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Add ability for objcopy to insert new symbols into a binary.

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PR binutils/19104
binutils * objcopy.c (command_line_switch): Add OPTION_ADD_SYMBOL.
	(copy_options): Add add-symbol.
	(copy_usage): Likewise.
	(parse_symflags): New function.
	(need_sym_before): New function.
	(create_new_symbol): New function.
	(filter_symbols): Add code to insert new symbols.
	(copy_main): Process OPTION_ADD_SYMBOL.
	* doc/binutils.texi: Document new feature.
	* NEWS: Add note about the new feature.

tests	* binutils-all/add-symbol.d: New test.
	* binutils-all/objcopy.exp: Run the new test.
This commit is contained in:
Ronald Hoogenbllon 2015-10-21 15:16:35 +01:00 committed by Nick Clifton
parent 1283d92f0e
commit 2b35fb28f3
7 changed files with 356 additions and 100 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
binutils/ChangeLog
View File

@ -1,3 +1,17 @@
2015-10-21 Ronald Hoogenbllon <rhoogenboom@irdeto.com>
PR binutils/19104
* objcopy.c (command_line_switch): Add OPTION_ADD_SYMBOL.
(copy_options): Add add-symbol.
(copy_usage): Likewise.
(parse_symflags): New function.
(need_sym_before): New function.
(create_new_symbol): New function.
(filter_symbols): Add code to insert new symbols.
(copy_main): Process OPTION_ADD_SYMBOL.
* doc/binutils.texi: Document new feature.
* NEWS: Add note about the new feature.
2015-10-18 Paul Pluzhnikov <ppluzhnikov@google.com>
PR binutils/19147

3
binutils/NEWS
View File

@ -1,5 +1,8 @@
-*- text -*-
* Add option to objcopy to insert new symbols into a file:
--add-symbol <name>=[<section>:]<value>[,<flags>]
* Add support for the ARC EM/HS, and ARC600/700 architectures.
* Extend objcopy --compress-debug-sections option to support

13
binutils/doc/binutils.texi
View File

@ -1106,6 +1106,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}]
[@option{--localize-symbols=}@var{filename}]
[@option{--globalize-symbols=}@var{filename}]
[@option{--weaken-symbols=}@var{filename}]
[@option{--add-symbol} @var{name}=[@var{section}:]@var{value}[,@var{flags}]
[@option{--alt-machine-code=}@var{index}]
[@option{--prefix-symbols=}@var{string}]
[@option{--prefix-sections=}@var{string}]
@ -1504,6 +1505,18 @@ command line. In this case, pass the original section name to
@option{--update-section}, and the original and new section names to
@option{--rename-section}.
@item --add-symbol @var{name}=[@var{section}:]@var{value}[,@var{flags}]
Add a new symbol named @var{name} while copying the file. This option may be
specified multiple times. If the @var{section} is given, the symbol will be
associated with and relative to that section, otherwise it will be an ABS
symbol. Specifying an undefined section will result in a fatal error. There
is no check for the value, it will be taken as specified. Symbol flags can
be specified and not all flags will be meaningful for all object file
formats. By default, the symbol will be global. The special flag
'before=@var{othersym}' will insert the new symbol in front of the specified
@var{othersym}, otherwise the symbol(s) will be added at the end of the
symbol table in the order they appear.
@item --rename-section @var{oldname}=@var{newname}[,@var{flags}]
Rename a section from @var{oldname} to @var{newname}, optionally
changing the section's flags to @var{flags} in the process. This has

403
binutils/objcopy.c
View File

@ -50,7 +50,7 @@ static short pe_minor_subsystem_version = -1;
struct is_specified_symbol_predicate_data
{
const char *name;
const char * name;
bfd_boolean found;
};
@ -62,6 +62,16 @@ struct redefine_node
struct redefine_node *next;
};
struct addsym_node
{
struct addsym_node *next;
char * symdef;
long symval;
flagword flags;
char * section;
char * othersym;
};
typedef struct section_rename
{
const char * old_name;
@ -88,26 +98,26 @@ static int deterministic = -1; /* Enable deterministic archives. */
static int status = 0; /* Exit status. */
enum strip_action
{
STRIP_UNDEF,
STRIP_NONE, /* Don't strip. */
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. */
};
{
STRIP_UNDEF,
STRIP_NONE, /* Don't strip. */
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. */
};
/* Which symbols to remove. */
static enum strip_action strip_symbols = STRIP_UNDEF;
enum locals_action
{
LOCALS_UNDEF,
LOCALS_START_L, /* Discard locals starting with L. */
LOCALS_ALL /* Discard all locals. */
};
{
LOCALS_UNDEF,
LOCALS_START_L, /* Discard locals starting with L. */
LOCALS_ALL /* Discard all locals. */
};
/* Which local symbols to remove. Overrides STRIP_ALL. */
static enum locals_action discard_locals;
@ -232,6 +242,8 @@ static htab_t globalize_specific_htab = NULL;
static htab_t keepglobal_specific_htab = NULL;
static htab_t weaken_specific_htab = NULL;
static struct redefine_node *redefine_sym_list = NULL;
static struct addsym_node *add_sym_list = NULL, **add_sym_tail = &add_sym_list;
static int add_symbols = 0;
/* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
static bfd_boolean weaken = FALSE;
@ -254,11 +266,11 @@ static int reverse_bytes = 0;
/* For Coff objects, we may want to allow or disallow long section names,
or preserve them where found in the inputs. Debug info relies on them. */
enum long_section_name_handling
{
DISABLE,
ENABLE,
KEEP
};
{
DISABLE,
ENABLE,
KEEP
};
/* The default long section handling mode is to preserve them.
This is also the only behaviour for 'strip'. */
@ -266,68 +278,69 @@ static enum long_section_name_handling long_section_names = KEEP;
/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
enum command_line_switch
{
OPTION_ADD_SECTION=150,
OPTION_UPDATE_SECTION,
OPTION_DUMP_SECTION,
OPTION_CHANGE_ADDRESSES,
OPTION_CHANGE_LEADING_CHAR,
OPTION_CHANGE_START,
OPTION_CHANGE_SECTION_ADDRESS,
OPTION_CHANGE_SECTION_LMA,
OPTION_CHANGE_SECTION_VMA,
OPTION_CHANGE_WARNINGS,
OPTION_COMPRESS_DEBUG_SECTIONS,
OPTION_DEBUGGING,
OPTION_DECOMPRESS_DEBUG_SECTIONS,
OPTION_GAP_FILL,
OPTION_NO_CHANGE_WARNINGS,
OPTION_PAD_TO,
OPTION_REMOVE_LEADING_CHAR,
OPTION_SET_SECTION_FLAGS,
OPTION_SET_START,
OPTION_STRIP_UNNEEDED,
OPTION_WEAKEN,
OPTION_REDEFINE_SYM,
OPTION_REDEFINE_SYMS,
OPTION_SREC_LEN,
OPTION_SREC_FORCES3,
OPTION_STRIP_SYMBOLS,
OPTION_STRIP_UNNEEDED_SYMBOL,
OPTION_STRIP_UNNEEDED_SYMBOLS,
OPTION_KEEP_SYMBOLS,
OPTION_LOCALIZE_HIDDEN,
OPTION_LOCALIZE_SYMBOLS,
OPTION_LONG_SECTION_NAMES,
OPTION_GLOBALIZE_SYMBOL,
OPTION_GLOBALIZE_SYMBOLS,
OPTION_KEEPGLOBAL_SYMBOLS,
OPTION_WEAKEN_SYMBOLS,
OPTION_RENAME_SECTION,
OPTION_ALT_MACH_CODE,
OPTION_PREFIX_SYMBOLS,
OPTION_PREFIX_SECTIONS,
OPTION_PREFIX_ALLOC_SECTIONS,
OPTION_FORMATS_INFO,
OPTION_ADD_GNU_DEBUGLINK,
OPTION_ONLY_KEEP_DEBUG,
OPTION_KEEP_FILE_SYMBOLS,
OPTION_READONLY_TEXT,
OPTION_WRITABLE_TEXT,
OPTION_PURE,
OPTION_IMPURE,
OPTION_EXTRACT_SYMBOL,
OPTION_REVERSE_BYTES,
OPTION_FILE_ALIGNMENT,
OPTION_HEAP,
OPTION_IMAGE_BASE,
OPTION_SECTION_ALIGNMENT,
OPTION_STACK,
OPTION_INTERLEAVE_WIDTH,
OPTION_SUBSYSTEM,
OPTION_EXTRACT_DWO,
OPTION_STRIP_DWO
};
{
OPTION_ADD_SECTION=150,
OPTION_ADD_GNU_DEBUGLINK,
OPTION_ADD_SYMBOL,
OPTION_ALT_MACH_CODE,
OPTION_CHANGE_ADDRESSES,
OPTION_CHANGE_LEADING_CHAR,
OPTION_CHANGE_SECTION_ADDRESS,
OPTION_CHANGE_SECTION_LMA,
OPTION_CHANGE_SECTION_VMA,
OPTION_CHANGE_START,
OPTION_CHANGE_WARNINGS,
OPTION_COMPRESS_DEBUG_SECTIONS,
OPTION_DEBUGGING,
OPTION_DECOMPRESS_DEBUG_SECTIONS,
OPTION_DUMP_SECTION,
OPTION_EXTRACT_DWO,
OPTION_EXTRACT_SYMBOL,
OPTION_FILE_ALIGNMENT,
OPTION_FORMATS_INFO,
OPTION_GAP_FILL,
OPTION_GLOBALIZE_SYMBOL,
OPTION_GLOBALIZE_SYMBOLS,
OPTION_HEAP,
OPTION_IMAGE_BASE,
OPTION_IMPURE,
OPTION_INTERLEAVE_WIDTH,
OPTION_KEEPGLOBAL_SYMBOLS,
OPTION_KEEP_FILE_SYMBOLS,
OPTION_KEEP_SYMBOLS,
OPTION_LOCALIZE_HIDDEN,
OPTION_LOCALIZE_SYMBOLS,
OPTION_LONG_SECTION_NAMES,
OPTION_NO_CHANGE_WARNINGS,
OPTION_ONLY_KEEP_DEBUG,
OPTION_PAD_TO,
OPTION_PREFIX_ALLOC_SECTIONS,
OPTION_PREFIX_SECTIONS,
OPTION_PREFIX_SYMBOLS,
OPTION_PURE,
OPTION_READONLY_TEXT,
OPTION_REDEFINE_SYM,
OPTION_REDEFINE_SYMS,
OPTION_REMOVE_LEADING_CHAR,
OPTION_RENAME_SECTION,
OPTION_REVERSE_BYTES,
OPTION_SECTION_ALIGNMENT,
OPTION_SET_SECTION_FLAGS,
OPTION_SET_START,
OPTION_SREC_FORCES3,
OPTION_SREC_LEN,
OPTION_STACK,
OPTION_STRIP_DWO,
OPTION_STRIP_SYMBOLS,
OPTION_STRIP_UNNEEDED,
OPTION_STRIP_UNNEEDED_SYMBOL,
OPTION_STRIP_UNNEEDED_SYMBOLS,
OPTION_SUBSYSTEM,
OPTION_UPDATE_SECTION,
OPTION_WEAKEN,
OPTION_WEAKEN_SYMBOLS,
OPTION_WRITABLE_TEXT
};
/* Options to handle if running as "strip". */
@ -345,16 +358,16 @@ static struct option strip_options[] =
{"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
{"keep-symbol", required_argument, 0, 'K'},
{"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
{"output-file", required_argument, 0, 'o'},
{"output-format", required_argument, 0, 'O'}, /* Obsolete */
{"output-target", required_argument, 0, 'O'},
{"output-file", required_argument, 0, 'o'},
{"preserve-dates", no_argument, 0, 'p'},
{"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'},
{"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
{"target", required_argument, 0, 'F'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
@ -368,10 +381,10 @@ static struct option copy_options[] =
{
{"add-gnu-debuglink", required_argument, 0, OPTION_ADD_GNU_DEBUGLINK},
{"add-section", required_argument, 0, OPTION_ADD_SECTION},
{"update-section", required_argument, 0, OPTION_UPDATE_SECTION},
{"add-symbol", required_argument, 0, OPTION_ADD_SYMBOL},
{"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
{"adjust-start", required_argument, 0, OPTION_CHANGE_START},
{"adjust-vma", required_argument, 0, OPTION_CHANGE_ADDRESSES},
{"adjust-section-vma", required_argument, 0, OPTION_CHANGE_SECTION_ADDRESS},
{"adjust-warnings", no_argument, 0, OPTION_CHANGE_WARNINGS},
{"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE},
{"binary-architecture", required_argument, 0, 'B'},
@ -393,11 +406,14 @@ static struct option copy_options[] =
{"enable-deterministic-archives", no_argument, 0, 'D'},
{"extract-dwo", no_argument, 0, OPTION_EXTRACT_DWO},
{"extract-symbol", no_argument, 0, OPTION_EXTRACT_SYMBOL},
{"file-alignment", required_argument, 0, OPTION_FILE_ALIGNMENT},
{"format", required_argument, 0, 'F'}, /* Obsolete */
{"gap-fill", required_argument, 0, OPTION_GAP_FILL},
{"globalize-symbol", required_argument, 0, OPTION_GLOBALIZE_SYMBOL},
{"globalize-symbols", required_argument, 0, OPTION_GLOBALIZE_SYMBOLS},
{"heap", required_argument, 0, OPTION_HEAP},
{"help", no_argument, 0, 'h'},
{"image-base", required_argument, 0 , OPTION_IMAGE_BASE},
{"impure", no_argument, 0, OPTION_IMPURE},
{"info", no_argument, 0, OPTION_FORMATS_INFO},
{"input-format", required_argument, 0, 'I'}, /* Obsolete */
@ -420,9 +436,9 @@ static struct option copy_options[] =
{"output-format", required_argument, 0, 'O'}, /* Obsolete */
{"output-target", required_argument, 0, 'O'},
{"pad-to", required_argument, 0, OPTION_PAD_TO},
{"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS},
{"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS},
{"prefix-alloc-sections", required_argument, 0, OPTION_PREFIX_ALLOC_SECTIONS},
{"prefix-sections", required_argument, 0, OPTION_PREFIX_SECTIONS},
{"prefix-symbols", required_argument, 0, OPTION_PREFIX_SYMBOLS},
{"preserve-dates", no_argument, 0, 'p'},
{"pure", no_argument, 0, OPTION_PURE},
{"readonly-text", no_argument, 0, OPTION_READONLY_TEXT},
@ -432,19 +448,23 @@ static struct option copy_options[] =
{"remove-section", required_argument, 0, 'R'},
{"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
{"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES},
{"section-alignment", required_argument, 0, OPTION_SECTION_ALIGNMENT},
{"set-section-flags", required_argument, 0, OPTION_SET_SECTION_FLAGS},
{"set-start", required_argument, 0, OPTION_SET_START},
{"srec-len", required_argument, 0, OPTION_SREC_LEN},
{"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
{"srec-len", required_argument, 0, OPTION_SREC_LEN},
{"stack", required_argument, 0, OPTION_STACK},
{"strip-all", no_argument, 0, 'S'},
{"strip-debug", no_argument, 0, 'g'},
{"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
{"strip-symbol", required_argument, 0, 'N'},
{"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
{"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},
{"strip-symbol", required_argument, 0, 'N'},
{"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
{"subsystem", required_argument, 0, OPTION_SUBSYSTEM},
{"target", required_argument, 0, 'F'},
{"update-section", required_argument, 0, OPTION_UPDATE_SECTION},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"weaken", no_argument, 0, OPTION_WEAKEN},
@ -452,12 +472,6 @@ static struct option copy_options[] =
{"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS},
{"wildcard", no_argument, 0, 'w'},
{"writable-text", no_argument, 0, OPTION_WRITABLE_TEXT},
{"file-alignment", required_argument, 0, OPTION_FILE_ALIGNMENT},
{"heap", required_argument, 0, OPTION_HEAP},
{"image-base", required_argument, 0 , OPTION_IMAGE_BASE},
{"section-alignment", required_argument, 0, OPTION_SECTION_ALIGNMENT},
{"stack", required_argument, 0, OPTION_STACK},
{"subsystem", required_argument, 0, OPTION_SUBSYSTEM},
{0, no_argument, 0, 0}
};
@ -585,6 +599,7 @@ copy_usage (FILE *stream, int exit_status)
--globalize-symbols <file> --globalize-symbol for all in <file>\n\
--keep-global-symbols <file> -G for all symbols listed in <file>\n\
--weaken-symbols <file> -W for all symbols listed in <file>\n\
--add-symbol <name>=[<section>:]<value>[,<flags>] Add a symbol\n\
--alt-machine-code <index> Use the target's <index>'th alternative machine\n\
--writable-text Mark the output text as writable\n\
--readonly-text Make the output text write protected\n\
@ -727,6 +742,78 @@ parse_flags (const char *s)
return ret;
}
/* Parse symbol flags into a flagword, with a fatal error if the
string can't be parsed. */
static flagword
parse_symflags (const char *s, char **other)
{
flagword ret;
const char *snext;
int len;
ret = BSF_NO_FLAGS;
do
{
snext = strchr (s, ',');
if (snext == NULL)
len = strlen (s);
else
{
len = snext - s;
++snext;
}
#define PARSE_FLAG(fname,fval) \
else if (len == (int) sizeof fname - 1 && strncasecmp (fname, s, len) == 0) \
ret |= fval
#define PARSE_OTHER(fname,fval) \
else if (len >= (int) sizeof fname && strncasecmp (fname, s, sizeof fname - 1) == 0) \
fval = strndup (s + sizeof fname - 1, len - sizeof fname + 1)
if (0) ;
PARSE_FLAG ("local", BSF_LOCAL);
PARSE_FLAG ("global", BSF_GLOBAL);
PARSE_FLAG ("export", BSF_EXPORT);
PARSE_FLAG ("debug", BSF_DEBUGGING);
PARSE_FLAG ("function", BSF_FUNCTION);
PARSE_FLAG ("weak", BSF_WEAK);
PARSE_FLAG ("section", BSF_SECTION_SYM);
PARSE_FLAG ("constructor", BSF_CONSTRUCTOR);
PARSE_FLAG ("warning", BSF_WARNING);
PARSE_FLAG ("indirect", BSF_INDIRECT);
PARSE_FLAG ("file", BSF_FILE);
PARSE_FLAG ("object", BSF_OBJECT);
PARSE_FLAG ("synthetic", BSF_SYNTHETIC);
PARSE_FLAG ("indirect-function", BSF_GNU_INDIRECT_FUNCTION | BSF_FUNCTION);
PARSE_FLAG ("unique-object", BSF_GNU_UNIQUE | BSF_OBJECT);
PARSE_OTHER ("before=", *other);
#undef PARSE_FLAG
#undef PARSE_OTHER
else
{
char *copy;
copy = (char *) xmalloc (len + 1);
strncpy (copy, s, len);
copy[len] = '\0';
non_fatal (_("unrecognized symbol flag `%s'"), copy);
fatal (_("supported flags: %s"),
"local, global, export, debug, function, weak, section, "
"constructor, warning, indirect, file, object, synthetic, "
"indirect-function, unique-object, before=<othersym>");
}
s = snext;
}
while (s != NULL);
return ret;
}
/* Find and optionally add an entry in the change_sections list.
We need to be careful in how we match section names because of the support
@ -1213,6 +1300,49 @@ is_hidden_symbol (asymbol *sym)
return FALSE;
}
static bfd_boolean
need_sym_before (struct addsym_node **node, const char *sym)
{
int count;
struct addsym_node *ptr = add_sym_list;
/* 'othersym' symbols are at the front of the list. */
for (count = 0; count < add_symbols; count++)
{
if (!ptr->othersym)
break;
else if (strcmp (ptr->othersym, sym) == 0)
{
free (ptr->othersym);
ptr->othersym = ""; /* Empty name is hopefully never a valid symbol name. */
*node = ptr;
return TRUE;
}
ptr = ptr->next;
}
return FALSE;
}
static asymbol *
create_new_symbol (struct addsym_node *ptr, bfd *obfd)
{
asymbol *sym = bfd_make_empty_symbol(obfd);
bfd_asymbol_name(sym) = ptr->symdef;
sym->value = ptr->symval;
sym->flags = ptr->flags;
if (ptr->section)
{
asection *sec = bfd_get_section_by_name (obfd, ptr->section);
if (!sec)
fatal (_("Section %s not found"), ptr->section);
sym->section = sec;
}
else
sym->section = bfd_abs_section_ptr;
return sym;
}
/* Choose which symbol entries to copy; put the result in OSYMS.
We don't copy in place, because that confuses the relocs.
Return the number of symbols to print. */
@ -1238,6 +1368,14 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
undefined = bfd_is_und_section (bfd_get_section (sym));
if (add_sym_list)
{
struct addsym_node *ptr;
if (need_sym_before (&ptr, name))
to[dst_count++] = create_new_symbol (ptr, obfd);
}
if (redefine_sym_list)
{
char *old_name, *new_name;
@ -1394,6 +1532,23 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
to[dst_count++] = sym;
}
}
if (add_sym_list)
{
struct addsym_node *ptr = add_sym_list;
for (src_count = 0; src_count < add_symbols; src_count++)
{
if (ptr->othersym)
{
if (strcmp (ptr->othersym, ""))
fatal (_("'before=%s' not found"), ptr->othersym);
}
else
to[dst_count++] = create_new_symbol (ptr, obfd);
ptr = ptr->next;
}
}
to[dst_count] = NULL;
@ -2179,7 +2334,8 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
|| change_leading_char
|| remove_leading_char
|| redefine_sym_list
|| weaken)
|| weaken
|| add_symbols)
{
/* Mark symbols used in output relocations so that they
are kept, even if they are local labels or static symbols.
@ -2193,7 +2349,7 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
bfd_map_over_sections (ibfd,
mark_symbols_used_in_relocations,
isympp);
osympp = (asymbol **) xmalloc ((symcount + 1) * sizeof (asymbol *));
osympp = (asymbol **) xmalloc ((symcount + add_symbols + 1) * sizeof (asymbol *));
symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
}
@ -3920,6 +4076,53 @@ copy_main (int argc, char *argv[])
"--dump-section");
break;
case OPTION_ADD_SYMBOL:
{
char *s, *t;
struct addsym_node *newsym = xmalloc (sizeof *newsym);
newsym->next = NULL;
s = strchr (optarg, '=');
if (s == NULL)
fatal (_("bad format for %s"), "--add-symbol");
t = strchr (s + 1, ':');
newsym->symdef = strndup (optarg, s - optarg);
if (t)
{
newsym->section = strndup (s + 1, t - (s + 1));
newsym->symval = strtol (t + 1, NULL, 0);
}
else
{
newsym->section = NULL;
newsym->symval = strtol (s + 1, NULL, 0);
t = s;
}
t = strchr (t + 1, ',');
if (t)
newsym->flags = parse_symflags (t+1, &newsym->othersym);
else
newsym->flags = BSF_GLOBAL;
/* Keep 'othersym' symbols at the front of the list. */
if (newsym->othersym)
{
newsym->next = add_sym_list;
if (!add_sym_list)
add_sym_tail = &newsym->next;
add_sym_list = newsym;
}
else
{
*add_sym_tail = newsym;
add_sym_tail = &newsym->next;
}
add_symbols++;
}
break;
case OPTION_CHANGE_START:
change_start = parse_vma (optarg, "--change-start");
break;

6
binutils/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2015-10-21 Ronald Hoogenbllon <rhoogenboom@irdeto.com>
PR binutils/19104
* binutils-all/add-symbol.d: New test.
* binutils-all/objcopy.exp: Run the new test.
2015-10-15 Alan Modra <amodra@gmail.com>
* binutils-all/objcopy.exp: Delete trailing whitespace. Use

16
binutils/testsuite/binutils-all/add-symbol.d Normal file
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@ -0,0 +1,16 @@
#PROG: objcopy
#name: objcopy add-symbol
#source: symbols.s
#objcopy: --add-symbol NEW=0x1234 --add-symbol NEW_DATA=.data:0x4321,local
#objdump: --syms
# MIPS targets swap the order of the symbols in the output.
#not-target: mips-*-* tx39-*-*
.*: +file format .*
SYMBOL TABLE:
#...
0+04321 l[ ]+.data[ ]+0+00 NEW_DATA
#...
0+01234 g[ ]+\*ABS\*[ ]+0+00 NEW
#pass

1
binutils/testsuite/binutils-all/objcopy.exp
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@ -1097,6 +1097,7 @@ if [is_elf_format] {
run_dump_test "testranges-ia64"
run_dump_test "add-section"
run_dump_test "add-symbol"
run_dump_test "add-empty-section"
run_dump_test "exclude-1a"