diff options
Diffstat (limited to 'binutils/objcopy.c')
| -rw-r--r-- | binutils/objcopy.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/binutils/objcopy.c b/binutils/objcopy.c index 14f6b96..9a6bb72 100644 --- a/binutils/objcopy.c +++ b/binutils/objcopy.c @@ -186,6 +186,9 @@ struct section_add /* List of sections to add to the output BFD. */ static struct section_add *add_sections; +/* List of sections to dump from the output BFD. */ +static struct section_add *dump_sections; + /* If non-NULL the argument to --add-gnu-debuglink. This should be the filename to store in the .gnu_debuglink section. */ static const char * gnu_debuglink_filename = NULL; @@ -259,6 +262,7 @@ static enum long_section_name_handling long_section_names = KEEP; enum command_line_switch { OPTION_ADD_SECTION=150, + OPTION_DUMP_SECTION, OPTION_CHANGE_ADDRESSES, OPTION_CHANGE_LEADING_CHAR, OPTION_CHANGE_START, @@ -377,6 +381,7 @@ static struct option copy_options[] = {"disable-deterministic-archives", no_argument, 0, 'U'}, {"discard-all", no_argument, 0, 'x'}, {"discard-locals", no_argument, 0, 'X'}, + {"dump-section", required_argument, 0, OPTION_DUMP_SECTION}, {"enable-deterministic-archives", no_argument, 0, 'D'}, {"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO}, {"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL}, @@ -548,6 +553,7 @@ copy_usage (FILE *stream, int exit_status) --set-section-flags <name>=<flags>\n\ Set section <name>'s properties to <flags>\n\ --add-section <name>=<file> Add section <name> found in <file> to output\n\ + --dump-section <name>=<file> Dump the contents of section <name> into <file>\n\ --rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\ --long-section-names {enable|disable|keep}\n\ Handle long section names in Coff objects.\n\ @@ -1826,6 +1832,59 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch) } } + if (dump_sections != NULL) + { + struct section_add * pdump; + + for (pdump = dump_sections; pdump != NULL; pdump = pdump->next) + { + asection * sec; + + sec = bfd_get_section_by_name (ibfd, pdump->name); + if (sec == NULL) + { + bfd_nonfatal_message (NULL, ibfd, NULL, + _("can't dump section '%s' - it does not exist"), + pdump->name); + continue; + } + + if ((bfd_get_section_flags (ibfd, sec) & SEC_HAS_CONTENTS) == 0) + { + bfd_nonfatal_message (NULL, ibfd, sec, + _("can't dump section - it has no contents")); + continue; + } + + bfd_size_type size = bfd_get_section_size (sec); + if (size == 0) + { + bfd_nonfatal_message (NULL, ibfd, sec, + _("can't dump section - it is empty")); + continue; + } + + FILE * f; + f = fopen (pdump->filename, FOPEN_WB); + if (f == NULL) + { + bfd_nonfatal_message (pdump->filename, NULL, NULL, + _("could not open section dump file")); + continue; + } + + bfd_byte * contents = xmalloc (size); + if (bfd_get_section_contents (ibfd, sec, contents, 0, size)) + fwrite (contents, 1, size, f); + else + bfd_nonfatal_message (NULL, ibfd, sec, + _("could not retrieve section contents")); + + fclose (f); + free (contents); + } + } + if (gnu_debuglink_filename != NULL) { /* PR 15125: Give a helpful warning message if @@ -3653,6 +3712,25 @@ copy_main (int argc, char *argv[]) } break; + case OPTION_DUMP_SECTION: + { + const char *s; + struct section_add *pa; + + s = strchr (optarg, '='); + + if (s == NULL) + fatal (_("bad format for %s"), "--dump-section"); + + pa = (struct section_add *) xmalloc (sizeof * pa); + pa->name = xstrndup (optarg, s - optarg); + pa->filename = s + 1; + pa->next = dump_sections; + pa->contents = NULL; + dump_sections = pa; + } + break; + case OPTION_CHANGE_START: change_start = parse_vma (optarg, "--change-start"); break; |