ATTRIBUTE_UNUSED) 1201 { 1202 paper_height = 0; 1203 } 1204 1205 void 1206 listing_title (int depth) 1207 { 1208 int quoted; 1209 char *start; 1210 char *ttl; 1211 unsigned int length; 1212 1213 SKIP_WHITESPACE (); 1214 if (*input_line_pointer != '\"') 1215 quoted = 0; 1216 else 1217 { 1218 quoted = 1; 1219 ++input_line_pointer; 1220 } 1221 1222 start = input_line_pointer; 1223 1224 while (*input_line_pointer) 1225 { 1226 if (quoted 1227 ? *input_line_pointer == '\"' 1228 : is_end_of_line[(unsigned char) *input_line_pointer]) 1229 { 1230 if (listing) 1231 { 1232 length = input_line_pointer - start; 1233 ttl = xmalloc (length + 1); 1234 memcpy (ttl, start, length); 1235 ttl[length] = 0; 1236 listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE; 1237 listing_tail->edict_arg = ttl; 1238 } 1239 if (quoted) 1240 input_line_pointer++; 1241 demand_empty_rest_of_line (); 1242 return; 1243 } 1244 else if (*input_line_pointer == '\n') 1245 { 1246 as_bad (_("new line in title")); 1247 demand_empty_rest_of_line (); 1248 return; 1249 } 1250 else 1251 { 1252 input_line_pointer++; 1253 } 1254 } 1255 } 1256 1257 void 1258 listing_source_line (unsigned int line) 1259 { 1260 if (listing) 1261 { 1262 new_frag (); 1263 listing_tail->hll_line = line; 1264 new_frag (); 1265 } 1266 } 1267 1268 void 1269 listing_source_file (const char *file) 1270 { 1271 if (listing) 1272 listing_tail->hll_file = file_info (file); 1273 } 1274 1275 #else 1276 1277 /* Dummy functions for when compiled without listing enabled. */ 1278 1279 void 1280 listing_flags (int ignore) 1281 { 1282 s_ignore (0); 1283 } 1284 1285 void 1286 listing_list (int on) 1287 { 1288 s_ignore (0); 1289 } 1290 1291 void 1292 listing_eject (int ignore) 1293 { 1294 s_ignore (0); 1295 } 1296 1297 void 1298 listing_psize (int ignore) 1299 { 1300 s_ignore (0); 1301 } 1302 1303 void 1304 listing_nopage (int ignore) 1305 { 1306 s_ignore (0); 1307 } 1308 1309 void 1310 listing_title (int depth) 1311 { 1312 s_ignore (0); 1313 } 1314 1315 void 1316 listing_file (const char *name) 1317 { 1318 } 1319 1320 void 1321 listing_newline (char *name) 1322 { 1323 } 1324 1325 void 1326 listing_source_line (unsigned int n) 1327 { 1328 } 1329 1330 void 1331 listing_source_file (const char *n) 1332 { 1333 } 1334 1335 #endif 1336