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objdump.c
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/* objdump.c -- dump information about an object file.
Copyright (C) 1990-2025 Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/* Objdump overview.
Objdump displays information about one or more object files, either on
their own, or inside libraries. It is commonly used as a disassembler,
but it can also display information about file headers, symbol tables,
relocations, debugging directives and more.
The flow of execution is as follows:
1. Command line arguments are checked for control switches and the
information to be displayed is selected.
2. Any remaining arguments are assumed to be object files, and they are
processed in order by display_bfd(). If the file is an archive each
of its elements is processed in turn.
3. The file's target architecture and binary file format are determined
by bfd_check_format(). If they are recognised, then dump_bfd() is
called.
4. dump_bfd() in turn calls separate functions to display the requested
item(s) of information(s). For example disassemble_data() is called if
a disassembly has been requested.
When disassembling the code loops through blocks of instructions bounded
by symbols, calling disassemble_bytes() on each block. The actual
disassembling is done by the libopcodes library, via a function pointer
supplied by the disassembler() function. */
#include "sysdep.h"
#include "bfd.h"
#include "elf-bfd.h"
#include "coff-bfd.h"
#include "bucomm.h"
#include "elfcomm.h"
#include "demanguse.h"
#include "dwarf.h"
#include "ctf-api.h"
#include "sframe-api.h"
#include "getopt.h"
#include "safe-ctype.h"
#include "dis-asm.h"
#include "libiberty.h"
#include "demangle.h"
#include "filenames.h"
#include "debug.h"
#include "budbg.h"
#include "objdump.h"
#ifdef HAVE_MMAP
#include <sys/mman.h>
#endif
#ifdef HAVE_LIBDEBUGINFOD
#include <elfutils/debuginfod.h>
#endif
/* Internal headers for the ELF .stab-dump code - sorry. */
#define BYTES_IN_WORD 32
#include "aout/aout64.h"
/* Exit status. */
static int exit_status = 0;
static char *default_target = NULL; /* Default at runtime. */
/* The following variables are set based on arguments passed on the
command line. */
static int show_version = 0; /* Show the version number. */
static int dump_section_contents; /* -s */
static int dump_section_headers; /* -h */
static bool dump_file_header; /* -f */
static int dump_symtab; /* -t */
static int dump_dynamic_symtab; /* -T */
static int dump_reloc_info; /* -r */
static int dump_dynamic_reloc_info; /* -R */
static int dump_ar_hdrs; /* -a */
static int dump_private_headers; /* -p */
static char *dump_private_options; /* -P */
static int no_addresses; /* --no-addresses */
static int prefix_addresses; /* --prefix-addresses */
static int with_line_numbers; /* -l */
static bool with_source_code; /* -S */
static int show_raw_insn; /* --show-raw-insn */
static int dump_dwarf_section_info; /* --dwarf */
static int dump_stab_section_info; /* --stabs */
static int dump_ctf_section_info; /* --ctf */
static char *dump_ctf_section_name;
static char *dump_ctf_parent_name; /* --ctf-parent */
static char *dump_ctf_parent_section_name; /* --ctf-parent-section */
static int dump_sframe_section_info; /* --sframe */
static char *dump_sframe_section_name;
static int do_demangle; /* -C, --demangle */
static bool disassemble; /* -d */
static bool disassemble_all; /* -D */
static int disassemble_zeroes; /* --disassemble-zeroes */
static bool formats_info; /* -i */
int wide_output; /* -w */
#define MAX_INSN_WIDTH 49
static unsigned long insn_width; /* --insn-width */
static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
static int dump_debugging; /* --debugging */
static int dump_debugging_tags; /* --debugging-tags */
static int suppress_bfd_header;
static int dump_special_syms = 0; /* --special-syms */
static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
static int file_start_context = 0; /* --file-start-context */
static bool display_file_offsets; /* -F */
static const char *prefix; /* --prefix */
static int prefix_strip; /* --prefix-strip */
static size_t prefix_length;
static bool unwind_inlines; /* --inlines. */
static const char * source_comment; /* --source_comment. */
static bool visualize_jumps = false; /* --visualize-jumps. */
static bool color_output = false; /* --visualize-jumps=color. */
static bool extended_color_output = false; /* --visualize-jumps=extended-color. */
static int process_links = false; /* --process-links. */
static int show_all_symbols; /* --show-all-symbols. */
static bool decompressed_dumps = false; /* -Z, --decompress. */
static struct symbol_entry
{
const char *name;
struct symbol_entry *next;
} *disasm_sym_list; /* Disassembly start symbol(s). */
static enum color_selection
{
on_if_terminal_output,
on, /* --disassembler-color=color. */
off, /* --disassembler-color=off. */
extended /* --disassembler-color=extended-color. */
} disassembler_color =
#if DEFAULT_FOR_COLORED_DISASSEMBLY
on_if_terminal_output;
#else
off;
#endif
static int dump_any_debugging;
static int demangle_flags = DMGL_ANSI | DMGL_PARAMS;
/* This is reset to false each time we enter the disassembler, and set true
when the disassembler emits something in the dis_style_comment_start
style. Once this is true, all further output on that line is done in
the comment style. This only has an effect when disassembler coloring
is turned on. */
static bool disassembler_in_comment = false;
/* A structure to record the sections mentioned in -j switches. */
struct only
{
const char *name; /* The name of the section. */
bool seen; /* A flag to indicate that the section has been found in one or more input files. */
struct only *next; /* Pointer to the next structure in the list. */
};
/* Pointer to an array of 'only' structures.
This pointer is NULL if the -j switch has not been used. */
static struct only * only_list = NULL;
/* Variables for handling include file path table. */
static const char **include_paths;
static int include_path_count;
/* Extra info to pass to the section disassembler and address printing
function. */
struct objdump_disasm_info
{
bfd *abfd;
bool require_sec;
disassembler_ftype disassemble_fn;
arelent *reloc;
struct symbol_entry *symbol_list;
};
/* Architecture to disassemble for, or default if NULL. */
static char *machine = NULL;
/* Target specific options to the disassembler. */
static char *disassembler_options = NULL;
/* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN. */
static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;
/* The symbol table. */
static asymbol **syms;
/* Number of symbols in `syms'. */
static long symcount = 0;
/* The sorted symbol table. */
static asymbol **sorted_syms;
/* Number of symbols in `sorted_syms'. */
static long sorted_symcount = 0;
/* The dynamic symbol table. */
static asymbol **dynsyms;
/* The synthetic symbol table. */
static asymbol *synthsyms;
static long synthcount = 0;
/* Number of symbols in `dynsyms'. */
static long dynsymcount = 0;
static bfd_byte *stabs;
static bfd_size_type stab_size;
static bfd_byte *strtab;
static bfd_size_type stabstr_size;
/* Handlers for -P/--private. */
static const struct objdump_private_desc * const objdump_private_vectors[] =
{
OBJDUMP_PRIVATE_VECTORS
NULL
};
/* The list of detected jumps inside a function. */
static struct jump_info *detected_jumps = NULL;
typedef enum unicode_display_type
{
unicode_default = 0,
unicode_locale,
unicode_escape,
unicode_hex,
unicode_highlight,
unicode_invalid
} unicode_display_type;
static unicode_display_type unicode_display = unicode_default;
static void usage (FILE *, int) ATTRIBUTE_NORETURN;
static void
usage (FILE *stream, int status)
{
fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
fprintf (stream, _(" Display information from object <file(s)>.\n"));
fprintf (stream, _(" At least one of the following switches must be given:\n"));
fprintf (stream, _("\
-a, --archive-headers Display archive header information\n"));
fprintf (stream, _("\
-f, --file-headers Display the contents of the overall file header\n"));
fprintf (stream, _("\
-p, --private-headers Display object format specific file header contents\n"));
fprintf (stream, _("\
-P, --private=OPT,OPT... Display object format specific contents\n"));
fprintf (stream, _("\
-h, --[section-]headers Display the contents of the section headers\n"));
fprintf (stream, _("\
-x, --all-headers Display the contents of all headers\n"));
fprintf (stream, _("\
-d, --disassemble Display assembler contents of executable sections\n"));
fprintf (stream, _("\
-D, --disassemble-all Display assembler contents of all sections\n"));
fprintf (stream, _("\
--disassemble=<sym> Display assembler contents from <sym>\n"));
fprintf (stream, _("\
-S, --source Intermix source code with disassembly\n"));
fprintf (stream, _("\
--source-comment[=<txt>] Prefix lines of source code with <txt>\n"));
fprintf (stream, _("\
-s, --full-contents Display the full contents of all sections requested\n"));
fprintf (stream, _("\
-Z, --decompress Decompress section(s) before displaying their contents\n"));
fprintf (stream, _("\
-g, --debugging Display debug information in object file\n"));
fprintf (stream, _("\
-e, --debugging-tags Display debug information using ctags style\n"));
fprintf (stream, _("\
-G, --stabs Display (in raw form) any STABS info in the file\n"));
fprintf (stream, _("\
-W, --dwarf[a/=abbrev, A/=addr, r/=aranges, c/=cu_index, L/=decodedline,\n\
f/=frames, F/=frames-interp, g/=gdb_index, i/=info, o/=loc,\n\
m/=macro, p/=pubnames, t/=pubtypes, R/=Ranges, l/=rawline,\n\
s/=str, O/=str-offsets, u/=trace_abbrev, T/=trace_aranges,\n\
U/=trace_info]\n\
Display the contents of DWARF debug sections\n"));
fprintf (stream, _("\
-Wk,--dwarf=links Display the contents of sections that link to\n\
separate debuginfo files\n"));
#if DEFAULT_FOR_FOLLOW_LINKS
fprintf (stream, _("\
-WK,--dwarf=follow-links\n\
Follow links to separate debug info files (default)\n"));
fprintf (stream, _("\
-WN,--dwarf=no-follow-links\n\
Do not follow links to separate debug info files\n"));
#else
fprintf (stream, _("\
-WK,--dwarf=follow-links\n\
Follow links to separate debug info files\n"));
fprintf (stream, _("\
-WN,--dwarf=no-follow-links\n\
Do not follow links to separate debug info files\n\
(default)\n"));
#endif
#if HAVE_LIBDEBUGINFOD
fprintf (stream, _("\
-WD --dwarf=use-debuginfod\n\
When following links, also query debuginfod servers (default)\n"));
fprintf (stream, _("\
-WE --dwarf=do-not-use-debuginfod\n\
When following links, do not query debuginfod servers\n"));
#endif
fprintf (stream, _("\
-L, --process-links Display the contents of non-debug sections in\n\
separate debuginfo files. (Implies -WK)\n"));
#ifdef ENABLE_LIBCTF
fprintf (stream, _("\
--ctf[=SECTION] Display CTF info from SECTION, (default `.ctf')\n"));
#endif
fprintf (stream, _("\
--sframe[=SECTION] Display SFrame info from SECTION, (default '.sframe')\n"));
fprintf (stream, _("\
-t, --syms Display the contents of the symbol table(s)\n"));
fprintf (stream, _("\
-T, --dynamic-syms Display the contents of the dynamic symbol table\n"));
fprintf (stream, _("\
-r, --reloc Display the relocation entries in the file\n"));
fprintf (stream, _("\
-R, --dynamic-reloc Display the dynamic relocation entries in the file\n"));
fprintf (stream, _("\
@<file> Read options from <file>\n"));
fprintf (stream, _("\
-v, --version Display this program's version number\n"));
fprintf (stream, _("\
-i, --info List object formats and architectures supported\n"));
fprintf (stream, _("\
-H, --help Display this information\n"));
if (status != 2)
{
const struct objdump_private_desc * const *desc;
fprintf (stream, _("\n The following switches are optional:\n"));
fprintf (stream, _("\
-b, --target=BFDNAME Specify the target object format as BFDNAME\n"));
fprintf (stream, _("\
-m, --architecture=MACHINE Specify the target architecture as MACHINE\n"));
fprintf (stream, _("\
-j, --section=NAME Only display information for section NAME\n"));
fprintf (stream, _("\
-M, --disassembler-options=OPT Pass text OPT on to the disassembler\n"));
fprintf (stream, _("\
-EB --endian=big Assume big endian format when disassembling\n"));
fprintf (stream, _("\
-EL --endian=little Assume little endian format when disassembling\n"));
fprintf (stream, _("\
--file-start-context Include context from start of file (with -S)\n"));
fprintf (stream, _("\
-I, --include=DIR Add DIR to search list for source files\n"));
fprintf (stream, _("\
-l, --line-numbers Include line numbers and filenames in output\n"));
fprintf (stream, _("\
-F, --file-offsets Include file offsets when displaying information\n"));
fprintf (stream, _("\
-C, --demangle[=STYLE] Decode mangled/processed symbol names\n"));
display_demangler_styles (stream, _("\
STYLE can be "));
fprintf (stream, _("\
--recurse-limit Enable a limit on recursion whilst demangling\n\
(default)\n"));
fprintf (stream, _("\
--no-recurse-limit Disable a limit on recursion whilst demangling\n"));
fprintf (stream, _("\
-w, --wide Format output for more than 80 columns\n"));
fprintf (stream, _("\
-U[d|l|i|x|e|h] Controls the display of UTF-8 unicode characters\n\
--unicode=[default|locale|invalid|hex|escape|highlight]\n"));
fprintf (stream, _("\
-z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n"));
fprintf (stream, _("\
--start-address=ADDR Only process data whose address is >= ADDR\n"));
fprintf (stream, _("\
--stop-address=ADDR Only process data whose address is < ADDR\n"));
fprintf (stream, _("\
--no-addresses Do not print address alongside disassembly\n"));
fprintf (stream, _("\
--prefix-addresses Print complete address alongside disassembly\n"));
fprintf (stream, _("\
--[no-]show-raw-insn Display hex alongside symbolic disassembly\n"));
fprintf (stream, _("\
--insn-width=WIDTH Display WIDTH bytes on a single line for -d\n"));
fprintf (stream, _("\
--adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n"));
fprintf (stream, _("\
--show-all-symbols When disassembling, display all symbols at a given address\n"));
fprintf (stream, _("\
--special-syms Include special symbols in symbol dumps\n"));
fprintf (stream, _("\
--inlines Print all inlines for source line (with -l)\n"));
fprintf (stream, _("\
--prefix=PREFIX Add PREFIX to absolute paths for -S\n"));
fprintf (stream, _("\
--prefix-strip=LEVEL Strip initial directory names for -S\n"));
fprintf (stream, _("\
--dwarf-depth=N Do not display DIEs at depth N or greater\n"));
fprintf (stream, _("\
--dwarf-start=N Display DIEs starting at offset N\n"));
fprintf (stream, _("\
--dwarf-check Make additional dwarf consistency checks.\n"));
#ifdef ENABLE_LIBCTF
fprintf (stream, _("\
--ctf-parent=NAME Use CTF archive member NAME as the CTF parent\n"));
#endif
fprintf (stream, _("\
--visualize-jumps Visualize jumps by drawing ASCII art lines\n"));
fprintf (stream, _("\
--visualize-jumps=color Use colors in the ASCII art\n"));
fprintf (stream, _("\
--visualize-jumps=extended-color\n\
Use extended 8-bit color codes\n"));
fprintf (stream, _("\
--visualize-jumps=off Disable jump visualization\n"));
#if DEFAULT_FOR_COLORED_DISASSEMBLY
fprintf (stream, _("\
--disassembler-color=off Disable disassembler color output.\n"));
fprintf (stream, _("\
--disassembler-color=terminal Enable disassembler color output if displaying on a terminal. (default)\n"));
#else
fprintf (stream, _("\
--disassembler-color=off Disable disassembler color output. (default)\n"));
fprintf (stream, _("\
--disassembler-color=terminal Enable disassembler color output if displaying on a terminal.\n"));
#endif
fprintf (stream, _("\
--disassembler-color=on Enable disassembler color output.\n"));
fprintf (stream, _("\
--disassembler-color=extended Use 8-bit colors in disassembler output.\n\n"));
list_supported_targets (program_name, stream);
list_supported_architectures (program_name, stream);
disassembler_usage (stream);
if (objdump_private_vectors[0] != NULL)
{
fprintf (stream,
_("\nOptions supported for -P/--private switch:\n"));
for (desc = objdump_private_vectors; *desc != NULL; desc++)
(*desc)->help (stream);
}
}
if (REPORT_BUGS_TO[0] && status == 0)
fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
exit (status);
}
/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
enum option_values
{
OPTION_ENDIAN=150,
OPTION_START_ADDRESS,
OPTION_STOP_ADDRESS,
OPTION_DWARF,
OPTION_PREFIX,
OPTION_PREFIX_STRIP,
OPTION_INSN_WIDTH,
OPTION_ADJUST_VMA,
OPTION_DWARF_DEPTH,
OPTION_DWARF_CHECK,
OPTION_DWARF_START,
OPTION_RECURSE_LIMIT,
OPTION_NO_RECURSE_LIMIT,
OPTION_INLINES,
OPTION_SOURCE_COMMENT,
#ifdef ENABLE_LIBCTF
OPTION_CTF,
OPTION_CTF_PARENT,
OPTION_CTF_PARENT_SECTION,
#endif
OPTION_SFRAME,
OPTION_VISUALIZE_JUMPS,
OPTION_DISASSEMBLER_COLOR
};
static struct option long_options[]=
{
{"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
{"all-headers", no_argument, NULL, 'x'},
{"architecture", required_argument, NULL, 'm'},
{"archive-headers", no_argument, NULL, 'a'},
#ifdef ENABLE_LIBCTF
{"ctf", optional_argument, NULL, OPTION_CTF},
{"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
{"ctf-parent-section", required_argument, NULL, OPTION_CTF_PARENT_SECTION},
#endif
{"debugging", no_argument, NULL, 'g'},
{"debugging-tags", no_argument, NULL, 'e'},
{"decompress", no_argument, NULL, 'Z'},
{"demangle", optional_argument, NULL, 'C'},
{"disassemble", optional_argument, NULL, 'd'},
{"disassemble-all", no_argument, NULL, 'D'},
{"disassemble-zeroes", no_argument, NULL, 'z'},
{"disassembler-options", required_argument, NULL, 'M'},
{"dwarf", optional_argument, NULL, OPTION_DWARF},
{"dwarf-check", no_argument, 0, OPTION_DWARF_CHECK},
{"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
{"dwarf-start", required_argument, 0, OPTION_DWARF_START},
{"dynamic-reloc", no_argument, NULL, 'R'},
{"dynamic-syms", no_argument, NULL, 'T'},
{"endian", required_argument, NULL, OPTION_ENDIAN},
{"file-headers", no_argument, NULL, 'f'},
{"file-offsets", no_argument, NULL, 'F'},
{"file-start-context", no_argument, &file_start_context, 1},
{"full-contents", no_argument, NULL, 's'},
{"headers", no_argument, NULL, 'h'},
{"help", no_argument, NULL, 'H'},
{"include", required_argument, NULL, 'I'},
{"info", no_argument, NULL, 'i'},
{"inlines", no_argument, 0, OPTION_INLINES},
{"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
{"line-numbers", no_argument, NULL, 'l'},
{"no-addresses", no_argument, &no_addresses, 1},
{"no-recurse-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
{"no-recursion-limit", no_argument, NULL, OPTION_NO_RECURSE_LIMIT},
{"no-show-raw-insn", no_argument, &show_raw_insn, -1},
{"prefix", required_argument, NULL, OPTION_PREFIX},
{"prefix-addresses", no_argument, &prefix_addresses, 1},
{"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
{"private", required_argument, NULL, 'P'},
{"private-headers", no_argument, NULL, 'p'},
{"process-links", no_argument, &process_links, true},
{"recurse-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
{"recursion-limit", no_argument, NULL, OPTION_RECURSE_LIMIT},
{"reloc", no_argument, NULL, 'r'},
{"section", required_argument, NULL, 'j'},
{"section-headers", no_argument, NULL, 'h'},
{"sframe", optional_argument, NULL, OPTION_SFRAME},
{"show-all-symbols", no_argument, &show_all_symbols, 1},
{"show-raw-insn", no_argument, &show_raw_insn, 1},
{"source", no_argument, NULL, 'S'},
{"source-comment", optional_argument, NULL, OPTION_SOURCE_COMMENT},
{"special-syms", no_argument, &dump_special_syms, 1},
{"stabs", no_argument, NULL, 'G'},
{"start-address", required_argument, NULL, OPTION_START_ADDRESS},
{"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
{"syms", no_argument, NULL, 't'},
{"target", required_argument, NULL, 'b'},
{"unicode", required_argument, NULL, 'U'},
{"version", no_argument, NULL, 'V'},
{"visualize-jumps", optional_argument, 0, OPTION_VISUALIZE_JUMPS},
{"wide", no_argument, NULL, 'w'},
{"disassembler-color", required_argument, NULL, OPTION_DISASSEMBLER_COLOR},
{NULL, no_argument, NULL, 0}
};
static void
my_bfd_nonfatal (const char *msg)
{
bfd_nonfatal (msg);
exit_status = 1;
}
/* Convert a potential UTF-8 encoded sequence in IN into characters in OUT.
The conversion format is controlled by the unicode_display variable.
Returns the number of characters added to OUT.
Returns the number of bytes consumed from IN in CONSUMED.
Always consumes at least one byte and displays at least one character. */
static unsigned int
display_utf8 (const unsigned char * in, char * out, unsigned int * consumed)
{
char * orig_out = out;
unsigned int nchars = 0;
unsigned int j;
if (unicode_display == unicode_default)
goto invalid;
if (in[0] < 0xc0)
goto invalid;
if ((in[1] & 0xc0) != 0x80)
goto invalid;
if ((in[0] & 0x20) == 0)
{
nchars = 2;
goto valid;
}
if ((in[2] & 0xc0) != 0x80)
goto invalid;
if ((in[0] & 0x10) == 0)
{
nchars = 3;
goto valid;
}
if ((in[3] & 0xc0) != 0x80)
goto invalid;
nchars = 4;
valid:
switch (unicode_display)
{
case unicode_locale:
/* Copy the bytes into the output buffer as is. */
memcpy (out, in, nchars);
out += nchars;
break;
case unicode_invalid:
case unicode_hex:
*out++ = unicode_display == unicode_hex ? '<' : '{';
*out++ = '0';
*out++ = 'x';
for (j = 0; j < nchars; j++)
out += sprintf (out, "%02x", in [j]);
*out++ = unicode_display == unicode_hex ? '>' : '}';
break;
case unicode_highlight:
if (isatty (1))
out += sprintf (out, "\x1B[31;47m"); /* Red. */
/* Fall through. */
case unicode_escape:
switch (nchars)
{
case 2:
out += sprintf (out, "\\u%02x%02x",
((in[0] & 0x1c) >> 2),
((in[0] & 0x03) << 6) | (in[1] & 0x3f));
break;
case 3:
out += sprintf (out, "\\u%02x%02x",
((in[0] & 0x0f) << 4) | ((in[1] & 0x3c) >> 2),
((in[1] & 0x03) << 6) | ((in[2] & 0x3f)));
break;
case 4:
out += sprintf (out, "\\u%02x%02x%02x",
((in[0] & 0x07) << 6) | ((in[1] & 0x3c) >> 2),
((in[1] & 0x03) << 6) | ((in[2] & 0x3c) >> 2),
((in[2] & 0x03) << 6) | ((in[3] & 0x3f)));
break;
default:
/* URG. */
break;
}
if (unicode_display == unicode_highlight && isatty (1))
out += sprintf (out, "\x1B[0m"); /* Default colour. */
break;
default:
/* URG */
break;
}
* consumed = nchars;
return out - orig_out;
invalid:
/* Not a valid UTF-8 sequence. */
*out = *in;
* consumed = 1;
return 1;
}
/* Returns a version of IN with any control characters
replaced by escape sequences. Uses a static buffer
if necessary.
If unicode display is enabled, then also handles the
conversion of unicode characters. */
static const char *
sanitize_string (const char * in)
{
static char * buffer = NULL;
static size_t buffer_len = 0;
const char * original = in;
char * out;
/* Paranoia. */
if (in == NULL)
return "";
/* See if any conversion is necessary. In the majority
of cases it will not be needed. */
do
{
unsigned char c = *in++;
if (c == 0)
return original;
if (ISCNTRL (c))
break;
if (unicode_display != unicode_default && c >= 0xc0)
break;
}
while (1);
/* Copy the input, translating as needed. */
in = original;
/* For 2 char unicode, max out is 12 (colour escapes) + 6, ie. 9 per in
For hex, max out is 8 for 2 char unicode, ie. 4 per in.
3 and 4 char unicode produce less output for input. */
size_t max_needed = strlen (in) * 9 + 1;
if (buffer_len < max_needed)
{
buffer_len = max_needed;
free (buffer);
buffer = xmalloc (buffer_len);
}
out = buffer;
do
{
unsigned char c = *in++;
if (c == 0)
break;
if (ISCNTRL (c))
{
*out++ = '^';
*out++ = c + 0x40;
}
else if (unicode_display != unicode_default && c >= 0xc0)
{
unsigned int num_consumed;
out += display_utf8 ((const unsigned char *) --in, out, &num_consumed);
in += num_consumed;
}
else
*out++ = c;
}
while (1);
*out = 0;
return buffer;
}
/* Returns TRUE if the specified section should be dumped. */
static bool
process_section_p (asection * section)
{
struct only * only;
if (only_list == NULL)
return true;
for (only = only_list; only; only = only->next)
if (strcmp (only->name, section->name) == 0)
{
only->seen = true;
return true;
}
return false;
}
/* Add an entry to the 'only' list. */
static void
add_only (char * name)
{
struct only * only;
/* First check to make sure that we do not
already have an entry for this name. */
for (only = only_list; only; only = only->next)
if (strcmp (only->name, name) == 0)
return;
only = xmalloc (sizeof * only);
only->name = name;
only->seen = false;
only->next = only_list;
only_list = only;
}
/* Release the memory used by the 'only' list.
PR 11225: Issue a warning message for unseen sections.
Only do this if none of the sections were seen. This is mainly to support
tools like the GAS testsuite where an object file is dumped with a list of
generic section names known to be present in a range of different file
formats. */
static void
free_only_list (void)
{
bool at_least_one_seen = false;
struct only * only;
struct only * next;
if (only_list == NULL)
return;
for (only = only_list; only; only = only->next)
if (only->seen)
{
at_least_one_seen = true;
break;
}
for (only = only_list; only; only = next)
{
if (! at_least_one_seen)
{
non_fatal (_("section '%s' mentioned in a -j option, "
"but not found in any input file"),
only->name);
exit_status = 1;
}
next = only->next;
free (only);
}
}
static void
dump_section_header (bfd *abfd, asection *section, void *data)
{
char *comma = "";
unsigned int opb = bfd_octets_per_byte (abfd, section);
int longest_section_name = *((int *) data);
/* Ignore linker created section. See elfNN_ia64_object_p in
bfd/elfxx-ia64.c. */
if (section->flags & SEC_LINKER_CREATED)
return;
/* PR 10413: Skip sections that we are ignoring. */
if (! process_section_p (section))
return;
printf ("%3d %-*s %08lx ", section->index, longest_section_name,
sanitize_string (bfd_section_name (section)),
(unsigned long) bfd_section_size (section) / opb);
bfd_printf_vma (abfd, bfd_section_vma (section));
printf (" ");
bfd_printf_vma (abfd, section->lma);
printf (" %08lx 2**%u", (unsigned long) section->filepos,
bfd_section_alignment (section));
if (! wide_output)
printf ("\n ");
printf (" ");
#define PF(x, y) \
if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }
PF (SEC_HAS_CONTENTS, "CONTENTS");
PF (SEC_ALLOC, "ALLOC");
PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
PF (SEC_LOAD, "LOAD");
PF (SEC_RELOC, "RELOC");
PF (SEC_READONLY, "READONLY");
PF (SEC_CODE, "CODE");
PF (SEC_DATA, "DATA");
PF (SEC_ROM, "ROM");
PF (SEC_DEBUGGING, "DEBUGGING");
PF (SEC_NEVER_LOAD, "NEVER_LOAD");
PF (SEC_EXCLUDE, "EXCLUDE");
PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");
if (bfd_get_arch (abfd) == bfd_arch_tic54x)
{
PF (SEC_TIC54X_BLOCK, "BLOCK");
PF (SEC_TIC54X_CLINK, "CLINK");
}
PF (SEC_SMALL_DATA, "SMALL_DATA");
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
{
PF (SEC_COFF_SHARED, "SHARED");
PF (SEC_COFF_NOREAD, "NOREAD");
}
else if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
{
PF (SEC_ELF_OCTETS, "OCTETS");
PF (SEC_ELF_PURECODE, "PURECODE");
}
PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
PF (SEC_GROUP, "GROUP");
if (bfd_get_arch (abfd) == bfd_arch_mep)
{
PF (SEC_MEP_VLIW, "VLIW");
}
if ((section->flags & SEC_LINK_ONCE) != 0)
{
const char *ls;
struct coff_comdat_info *comdat;
switch (section->flags & SEC_LINK_DUPLICATES)
{
default:
abort ();
case SEC_LINK_DUPLICATES_DISCARD:
ls = "LINK_ONCE_DISCARD";
break;
case SEC_LINK_DUPLICATES_ONE_ONLY:
ls = "LINK_ONCE_ONE_ONLY";
break;
case SEC_LINK_DUPLICATES_SAME_SIZE:
ls = "LINK_ONCE_SAME_SIZE";
break;
case SEC_LINK_DUPLICATES_SAME_CONTENTS:
ls = "LINK_ONCE_SAME_CONTENTS";
break;
}
printf ("%s%s", comma, ls);
comdat = bfd_coff_get_comdat_section (abfd, section);
if (comdat != NULL)
printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
comma = ", ";
}
if (bfd_is_section_compressed (abfd, section))
printf ("%sCOMPRESSED", comma);
printf ("\n");
#undef PF
}
/* Called on each SECTION in ABFD, update the int variable pointed to by
DATA which contains the string length of the longest section name. */
static void
find_longest_section_name (bfd *abfd ATTRIBUTE_UNUSED,
asection *section, void *data)
{
int *longest_so_far = (int *) data;
const char *name;
int len;
/* Ignore linker created section. */
if (section->flags & SEC_LINKER_CREATED)
return;
/* Skip sections that we are ignoring. */
if (! process_section_p (section))
return;
name = bfd_section_name (section);
len = (int) strlen (name);
if (len > *longest_so_far)
*longest_so_far = len;
}
static void
dump_headers (bfd *abfd)
{
/* The default width of 13 is just an arbitrary choice. */
int max_section_name_length = 13;
int bfd_vma_width;
#ifndef BFD64
bfd_vma_width = 10;
#else
/* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
if (bfd_get_arch_size (abfd) == 32)
bfd_vma_width = 10;
else
bfd_vma_width = 18;
#endif
printf (_("Sections:\n"));
if (wide_output)
bfd_map_over_sections (abfd, find_longest_section_name,
&max_section_name_length);