/* objcopy.c -- copy object file from input to output, optionally massaging it.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
This file is part of GNU Binutils.
#include "filenames.h"
#include "fnmatch.h"
#include "elf-bfd.h"
-#include <sys/stat.h>
#include "libbfd.h"
#include "coff/internal.h"
#include "libcoff.h"
static bfd_boolean verbose; /* Print file and target names. */
static bfd_boolean preserve_dates; /* Preserve input file timestamp. */
+static bfd_boolean deterministic; /* Enable deterministic archives. */
static int status = 0; /* Exit status. */
enum strip_action
STRIP_DEBUG, /* Strip all debugger symbols. */
STRIP_UNNEEDED, /* Strip unnecessary symbols. */
STRIP_NONDEBUG, /* Strip everything but debug info. */
+ STRIP_DWO, /* Strip all DWO info. */
+ STRIP_NONDWO, /* Strip everything but DWO info. */
STRIP_ALL /* Strip all symbols. */
};
OPTION_SECTION_ALIGNMENT,
OPTION_STACK,
OPTION_INTERLEAVE_WIDTH,
- OPTION_SUBSYSTEM
+ OPTION_SUBSYSTEM,
+ OPTION_EXTRACT_DWO,
+ OPTION_STRIP_DWO
};
/* Options to handle if running as "strip". */
{
{"discard-all", no_argument, 0, 'x'},
{"discard-locals", no_argument, 0, 'X'},
+ {"enable-deterministic-archives", no_argument, 0, 'D'},
{"format", required_argument, 0, 'F'}, /* Obsolete */
{"help", no_argument, 0, 'h'},
{"info", no_argument, 0, OPTION_FORMATS_INFO},
{"remove-section", required_argument, 0, 'R'},
{"strip-all", no_argument, 0, 's'},
{"strip-debug", no_argument, 0, 'S'},
+ {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
{"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
{"strip-symbol", required_argument, 0, 'N'},
{"target", required_argument, 0, 'F'},
{"decompress-debug-sections", no_argument, 0, OPTION_DECOMPRESS_DEBUG_SECTIONS},
{"discard-all", no_argument, 0, 'x'},
{"discard-locals", no_argument, 0, 'X'},
+ {"enable-deterministic-archives", no_argument, 0, 'D'},
+ {"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO},
{"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
{"format", required_argument, 0, 'F'}, /* Obsolete */
{"gap-fill", required_argument, 0, OPTION_GAP_FILL},
{"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
{"strip-all", no_argument, 0, 'S'},
{"strip-debug", no_argument, 0, 'g'},
+ {"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
{"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
{"strip-unneeded-symbol", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOL},
{"strip-unneeded-symbols", required_argument, 0, OPTION_STRIP_UNNEEDED_SYMBOLS},
/* Forward declarations. */
static void setup_section (bfd *, asection *, void *);
static void setup_bfd_headers (bfd *, bfd *);
+static void copy_relocations_in_section (bfd *, asection *, void *);
static void copy_section (bfd *, asection *, void *);
static void get_sections (bfd *, asection *, void *);
static int compare_section_lma (const void *, const void *);
-F --target <bfdname> Set both input and output format to <bfdname>\n\
--debugging Convert debugging information, if possible\n\
-p --preserve-dates Copy modified/access timestamps to the output\n\
+ -D --enable-deterministic-archives\n\
+ Produce deterministic output when stripping archives\n\
-j --only-section <name> Only copy section <name> into the output\n\
--add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
-R --remove-section <name> Remove section <name> 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\
--strip-unneeded Remove all symbols not needed by relocations\n\
-N --strip-symbol <name> Do not copy symbol <name>\n\
--strip-unneeded-symbol <name>\n\
Do not copy symbol <name> unless needed by\n\
relocations\n\
--only-keep-debug Strip everything but the debug information\n\
+ --extract-dwo Copy only DWO sections\n\
--extract-symbol Remove section contents but keep symbols\n\
-K --keep-symbol <name> Do not strip symbol <name>\n\
--keep-file-symbols Do not strip file symbol(s)\n\
-O --output-target=<bfdname> Create an output file in format <bfdname>\n\
-F --target=<bfdname> Set both input and output format to <bfdname>\n\
-p --preserve-dates Copy modified/access timestamps to the output\n\
+ -D --enable-deterministic-archives\n\
+ Produce deterministic output when stripping archives\n\
-R --remove-section=<name> Remove section <name> 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\
--strip-unneeded Remove all symbols not needed by relocations\n\
--only-keep-debug Strip everything but the debug information\n\
-N --strip-symbol=<name> Do not copy symbol <name>\n\
return NULL;
}
-/* See if a section is being removed. */
+/* Return TRUE if the section is a DWO section. */
static bfd_boolean
-is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+is_dwo_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+{
+ const char *name = bfd_get_section_name (abfd, sec);
+ int len = strlen (name);
+
+ return strncmp (name + len - 4, ".dwo", 4) == 0;
+}
+
+/* See if a non-group section is being removed. */
+
+static bfd_boolean
+is_strip_section_1 (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
{
if (sections_removed || sections_copied)
{
|| convert_debugging)
return TRUE;
+ if (strip_symbols == STRIP_DWO)
+ return is_dwo_section (abfd, sec);
+
if (strip_symbols == STRIP_NONDEBUG)
return FALSE;
}
+ if (strip_symbols == STRIP_NONDWO)
+ return !is_dwo_section (abfd, sec);
+
+ return FALSE;
+}
+
+/* See if a section is being removed. */
+
+static bfd_boolean
+is_strip_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+{
+ if (is_strip_section_1 (abfd, sec))
+ return TRUE;
+
if ((bfd_get_section_flags (abfd, sec) & SEC_GROUP) != 0)
{
asymbol *gsym;
const char *gname;
+ asection *elt, *first;
/* PR binutils/3181
If we are going to strip the group signature symbol, then
&& !is_specified_symbol (gname, keep_specific_htab))
|| is_specified_symbol (gname, strip_specific_htab))
return TRUE;
+
+ /* Remove the group section if all members are removed. */
+ first = elt = elf_next_in_group (sec);
+ while (elt != NULL)
+ {
+ if (!is_strip_section_1 (abfd, elt))
+ return FALSE;
+ elt = elf_next_in_group (elt);
+ if (elt == first)
+ break;
+ }
+
+ return TRUE;
}
return FALSE;
ncopied += tocopy;
}
- chmod (bfd_get_filename (obfd), buf.st_mode);
+ /* We should at least to be able to read it back when copying an
+ unknown object in an archive. */
+ chmod (bfd_get_filename (obfd), buf.st_mode | S_IRUSR);
free (cbuf);
return TRUE;
}
|| strip_symbols == STRIP_ALL
|| strip_symbols == STRIP_UNNEEDED
|| strip_symbols == STRIP_NONDEBUG
+ || strip_symbols == STRIP_DWO
+ || strip_symbols == STRIP_NONDWO
|| discard_locals != LOCALS_UNDEF
|| localize_hidden
|| htab_elements (strip_specific_htab) != 0
bfd_set_symtab (obfd, osympp, symcount);
+ /* This has to happen before section positions are set. */
+ bfd_map_over_sections (ibfd, copy_relocations_in_section, obfd);
+
/* This has to happen after the symbol table has been set. */
bfd_map_over_sections (ibfd, copy_section, obfd);
fatal (_("cannot create tempdir for archive copying (error: %s)"),
strerror (errno));
- obfd->has_armap = ibfd->has_armap;
+ if (strip_symbols == STRIP_ALL)
+ obfd->has_armap = FALSE;
+ else
+ obfd->has_armap = ibfd->has_armap;
obfd->is_thin_archive = ibfd->is_thin_archive;
+ if (deterministic)
+ obfd->flags |= BFD_DETERMINISTIC_OUTPUT;
+
list = NULL;
this_element = bfd_openr_next_archived_file (ibfd, NULL);
struct stat buf;
int stat_status = 0;
bfd_boolean del = TRUE;
+ bfd_boolean ok_object;
/* Create an output file for this member. */
output_name = concat (dir, "/",
l->obfd = NULL;
list = l;
- if (bfd_check_format (this_element, bfd_object))
+ ok_object = bfd_check_format (this_element, bfd_object);
+ if (!ok_object)
+ bfd_nonfatal_message (NULL, this_element, NULL,
+ _("Unable to recognise the format of file"));
+
+ /* PR binutils/3110: Cope with archives
+ containing multiple target types. */
+ if (force_output_target || !ok_object)
+ output_bfd = bfd_openw (output_name, output_target);
+ else
+ output_bfd = bfd_openw (output_name, bfd_get_target (this_element));
+
+ if (output_bfd == NULL)
{
- /* PR binutils/3110: Cope with archives
- containing multiple target types. */
- if (force_output_target)
- output_bfd = bfd_openw (output_name, output_target);
- else
- output_bfd = bfd_openw (output_name, bfd_get_target (this_element));
+ bfd_nonfatal_message (output_name, NULL, NULL, NULL);
+ status = 1;
+ return;
+ }
+
+ if (ok_object)
+ {
+ del = !copy_object (this_element, output_bfd, input_arch);
- if (output_bfd == NULL)
+ if (del && bfd_get_arch (this_element) == bfd_arch_unknown)
+ /* Try again as an unknown object file. */
+ ok_object = FALSE;
+ else if (!bfd_close (output_bfd))
{
bfd_nonfatal_message (output_name, NULL, NULL, NULL);
+ /* Error in new object file. Don't change archive. */
status = 1;
- return;
}
-
- del = ! copy_object (this_element, output_bfd, input_arch);
-
- if (! del
- || bfd_get_arch (this_element) != bfd_arch_unknown)
- {
- if (!bfd_close (output_bfd))
- {
- bfd_nonfatal_message (output_name, NULL, NULL, NULL);
- /* Error in new object file. Don't change archive. */
- status = 1;
- }
- }
- else
- goto copy_unknown_element;
}
- else
- {
- bfd_nonfatal_message (NULL, this_element, NULL,
- _("Unable to recognise the format of file"));
- output_bfd = bfd_openw (output_name, output_target);
-copy_unknown_element:
+ if (!ok_object)
+ {
del = !copy_unknown_object (this_element, output_bfd);
if (!bfd_close_all_done (output_bfd))
{
bfd_nonfatal_message (NULL, obfd, osection, err);
}
-/* Copy the data of input section ISECTION of IBFD
- to an output section with the same name in OBFD.
- If stripping then don't copy any relocation info. */
+/* Return TRUE if input section ISECTION should be skipped. */
-static void
-copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
+static bfd_boolean
+skip_section (bfd *ibfd, sec_ptr isection)
{
- bfd *obfd = (bfd *) obfdarg;
- struct section_list *p;
- arelent **relpp;
- long relcount;
sec_ptr osection;
bfd_size_type size;
- long relsize;
flagword flags;
/* If we have already failed earlier on,
do not keep on generating complaints now. */
if (status != 0)
- return;
+ return TRUE;
+
+ if (extract_symbol)
+ return TRUE;
if (is_strip_section (ibfd, isection))
- return;
+ return TRUE;
flags = bfd_get_section_flags (ibfd, isection);
if ((flags & SEC_GROUP) != 0)
- return;
+ return TRUE;
osection = isection->output_section;
size = bfd_get_section_size (isection);
if (size == 0 || osection == 0)
- return;
+ return TRUE;
- if (extract_symbol)
+ return FALSE;
+}
+
+/* Copy relocations in input section ISECTION of IBFD to an output
+ section with the same name in OBFDARG. If stripping then don't
+ copy any relocation info. */
+
+static void
+copy_relocations_in_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
+{
+ bfd *obfd = (bfd *) obfdarg;
+ long relsize;
+ arelent **relpp;
+ long relcount;
+ sec_ptr osection;
+
+ if (skip_section (ibfd, isection))
return;
- p = find_section_list (bfd_get_section_name (ibfd, isection), FALSE);
+ osection = isection->output_section;
- /* Core files do not need to be relocated. */
- if (bfd_get_format (obfd) == bfd_core)
+ /* Core files and DWO files do not need to be relocated. */
+ if (bfd_get_format (obfd) == bfd_core || strip_symbols == STRIP_NONDWO)
relsize = 0;
else
{
}
if (relsize == 0)
- bfd_set_reloc (obfd, osection, NULL, 0);
+ {
+ bfd_set_reloc (obfd, osection, NULL, 0);
+ osection->flags &= ~SEC_RELOC;
+ }
else
{
relpp = (arelent **) xmalloc (relsize);
bfd_set_reloc (obfd, osection, relcount == 0 ? NULL : relpp, relcount);
if (relcount == 0)
- free (relpp);
+ {
+ osection->flags &= ~SEC_RELOC;
+ free (relpp);
+ }
}
+}
+
+/* Copy the data of input section ISECTION of IBFD
+ to an output section with the same name in OBFD. */
+
+static void
+copy_section (bfd *ibfd, sec_ptr isection, void *obfdarg)
+{
+ bfd *obfd = (bfd *) obfdarg;
+ struct section_list *p;
+ sec_ptr osection;
+ bfd_size_type size;
+
+ if (skip_section (ibfd, isection))
+ return;
+
+ osection = isection->output_section;
+ size = bfd_get_section_size (isection);
+
+ p = find_section_list (bfd_get_section_name (ibfd, isection), FALSE);
if (bfd_get_section_flags (ibfd, isection) & SEC_HAS_CONTENTS
&& bfd_get_section_flags (obfd, osection) & SEC_HAS_CONTENTS)
case 'd': /* Historic BSD alias for -g. Used by early NetBSD. */
strip_symbols = STRIP_DEBUG;
break;
+ case OPTION_STRIP_DWO:
+ strip_symbols = STRIP_DWO;
+ break;
case OPTION_STRIP_UNNEEDED:
strip_symbols = STRIP_UNNEEDED;
break;
case 'p':
preserve_dates = TRUE;
break;
+ case 'D':
+ deterministic = TRUE;
+ break;
case 'x':
discard_locals = LOCALS_ALL;
break;
It has already been checked in get_file_size(). */
stat (argv[i], &statbuf);
- if (output_file == NULL || strcmp (argv[i], output_file) == 0)
+ if (output_file == NULL
+ || filename_cmp (argv[i], output_file) == 0)
tmpname = make_tempname (argv[i]);
else
tmpname = output_file;
pe_section_alignment = PE_DEF_SECTION_ALIGNMENT;
break;
}
+ if (s != subsystem)
+ free ((char *) subsystem);
}
/* Convert EFI target to PEI target. */
strip_symbols = STRIP_DEBUG;
break;
+ case OPTION_STRIP_DWO:
+ strip_symbols = STRIP_DWO;
+ break;
+
case OPTION_STRIP_UNNEEDED:
strip_symbols = STRIP_UNNEEDED;
break;
preserve_dates = TRUE;
break;
+ case 'D':
+ deterministic = TRUE;
+ break;
+
case 'w':
wildcard = TRUE;
break;
bfd_flags_to_set &= ~D_PAGED;
break;
+ case OPTION_EXTRACT_DWO:
+ strip_symbols = STRIP_NONDWO;
+ break;
+
case OPTION_EXTRACT_SYMBOL:
extract_symbol = TRUE;
break;
/* If there is no destination file, or the source and destination files
are the same, then create a temp and rename the result into the input. */
- if (output_filename == NULL || strcmp (input_filename, output_filename) == 0)
+ if (output_filename == NULL
+ || filename_cmp (input_filename, output_filename) == 0)
tmpname = make_tempname (input_filename);
else
tmpname = output_filename;
projects / deliverable / binutils-gdb.git / blobdiff