bfd_boolean
bfd_make_readable PARAMS ((bfd *abfd));
+unsigned long
+bfd_calc_gnu_debuglink_crc32 PARAMS ((unsigned long crc, const unsigned char *buf, bfd_size_type len));
+
char *
bfd_follow_gnu_debuglink PARAMS ((bfd *abfd, const char *dir));
+bfd_boolean
+bfd_add_gnu_debuglink PARAMS ((bfd * abfd, const char * filename));
+
/* Extracted from libbfd.c. */
/* Byte swapping macros for user section data. */
without debug symbols).
*/
-static unsigned long calc_crc32 PARAMS ((unsigned long, const unsigned char *, size_t));
static char * get_debug_link_info PARAMS ((bfd *, unsigned long *));
static bfd_boolean separate_debug_file_exists PARAMS ((const char *, const unsigned long));
static char * find_separate_debug_file PARAMS ((bfd *, const char *));
+#define GNU_DEBUGLINK ".gnu_debuglink"
/*
-INTERNAL_FUNCTION
- calc_crc32
+FUNCTION
+ bfd_calc_gnu_debuglink_crc32
SYNOPSIS
- unsigned long calc_crc32 (unsigned long crc, const unsigned char *buf, size_t len);
+ unsigned long bfd_calc_gnu_debuglink_crc32 (unsigned long crc, const unsigned char *buf, bfd_size_type len);
DESCRIPTION
- Advance the CRC32 given by @var{crc} through @var{len}
- bytes of @var{buf}. Return the updated CRC32 value.
+ Computes a CRC value as used in the .gnu_debuglink section.
+ Advances the previously computed @var{crc} value by computing
+ and adding in the crc32 for @var{len} bytes of @var{buf}.
+
+RETURNS
+ Return the updated CRC32 value.
*/
-static unsigned long
-calc_crc32 (crc, buf, len)
+unsigned long
+bfd_calc_gnu_debuglink_crc32 (crc, buf, len)
unsigned long crc;
const unsigned char *buf;
- size_t len;
+ bfd_size_type len;
{
static const unsigned long crc32_table[256] =
{
get_debug_link_info
SYNOPSIS
- char *get_debug_link_info (bfd *abfd, unsigned long *crc32_out)
+ char * get_debug_link_info (bfd * abfd, unsigned long * crc32_out)
DESCRIPTION
fetch the filename and CRC32 value for any separate debuginfo
static char *
get_debug_link_info (abfd, crc32_out)
- bfd *abfd;
- unsigned long *crc32_out;
+ bfd * abfd;
+ unsigned long * crc32_out;
{
asection * sect;
bfd_size_type debuglink_size;
BFD_ASSERT (abfd);
BFD_ASSERT (crc32_out);
- sect = bfd_get_section_by_name (abfd, ".gnu_debuglink");
+ sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK);
if (sect == NULL)
return NULL;
debuglink_size = bfd_section_size (abfd, sect);
- contents = xmalloc (debuglink_size);
+ contents = malloc (debuglink_size);
+ if (contents == NULL)
+ return NULL;
+
ret = bfd_get_section_contents (abfd, sect, contents,
(file_ptr)0, debuglink_size);
if (! ret)
static char buffer [8 * 1024];
unsigned long file_crc = 0;
int fd;
- int count;
+ bfd_size_type count;
BFD_ASSERT (name);
return FALSE;
while ((count = read (fd, buffer, sizeof (buffer))) > 0)
- file_crc = calc_crc32 (file_crc, buffer, count);
+ file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count);
close (fd);
return NULL;
basename = get_debug_link_info (abfd, & crc32);
-
if (basename == NULL)
return NULL;
+
if (strlen (basename) < 1)
{
free (basename);
return NULL;
}
- dir = xstrdup (abfd->filename);
+ dir = strdup (abfd->filename);
+ if (dir == NULL)
+ {
+ free (basename);
+ return NULL;
+ }
BFD_ASSERT (strlen (dir) != 0);
/* Strip off filename part. */
dir[i + 1] = '\0';
BFD_ASSERT (dir[i] == '/' || dir[0] == '\0')
- debugfile = xmalloc (strlen (debug_file_directory) + 1
- + strlen (dir)
- + strlen (".debug/")
- + strlen (basename)
- + 1);
+ debugfile = malloc (strlen (debug_file_directory) + 1
+ + strlen (dir)
+ + strlen (".debug/")
+ + strlen (basename)
+ + 1);
+ if (debugfile == NULL)
+ {
+ free (basename);
+ free (dir);
+ return NULL;
+ }
/* First try in the same directory as the original file: */
strcpy (debugfile, dir);
#endif
return find_separate_debug_file (abfd, dir);
}
+
+/*
+FUNCTION
+ bfd_add_gnu_debuglink
+
+SYNOPSIS
+ bfd_boolean bfd_add_gnu_debuglink (bfd * abfd, const char * filename);
+
+DESCRIPTION
+
+ Takes a @var{BFD} and adds a .gnu_debuglink section containing a link
+ to the specified @var{filename}. The filename should be relative to
+ the current directory.
+
+RETURNS
+ <<TRUE>> is returned if all is ok. Otherwise <<FALSE>> is returned
+ and bfd_error is set.
+*/
+
+bfd_boolean
+bfd_add_gnu_debuglink (abfd, filename)
+ bfd *abfd;
+ const char * filename;
+{
+ asection * sect;
+ bfd_size_type debuglink_size;
+ unsigned long crc32;
+ char * contents;
+ bfd_size_type crc_offset;
+ FILE * handle;
+ static char buffer[8 * 1024];
+ size_t count;
+
+ if (abfd == NULL || filename == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ /* Make sure that we can read the file.
+ XXX - Should we attempt to locate the debug info file using the same
+ algorithm as gdb ? At the moment, since we are creating the
+ .gnu_debuglink section, we insist upon the user providing us with a
+ correct-for-section-creation-time path, but this need not conform to
+ the gdb location algorithm. */
+ handle = fopen (filename, FOPEN_RB);
+ if (handle == NULL)
+ {
+ bfd_set_error (bfd_error_system_call);
+ return FALSE;
+ }
+
+ crc32 = 0;
+ while ((count = fread (buffer, 1, sizeof buffer, handle)) > 0)
+ crc32 = bfd_calc_gnu_debuglink_crc32 (crc32, buffer, count);
+ fclose (handle);
+
+ /* Strip off any path components in filename,
+ now that we no longer need them. */
+ filename = lbasename (filename);
+
+ sect = bfd_get_section_by_name (abfd, GNU_DEBUGLINK);
+ if (sect)
+ {
+ /* Section already exists. */
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ sect = bfd_make_section (abfd, GNU_DEBUGLINK);
+ if (sect == NULL)
+ return FALSE;
+
+ if (! bfd_set_section_flags (abfd, sect,
+ SEC_HAS_CONTENTS | SEC_DEBUGGING))
+ /* XXX Should we delete the section from the bfd ? */
+ return FALSE;
+
+
+ debuglink_size = strlen (filename) + 1;
+ debuglink_size += 3;
+ debuglink_size &= ~3;
+ debuglink_size += 4;
+
+ if (! bfd_set_section_size (abfd, sect, debuglink_size))
+ /* XXX Should we delete the section from the bfd ? */
+ return FALSE;
+
+ contents = malloc (debuglink_size);
+ if (contents == NULL)
+ {
+ /* XXX Should we delete the section from the bfd ? */
+ bfd_set_error (bfd_error_no_memory);
+ return FALSE;
+ }
+
+ strcpy (contents, filename);
+ crc_offset = debuglink_size - 4;
+
+ bfd_put_32 (abfd, crc32, (bfd_byte *) (contents + crc_offset));
+
+ if (! bfd_set_section_contents (abfd, sect, contents,
+ (file_ptr)0, debuglink_size))
+ {
+ /* XXX Should we delete the section from the bfd ? */
+ free (contents);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+2003-06-11 Nick Clifton <nickc@redhat.com>
+
+ * objcopy.c (gnu_debuglink_filename): New variable.
+ (OPTION_ADD_GNU_DEBUGLINK): New switch
+ (copy_options): Describe --add-gnu-debuglink switch.
+ Mention that --strip-debug removes sections as well.
+ (is_strip_section): Process the sections removed and kept
+ lists before checking for debugging sections.
+ (add_redefine_syms_file): Make function static.
+ (copy_object): Use is_strip_section.
+ Check to see if a .gnu_debuglink section should be added. If
+ so, call bfd_add_gnu_debuglink.
+ (setup_section): Use is_strip_section.
+ (copy_section): Use is_strip_section.
+ (copy_main): Handle OPTION_ADD_GNU_DEBUGLINK.
+ * NEWS: Mention new objcopy switch.
+ * doc/binutils.texi: Document new switch.
+
2003-06-11 H.J. Lu <hongjiu.lu@intel.com>
* po/Make-in (DESTDIR): New.
-*- text -*-
+* objcopy now accepts --add-gnu-debuglink=<file> to insert a .gnu_debuglink
+ section into a (presumably stripped) executable. This allows the debug
+ information for the file to be held in a seperate file.
+
* BFD marks the sections .comment and .note as 'n' in the BSD/POSIX
single-character representation. This can be checked by running nm
with the -a switch.
[@option{-I} @var{bfdname}|@option{--input-target=}@var{bfdname}]
[@option{-O} @var{bfdname}|@option{--output-target=}@var{bfdname}]
[@option{-B} @var{bfdarch}|@option{--binary-architecture=}@var{bfdarch}]
- [@option{-S}|@option{--strip-all}] [@option{-g}|@option{--strip-debug}]
+ [@option{-S}|@option{--strip-all}]
+ [@option{-g}|@option{--strip-debug}]
+ [@option{--add-gnu-debuglink=}@var{path-to-file}]
[@option{-K} @var{symbolname}|@option{--keep-symbol=}@var{symbolname}]
[@option{-N} @var{symbolname}|@option{--strip-symbol=}@var{symbolname}]
[@option{-G} @var{symbolname}|@option{--keep-global-symbol=}@var{symbolname}]
[@option{-L} @var{symbolname}|@option{--localize-symbol=}@var{symbolname}]
[@option{-W} @var{symbolname}|@option{--weaken-symbol=}@var{symbolname}]
- [@option{-x}|@option{--discard-all}] [@option{-X}|@option{--discard-locals}]
+ [@option{-x}|@option{--discard-all}]
+ [@option{-X}|@option{--discard-locals}]
[@option{-b} @var{byte}|@option{--byte=}@var{byte}]
[@option{-i} @var{interleave}|@option{--interleave=}@var{interleave}]
[@option{-j} @var{sectionname}|@option{--only-section=}@var{sectionname}]
[@option{-R} @var{sectionname}|@option{--remove-section=}@var{sectionname}]
[@option{-p}|@option{--preserve-dates}]
[@option{--debugging}]
- [@option{--gap-fill=}@var{val}] [@option{--pad-to=}@var{address}]
- [@option{--set-start=}@var{val}] [@option{--adjust-start=}@var{incr}]
+ [@option{--gap-fill=}@var{val}]
+ [@option{--pad-to=}@var{address}]
+ [@option{--set-start=}@var{val}]
+ [@option{--adjust-start=}@var{incr}]
[@option{--change-addresses=}@var{incr}]
[@option{--change-section-address} @var{section}@{=,+,-@}@var{val}]
[@option{--change-section-lma} @var{section}@{=,+,-@}@var{val}]
[@option{--set-section-flags} @var{section}=@var{flags}]
[@option{--add-section} @var{sectionname}=@var{filename}]
[@option{--rename-section} @var{oldname}=@var{newname}[,@var{flags}]]
- [@option{--change-leading-char} ] [@option{--remove-leading-char}]
- [@option{--srec-len=}@var{ival} ] [@option{--srec-forceS3}]
- [@option{--redefine-sym} @var{old}=@var{new} ]
- [@option{--redefine-syms=}@var{filename} ]
+ [@option{--change-leading-char}] [@option{--remove-leading-char}]
+ [@option{--srec-len=}@var{ival}] [@option{--srec-forceS3}]
+ [@option{--redefine-sym} @var{old}=@var{new}]
+ [@option{--redefine-syms=}@var{filename}]
[@option{--weaken}]
[@option{--keep-symbols=}@var{filename}]
[@option{--strip-symbols=}@var{filename}]
@item -g
@itemx --strip-debug
-Do not copy debugging symbols from the source file.
+Do not copy debugging symbols or sections from the source file.
@item --strip-unneeded
Strip all symbols that are not needed for relocation processing.
+@item --add-gnu-debuglink=@var{path-to-file}
+Creates a .gnu_debuglink section which contains a reference to @var{path-to-file}
+and adds it to the output file.
+
@item -K @var{symbolname}
@itemx --keep-symbol=@var{symbolname}
Copy only symbol @var{symbolname} from the source file. This option may
@smallexample
@c man begin SYNOPSIS strip
-strip [@option{-F} @var{bfdname} |@option{--target=}@var{bfdname} ]
- [@option{-I} @var{bfdname} |@option{--input-target=}@var{bfdname} ]
- [@option{-O} @var{bfdname} |@option{--output-target=}@var{bfdname} ]
- [@option{-s}|@option{--strip-all}] [@option{-S}|@option{-g}|@option{-d}|@option{--strip-debug}]
- [@option{-K} @var{symbolname} |@option{--keep-symbol=}@var{symbolname} ]
- [@option{-N} @var{symbolname} |@option{--strip-symbol=}@var{symbolname} ]
- [@option{-x}|@option{--discard-all} ] [@option{-X} |@option{--discard-locals}]
- [@option{-R} @var{sectionname} |@option{--remove-section=}@var{sectionname} ]
- [@option{-o} @var{file} ] [@option{-p}|@option{--preserve-dates}]
+strip [@option{-F} @var{bfdname} |@option{--target=}@var{bfdname}]
+ [@option{-I} @var{bfdname} |@option{--input-target=}@var{bfdname}]
+ [@option{-O} @var{bfdname} |@option{--output-target=}@var{bfdname}]
+ [@option{-s}|@option{--strip-all}]
+ [@option{-S}|@option{-g}|@option{-d}|@option{--strip-debug}]
+ [@option{-K} @var{symbolname} |@option{--keep-symbol=}@var{symbolname}]
+ [@option{-N} @var{symbolname} |@option{--strip-symbol=}@var{symbolname}]
+ [@option{-x}|@option{--discard-all}] [@option{-X} |@option{--discard-locals}]
+ [@option{-R} @var{sectionname} |@option{--remove-section=}@var{sectionname}]
+ [@option{-o} @var{file}] [@option{-p}|@option{--preserve-dates}]
[@option{-v} |@option{--verbose}] [@option{-V}|@option{--version}]
[@option{--help}] [@option{--info}]
@var{objfile}@dots{}
PARAMS ((bfd *, sec_ptr, flagword *));
static void add_section_rename
PARAMS ((const char *, const char *, flagword));
+static void add_redefine_syms_file
+ PARAMS ((const char *));
#define RETURN_NONFATAL(s) {bfd_nonfatal (s); status = 1; return;}
/* List of sections to add to the output BFD. */
static struct section_add *add_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;
+
/* Whether to convert debugging information. */
static bfd_boolean convert_debugging = FALSE;
#define OPTION_PREFIX_SECTIONS (OPTION_PREFIX_SYMBOLS + 1)
#define OPTION_PREFIX_ALLOC_SECTIONS (OPTION_PREFIX_SECTIONS + 1)
#define OPTION_FORMATS_INFO (OPTION_PREFIX_ALLOC_SECTIONS + 1)
+#define OPTION_ADD_GNU_DEBUGLINK (OPTION_FORMATS_INFO + 1)
/* Options to handle if running as "strip". */
static struct option copy_options[] =
{
+ {"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
{"add-section", required_argument, 0, OPTION_ADD_SECTION},
{"adjust-start", required_argument, 0, OPTION_CHANGE_START},
{"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
--debugging Convert debugging information, if possible\n\
-p --preserve-dates Copy modified/access timestamps to the output\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\n\
+ -g --strip-debug Remove all debugging symbols & sections\n\
--strip-unneeded Remove all symbols not needed by relocations\n\
-N --strip-symbol <name> Do not copy symbol <name>\n\
-K --keep-symbol <name> Only copy symbol <name>\n\
-p --preserve-dates Copy modified/access timestamps to the output\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\n\
+ -g -S -d --strip-debug Remove all debugging symbols & sections\n\
--strip-unneeded Remove all symbols not needed by relocations\n\
-N --strip-symbol=<name> Do not copy symbol <name>\n\
-K --keep-symbol=<name> Only copy symbol <name>\n\
bfd *abfd ATTRIBUTE_UNUSED;
asection *sec;
{
- struct section_list *p;
+ if (sections_removed || sections_copied)
+ {
+ struct section_list *p;
+
+ p = find_section_list (bfd_get_section_name (abfd, sec), FALSE);
+
+ if (sections_removed && p != NULL && p->remove)
+ return TRUE;
+ if (sections_copied && (p == NULL || ! p->copy))
+ return TRUE;
+ }
- if ((bfd_get_section_flags (abfd, sec) & SEC_DEBUGGING) != 0
- && (strip_symbols == STRIP_DEBUG
+ if ((bfd_get_section_flags (abfd, sec) & SEC_DEBUGGING) != 0)
+ {
+ if (strip_symbols == STRIP_DEBUG
|| strip_symbols == STRIP_UNNEEDED
|| strip_symbols == STRIP_ALL
|| discard_locals == LOCALS_ALL
- || convert_debugging))
- return TRUE;
-
- if (! sections_removed && ! sections_copied)
- return FALSE;
+ || convert_debugging)
+ return TRUE;
+ }
- p = find_section_list (bfd_get_section_name (abfd, sec), FALSE);
- if (sections_removed && p != NULL && p->remove)
- return TRUE;
- if (sections_copied && (p == NULL || ! p->copy))
- return TRUE;
return FALSE;
}
/* Handle the --redefine-syms option. Read lines containing "old new"
from the file, and add them to the symbol redefine list. */
-void
+static void
add_redefine_syms_file (filename)
const char *filename;
{
for (padd = add_sections; padd != NULL; padd = padd->next)
{
+ flagword flags;
+
padd->section = bfd_make_section (obfd, padd->name);
if (padd->section == NULL)
{
status = 1;
return;
}
- else
- {
- flagword flags;
-
- if (! bfd_set_section_size (obfd, padd->section, padd->size))
- RETURN_NONFATAL (bfd_get_filename (obfd));
- pset = find_section_list (padd->name, FALSE);
- if (pset != NULL)
- pset->used = TRUE;
+ if (! bfd_set_section_size (obfd, padd->section, padd->size))
+ RETURN_NONFATAL (bfd_get_filename (obfd));
- if (pset != NULL && pset->set_flags)
- flags = pset->flags | SEC_HAS_CONTENTS;
- else
- flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA;
+ pset = find_section_list (padd->name, FALSE);
+ if (pset != NULL)
+ pset->used = TRUE;
- if (! bfd_set_section_flags (obfd, padd->section, flags))
- RETURN_NONFATAL (bfd_get_filename (obfd));
+ if (pset != NULL && pset->set_flags)
+ flags = pset->flags | SEC_HAS_CONTENTS;
+ else
+ flags = SEC_HAS_CONTENTS | SEC_READONLY | SEC_DATA;
- if (pset != NULL)
- {
- if (pset->change_vma != CHANGE_IGNORE)
- if (! bfd_set_section_vma (obfd, padd->section, pset->vma_val))
- RETURN_NONFATAL (bfd_get_filename (obfd));
+ if (! bfd_set_section_flags (obfd, padd->section, flags))
+ RETURN_NONFATAL (bfd_get_filename (obfd));
- if (pset->change_lma != CHANGE_IGNORE)
- {
- padd->section->lma = pset->lma_val;
+ if (pset != NULL)
+ {
+ if (pset->change_vma != CHANGE_IGNORE)
+ if (! bfd_set_section_vma (obfd, padd->section, pset->vma_val))
+ RETURN_NONFATAL (bfd_get_filename (obfd));
- if (! bfd_set_section_alignment
- (obfd, padd->section,
- bfd_section_alignment (obfd, padd->section)))
- RETURN_NONFATAL (bfd_get_filename (obfd));
- }
+ if (pset->change_lma != CHANGE_IGNORE)
+ {
+ padd->section->lma = pset->lma_val;
+
+ if (! bfd_set_section_alignment
+ (obfd, padd->section,
+ bfd_section_alignment (obfd, padd->section)))
+ RETURN_NONFATAL (bfd_get_filename (obfd));
}
}
}
}
+ if (gnu_debuglink_filename != NULL)
+ {
+ if (! bfd_add_gnu_debuglink (obfd, gnu_debuglink_filename))
+ RETURN_NONFATAL (gnu_debuglink_filename);
+ }
+
if (gap_fill_set || pad_to_set)
{
asection **set;
const char * name;
char *prefix = NULL;
- if ((bfd_get_section_flags (ibfd, isection) & SEC_DEBUGGING) != 0
- && (strip_symbols == STRIP_DEBUG
- || strip_symbols == STRIP_UNNEEDED
- || strip_symbols == STRIP_ALL
- || discard_locals == LOCALS_ALL
- || convert_debugging))
+ if (is_strip_section (ibfd, isection))
return;
p = find_section_list (bfd_section_name (ibfd, isection), FALSE);
if (p != NULL)
p->used = TRUE;
- if (sections_removed && p != NULL && p->remove)
- return;
- if (sections_copied && (p == NULL || ! p->copy))
- return;
-
/* Get the, possibly new, name of the output section. */
name = find_section_rename (ibfd, isection, & flags);
if (status != 0)
return;
- flags = bfd_get_section_flags (ibfd, isection);
- if ((flags & SEC_DEBUGGING) != 0
- && (strip_symbols == STRIP_DEBUG
- || strip_symbols == STRIP_UNNEEDED
- || strip_symbols == STRIP_ALL
- || discard_locals == LOCALS_ALL
- || convert_debugging))
+ if (is_strip_section (ibfd, isection))
return;
+ flags = bfd_get_section_flags (ibfd, isection);
if ((flags & SEC_GROUP) != 0)
return;
- p = find_section_list (bfd_section_name (ibfd, isection), FALSE);
-
- if (sections_removed && p != NULL && p->remove)
- return;
- if (sections_copied && (p == NULL || ! p->copy))
- return;
-
osection = isection->output_section;
size = bfd_get_section_size_before_reloc (isection);
if (size == 0 || osection == 0)
return;
+ p = find_section_list (bfd_get_section_name (ibfd, isection), FALSE);
+
/* Core files do not need to be relocated. */
if (bfd_get_format (obfd) == bfd_core)
relsize = 0;
strip_symbols = STRIP_UNNEEDED;
break;
+ case OPTION_ADD_GNU_DEBUGLINK:
+ gnu_debuglink_filename = optarg;
+ break;
+
case 'K':
add_specific_symbol (optarg, &keep_specific_list);
break;
break;
case 0:
- break; /* we've been given a long option */
+ /* We've been given a long option. */
+ break;
case 'H':
case 'h':
projects / thirdparty / binutils-gdb.git / commitdiff
