diff options
Diffstat (limited to 'binutils')
| -rw-r--r-- | binutils/NEWS | 3 | ||||
| -rw-r--r-- | binutils/doc/binutils.texi | 10 | ||||
| -rw-r--r-- | binutils/objcopy.c | 33 |
3 files changed, 44 insertions, 2 deletions
diff --git a/binutils/NEWS b/binutils/NEWS index 00ef7c4..3aea875 100644 --- a/binutils/NEWS +++ b/binutils/NEWS @@ -14,6 +14,9 @@ sframe_get_funcdesc_with_addr API, change in the behavior of sframe_fre_get_ra_offset and sframe_fre_get_fp_offset APIs. +* Add command-line option, --strip-section-headers, to objcopy and strip to + remove ELF section header from ELF file. + Changes in 2.40: * Objdump has a new command line option --show-all-symbols which will make it diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi index 8c14d11..8314cb5 100644 --- a/binutils/doc/binutils.texi +++ b/binutils/doc/binutils.texi @@ -1278,6 +1278,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}] [@option{-R} @var{sectionpattern}|@option{--remove-section=}@var{sectionpattern}] [@option{--keep-section=}@var{sectionpattern}] [@option{--remove-relocations=}@var{sectionpattern}] + [@option{--strip-section-headers}] [@option{-p}|@option{--preserve-dates}] [@option{-D}|@option{--enable-deterministic-archives}] [@option{-U}|@option{--disable-deterministic-archives}] @@ -1494,6 +1495,10 @@ will remove all relocations for sections matching the pattern '.text.*', but will not remove relocations for the section '.text.foo'. +@item --strip-section-headers +Strip section header This option is specific to ELF files. +Implies @option{--strip-all} and @option{--merge-notes}. + @item -S @itemx --strip-all Do not copy relocation and symbol information from the source file. @@ -3484,6 +3489,7 @@ strip [@option{-F} @var{bfdname} |@option{--target=}@var{bfdname}] [@option{-R} @var{sectionname} |@option{--remove-section=}@var{sectionname}] [@option{--keep-section=}@var{sectionpattern}] [@option{--remove-relocations=}@var{sectionpattern}] + [@option{--strip-section-headers}] [@option{-o} @var{file}] [@option{-p}|@option{--preserve-dates}] [@option{-D}|@option{--enable-deterministic-archives}] [@option{-U}|@option{--disable-deterministic-archives}] @@ -3586,6 +3592,10 @@ will remove all relocations for sections matching the pattern '.text.*', but will not remove relocations for the section '.text.foo'. +@item --strip-section-headers +Strip section headers. This option is specific to ELF files. Implies +@option{--strip-all} and @option{--merge-notes}. + @item -s @itemx --strip-all Remove all symbols. diff --git a/binutils/objcopy.c b/binutils/objcopy.c index 4140077..206d80b 100644 --- a/binutils/objcopy.c +++ b/binutils/objcopy.c @@ -97,6 +97,7 @@ static int deterministic = -1; /* Enable deterministic archives. */ static int status = 0; /* Exit status. */ static bool merge_notes = false; /* Merge note sections. */ +static bool strip_section_headers = false;/* Strip section headers. */ typedef struct merged_note_section { @@ -365,6 +366,7 @@ enum command_line_switch OPTION_SREC_LEN, OPTION_STACK, OPTION_STRIP_DWO, + OPTION_STRIP_SECTION_HEADERS, OPTION_STRIP_SYMBOLS, OPTION_STRIP_UNNEEDED, OPTION_STRIP_UNNEEDED_SYMBOL, @@ -403,6 +405,7 @@ static struct option strip_options[] = {"preserve-dates", no_argument, 0, 'p'}, {"remove-section", required_argument, 0, 'R'}, {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS}, + {"strip-section-headers", no_argument, 0, OPTION_STRIP_SECTION_HEADERS}, {"strip-all", no_argument, 0, 's'}, {"strip-debug", no_argument, 0, 'S'}, {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO}, @@ -492,6 +495,7 @@ static struct option copy_options[] = {"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR}, {"remove-section", required_argument, 0, 'R'}, {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS}, + {"strip-section-headers", no_argument, 0, OPTION_STRIP_SECTION_HEADERS}, {"rename-section", required_argument, 0, OPTION_RENAME_SECTION}, {"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES}, {"section-alignment", required_argument, 0, OPTION_PE_SECTION_ALIGNMENT}, @@ -592,6 +596,7 @@ copy_usage (FILE *stream, int exit_status) --add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\ -R --remove-section <name> Remove section <name> from the output\n\ --remove-relocations <name> Remove relocations from section <name>\n\ + --strip-section-headers Strip section header from the output\n\ -S --strip-all Remove all symbol and relocation information\n\ -g --strip-debug Remove all debugging symbols & sections\n\ --strip-dwo Remove all DWO sections\n\ @@ -730,6 +735,7 @@ strip_usage (FILE *stream, int exit_status) fprintf (stream, _("\ -R --remove-section=<name> Also remove section <name> from the output\n\ --remove-relocations <name> Remove relocations from section <name>\n\ + --strip-section-headers Strip section headers from the output\n\ -s --strip-all Remove all symbol and relocation information\n\ -g -S -d --strip-debug Remove all debugging symbols & sections\n\ --strip-dwo Remove all DWO sections\n\ @@ -2695,7 +2701,16 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch) necessary. */ VerilogDataEndianness = ibfd->xvec->byteorder; - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) + if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour) + { + if (strip_section_headers) + { + ibfd->flags |= BFD_NO_SECTION_HEADER; + strip_symbols = STRIP_ALL; + merge_notes = true; + } + } + else { if ((do_debug_sections & compress) != 0 && do_debug_sections != compress) @@ -2712,6 +2727,13 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch) bfd_get_archive_filename (ibfd)); return false; } + + if (strip_section_headers) + { + non_fatal (_("--strip_section_headers is unsupported on `%s'"), + bfd_get_archive_filename (ibfd)); + return false; + } } if (verbose) @@ -3456,7 +3478,7 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch) free (merged); } } - else if (merge_notes && ! is_strip) + else if (merge_notes && ! is_strip && ! strip_section_headers) non_fatal (_("%s: Could not find any mergeable note sections"), bfd_get_filename (ibfd)); @@ -4759,6 +4781,9 @@ strip_main (int argc, char *argv[]) case OPTION_REMOVE_RELOCS: handle_remove_relocations_option (optarg); break; + case OPTION_STRIP_SECTION_HEADERS: + strip_section_headers = true; + break; case 's': strip_symbols = STRIP_ALL; break; @@ -5228,6 +5253,10 @@ copy_main (int argc, char *argv[]) handle_remove_relocations_option (optarg); break; + case OPTION_STRIP_SECTION_HEADERS: + strip_section_headers = true; + break; + case 'S': strip_symbols = STRIP_ALL; break; |