[sim] Run spellcheck.sh in sim (part 2)
[binutils-gdb.git] / binutils / objdump.c
blob4980929d6abb71a9119e3833da77969a83e63a8f
1 /* objdump.c -- dump information about an object file.
2 Copyright (C) 1990-2024 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
22 /* Objdump overview.
24 Objdump displays information about one or more object files, either on
25 their own, or inside libraries. It is commonly used as a disassembler,
26 but it can also display information about file headers, symbol tables,
27 relocations, debugging directives and more.
29 The flow of execution is as follows:
31 1. Command line arguments are checked for control switches and the
32 information to be displayed is selected.
34 2. Any remaining arguments are assumed to be object files, and they are
35 processed in order by display_bfd(). If the file is an archive each
36 of its elements is processed in turn.
38 3. The file's target architecture and binary file format are determined
39 by bfd_check_format(). If they are recognised, then dump_bfd() is
40 called.
42 4. dump_bfd() in turn calls separate functions to display the requested
43 item(s) of information(s). For example disassemble_data() is called if
44 a disassembly has been requested.
46 When disassembling the code loops through blocks of instructions bounded
47 by symbols, calling disassemble_bytes() on each block. The actual
48 disassembling is done by the libopcodes library, via a function pointer
49 supplied by the disassembler() function. */
51 #include "sysdep.h"
52 #include "bfd.h"
53 #include "elf-bfd.h"
54 #include "coff-bfd.h"
55 #include "bucomm.h"
56 #include "elfcomm.h"
57 #include "demanguse.h"
58 #include "dwarf.h"
59 #include "ctf-api.h"
60 #include "sframe-api.h"
61 #include "getopt.h"
62 #include "safe-ctype.h"
63 #include "dis-asm.h"
64 #include "libiberty.h"
65 #include "demangle.h"
66 #include "filenames.h"
67 #include "debug.h"
68 #include "budbg.h"
69 #include "objdump.h"
71 #ifdef HAVE_MMAP
72 #include <sys/mman.h>
73 #endif
75 #ifdef HAVE_LIBDEBUGINFOD
76 #include <elfutils/debuginfod.h>
77 #endif
79 /* Internal headers for the ELF .stab-dump code - sorry. */
80 #define BYTES_IN_WORD 32
81 #include "aout/aout64.h"
83 /* Exit status. */
84 static int exit_status = 0;
86 static char *default_target = NULL; /* Default at runtime. */
88 /* The following variables are set based on arguments passed on the
89 command line. */
90 static int show_version = 0; /* Show the version number. */
91 static int dump_section_contents; /* -s */
92 static int dump_section_headers; /* -h */
93 static bool dump_file_header; /* -f */
94 static int dump_symtab; /* -t */
95 static int dump_dynamic_symtab; /* -T */
96 static int dump_reloc_info; /* -r */
97 static int dump_dynamic_reloc_info; /* -R */
98 static int dump_ar_hdrs; /* -a */
99 static int dump_private_headers; /* -p */
100 static char *dump_private_options; /* -P */
101 static int no_addresses; /* --no-addresses */
102 static int prefix_addresses; /* --prefix-addresses */
103 static int with_line_numbers; /* -l */
104 static bool with_source_code; /* -S */
105 static int show_raw_insn; /* --show-raw-insn */
106 static int dump_dwarf_section_info; /* --dwarf */
107 static int dump_stab_section_info; /* --stabs */
108 static int dump_ctf_section_info; /* --ctf */
109 static char *dump_ctf_section_name;
110 static char *dump_ctf_parent_name; /* --ctf-parent */
111 static char *dump_ctf_parent_section_name; /* --ctf-parent-section */
112 static int dump_sframe_section_info; /* --sframe */
113 static char *dump_sframe_section_name;
114 static int do_demangle; /* -C, --demangle */
115 static bool disassemble; /* -d */
116 static bool disassemble_all; /* -D */
117 static int disassemble_zeroes; /* --disassemble-zeroes */
118 static bool formats_info; /* -i */
119 int wide_output; /* -w */
120 static int insn_width; /* --insn-width */
121 static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
122 static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
123 static int dump_debugging; /* --debugging */
124 static int dump_debugging_tags; /* --debugging-tags */
125 static int suppress_bfd_header;
126 static int dump_special_syms = 0; /* --special-syms */
127 static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
128 static int file_start_context = 0; /* --file-start-context */
129 static bool display_file_offsets; /* -F */
130 static const char *prefix; /* --prefix */
131 static int prefix_strip; /* --prefix-strip */
132 static size_t prefix_length;
133 static bool unwind_inlines; /* --inlines. */
134 static const char * disasm_sym; /* Disassembly start symbol. */
135 static const char * source_comment; /* --source_comment. */
136 static bool visualize_jumps = false; /* --visualize-jumps. */
137 static bool color_output = false; /* --visualize-jumps=color. */
138 static bool extended_color_output = false; /* --visualize-jumps=extended-color. */
139 static int process_links = false; /* --process-links. */
140 static int show_all_symbols; /* --show-all-symbols. */
141 static bool decompressed_dumps = false; /* -Z, --decompress. */
143 static enum color_selection
145 on_if_terminal_output,
146 on, /* --disassembler-color=color. */
147 off, /* --disassembler-color=off. */
148 extended /* --disassembler-color=extended-color. */
149 } disassembler_color =
150 #if DEFAULT_FOR_COLORED_DISASSEMBLY
151 on_if_terminal_output;
152 #else
153 off;
154 #endif
156 static int dump_any_debugging;
157 static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
159 /* This is reset to false each time we enter the disassembler, and set true
160 when the disassembler emits something in the dis_style_comment_start
161 style. Once this is true, all further output on that line is done in
162 the comment style. This only has an effect when disassembler coloring
163 is turned on. */
164 static bool disassembler_in_comment = false;
166 /* A structure to record the sections mentioned in -j switches. */
167 struct only
169 const char *name; /* The name of the section. */
170 bool seen; /* A flag to indicate that the section has been found in one or more input files. */
171 struct only *next; /* Pointer to the next structure in the list. */
173 /* Pointer to an array of 'only' structures.
174 This pointer is NULL if the -j switch has not been used. */
175 static struct only * only_list = NULL;
177 /* Variables for handling include file path table. */
178 static const char **include_paths;
179 static int include_path_count;
181 /* Extra info to pass to the section disassembler and address printing
182 function. */
183 struct objdump_disasm_info
185 bfd *abfd;
186 bool require_sec;
187 disassembler_ftype disassemble_fn;
188 arelent *reloc;
189 const char *symbol;
192 /* Architecture to disassemble for, or default if NULL. */
193 static char *machine = NULL;
195 /* Target specific options to the disassembler. */
196 static char *disassembler_options = NULL;
198 /* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
199 static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
201 /* The symbol table. */
202 static asymbol **syms;
204 /* Number of symbols in `syms'. */
205 static long symcount = 0;
207 /* The sorted symbol table. */
208 static asymbol **sorted_syms;
210 /* Number of symbols in `sorted_syms'. */
211 static long sorted_symcount = 0;
213 /* The dynamic symbol table. */
214 static asymbol **dynsyms;
216 /* The synthetic symbol table. */
217 static asymbol *synthsyms;
218 static long synthcount = 0;
220 /* Number of symbols in `dynsyms'. */
221 static long dynsymcount = 0;
223 static bfd_byte *stabs;
224 static bfd_size_type stab_size;
226 static bfd_byte *strtab;
227 static bfd_size_type stabstr_size;
229 /* Handlers for -P/--private. */
230 static const struct objdump_private_desc * const objdump_private_vectors[] =
232 OBJDUMP_PRIVATE_VECTORS
233 NULL
236 /* The list of detected jumps inside a function. */
237 static struct jump_info *detected_jumps = NULL;
239 typedef enum unicode_display_type
241 unicode_default = 0,
242 unicode_locale,
243 unicode_escape,
244 unicode_hex,
245 unicode_highlight,
246 unicode_invalid
247 } unicode_display_type;
249 static unicode_display_type unicode_display = unicode_default;
251 static void usage (FILE *, int) ATTRIBUTE_NORETURN;
252 static void
253 usage (FILE *stream, int status)
255 fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
256 fprintf (stream, _(" Display information from object <file(s)>.\n"));
257 fprintf (stream, _(" At least one of the following switches must be given:\n"));
258 fprintf (stream, _("\
259 -a, --archive-headers Display archive header information\n"));
260 fprintf (stream, _("\
261 -f, --file-headers Display the contents of the overall file header\n"));
262 fprintf (stream, _("\
263 -p, --private-headers Display object format specific file header contents\n"));
264 fprintf (stream, _("\
265 -P, --private=OPT,OPT... Display object format specific contents\n"));
266 fprintf (stream, _("\
267 -h, --[section-]headers Display the contents of the section headers\n"));
268 fprintf (stream, _("\
269 -x, --all-headers Display the contents of all headers\n"));
270 fprintf (stream, _("\
271 -d, --disassemble Display assembler contents of executable sections\n"));
272 fprintf (stream, _("\
273 -D, --disassemble-all Display assembler contents of all sections\n"));
274 fprintf (stream, _("\
275 --disassemble=<sym> Display assembler contents from <sym>\n"));
276 fprintf (stream, _("\
277 -S, --source Intermix source code with disassembly\n"));
278 fprintf (stream, _("\
279 --source-comment[=<txt>] Prefix lines of source code with <txt>\n"));
280 fprintf (stream, _("\
281 -s, --full-contents Display the full contents of all sections requested\n"));
282 fprintf (stream, _("\
283 -Z, --decompress Decompress section(s) before displaying their contents\n"));
284 fprintf (stream, _("\
285 -g, --debugging Display debug information in object file\n"));
286 fprintf (stream, _("\
287 -e, --debugging-tags Display debug information using ctags style\n"));
288 fprintf (stream, _("\
289 -G, --stabs Display (in raw form) any STABS info in the file\n"));
290 fprintf (stream, _("\
291 -W, --dwarf[a/=abbrev, A/=addr, r/=aranges, c/=cu_index, L/=decodedline,\n\
292 f/=frames, F/=frames-interp, g/=gdb_index, i/=info, o/=loc,\n\
293 m/=macro, p/=pubnames, t/=pubtypes, R/=Ranges, l/=rawline,\n\
294 s/=str, O/=str-offsets, u/=trace_abbrev, T/=trace_aranges,\n\
295 U/=trace_info]\n\
296 Display the contents of DWARF debug sections\n"));
297 fprintf (stream, _("\
298 -Wk,--dwarf=links Display the contents of sections that link to\n\
299 separate debuginfo files\n"));
300 #if DEFAULT_FOR_FOLLOW_LINKS
301 fprintf (stream, _("\
302 -WK,--dwarf=follow-links\n\
303 Follow links to separate debug info files (default)\n"));
304 fprintf (stream, _("\
305 -WN,--dwarf=no-follow-links\n\
306 Do not follow links to separate debug info files\n"));
307 #else
308 fprintf (stream, _("\
309 -WK,--dwarf=follow-links\n\
310 Follow links to separate debug info files\n"));
311 fprintf (stream, _("\
312 -WN,--dwarf=no-follow-links\n\
313 Do not follow links to separate debug info files\n\
314 (default)\n"));
315 #endif
316 #if HAVE_LIBDEBUGINFOD
317 fprintf (stream, _("\
318 -WD --dwarf=use-debuginfod\n\
319 When following links, also query debuginfod servers (default)\n"));
320 fprintf (stream, _("\
321 -WE --dwarf=do-not-use-debuginfod\n\
322 When following links, do not query debuginfod servers\n"));
323 #endif
324 fprintf (stream, _("\
325 -L, --process-links Display the contents of non-debug sections in\n\
326 separate debuginfo files. (Implies -WK)\n"));
327 #ifdef ENABLE_LIBCTF
328 fprintf (stream, _("\
329 --ctf[=SECTION] Display CTF info from SECTION, (default `.ctf')\n"));
330 #endif
331 fprintf (stream, _("\
332 --sframe[=SECTION] Display SFrame info from SECTION, (default '.sframe')\n"));
333 fprintf (stream, _("\
334 -t, --syms Display the contents of the symbol table(s)\n"));
335 fprintf (stream, _("\
336 -T, --dynamic-syms Display the contents of the dynamic symbol table\n"));
337 fprintf (stream, _("\
338 -r, --reloc Display the relocation entries in the file\n"));
339 fprintf (stream, _("\
340 -R, --dynamic-reloc Display the dynamic relocation entries in the file\n"));
341 fprintf (stream, _("\
342 @<file> Read options from <file>\n"));
343 fprintf (stream, _("\
344 -v, --version Display this program's version number\n"));
345 fprintf (stream, _("\
346 -i, --info List object formats and architectures supported\n"));
347 fprintf (stream, _("\
348 -H, --help Display this information\n"));
350 if (status != 2)
352 const struct objdump_private_desc * const *desc;
354 fprintf (stream, _("\n The following switches are optional:\n"));
355 fprintf (stream, _("\
356 -b, --target=BFDNAME Specify the target object format as BFDNAME\n"));
357 fprintf (stream, _("\
358 -m, --architecture=MACHINE Specify the target architecture as MACHINE\n"));
359 fprintf (stream, _("\
360 -j, --section=NAME Only display information for section NAME\n"));
361 fprintf (stream, _("\
362 -M, --disassembler-options=OPT Pass text OPT on to the disassembler\n"));
363 fprintf (stream, _("\
364 -EB --endian=big Assume big endian format when disassembling\n"));
365 fprintf (stream, _("\
366 -EL --endian=little Assume little endian format when disassembling\n"));
367 fprintf (stream, _("\
368 --file-start-context Include context from start of file (with -S)\n"));
369 fprintf (stream, _("\
370 -I, --include=DIR Add DIR to search list for source files\n"));
371 fprintf (stream, _("\
372 -l, --line-numbers Include line numbers and filenames in output\n"));
373 fprintf (stream, _("\
374 -F, --file-offsets Include file offsets when displaying information\n"));
375 fprintf (stream, _("\
376 -C, --demangle[=STYLE] Decode mangled/processed symbol names\n"));
377 display_demangler_styles (stream, _("\
378 STYLE can be "));
379 fprintf (stream, _("\
380 --recurse-limit Enable a limit on recursion whilst demangling\n\
381 (default)\n"));
382 fprintf (stream, _("\
383 --no-recurse-limit Disable a limit on recursion whilst demangling\n"));
384 fprintf (stream, _("\
385 -w, --wide Format output for more than 80 columns\n"));
386 fprintf (stream, _("\
387 -U[d|l|i|x|e|h] Controls the display of UTF-8 unicode characters\n\
388 --unicode=[default|locale|invalid|hex|escape|highlight]\n"));
389 fprintf (stream, _("\
390 -z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n"));
391 fprintf (stream, _("\
392 --start-address=ADDR Only process data whose address is >= ADDR\n"));
393 fprintf (stream, _("\
394 --stop-address=ADDR Only process data whose address is < ADDR\n"));
395 fprintf (stream, _("\
396 --no-addresses Do not print address alongside disassembly\n"));
397 fprintf (stream, _("\
398 --prefix-addresses Print complete address alongside disassembly\n"));
399 fprintf (stream, _("\
400 --[no-]show-raw-insn Display hex alongside symbolic disassembly\n"));
401 fprintf (stream, _("\
402 --insn-width=WIDTH Display WIDTH bytes on a single line for -d\n"));
403 fprintf (stream, _("\
404 --adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n"));
405 fprintf (stream, _("\
406 --show-all-symbols When disassembling, display all symbols at a given address\n"));
407 fprintf (stream, _("\
408 --special-syms Include special symbols in symbol dumps\n"));
409 fprintf (stream, _("\
410 --inlines Print all inlines for source line (with -l)\n"));
411 fprintf (stream, _("\
412 --prefix=PREFIX Add PREFIX to absolute paths for -S\n"));
413 fprintf (stream, _("\
414 --prefix-strip=LEVEL Strip initial directory names for -S\n"));
415 fprintf (stream, _("\
416 --dwarf-depth=N Do not display DIEs at depth N or greater\n"));
417 fprintf (stream, _("\
418 --dwarf-start=N Display DIEs starting at offset N\n"));
419 fprintf (stream, _("\
420 --dwarf-check Make additional dwarf consistency checks.\n"));
421 #ifdef ENABLE_LIBCTF
422 fprintf (stream, _("\
423 --ctf-parent=NAME Use CTF archive member NAME as the CTF parent\n"));
424 #endif
425 fprintf (stream, _("\
426 --visualize-jumps Visualize jumps by drawing ASCII art lines\n"));
427 fprintf (stream, _("\
428 --visualize-jumps=color Use colors in the ASCII art\n"));
429 fprintf (stream, _("\
430 --visualize-jumps=extended-color\n\
431 Use extended 8-bit color codes\n"));
432 fprintf (stream, _("\
433 --visualize-jumps=off Disable jump visualization\n"));
434 #if DEFAULT_FOR_COLORED_DISASSEMBLY
435 fprintf (stream, _("\
436 --disassembler-color=off Disable disassembler color output.\n"));
437 fprintf (stream, _("\
438 --disassembler-color=terminal Enable disassembler color output if displaying on a terminal. (default)\n"));
439 #else
440 fprintf (stream, _("\
441 --disassembler-color=off Disable disassembler color output. (default)\n"));
442 fprintf (stream, _("\
443 --disassembler-color=terminal Enable disassembler color output if displaying on a terminal.\n"));
444 #endif
445 fprintf (stream, _("\
446 --disassembler-color=on Enable disassembler color output.\n"));
447 fprintf (stream, _("\
448 --disassembler-color=extended Use 8-bit colors in disassembler output.\n\n"));
450 list_supported_targets (program_name, stream);
451 list_supported_architectures (program_name, stream);
453 disassembler_usage (stream);
455 if (objdump_private_vectors[0] != NULL)
457 fprintf (stream,
458 _("\nOptions supported for -P/--private switch:\n"));
459 for (desc = objdump_private_vectors; *desc != NULL; desc++)
460 (*desc)->help (stream);
463 if (REPORT_BUGS_TO[0] && status == 0)
464 fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
465 exit (status);
468 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
469 enum option_values
471 OPTION_ENDIAN=150,
472 OPTION_START_ADDRESS,
473 OPTION_STOP_ADDRESS,
474 OPTION_DWARF,
475 OPTION_PREFIX,
476 OPTION_PREFIX_STRIP,
477 OPTION_INSN_WIDTH,
478 OPTION_ADJUST_VMA,
479 OPTION_DWARF_DEPTH,
480 OPTION_DWARF_CHECK,
481 OPTION_DWARF_START,
482 OPTION_RECURSE_LIMIT,
483 OPTION_NO_RECURSE_LIMIT,
484 OPTION_INLINES,
485 OPTION_SOURCE_COMMENT,
486 #ifdef ENABLE_LIBCTF
487 OPTION_CTF,
488 OPTION_CTF_PARENT,
489 OPTION_CTF_PARENT_SECTION,
490 #endif
491 OPTION_SFRAME,
492 OPTION_VISUALIZE_JUMPS,
493 OPTION_DISASSEMBLER_COLOR
496 static struct option long_options[]=
498 {"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
499 {"all-headers", no_argument, NULL, 'x'},
500 {"architecture", required_argument, NULL, 'm'},
501 {"archive-headers", no_argument, NULL, 'a'},
502 #ifdef ENABLE_LIBCTF
503 {"ctf", optional_argument, NULL, OPTION_CTF},
504 {"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
505 {"ctf-parent-section", required_argument, NULL, OPTION_CTF_PARENT_SECTION},
506 #endif
507 {"debugging", no_argument, NULL, 'g'},
508 {"debugging-tags", no_argument, NULL, 'e'},
509 {"decompress", no_argument, NULL, 'Z'},
510 {"demangle", optional_argument, NULL, 'C'},
511 {"disassemble", optional_argument, NULL, 'd'},
512 {"disassemble-all", no_argument, NULL, 'D'},
513 {"disassemble-zeroes", no_argument, NULL, 'z'},
514 {"disassembler-options", required_argument, NULL, 'M'},
515 {"dwarf", optional_argument, NULL, OPTION_DWARF},
516 {"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
517 {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
518 {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
519 {"dynamic-reloc", no_argument, NULL, 'R'},
520 {"dynamic-syms", no_argument, NULL, 'T'},
521 {"endian", required_argument, NULL, OPTION_ENDIAN},
522 {"file-headers", no_argument, NULL, 'f'},
523 {"file-offsets", no_argument, NULL, 'F'},
524 {"file-start-context", no_argument, &file_start_context, 1},
525 {"full-contents", no_argument, NULL, 's'},
526 {"headers", no_argument, NULL, 'h'},
527 {"help", no_argument, NULL, 'H'},
528 {"include", required_argument, NULL, 'I'},
529 {"info", no_argument, NULL, 'i'},
530 {"inlines", no_argument, 0, OPTION_INLINES},
531 {"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
532 {"line-numbers", no_argument, NULL, 'l'},
533 {"no-addresses", no_argument, &no_addresses, 1},
534 {"no-recurse-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
535 {"no-recursion-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
536 {"no-show-raw-insn", no_argument, &show_raw_insn, -1},
537 {"prefix", required_argument, NULL, OPTION_PREFIX},
538 {"prefix-addresses", no_argument, &prefix_addresses, 1},
539 {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
540 {"private", required_argument, NULL, 'P'},
541 {"private-headers", no_argument, NULL, 'p'},
542 {"process-links", no_argument, &process_links, true},
543 {"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
544 {"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
545 {"reloc", no_argument, NULL, 'r'},
546 {"section", required_argument, NULL, 'j'},
547 {"section-headers", no_argument, NULL, 'h'},
548 {"sframe", optional_argument, NULL, OPTION_SFRAME},
549 {"show-all-symbols", no_argument, &show_all_symbols, 1},
550 {"show-raw-insn", no_argument, &show_raw_insn, 1},
551 {"source", no_argument, NULL, 'S'},
552 {"source-comment", optional_argument, NULL, OPTION_SOURCE_COMMENT},
553 {"special-syms", no_argument, &dump_special_syms, 1},
554 {"stabs", no_argument, NULL, 'G'},
555 {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
556 {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
557 {"syms", no_argument, NULL, 't'},
558 {"target", required_argument, NULL, 'b'},
559 {"unicode", required_argument, NULL, 'U'},
560 {"version", no_argument, NULL, 'V'},
561 {"visualize-jumps", optional_argument, 0, OPTION_VISUALIZE_JUMPS},
562 {"wide", no_argument, NULL, 'w'},
563 {"disassembler-color", required_argument, NULL, OPTION_DISASSEMBLER_COLOR},
564 {NULL, no_argument, NULL, 0}
567 static void
568 my_bfd_nonfatal (const char *msg)
570 bfd_nonfatal (msg);
571 exit_status = 1;
574 /* Convert a potential UTF-8 encoded sequence in IN into characters in OUT.
575 The conversion format is controlled by the unicode_display variable.
576 Returns the number of characters added to OUT.
577 Returns the number of bytes consumed from IN in CONSUMED.
578 Always consumes at least one byte and displays at least one character. */
580 static unsigned int
581 display_utf8 (const unsigned char * in, char * out, unsigned int * consumed)
583 char * orig_out = out;
584 unsigned int nchars = 0;
585 unsigned int j;
587 if (unicode_display == unicode_default)
588 goto invalid;
590 if (in[0] < 0xc0)
591 goto invalid;
593 if ((in[1] & 0xc0) != 0x80)
594 goto invalid;
596 if ((in[0] & 0x20) == 0)
598 nchars = 2;
599 goto valid;
602 if ((in[2] & 0xc0) != 0x80)
603 goto invalid;
605 if ((in[0] & 0x10) == 0)
607 nchars = 3;
608 goto valid;
611 if ((in[3] & 0xc0) != 0x80)
612 goto invalid;
614 nchars = 4;
616 valid:
617 switch (unicode_display)
619 case unicode_locale:
620 /* Copy the bytes into the output buffer as is. */
621 memcpy (out, in, nchars);
622 out += nchars;
623 break;
625 case unicode_invalid:
626 case unicode_hex:
627 *out++ = unicode_display == unicode_hex ? '<' : '{';
628 *out++ = '0';
629 *out++ = 'x';
630 for (j = 0; j < nchars; j++)
631 out += sprintf (out, "%02x", in [j]);
632 *out++ = unicode_display == unicode_hex ? '>' : '}';
633 break;
635 case unicode_highlight:
636 if (isatty (1))
637 out += sprintf (out, "\x1B[31;47m"); /* Red. */
638 /* Fall through. */
639 case unicode_escape:
640 switch (nchars)
642 case 2:
643 out += sprintf (out, "\\u%02x%02x",
644 ((in[0] & 0x1c) >> 2),
645 ((in[0] & 0x03) << 6) | (in[1] & 0x3f));
646 break;
648 case 3:
649 out += sprintf (out, "\\u%02x%02x",
650 ((in[0] & 0x0f) << 4) | ((in[1] & 0x3c) >> 2),
651 ((in[1] & 0x03) << 6) | ((in[2] & 0x3f)));
652 break;
654 case 4:
655 out += sprintf (out, "\\u%02x%02x%02x",
656 ((in[0] & 0x07) << 6) | ((in[1] & 0x3c) >> 2),
657 ((in[1] & 0x03) << 6) | ((in[2] & 0x3c) >> 2),
658 ((in[2] & 0x03) << 6) | ((in[3] & 0x3f)));
659 break;
660 default:
661 /* URG. */
662 break;
665 if (unicode_display == unicode_highlight && isatty (1))
666 out += sprintf (out, "\x1B[0m"); /* Default colour. */
667 break;
669 default:
670 /* URG */
671 break;
674 * consumed = nchars;
675 return out - orig_out;
677 invalid:
678 /* Not a valid UTF-8 sequence. */
679 *out = *in;
680 * consumed = 1;
681 return 1;
684 /* Returns a version of IN with any control characters
685 replaced by escape sequences. Uses a static buffer
686 if necessary.
688 If unicode display is enabled, then also handles the
689 conversion of unicode characters. */
691 static const char *
692 sanitize_string (const char * in)
694 static char * buffer = NULL;
695 static size_t buffer_len = 0;
696 const char * original = in;
697 char * out;
699 /* Paranoia. */
700 if (in == NULL)
701 return "";
703 /* See if any conversion is necessary. In the majority
704 of cases it will not be needed. */
707 unsigned char c = *in++;
709 if (c == 0)
710 return original;
712 if (ISCNTRL (c))
713 break;
715 if (unicode_display != unicode_default && c >= 0xc0)
716 break;
718 while (1);
720 /* Copy the input, translating as needed. */
721 in = original;
722 /* For 2 char unicode, max out is 12 (colour escapes) + 6, ie. 9 per in
723 For hex, max out is 8 for 2 char unicode, ie. 4 per in.
724 3 and 4 char unicode produce less output for input. */
725 size_t max_needed = strlen (in) * 9 + 1;
726 if (buffer_len < max_needed)
728 buffer_len = max_needed;
729 free (buffer);
730 buffer = xmalloc (buffer_len);
733 out = buffer;
736 unsigned char c = *in++;
738 if (c == 0)
739 break;
741 if (ISCNTRL (c))
743 *out++ = '^';
744 *out++ = c + 0x40;
746 else if (unicode_display != unicode_default && c >= 0xc0)
748 unsigned int num_consumed;
750 out += display_utf8 ((const unsigned char *) --in, out, &num_consumed);
751 in += num_consumed;
753 else
754 *out++ = c;
756 while (1);
758 *out = 0;
759 return buffer;
763 /* Returns TRUE if the specified section should be dumped. */
765 static bool
766 process_section_p (asection * section)
768 struct only * only;
770 if (only_list == NULL)
771 return true;
773 for (only = only_list; only; only = only->next)
774 if (strcmp (only->name, section->name) == 0)
776 only->seen = true;
777 return true;
780 return false;
783 /* Add an entry to the 'only' list. */
785 static void
786 add_only (char * name)
788 struct only * only;
790 /* First check to make sure that we do not
791 already have an entry for this name. */
792 for (only = only_list; only; only = only->next)
793 if (strcmp (only->name, name) == 0)
794 return;
796 only = xmalloc (sizeof * only);
797 only->name = name;
798 only->seen = false;
799 only->next = only_list;
800 only_list = only;
803 /* Release the memory used by the 'only' list.
804 PR 11225: Issue a warning message for unseen sections.
805 Only do this if none of the sections were seen. This is mainly to support
806 tools like the GAS testsuite where an object file is dumped with a list of
807 generic section names known to be present in a range of different file
808 formats. */
810 static void
811 free_only_list (void)
813 bool at_least_one_seen = false;
814 struct only * only;
815 struct only * next;
817 if (only_list == NULL)
818 return;
820 for (only = only_list; only; only = only->next)
821 if (only->seen)
823 at_least_one_seen = true;
824 break;
827 for (only = only_list; only; only = next)
829 if (! at_least_one_seen)
831 non_fatal (_("section '%s' mentioned in a -j option, "
832 "but not found in any input file"),
833 only->name);
834 exit_status = 1;
836 next = only->next;
837 free (only);
842 static void
843 dump_section_header (bfd *abfd, asection *section, void *data)
845 char *comma = "";
846 unsigned int opb = bfd_octets_per_byte (abfd, section);
847 int longest_section_name = *((int *) data);
849 /* Ignore linker created section. See elfNN_ia64_object_p in
850 bfd/elfxx-ia64.c. */
851 if (section->flags & SEC_LINKER_CREATED)
852 return;
854 /* PR 10413: Skip sections that we are ignoring. */
855 if (! process_section_p (section))
856 return;
858 printf ("%3d %-*s %08lx ", section->index, longest_section_name,
859 sanitize_string (bfd_section_name (section)),
860 (unsigned long) bfd_section_size (section) / opb);
861 bfd_printf_vma (abfd, bfd_section_vma (section));
862 printf (" ");
863 bfd_printf_vma (abfd, section->lma);
864 printf (" %08lx 2**%u", (unsigned long) section->filepos,
865 bfd_section_alignment (section));
866 if (! wide_output)
867 printf ("\n ");
868 printf (" ");
870 #define PF(x, y) \
871 if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
873 PF (SEC_HAS_CONTENTS, "CONTENTS");
874 PF (SEC_ALLOC, "ALLOC");
875 PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
876 PF (SEC_LOAD, "LOAD");
877 PF (SEC_RELOC, "RELOC");
878 PF (SEC_READONLY, "READONLY");
879 PF (SEC_CODE, "CODE");
880 PF (SEC_DATA, "DATA");
881 PF (SEC_ROM, "ROM");
882 PF (SEC_DEBUGGING, "DEBUGGING");
883 PF (SEC_NEVER_LOAD, "NEVER_LOAD");
884 PF (SEC_EXCLUDE, "EXCLUDE");
885 PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
886 if (bfd_get_arch (abfd) == bfd_arch_tic54x)
888 PF (SEC_TIC54X_BLOCK, "BLOCK");
889 PF (SEC_TIC54X_CLINK, "CLINK");
891 PF (SEC_SMALL_DATA, "SMALL_DATA");
892 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
894 PF (SEC_COFF_SHARED, "SHARED");
895 PF (SEC_COFF_NOREAD, "NOREAD");
897 else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
899 PF (SEC_ELF_OCTETS, "OCTETS");
900 PF (SEC_ELF_PURECODE, "PURECODE");
902 PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
903 PF (SEC_GROUP, "GROUP");
904 if (bfd_get_arch (abfd) == bfd_arch_mep)
906 PF (SEC_MEP_VLIW, "VLIW");
909 if ((section->flags & SEC_LINK_ONCE) != 0)
911 const char *ls;
912 struct coff_comdat_info *comdat;
914 switch (section->flags & SEC_LINK_DUPLICATES)
916 default:
917 abort ();
918 case SEC_LINK_DUPLICATES_DISCARD:
919 ls = "LINK_ONCE_DISCARD";
920 break;
921 case SEC_LINK_DUPLICATES_ONE_ONLY:
922 ls = "LINK_ONCE_ONE_ONLY";
923 break;
924 case SEC_LINK_DUPLICATES_SAME_SIZE:
925 ls = "LINK_ONCE_SAME_SIZE";
926 break;
927 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
928 ls = "LINK_ONCE_SAME_CONTENTS";
929 break;
931 printf ("%s%s", comma, ls);
933 comdat = bfd_coff_get_comdat_section (abfd, section);
934 if (comdat != NULL)
935 printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
937 comma = ", ";
940 if (bfd_is_section_compressed (abfd, section))
941 printf ("%sCOMPRESSED", comma);
943 printf ("\n");
944 #undef PF
947 /* Called on each SECTION in ABFD, update the int variable pointed to by
948 DATA which contains the string length of the longest section name. */
950 static void
951 find_longest_section_name (bfd *abfd ATTRIBUTE_UNUSED,
952 asection *section, void *data)
954 int *longest_so_far = (int *) data;
955 const char *name;
956 int len;
958 /* Ignore linker created section. */
959 if (section->flags & SEC_LINKER_CREATED)
960 return;
962 /* Skip sections that we are ignoring. */
963 if (! process_section_p (section))
964 return;
966 name = bfd_section_name (section);
967 len = (int) strlen (name);
968 if (len > *longest_so_far)
969 *longest_so_far = len;
972 static void
973 dump_headers (bfd *abfd)
975 /* The default width of 13 is just an arbitrary choice. */
976 int max_section_name_length = 13;
977 int bfd_vma_width;
979 #ifndef BFD64
980 bfd_vma_width = 10;
981 #else
982 /* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
983 if (bfd_get_arch_size (abfd) == 32)
984 bfd_vma_width = 10;
985 else
986 bfd_vma_width = 18;
987 #endif
989 printf (_("Sections:\n"));
991 if (wide_output)
992 bfd_map_over_sections (abfd, find_longest_section_name,
993 &max_section_name_length);
995 printf (_("Idx %-*s Size %-*s%-*sFile off Algn"),
996 max_section_name_length, "Name",
997 bfd_vma_width, "VMA",
998 bfd_vma_width, "LMA");
1000 if (wide_output)
1001 printf (_(" Flags"));
1002 printf ("\n");
1004 bfd_map_over_sections (abfd, dump_section_header,
1005 &max_section_name_length);
1008 static asymbol **
1009 slurp_symtab (bfd *abfd)
1011 symcount = 0;
1012 if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
1013 return NULL;
1015 long storage = bfd_get_symtab_upper_bound (abfd);
1016 if (storage < 0)
1018 non_fatal (_("failed to read symbol table from: %s"),
1019 bfd_get_filename (abfd));
1020 my_bfd_nonfatal (_("error message was"));
1023 if (storage <= 0)
1024 return NULL;
1026 asymbol **sy = (asymbol **) xmalloc (storage);
1027 symcount = bfd_canonicalize_symtab (abfd, sy);
1028 if (symcount < 0)
1030 my_bfd_nonfatal (bfd_get_filename (abfd));
1031 free (sy);
1032 sy = NULL;
1033 symcount = 0;
1035 return sy;
1038 /* Read in the dynamic symbols. */
1040 static asymbol **
1041 slurp_dynamic_symtab (bfd *abfd)
1043 dynsymcount = 0;
1044 long storage = bfd_get_dynamic_symtab_upper_bound (abfd);
1045 if (storage < 0)
1047 if (!(bfd_get_file_flags (abfd) & DYNAMIC))
1049 non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
1050 exit_status = 1;
1051 return NULL;
1054 my_bfd_nonfatal (bfd_get_filename (abfd));
1057 if (storage <= 0)
1058 return NULL;
1060 asymbol **sy = (asymbol **) xmalloc (storage);
1061 dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
1062 if (dynsymcount < 0)
1064 my_bfd_nonfatal (bfd_get_filename (abfd));
1065 free (sy);
1066 sy = NULL;
1067 dynsymcount = 0;
1069 return sy;
1072 /* Some symbol names are significant and should be kept in the
1073 table of sorted symbol names, even if they are marked as
1074 debugging/section symbols. */
1076 static bool
1077 is_significant_symbol_name (const char * name)
1079 return startswith (name, ".plt") || startswith (name, ".got");
1082 /* Filter out (in place) symbols that are useless for disassembly.
1083 COUNT is the number of elements in SYMBOLS.
1084 Return the number of useful symbols. */
1086 static long
1087 remove_useless_symbols (asymbol **symbols, long count)
1089 asymbol **in_ptr = symbols, **out_ptr = symbols;
1091 while (--count >= 0)
1093 asymbol *sym = *in_ptr++;
1095 if (sym->name == NULL || sym->name[0] == '\0')
1096 continue;
1097 if ((sym->flags & (BSF_DEBUGGING | BSF_SECTION_SYM))
1098 && ! is_significant_symbol_name (sym->name))
1099 continue;
1100 if (bfd_is_und_section (sym->section)
1101 || bfd_is_com_section (sym->section))
1102 continue;
1104 *out_ptr++ = sym;
1106 return out_ptr - symbols;
1109 static const asection *compare_section;
1111 /* Sort symbols into value order. */
1113 static int
1114 compare_symbols (const void *ap, const void *bp)
1116 const asymbol *a = * (const asymbol **) ap;
1117 const asymbol *b = * (const asymbol **) bp;
1118 const char *an;
1119 const char *bn;
1120 size_t anl;
1121 size_t bnl;
1122 bool as, af, bs, bf;
1123 flagword aflags;
1124 flagword bflags;
1126 if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
1127 return 1;
1128 else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
1129 return -1;
1131 /* Prefer symbols from the section currently being disassembled.
1132 Don't sort symbols from other sections by section, since there
1133 isn't much reason to prefer one section over another otherwise.
1134 See sym_ok comment for why we compare by section name. */
1135 as = strcmp (compare_section->name, a->section->name) == 0;
1136 bs = strcmp (compare_section->name, b->section->name) == 0;
1137 if (as && !bs)
1138 return -1;
1139 if (!as && bs)
1140 return 1;
1142 an = bfd_asymbol_name (a);
1143 bn = bfd_asymbol_name (b);
1144 anl = strlen (an);
1145 bnl = strlen (bn);
1147 /* The symbols gnu_compiled and gcc2_compiled convey no real
1148 information, so put them after other symbols with the same value. */
1149 af = (strstr (an, "gnu_compiled") != NULL
1150 || strstr (an, "gcc2_compiled") != NULL);
1151 bf = (strstr (bn, "gnu_compiled") != NULL
1152 || strstr (bn, "gcc2_compiled") != NULL);
1154 if (af && ! bf)
1155 return 1;
1156 if (! af && bf)
1157 return -1;
1159 /* We use a heuristic for the file name, to try to sort it after
1160 more useful symbols. It may not work on non Unix systems, but it
1161 doesn't really matter; the only difference is precisely which
1162 symbol names get printed. */
1164 #define file_symbol(s, sn, snl) \
1165 (((s)->flags & BSF_FILE) != 0 \
1166 || ((snl) > 2 \
1167 && (sn)[(snl) - 2] == '.' \
1168 && ((sn)[(snl) - 1] == 'o' \
1169 || (sn)[(snl) - 1] == 'a')))
1171 af = file_symbol (a, an, anl);
1172 bf = file_symbol (b, bn, bnl);
1174 if (af && ! bf)
1175 return 1;
1176 if (! af && bf)
1177 return -1;
1179 /* Sort function and object symbols before global symbols before
1180 local symbols before section symbols before debugging symbols. */
1182 aflags = a->flags;
1183 bflags = b->flags;
1185 if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
1187 if ((aflags & BSF_DEBUGGING) != 0)
1188 return 1;
1189 else
1190 return -1;
1192 if ((aflags & BSF_SECTION_SYM) != (bflags & BSF_SECTION_SYM))
1194 if ((aflags & BSF_SECTION_SYM) != 0)
1195 return 1;
1196 else
1197 return -1;
1199 if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
1201 if ((aflags & BSF_FUNCTION) != 0)
1202 return -1;
1203 else
1204 return 1;
1206 if ((aflags & BSF_OBJECT) != (bflags & BSF_OBJECT))
1208 if ((aflags & BSF_OBJECT) != 0)
1209 return -1;
1210 else
1211 return 1;
1213 if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
1215 if ((aflags & BSF_LOCAL) != 0)
1216 return 1;
1217 else
1218 return -1;
1220 if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
1222 if ((aflags & BSF_GLOBAL) != 0)
1223 return -1;
1224 else
1225 return 1;
1228 /* Sort larger size ELF symbols before smaller. See PR20337. */
1229 bfd_vma asz = 0;
1230 if ((a->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
1231 && bfd_get_flavour (bfd_asymbol_bfd (a)) == bfd_target_elf_flavour)
1232 asz = ((elf_symbol_type *) a)->internal_elf_sym.st_size;
1233 bfd_vma bsz = 0;
1234 if ((b->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0
1235 && bfd_get_flavour (bfd_asymbol_bfd (b)) == bfd_target_elf_flavour)
1236 bsz = ((elf_symbol_type *) b)->internal_elf_sym.st_size;
1237 if (asz != bsz)
1238 return asz > bsz ? -1 : 1;
1240 /* Symbols that start with '.' might be section names, so sort them
1241 after symbols that don't start with '.'. */
1242 if (an[0] == '.' && bn[0] != '.')
1243 return 1;
1244 if (an[0] != '.' && bn[0] == '.')
1245 return -1;
1247 /* Finally, if we can't distinguish them in any other way, try to
1248 get consistent results by sorting the symbols by name. */
1249 return strcmp (an, bn);
1252 /* Sort relocs into address order. */
1254 static int
1255 compare_relocs (const void *ap, const void *bp)
1257 const arelent *a = * (const arelent **) ap;
1258 const arelent *b = * (const arelent **) bp;
1260 if (a->address > b->address)
1261 return 1;
1262 else if (a->address < b->address)
1263 return -1;
1265 /* So that associated relocations tied to the same address show up
1266 in the correct order, we don't do any further sorting. */
1267 if (a > b)
1268 return 1;
1269 else if (a < b)
1270 return -1;
1271 else
1272 return 0;
1275 /* Print an address (VMA) to the output stream in INFO.
1276 If SKIP_ZEROES is TRUE, omit leading zeroes. */
1278 static void
1279 objdump_print_value (bfd_vma vma, struct disassemble_info *inf,
1280 bool skip_zeroes)
1282 char buf[30];
1283 char *p;
1284 struct objdump_disasm_info *aux;
1286 aux = (struct objdump_disasm_info *) inf->application_data;
1287 bfd_sprintf_vma (aux->abfd, buf, vma);
1288 if (! skip_zeroes)
1289 p = buf;
1290 else
1292 for (p = buf; *p == '0'; ++p)
1294 if (*p == '\0')
1295 --p;
1297 (*inf->fprintf_styled_func) (inf->stream, dis_style_address, "%s", p);
1300 /* Print the name of a symbol. */
1302 static void
1303 objdump_print_symname (bfd *abfd, struct disassemble_info *inf,
1304 asymbol *sym)
1306 char *alloc;
1307 const char *name, *version_string = NULL;
1308 bool hidden = false;
1310 alloc = NULL;
1311 name = bfd_asymbol_name (sym);
1312 if (do_demangle && name[0] != '\0')
1314 /* Demangle the name. */
1315 alloc = bfd_demangle (abfd, name, demangle_flags);
1316 if (alloc != NULL)
1317 name = alloc;
1320 if ((sym->flags & (BSF_SECTION_SYM | BSF_SYNTHETIC)) == 0)
1321 version_string = bfd_get_symbol_version_string (abfd, sym, true,
1322 &hidden);
1324 if (bfd_is_und_section (bfd_asymbol_section (sym)))
1325 hidden = true;
1327 name = sanitize_string (name);
1329 if (inf != NULL)
1331 (*inf->fprintf_styled_func) (inf->stream, dis_style_symbol, "%s", name);
1332 if (version_string && *version_string != '\0')
1333 (*inf->fprintf_styled_func) (inf->stream, dis_style_symbol,
1334 hidden ? "@%s" : "@@%s",
1335 version_string);
1337 else
1339 printf ("%s", name);
1340 if (version_string && *version_string != '\0')
1341 printf (hidden ? "@%s" : "@@%s", version_string);
1344 if (alloc != NULL)
1345 free (alloc);
1348 static inline bool
1349 sym_ok (bool want_section,
1350 bfd *abfd ATTRIBUTE_UNUSED,
1351 long place,
1352 asection *sec,
1353 struct disassemble_info *inf)
1355 if (want_section)
1357 /* NB: An object file can have different sections with the same
1358 section name. Compare compare section pointers if they have
1359 the same owner. */
1360 if (sorted_syms[place]->section->owner == sec->owner
1361 && sorted_syms[place]->section != sec)
1362 return false;
1364 /* Note - we cannot just compare section pointers because they could
1365 be different, but the same... Ie the symbol that we are trying to
1366 find could have come from a separate debug info file. Under such
1367 circumstances the symbol will be associated with a section in the
1368 debug info file, whilst the section we want is in a normal file.
1369 So the section pointers will be different, but the section names
1370 will be the same. */
1371 if (strcmp (bfd_section_name (sorted_syms[place]->section),
1372 bfd_section_name (sec)) != 0)
1373 return false;
1376 return inf->symbol_is_valid (sorted_syms[place], inf);
1379 /* Locate a symbol given a bfd and a section (from INFO->application_data),
1380 and a VMA. If INFO->application_data->require_sec is TRUE, then always
1381 require the symbol to be in the section. Returns NULL if there is no
1382 suitable symbol. If PLACE is not NULL, then *PLACE is set to the index
1383 of the symbol in sorted_syms. */
1385 static asymbol *
1386 find_symbol_for_address (bfd_vma vma,
1387 struct disassemble_info *inf,
1388 long *place)
1390 /* @@ Would it speed things up to cache the last two symbols returned,
1391 and maybe their address ranges? For many processors, only one memory
1392 operand can be present at a time, so the 2-entry cache wouldn't be
1393 constantly churned by code doing heavy memory accesses. */
1395 /* Indices in `sorted_syms'. */
1396 long min = 0;
1397 long max_count = sorted_symcount;
1398 long thisplace;
1399 struct objdump_disasm_info *aux;
1400 bfd *abfd;
1401 asection *sec;
1402 unsigned int opb;
1403 bool want_section;
1404 long rel_count;
1406 if (sorted_symcount < 1)
1407 return NULL;
1409 aux = (struct objdump_disasm_info *) inf->application_data;
1410 abfd = aux->abfd;
1411 sec = inf->section;
1412 opb = inf->octets_per_byte;
1414 /* Perform a binary search looking for the closest symbol to the
1415 required value. We are searching the range (min, max_count]. */
1416 while (min + 1 < max_count)
1418 asymbol *sym;
1420 thisplace = (max_count + min) / 2;
1421 sym = sorted_syms[thisplace];
1423 if (bfd_asymbol_value (sym) > vma)
1424 max_count = thisplace;
1425 else if (bfd_asymbol_value (sym) < vma)
1426 min = thisplace;
1427 else
1429 min = thisplace;
1430 break;
1434 /* The symbol we want is now in min, the low end of the range we
1435 were searching. If there are several symbols with the same
1436 value, we want the first one. */
1437 thisplace = min;
1438 while (thisplace > 0
1439 && (bfd_asymbol_value (sorted_syms[thisplace])
1440 == bfd_asymbol_value (sorted_syms[thisplace - 1])))
1441 --thisplace;
1443 /* Prefer a symbol in the current section if we have multple symbols
1444 with the same value, as can occur with overlays or zero size
1445 sections. */
1446 min = thisplace;
1447 while (min < max_count
1448 && (bfd_asymbol_value (sorted_syms[min])
1449 == bfd_asymbol_value (sorted_syms[thisplace])))
1451 if (sym_ok (true, abfd, min, sec, inf))
1453 thisplace = min;
1455 if (place != NULL)
1456 *place = thisplace;
1458 return sorted_syms[thisplace];
1460 ++min;
1463 /* If the file is relocatable, and the symbol could be from this
1464 section, prefer a symbol from this section over symbols from
1465 others, even if the other symbol's value might be closer.
1467 Note that this may be wrong for some symbol references if the
1468 sections have overlapping memory ranges, but in that case there's
1469 no way to tell what's desired without looking at the relocation
1470 table.
1472 Also give the target a chance to reject symbols. */
1473 want_section = (aux->require_sec
1474 || ((abfd->flags & HAS_RELOC) != 0
1475 && vma >= bfd_section_vma (sec)
1476 && vma < (bfd_section_vma (sec)
1477 + bfd_section_size (sec) / opb)));
1479 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1481 long i;
1482 long newplace = sorted_symcount;
1484 for (i = min - 1; i >= 0; i--)
1486 if (sym_ok (want_section, abfd, i, sec, inf))
1488 if (newplace == sorted_symcount)
1489 newplace = i;
1491 if (bfd_asymbol_value (sorted_syms[i])
1492 != bfd_asymbol_value (sorted_syms[newplace]))
1493 break;
1495 /* Remember this symbol and keep searching until we reach
1496 an earlier address. */
1497 newplace = i;
1501 if (newplace != sorted_symcount)
1502 thisplace = newplace;
1503 else
1505 /* We didn't find a good symbol with a smaller value.
1506 Look for one with a larger value. */
1507 for (i = thisplace + 1; i < sorted_symcount; i++)
1509 if (sym_ok (want_section, abfd, i, sec, inf))
1511 thisplace = i;
1512 break;
1517 if (! sym_ok (want_section, abfd, thisplace, sec, inf))
1518 /* There is no suitable symbol. */
1519 return NULL;
1522 /* If we have not found an exact match for the specified address
1523 and we have dynamic relocations available, then we can produce
1524 a better result by matching a relocation to the address and
1525 using the symbol associated with that relocation. */
1526 rel_count = inf->dynrelcount;
1527 if (!want_section
1528 && sorted_syms[thisplace]->value != vma
1529 && rel_count > 0
1530 && inf->dynrelbuf != NULL
1531 && inf->dynrelbuf[0]->address <= vma
1532 && inf->dynrelbuf[rel_count - 1]->address >= vma
1533 /* If we have matched a synthetic symbol, then stick with that. */
1534 && (sorted_syms[thisplace]->flags & BSF_SYNTHETIC) == 0)
1536 arelent ** rel_low;
1537 arelent ** rel_high;
1539 rel_low = inf->dynrelbuf;
1540 rel_high = rel_low + rel_count - 1;
1541 while (rel_low <= rel_high)
1543 arelent **rel_mid = &rel_low[(rel_high - rel_low) / 2];
1544 arelent * rel = *rel_mid;
1546 if (rel->address == vma)
1548 /* Absolute relocations do not provide a more helpful
1549 symbolic address. Find a non-absolute relocation
1550 with the same address. */
1551 arelent **rel_vma = rel_mid;
1552 for (rel_mid--;
1553 rel_mid >= rel_low && rel_mid[0]->address == vma;
1554 rel_mid--)
1555 rel_vma = rel_mid;
1557 for (; rel_vma <= rel_high && rel_vma[0]->address == vma;
1558 rel_vma++)
1560 rel = *rel_vma;
1561 if (rel->sym_ptr_ptr != NULL
1562 && ! bfd_is_abs_section ((* rel->sym_ptr_ptr)->section))
1564 if (place != NULL)
1565 * place = thisplace;
1566 return * rel->sym_ptr_ptr;
1569 break;
1572 if (vma < rel->address)
1573 rel_high = rel_mid;
1574 else if (vma >= rel_mid[1]->address)
1575 rel_low = rel_mid + 1;
1576 else
1577 break;
1581 if (place != NULL)
1582 *place = thisplace;
1584 return sorted_syms[thisplace];
1587 /* Print an address and the offset to the nearest symbol. */
1589 static void
1590 objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
1591 bfd_vma vma, struct disassemble_info *inf,
1592 bool skip_zeroes)
1594 if (!no_addresses)
1596 objdump_print_value (vma, inf, skip_zeroes);
1597 (*inf->fprintf_styled_func) (inf->stream, dis_style_text, " ");
1600 if (sym == NULL)
1602 bfd_vma secaddr;
1604 (*inf->fprintf_styled_func) (inf->stream, dis_style_text,"<");
1605 (*inf->fprintf_styled_func) (inf->stream, dis_style_symbol, "%s",
1606 sanitize_string (bfd_section_name (sec)));
1607 secaddr = bfd_section_vma (sec);
1608 if (vma < secaddr)
1610 (*inf->fprintf_styled_func) (inf->stream, dis_style_immediate,
1611 "-0x");
1612 objdump_print_value (secaddr - vma, inf, true);
1614 else if (vma > secaddr)
1616 (*inf->fprintf_styled_func) (inf->stream, dis_style_immediate, "+0x");
1617 objdump_print_value (vma - secaddr, inf, true);
1619 (*inf->fprintf_styled_func) (inf->stream, dis_style_text, ">");
1621 else
1623 (*inf->fprintf_styled_func) (inf->stream, dis_style_text, "<");
1625 objdump_print_symname (abfd, inf, sym);
1627 if (bfd_asymbol_value (sym) == vma)
1629 /* Undefined symbols in an executables and dynamic objects do not have
1630 a value associated with them, so it does not make sense to display
1631 an offset relative to them. Normally we would not be provided with
1632 this kind of symbol, but the target backend might choose to do so,
1633 and the code in find_symbol_for_address might return an as yet
1634 unresolved symbol associated with a dynamic reloc. */
1635 else if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC))
1636 && bfd_is_und_section (sym->section))
1638 else if (bfd_asymbol_value (sym) > vma)
1640 (*inf->fprintf_styled_func) (inf->stream, dis_style_immediate,"-0x");
1641 objdump_print_value (bfd_asymbol_value (sym) - vma, inf, true);
1643 else if (vma > bfd_asymbol_value (sym))
1645 (*inf->fprintf_styled_func) (inf->stream, dis_style_immediate, "+0x");
1646 objdump_print_value (vma - bfd_asymbol_value (sym), inf, true);
1649 (*inf->fprintf_styled_func) (inf->stream, dis_style_text, ">");
1652 if (display_file_offsets)
1653 inf->fprintf_styled_func (inf->stream, dis_style_text,
1654 _(" (File Offset: 0x%lx)"),
1655 (long int)(sec->filepos + (vma - sec->vma)));
1658 /* Displays all symbols in the sorted symbol table starting at PLACE
1659 which match the address VMA. Assumes that show_all_symbols == true. */
1661 static void
1662 display_extra_syms (long place,
1663 bfd_vma vma,
1664 struct disassemble_info *inf)
1666 struct objdump_disasm_info *aux = (struct objdump_disasm_info *) inf->application_data;
1668 if (place == 0)
1669 return;
1671 bool first = true;
1673 for (; place < sorted_symcount; place++)
1675 asymbol *sym = sorted_syms[place];
1677 if (bfd_asymbol_value (sym) != vma)
1678 break;
1680 if (! inf->symbol_is_valid (sym, inf))
1681 continue;
1683 if (first && ! do_wide)
1684 inf->fprintf_styled_func (inf->stream, dis_style_immediate, ",\n\t<");
1685 else
1686 inf->fprintf_styled_func (inf->stream, dis_style_immediate, ", <");
1688 objdump_print_symname (aux->abfd, inf, sym);
1689 inf->fprintf_styled_func (inf->stream, dis_style_immediate, ">");
1690 first = false;
1694 /* Print an address (VMA), symbolically if possible.
1695 If SKIP_ZEROES is TRUE, don't output leading zeroes. */
1697 static void
1698 objdump_print_addr (bfd_vma vma,
1699 struct disassemble_info *inf,
1700 bool skip_zeroes)
1702 struct objdump_disasm_info *aux;
1703 asymbol *sym = NULL;
1704 bool skip_find = false;
1705 long place = 0;
1707 aux = (struct objdump_disasm_info *) inf->application_data;
1709 if (sorted_symcount < 1)
1711 if (!no_addresses)
1713 (*inf->fprintf_styled_func) (inf->stream, dis_style_address, "0x");
1714 objdump_print_value (vma, inf, skip_zeroes);
1717 if (display_file_offsets)
1718 inf->fprintf_styled_func (inf->stream, dis_style_text,
1719 _(" (File Offset: 0x%lx)"),
1720 (long int) (inf->section->filepos
1721 + (vma - inf->section->vma)));
1722 return;
1725 if (aux->reloc != NULL
1726 && aux->reloc->sym_ptr_ptr != NULL
1727 && * aux->reloc->sym_ptr_ptr != NULL)
1729 sym = * aux->reloc->sym_ptr_ptr;
1731 /* Adjust the vma to the reloc. */
1732 vma += bfd_asymbol_value (sym);
1734 if (bfd_is_und_section (bfd_asymbol_section (sym)))
1735 skip_find = true;
1738 if (!skip_find)
1739 sym = find_symbol_for_address (vma, inf, &place);
1741 objdump_print_addr_with_sym (aux->abfd, inf->section, sym, vma, inf,
1742 skip_zeroes);
1744 /* If requested, display any extra symbols at this address. */
1745 if (sym == NULL || ! show_all_symbols)
1746 return;
1748 if (place)
1749 display_extra_syms (place + 1, vma, inf);
1751 /* If we found an absolute symbol in the reloc (ie: "*ABS*+0x....")
1752 and there is a valid symbol at the address contained in the absolute symbol
1753 then display any extra symbols that match this address. This helps
1754 particularly with relocations for PLT entries. */
1755 if (startswith (sym->name, BFD_ABS_SECTION_NAME "+"))
1757 bfd_vma addr = strtoul (sym->name + strlen (BFD_ABS_SECTION_NAME "+"), NULL, 0);
1759 if (addr && addr != vma)
1761 sym = find_symbol_for_address (addr, inf, &place);
1763 if (sym)
1764 display_extra_syms (place, addr, inf);
1769 /* Print VMA to INFO. This function is passed to the disassembler
1770 routine. */
1772 static void
1773 objdump_print_address (bfd_vma vma, struct disassemble_info *inf)
1775 objdump_print_addr (vma, inf, ! prefix_addresses);
1778 /* Determine if the given address has a symbol associated with it. */
1780 static asymbol *
1781 objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * inf)
1783 asymbol * sym;
1785 sym = find_symbol_for_address (vma, inf, NULL);
1786 if (sym != NULL && bfd_asymbol_value (sym) == vma)
1787 return sym;
1789 return NULL;
1792 /* Hold the last function name and the last line number we displayed
1793 in a disassembly. */
1795 static char *prev_functionname;
1796 static unsigned int prev_line;
1797 static unsigned int prev_discriminator;
1799 /* We keep a list of all files that we have seen when doing a
1800 disassembly with source, so that we know how much of the file to
1801 display. This can be important for inlined functions. */
1803 struct print_file_list
1805 struct print_file_list *next;
1806 const char *filename;
1807 const char *modname;
1808 const char *map;
1809 size_t mapsize;
1810 const char **linemap;
1811 unsigned maxline;
1812 unsigned last_line;
1813 unsigned max_printed;
1814 int first;
1817 static struct print_file_list *print_files;
1819 /* The number of preceding context lines to show when we start
1820 displaying a file for the first time. */
1822 #define SHOW_PRECEDING_CONTEXT_LINES (5)
1824 #if HAVE_LIBDEBUGINFOD
1825 /* Return a hex string represention of the build-id. */
1827 unsigned char *
1828 get_build_id (void * data)
1830 unsigned i;
1831 char * build_id_str;
1832 bfd * abfd = (bfd *) data;
1833 const struct bfd_build_id * build_id;
1835 build_id = abfd->build_id;
1836 if (build_id == NULL)
1837 return NULL;
1839 build_id_str = malloc (build_id->size * 2 + 1);
1840 if (build_id_str == NULL)
1841 return NULL;
1843 for (i = 0; i < build_id->size; i++)
1844 sprintf (build_id_str + (i * 2), "%02x", build_id->data[i]);
1845 build_id_str[build_id->size * 2] = '\0';
1847 return (unsigned char *) build_id_str;
1850 /* Search for a separate debug file matching ABFD's build-id. */
1852 static bfd *
1853 find_separate_debug (const bfd * abfd)
1855 const struct bfd_build_id * build_id = abfd->build_id;
1856 separate_info * i = first_separate_info;
1858 if (build_id == NULL || i == NULL)
1859 return NULL;
1861 while (i != NULL)
1863 const bfd * i_bfd = (bfd *) i->handle;
1865 if (abfd != NULL && i_bfd->build_id != NULL)
1867 const unsigned char * data = i_bfd->build_id->data;
1868 size_t size = i_bfd->build_id->size;
1870 if (size == build_id->size
1871 && memcmp (data, build_id->data, size) == 0)
1872 return (bfd *) i->handle;
1875 i = i->next;
1878 return NULL;
1881 /* Search for a separate debug file matching ABFD's .gnu_debugaltlink
1882 build-id. */
1884 static bfd *
1885 find_alt_debug (const bfd * abfd)
1887 size_t namelen;
1888 size_t id_len;
1889 const char * name;
1890 struct dwarf_section * section;
1891 const struct bfd_build_id * build_id = abfd->build_id;
1892 separate_info * i = first_separate_info;
1894 if (i == NULL
1895 || build_id == NULL
1896 || !load_debug_section (gnu_debugaltlink, (void *) abfd))
1897 return NULL;
1899 section = &debug_displays[gnu_debugaltlink].section;
1900 if (section == NULL)
1901 return NULL;
1903 name = (const char *) section->start;
1904 namelen = strnlen (name, section->size) + 1;
1905 if (namelen == 1)
1906 return NULL;
1907 if (namelen >= section->size)
1908 return NULL;
1910 id_len = section->size - namelen;
1911 if (id_len < 0x14)
1912 return NULL;
1914 /* Compare the .gnu_debugaltlink build-id with the build-ids of the
1915 known separate_info files. */
1916 while (i != NULL)
1918 const bfd * i_bfd = (bfd *) i->handle;
1920 if (i_bfd != NULL && i_bfd->build_id != NULL)
1922 const unsigned char * data = i_bfd->build_id->data;
1923 size_t size = i_bfd->build_id->size;
1925 if (id_len == size
1926 && memcmp (section->start + namelen, data, size) == 0)
1927 return (bfd *) i->handle;
1930 i = i->next;
1933 return NULL;
1936 #endif /* HAVE_LIBDEBUGINFOD */
1938 /* Reads the contents of file FN into memory. Returns a pointer to the buffer.
1939 Also returns the size of the buffer in SIZE_RETURN and a filled out
1940 stat structure in FST_RETURN. Returns NULL upon failure. */
1942 static const char *
1943 slurp_file (const char * fn,
1944 size_t * size_return,
1945 struct stat * fst_return,
1946 bfd * abfd ATTRIBUTE_UNUSED)
1948 #ifdef HAVE_MMAP
1949 int ps;
1950 size_t msize;
1951 #endif
1952 const char *map;
1953 int fd;
1955 /* Paranoia. */
1956 if (fn == NULL || * fn == 0 || size_return == NULL || fst_return == NULL)
1957 return NULL;
1959 fd = open (fn, O_RDONLY | O_BINARY);
1961 #if HAVE_LIBDEBUGINFOD
1962 if (fd < 0 && use_debuginfod && fn[0] == '/' && abfd != NULL)
1964 unsigned char *build_id = get_build_id (abfd);
1966 if (build_id)
1968 debuginfod_client *client = debuginfod_begin ();
1970 if (client)
1972 fd = debuginfod_find_source (client, build_id, 0, fn, NULL);
1973 debuginfod_end (client);
1975 free (build_id);
1978 #endif
1980 if (fd < 0)
1981 return NULL;
1983 if (fstat (fd, fst_return) < 0)
1985 close (fd);
1986 return NULL;
1989 *size_return = fst_return->st_size;
1991 #ifdef HAVE_MMAP
1992 ps = getpagesize ();
1993 msize = (*size_return + ps - 1) & ~(ps - 1);
1994 map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
1995 if (map != (char *) -1L)
1997 close (fd);
1998 return map;
2000 #endif
2002 map = (const char *) malloc (*size_return);
2003 if (!map || (size_t) read (fd, (char *) map, *size_return) != *size_return)
2005 free ((void *) map);
2006 map = NULL;
2008 close (fd);
2009 return map;
2012 #define line_map_decrease 5
2014 /* Precompute array of lines for a mapped file. */
2016 static const char **
2017 index_file (const char *map, size_t size, unsigned int *maxline)
2019 const char *p, *lstart, *end;
2020 int chars_per_line = 45; /* First iteration will use 40. */
2021 unsigned int lineno;
2022 const char **linemap = NULL;
2023 unsigned long line_map_size = 0;
2025 lineno = 0;
2026 lstart = map;
2027 end = map + size;
2029 for (p = map; p < end; p++)
2031 if (*p == '\n')
2033 if (p + 1 < end && p[1] == '\r')
2034 p++;
2036 else if (*p == '\r')
2038 if (p + 1 < end && p[1] == '\n')
2039 p++;
2041 else
2042 continue;
2044 /* End of line found. */
2046 if (linemap == NULL || line_map_size < lineno + 1)
2048 unsigned long newsize;
2050 chars_per_line -= line_map_decrease;
2051 if (chars_per_line <= 1)
2052 chars_per_line = 1;
2053 line_map_size = size / chars_per_line + 1;
2054 if (line_map_size < lineno + 1)
2055 line_map_size = lineno + 1;
2056 newsize = line_map_size * sizeof (char *);
2057 linemap = (const char **) xrealloc (linemap, newsize);
2060 linemap[lineno++] = lstart;
2061 lstart = p + 1;
2064 *maxline = lineno;
2065 return linemap;
2068 /* Tries to open MODNAME, and if successful adds a node to print_files
2069 linked list and returns that node. Also fills in the stat structure
2070 pointed to by FST_RETURN. Returns NULL on failure. */
2072 static struct print_file_list *
2073 try_print_file_open (const char * origname,
2074 const char * modname,
2075 struct stat * fst_return,
2076 bfd * abfd)
2078 struct print_file_list *p;
2080 p = (struct print_file_list *) xmalloc (sizeof (struct print_file_list));
2082 p->map = slurp_file (modname, &p->mapsize, fst_return, abfd);
2083 if (p->map == NULL)
2085 free (p);
2086 return NULL;
2089 p->linemap = index_file (p->map, p->mapsize, &p->maxline);
2090 p->last_line = 0;
2091 p->max_printed = 0;
2092 p->filename = origname;
2093 p->modname = modname;
2094 p->next = print_files;
2095 p->first = 1;
2096 print_files = p;
2097 return p;
2100 /* If the source file, as described in the symtab, is not found
2101 try to locate it in one of the paths specified with -I
2102 If found, add location to print_files linked list. */
2104 static struct print_file_list *
2105 update_source_path (const char *filename, bfd *abfd)
2107 struct print_file_list *p;
2108 const char *fname;
2109 struct stat fst;
2110 int i;
2112 p = try_print_file_open (filename, filename, &fst, abfd);
2113 if (p == NULL)
2115 if (include_path_count == 0)
2116 return NULL;
2118 /* Get the name of the file. */
2119 fname = lbasename (filename);
2121 /* If file exists under a new path, we need to add it to the list
2122 so that show_line knows about it. */
2123 for (i = 0; i < include_path_count; i++)
2125 char *modname = concat (include_paths[i], "/", fname,
2126 (const char *) 0);
2128 p = try_print_file_open (filename, modname, &fst, abfd);
2129 if (p)
2130 break;
2132 free (modname);
2136 if (p != NULL)
2138 long mtime = bfd_get_mtime (abfd);
2140 if (fst.st_mtime > mtime)
2141 warn (_("source file %s is more recent than object file\n"),
2142 filename);
2145 return p;
2148 /* Print a source file line. */
2150 static void
2151 print_line (struct print_file_list *p, unsigned int linenum)
2153 const char *l;
2154 size_t len;
2156 if (linenum >= p->maxline)
2157 return;
2158 l = p->linemap [linenum];
2159 if (source_comment != NULL && strlen (l) > 0)
2160 printf ("%s", source_comment);
2161 len = strcspn (l, "\n\r");
2162 /* Test fwrite return value to quiet glibc warning. */
2163 if (len == 0 || fwrite (l, len, 1, stdout) == 1)
2164 putchar ('\n');
2167 /* Print a range of source code lines. */
2169 static void
2170 dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
2172 if (p->map == NULL)
2173 return;
2174 if (start != 0)
2175 --start;
2176 while (start < end)
2178 print_line (p, start);
2179 start++;
2183 /* Show the line number, or the source line, in a disassembly
2184 listing. */
2186 static void
2187 show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
2189 const char *filename;
2190 const char *functionname;
2191 unsigned int linenumber;
2192 unsigned int discriminator;
2193 bool reloc;
2194 char *path = NULL;
2196 if (! with_line_numbers && ! with_source_code)
2197 return;
2199 #ifdef HAVE_LIBDEBUGINFOD
2201 bfd *debug_bfd;
2202 const char *alt_filename = NULL;
2204 if (use_debuginfod)
2206 bfd *alt_bfd;
2208 /* PR 29075: Check for separate debuginfo and .gnu_debugaltlink files.
2209 They need to be passed to bfd_find_nearest_line_with_alt in case they
2210 were downloaded from debuginfod. Otherwise libbfd will attempt to
2211 search for them and fail to locate them. */
2212 debug_bfd = find_separate_debug (abfd);
2213 if (debug_bfd == NULL)
2214 debug_bfd = abfd;
2216 alt_bfd = find_alt_debug (debug_bfd);
2217 if (alt_bfd != NULL)
2218 alt_filename = bfd_get_filename (alt_bfd);
2220 else
2221 debug_bfd = abfd;
2223 bfd_set_error (bfd_error_no_error);
2224 if (! bfd_find_nearest_line_with_alt (debug_bfd, alt_filename,
2225 section, syms,
2226 addr_offset, &filename,
2227 &functionname, &linenumber,
2228 &discriminator))
2230 if (bfd_get_error () == bfd_error_no_error)
2231 return;
2232 if (! bfd_find_nearest_line_discriminator (abfd, section, syms,
2233 addr_offset, &filename,
2234 &functionname, &linenumber,
2235 &discriminator))
2236 return;
2239 #else
2240 if (! bfd_find_nearest_line_discriminator (abfd, section, syms, addr_offset,
2241 &filename, &functionname,
2242 &linenumber, &discriminator))
2243 return;
2244 #endif
2246 if (filename != NULL && *filename == '\0')
2247 filename = NULL;
2248 if (functionname != NULL && *functionname == '\0')
2249 functionname = NULL;
2251 if (filename
2252 && IS_ABSOLUTE_PATH (filename)
2253 && prefix)
2255 char *path_up;
2256 const char *fname = filename;
2258 path = xmalloc (prefix_length + 1 + strlen (filename));
2260 if (prefix_length)
2261 memcpy (path, prefix, prefix_length);
2262 path_up = path + prefix_length;
2264 /* Build relocated filename, stripping off leading directories
2265 from the initial filename if requested. */
2266 if (prefix_strip > 0)
2268 int level = 0;
2269 const char *s;
2271 /* Skip selected directory levels. */
2272 for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
2273 if (IS_DIR_SEPARATOR (*s))
2275 fname = s;
2276 level++;
2280 /* Update complete filename. */
2281 strcpy (path_up, fname);
2283 filename = path;
2284 reloc = true;
2286 else
2287 reloc = false;
2289 if (with_line_numbers)
2291 if (functionname != NULL
2292 && (prev_functionname == NULL
2293 || strcmp (functionname, prev_functionname) != 0))
2295 char *demangle_alloc = NULL;
2296 if (do_demangle && functionname[0] != '\0')
2298 /* Demangle the name. */
2299 demangle_alloc = bfd_demangle (abfd, functionname,
2300 demangle_flags);
2303 /* Demangling adds trailing parens, so don't print those. */
2304 if (demangle_alloc != NULL)
2305 printf ("%s:\n", sanitize_string (demangle_alloc));
2306 else
2307 printf ("%s():\n", sanitize_string (functionname));
2309 prev_line = -1;
2310 free (demangle_alloc);
2312 if (linenumber > 0
2313 && (linenumber != prev_line
2314 || discriminator != prev_discriminator))
2316 if (discriminator > 0)
2317 printf ("%s:%u (discriminator %u)\n",
2318 filename == NULL ? "???" : sanitize_string (filename),
2319 linenumber, discriminator);
2320 else
2321 printf ("%s:%u\n", filename == NULL
2322 ? "???" : sanitize_string (filename),
2323 linenumber);
2325 if (unwind_inlines)
2327 const char *filename2;
2328 const char *functionname2;
2329 unsigned line2;
2331 while (bfd_find_inliner_info (abfd, &filename2, &functionname2,
2332 &line2))
2334 printf ("inlined by %s:%u",
2335 sanitize_string (filename2), line2);
2336 printf (" (%s)\n", sanitize_string (functionname2));
2341 if (with_source_code
2342 && filename != NULL
2343 && linenumber > 0)
2345 struct print_file_list **pp, *p;
2346 unsigned l;
2348 for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
2349 if (filename_cmp ((*pp)->filename, filename) == 0)
2350 break;
2351 p = *pp;
2353 if (p == NULL)
2355 if (reloc)
2356 filename = xstrdup (filename);
2357 p = update_source_path (filename, abfd);
2360 if (p != NULL && linenumber != p->last_line)
2362 if (file_start_context && p->first)
2363 l = 1;
2364 else
2366 l = linenumber - SHOW_PRECEDING_CONTEXT_LINES;
2367 if (l >= linenumber)
2368 l = 1;
2369 if (p->max_printed >= l)
2371 if (p->max_printed < linenumber)
2372 l = p->max_printed + 1;
2373 else
2374 l = linenumber;
2377 dump_lines (p, l, linenumber);
2378 if (p->max_printed < linenumber)
2379 p->max_printed = linenumber;
2380 p->last_line = linenumber;
2381 p->first = 0;
2385 if (functionname != NULL
2386 && (prev_functionname == NULL
2387 || strcmp (functionname, prev_functionname) != 0))
2389 if (prev_functionname != NULL)
2390 free (prev_functionname);
2391 prev_functionname = (char *) xmalloc (strlen (functionname) + 1);
2392 strcpy (prev_functionname, functionname);
2395 if (linenumber > 0 && linenumber != prev_line)
2396 prev_line = linenumber;
2398 if (discriminator != prev_discriminator)
2399 prev_discriminator = discriminator;
2401 if (path)
2402 free (path);
2405 /* Pseudo FILE object for strings. */
2406 typedef struct
2408 char *buffer;
2409 size_t pos;
2410 size_t alloc;
2411 } SFILE;
2413 /* sprintf to a "stream". */
2415 static int ATTRIBUTE_PRINTF_2
2416 objdump_sprintf (SFILE *f, const char *format, ...)
2418 size_t n;
2419 va_list args;
2421 while (1)
2423 size_t space = f->alloc - f->pos;
2425 va_start (args, format);
2426 n = vsnprintf (f->buffer + f->pos, space, format, args);
2427 va_end (args);
2429 if (space > n)
2430 break;
2432 f->alloc = (f->alloc + n) * 2;
2433 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
2435 f->pos += n;
2437 return n;
2440 /* Return an integer greater than, or equal to zero, representing the color
2441 for STYLE, or -1 if no color should be used. */
2443 static int
2444 objdump_color_for_disassembler_style (enum disassembler_style style)
2446 int color = -1;
2448 if (style == dis_style_comment_start)
2449 disassembler_in_comment = true;
2451 if (disassembler_color == on)
2453 if (disassembler_in_comment)
2454 return color;
2456 switch (style)
2458 case dis_style_symbol:
2459 color = 32;
2460 break;
2461 case dis_style_assembler_directive:
2462 case dis_style_sub_mnemonic:
2463 case dis_style_mnemonic:
2464 color = 33;
2465 break;
2466 case dis_style_register:
2467 color = 34;
2468 break;
2469 case dis_style_address:
2470 case dis_style_address_offset:
2471 case dis_style_immediate:
2472 color = 35;
2473 break;
2474 default:
2475 case dis_style_text:
2476 color = -1;
2477 break;
2480 else if (disassembler_color == extended)
2482 if (disassembler_in_comment)
2483 return 250;
2485 switch (style)
2487 case dis_style_symbol:
2488 color = 40;
2489 break;
2490 case dis_style_assembler_directive:
2491 case dis_style_sub_mnemonic:
2492 case dis_style_mnemonic:
2493 color = 142;
2494 break;
2495 case dis_style_register:
2496 color = 27;
2497 break;
2498 case dis_style_address:
2499 case dis_style_address_offset:
2500 case dis_style_immediate:
2501 color = 134;
2502 break;
2503 default:
2504 case dis_style_text:
2505 color = -1;
2506 break;
2509 else if (disassembler_color != off)
2510 bfd_fatal (_("disassembly color not correctly selected"));
2512 return color;
2515 /* Like objdump_sprintf, but add in escape sequences to highlight the
2516 content according to STYLE. */
2518 static int ATTRIBUTE_PRINTF_3
2519 objdump_styled_sprintf (SFILE *f, enum disassembler_style style,
2520 const char *format, ...)
2522 size_t n;
2523 va_list args;
2524 int color = objdump_color_for_disassembler_style (style);
2526 if (color >= 0)
2528 while (1)
2530 size_t space = f->alloc - f->pos;
2532 if (disassembler_color == on)
2533 n = snprintf (f->buffer + f->pos, space, "\033[%dm", color);
2534 else
2535 n = snprintf (f->buffer + f->pos, space, "\033[38;5;%dm", color);
2536 if (space > n)
2537 break;
2539 f->alloc = (f->alloc + n) * 2;
2540 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
2542 f->pos += n;
2545 while (1)
2547 size_t space = f->alloc - f->pos;
2549 va_start (args, format);
2550 n = vsnprintf (f->buffer + f->pos, space, format, args);
2551 va_end (args);
2553 if (space > n)
2554 break;
2556 f->alloc = (f->alloc + n) * 2;
2557 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
2559 f->pos += n;
2561 if (color >= 0)
2563 while (1)
2565 size_t space = f->alloc - f->pos;
2567 n = snprintf (f->buffer + f->pos, space, "\033[0m");
2569 if (space > n)
2570 break;
2572 f->alloc = (f->alloc + n) * 2;
2573 f->buffer = (char *) xrealloc (f->buffer, f->alloc);
2575 f->pos += n;
2578 return n;
2581 /* We discard the styling information here. This function is only used
2582 when objdump is printing auxiliary information, the symbol headers, and
2583 disassembly address, or the bytes of the disassembled instruction. We
2584 don't (currently) apply styling to any of this stuff, so, for now, just
2585 print the content with no additional style added. */
2587 static int ATTRIBUTE_PRINTF_3
2588 fprintf_styled (FILE *f, enum disassembler_style style ATTRIBUTE_UNUSED,
2589 const char *fmt, ...)
2591 int res;
2592 va_list ap;
2594 va_start (ap, fmt);
2595 res = vfprintf (f, fmt, ap);
2596 va_end (ap);
2598 return res;
2601 /* Code for generating (colored) diagrams of control flow start and end
2602 points. */
2604 /* Structure used to store the properties of a jump. */
2606 struct jump_info
2608 /* The next jump, or NULL if this is the last object. */
2609 struct jump_info *next;
2610 /* The previous jump, or NULL if this is the first object. */
2611 struct jump_info *prev;
2612 /* The start addresses of the jump. */
2613 struct
2615 /* The list of start addresses. */
2616 bfd_vma *addresses;
2617 /* The number of elements. */
2618 size_t count;
2619 /* The maximum number of elements that fit into the array. */
2620 size_t max_count;
2621 } start;
2622 /* The end address of the jump. */
2623 bfd_vma end;
2624 /* The drawing level of the jump. */
2625 int level;
2628 /* Construct a jump object for a jump from start
2629 to end with the corresponding level. */
2631 static struct jump_info *
2632 jump_info_new (bfd_vma start, bfd_vma end, int level)
2634 struct jump_info *result = xmalloc (sizeof (struct jump_info));
2636 result->next = NULL;
2637 result->prev = NULL;
2638 result->start.addresses = xmalloc (sizeof (bfd_vma *) * 2);
2639 result->start.addresses[0] = start;
2640 result->start.count = 1;
2641 result->start.max_count = 2;
2642 result->end = end;
2643 result->level = level;
2645 return result;
2648 /* Free a jump object and return the next object
2649 or NULL if this was the last one. */
2651 static struct jump_info *
2652 jump_info_free (struct jump_info *ji)
2654 struct jump_info *result = NULL;
2656 if (ji)
2658 result = ji->next;
2659 if (ji->start.addresses)
2660 free (ji->start.addresses);
2661 free (ji);
2664 return result;
2667 /* Get the smallest value of all start and end addresses. */
2669 static bfd_vma
2670 jump_info_min_address (const struct jump_info *ji)
2672 bfd_vma min_address = ji->end;
2673 size_t i;
2675 for (i = ji->start.count; i-- > 0;)
2676 if (ji->start.addresses[i] < min_address)
2677 min_address = ji->start.addresses[i];
2678 return min_address;
2681 /* Get the largest value of all start and end addresses. */
2683 static bfd_vma
2684 jump_info_max_address (const struct jump_info *ji)
2686 bfd_vma max_address = ji->end;
2687 size_t i;
2689 for (i = ji->start.count; i-- > 0;)
2690 if (ji->start.addresses[i] > max_address)
2691 max_address = ji->start.addresses[i];
2692 return max_address;
2695 /* Get the target address of a jump. */
2697 static bfd_vma
2698 jump_info_end_address (const struct jump_info *ji)
2700 return ji->end;
2703 /* Test if an address is one of the start addresses of a jump. */
2705 static bool
2706 jump_info_is_start_address (const struct jump_info *ji, bfd_vma address)
2708 bool result = false;
2709 size_t i;
2711 for (i = ji->start.count; i-- > 0;)
2712 if (address == ji->start.addresses[i])
2714 result = true;
2715 break;
2718 return result;
2721 /* Test if an address is the target address of a jump. */
2723 static bool
2724 jump_info_is_end_address (const struct jump_info *ji, bfd_vma address)
2726 return (address == ji->end);
2729 /* Get the difference between the smallest and largest address of a jump. */
2731 static bfd_vma
2732 jump_info_size (const struct jump_info *ji)
2734 return jump_info_max_address (ji) - jump_info_min_address (ji);
2737 /* Unlink a jump object from a list. */
2739 static void
2740 jump_info_unlink (struct jump_info *node,
2741 struct jump_info **base)
2743 if (node->next)
2744 node->next->prev = node->prev;
2745 if (node->prev)
2746 node->prev->next = node->next;
2747 else
2748 *base = node->next;
2749 node->next = NULL;
2750 node->prev = NULL;
2753 /* Insert unlinked jump info node into a list. */
2755 static void
2756 jump_info_insert (struct jump_info *node,
2757 struct jump_info *target,
2758 struct jump_info **base)
2760 node->next = target;
2761 node->prev = target->prev;
2762 target->prev = node;
2763 if (node->prev)
2764 node->prev->next = node;
2765 else
2766 *base = node;
2769 /* Add unlinked node to the front of a list. */
2771 static void
2772 jump_info_add_front (struct jump_info *node,
2773 struct jump_info **base)
2775 node->next = *base;
2776 if (node->next)
2777 node->next->prev = node;
2778 node->prev = NULL;
2779 *base = node;
2782 /* Move linked node to target position. */
2784 static void
2785 jump_info_move_linked (struct jump_info *node,
2786 struct jump_info *target,
2787 struct jump_info **base)
2789 /* Unlink node. */
2790 jump_info_unlink (node, base);
2791 /* Insert node at target position. */
2792 jump_info_insert (node, target, base);
2795 /* Test if two jumps intersect. */
2797 static bool
2798 jump_info_intersect (const struct jump_info *a,
2799 const struct jump_info *b)
2801 return ((jump_info_max_address (a) >= jump_info_min_address (b))
2802 && (jump_info_min_address (a) <= jump_info_max_address (b)));
2805 /* Merge two compatible jump info objects. */
2807 static void
2808 jump_info_merge (struct jump_info **base)
2810 struct jump_info *a;
2812 for (a = *base; a; a = a->next)
2814 struct jump_info *b;
2816 for (b = a->next; b; b = b->next)
2818 /* Merge both jumps into one. */
2819 if (a->end == b->end)
2821 /* Reallocate addresses. */
2822 size_t needed_size = a->start.count + b->start.count;
2823 size_t i;
2825 if (needed_size > a->start.max_count)
2827 a->start.max_count += b->start.max_count;
2828 a->start.addresses =
2829 xrealloc (a->start.addresses,
2830 a->start.max_count * sizeof (bfd_vma *));
2833 /* Append start addresses. */
2834 for (i = 0; i < b->start.count; ++i)
2835 a->start.addresses[a->start.count++] =
2836 b->start.addresses[i];
2838 /* Remove and delete jump. */
2839 struct jump_info *tmp = b->prev;
2840 jump_info_unlink (b, base);
2841 jump_info_free (b);
2842 b = tmp;
2848 /* Sort jumps by their size and starting point using a stable
2849 minsort. This could be improved if sorting performance is
2850 an issue, for example by using mergesort. */
2852 static void
2853 jump_info_sort (struct jump_info **base)
2855 struct jump_info *current_element = *base;
2857 while (current_element)
2859 struct jump_info *best_match = current_element;
2860 struct jump_info *runner = current_element->next;
2861 bfd_vma best_size = jump_info_size (best_match);
2863 while (runner)
2865 bfd_vma runner_size = jump_info_size (runner);
2867 if ((runner_size < best_size)
2868 || ((runner_size == best_size)
2869 && (jump_info_min_address (runner)
2870 < jump_info_min_address (best_match))))
2872 best_match = runner;
2873 best_size = runner_size;
2876 runner = runner->next;
2879 if (best_match == current_element)
2880 current_element = current_element->next;
2881 else
2882 jump_info_move_linked (best_match, current_element, base);
2886 /* Visualize all jumps at a given address. */
2888 static void
2889 jump_info_visualize_address (bfd_vma address,
2890 int max_level,
2891 char *line_buffer,
2892 uint8_t *color_buffer)
2894 struct jump_info *ji = detected_jumps;
2895 size_t len = (max_level + 1) * 3;
2897 /* Clear line buffer. */
2898 memset (line_buffer, ' ', len);
2899 memset (color_buffer, 0, len);
2901 /* Iterate over jumps and add their ASCII art. */
2902 while (ji)
2904 /* Discard jumps that are never needed again. */
2905 if (jump_info_max_address (ji) < address)
2907 struct jump_info *tmp = ji;
2909 ji = ji->next;
2910 jump_info_unlink (tmp, &detected_jumps);
2911 jump_info_free (tmp);
2912 continue;
2915 /* This jump intersects with the current address. */
2916 if (jump_info_min_address (ji) <= address)
2918 /* Hash target address to get an even
2919 distribution between all values. */
2920 bfd_vma hash_address = jump_info_end_address (ji);
2921 uint8_t color = iterative_hash_object (hash_address, 0);
2922 /* Fetch line offset. */
2923 int offset = (max_level - ji->level) * 3;
2925 /* Draw start line. */
2926 if (jump_info_is_start_address (ji, address))
2928 size_t i = offset + 1;
2930 for (; i < len - 1; ++i)
2931 if (line_buffer[i] == ' ')
2933 line_buffer[i] = '-';
2934 color_buffer[i] = color;
2937 if (line_buffer[i] == ' ')
2939 line_buffer[i] = '-';
2940 color_buffer[i] = color;
2942 else if (line_buffer[i] == '>')
2944 line_buffer[i] = 'X';
2945 color_buffer[i] = color;
2948 if (line_buffer[offset] == ' ')
2950 if (address <= ji->end)
2951 line_buffer[offset] =
2952 (jump_info_min_address (ji) == address) ? ',': '+';
2953 else
2954 line_buffer[offset] =
2955 (jump_info_max_address (ji) == address) ? '\'': '+';
2956 color_buffer[offset] = color;
2959 /* Draw jump target. */
2960 else if (jump_info_is_end_address (ji, address))
2962 size_t i = offset + 1;
2964 for (; i < len - 1; ++i)
2965 if (line_buffer[i] == ' ')
2967 line_buffer[i] = '-';
2968 color_buffer[i] = color;
2971 if (line_buffer[i] == ' ')
2973 line_buffer[i] = '>';
2974 color_buffer[i] = color;
2976 else if (line_buffer[i] == '-')
2978 line_buffer[i] = 'X';
2979 color_buffer[i] = color;
2982 if (line_buffer[offset] == ' ')
2984 if (jump_info_min_address (ji) < address)
2985 line_buffer[offset] =
2986 (jump_info_max_address (ji) > address) ? '>' : '\'';
2987 else
2988 line_buffer[offset] = ',';
2989 color_buffer[offset] = color;
2992 /* Draw intermediate line segment. */
2993 else if (line_buffer[offset] == ' ')
2995 line_buffer[offset] = '|';
2996 color_buffer[offset] = color;
3000 ji = ji->next;
3004 /* Clone of disassemble_bytes to detect jumps inside a function. */
3005 /* FIXME: is this correct? Can we strip it down even further? */
3007 static struct jump_info *
3008 disassemble_jumps (struct disassemble_info * inf,
3009 disassembler_ftype disassemble_fn,
3010 bfd_vma start_offset,
3011 bfd_vma stop_offset,
3012 bfd_vma rel_offset,
3013 arelent ** relpp,
3014 arelent ** relppend)
3016 struct objdump_disasm_info *aux;
3017 struct jump_info *jumps = NULL;
3018 asection *section;
3019 bfd_vma addr_offset;
3020 unsigned int opb = inf->octets_per_byte;
3021 int octets = opb;
3022 SFILE sfile;
3024 aux = (struct objdump_disasm_info *) inf->application_data;
3025 section = inf->section;
3027 sfile.alloc = 120;
3028 sfile.buffer = (char *) xmalloc (sfile.alloc);
3029 sfile.pos = 0;
3031 inf->insn_info_valid = 0;
3032 disassemble_set_printf (inf, &sfile, (fprintf_ftype) objdump_sprintf,
3033 (fprintf_styled_ftype) objdump_styled_sprintf);
3035 addr_offset = start_offset;
3036 while (addr_offset < stop_offset)
3038 int previous_octets;
3040 /* Remember the length of the previous instruction. */
3041 previous_octets = octets;
3042 octets = 0;
3044 sfile.pos = 0;
3045 inf->bytes_per_line = 0;
3046 inf->bytes_per_chunk = 0;
3047 inf->flags = ((disassemble_all ? DISASSEMBLE_DATA : 0)
3048 | (wide_output ? WIDE_OUTPUT : 0));
3049 if (machine)
3050 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
3052 if (inf->disassembler_needs_relocs
3053 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
3054 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
3055 && relpp < relppend)
3057 bfd_signed_vma distance_to_rel;
3059 distance_to_rel = (*relpp)->address - (rel_offset + addr_offset);
3061 /* Check to see if the current reloc is associated with
3062 the instruction that we are about to disassemble. */
3063 if (distance_to_rel == 0
3064 /* FIXME: This is wrong. We are trying to catch
3065 relocs that are addressed part way through the
3066 current instruction, as might happen with a packed
3067 VLIW instruction. Unfortunately we do not know the
3068 length of the current instruction since we have not
3069 disassembled it yet. Instead we take a guess based
3070 upon the length of the previous instruction. The
3071 proper solution is to have a new target-specific
3072 disassembler function which just returns the length
3073 of an instruction at a given address without trying
3074 to display its disassembly. */
3075 || (distance_to_rel > 0
3076 && distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
3078 inf->flags |= INSN_HAS_RELOC;
3082 if (! disassemble_all
3083 && (section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
3084 == (SEC_CODE | SEC_HAS_CONTENTS))
3085 /* Set a stop_vma so that the disassembler will not read
3086 beyond the next symbol. We assume that symbols appear on
3087 the boundaries between instructions. We only do this when
3088 disassembling code of course, and when -D is in effect. */
3089 inf->stop_vma = section->vma + stop_offset;
3091 inf->stop_offset = stop_offset;
3093 /* Extract jump information. */
3094 inf->insn_info_valid = 0;
3095 disassembler_in_comment = false;
3096 octets = (*disassemble_fn) (section->vma + addr_offset, inf);
3097 /* Test if a jump was detected. */
3098 if (inf->insn_info_valid
3099 && ((inf->insn_type == dis_branch)
3100 || (inf->insn_type == dis_condbranch)
3101 || (inf->insn_type == dis_jsr)
3102 || (inf->insn_type == dis_condjsr))
3103 && (inf->target >= section->vma + start_offset)
3104 && (inf->target < section->vma + stop_offset))
3106 struct jump_info *ji =
3107 jump_info_new (section->vma + addr_offset, inf->target, -1);
3108 jump_info_add_front (ji, &jumps);
3111 inf->stop_vma = 0;
3113 addr_offset += octets / opb;
3116 disassemble_set_printf (inf, (void *) stdout, (fprintf_ftype) fprintf,
3117 (fprintf_styled_ftype) fprintf_styled);
3118 free (sfile.buffer);
3120 /* Merge jumps. */
3121 jump_info_merge (&jumps);
3122 /* Process jumps. */
3123 jump_info_sort (&jumps);
3125 /* Group jumps by level. */
3126 struct jump_info *last_jump = jumps;
3127 int max_level = -1;
3129 while (last_jump)
3131 /* The last jump is part of the next group. */
3132 struct jump_info *base = last_jump;
3133 /* Increment level. */
3134 base->level = ++max_level;
3136 /* Find jumps that can be combined on the same
3137 level, with the largest jumps tested first.
3138 This has the advantage that large jumps are on
3139 lower levels and do not intersect with small
3140 jumps that get grouped on higher levels. */
3141 struct jump_info *exchange_item = last_jump->next;
3142 struct jump_info *it = exchange_item;
3144 for (; it; it = it->next)
3146 /* Test if the jump intersects with any
3147 jump from current group. */
3148 bool ok = true;
3149 struct jump_info *it_collision;
3151 for (it_collision = base;
3152 it_collision != exchange_item;
3153 it_collision = it_collision->next)
3155 /* This jump intersects so we leave it out. */
3156 if (jump_info_intersect (it_collision, it))
3158 ok = false;
3159 break;
3163 /* Add jump to group. */
3164 if (ok)
3166 /* Move current element to the front. */
3167 if (it != exchange_item)
3169 struct jump_info *save = it->prev;
3170 jump_info_move_linked (it, exchange_item, &jumps);
3171 last_jump = it;
3172 it = save;
3174 else
3176 last_jump = exchange_item;
3177 exchange_item = exchange_item->next;
3179 last_jump->level = max_level;
3183 /* Move to next group. */
3184 last_jump = exchange_item;
3187 return jumps;
3190 /* The number of zeroes we want to see before we start skipping them.
3191 The number is arbitrarily chosen. */
3193 #define DEFAULT_SKIP_ZEROES 8
3195 /* The number of zeroes to skip at the end of a section. If the
3196 number of zeroes at the end is between SKIP_ZEROES_AT_END and
3197 SKIP_ZEROES, they will be disassembled. If there are fewer than
3198 SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic
3199 attempt to avoid disassembling zeroes inserted by section
3200 alignment. */
3202 #define DEFAULT_SKIP_ZEROES_AT_END 3
3204 static int
3205 null_print (const void * stream ATTRIBUTE_UNUSED, const char * format ATTRIBUTE_UNUSED, ...)
3207 return 1;
3210 /* Like null_print, but takes the extra STYLE argument. As this is not
3211 going to print anything, the extra argument is just ignored. */
3213 static int
3214 null_styled_print (const void * stream ATTRIBUTE_UNUSED,
3215 enum disassembler_style style ATTRIBUTE_UNUSED,
3216 const char * format ATTRIBUTE_UNUSED, ...)
3218 return 1;
3221 /* Print out jump visualization. */
3223 static void
3224 print_jump_visualisation (bfd_vma addr, int max_level, char *line_buffer,
3225 uint8_t *color_buffer)
3227 if (!line_buffer)
3228 return;
3230 jump_info_visualize_address (addr, max_level, line_buffer, color_buffer);
3232 size_t line_buffer_size = strlen (line_buffer);
3233 char last_color = 0;
3234 size_t i;
3236 for (i = 0; i <= line_buffer_size; ++i)
3238 if (color_output)
3240 uint8_t color = (i < line_buffer_size) ? color_buffer[i]: 0;
3242 if (color != last_color)
3244 if (color)
3245 if (extended_color_output)
3246 /* Use extended 8bit color, but
3247 do not choose dark colors. */
3248 printf ("\033[38;5;%dm", 124 + (color % 108));
3249 else
3250 /* Use simple terminal colors. */
3251 printf ("\033[%dm", 31 + (color % 7));
3252 else
3253 /* Clear color. */
3254 printf ("\033[0m");
3255 last_color = color;
3258 putchar ((i < line_buffer_size) ? line_buffer[i]: ' ');
3262 /* Disassemble some data in memory between given values. */
3264 static void
3265 disassemble_bytes (struct disassemble_info *inf,
3266 disassembler_ftype disassemble_fn,
3267 bool insns,
3268 bfd_byte *data,
3269 bfd_vma start_offset,
3270 bfd_vma stop_offset,
3271 bfd_vma rel_offset,
3272 arelent **relpp,
3273 arelent **relppend)
3275 struct objdump_disasm_info *aux;
3276 asection *section;
3277 unsigned int octets_per_line;
3278 unsigned int skip_addr_chars;
3279 bfd_vma addr_offset;
3280 unsigned int opb = inf->octets_per_byte;
3281 unsigned int skip_zeroes = inf->skip_zeroes;
3282 unsigned int skip_zeroes_at_end = inf->skip_zeroes_at_end;
3283 size_t octets;
3284 SFILE sfile;
3286 aux = (struct objdump_disasm_info *) inf->application_data;
3287 section = inf->section;
3289 sfile.alloc = 120;
3290 sfile.buffer = (char *) xmalloc (sfile.alloc);
3291 sfile.pos = 0;
3293 if (insn_width)
3294 octets_per_line = insn_width;
3295 else if (insns)
3296 octets_per_line = 4;
3297 else
3298 octets_per_line = 16;
3300 /* Figure out how many characters to skip at the start of an
3301 address, to make the disassembly look nicer. We discard leading
3302 zeroes in chunks of 4, ensuring that there is always a leading
3303 zero remaining. */
3304 skip_addr_chars = 0;
3305 if (!no_addresses && !prefix_addresses)
3307 char buf[30];
3309 bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
3311 while (buf[skip_addr_chars] == '0')
3312 ++skip_addr_chars;
3314 /* Don't discard zeros on overflow. */
3315 if (buf[skip_addr_chars] == '\0' && section->vma != 0)
3316 skip_addr_chars = 0;
3318 if (skip_addr_chars != 0)
3319 skip_addr_chars = (skip_addr_chars - 1) & -4;
3322 inf->insn_info_valid = 0;
3324 /* Determine maximum level. */
3325 uint8_t *color_buffer = NULL;
3326 char *line_buffer = NULL;
3327 int max_level = -1;
3329 /* Some jumps were detected. */
3330 if (detected_jumps)
3332 struct jump_info *ji;
3334 /* Find maximum jump level. */
3335 for (ji = detected_jumps; ji; ji = ji->next)
3337 if (ji->level > max_level)
3338 max_level = ji->level;
3341 /* Allocate buffers. */
3342 size_t len = (max_level + 1) * 3 + 1;
3343 line_buffer = xmalloc (len);
3344 line_buffer[len - 1] = 0;
3345 color_buffer = xmalloc (len);
3346 color_buffer[len - 1] = 0;
3349 addr_offset = start_offset;
3350 while (addr_offset < stop_offset)
3352 bool need_nl = false;
3354 octets = 0;
3356 /* Make sure we don't use relocs from previous instructions. */
3357 aux->reloc = NULL;
3359 /* If we see more than SKIP_ZEROES octets of zeroes, we just
3360 print `...'. */
3361 if (! disassemble_zeroes)
3362 for (; octets < (stop_offset - addr_offset) * opb; octets++)
3363 if (data[addr_offset * opb + octets] != 0)
3364 break;
3365 if (! disassemble_zeroes
3366 && (inf->insn_info_valid == 0
3367 || inf->branch_delay_insns == 0)
3368 && (octets >= skip_zeroes
3369 || (octets == (stop_offset - addr_offset) * opb
3370 && octets < skip_zeroes_at_end)))
3372 /* If there are more nonzero octets to follow, we only skip
3373 zeroes in multiples of 4, to try to avoid running over
3374 the start of an instruction which happens to start with
3375 zero. */
3376 if (octets != (stop_offset - addr_offset) * opb)
3377 octets &= ~3;
3379 /* If we are going to display more data, and we are displaying
3380 file offsets, then tell the user how many zeroes we skip
3381 and the file offset from where we resume dumping. */
3382 if (display_file_offsets
3383 && octets / opb < stop_offset - addr_offset)
3384 printf (_("\t... (skipping %lu zeroes, "
3385 "resuming at file offset: 0x%lx)\n"),
3386 (unsigned long) (octets / opb),
3387 (unsigned long) (section->filepos
3388 + addr_offset + octets / opb));
3389 else
3390 printf ("\t...\n");
3392 else
3394 char buf[50];
3395 unsigned int bpc = 0;
3396 unsigned int pb = 0;
3398 if (with_line_numbers || with_source_code)
3399 show_line (aux->abfd, section, addr_offset);
3401 if (no_addresses)
3402 printf ("\t");
3403 else if (!prefix_addresses)
3405 char *s;
3407 bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
3408 for (s = buf + skip_addr_chars; *s == '0'; s++)
3409 *s = ' ';
3410 if (*s == '\0')
3411 *--s = '0';
3412 printf ("%s:\t", buf + skip_addr_chars);
3414 else
3416 aux->require_sec = true;
3417 objdump_print_address (section->vma + addr_offset, inf);
3418 aux->require_sec = false;
3419 putchar (' ');
3422 print_jump_visualisation (section->vma + addr_offset,
3423 max_level, line_buffer,
3424 color_buffer);
3426 if (insns)
3428 int insn_size;
3430 sfile.pos = 0;
3431 disassemble_set_printf
3432 (inf, &sfile, (fprintf_ftype) objdump_sprintf,
3433 (fprintf_styled_ftype) objdump_styled_sprintf);
3434 inf->bytes_per_line = 0;
3435 inf->bytes_per_chunk = 0;
3436 inf->flags = ((disassemble_all ? DISASSEMBLE_DATA : 0)
3437 | (wide_output ? WIDE_OUTPUT : 0));
3438 if (machine)
3439 inf->flags |= USER_SPECIFIED_MACHINE_TYPE;
3441 if (inf->disassembler_needs_relocs
3442 && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
3443 && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
3444 && relpp < relppend)
3446 bfd_signed_vma distance_to_rel;
3447 int max_reloc_offset
3448 = aux->abfd->arch_info->max_reloc_offset_into_insn;
3450 distance_to_rel = ((*relpp)->address - rel_offset
3451 - addr_offset);
3453 insn_size = 0;
3454 if (distance_to_rel > 0
3455 && (max_reloc_offset < 0
3456 || distance_to_rel <= max_reloc_offset))
3458 /* This reloc *might* apply to the current insn,
3459 starting somewhere inside it. Discover the length
3460 of the current insn so that the check below will
3461 work. */
3462 if (insn_width)
3463 insn_size = insn_width;
3464 else
3466 /* We find the length by calling the dissassembler
3467 function with a dummy print handler. This should
3468 work unless the disassembler is not expecting to
3469 be called multiple times for the same address.
3471 This does mean disassembling the instruction
3472 twice, but we only do this when there is a high
3473 probability that there is a reloc that will
3474 affect the instruction. */
3475 disassemble_set_printf
3476 (inf, inf->stream, (fprintf_ftype) null_print,
3477 (fprintf_styled_ftype) null_styled_print);
3478 insn_size = disassemble_fn (section->vma
3479 + addr_offset, inf);
3480 disassemble_set_printf
3481 (inf, inf->stream,
3482 (fprintf_ftype) objdump_sprintf,
3483 (fprintf_styled_ftype) objdump_styled_sprintf);
3487 /* Check to see if the current reloc is associated with
3488 the instruction that we are about to disassemble. */
3489 if (distance_to_rel == 0
3490 || (distance_to_rel > 0
3491 && distance_to_rel < insn_size / (int) opb))
3493 inf->flags |= INSN_HAS_RELOC;
3494 aux->reloc = *relpp;
3498 if (! disassemble_all
3499 && ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
3500 == (SEC_CODE | SEC_HAS_CONTENTS)))
3501 /* Set a stop_vma so that the disassembler will not read
3502 beyond the next symbol. We assume that symbols appear on
3503 the boundaries between instructions. We only do this when
3504 disassembling code of course, and when -D is in effect. */
3505 inf->stop_vma = section->vma + stop_offset;
3507 inf->stop_offset = stop_offset;
3508 disassembler_in_comment = false;
3509 insn_size = (*disassemble_fn) (section->vma + addr_offset, inf);
3510 octets = insn_size;
3512 inf->stop_vma = 0;
3513 disassemble_set_printf (inf, stdout, (fprintf_ftype) fprintf,
3514 (fprintf_styled_ftype) fprintf_styled);
3515 if (insn_width == 0 && inf->bytes_per_line != 0)
3516 octets_per_line = inf->bytes_per_line;
3517 if (insn_size < (int) opb)
3519 if (sfile.pos)
3520 printf ("%s\n", sfile.buffer);
3521 if (insn_size >= 0)
3523 non_fatal (_("disassemble_fn returned length %d"),
3524 insn_size);
3525 exit_status = 1;
3527 break;
3530 else
3532 bfd_vma j;
3534 octets = octets_per_line;
3535 if (octets / opb > stop_offset - addr_offset)
3536 octets = (stop_offset - addr_offset) * opb;
3538 for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
3540 if (ISPRINT (data[j]))
3541 buf[j - addr_offset * opb] = data[j];
3542 else
3543 buf[j - addr_offset * opb] = '.';
3545 buf[j - addr_offset * opb] = '\0';
3548 if (prefix_addresses
3549 ? show_raw_insn > 0
3550 : show_raw_insn >= 0)
3552 bfd_vma j;
3554 /* If ! prefix_addresses and ! wide_output, we print
3555 octets_per_line octets per line. */
3556 pb = octets;
3557 if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
3558 pb = octets_per_line;
3560 if (inf->bytes_per_chunk)
3561 bpc = inf->bytes_per_chunk;
3562 else
3563 bpc = 1;
3565 for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc)
3567 /* PR 21580: Check for a buffer ending early. */
3568 if (j + bpc <= stop_offset * opb)
3570 unsigned int k;
3572 if (inf->display_endian == BFD_ENDIAN_LITTLE)
3574 for (k = bpc; k-- != 0; )
3575 printf ("%02x", (unsigned) data[j + k]);
3577 else
3579 for (k = 0; k < bpc; k++)
3580 printf ("%02x", (unsigned) data[j + k]);
3583 putchar (' ');
3586 for (; pb < octets_per_line; pb += bpc)
3588 unsigned int k;
3590 for (k = 0; k < bpc; k++)
3591 printf (" ");
3592 putchar (' ');
3595 /* Separate raw data from instruction by extra space. */
3596 if (insns)
3597 putchar ('\t');
3598 else
3599 printf (" ");
3602 if (! insns)
3603 printf ("%s", buf);
3604 else if (sfile.pos)
3605 printf ("%s", sfile.buffer);
3607 if (prefix_addresses
3608 ? show_raw_insn > 0
3609 : show_raw_insn >= 0)
3611 while (pb < octets)
3613 bfd_vma j;
3614 char *s;
3616 putchar ('\n');
3617 j = addr_offset * opb + pb;
3619 if (no_addresses)
3620 printf ("\t");
3621 else
3623 bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
3624 for (s = buf + skip_addr_chars; *s == '0'; s++)
3625 *s = ' ';
3626 if (*s == '\0')
3627 *--s = '0';
3628 printf ("%s:\t", buf + skip_addr_chars);
3631 print_jump_visualisation (section->vma + j / opb,
3632 max_level, line_buffer,
3633 color_buffer);
3635 pb += octets_per_line;
3636 if (pb > octets)
3637 pb = octets;
3638 for (; j < addr_offset * opb + pb; j += bpc)
3640 /* PR 21619: Check for a buffer ending early. */
3641 if (j + bpc <= stop_offset * opb)
3643 unsigned int k;
3645 if (inf->display_endian == BFD_ENDIAN_LITTLE)
3647 for (k = bpc; k-- != 0; )
3648 printf ("%02x", (unsigned) data[j + k]);
3650 else
3652 for (k = 0; k < bpc; k++)
3653 printf ("%02x", (unsigned) data[j + k]);
3656 putchar (' ');
3661 if (!wide_output)
3662 putchar ('\n');
3663 else
3664 need_nl = true;
3667 while (relpp < relppend
3668 && (*relpp)->address < rel_offset + addr_offset + octets / opb)
3670 if (dump_reloc_info || dump_dynamic_reloc_info)
3672 arelent *q;
3674 q = *relpp;
3676 if (wide_output)
3677 putchar ('\t');
3678 else
3679 printf ("\t\t\t");
3681 if (!no_addresses)
3683 objdump_print_value (section->vma - rel_offset + q->address,
3684 inf, true);
3685 printf (": ");
3688 if (q->howto == NULL)
3689 printf ("*unknown*\t");
3690 else if (q->howto->name)
3691 printf ("%s\t", q->howto->name);
3692 else
3693 printf ("%d\t", q->howto->type);
3695 if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
3696 printf ("*unknown*");
3697 else
3699 const char *sym_name;
3701 sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
3702 if (sym_name != NULL && *sym_name != '\0')
3703 objdump_print_symname (aux->abfd, inf, *q->sym_ptr_ptr);
3704 else
3706 asection *sym_sec;
3708 sym_sec = bfd_asymbol_section (*q->sym_ptr_ptr);
3709 sym_name = bfd_section_name (sym_sec);
3710 if (sym_name == NULL || *sym_name == '\0')
3711 sym_name = "*unknown*";
3712 printf ("%s", sanitize_string (sym_name));
3716 if (q->addend)
3718 bfd_vma addend = q->addend;
3719 if ((bfd_signed_vma) addend < 0)
3721 printf ("-0x");
3722 addend = -addend;
3724 else
3725 printf ("+0x");
3726 objdump_print_value (addend, inf, true);
3729 printf ("\n");
3730 need_nl = false;
3732 ++relpp;
3735 if (need_nl)
3736 printf ("\n");
3738 addr_offset += octets / opb;
3741 free (sfile.buffer);
3742 free (line_buffer);
3743 free (color_buffer);
3746 static void
3747 disassemble_section (bfd *abfd, asection *section, void *inf)
3749 const struct elf_backend_data *bed;
3750 bfd_vma sign_adjust = 0;
3751 struct disassemble_info *pinfo = (struct disassemble_info *) inf;
3752 struct objdump_disasm_info *paux;
3753 unsigned int opb = pinfo->octets_per_byte;
3754 bfd_byte *data = NULL;
3755 bfd_size_type datasize = 0;
3756 arelent **rel_pp = NULL;
3757 arelent **rel_ppstart = NULL;
3758 arelent **rel_ppend;
3759 bfd_vma stop_offset;
3760 asymbol *sym = NULL;
3761 long place = 0;
3762 long rel_count;
3763 bfd_vma rel_offset;
3764 unsigned long addr_offset;
3765 bool do_print;
3766 enum loop_control
3768 stop_offset_reached,
3769 function_sym,
3770 next_sym
3771 } loop_until;
3773 if (only_list == NULL)
3775 /* Sections that do not contain machine
3776 code are not normally disassembled. */
3777 if ((section->flags & SEC_HAS_CONTENTS) == 0)
3778 return;
3780 if (! disassemble_all
3781 && (section->flags & SEC_CODE) == 0)
3782 return;
3784 else if (!process_section_p (section))
3785 return;
3787 datasize = bfd_section_size (section);
3788 if (datasize == 0)
3789 return;
3791 if (start_address == (bfd_vma) -1
3792 || start_address < section->vma)
3793 addr_offset = 0;
3794 else
3795 addr_offset = start_address - section->vma;
3797 if (stop_address == (bfd_vma) -1)
3798 stop_offset = datasize / opb;
3799 else
3801 if (stop_address < section->vma)
3802 stop_offset = 0;
3803 else
3804 stop_offset = stop_address - section->vma;
3805 if (stop_offset > datasize / opb)
3806 stop_offset = datasize / opb;
3809 if (addr_offset >= stop_offset)
3810 return;
3812 /* Decide which set of relocs to use. Load them if necessary. */
3813 paux = (struct objdump_disasm_info *) pinfo->application_data;
3814 if (pinfo->dynrelbuf && dump_dynamic_reloc_info)
3816 rel_pp = pinfo->dynrelbuf;
3817 rel_count = pinfo->dynrelcount;
3818 /* Dynamic reloc addresses are absolute, non-dynamic are section
3819 relative. REL_OFFSET specifies the reloc address corresponding
3820 to the start of this section. */
3821 rel_offset = section->vma;
3823 else
3825 rel_count = 0;
3826 rel_pp = NULL;
3827 rel_offset = 0;
3829 if ((section->flags & SEC_RELOC) != 0
3830 && (dump_reloc_info || pinfo->disassembler_needs_relocs))
3832 long relsize;
3834 relsize = bfd_get_reloc_upper_bound (abfd, section);
3835 if (relsize < 0)
3836 my_bfd_nonfatal (bfd_get_filename (abfd));
3838 if (relsize > 0)
3840 rel_pp = (arelent **) xmalloc (relsize);
3841 rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
3842 if (rel_count < 0)
3844 my_bfd_nonfatal (bfd_get_filename (abfd));
3845 free (rel_pp);
3846 rel_pp = NULL;
3847 rel_count = 0;
3849 else if (rel_count > 1)
3850 /* Sort the relocs by address. */
3851 qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
3852 rel_ppstart = rel_pp;
3856 rel_ppend = PTR_ADD (rel_pp, rel_count);
3858 if (!bfd_malloc_and_get_section (abfd, section, &data))
3860 non_fatal (_("Reading section %s failed because: %s"),
3861 section->name, bfd_errmsg (bfd_get_error ()));
3862 free (rel_ppstart);
3863 return;
3866 pinfo->buffer = data;
3867 pinfo->buffer_vma = section->vma;
3868 pinfo->buffer_length = datasize;
3869 pinfo->section = section;
3871 /* Sort the symbols into value and section order. */
3872 compare_section = section;
3873 if (sorted_symcount > 1)
3874 qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
3876 printf (_("\nDisassembly of section %s:\n"), sanitize_string (section->name));
3878 /* Find the nearest symbol forwards from our current position. */
3879 paux->require_sec = true;
3880 sym = (asymbol *) find_symbol_for_address (section->vma + addr_offset,
3881 (struct disassemble_info *) inf,
3882 &place);
3883 paux->require_sec = false;
3885 /* PR 9774: If the target used signed addresses then we must make
3886 sure that we sign extend the value that we calculate for 'addr'
3887 in the loop below. */
3888 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
3889 && (bed = get_elf_backend_data (abfd)) != NULL
3890 && bed->sign_extend_vma)
3891 sign_adjust = (bfd_vma) 1 << (bed->s->arch_size - 1);
3893 /* Disassemble a block of instructions up to the address associated with
3894 the symbol we have just found. Then print the symbol and find the
3895 next symbol on. Repeat until we have disassembled the entire section
3896 or we have reached the end of the address range we are interested in. */
3897 do_print = paux->symbol == NULL;
3898 loop_until = stop_offset_reached;
3900 while (addr_offset < stop_offset)
3902 bfd_vma addr;
3903 asymbol *nextsym;
3904 bfd_vma nextstop_offset;
3905 bool insns;
3907 /* Skip over the relocs belonging to addresses below the
3908 start address. */
3909 while (rel_pp < rel_ppend
3910 && (*rel_pp)->address < rel_offset + addr_offset)
3911 ++rel_pp;
3913 addr = section->vma + addr_offset;
3914 addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
3916 if (sym != NULL && bfd_asymbol_value (sym) <= addr)
3918 int x;
3920 for (x = place;
3921 (x < sorted_symcount
3922 && (bfd_asymbol_value (sorted_syms[x]) <= addr));
3923 ++x)
3924 continue;
3926 pinfo->symbols = sorted_syms + place;
3927 pinfo->num_symbols = x - place;
3928 pinfo->symtab_pos = place;
3930 else
3932 pinfo->symbols = NULL;
3933 pinfo->num_symbols = 0;
3934 pinfo->symtab_pos = -1;
3937 /* If we are only disassembling from a specific symbol,
3938 check to see if we should start or stop displaying. */
3939 if (sym && paux->symbol)
3941 if (do_print)
3943 /* See if we should stop printing. */
3944 switch (loop_until)
3946 case function_sym:
3947 if (sym->flags & BSF_FUNCTION)
3948 do_print = false;
3949 break;
3951 case stop_offset_reached:
3952 /* Handled by the while loop. */
3953 break;
3955 case next_sym:
3956 /* FIXME: There is an implicit assumption here
3957 that the name of sym is different from
3958 paux->symbol. */
3959 if (! bfd_is_local_label (abfd, sym))
3960 do_print = false;
3961 break;
3964 else
3966 const char * name = bfd_asymbol_name (sym);
3967 char * alloc = NULL;
3969 if (do_demangle && name[0] != '\0')
3971 /* Demangle the name. */
3972 alloc = bfd_demangle (abfd, name, demangle_flags);
3973 if (alloc != NULL)
3974 name = alloc;
3977 /* We are not currently printing. Check to see
3978 if the current symbol matches the requested symbol. */
3979 if (streq (name, paux->symbol)
3980 && bfd_asymbol_value (sym) <= addr)
3982 do_print = true;
3984 loop_until = next_sym;
3985 if (sym->flags & BSF_FUNCTION)
3987 loop_until = function_sym;
3989 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
3991 bfd_size_type fsize =
3992 ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
3993 bfd_vma fend =
3994 bfd_asymbol_value (sym) - section->vma + fsize;
3995 if (fend > addr_offset && fend <= stop_offset)
3997 /* Sym is a function symbol with a valid
3998 size associated with it. Disassemble
3999 to the end of the function. */
4000 stop_offset = fend;
4001 loop_until = stop_offset_reached;
4007 free (alloc);
4011 if (! prefix_addresses && do_print)
4013 pinfo->fprintf_func (pinfo->stream, "\n");
4014 objdump_print_addr_with_sym (abfd, section, sym, addr,
4015 pinfo, false);
4016 pinfo->fprintf_func (pinfo->stream, ":\n");
4018 if (sym != NULL && show_all_symbols)
4020 for (++place; place < sorted_symcount; place++)
4022 sym = sorted_syms[place];
4024 if (bfd_asymbol_value (sym) != addr)
4025 break;
4026 if (! pinfo->symbol_is_valid (sym, pinfo))
4027 continue;
4028 if (strcmp (bfd_section_name (sym->section), bfd_section_name (section)) != 0)
4029 break;
4031 objdump_print_addr_with_sym (abfd, section, sym, addr, pinfo, false);
4032 pinfo->fprintf_func (pinfo->stream, ":\n");
4037 if (sym != NULL && bfd_asymbol_value (sym) > addr)
4038 nextsym = sym;
4039 else if (sym == NULL)
4040 nextsym = NULL;
4041 else
4043 #define is_valid_next_sym(SYM) \
4044 (strcmp (bfd_section_name ((SYM)->section), bfd_section_name (section)) == 0 \
4045 && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
4046 && pinfo->symbol_is_valid (SYM, pinfo))
4048 /* Search forward for the next appropriate symbol in
4049 SECTION. Note that all the symbols are sorted
4050 together into one big array, and that some sections
4051 may have overlapping addresses. */
4052 while (place < sorted_symcount
4053 && ! is_valid_next_sym (sorted_syms [place]))
4054 ++place;
4056 if (place >= sorted_symcount)
4057 nextsym = NULL;
4058 else
4059 nextsym = sorted_syms[place];
4062 if (sym != NULL && bfd_asymbol_value (sym) > addr)
4063 nextstop_offset = bfd_asymbol_value (sym) - section->vma;
4064 else if (nextsym == NULL)
4065 nextstop_offset = stop_offset;
4066 else
4067 nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
4069 if (nextstop_offset > stop_offset
4070 || nextstop_offset <= addr_offset)
4071 nextstop_offset = stop_offset;
4073 /* If a symbol is explicitly marked as being an object
4074 rather than a function, just dump the bytes without
4075 disassembling them. */
4076 if (disassemble_all
4077 || sym == NULL
4078 || sym->section != section
4079 || bfd_asymbol_value (sym) > addr
4080 || ((sym->flags & BSF_OBJECT) == 0
4081 && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
4082 == NULL)
4083 && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
4084 == NULL))
4085 || (sym->flags & BSF_FUNCTION) != 0)
4086 insns = true;
4087 else
4088 insns = false;
4090 if (do_print)
4092 /* Resolve symbol name. */
4093 if (visualize_jumps && abfd && sym && sym->name)
4095 struct disassemble_info di;
4096 SFILE sf;
4098 sf.alloc = strlen (sym->name) + 40;
4099 sf.buffer = (char*) xmalloc (sf.alloc);
4100 sf.pos = 0;
4101 disassemble_set_printf
4102 (&di, &sf, (fprintf_ftype) objdump_sprintf,
4103 (fprintf_styled_ftype) objdump_styled_sprintf);
4105 objdump_print_symname (abfd, &di, sym);
4107 /* Fetch jump information. */
4108 detected_jumps = disassemble_jumps (pinfo, paux->disassemble_fn,
4109 addr_offset, nextstop_offset,
4110 rel_offset, rel_pp, rel_ppend);
4111 /* Free symbol name. */
4112 free (sf.buffer);
4115 /* Add jumps to output. */
4116 disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
4117 addr_offset, nextstop_offset,
4118 rel_offset, rel_pp, rel_ppend);
4120 /* Free jumps. */
4121 while (detected_jumps)
4123 detected_jumps = jump_info_free (detected_jumps);
4127 addr_offset = nextstop_offset;
4128 sym = nextsym;
4131 free (data);
4132 free (rel_ppstart);
4135 /* Disassemble the contents of an object file. */
4137 static void
4138 disassemble_data (bfd *abfd)
4140 struct disassemble_info disasm_info;
4141 struct objdump_disasm_info aux;
4142 long i;
4144 print_files = NULL;
4145 prev_functionname = NULL;
4146 prev_line = -1;
4147 prev_discriminator = 0;
4149 /* We make a copy of syms to sort. We don't want to sort syms
4150 because that will screw up the relocs. */
4151 sorted_symcount = symcount ? symcount : dynsymcount;
4152 sorted_syms = (asymbol **) xmalloc ((sorted_symcount + synthcount)
4153 * sizeof (asymbol *));
4154 if (sorted_symcount != 0)
4156 memcpy (sorted_syms, symcount ? syms : dynsyms,
4157 sorted_symcount * sizeof (asymbol *));
4159 sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
4162 for (i = 0; i < synthcount; ++i)
4164 sorted_syms[sorted_symcount] = synthsyms + i;
4165 ++sorted_symcount;
4168 init_disassemble_info (&disasm_info, stdout, (fprintf_ftype) fprintf,
4169 (fprintf_styled_ftype) fprintf_styled);
4170 disasm_info.application_data = (void *) &aux;
4171 aux.abfd = abfd;
4172 aux.require_sec = false;
4173 disasm_info.dynrelbuf = NULL;
4174 disasm_info.dynrelcount = 0;
4175 aux.reloc = NULL;
4176 aux.symbol = disasm_sym;
4178 disasm_info.print_address_func = objdump_print_address;
4179 disasm_info.symbol_at_address_func = objdump_symbol_at_address;
4181 if (machine != NULL)
4183 const bfd_arch_info_type *inf = bfd_scan_arch (machine);
4185 if (inf == NULL)
4187 non_fatal (_("can't use supplied machine %s"), machine);
4188 exit_status = 1;
4190 else
4191 abfd->arch_info = inf;
4194 if (endian != BFD_ENDIAN_UNKNOWN)
4196 struct bfd_target *xvec;
4198 xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
4199 memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
4200 xvec->byteorder = endian;
4201 abfd->xvec = xvec;
4204 /* Use libopcodes to locate a suitable disassembler. */
4205 aux.disassemble_fn = disassembler (bfd_get_arch (abfd),
4206 bfd_big_endian (abfd),
4207 bfd_get_mach (abfd), abfd);
4208 if (!aux.disassemble_fn)
4210 non_fatal (_("can't disassemble for architecture %s\n"),
4211 bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
4212 exit_status = 1;
4213 free (sorted_syms);
4214 return;
4217 disasm_info.flavour = bfd_get_flavour (abfd);
4218 disasm_info.arch = bfd_get_arch (abfd);
4219 disasm_info.mach = bfd_get_mach (abfd);
4220 disasm_info.disassembler_options = disassembler_options;
4221 disasm_info.octets_per_byte = bfd_octets_per_byte (abfd, NULL);
4222 disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
4223 disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
4224 disasm_info.disassembler_needs_relocs = false;
4226 if (bfd_big_endian (abfd))
4227 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
4228 else if (bfd_little_endian (abfd))
4229 disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_LITTLE;
4230 else
4231 /* ??? Aborting here seems too drastic. We could default to big or little
4232 instead. */
4233 disasm_info.endian = BFD_ENDIAN_UNKNOWN;
4235 disasm_info.endian_code = disasm_info.endian;
4237 /* Allow the target to customize the info structure. */
4238 disassemble_init_for_target (& disasm_info);
4240 /* Pre-load the dynamic relocs as we may need them during the disassembly. */
4241 long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4243 if (relsize > 0)
4245 disasm_info.dynrelbuf = (arelent **) xmalloc (relsize);
4246 disasm_info.dynrelcount
4247 = bfd_canonicalize_dynamic_reloc (abfd, disasm_info.dynrelbuf, dynsyms);
4248 if (disasm_info.dynrelcount < 0)
4250 my_bfd_nonfatal (bfd_get_filename (abfd));
4251 free (disasm_info.dynrelbuf);
4252 disasm_info.dynrelbuf = NULL;
4253 disasm_info.dynrelcount = 0;
4255 else if (disasm_info.dynrelcount > 1)
4256 /* Sort the relocs by address. */
4257 qsort (disasm_info.dynrelbuf, disasm_info.dynrelcount,
4258 sizeof (arelent *), compare_relocs);
4261 disasm_info.symtab = sorted_syms;
4262 disasm_info.symtab_size = sorted_symcount;
4264 bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
4266 free (disasm_info.dynrelbuf);
4267 disasm_info.dynrelbuf = NULL;
4268 free (sorted_syms);
4269 disassemble_free_target (&disasm_info);
4272 static bool
4273 load_specific_debug_section (enum dwarf_section_display_enum debug,
4274 asection *sec, void *file)
4276 struct dwarf_section *section = &debug_displays [debug].section;
4277 bfd *abfd = (bfd *) file;
4278 bfd_byte *contents;
4279 bfd_size_type amt;
4280 size_t alloced;
4281 bool ret;
4283 if (section->start != NULL)
4285 /* If it is already loaded, do nothing. */
4286 if (streq (section->filename, bfd_get_filename (abfd)))
4287 return true;
4288 free (section->start);
4289 section->start = NULL;
4292 section->filename = bfd_get_filename (abfd);
4293 section->reloc_info = NULL;
4294 section->num_relocs = 0;
4295 section->address = bfd_section_vma (sec);
4296 section->size = bfd_section_size (sec);
4297 /* PR 24360: On 32-bit hosts sizeof (size_t) < sizeof (bfd_size_type). */
4298 alloced = amt = section->size + 1;
4299 if (alloced != amt
4300 || alloced == 0
4301 || bfd_section_size_insane (abfd, sec))
4303 printf (_("\nSection '%s' has an invalid size: %#" PRIx64 ".\n"),
4304 sanitize_string (section->name),
4305 section->size);
4306 free_debug_section (debug);
4307 return false;
4310 ret = false;
4311 if ((sec->flags & SEC_HAS_CONTENTS) != 0)
4313 section->start = contents = xmalloc (alloced);
4314 /* Ensure any string section has a terminating NUL. */
4315 section->start[section->size] = 0;
4317 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4318 && debug_displays [debug].relocate)
4320 ret = bfd_simple_get_relocated_section_contents (abfd,
4321 sec,
4322 section->start,
4323 syms) != NULL;
4324 if (ret)
4326 long reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
4328 if (reloc_size > 0)
4330 long reloc_count;
4331 arelent **relocs;
4333 relocs = (arelent **) xmalloc (reloc_size);
4335 reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, syms);
4336 if (reloc_count <= 0)
4337 free (relocs);
4338 else
4340 section->reloc_info = relocs;
4341 section->num_relocs = reloc_count;
4346 else
4347 ret = bfd_get_full_section_contents (abfd, sec, &contents);
4350 if (!ret)
4352 printf (_("\nCan't get contents for section '%s'.\n"),
4353 sanitize_string (section->name));
4354 free_debug_section (debug);
4355 return false;
4358 return true;
4361 bool
4362 reloc_at (struct dwarf_section * dsec, uint64_t offset)
4364 arelent ** relocs;
4365 arelent * rp;
4367 if (dsec == NULL || dsec->reloc_info == NULL)
4368 return false;
4370 relocs = (arelent **) dsec->reloc_info;
4372 for (; (rp = * relocs) != NULL; ++ relocs)
4373 if (rp->address == offset)
4374 return true;
4376 return false;
4379 bool
4380 load_debug_section (enum dwarf_section_display_enum debug, void *file)
4382 struct dwarf_section *section = &debug_displays [debug].section;
4383 bfd *abfd = (bfd *) file;
4384 asection *sec;
4385 const char *name;
4387 if (!dump_any_debugging)
4388 return false;
4390 /* If it is already loaded, do nothing. */
4391 if (section->start != NULL)
4393 if (streq (section->filename, bfd_get_filename (abfd)))
4394 return true;
4396 /* Locate the debug section. */
4397 name = section->uncompressed_name;
4398 sec = bfd_get_section_by_name (abfd, name);
4399 if (sec == NULL)
4401 name = section->compressed_name;
4402 if (*name)
4403 sec = bfd_get_section_by_name (abfd, name);
4405 if (sec == NULL)
4407 name = section->xcoff_name;
4408 if (*name)
4409 sec = bfd_get_section_by_name (abfd, name);
4411 if (sec == NULL)
4412 return false;
4414 section->name = name;
4415 return load_specific_debug_section (debug, sec, file);
4418 void
4419 free_debug_section (enum dwarf_section_display_enum debug)
4421 struct dwarf_section *section = &debug_displays [debug].section;
4423 free ((char *) section->start);
4424 section->start = NULL;
4425 section->address = 0;
4426 section->size = 0;
4427 free ((char*) section->reloc_info);
4428 section->reloc_info = NULL;
4429 section->num_relocs= 0;
4432 void
4433 close_debug_file (void * file)
4435 bfd * abfd = (bfd *) file;
4437 bfd_close (abfd);
4440 void *
4441 open_debug_file (const char * pathname)
4443 bfd * data;
4445 data = bfd_openr (pathname, NULL);
4446 if (data == NULL)
4447 return NULL;
4449 /* Decompress sections unless dumping the section contents. */
4450 if (!dump_section_contents || decompressed_dumps)
4451 data->flags |= BFD_DECOMPRESS;
4453 if (! bfd_check_format (data, bfd_object))
4454 return NULL;
4456 return data;
4459 static void
4460 dump_dwarf_section (bfd *abfd, asection *section,
4461 void *arg)
4463 const char *name = bfd_section_name (section);
4464 const char *match;
4465 int i;
4466 bool is_mainfile = *(bool *) arg;
4468 if (*name == 0)
4469 return;
4471 if (!is_mainfile && !process_links
4472 && (section->flags & SEC_DEBUGGING) == 0)
4473 return;
4475 if (startswith (name, ".gnu.linkonce.wi."))
4476 match = ".debug_info";
4477 else
4478 match = name;
4480 for (i = 0; i < max; i++)
4481 if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
4482 || strcmp (debug_displays [i].section.compressed_name, match) == 0
4483 || strcmp (debug_displays [i].section.xcoff_name, match) == 0)
4484 && debug_displays [i].enabled != NULL
4485 && *debug_displays [i].enabled)
4487 struct dwarf_section *sec = &debug_displays [i].section;
4489 if (strcmp (sec->uncompressed_name, match) == 0)
4490 sec->name = sec->uncompressed_name;
4491 else if (strcmp (sec->compressed_name, match) == 0)
4492 sec->name = sec->compressed_name;
4493 else
4494 sec->name = sec->xcoff_name;
4495 if (load_specific_debug_section ((enum dwarf_section_display_enum) i,
4496 section, abfd))
4498 debug_displays [i].display (sec, abfd);
4500 if (i != info && i != abbrev)
4501 free_debug_section ((enum dwarf_section_display_enum) i);
4503 break;
4507 /* Dump the dwarf debugging information. */
4509 static void
4510 dump_dwarf (bfd *abfd, bool is_mainfile)
4512 /* The byte_get pointer should have been set at the start of dump_bfd(). */
4513 if (byte_get == NULL)
4515 warn (_("File %s does not contain any dwarf debug information\n"),
4516 bfd_get_filename (abfd));
4517 return;
4520 switch (bfd_get_arch (abfd))
4522 case bfd_arch_s12z:
4523 /* S12Z has a 24 bit address space. But the only known
4524 producer of dwarf_info encodes addresses into 32 bits. */
4525 eh_addr_size = 4;
4526 break;
4528 default:
4529 eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
4530 break;
4533 init_dwarf_regnames_by_bfd_arch_and_mach (bfd_get_arch (abfd),
4534 bfd_get_mach (abfd));
4536 bfd_map_over_sections (abfd, dump_dwarf_section, (void *) &is_mainfile);
4539 /* Read ABFD's section SECT_NAME into *CONTENTS, and return a pointer to
4540 the section. Return NULL on failure. */
4542 static asection *
4543 read_section (bfd *abfd, const char *sect_name, bfd_byte **contents)
4545 asection *sec;
4547 *contents = NULL;
4548 sec = bfd_get_section_by_name (abfd, sect_name);
4549 if (sec == NULL)
4551 printf (_("No %s section present\n\n"), sanitize_string (sect_name));
4552 return NULL;
4555 if ((bfd_section_flags (sec) & SEC_HAS_CONTENTS) == 0)
4556 bfd_set_error (bfd_error_no_contents);
4557 else if (bfd_malloc_and_get_section (abfd, sec, contents))
4558 return sec;
4560 non_fatal (_("reading %s section of %s failed: %s"),
4561 sect_name, bfd_get_filename (abfd),
4562 bfd_errmsg (bfd_get_error ()));
4563 exit_status = 1;
4564 return NULL;
4567 /* Stabs entries use a 12 byte format:
4568 4 byte string table index
4569 1 byte stab type
4570 1 byte stab other field
4571 2 byte stab desc field
4572 4 byte stab value
4573 FIXME: This will have to change for a 64 bit object format. */
4575 #define STRDXOFF (0)
4576 #define TYPEOFF (4)
4577 #define OTHEROFF (5)
4578 #define DESCOFF (6)
4579 #define VALOFF (8)
4580 #define STABSIZE (12)
4582 /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
4583 using string table section STRSECT_NAME (in `strtab'). */
4585 static void
4586 print_section_stabs (bfd *abfd,
4587 const char *stabsect_name,
4588 unsigned *string_offset_ptr)
4590 int i;
4591 unsigned file_string_table_offset = 0;
4592 unsigned next_file_string_table_offset = *string_offset_ptr;
4593 bfd_byte *stabp, *stabs_end;
4595 stabp = stabs;
4596 stabs_end = PTR_ADD (stabp, stab_size);
4598 printf (_("Contents of %s section:\n\n"), sanitize_string (stabsect_name));
4599 printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
4601 /* Loop through all symbols and print them.
4603 We start the index at -1 because there is a dummy symbol on
4604 the front of stabs-in-{coff,elf} sections that supplies sizes. */
4605 for (i = -1; (size_t) (stabs_end - stabp) >= STABSIZE; stabp += STABSIZE, i++)
4607 const char *name;
4608 unsigned long strx;
4609 unsigned char type, other;
4610 unsigned short desc;
4611 bfd_vma value;
4613 strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
4614 type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
4615 other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
4616 desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
4617 value = bfd_h_get_32 (abfd, stabp + VALOFF);
4619 printf ("\n%-6d ", i);
4620 /* Either print the stab name, or, if unnamed, print its number
4621 again (makes consistent formatting for tools like awk). */
4622 name = bfd_get_stab_name (type);
4623 if (name != NULL)
4624 printf ("%-6s", sanitize_string (name));
4625 else if (type == N_UNDF)
4626 printf ("HdrSym");
4627 else
4628 printf ("%-6d", type);
4629 printf (" %-6d %-6d ", other, desc);
4630 bfd_printf_vma (abfd, value);
4631 printf (" %-6lu", strx);
4633 /* Symbols with type == 0 (N_UNDF) specify the length of the
4634 string table associated with this file. We use that info
4635 to know how to relocate the *next* file's string table indices. */
4636 if (type == N_UNDF)
4638 file_string_table_offset = next_file_string_table_offset;
4639 next_file_string_table_offset += value;
4641 else
4643 bfd_size_type amt = strx + file_string_table_offset;
4645 /* Using the (possibly updated) string table offset, print the
4646 string (if any) associated with this symbol. */
4647 if (amt < stabstr_size)
4648 /* PR 17512: file: 079-79389-0.001:0.1.
4649 FIXME: May need to sanitize this string before displaying. */
4650 printf (" %.*s", (int)(stabstr_size - amt), strtab + amt);
4651 else
4652 printf (" *");
4655 printf ("\n\n");
4656 *string_offset_ptr = next_file_string_table_offset;
4659 typedef struct
4661 const char * section_name;
4662 const char * string_section_name;
4663 unsigned string_offset;
4665 stab_section_names;
4667 static void
4668 find_stabs_section (bfd *abfd, asection *section, void *names)
4670 int len;
4671 stab_section_names * sought = (stab_section_names *) names;
4673 /* Check for section names for which stabsect_name is a prefix, to
4674 handle .stab.N, etc. */
4675 len = strlen (sought->section_name);
4677 /* If the prefix matches, and the files section name ends with a
4678 nul or a digit, then we match. I.e., we want either an exact
4679 match or a section followed by a number. */
4680 if (strncmp (sought->section_name, section->name, len) == 0
4681 && (section->name[len] == 0
4682 || (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
4684 asection *s;
4685 if (strtab == NULL)
4687 s = read_section (abfd, sought->string_section_name, &strtab);
4688 if (s != NULL)
4689 stabstr_size = bfd_section_size (s);
4692 if (strtab)
4694 s = read_section (abfd, section->name, &stabs);
4695 if (s != NULL)
4697 stab_size = bfd_section_size (s);
4698 print_section_stabs (abfd, section->name, &sought->string_offset);
4699 free (stabs);
4705 static void
4706 dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
4708 stab_section_names s;
4710 s.section_name = stabsect_name;
4711 s.string_section_name = strsect_name;
4712 s.string_offset = 0;
4714 bfd_map_over_sections (abfd, find_stabs_section, & s);
4716 free (strtab);
4717 strtab = NULL;
4720 /* Dump the any sections containing stabs debugging information. */
4722 static void
4723 dump_stabs (bfd *abfd)
4725 dump_stabs_section (abfd, ".stab", ".stabstr");
4726 dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
4727 dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
4729 /* For Darwin. */
4730 dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
4732 dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
4735 static void
4736 dump_bfd_header (bfd *abfd)
4738 char *comma = "";
4740 printf (_("architecture: %s, "),
4741 bfd_printable_arch_mach (bfd_get_arch (abfd),
4742 bfd_get_mach (abfd)));
4743 printf (_("flags 0x%08x:\n"), abfd->flags & ~BFD_FLAGS_FOR_BFD_USE_MASK);
4745 #define PF(x, y) if (abfd->flags & x) {printf ("%s%s", comma, y); comma=", ";}
4746 PF (HAS_RELOC, "HAS_RELOC");
4747 PF (EXEC_P, "EXEC_P");
4748 PF (HAS_LINENO, "HAS_LINENO");
4749 PF (HAS_DEBUG, "HAS_DEBUG");
4750 PF (HAS_SYMS, "HAS_SYMS");
4751 PF (HAS_LOCALS, "HAS_LOCALS");
4752 PF (DYNAMIC, "DYNAMIC");
4753 PF (WP_TEXT, "WP_TEXT");
4754 PF (D_PAGED, "D_PAGED");
4755 PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
4756 printf (_("\nstart address 0x"));
4757 bfd_printf_vma (abfd, abfd->start_address);
4758 printf ("\n");
4762 #ifdef ENABLE_LIBCTF
4763 /* Formatting callback function passed to ctf_dump. Returns either the pointer
4764 it is passed, or a pointer to newly-allocated storage, in which case
4765 dump_ctf() will free it when it no longer needs it. */
4767 static char *
4768 dump_ctf_indent_lines (ctf_sect_names_t sect ATTRIBUTE_UNUSED,
4769 char *s, void *arg)
4771 const char *blanks = arg;
4772 return xasprintf ("%s%s", blanks, s);
4775 /* Make a ctfsect suitable for ctf_bfdopen_ctfsect(). */
4776 static ctf_sect_t
4777 make_ctfsect (const char *name, bfd_byte *data,
4778 bfd_size_type size)
4780 ctf_sect_t ctfsect;
4782 ctfsect.cts_name = name;
4783 ctfsect.cts_entsize = 1;
4784 ctfsect.cts_size = size;
4785 ctfsect.cts_data = data;
4787 return ctfsect;
4790 /* Dump CTF errors/warnings. */
4791 static void
4792 dump_ctf_errs (ctf_dict_t *fp)
4794 ctf_next_t *it = NULL;
4795 char *errtext;
4796 int is_warning;
4797 int err;
4799 /* Dump accumulated errors and warnings. */
4800 while ((errtext = ctf_errwarning_next (fp, &it, &is_warning, &err)) != NULL)
4802 non_fatal (_("%s: %s"), is_warning ? _("warning"): _("error"),
4803 errtext);
4804 free (errtext);
4806 if (err != ECTF_NEXT_END)
4808 non_fatal (_("CTF error: cannot get CTF errors: `%s'"),
4809 ctf_errmsg (err));
4813 /* Dump one CTF archive member. */
4815 static void
4816 dump_ctf_archive_member (ctf_dict_t *ctf, const char *name, ctf_dict_t *parent,
4817 size_t member)
4819 const char *things[] = {"Header", "Labels", "Data objects",
4820 "Function objects", "Variables", "Types", "Strings",
4821 ""};
4822 const char **thing;
4823 size_t i;
4825 /* Don't print out the name of the default-named archive member if it appears
4826 first in the list. The name .ctf appears everywhere, even for things that
4827 aren't really archives, so printing it out is liable to be confusing; also,
4828 the common case by far is for only one archive member to exist, and hiding
4829 it in that case seems worthwhile. */
4831 if (strcmp (name, ".ctf") != 0 || member != 0)
4832 printf (_("\nCTF archive member: %s:\n"), sanitize_string (name));
4834 if (ctf_parent_name (ctf) != NULL)
4835 ctf_import (ctf, parent);
4837 for (i = 0, thing = things; *thing[0]; thing++, i++)
4839 ctf_dump_state_t *s = NULL;
4840 char *item;
4842 printf ("\n %s:\n", *thing);
4843 while ((item = ctf_dump (ctf, &s, i, dump_ctf_indent_lines,
4844 (void *) " ")) != NULL)
4846 printf ("%s\n", item);
4847 free (item);
4850 if (ctf_errno (ctf))
4852 non_fatal (_("Iteration failed: %s, %s"), *thing,
4853 ctf_errmsg (ctf_errno (ctf)));
4854 break;
4858 dump_ctf_errs (ctf);
4861 /* Dump the CTF debugging information. */
4863 static void
4864 dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name,
4865 const char *parent_sect_name)
4867 asection *sec, *psec = NULL;
4868 ctf_archive_t *ctfa;
4869 ctf_archive_t *ctfpa = NULL;
4870 bfd_byte *ctfdata = NULL;
4871 bfd_byte *ctfpdata = NULL;
4872 ctf_sect_t ctfsect;
4873 ctf_dict_t *parent;
4874 ctf_dict_t *fp;
4875 ctf_next_t *i = NULL;
4876 const char *name;
4877 size_t member = 0;
4878 int err;
4880 if (sect_name == NULL)
4881 sect_name = ".ctf";
4883 sec = read_section (abfd, sect_name, &ctfdata);
4884 if (sec == NULL)
4886 my_bfd_nonfatal (bfd_get_filename (abfd));
4887 return;
4890 /* Load the CTF file and dump it. Preload the parent dict, since it will
4891 need to be imported into every child in turn. The parent dict may come
4892 from a different section entirely. */
4894 ctfsect = make_ctfsect (sect_name, ctfdata, bfd_section_size (sec));
4895 if ((ctfa = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
4897 dump_ctf_errs (NULL);
4898 non_fatal (_("CTF open failure: %s"), ctf_errmsg (err));
4899 my_bfd_nonfatal (bfd_get_filename (abfd));
4900 free (ctfdata);
4901 return;
4904 if (parent_sect_name)
4906 psec = read_section (abfd, parent_sect_name, &ctfpdata);
4907 if (sec == NULL)
4909 my_bfd_nonfatal (bfd_get_filename (abfd));
4910 free (ctfdata);
4911 return;
4914 ctfsect = make_ctfsect (parent_sect_name, ctfpdata, bfd_section_size (psec));
4915 if ((ctfpa = ctf_bfdopen_ctfsect (abfd, &ctfsect, &err)) == NULL)
4917 dump_ctf_errs (NULL);
4918 non_fatal (_("CTF open failure: %s"), ctf_errmsg (err));
4919 my_bfd_nonfatal (bfd_get_filename (abfd));
4920 free (ctfdata);
4921 free (ctfpdata);
4922 return;
4925 else
4926 ctfpa = ctfa;
4928 if ((parent = ctf_dict_open (ctfpa, parent_name, &err)) == NULL)
4930 dump_ctf_errs (NULL);
4931 non_fatal (_("CTF open failure: %s"), ctf_errmsg (err));
4932 my_bfd_nonfatal (bfd_get_filename (abfd));
4933 ctf_close (ctfa);
4934 free (ctfdata);
4935 free (ctfpdata);
4936 return;
4939 printf (_("Contents of CTF section %s:\n"), sanitize_string (sect_name));
4941 while ((fp = ctf_archive_next (ctfa, &i, &name, 0, &err)) != NULL)
4942 dump_ctf_archive_member (fp, name, parent, member++);
4943 if (err != ECTF_NEXT_END)
4945 dump_ctf_errs (NULL);
4946 non_fatal (_("CTF archive member open failure: %s"), ctf_errmsg (err));
4947 my_bfd_nonfatal (bfd_get_filename (abfd));
4949 ctf_dict_close (parent);
4950 ctf_close (ctfa);
4951 free (ctfdata);
4952 if (parent_sect_name)
4954 ctf_close (ctfpa);
4955 free (ctfpdata);
4958 #else
4959 static void
4960 dump_ctf (bfd *abfd ATTRIBUTE_UNUSED, const char *sect_name ATTRIBUTE_UNUSED,
4961 const char *parent_name ATTRIBUTE_UNUSED,
4962 const char *parent_sect_name ATTRIBUTE_UNUSED) {}
4963 #endif
4965 static void
4966 dump_section_sframe (bfd *abfd ATTRIBUTE_UNUSED,
4967 const char * sect_name)
4969 asection *sec;
4970 sframe_decoder_ctx *sfd_ctx = NULL;
4971 bfd_size_type sf_size;
4972 bfd_byte *sframe_data;
4973 bfd_vma sf_vma;
4974 int err = 0;
4976 if (sect_name == NULL)
4977 sect_name = ".sframe";
4979 sec = read_section (abfd, sect_name, &sframe_data);
4980 if (sec == NULL)
4982 my_bfd_nonfatal (bfd_get_filename (abfd));
4983 return;
4985 sf_size = bfd_section_size (sec);
4986 sf_vma = bfd_section_vma (sec);
4988 /* Decode the contents of the section. */
4989 sfd_ctx = sframe_decode ((const char*)sframe_data, sf_size, &err);
4990 if (!sfd_ctx)
4992 my_bfd_nonfatal (bfd_get_filename (abfd));
4993 free (sframe_data);
4994 return;
4997 printf (_("Contents of the SFrame section %s:"),
4998 sanitize_string (sect_name));
4999 /* Dump the contents as text. */
5000 dump_sframe (sfd_ctx, sf_vma);
5002 sframe_decoder_free (&sfd_ctx);
5003 free (sframe_data);
5007 static void
5008 dump_bfd_private_header (bfd *abfd)
5010 if (!bfd_print_private_bfd_data (abfd, stdout))
5011 non_fatal (_("warning: private headers incomplete: %s"),
5012 bfd_errmsg (bfd_get_error ()));
5015 static void
5016 dump_target_specific (bfd *abfd)
5018 const struct objdump_private_desc * const *desc;
5019 struct objdump_private_option *opt;
5020 char *e, *b;
5022 /* Find the desc. */
5023 for (desc = objdump_private_vectors; *desc != NULL; desc++)
5024 if ((*desc)->filter (abfd))
5025 break;
5027 if (*desc == NULL)
5029 non_fatal (_("option -P/--private not supported by this file"));
5030 return;
5033 /* Clear all options. */
5034 for (opt = (*desc)->options; opt->name; opt++)
5035 opt->selected = false;
5037 /* Decode options. */
5038 b = dump_private_options;
5041 e = strchr (b, ',');
5043 if (e)
5044 *e = 0;
5046 for (opt = (*desc)->options; opt->name; opt++)
5047 if (strcmp (opt->name, b) == 0)
5049 opt->selected = true;
5050 break;
5052 if (opt->name == NULL)
5053 non_fatal (_("target specific dump '%s' not supported"), b);
5055 if (e)
5057 *e = ',';
5058 b = e + 1;
5061 while (e != NULL);
5063 /* Dump. */
5064 (*desc)->dump (abfd);
5067 /* Display a section in hexadecimal format with associated characters.
5068 Each line prefixed by the zero padded address. */
5070 static void
5071 dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
5073 bfd_byte *data = NULL;
5074 bfd_size_type datasize;
5075 bfd_vma addr_offset;
5076 bfd_vma start_offset;
5077 bfd_vma stop_offset;
5078 unsigned int opb = bfd_octets_per_byte (abfd, section);
5079 /* Bytes per line. */
5080 const int onaline = 16;
5081 char buf[64];
5082 int count;
5083 int width;
5085 if (only_list == NULL)
5087 if ((section->flags & SEC_HAS_CONTENTS) == 0)
5088 return;
5090 else if (!process_section_p (section))
5091 return;
5093 if ((datasize = bfd_section_size (section)) == 0)
5094 return;
5096 /* Compute the address range to display. */
5097 if (start_address == (bfd_vma) -1
5098 || start_address < section->vma)
5099 start_offset = 0;
5100 else
5101 start_offset = start_address - section->vma;
5103 if (stop_address == (bfd_vma) -1)
5104 stop_offset = datasize / opb;
5105 else
5107 if (stop_address < section->vma)
5108 stop_offset = 0;
5109 else
5110 stop_offset = stop_address - section->vma;
5112 if (stop_offset > datasize / opb)
5113 stop_offset = datasize / opb;
5116 if (start_offset >= stop_offset)
5117 return;
5119 printf (_("Contents of section %s:"), sanitize_string (section->name));
5120 if (display_file_offsets)
5121 printf (_(" (Starting at file offset: 0x%lx)"),
5122 (unsigned long) (section->filepos + start_offset));
5123 printf ("\n");
5125 if (bfd_is_section_compressed (abfd, section) && ! decompressed_dumps)
5126 printf (_(" NOTE: This section is compressed, but its contents have NOT been expanded for this dump.\n"));
5128 if (!bfd_get_full_section_contents (abfd, section, &data))
5130 non_fatal (_("Reading section %s failed because: %s"),
5131 section->name, bfd_errmsg (bfd_get_error ()));
5132 return;
5135 width = 4;
5137 bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
5138 if (strlen (buf) >= sizeof (buf))
5139 abort ();
5141 count = 0;
5142 while (buf[count] == '0' && buf[count+1] != '\0')
5143 count++;
5144 count = strlen (buf) - count;
5145 if (count > width)
5146 width = count;
5148 bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
5149 if (strlen (buf) >= sizeof (buf))
5150 abort ();
5152 count = 0;
5153 while (buf[count] == '0' && buf[count+1] != '\0')
5154 count++;
5155 count = strlen (buf) - count;
5156 if (count > width)
5157 width = count;
5159 for (addr_offset = start_offset;
5160 addr_offset < stop_offset; addr_offset += onaline / opb)
5162 bfd_size_type j;
5164 bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
5165 count = strlen (buf);
5166 if ((size_t) count >= sizeof (buf))
5167 abort ();
5169 putchar (' ');
5170 while (count < width)
5172 putchar ('0');
5173 count++;
5175 fputs (buf + count - width, stdout);
5176 putchar (' ');
5178 for (j = addr_offset * opb;
5179 j < addr_offset * opb + onaline; j++)
5181 if (j < stop_offset * opb)
5182 printf ("%02x", (unsigned) (data[j]));
5183 else
5184 printf (" ");
5185 if ((j & 3) == 3)
5186 printf (" ");
5189 printf (" ");
5190 for (j = addr_offset * opb;
5191 j < addr_offset * opb + onaline; j++)
5193 if (j >= stop_offset * opb)
5194 printf (" ");
5195 else
5196 printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
5198 putchar ('\n');
5200 free (data);
5203 /* Actually display the various requested regions. */
5205 static void
5206 dump_data (bfd *abfd)
5208 bfd_map_over_sections (abfd, dump_section, NULL);
5211 /* Should perhaps share code and display with nm? */
5213 static void
5214 dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bool dynamic)
5216 asymbol **current;
5217 long max_count;
5218 long count;
5220 if (dynamic)
5222 current = dynsyms;
5223 max_count = dynsymcount;
5224 printf ("DYNAMIC SYMBOL TABLE:\n");
5226 else
5228 current = syms;
5229 max_count = symcount;
5230 printf ("SYMBOL TABLE:\n");
5233 if (max_count == 0)
5234 printf (_("no symbols\n"));
5236 for (count = 0; count < max_count; count++)
5238 bfd *cur_bfd;
5240 if (*current == NULL)
5241 printf (_("no information for symbol number %ld\n"), count);
5243 else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
5244 printf (_("could not determine the type of symbol number %ld\n"),
5245 count);
5247 else if (process_section_p ((* current)->section)
5248 && (dump_special_syms
5249 || !bfd_is_target_special_symbol (cur_bfd, *current)))
5251 const char *name = (*current)->name;
5253 if (do_demangle && name != NULL && *name != '\0')
5255 char *alloc;
5257 /* If we want to demangle the name, we demangle it
5258 here, and temporarily clobber it while calling
5259 bfd_print_symbol. FIXME: This is a gross hack. */
5260 alloc = bfd_demangle (cur_bfd, name, demangle_flags);
5261 if (alloc != NULL)
5262 (*current)->name = alloc;
5263 bfd_print_symbol (cur_bfd, stdout, *current,
5264 bfd_print_symbol_all);
5265 if (alloc != NULL)
5267 (*current)->name = name;
5268 free (alloc);
5271 else if (unicode_display != unicode_default
5272 && name != NULL && *name != '\0')
5274 const char * sanitized_name;
5276 /* If we want to sanitize the name, we do it here, and
5277 temporarily clobber it while calling bfd_print_symbol.
5278 FIXME: This is a gross hack. */
5279 sanitized_name = sanitize_string (name);
5280 if (sanitized_name != name)
5281 (*current)->name = sanitized_name;
5282 else
5283 sanitized_name = NULL;
5284 bfd_print_symbol (cur_bfd, stdout, *current,
5285 bfd_print_symbol_all);
5286 if (sanitized_name != NULL)
5287 (*current)->name = name;
5289 else
5290 bfd_print_symbol (cur_bfd, stdout, *current,
5291 bfd_print_symbol_all);
5292 printf ("\n");
5295 current++;
5297 printf ("\n\n");
5300 static void
5301 dump_reloc_set (bfd *abfd, asection *sec, arelent **relpp, long relcount)
5303 arelent **p;
5304 char *last_filename, *last_functionname;
5305 unsigned int last_line;
5306 unsigned int last_discriminator;
5308 /* Get column headers lined up reasonably. */
5310 static int width;
5312 if (width == 0)
5314 char buf[30];
5316 bfd_sprintf_vma (abfd, buf, (bfd_vma) -1);
5317 width = strlen (buf) - 7;
5319 printf ("OFFSET %*s TYPE %*s VALUE\n", width, "", 12, "");
5322 last_filename = NULL;
5323 last_functionname = NULL;
5324 last_line = 0;
5325 last_discriminator = 0;
5327 for (p = relpp; relcount && *p != NULL; p++, relcount--)
5329 arelent *q = *p;
5330 const char *filename, *functionname;
5331 unsigned int linenumber;
5332 unsigned int discriminator;
5333 const char *sym_name;
5334 const char *section_name;
5335 bfd_vma addend2 = 0;
5337 if (start_address != (bfd_vma) -1
5338 && q->address < start_address)
5339 continue;
5340 if (stop_address != (bfd_vma) -1
5341 && q->address > stop_address)
5342 continue;
5344 if (with_line_numbers
5345 && sec != NULL
5346 && bfd_find_nearest_line_discriminator (abfd, sec, syms, q->address,
5347 &filename, &functionname,
5348 &linenumber, &discriminator))
5350 if (functionname != NULL
5351 && (last_functionname == NULL
5352 || strcmp (functionname, last_functionname) != 0))
5354 printf ("%s():\n", sanitize_string (functionname));
5355 if (last_functionname != NULL)
5356 free (last_functionname);
5357 last_functionname = xstrdup (functionname);
5360 if (linenumber > 0
5361 && (linenumber != last_line
5362 || (filename != NULL
5363 && last_filename != NULL
5364 && filename_cmp (filename, last_filename) != 0)
5365 || (discriminator != last_discriminator)))
5367 if (discriminator > 0)
5368 printf ("%s:%u\n", filename == NULL ? "???" :
5369 sanitize_string (filename), linenumber);
5370 else
5371 printf ("%s:%u (discriminator %u)\n",
5372 filename == NULL ? "???" : sanitize_string (filename),
5373 linenumber, discriminator);
5374 last_line = linenumber;
5375 last_discriminator = discriminator;
5376 if (last_filename != NULL)
5377 free (last_filename);
5378 if (filename == NULL)
5379 last_filename = NULL;
5380 else
5381 last_filename = xstrdup (filename);
5385 if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
5387 sym_name = (*(q->sym_ptr_ptr))->name;
5388 section_name = (*(q->sym_ptr_ptr))->section->name;
5390 else
5392 sym_name = NULL;
5393 section_name = NULL;
5396 bfd_printf_vma (abfd, q->address);
5397 if (q->howto == NULL)
5398 printf (" *unknown* ");
5399 else if (q->howto->name)
5401 const char *name = q->howto->name;
5403 /* R_SPARC_OLO10 relocations contain two addends.
5404 But because 'arelent' lacks enough storage to
5405 store them both, the 64-bit ELF Sparc backend
5406 records this as two relocations. One R_SPARC_LO10
5407 and one R_SPARC_13, both pointing to the same
5408 address. This is merely so that we have some
5409 place to store both addend fields.
5411 Undo this transformation, otherwise the output
5412 will be confusing. */
5413 if (abfd->xvec->flavour == bfd_target_elf_flavour
5414 && elf_tdata (abfd)->elf_header->e_machine == EM_SPARCV9
5415 && relcount > 1
5416 && !strcmp (q->howto->name, "R_SPARC_LO10"))
5418 arelent *q2 = *(p + 1);
5419 if (q2 != NULL
5420 && q2->howto
5421 && q->address == q2->address
5422 && !strcmp (q2->howto->name, "R_SPARC_13"))
5424 name = "R_SPARC_OLO10";
5425 addend2 = q2->addend;
5426 p++;
5429 printf (" %-16s ", name);
5431 else
5432 printf (" %-16d ", q->howto->type);
5434 if (sym_name)
5436 objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
5438 else
5440 if (section_name == NULL)
5441 section_name = "*unknown*";
5442 printf ("[%s]", sanitize_string (section_name));
5445 if (q->addend)
5447 bfd_signed_vma addend = q->addend;
5448 if (addend < 0)
5450 printf ("-0x");
5451 addend = -addend;
5453 else
5454 printf ("+0x");
5455 bfd_printf_vma (abfd, addend);
5457 if (addend2)
5459 printf ("+0x");
5460 bfd_printf_vma (abfd, addend2);
5463 printf ("\n");
5466 if (last_filename != NULL)
5467 free (last_filename);
5468 if (last_functionname != NULL)
5469 free (last_functionname);
5472 static void
5473 dump_relocs_in_section (bfd *abfd,
5474 asection *section,
5475 void *dummy ATTRIBUTE_UNUSED)
5477 arelent **relpp;
5478 long relcount;
5479 long relsize;
5481 if ( bfd_is_abs_section (section)
5482 || bfd_is_und_section (section)
5483 || bfd_is_com_section (section)
5484 || (! process_section_p (section))
5485 || ((section->flags & SEC_RELOC) == 0))
5486 return;
5488 printf ("RELOCATION RECORDS FOR [%s]:", sanitize_string (section->name));
5490 relsize = bfd_get_reloc_upper_bound (abfd, section);
5491 if (relsize == 0)
5493 printf (" (none)\n\n");
5494 return;
5497 if (relsize < 0)
5499 relpp = NULL;
5500 relcount = relsize;
5502 else
5504 relpp = (arelent **) xmalloc (relsize);
5505 relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
5508 if (relcount < 0)
5510 printf ("\n");
5511 non_fatal (_("failed to read relocs in: %s"),
5512 sanitize_string (bfd_get_filename (abfd)));
5513 my_bfd_nonfatal (_("error message was"));
5515 else if (relcount == 0)
5516 printf (" (none)\n\n");
5517 else
5519 printf ("\n");
5520 dump_reloc_set (abfd, section, relpp, relcount);
5521 printf ("\n\n");
5523 free (relpp);
5526 static void
5527 dump_relocs (bfd *abfd)
5529 bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
5532 static void
5533 dump_dynamic_relocs (bfd *abfd)
5535 long relsize;
5536 arelent **relpp;
5537 long relcount;
5539 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
5541 printf ("DYNAMIC RELOCATION RECORDS");
5543 if (relsize == 0)
5545 printf (" (none)\n\n");
5546 return;
5549 if (relsize < 0)
5551 relpp = NULL;
5552 relcount = relsize;
5554 else
5556 relpp = (arelent **) xmalloc (relsize);
5557 relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
5560 if (relcount < 0)
5562 printf ("\n");
5563 non_fatal (_("failed to read relocs in: %s"),
5564 sanitize_string (bfd_get_filename (abfd)));
5565 my_bfd_nonfatal (_("error message was"));
5567 else if (relcount == 0)
5568 printf (" (none)\n\n");
5569 else
5571 printf ("\n");
5572 dump_reloc_set (abfd, NULL, relpp, relcount);
5573 printf ("\n\n");
5575 free (relpp);
5578 /* Creates a table of paths, to search for source files. */
5580 static void
5581 add_include_path (const char *path)
5583 if (path[0] == 0)
5584 return;
5585 include_path_count++;
5586 include_paths = (const char **)
5587 xrealloc (include_paths, include_path_count * sizeof (*include_paths));
5588 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
5589 if (path[1] == ':' && path[2] == 0)
5590 path = concat (path, ".", (const char *) 0);
5591 #endif
5592 include_paths[include_path_count - 1] = path;
5595 static void
5596 adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
5597 asection *section,
5598 void *arg)
5600 if ((section->flags & SEC_DEBUGGING) == 0)
5602 bool *has_reloc_p = (bool *) arg;
5603 section->vma += adjust_section_vma;
5604 if (*has_reloc_p)
5605 section->lma += adjust_section_vma;
5609 /* Return the sign-extended form of an ARCH_SIZE sized VMA. */
5611 static bfd_vma
5612 sign_extend_address (bfd *abfd ATTRIBUTE_UNUSED,
5613 bfd_vma vma,
5614 unsigned arch_size)
5616 bfd_vma mask;
5617 mask = (bfd_vma) 1 << (arch_size - 1);
5618 return (((vma & ((mask << 1) - 1)) ^ mask) - mask);
5621 static bool
5622 might_need_separate_debug_info (bool is_mainfile)
5624 /* We do not follow links from debug info files. */
5625 if (! is_mainfile)
5626 return false;
5628 /* Since do_follow_links might be enabled by default, only treat it as an
5629 indication that separate files should be loaded if setting it was a
5630 deliberate user action. */
5631 if (DEFAULT_FOR_FOLLOW_LINKS == 0 && do_follow_links)
5632 return true;
5634 if (process_links || dump_symtab || dump_debugging
5635 || dump_dwarf_section_info || with_source_code)
5636 return true;
5638 return false;
5641 /* Dump selected contents of ABFD. */
5643 static void
5644 dump_bfd (bfd *abfd, bool is_mainfile)
5646 const struct elf_backend_data * bed;
5648 if (bfd_big_endian (abfd))
5649 byte_get = byte_get_big_endian;
5650 else if (bfd_little_endian (abfd))
5651 byte_get = byte_get_little_endian;
5652 else
5653 byte_get = NULL;
5655 /* Load any separate debug information files. */
5656 if (byte_get != NULL && might_need_separate_debug_info (is_mainfile))
5658 load_separate_debug_files (abfd, bfd_get_filename (abfd));
5660 /* If asked to do so, recursively dump the separate files. */
5661 if (do_follow_links)
5663 separate_info * i;
5665 for (i = first_separate_info; i != NULL; i = i->next)
5666 dump_bfd (i->handle, false);
5670 /* Adjust user-specified start and stop limits for targets that use
5671 signed addresses. */
5672 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
5673 && (bed = get_elf_backend_data (abfd)) != NULL
5674 && bed->sign_extend_vma)
5676 start_address = sign_extend_address (abfd, start_address,
5677 bed->s->arch_size);
5678 stop_address = sign_extend_address (abfd, stop_address,
5679 bed->s->arch_size);
5682 /* If we are adjusting section VMA's, change them all now. Changing
5683 the BFD information is a hack. However, we must do it, or
5684 bfd_find_nearest_line will not do the right thing. */
5685 if (adjust_section_vma != 0)
5687 bool has_reloc = (abfd->flags & HAS_RELOC);
5688 bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
5691 if (is_mainfile || process_links)
5693 if (! dump_debugging_tags && ! suppress_bfd_header)
5694 printf (_("\n%s: file format %s\n"),
5695 sanitize_string (bfd_get_filename (abfd)),
5696 abfd->xvec->name);
5697 if (dump_ar_hdrs)
5698 print_arelt_descr (stdout, abfd, true, false);
5699 if (dump_file_header)
5700 dump_bfd_header (abfd);
5701 if (dump_private_headers)
5702 dump_bfd_private_header (abfd);
5703 if (dump_private_options != NULL)
5704 dump_target_specific (abfd);
5705 if (! dump_debugging_tags && ! suppress_bfd_header)
5706 putchar ('\n');
5709 if (dump_symtab
5710 || dump_reloc_info
5711 || disassemble
5712 || dump_debugging
5713 || dump_dwarf_section_info)
5715 syms = slurp_symtab (abfd);
5717 /* If following links, load any symbol tables from the linked files as well. */
5718 if (do_follow_links && is_mainfile)
5720 separate_info * i;
5722 for (i = first_separate_info; i != NULL; i = i->next)
5724 asymbol ** extra_syms;
5725 long old_symcount = symcount;
5727 extra_syms = slurp_symtab (i->handle);
5729 if (extra_syms)
5731 if (old_symcount == 0)
5733 syms = extra_syms;
5735 else
5737 syms = xrealloc (syms, ((symcount + old_symcount + 1)
5738 * sizeof (asymbol *)));
5739 memcpy (syms + old_symcount,
5740 extra_syms,
5741 (symcount + 1) * sizeof (asymbol *));
5745 symcount += old_symcount;
5750 if (is_mainfile || process_links)
5752 if (dump_section_headers)
5753 dump_headers (abfd);
5755 if (dump_dynamic_symtab || dump_dynamic_reloc_info
5756 || (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
5757 dynsyms = slurp_dynamic_symtab (abfd);
5759 if (disassemble)
5761 synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
5762 dynsymcount, dynsyms,
5763 &synthsyms);
5764 if (synthcount < 0)
5765 synthcount = 0;
5768 if (dump_symtab)
5769 dump_symbols (abfd, false);
5770 if (dump_dynamic_symtab)
5771 dump_symbols (abfd, true);
5773 if (dump_dwarf_section_info)
5774 dump_dwarf (abfd, is_mainfile);
5775 if (is_mainfile || process_links)
5777 if (dump_ctf_section_info)
5778 dump_ctf (abfd, dump_ctf_section_name, dump_ctf_parent_name,
5779 dump_ctf_parent_section_name);
5780 if (dump_sframe_section_info)
5781 dump_section_sframe (abfd, dump_sframe_section_name);
5782 if (dump_stab_section_info)
5783 dump_stabs (abfd);
5784 if (dump_reloc_info && ! disassemble)
5785 dump_relocs (abfd);
5786 if (dump_dynamic_reloc_info && ! disassemble)
5787 dump_dynamic_relocs (abfd);
5788 if (dump_section_contents)
5789 dump_data (abfd);
5790 if (disassemble)
5791 disassemble_data (abfd);
5794 if (dump_debugging)
5796 void *dhandle;
5798 dhandle = read_debugging_info (abfd, syms, symcount, true);
5799 if (dhandle != NULL)
5801 if (!print_debugging_info (stdout, dhandle, abfd, syms,
5802 bfd_demangle,
5803 dump_debugging_tags != 0))
5805 non_fatal (_("%s: printing debugging information failed"),
5806 bfd_get_filename (abfd));
5807 exit_status = 1;
5810 /* PR 6483: If there was no STABS debug info in the file, try
5811 DWARF instead. */
5812 else if (! dump_dwarf_section_info)
5814 dwarf_select_sections_all ();
5815 dump_dwarf (abfd, is_mainfile);
5819 if (syms)
5821 free (syms);
5822 syms = NULL;
5825 if (dynsyms)
5827 free (dynsyms);
5828 dynsyms = NULL;
5831 if (synthsyms)
5833 free (synthsyms);
5834 synthsyms = NULL;
5837 symcount = 0;
5838 dynsymcount = 0;
5839 synthcount = 0;
5841 if (is_mainfile)
5842 free_debug_memory ();
5845 static void
5846 display_object_bfd (bfd *abfd)
5848 char **matching;
5850 if (bfd_check_format_matches (abfd, bfd_object, &matching))
5852 dump_bfd (abfd, true);
5853 return;
5856 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
5858 my_bfd_nonfatal (bfd_get_filename (abfd));
5859 list_matching_formats (matching);
5860 return;
5863 if (bfd_get_error () != bfd_error_file_not_recognized)
5865 my_bfd_nonfatal (bfd_get_filename (abfd));
5866 return;
5869 if (bfd_check_format_matches (abfd, bfd_core, &matching))
5871 dump_bfd (abfd, true);
5872 return;
5875 my_bfd_nonfatal (bfd_get_filename (abfd));
5877 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
5878 list_matching_formats (matching);
5881 static void
5882 display_any_bfd (bfd *file, int level)
5884 /* Decompress sections unless dumping the section contents. */
5885 if (!dump_section_contents || decompressed_dumps)
5886 file->flags |= BFD_DECOMPRESS;
5888 /* If the file is an archive, process all of its elements. */
5889 if (bfd_check_format (file, bfd_archive))
5891 bfd *arfile = NULL;
5892 bfd *last_arfile = NULL;
5894 if (level == 0)
5895 printf (_("In archive %s:\n"), sanitize_string (bfd_get_filename (file)));
5896 else if (level > 100)
5898 /* Prevent corrupted files from spinning us into an
5899 infinite loop. 100 is an arbitrary heuristic. */
5900 non_fatal (_("Archive nesting is too deep"));
5901 exit_status = 1;
5902 return;
5904 else
5905 printf (_("In nested archive %s:\n"),
5906 sanitize_string (bfd_get_filename (file)));
5908 for (;;)
5910 bfd_set_error (bfd_error_no_error);
5912 arfile = bfd_openr_next_archived_file (file, arfile);
5913 if (arfile == NULL)
5915 if (bfd_get_error () != bfd_error_no_more_archived_files)
5916 my_bfd_nonfatal (bfd_get_filename (file));
5917 break;
5920 display_any_bfd (arfile, level + 1);
5922 if (last_arfile != NULL)
5924 bfd_close (last_arfile);
5925 /* PR 17512: file: ac585d01. */
5926 if (arfile == last_arfile)
5928 last_arfile = NULL;
5929 break;
5932 last_arfile = arfile;
5935 if (last_arfile != NULL)
5936 bfd_close (last_arfile);
5938 else
5939 display_object_bfd (file);
5942 static void
5943 display_file (char *filename, char *target, bool last_file)
5945 bfd *file;
5947 if (get_file_size (filename) < 1)
5949 exit_status = 1;
5950 return;
5953 file = bfd_openr (filename, target);
5954 if (file == NULL)
5956 my_bfd_nonfatal (filename);
5957 return;
5960 display_any_bfd (file, 0);
5962 /* This is an optimization to improve the speed of objdump, especially when
5963 dumping a file with lots of associated debug informatiom. Calling
5964 bfd_close on such a file can take a non-trivial amount of time as there
5965 are lots of lists to walk and buffers to free. This is only really
5966 necessary however if we are about to load another file and we need the
5967 memory back. Otherwise, if we are about to exit, then we can save (a lot
5968 of) time by only doing a quick close, and allowing the OS to reclaim the
5969 memory for us. */
5970 if (! last_file)
5971 bfd_close (file);
5972 else
5973 bfd_close_all_done (file);
5977 main (int argc, char **argv)
5979 int c;
5980 char *target = default_target;
5981 bool seenflag = false;
5983 #ifdef HAVE_LC_MESSAGES
5984 setlocale (LC_MESSAGES, "");
5985 #endif
5986 setlocale (LC_CTYPE, "");
5988 bindtextdomain (PACKAGE, LOCALEDIR);
5989 textdomain (PACKAGE);
5991 program_name = *argv;
5992 xmalloc_set_program_name (program_name);
5993 bfd_set_error_program_name (program_name);
5995 expandargv (&argc, &argv);
5997 if (bfd_init () != BFD_INIT_MAGIC)
5998 fatal (_("fatal error: libbfd ABI mismatch"));
5999 set_default_bfd_target ();
6001 while ((c = getopt_long (argc, argv,
6002 "CDE:FGHI:LM:P:RSTU:VW::Zab:defghij:lm:prstvwxz",
6003 long_options, (int *) 0))
6004 != EOF)
6006 switch (c)
6008 case 0:
6009 break; /* We've been given a long option. */
6010 case 'm':
6011 machine = optarg;
6012 break;
6013 case 'Z':
6014 decompressed_dumps = true;
6015 break;
6016 case 'M':
6018 char *options;
6019 if (disassembler_options)
6020 /* Ignore potential memory leak for now. */
6021 options = concat (disassembler_options, ",",
6022 optarg, (const char *) NULL);
6023 else
6024 options = optarg;
6025 disassembler_options = remove_whitespace_and_extra_commas (options);
6027 break;
6028 case 'j':
6029 add_only (optarg);
6030 break;
6031 case 'F':
6032 display_file_offsets = true;
6033 break;
6034 case 'l':
6035 with_line_numbers = true;
6036 break;
6037 case 'b':
6038 target = optarg;
6039 break;
6040 case 'C':
6041 do_demangle = true;
6042 if (optarg != NULL)
6044 enum demangling_styles style;
6046 style = cplus_demangle_name_to_style (optarg);
6047 if (style == unknown_demangling)
6048 fatal (_("unknown demangling style `%s'"),
6049 optarg);
6051 cplus_demangle_set_style (style);
6053 break;
6054 case OPTION_RECURSE_LIMIT:
6055 demangle_flags &= ~ DMGL_NO_RECURSE_LIMIT;
6056 break;
6057 case OPTION_NO_RECURSE_LIMIT:
6058 demangle_flags |= DMGL_NO_RECURSE_LIMIT;
6059 break;
6060 case 'w':
6061 do_wide = wide_output = true;
6062 break;
6063 case OPTION_ADJUST_VMA:
6064 adjust_section_vma = parse_vma (optarg, "--adjust-vma");
6065 break;
6066 case OPTION_START_ADDRESS:
6067 start_address = parse_vma (optarg, "--start-address");
6068 if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
6069 fatal (_("error: the start address should be before the end address"));
6070 break;
6071 case OPTION_STOP_ADDRESS:
6072 stop_address = parse_vma (optarg, "--stop-address");
6073 if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
6074 fatal (_("error: the stop address should be after the start address"));
6075 break;
6076 case OPTION_PREFIX:
6077 prefix = optarg;
6078 prefix_length = strlen (prefix);
6079 /* Remove an unnecessary trailing '/' */
6080 while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
6081 prefix_length--;
6082 break;
6083 case OPTION_PREFIX_STRIP:
6084 prefix_strip = atoi (optarg);
6085 if (prefix_strip < 0)
6086 fatal (_("error: prefix strip must be non-negative"));
6087 break;
6088 case OPTION_INSN_WIDTH:
6089 insn_width = strtoul (optarg, NULL, 0);
6090 if (insn_width <= 0)
6091 fatal (_("error: instruction width must be positive"));
6092 break;
6093 case OPTION_INLINES:
6094 unwind_inlines = true;
6095 break;
6096 case OPTION_VISUALIZE_JUMPS:
6097 visualize_jumps = true;
6098 color_output = false;
6099 extended_color_output = false;
6100 if (optarg != NULL)
6102 if (streq (optarg, "color"))
6103 color_output = true;
6104 else if (streq (optarg, "extended-color"))
6106 color_output = true;
6107 extended_color_output = true;
6109 else if (streq (optarg, "off"))
6110 visualize_jumps = false;
6111 else
6113 non_fatal (_("unrecognized argument to --visualize-option"));
6114 usage (stderr, 1);
6117 break;
6118 case OPTION_DISASSEMBLER_COLOR:
6119 if (streq (optarg, "off"))
6120 disassembler_color = off;
6121 else if (streq (optarg, "terminal"))
6122 disassembler_color = on_if_terminal_output;
6123 else if (streq (optarg, "color")
6124 || streq (optarg, "colour")
6125 || streq (optarg, "on"))
6126 disassembler_color = on;
6127 else if (streq (optarg, "extended")
6128 || streq (optarg, "extended-color")
6129 || streq (optarg, "extended-colour"))
6130 disassembler_color = extended;
6131 else
6133 non_fatal (_("unrecognized argument to --disassembler-color"));
6134 usage (stderr, 1);
6136 break;
6137 case 'E':
6138 if (strcmp (optarg, "B") == 0)
6139 endian = BFD_ENDIAN_BIG;
6140 else if (strcmp (optarg, "L") == 0)
6141 endian = BFD_ENDIAN_LITTLE;
6142 else
6144 non_fatal (_("unrecognized -E option"));
6145 usage (stderr, 1);
6147 break;
6148 case OPTION_ENDIAN:
6149 if (strncmp (optarg, "big", strlen (optarg)) == 0)
6150 endian = BFD_ENDIAN_BIG;
6151 else if (strncmp (optarg, "little", strlen (optarg)) == 0)
6152 endian = BFD_ENDIAN_LITTLE;
6153 else
6155 non_fatal (_("unrecognized --endian type `%s'"), optarg);
6156 usage (stderr, 1);
6158 break;
6160 case 'f':
6161 dump_file_header = true;
6162 seenflag = true;
6163 break;
6164 case 'i':
6165 formats_info = true;
6166 seenflag = true;
6167 break;
6168 case 'I':
6169 add_include_path (optarg);
6170 break;
6171 case 'p':
6172 dump_private_headers = true;
6173 seenflag = true;
6174 break;
6175 case 'P':
6176 dump_private_options = optarg;
6177 seenflag = true;
6178 break;
6179 case 'x':
6180 dump_private_headers = true;
6181 dump_symtab = true;
6182 dump_reloc_info = true;
6183 dump_file_header = true;
6184 dump_ar_hdrs = true;
6185 dump_section_headers = true;
6186 seenflag = true;
6187 break;
6188 case 't':
6189 dump_symtab = true;
6190 seenflag = true;
6191 break;
6192 case 'T':
6193 dump_dynamic_symtab = true;
6194 seenflag = true;
6195 break;
6196 case 'd':
6197 disassemble = true;
6198 seenflag = true;
6199 disasm_sym = optarg;
6200 break;
6201 case 'z':
6202 disassemble_zeroes = true;
6203 break;
6204 case 'D':
6205 disassemble = true;
6206 disassemble_all = true;
6207 seenflag = true;
6208 break;
6209 case 'S':
6210 disassemble = true;
6211 with_source_code = true;
6212 seenflag = true;
6213 break;
6214 case OPTION_SOURCE_COMMENT:
6215 disassemble = true;
6216 with_source_code = true;
6217 seenflag = true;
6218 if (optarg)
6219 source_comment = xstrdup (sanitize_string (optarg));
6220 else
6221 source_comment = xstrdup ("# ");
6222 break;
6223 case 'g':
6224 dump_debugging = 1;
6225 seenflag = true;
6226 break;
6227 case 'e':
6228 dump_debugging = 1;
6229 dump_debugging_tags = 1;
6230 do_demangle = true;
6231 seenflag = true;
6232 break;
6233 case 'L':
6234 process_links = true;
6235 do_follow_links = true;
6236 break;
6237 case 'W':
6238 seenflag = true;
6239 if (optarg)
6241 if (dwarf_select_sections_by_letters (optarg))
6242 dump_dwarf_section_info = true;
6244 else
6246 dump_dwarf_section_info = true;
6247 dwarf_select_sections_all ();
6249 break;
6250 case OPTION_DWARF:
6251 seenflag = true;
6252 if (optarg)
6254 if (dwarf_select_sections_by_names (optarg))
6255 dump_dwarf_section_info = true;
6257 else
6259 dwarf_select_sections_all ();
6260 dump_dwarf_section_info = true;
6262 break;
6263 case OPTION_DWARF_DEPTH:
6265 char *cp;
6266 dwarf_cutoff_level = strtoul (optarg, & cp, 0);
6268 break;
6269 case OPTION_DWARF_START:
6271 char *cp;
6272 dwarf_start_die = strtoul (optarg, & cp, 0);
6273 suppress_bfd_header = 1;
6275 break;
6276 case OPTION_DWARF_CHECK:
6277 dwarf_check = true;
6278 break;
6279 #ifdef ENABLE_LIBCTF
6280 case OPTION_CTF:
6281 dump_ctf_section_info = true;
6282 if (optarg)
6283 dump_ctf_section_name = xstrdup (optarg);
6284 seenflag = true;
6285 break;
6286 case OPTION_CTF_PARENT:
6287 dump_ctf_parent_name = xstrdup (optarg);
6288 break;
6289 case OPTION_CTF_PARENT_SECTION:
6290 dump_ctf_parent_section_name = xstrdup (optarg);
6291 break;
6292 #endif
6293 case OPTION_SFRAME:
6294 dump_sframe_section_info = true;
6295 if (optarg)
6296 dump_sframe_section_name = xstrdup (optarg);
6297 seenflag = true;
6298 break;
6299 case 'G':
6300 dump_stab_section_info = true;
6301 seenflag = true;
6302 break;
6303 case 's':
6304 dump_section_contents = true;
6305 seenflag = true;
6306 break;
6307 case 'r':
6308 dump_reloc_info = true;
6309 seenflag = true;
6310 break;
6311 case 'R':
6312 dump_dynamic_reloc_info = true;
6313 seenflag = true;
6314 break;
6315 case 'a':
6316 dump_ar_hdrs = true;
6317 seenflag = true;
6318 break;
6319 case 'h':
6320 dump_section_headers = true;
6321 seenflag = true;
6322 break;
6323 case 'v':
6324 case 'V':
6325 show_version = true;
6326 seenflag = true;
6327 break;
6329 case 'U':
6330 if (streq (optarg, "default") || streq (optarg, "d"))
6331 unicode_display = unicode_default;
6332 else if (streq (optarg, "locale") || streq (optarg, "l"))
6333 unicode_display = unicode_locale;
6334 else if (streq (optarg, "escape") || streq (optarg, "e"))
6335 unicode_display = unicode_escape;
6336 else if (streq (optarg, "invalid") || streq (optarg, "i"))
6337 unicode_display = unicode_invalid;
6338 else if (streq (optarg, "hex") || streq (optarg, "x"))
6339 unicode_display = unicode_hex;
6340 else if (streq (optarg, "highlight") || streq (optarg, "h"))
6341 unicode_display = unicode_highlight;
6342 else
6343 fatal (_("invalid argument to -U/--unicode: %s"), optarg);
6344 break;
6346 case 'H':
6347 usage (stdout, 0);
6348 /* No need to set seenflag or to break - usage() does not return. */
6349 default:
6350 usage (stderr, 1);
6354 if (disassembler_color == on_if_terminal_output)
6355 disassembler_color = isatty (1) ? on : off;
6357 if (show_version)
6358 print_version ("objdump");
6360 if (!seenflag)
6361 usage (stderr, 2);
6363 dump_any_debugging = (dump_debugging
6364 || dump_dwarf_section_info
6365 || process_links
6366 || with_source_code);
6368 if (formats_info)
6369 exit_status = display_info ();
6370 else
6372 if (optind == argc)
6373 display_file ("a.out", target, true);
6374 else
6375 for (; optind < argc;)
6377 display_file (argv[optind], target, optind == argc - 1);
6378 optind++;
6382 free_only_list ();
6383 free (dump_ctf_section_name);
6384 free (dump_ctf_parent_name);
6385 free ((void *) source_comment);
6386 free (dump_ctf_parent_section_name);
6388 return exit_status;