mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-29 15:00:34 +00:00
ae5d2ff573
all uses of get_symtab_upper_bound to bfd_get_symtab_upper_bound. Also: * coffgrok.c (symcount): Change to long. (do_sections_p1): Check for error return from bfd_get_reloc_upper_bound. Change relcount to long, and check for error from bfd_canonicalize_reloc. (coff_grok): Change storage to long. Check for error from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * nlmconv.c (main): Change symcount, newsymalloc, newsymcount, and i to long. Check for error from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. (copy_sections): Change reloc_size and reloc_count to long. Check for error from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. (mangle_relocs, i386_mangle_relocs, alpha_mangle_relocs): Change reloc_count_ptr argument to long *. Make corresponding changes to variables loaded from *reloc_count_ptr. * nm.c (display_rel_file): Change storage and symcount to long. Check for errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. * objcopy.c (filter_symbols): Change symcount, src_count and dst_count to long. (copy_object): Change symcount to long. Pass another argument to fprintf. Check for errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. (copy_section): Change relcount to long. Check for errors from bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. (mark_symbols_used_in_relocations): Change relcount and i to long. Check for errors form bfd_get_reloc_upper_bound and bfd_canonicalize_reloc. * objdump.c (storage): Remove global variable. (symcount): Changed to long. (slurp_symtab): New local variable storage. Check for errors from bfd_get_symtab_upper_bound and bfd_canonicalize_symtab. (remove_useless_symbols): Change return value and count to long. (objdump_print_address): Change min, max, thisplace and i to long. (disassemble_data): Change i to long. (dump_symbols): Change count to long. (dump_relocs): Change relcount to long. Check for errors from bfd_ret_reloc_upper_bound and bfd_canonicalize_reloc. (display_info_table): Add casts when passing LONGEST_ARCH for printf %* argument.
1440 lines
34 KiB
C
1440 lines
34 KiB
C
/* objdump.c -- dump information about an object file.
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Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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||
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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GNU General Public License for more details.
|
||
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||
You should have received a copy of the GNU General Public License
|
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along with this program; if not, write to the Free Software
|
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "getopt.h"
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#include "bucomm.h"
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#include <stdio.h>
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#include <ctype.h>
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#include "dis-asm.h"
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/* Internal headers for the ELF .stab-dump code - sorry. */
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#define BYTES_IN_WORD 32
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#include "aout/aout64.h"
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#include "elf/internal.h"
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extern Elf_Internal_Shdr *bfd_elf_find_section();
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#ifndef FPRINTF_ALREADY_DECLARED
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extern int fprintf PARAMS ((FILE *, CONST char *, ...));
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#endif
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char *default_target = NULL; /* default at runtime */
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extern char *program_version;
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int show_version = 0; /* show the version number */
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int dump_section_contents; /* -s */
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int dump_section_headers; /* -h */
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boolean dump_file_header; /* -f */
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int dump_symtab; /* -t */
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int dump_reloc_info; /* -r */
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int dump_ar_hdrs; /* -a */
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int with_line_numbers; /* -l */
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int dump_stab_section_info; /* --stabs */
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boolean disassemble; /* -d */
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boolean formats_info; /* -i */
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char *only; /* -j secname */
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/* Extra info to pass to the disassembler address printing function. */
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struct objdump_disasm_info {
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bfd *abfd;
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asection *sec;
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};
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/* Architecture to disassemble for, or default if NULL. */
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char *machine = (char *) NULL;
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/* The symbol table. */
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asymbol **syms;
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/* Number of symbols in `syms'. */
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long symcount = 0;
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/* Forward declarations. */
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static void
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display_file PARAMS ((char *filename, char *target));
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static void
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dump_data PARAMS ((bfd *abfd));
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static void
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dump_relocs PARAMS ((bfd *abfd));
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static void
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dump_symbols PARAMS ((bfd *abfd));
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static void
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display_bfd PARAMS ((bfd *abfd));
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static void
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objdump_print_address PARAMS ((bfd_vma, struct disassemble_info *));
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void
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usage (stream, status)
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FILE *stream;
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int status;
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{
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fprintf (stream, "\
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Usage: %s [-ahifdrtxsl] [-b bfdname] [-m machine] [-j section-name]\n\
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[--archive-headers] [--target=bfdname] [--disassemble] [--file-headers]\n\
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[--section-headers] [--headers] [--info] [--section=section-name]\n\
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[--line-numbers] [--architecture=machine] [--reloc] [--full-contents]\n\
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[--stabs] [--syms] [--all-headers] [--version] [--help] objfile...\n\
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at least one option besides -l (--line-numbers) must be given\n",
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program_name);
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exit (status);
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}
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static struct option long_options[]=
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{
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{"all-headers", no_argument, NULL, 'x'},
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{"architecture", required_argument, NULL, 'm'},
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{"archive-headers", no_argument, NULL, 'a'},
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{"disassemble", no_argument, NULL, 'd'},
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{"file-headers", no_argument, NULL, 'f'},
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{"full-contents", no_argument, NULL, 's'},
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{"headers", no_argument, NULL, 'h'},
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{"help", no_argument, NULL, 'H'},
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{"info", no_argument, NULL, 'i'},
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{"line-numbers", no_argument, NULL, 'l'},
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{"reloc", no_argument, NULL, 'r'},
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{"section", required_argument, NULL, 'j'},
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{"section-headers", no_argument, NULL, 'h'},
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{"stabs", no_argument, &dump_stab_section_info, 1},
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{"syms", no_argument, NULL, 't'},
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{"target", required_argument, NULL, 'b'},
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{"version", no_argument, &show_version, 1},
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{0, no_argument, 0, 0}
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};
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static void
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dump_section_header (abfd, section, ignored)
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bfd *abfd;
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asection *section;
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PTR ignored;
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{
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char *comma = "";
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#define PF(x,y) \
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if (section->flags & x) { printf("%s%s",comma,y); comma = ", "; }
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printf ("SECTION %d [%s]\t: size %08x",
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section->index,
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section->name,
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(unsigned) bfd_get_section_size_before_reloc (section));
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printf (" vma ");
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printf_vma (section->vma);
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printf (" align 2**%u\n ",
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section->alignment_power);
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PF (SEC_ALLOC, "ALLOC");
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PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
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PF (SEC_CONSTRUCTOR_TEXT, "CONSTRUCTOR TEXT");
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PF (SEC_CONSTRUCTOR_DATA, "CONSTRUCTOR DATA");
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PF (SEC_CONSTRUCTOR_BSS, "CONSTRUCTOR BSS");
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PF (SEC_LOAD, "LOAD");
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PF (SEC_RELOC, "RELOC");
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#ifdef SEC_BALIGN
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PF (SEC_BALIGN, "BALIGN");
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#endif
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PF (SEC_READONLY, "READONLY");
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PF (SEC_CODE, "CODE");
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PF (SEC_DATA, "DATA");
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PF (SEC_ROM, "ROM");
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PF (SEC_DEBUGGING, "DEBUGGING");
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printf ("\n");
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#undef PF
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}
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static void
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dump_headers (abfd)
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bfd *abfd;
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{
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bfd_map_over_sections (abfd, dump_section_header, (PTR) NULL);
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}
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static asymbol **
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slurp_symtab (abfd)
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bfd *abfd;
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{
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asymbol **sy = (asymbol **) NULL;
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long storage;
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if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
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{
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printf ("No symbols in \"%s\".\n", bfd_get_filename (abfd));
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return NULL;
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}
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storage = bfd_get_symtab_upper_bound (abfd);
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if (storage < 0)
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bfd_fatal (bfd_get_filename (abfd));
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if (storage)
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{
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sy = (asymbol **) xmalloc (storage);
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}
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symcount = bfd_canonicalize_symtab (abfd, sy);
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if (symcount < 0)
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bfd_fatal (bfd_get_filename (abfd));
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if (symcount == 0)
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{
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fprintf (stderr, "%s: %s: Invalid symbol table\n",
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program_name, bfd_get_filename (abfd));
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exit (1);
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}
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return sy;
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}
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/* Filter out (in place) symbols that are useless for disassembly.
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COUNT is the number of elements in SYMBOLS.
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Return the number of useful symbols. */
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long
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remove_useless_symbols (symbols, count)
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asymbol **symbols;
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long count;
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{
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register asymbol **in_ptr = symbols, **out_ptr = symbols;
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while (--count >= 0)
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{
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asymbol *sym = *in_ptr++;
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if (sym->name == NULL || sym->name[0] == '\0')
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continue;
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if (sym->flags & (BSF_DEBUGGING))
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continue;
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if (sym->section == &bfd_und_section
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|| bfd_is_com_section (sym->section))
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continue;
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*out_ptr++ = sym;
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}
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return out_ptr - symbols;
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}
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/* Sort symbols into value order. */
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static int
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compare_symbols (ap, bp)
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PTR ap;
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PTR bp;
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{
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asymbol *a = *(asymbol **)ap;
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asymbol *b = *(asymbol **)bp;
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if (a->value > b->value)
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return 1;
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else if (a->value < b->value)
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return -1;
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if (a->section > b->section)
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return 1;
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else if (a->section < b->section)
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return -1;
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return 0;
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}
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/* Print VMA symbolically to INFO if possible. */
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static void
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objdump_print_address (vma, info)
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bfd_vma vma;
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struct disassemble_info *info;
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{
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/* @@ For relocateable files, should filter out symbols belonging to
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the wrong section. Unfortunately, not enough information is supplied
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to this routine to determine the correct section in all cases. */
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/* @@ Would it speed things up to cache the last two symbols returned,
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and maybe their address ranges? For many processors, only one memory
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operand can be present at a time, so the 2-entry cache wouldn't be
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constantly churned by code doing heavy memory accesses. */
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/* Indices in `syms'. */
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long min = 0;
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long max = symcount;
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long thisplace;
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bfd_signed_vma vardiff;
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fprintf_vma (info->stream, vma);
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if (symcount < 1)
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return;
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/* Perform a binary search looking for the closest symbol to the
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required value. We are searching the range (min, max]. */
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while (min + 1 < max)
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{
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asymbol *sym;
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thisplace = (max + min) / 2;
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sym = syms[thisplace];
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vardiff = sym->value - vma;
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if (vardiff > 0)
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max = thisplace;
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else if (vardiff < 0)
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min = thisplace;
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else
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{
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min = thisplace;
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break;
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}
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}
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/* The symbol we want is now in min, the low end of the range we
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were searching. */
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thisplace = min;
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{
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/* If this symbol isn't global, search for one with the same value
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that is. */
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bfd_vma val = syms[thisplace]->value;
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long i;
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if (syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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for (i = thisplace - 1; i >= 0; i--)
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{
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if (syms[i]->value == val
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&& (!(syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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|| ((syms[thisplace]->flags & BSF_DEBUGGING)
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&& !(syms[i]->flags & BSF_DEBUGGING))))
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{
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thisplace = i;
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break;
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}
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}
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if (syms[thisplace]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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for (i = thisplace + 1; i < symcount; i++)
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{
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if (syms[i]->value == val
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&& (!(syms[i]->flags & (BSF_LOCAL|BSF_DEBUGGING))
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|| ((syms[thisplace]->flags & BSF_DEBUGGING)
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&& !(syms[i]->flags & BSF_DEBUGGING))))
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{
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thisplace = i;
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break;
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}
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}
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}
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{
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/* If the file is relocateable, and the symbol could be from this
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section, prefer a symbol from this section over symbols from
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others, even if the other symbol's value might be closer.
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Note that this may be wrong for some symbol references if the
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sections have overlapping memory ranges, but in that case there's
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no way to tell what's desired without looking at the relocation
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table. */
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struct objdump_disasm_info *aux;
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long i;
|
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aux = (struct objdump_disasm_info *) info->application_data;
|
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if ((aux->abfd->flags & HAS_RELOC)
|
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&& vma >= bfd_get_section_vma (aux->abfd, aux->sec)
|
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&& vma < (bfd_get_section_vma (aux->abfd, aux->sec)
|
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+ bfd_get_section_size_before_reloc (aux->sec))
|
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&& syms[thisplace]->section != aux->sec)
|
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{
|
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for (i = thisplace + 1; i < symcount; i++)
|
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{
|
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if (syms[i]->value != syms[thisplace]->value)
|
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{
|
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i--;
|
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break;
|
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}
|
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}
|
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for (; i >= 0; i--)
|
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{
|
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if (syms[i]->section == aux->sec)
|
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{
|
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thisplace = i;
|
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break;
|
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}
|
||
}
|
||
}
|
||
}
|
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fprintf (info->stream, " <%s", syms[thisplace]->name);
|
||
if (syms[thisplace]->value > vma)
|
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{
|
||
char buf[30], *p = buf;
|
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sprintf_vma (buf, syms[thisplace]->value - vma);
|
||
while (*p == '0')
|
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p++;
|
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fprintf (info->stream, "-%s", p);
|
||
}
|
||
else if (vma > syms[thisplace]->value)
|
||
{
|
||
char buf[30], *p = buf;
|
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sprintf_vma (buf, vma - syms[thisplace]->value);
|
||
while (*p == '0')
|
||
p++;
|
||
fprintf (info->stream, "+%s", p);
|
||
}
|
||
fprintf (info->stream, ">");
|
||
}
|
||
|
||
#ifdef ARCH_all
|
||
#define ARCH_a29k
|
||
#define ARCH_alpha
|
||
#define ARCH_h8300
|
||
#define ARCH_h8500
|
||
#define ARCH_hppa
|
||
#define ARCH_i386
|
||
#define ARCH_i960
|
||
#define ARCH_m68k
|
||
#define ARCH_m88k
|
||
#define ARCH_mips
|
||
#define ARCH_powerpc
|
||
#define ARCH_rs6000
|
||
#define ARCH_sh
|
||
#define ARCH_sparc
|
||
#define ARCH_z8k
|
||
#endif
|
||
|
||
void
|
||
disassemble_data (abfd)
|
||
bfd *abfd;
|
||
{
|
||
long i;
|
||
unsigned int (*print) () = 0; /* Old style */
|
||
disassembler_ftype disassemble = 0; /* New style */
|
||
struct disassemble_info disasm_info;
|
||
struct objdump_disasm_info aux;
|
||
|
||
int prevline;
|
||
CONST char *prev_function = "";
|
||
|
||
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;
|
||
}
|
||
|
||
symcount = remove_useless_symbols (syms, symcount);
|
||
|
||
/* Sort the symbols into section and symbol order */
|
||
qsort (syms, 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
|
||
{
|
||
enum bfd_architecture a = bfd_get_arch (abfd);
|
||
switch (a)
|
||
{
|
||
/* If you add a case to this table, also add it to the
|
||
ARCH_all definition right above this function. */
|
||
#ifdef ARCH_a29k
|
||
case bfd_arch_a29k:
|
||
/* As far as I know we only handle big-endian 29k objects. */
|
||
disassemble = print_insn_big_a29k;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_alpha
|
||
case bfd_arch_alpha:
|
||
disassemble = print_insn_alpha;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_h8300
|
||
case bfd_arch_h8300:
|
||
if (bfd_get_mach(abfd) == bfd_mach_h8300h)
|
||
disassemble = print_insn_h8300h;
|
||
else
|
||
disassemble = print_insn_h8300;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_h8500
|
||
case bfd_arch_h8500:
|
||
disassemble = print_insn_h8500;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_hppa
|
||
case bfd_arch_hppa:
|
||
disassemble = print_insn_hppa;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_i386
|
||
case bfd_arch_i386:
|
||
disassemble = print_insn_i386;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_i960
|
||
case bfd_arch_i960:
|
||
disassemble = print_insn_i960;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_m68k
|
||
case bfd_arch_m68k:
|
||
disassemble = print_insn_m68k;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_m88k
|
||
case bfd_arch_m88k:
|
||
disassemble = print_insn_m88k;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_mips
|
||
case bfd_arch_mips:
|
||
if (abfd->xvec->byteorder_big_p)
|
||
disassemble = print_insn_big_mips;
|
||
else
|
||
disassemble = print_insn_little_mips;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_powerpc
|
||
case bfd_arch_powerpc:
|
||
if (abfd->xvec->byteorder_big_p)
|
||
disassemble = print_insn_big_powerpc;
|
||
else
|
||
disassemble = print_insn_little_powerpc;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_rs6000
|
||
case bfd_arch_rs6000:
|
||
disassemble = print_insn_rs6000;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_sh
|
||
case bfd_arch_sh:
|
||
disassemble = print_insn_sh;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_sparc
|
||
case bfd_arch_sparc:
|
||
disassemble = print_insn_sparc;
|
||
break;
|
||
#endif
|
||
#ifdef ARCH_z8k
|
||
case bfd_arch_z8k:
|
||
if (bfd_get_mach(abfd) == bfd_mach_z8001)
|
||
disassemble = print_insn_z8001;
|
||
else
|
||
disassemble = print_insn_z8002;
|
||
break;
|
||
#endif
|
||
default:
|
||
fprintf (stderr, "%s: Can't disassemble for architecture %s\n",
|
||
program_name,
|
||
bfd_printable_arch_mach (a, 0));
|
||
exit (1);
|
||
}
|
||
|
||
}
|
||
|
||
for (section = abfd->sections;
|
||
section != (asection *) NULL;
|
||
section = section->next)
|
||
{
|
||
bfd_byte *data = NULL;
|
||
bfd_size_type datasize = 0;
|
||
|
||
if (!(section->flags & SEC_LOAD))
|
||
continue;
|
||
if (only != (char *) NULL && strcmp (only, section->name) != 0)
|
||
continue;
|
||
|
||
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)
|
||
{
|
||
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;
|
||
}
|
||
i += 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
|
||
&& strcmp(functionname, prev_function))
|
||
{
|
||
printf ("%s():\n", functionname);
|
||
prev_function = functionname;
|
||
}
|
||
if (!filename)
|
||
filename = "???";
|
||
if (line && line != prevline)
|
||
{
|
||
printf ("%s:%u\n", filename, line);
|
||
prevline = line;
|
||
}
|
||
}
|
||
}
|
||
objdump_print_address (section->vma + i, &disasm_info);
|
||
putchar (' ');
|
||
|
||
if (disassemble) /* New style */
|
||
{
|
||
int bytes = (*disassemble)(section->vma + i,
|
||
&disasm_info);
|
||
if (bytes < 0)
|
||
break;
|
||
i += bytes;
|
||
}
|
||
else /* Old style */
|
||
i += print (section->vma + i,
|
||
data + i,
|
||
stdout);
|
||
putchar ('\n');
|
||
}
|
||
}
|
||
free (data);
|
||
}
|
||
}
|
||
|
||
|
||
/* 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;
|
||
{
|
||
Elf_Internal_Shdr *stab_hdr, *stabstr_hdr;
|
||
asection *stabsect, *stabstrsect;
|
||
int is_elf = (0 == strncmp ("elf", abfd->xvec->name, 3));
|
||
|
||
if (is_elf)
|
||
stab_hdr = bfd_elf_find_section (abfd, stabsect_name);
|
||
else
|
||
stabsect = bfd_get_section_by_name (abfd, stabsect_name);
|
||
|
||
if (is_elf ? (0 == stab_hdr) : (0 == stabsect))
|
||
{
|
||
printf ("No %s section present\n\n", stabsect_name);
|
||
return false;
|
||
}
|
||
|
||
if (is_elf)
|
||
stabstr_hdr = bfd_elf_find_section (abfd, strsect_name);
|
||
else
|
||
stabstrsect = bfd_get_section_by_name (abfd, strsect_name);
|
||
|
||
if (is_elf ? (0 == stabstr_hdr) : (0 == stabstrsect))
|
||
{
|
||
fprintf (stderr, "%s: %s has no %s section\n", program_name,
|
||
bfd_get_filename (abfd), strsect_name);
|
||
return false;
|
||
}
|
||
|
||
stab_size = (is_elf ? stab_hdr ->sh_size : bfd_section_size (abfd, stabsect));
|
||
stabstr_size = (is_elf ? stabstr_hdr->sh_size : bfd_section_size (abfd, stabstrsect));
|
||
|
||
stabs = (struct internal_nlist *) xmalloc (stab_size);
|
||
strtab = (char *) xmalloc (stabstr_size);
|
||
|
||
if (is_elf)
|
||
{
|
||
if (bfd_seek (abfd, stab_hdr->sh_offset, SEEK_SET) < 0 ||
|
||
stab_size != bfd_read ((PTR) stabs, stab_size, 1, abfd))
|
||
{
|
||
fprintf (stderr, "%s: Reading %s section of %s failed\n",
|
||
program_name, stabsect_name,
|
||
bfd_get_filename (abfd));
|
||
free (stabs);
|
||
free (strtab);
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
bfd_get_section_contents (abfd, stabsect, (PTR) stabs, 0, stab_size);
|
||
}
|
||
|
||
if (is_elf)
|
||
{
|
||
if (bfd_seek (abfd, stabstr_hdr->sh_offset, SEEK_SET) < 0 ||
|
||
stabstr_size != bfd_read ((PTR) strtab, stabstr_size, 1, abfd))
|
||
{
|
||
fprintf (stderr, "%s: Reading %s section of %s failed\n",
|
||
program_name, strsect_name,
|
||
bfd_get_filename (abfd));
|
||
free (stabs);
|
||
free (strtab);
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
bfd_get_section_contents (abfd, stabstrsect, (PTR) strtab, 0, stabstr_size);
|
||
}
|
||
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
|
||
printf ("%-6d", i);
|
||
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_symtab)
|
||
dump_symbols (abfd);
|
||
if (dump_stab_section_info)
|
||
dump_stabs (abfd);
|
||
if (dump_reloc_info)
|
||
dump_relocs (abfd);
|
||
if (dump_section_contents)
|
||
dump_data (abfd);
|
||
/* Note that disassemble_data re-orders the syms table, but that is
|
||
safe - as long as it is done last! */
|
||
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)
|
||
bfd *abfd;
|
||
{
|
||
long count;
|
||
asymbol **current = syms;
|
||
|
||
printf ("SYMBOL TABLE:\n");
|
||
|
||
for (count = 0; count < symcount; 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 (a == &bfd_abs_section)
|
||
continue;
|
||
if (a == &bfd_und_section)
|
||
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
|
||
{
|
||
arelent **p;
|
||
|
||
relpp = (arelent **) xmalloc (relsize);
|
||
/* Note that this must be done *before* we sort the syms table. */
|
||
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");
|
||
/* 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");
|
||
}
|
||
printf ("\n\n");
|
||
free (relpp);
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
/* A file to open each BFD on. It will never actually be written to. */
|
||
#ifdef unix
|
||
#define _DUMMY_NAME_ "/dev/null"
|
||
#else
|
||
#define _DUMMY_NAME_ "##dummy"
|
||
#endif
|
||
|
||
/* 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 bfd_target *bfd_target_vector[];
|
||
int t;
|
||
|
||
for (t = 0; bfd_target_vector[t]; t++)
|
||
{
|
||
int a;
|
||
bfd_target *p = bfd_target_vector[t];
|
||
bfd *abfd = bfd_openw (_DUMMY_NAME_, p->name);
|
||
|
||
/* It *is* possible that bfd_openw might fail; avoid the
|
||
tragic consequences that would otherwise ensue. */
|
||
if (abfd == NULL)
|
||
{
|
||
bfd_nonfatal (_DUMMY_NAME_);
|
||
return;
|
||
}
|
||
bfd_set_format (abfd, bfd_object);
|
||
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");
|
||
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));
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
{
|
||
int t, a;
|
||
extern bfd_target *bfd_target_vector[];
|
||
|
||
/* Print heading of target names. */
|
||
printf ("\n%*s", (int) LONGEST_ARCH, " ");
|
||
for (t = first; t++ < last && bfd_target_vector[t];)
|
||
printf ("%s ", bfd_target_vector[t]->name);
|
||
putchar ('\n');
|
||
|
||
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];)
|
||
{
|
||
bfd_target *p = bfd_target_vector[t];
|
||
bfd *abfd = bfd_openw (_DUMMY_NAME_, p->name);
|
||
|
||
/* Just in case the open failed somehow. */
|
||
if (abfd == NULL)
|
||
{
|
||
bfd_nonfatal (_DUMMY_NAME_);
|
||
return;
|
||
}
|
||
bfd_set_format (abfd, bfd_object);
|
||
if (bfd_set_arch_mach (abfd, a, 0))
|
||
printf ("%s ", p->name);
|
||
else
|
||
{
|
||
int l = strlen (p->name);
|
||
while (l--)
|
||
putchar ('-');
|
||
putchar (' ');
|
||
}
|
||
}
|
||
putchar ('\n');
|
||
}
|
||
}
|
||
|
||
/* 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;
|
||
|
||
for (t = 0; bfd_target_vector[t];)
|
||
{
|
||
int oldt = t, wid;
|
||
|
||
for (wid = LONGEST_ARCH; bfd_target_vector[t] && wid < columns; t++)
|
||
wid += strlen (bfd_target_vector[t]->name) + 1;
|
||
t--;
|
||
if (oldt == t)
|
||
break;
|
||
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:Vdlfahrtxsj:", 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 'd':
|
||
disassemble = true;
|
||
break;
|
||
case 's':
|
||
dump_section_contents = 1;
|
||
break;
|
||
case 'r':
|
||
dump_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;
|
||
}
|