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- /* objdump.c -- dump information about an object file.
- Copyright 1990, 1991, 1992, 1993, 1994 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 2, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "getopt.h"
- #include "bucomm.h"
- #include <stdio.h>
- #include <ctype.h>
- #include "dis-asm.h"
- #include "libiberty.h"
-
- /* Internal headers for the ELF .stab-dump code - sorry. */
- #define BYTES_IN_WORD 32
- #include "aout/aout64.h"
-
- #ifndef FPRINTF_ALREADY_DECLARED
- extern int fprintf PARAMS ((FILE *, CONST char *, ...));
- #endif
-
- char *default_target = NULL; /* default at runtime */
-
- extern char *program_version;
-
- int show_version = 0; /* show the version number */
- int dump_section_contents; /* -s */
- int dump_section_headers; /* -h */
- boolean dump_file_header; /* -f */
- int dump_symtab; /* -t */
- int dump_dynamic_symtab; /* -T */
- int dump_reloc_info; /* -r */
- int dump_dynamic_reloc_info; /* -R */
- int dump_ar_hdrs; /* -a */
- int with_line_numbers; /* -l */
- int dump_stab_section_info; /* --stabs */
- boolean disassemble; /* -d */
- boolean disassemble_all; /* -D */
- boolean formats_info; /* -i */
- char *only; /* -j secname */
-
- /* Extra info to pass to the disassembler address printing function. */
- struct objdump_disasm_info {
- bfd *abfd;
- asection *sec;
- boolean require_sec;
- };
-
- /* Architecture to disassemble for, or default if NULL. */
- char *machine = (char *) NULL;
-
- /* The symbol table. */
- asymbol **syms;
-
- /* Number of symbols in `syms'. */
- long symcount = 0;
-
- /* The sorted symbol table. */
- asymbol **sorted_syms;
-
- /* Number of symbols in `sorted_syms'. */
- long sorted_symcount = 0;
-
- /* The dynamic symbol table. */
- asymbol **dynsyms;
-
- /* Number of symbols in `dynsyms'. */
- long dynsymcount = 0;
-
- /* Forward declarations. */
-
- static void
- display_file PARAMS ((char *filename, char *target));
-
- static void
- dump_data PARAMS ((bfd *abfd));
-
- static void
- dump_relocs PARAMS ((bfd *abfd));
-
- static void
- dump_dynamic_relocs PARAMS ((bfd * abfd));
-
- static void
- dump_reloc_set PARAMS ((bfd *, arelent **, long));
-
- static void
- dump_symbols PARAMS ((bfd *abfd, boolean dynamic));
-
- static void
- display_bfd PARAMS ((bfd *abfd));
-
- static void
- objdump_print_address PARAMS ((bfd_vma, struct disassemble_info *));
-
- void
- usage (stream, status)
- FILE *stream;
- int status;
- {
- fprintf (stream, "\
- Usage: %s [-ahifdDrRtTxsl] [-b bfdname] [-m machine] [-j section-name]\n\
- [--archive-headers] [--target=bfdname] [--disassemble]\n\
- [--disassemble-all] [--file-headers] [--section-headers] [--headers]\n\
- [--info] [--section=section-name] [--line-numbers]\n\
- [--architecture=machine] [--reloc] [--full-contents] [--stabs]\n\
- [--syms] [--all-headers] [--dynamic-syms] [--dynamic-reloc]\n\
- [--version] [--help] objfile...\n\
- at least one option besides -l (--line-numbers) must be given\n",
- program_name);
- exit (status);
- }
-
- static struct option long_options[]=
- {
- {"all-headers", no_argument, NULL, 'x'},
- {"architecture", required_argument, NULL, 'm'},
- {"archive-headers", no_argument, NULL, 'a'},
- {"disassemble", no_argument, NULL, 'd'},
- {"disassemble-all", no_argument, NULL, 'D'},
- {"dynamic-reloc", no_argument, NULL, 'R'},
- {"dynamic-syms", no_argument, NULL, 'T'},
- {"file-headers", no_argument, NULL, 'f'},
- {"full-contents", no_argument, NULL, 's'},
- {"headers", no_argument, NULL, 'h'},
- {"help", no_argument, NULL, 'H'},
- {"info", no_argument, NULL, 'i'},
- {"line-numbers", no_argument, NULL, 'l'},
- {"reloc", no_argument, NULL, 'r'},
- {"section", required_argument, NULL, 'j'},
- {"section-headers", no_argument, NULL, 'h'},
- {"stabs", no_argument, &dump_stab_section_info, 1},
- {"syms", no_argument, NULL, 't'},
- {"target", required_argument, NULL, 'b'},
- {"version", no_argument, &show_version, 1},
- {0, no_argument, 0, 0}
- };
-
- static void
- dump_section_header (abfd, section, ignored)
- bfd *abfd;
- asection *section;
- PTR ignored;
- {
- char *comma = "";
-
- #define PF(x,y) \
- if (section->flags & x) { printf("%s%s",comma,y); comma = ", "; }
-
-
- printf ("SECTION %d [%s]\t: size %08x",
- section->index,
- section->name,
- (unsigned) bfd_get_section_size_before_reloc (section));
- printf (" vma ");
- printf_vma (section->vma);
- printf (" align 2**%u\n ",
- section->alignment_power);
- PF (SEC_ALLOC, "ALLOC");
- PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
- PF (SEC_CONSTRUCTOR_TEXT, "CONSTRUCTOR TEXT");
- PF (SEC_CONSTRUCTOR_DATA, "CONSTRUCTOR DATA");
- PF (SEC_CONSTRUCTOR_BSS, "CONSTRUCTOR BSS");
- PF (SEC_LOAD, "LOAD");
- PF (SEC_RELOC, "RELOC");
- #ifdef SEC_BALIGN
- PF (SEC_BALIGN, "BALIGN");
- #endif
- 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");
- printf ("\n");
- #undef PF
- }
-
- static void
- dump_headers (abfd)
- bfd *abfd;
- {
- bfd_map_over_sections (abfd, dump_section_header, (PTR) NULL);
- }
-
- static asymbol **
- slurp_symtab (abfd)
- bfd *abfd;
- {
- asymbol **sy = (asymbol **) NULL;
- long storage;
-
- if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
- {
- printf ("No symbols in \"%s\".\n", bfd_get_filename (abfd));
- return NULL;
- }
-
- storage = bfd_get_symtab_upper_bound (abfd);
- if (storage < 0)
- bfd_fatal (bfd_get_filename (abfd));
-
- if (storage)
- {
- sy = (asymbol **) xmalloc (storage);
- }
- symcount = bfd_canonicalize_symtab (abfd, sy);
- if (symcount < 0)
- bfd_fatal (bfd_get_filename (abfd));
- if (symcount == 0)
- fprintf (stderr, "%s: %s: No symbols\n",
- program_name, bfd_get_filename (abfd));
- return sy;
- }
-
- /* Read in the dynamic symbols. */
-
- static asymbol **
- slurp_dynamic_symtab (abfd)
- bfd *abfd;
- {
- asymbol **sy = (asymbol **) NULL;
- long storage;
-
- storage = bfd_get_dynamic_symtab_upper_bound (abfd);
- if (storage < 0)
- {
- if (!(bfd_get_file_flags (abfd) & DYNAMIC))
- {
- fprintf (stderr, "%s: %s: not a dynamic object\n",
- program_name, bfd_get_filename (abfd));
- return NULL;
- }
-
- bfd_fatal (bfd_get_filename (abfd));
- }
-
- if (storage)
- {
- sy = (asymbol **) xmalloc (storage);
- }
- dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
- if (dynsymcount < 0)
- bfd_fatal (bfd_get_filename (abfd));
- if (dynsymcount == 0)
- fprintf (stderr, "%s: %s: No dynamic symbols\n",
- program_name, bfd_get_filename (abfd));
- return sy;
- }
-
- /* Filter out (in place) symbols that are useless for disassembly.
- COUNT is the number of elements in SYMBOLS.
- Return the number of useful symbols. */
-
- long
- remove_useless_symbols (symbols, count)
- asymbol **symbols;
- long count;
- {
- register asymbol **in_ptr = symbols, **out_ptr = symbols;
-
- while (--count >= 0)
- {
- asymbol *sym = *in_ptr++;
-
- if (sym->name == NULL || sym->name[0] == '\0')
- continue;
- if (sym->flags & (BSF_DEBUGGING))
- continue;
- if (bfd_is_und_section (sym->section)
- || bfd_is_com_section (sym->section))
- continue;
-
- *out_ptr++ = sym;
- }
- return out_ptr - symbols;
- }
-
- /* Sort symbols into value order. */
-
- static int
- compare_symbols (ap, bp)
- const PTR ap;
- const PTR bp;
- {
- const asymbol *a = *(const asymbol **)ap;
- const asymbol *b = *(const asymbol **)bp;
-
- if (a->value > b->value)
- return 1;
- else if (a->value < b->value)
- return -1;
-
- if (a->section > b->section)
- return 1;
- else if (a->section < b->section)
- return -1;
- return 0;
- }
-
- /* Sort relocs into address order. */
-
- static int
- compare_relocs (ap, bp)
- const PTR ap;
- const PTR bp;
- {
- const arelent *a = *(const arelent **)ap;
- const arelent *b = *(const arelent **)bp;
-
- if (a->address > b->address)
- return 1;
- else if (a->address < b->address)
- return -1;
-
- return compare_symbols ((const PTR) a->sym_ptr_ptr,
- (const PTR) b->sym_ptr_ptr);
- }
-
- /* Print VMA symbolically to INFO if possible. */
-
- static void
- objdump_print_address (vma, info)
- bfd_vma vma;
- struct disassemble_info *info;
- {
- /* @@ For relocateable files, should filter out symbols belonging to
- the wrong section. Unfortunately, not enough information is supplied
- to this routine to determine the correct section in all cases. */
- /* @@ Would it speed things up to cache the last two symbols returned,
- and maybe their address ranges? For many processors, only one memory
- operand can be present at a time, so the 2-entry cache wouldn't be
- constantly churned by code doing heavy memory accesses. */
-
- /* Indices in `sorted_syms'. */
- long min = 0;
- long max = sorted_symcount;
- long thisplace;
-
- bfd_signed_vma vardiff;
-
- fprintf_vma (info->stream, vma);
-
- if (sorted_symcount < 1)
- return;
-
- /* Perform a binary search looking for the closest symbol to the
- required value. We are searching the range (min, max]. */
- while (min + 1 < max)
- {
- asymbol *sym;
-
- thisplace = (max + min) / 2;
- sym = sorted_syms[thisplace];
-
- vardiff = sym->value - vma;
-
- if (vardiff > 0)
- max = thisplace;
- else if (vardiff < 0)
- min = thisplace;
- else
- {
- min = thisplace;
- break;
- }
- }
-
- /* The symbol we want is now in min, the low end of the range we
- were searching. */
- thisplace = min;
-
- {
- /* If this symbol isn't global, search for one with the same value
- that is. */
- bfd_vma val = sorted_syms[thisplace]->value;
- long i;
- if (sorted_syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
- for (i = thisplace - 1; i >= 0; i--)
- {
- if (sorted_syms[i]->value == val
- && (!(sorted_syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
- || ((sorted_syms[thisplace]->flags & BSF_DEBUGGING)
- && !(sorted_syms[i]->flags & BSF_DEBUGGING))))
- {
- thisplace = i;
- break;
- }
- }
- if (sorted_syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
- for (i = thisplace + 1; i < sorted_symcount; i++)
- {
- if (sorted_syms[i]->value == val
- && (!(sorted_syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
- || ((sorted_syms[thisplace]->flags & BSF_DEBUGGING)
- && !(sorted_syms[i]->flags & BSF_DEBUGGING))))
- {
- thisplace = i;
- break;
- }
- }
- }
- {
- /* If the file is relocateable, and the symbol could be from this
- section, prefer a symbol from this section over symbols from
- others, even if the other symbol's value might be closer.
-
- Note that this may be wrong for some symbol references if the
- sections have overlapping memory ranges, but in that case there's
- no way to tell what's desired without looking at the relocation
- table. */
- struct objdump_disasm_info *aux;
- long i;
-
- aux = (struct objdump_disasm_info *) info->application_data;
- if (sorted_syms[thisplace]->section != aux->sec
- && (aux->require_sec
- || ((aux->abfd->flags & HAS_RELOC) != 0
- && vma >= bfd_get_section_vma (aux->abfd, aux->sec)
- && vma < (bfd_get_section_vma (aux->abfd, aux->sec)
- + bfd_get_section_size_before_reloc (aux->sec)))))
- {
- for (i = thisplace + 1; i < sorted_symcount; i++)
- {
- if (sorted_syms[i]->value != sorted_syms[thisplace]->value)
- break;
- }
- --i;
- for (; i >= 0; i--)
- {
- if (sorted_syms[i]->section == aux->sec)
- {
- thisplace = i;
- break;
- }
- }
-
- if (sorted_syms[thisplace]->section != aux->sec)
- {
- /* We didn't find a good symbol with a smaller value.
- Look for one with a larger value. */
- for (i = thisplace + 1; i < sorted_symcount; i++)
- {
- if (sorted_syms[i]->section == aux->sec)
- {
- thisplace = i;
- break;
- }
- }
- }
- }
- }
-
- fprintf (info->stream, " <%s", sorted_syms[thisplace]->name);
- if (sorted_syms[thisplace]->value > vma)
- {
- char buf[30], *p = buf;
- sprintf_vma (buf, sorted_syms[thisplace]->value - vma);
- while (*p == '0')
- p++;
- fprintf (info->stream, "-%s", p);
- }
- else if (vma > sorted_syms[thisplace]->value)
- {
- char buf[30], *p = buf;
- sprintf_vma (buf, vma - sorted_syms[thisplace]->value);
- while (*p == '0')
- p++;
- fprintf (info->stream, "+%s", p);
- }
- fprintf (info->stream, ">");
- }
-
- void
- disassemble_data (abfd)
- bfd *abfd;
- {
- long i;
- unsigned int (*print) () = 0; /* Old style */
- disassembler_ftype disassemble_fn = 0; /* New style */
- struct disassemble_info disasm_info;
- struct objdump_disasm_info aux;
-
- int prevline = 0;
- char *prev_function = NULL;
-
- asection *section;
-
- boolean done_dot = false;
-
- /* Replace symbol section relative values with abs values. */
- for (i = 0; i < symcount; i++)
- {
- syms[i]->value += syms[i]->section->vma;
- }
-
- /* We make a copy of syms to sort. We don't want to sort syms
- because that will screw up the relocs. */
- sorted_syms = (asymbol **) xmalloc (symcount * sizeof (asymbol *));
- memcpy (sorted_syms, syms, symcount * sizeof (asymbol *));
-
- sorted_symcount = remove_useless_symbols (sorted_syms, symcount);
-
- /* Sort the symbols into section and symbol order */
- qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);
-
- INIT_DISASSEMBLE_INFO(disasm_info, stdout);
- disasm_info.application_data = (PTR) &aux;
- aux.abfd = abfd;
- disasm_info.print_address_func = objdump_print_address;
-
- if (machine != (char *) NULL)
- {
- bfd_arch_info_type *info = bfd_scan_arch (machine);
- if (info == NULL)
- {
- fprintf (stderr, "%s: Can't use supplied machine %s\n",
- program_name,
- machine);
- exit (1);
- }
- abfd->arch_info = info;
- }
-
- /* See if we can disassemble using bfd. */
-
- if (abfd->arch_info->disassemble)
- {
- print = abfd->arch_info->disassemble;
- }
- else
- {
- disassemble_fn = disassembler (abfd);
- if (!disassemble_fn)
- {
- fprintf (stderr, "%s: Can't disassemble for architecture %s\n",
- program_name,
- bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
- exit (1);
- }
- }
-
- for (section = abfd->sections;
- section != (asection *) NULL;
- section = section->next)
- {
- bfd_byte *data = NULL;
- bfd_size_type datasize = 0;
- arelent **relbuf = NULL;
- arelent **relpp = NULL;
- arelent **relppend = NULL;
-
- if ((section->flags & SEC_LOAD) == 0
- || (! disassemble_all
- && only == NULL
- && (section->flags & SEC_CODE) == 0))
- continue;
- if (only != (char *) NULL && strcmp (only, section->name) != 0)
- continue;
-
- if (dump_reloc_info
- && (section->flags & SEC_RELOC) != 0)
- {
- long relsize;
-
- relsize = bfd_get_reloc_upper_bound (abfd, section);
- if (relsize < 0)
- bfd_fatal (bfd_get_filename (abfd));
-
- if (relsize > 0)
- {
- long relcount;
-
- relbuf = (arelent **) xmalloc (relsize);
- relcount = bfd_canonicalize_reloc (abfd, section, relbuf, syms);
- if (relcount < 0)
- bfd_fatal (bfd_get_filename (abfd));
-
- /* Sort the relocs by address. */
- qsort (relbuf, relcount, sizeof (arelent *), compare_relocs);
-
- relpp = relbuf;
- relppend = relpp + relcount;
- }
- }
-
- printf ("Disassembly of section %s:\n", section->name);
-
- datasize = bfd_get_section_size_before_reloc (section);
- if (datasize == 0)
- continue;
-
- data = (bfd_byte *) xmalloc ((size_t) datasize);
-
- bfd_get_section_contents (abfd, section, data, 0, datasize);
-
- aux.sec = section;
- disasm_info.buffer = data;
- disasm_info.buffer_vma = section->vma;
- disasm_info.buffer_length = datasize;
- i = 0;
- while (i < disasm_info.buffer_length)
- {
- int bytes;
-
- if (data[i] == 0 && data[i + 1] == 0 && data[i + 2] == 0 &&
- data[i + 3] == 0)
- {
- if (done_dot == false)
- {
- printf ("...\n");
- done_dot = true;
- }
- bytes = 4;
- }
- else
- {
- done_dot = false;
- if (with_line_numbers)
- {
- CONST char *filename;
- CONST char *functionname;
- unsigned int line;
-
- if (bfd_find_nearest_line (abfd,
- section,
- syms,
- section->vma + i,
- &filename,
- &functionname,
- &line))
- {
- if (functionname
- && *functionname != '\0'
- && (prev_function == NULL
- || strcmp (functionname, prev_function) != 0))
- {
- printf ("%s():\n", functionname);
- if (prev_function != NULL)
- free (prev_function);
- prev_function = xmalloc (strlen (functionname) + 1);
- strcpy (prev_function, functionname);
- }
- if (!filename)
- filename = "???";
- if (line && line != prevline)
- {
- printf ("%s:%u\n", filename, line);
- prevline = line;
- }
- }
- }
- aux.require_sec = true;
- objdump_print_address (section->vma + i, &disasm_info);
- aux.require_sec = false;
- putchar (' ');
-
- if (disassemble_fn)
- {
- /* New style */
- bytes = (*disassemble_fn) (section->vma + i, &disasm_info);
- if (bytes < 0)
- break;
- }
- else
- {
- /* Old style */
- bytes = print (section->vma + i, data + i, stdout);
- }
- putchar ('\n');
- }
-
- if (dump_reloc_info
- && (section->flags & SEC_RELOC) != 0)
- {
- while (relpp < relppend
- && ((*relpp)->address >= i
- && (*relpp)->address < i + bytes))
- {
- arelent *q;
- const char *sym_name;
-
- q = *relpp;
-
- printf ("\t\tRELOC: ");
-
- printf_vma (section->vma + q->address);
-
- printf (" %s ", q->howto->name);
-
- if (q->sym_ptr_ptr != NULL
- && *q->sym_ptr_ptr != NULL)
- {
- sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
- if (sym_name == NULL || *sym_name == '\0')
- {
- asection *sym_sec;
-
- sym_sec = bfd_get_section (*q->sym_ptr_ptr);
- sym_name = bfd_get_section_name (abfd, sym_sec);
- if (sym_name == NULL || *sym_name == '\0')
- sym_name = "*unknown*";
- }
- }
-
- printf ("%s", sym_name);
-
- if (q->addend)
- {
- printf ("+0x");
- printf_vma (q->addend);
- }
-
- printf ("\n");
-
- ++relpp;
- }
- }
-
- i += bytes;
- }
-
- free (data);
- if (relbuf != NULL)
- free (relbuf);
- }
- }
-
-
- /* Define a table of stab values and print-strings. We wish the initializer
- could be a direct-mapped table, but instead we build one the first
- time we need it. */
-
- char **stab_name;
-
- struct stab_print {
- int value;
- char *string;
- };
-
- struct stab_print stab_print[] = {
- #define __define_stab(NAME, CODE, STRING) {CODE, STRING},
- #include "aout/stab.def"
- #undef __define_stab
- {0, ""}
- };
-
- void dump_section_stabs PARAMS ((bfd *abfd, char *stabsect_name,
- char *strsect_name));
-
- /* Dump the stabs sections from an object file that has a section that
- uses Sun stabs encoding. It has to use some hooks into BFD because
- string table sections are not normally visible to BFD callers. */
-
- void
- dump_stabs (abfd)
- bfd *abfd;
- {
- /* Allocate and initialize stab name array if first time. */
- if (stab_name == NULL)
- {
- int i;
-
- stab_name = (char **) xmalloc (256 * sizeof(char *));
- /* Clear the array. */
- for (i = 0; i < 256; i++)
- stab_name[i] = NULL;
- /* Fill in the defined stabs. */
- for (i = 0; *stab_print[i].string; i++)
- stab_name[stab_print[i].value] = stab_print[i].string;
- }
-
- dump_section_stabs (abfd, ".stab", ".stabstr");
- dump_section_stabs (abfd, ".stab.excl", ".stab.exclstr");
- dump_section_stabs (abfd, ".stab.index", ".stab.indexstr");
- dump_section_stabs (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
- }
-
- static struct internal_nlist *stabs;
- static bfd_size_type stab_size;
-
- static char *strtab;
- static bfd_size_type stabstr_size;
-
- /* Read ABFD's stabs section STABSECT_NAME into `stabs'
- and string table section STRSECT_NAME into `strtab'.
- If the section exists and was read, allocate the space and return true.
- Otherwise return false. */
-
- boolean
- read_section_stabs (abfd, stabsect_name, strsect_name)
- bfd *abfd;
- char *stabsect_name;
- char *strsect_name;
- {
- asection *stabsect, *stabstrsect;
-
- stabsect = bfd_get_section_by_name (abfd, stabsect_name);
- if (0 == stabsect)
- {
- printf ("No %s section present\n\n", stabsect_name);
- return false;
- }
-
- stabstrsect = bfd_get_section_by_name (abfd, strsect_name);
- if (0 == stabstrsect)
- {
- fprintf (stderr, "%s: %s has no %s section\n", program_name,
- bfd_get_filename (abfd), strsect_name);
- return false;
- }
-
- stab_size = bfd_section_size (abfd, stabsect);
- stabstr_size = bfd_section_size (abfd, stabstrsect);
-
- stabs = (struct internal_nlist *) xmalloc (stab_size);
- strtab = (char *) xmalloc (stabstr_size);
-
- if (! bfd_get_section_contents (abfd, stabsect, (PTR) stabs, 0, stab_size))
- {
- fprintf (stderr, "%s: Reading %s section of %s failed: %s\n",
- program_name, stabsect_name, bfd_get_filename (abfd),
- bfd_errmsg (bfd_get_error ()));
- free (stabs);
- free (strtab);
- return false;
- }
-
- if (! bfd_get_section_contents (abfd, stabstrsect, (PTR) strtab, 0,
- stabstr_size))
- {
- fprintf (stderr, "%s: Reading %s section of %s failed: %s\n",
- program_name, strsect_name, bfd_get_filename (abfd),
- bfd_errmsg (bfd_get_error ()));
- free (stabs);
- free (strtab);
- return false;
- }
-
- return true;
- }
-
- #define SWAP_SYMBOL(symp, abfd) \
- { \
- (symp)->n_strx = bfd_h_get_32(abfd, \
- (unsigned char *)&(symp)->n_strx); \
- (symp)->n_desc = bfd_h_get_16 (abfd, \
- (unsigned char *)&(symp)->n_desc); \
- (symp)->n_value = bfd_h_get_32 (abfd, \
- (unsigned char *)&(symp)->n_value); \
- }
-
- /* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
- using string table section STRSECT_NAME (in `strtab'). */
-
- void
- print_section_stabs (abfd, stabsect_name, strsect_name)
- bfd *abfd;
- char *stabsect_name;
- char *strsect_name;
- {
- int i;
- unsigned file_string_table_offset = 0, next_file_string_table_offset = 0;
- struct internal_nlist *stabp = stabs,
- *stabs_end = (struct internal_nlist *) (stab_size + (char *) stabs);
-
- printf ("Contents of %s section:\n\n", stabsect_name);
- printf ("Symnum n_type n_othr n_desc n_value n_strx String\n");
-
- /* Loop through all symbols and print them.
-
- We start the index at -1 because there is a dummy symbol on
- the front of stabs-in-{coff,elf} sections that supplies sizes. */
-
- for (i = -1; stabp < stabs_end; stabp++, i++)
- {
- SWAP_SYMBOL (stabp, abfd);
- printf ("\n%-6d ", i);
- /* Either print the stab name, or, if unnamed, print its number
- again (makes consistent formatting for tools like awk). */
- if (stab_name[stabp->n_type])
- printf ("%-6s", stab_name[stabp->n_type]);
- else if (stabp->n_type == N_UNDF)
- printf ("HdrSym");
- else
- printf ("%-6d", stabp->n_type);
- printf (" %-6d %-6d ", stabp->n_other, stabp->n_desc);
- printf_vma (stabp->n_value);
- printf (" %-6lu", stabp->n_strx);
-
- /* Symbols with type == 0 (N_UNDF) specify the length of the
- string table associated with this file. We use that info
- to know how to relocate the *next* file's string table indices. */
-
- if (stabp->n_type == N_UNDF)
- {
- file_string_table_offset = next_file_string_table_offset;
- next_file_string_table_offset += stabp->n_value;
- }
- else
- {
- /* Using the (possibly updated) string table offset, print the
- string (if any) associated with this symbol. */
-
- if ((stabp->n_strx + file_string_table_offset) < stabstr_size)
- printf (" %s", &strtab[stabp->n_strx + file_string_table_offset]);
- else
- printf (" *");
- }
- }
- printf ("\n\n");
- }
-
- void
- dump_section_stabs (abfd, stabsect_name, strsect_name)
- bfd *abfd;
- char *stabsect_name;
- char *strsect_name;
- {
- if (read_section_stabs (abfd, stabsect_name, strsect_name))
- {
- print_section_stabs (abfd, stabsect_name, strsect_name);
- free (stabs);
- free (strtab);
- }
- }
-
- static void
- dump_bfd_header (abfd)
- bfd *abfd;
- {
- char *comma = "";
-
- printf ("architecture: %s, ",
- bfd_printable_arch_mach (bfd_get_arch (abfd),
- bfd_get_mach (abfd)));
- printf ("flags 0x%08x:\n", abfd->flags);
-
- #define PF(x, y) if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
- PF (HAS_RELOC, "HAS_RELOC");
- PF (EXEC_P, "EXEC_P");
- PF (HAS_LINENO, "HAS_LINENO");
- PF (HAS_DEBUG, "HAS_DEBUG");
- PF (HAS_SYMS, "HAS_SYMS");
- PF (HAS_LOCALS, "HAS_LOCALS");
- PF (DYNAMIC, "DYNAMIC");
- PF (WP_TEXT, "WP_TEXT");
- PF (D_PAGED, "D_PAGED");
- PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
- printf ("\nstart address 0x");
- printf_vma (abfd->start_address);
- }
-
- static void
- display_bfd (abfd)
- bfd *abfd;
- {
- char **matching;
-
- if (!bfd_check_format_matches (abfd, bfd_object, &matching))
- {
- bfd_nonfatal (bfd_get_filename (abfd));
- if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
- {
- list_matching_formats (matching);
- free (matching);
- }
- return;
- }
-
- printf ("\n%s: file format %s\n", bfd_get_filename (abfd),
- abfd->xvec->name);
- if (dump_ar_hdrs)
- print_arelt_descr (stdout, abfd, true);
- if (dump_file_header)
- dump_bfd_header (abfd);
- putchar ('\n');
- if (dump_section_headers)
- dump_headers (abfd);
- if (dump_symtab || dump_reloc_info || disassemble)
- {
- syms = slurp_symtab (abfd);
- }
- if (dump_dynamic_symtab || dump_dynamic_reloc_info)
- {
- dynsyms = slurp_dynamic_symtab (abfd);
- }
- if (dump_symtab)
- dump_symbols (abfd, false);
- if (dump_dynamic_symtab)
- dump_symbols (abfd, true);
- if (dump_stab_section_info)
- dump_stabs (abfd);
- if (dump_reloc_info && ! disassemble)
- dump_relocs (abfd);
- if (dump_dynamic_reloc_info)
- dump_dynamic_relocs (abfd);
- if (dump_section_contents)
- dump_data (abfd);
- if (disassemble)
- disassemble_data (abfd);
- }
-
- static void
- display_file (filename, target)
- char *filename;
- char *target;
- {
- bfd *file, *arfile = (bfd *) NULL;
-
- file = bfd_openr (filename, target);
- if (file == NULL)
- {
- bfd_nonfatal (filename);
- return;
- }
-
- if (bfd_check_format (file, bfd_archive) == true)
- {
- bfd *last_arfile = NULL;
-
- printf ("In archive %s:\n", bfd_get_filename (file));
- for (;;)
- {
- bfd_set_error (bfd_error_no_error);
-
- arfile = bfd_openr_next_archived_file (file, arfile);
- if (arfile == NULL)
- {
- if (bfd_get_error () != bfd_error_no_more_archived_files)
- {
- bfd_nonfatal (bfd_get_filename (file));
- }
- break;
- }
-
- display_bfd (arfile);
-
- if (last_arfile != NULL)
- bfd_close (last_arfile);
- last_arfile = arfile;
- }
-
- if (last_arfile != NULL)
- bfd_close (last_arfile);
- }
- else
- display_bfd (file);
-
- bfd_close (file);
- }
-
- /* Actually display the various requested regions */
-
- static void
- dump_data (abfd)
- bfd *abfd;
- {
- asection *section;
- bfd_byte *data = 0;
- bfd_size_type datasize = 0;
- bfd_size_type i;
-
- for (section = abfd->sections; section != NULL; section =
- section->next)
- {
- int onaline = 16;
-
- if (only == (char *) NULL ||
- strcmp (only, section->name) == 0)
- {
- if (section->flags & SEC_HAS_CONTENTS)
- {
- printf ("Contents of section %s:\n", section->name);
-
- if (bfd_section_size (abfd, section) == 0)
- continue;
- data = (bfd_byte *) xmalloc ((size_t) bfd_section_size (abfd, section));
- datasize = bfd_section_size (abfd, section);
-
-
- bfd_get_section_contents (abfd, section, (PTR) data, 0, bfd_section_size (abfd, section));
-
- for (i = 0; i < bfd_section_size (abfd, section); i += onaline)
- {
- bfd_size_type j;
-
- printf (" %04lx ", (unsigned long int) (i + section->vma));
- for (j = i; j < i + onaline; j++)
- {
- if (j < bfd_section_size (abfd, section))
- printf ("%02x", (unsigned) (data[j]));
- else
- printf (" ");
- if ((j & 3) == 3)
- printf (" ");
- }
-
- printf (" ");
- for (j = i; j < i + onaline; j++)
- {
- if (j >= bfd_section_size (abfd, section))
- printf (" ");
- else
- printf ("%c", isprint (data[j]) ? data[j] : '.');
- }
- putchar ('\n');
- }
- free (data);
- }
- }
- }
- }
-
- /* Should perhaps share code and display with nm? */
- static void
- dump_symbols (abfd, dynamic)
- bfd *abfd;
- boolean dynamic;
- {
- asymbol **current;
- long max;
- long count;
-
- if (dynamic)
- {
- current = dynsyms;
- max = dynsymcount;
- if (max == 0)
- return;
- printf ("DYNAMIC SYMBOL TABLE:\n");
- }
- else
- {
- current = syms;
- max = symcount;
- if (max == 0)
- return;
- printf ("SYMBOL TABLE:\n");
- }
-
- for (count = 0; count < max; count++)
- {
- if (*current)
- {
- bfd *cur_bfd = bfd_asymbol_bfd(*current);
- if (cur_bfd)
- {
- bfd_print_symbol (cur_bfd,
- stdout,
- *current, bfd_print_symbol_all);
- printf ("\n");
- }
- }
- current++;
- }
- printf ("\n");
- printf ("\n");
- }
-
- static void
- dump_relocs (abfd)
- bfd *abfd;
- {
- arelent **relpp;
- long relcount;
- asection *a;
-
- for (a = abfd->sections; a != (asection *) NULL; a = a->next)
- {
- long relsize;
-
- if (bfd_is_abs_section (a))
- continue;
- if (bfd_is_und_section (a))
- continue;
- if (bfd_is_com_section (a))
- continue;
-
- if (only)
- {
- if (strcmp (only, a->name))
- continue;
- }
- else if ((a->flags & SEC_RELOC) == 0)
- continue;
-
- printf ("RELOCATION RECORDS FOR [%s]:", a->name);
-
- relsize = bfd_get_reloc_upper_bound (abfd, a);
- if (relsize < 0)
- bfd_fatal (bfd_get_filename (abfd));
-
- if (relsize == 0)
- {
- printf (" (none)\n\n");
- }
- else
- {
- relpp = (arelent **) xmalloc (relsize);
- relcount = bfd_canonicalize_reloc (abfd, a, relpp, syms);
- if (relcount < 0)
- bfd_fatal (bfd_get_filename (abfd));
- else if (relcount == 0)
- {
- printf (" (none)\n\n");
- }
- else
- {
- printf ("\n");
- dump_reloc_set (abfd, relpp, relcount);
- printf ("\n\n");
- }
- free (relpp);
- }
- }
- }
-
- static void
- dump_dynamic_relocs (abfd)
- bfd *abfd;
- {
- long relsize;
- arelent **relpp;
- long relcount;
-
- printf ("DYNAMIC RELOCATION RECORDS");
-
- relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
- if (relsize < 0)
- bfd_fatal (bfd_get_filename (abfd));
-
- if (relsize == 0)
- {
- printf (" (none)\n\n");
- }
- else
- {
- relpp = (arelent **) xmalloc (relsize);
- relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
- if (relcount < 0)
- bfd_fatal (bfd_get_filename (abfd));
- else if (relcount == 0)
- {
- printf (" (none)\n\n");
- }
- else
- {
- printf ("\n");
- dump_reloc_set (abfd, relpp, relcount);
- printf ("\n\n");
- }
- free (relpp);
- }
- }
-
- static void
- dump_reloc_set (abfd, relpp, relcount)
- bfd *abfd;
- arelent **relpp;
- long relcount;
- {
- arelent **p;
-
- /* Get column headers lined up reasonably. */
- {
- static int width;
- if (width == 0)
- {
- char buf[30];
- sprintf_vma (buf, (bfd_vma) -1);
- width = strlen (buf) - 7;
- }
- printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
- }
-
- for (p = relpp; relcount && *p != (arelent *) NULL; p++, relcount--)
- {
- arelent *q = *p;
- CONST char *sym_name;
- CONST char *section_name;
-
- if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
- {
- sym_name = (*(q->sym_ptr_ptr))->name;
- section_name = (*(q->sym_ptr_ptr))->section->name;
- }
- else
- {
- sym_name = NULL;
- section_name = NULL;
- }
- if (sym_name)
- {
- printf_vma (q->address);
- printf (" %-16s %s",
- q->howto->name,
- sym_name);
- }
- else
- {
- if (section_name == (CONST char *) NULL)
- section_name = "*unknown*";
- printf_vma (q->address);
- printf (" %-16s [%s]",
- q->howto->name,
- section_name);
- }
- if (q->addend)
- {
- printf ("+0x");
- printf_vma (q->addend);
- }
- printf ("\n");
- }
- }
-
- /* The length of the longest architecture name + 1. */
- #define LONGEST_ARCH sizeof("rs6000:6000")
-
- /* List the targets that BFD is configured to support, each followed
- by its endianness and the architectures it supports. */
-
- static void
- display_target_list ()
- {
- extern char *tmpnam ();
- extern bfd_target *bfd_target_vector[];
- char *dummy_name;
- int t;
-
- dummy_name = tmpnam ((char *) NULL);
- for (t = 0; bfd_target_vector[t]; t++)
- {
- bfd_target *p = bfd_target_vector[t];
- bfd *abfd = bfd_openw (dummy_name, p->name);
- int a;
-
- printf ("%s\n (header %s, data %s)\n", p->name,
- p->header_byteorder_big_p ? "big endian" : "little endian",
- p->byteorder_big_p ? "big endian" : "little endian");
-
- if (abfd == NULL)
- {
- bfd_nonfatal (dummy_name);
- continue;
- }
-
- if (! bfd_set_format (abfd, bfd_object))
- {
- if (bfd_get_error () != bfd_error_invalid_operation)
- bfd_nonfatal (p->name);
- continue;
- }
-
- for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
- if (bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0))
- printf (" %s\n",
- bfd_printable_arch_mach ((enum bfd_architecture) a, 0));
- }
- unlink (dummy_name);
- }
-
- /* Print a table showing which architectures are supported for entries
- FIRST through LAST-1 of bfd_target_vector (targets across,
- architectures down). */
-
- static void
- display_info_table (first, last)
- int first;
- int last;
- {
- extern bfd_target *bfd_target_vector[];
- extern char *tmpnam ();
- int t, a;
- char *dummy_name;
-
- /* Print heading of target names. */
- printf ("\n%*s", (int) LONGEST_ARCH, " ");
- for (t = first; t < last && bfd_target_vector[t]; t++)
- printf ("%s ", bfd_target_vector[t]->name);
- putchar ('\n');
-
- dummy_name = tmpnam ((char *) NULL);
- for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
- if (strcmp (bfd_printable_arch_mach (a, 0), "UNKNOWN!") != 0)
- {
- printf ("%*s ", (int) LONGEST_ARCH - 1,
- bfd_printable_arch_mach (a, 0));
- for (t = first; t < last && bfd_target_vector[t]; t++)
- {
- bfd_target *p = bfd_target_vector[t];
- boolean ok = true;
- bfd *abfd = bfd_openw (dummy_name, p->name);
-
- if (abfd == NULL)
- {
- bfd_nonfatal (p->name);
- ok = false;
- }
-
- if (ok)
- {
- if (! bfd_set_format (abfd, bfd_object))
- {
- if (bfd_get_error () != bfd_error_invalid_operation)
- bfd_nonfatal (p->name);
- ok = false;
- }
- }
-
- if (ok)
- {
- if (! bfd_set_arch_mach (abfd, a, 0))
- ok = false;
- }
-
- if (ok)
- printf ("%s ", p->name);
- else
- {
- int l = strlen (p->name);
- while (l--)
- putchar ('-');
- putchar (' ');
- }
- }
- putchar ('\n');
- }
- unlink (dummy_name);
- }
-
- /* Print tables of all the target-architecture combinations that
- BFD has been configured to support. */
-
- static void
- display_target_tables ()
- {
- int t, columns;
- extern bfd_target *bfd_target_vector[];
- char *colum;
- extern char *getenv ();
-
- columns = 0;
- colum = getenv ("COLUMNS");
- if (colum != NULL)
- columns = atoi (colum);
- if (columns == 0)
- columns = 80;
-
- t = 0;
- while (bfd_target_vector[t] != NULL)
- {
- int oldt = t, wid;
-
- wid = LONGEST_ARCH + strlen (bfd_target_vector[t]->name) + 1;
- ++t;
- while (wid < columns && bfd_target_vector[t] != NULL)
- {
- int newwid;
-
- newwid = wid + strlen (bfd_target_vector[t]->name) + 1;
- if (newwid >= columns)
- break;
- wid = newwid;
- ++t;
- }
- display_info_table (oldt, t);
- }
- }
-
- static void
- display_info ()
- {
- printf ("BFD header file version %s\n", BFD_VERSION);
- display_target_list ();
- display_target_tables ();
- }
-
- int
- main (argc, argv)
- int argc;
- char **argv;
- {
- int c;
- char *target = default_target;
- boolean seenflag = false;
-
- program_name = *argv;
- xmalloc_set_program_name (program_name);
-
- bfd_init ();
-
- while ((c = getopt_long (argc, argv, "ib:m:VdDlfahrRtTxsj:", long_options,
- (int *) 0))
- != EOF)
- {
- seenflag = true;
- switch (c)
- {
- case 0:
- break; /* we've been given a long option */
- case 'm':
- machine = optarg;
- break;
- case 'j':
- only = optarg;
- break;
- case 'l':
- with_line_numbers = 1;
- break;
- case 'b':
- target = optarg;
- break;
- case 'f':
- dump_file_header = true;
- break;
- case 'i':
- formats_info = true;
- break;
- case 'x':
- dump_symtab = 1;
- dump_reloc_info = 1;
- dump_file_header = true;
- dump_ar_hdrs = 1;
- dump_section_headers = 1;
- break;
- case 't':
- dump_symtab = 1;
- break;
- case 'T':
- dump_dynamic_symtab = 1;
- break;
- case 'd':
- disassemble = true;
- break;
- case 'D':
- disassemble = disassemble_all = true;
- break;
- case 's':
- dump_section_contents = 1;
- break;
- case 'r':
- dump_reloc_info = 1;
- break;
- case 'R':
- dump_dynamic_reloc_info = 1;
- break;
- case 'a':
- dump_ar_hdrs = 1;
- break;
- case 'h':
- dump_section_headers = 1;
- break;
- case 'H':
- usage (stdout, 0);
- case 'V':
- show_version = 1;
- break;
- default:
- usage (stderr, 1);
- }
- }
-
- if (show_version)
- {
- printf ("GNU %s version %s\n", program_name, program_version);
- exit (0);
- }
-
- if (seenflag == false)
- usage (stderr, 1);
-
- if (formats_info)
- {
- display_info ();
- }
- else
- {
- if (optind == argc)
- display_file ("a.out", target);
- else
- for (; optind < argc;)
- display_file (argv[optind++], target);
- }
- return 0;
- }
-