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Added --prefix-symbols <prefix> option to rename all symbols by adding the

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given prefix to the begining of the symbol name. This is useful to provide
name space seperation regardless of how the object file was created. Added
--prefix-sections <prefix> and --prefix-alloc-sections <prefix> options to
rename all sections (or all sections with the alloc flag set) by adding the
given prefix to the begining of the symbol name.
This commit is contained in:
Nick Clifton 2002-12-13 13:19:44 +00:00
parent 4024f1e1c5
commit d7fb0dd217
4 changed files with 144 additions and 50 deletions
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12
binutils/ChangeLog
View file

@ -1,3 +1,15 @@
2002-12-15 Nick Kelsey <nickk@ubicom.com>
* objcopy.c: Add --prefix-symbols=<prefix> option to rename all
symbols by adding the given prefix to the begining of the symbol
name. This is useful to provide name space seperation regardless
of how the object file was created. Added --prefix-sections=
<prefix> and --prefix-alloc-sections=<prefix> options to rename all
sections (or all sections with the alloc flag set) by adding the given
prefix to the begining of the symbol name.
* NEWS: Mention this new feature.
* doc/binutils.texi: Document this new feature.
2002-12-13 Alan Modra <amodra@bigpond.net.au>
* dlltool.c (mcore_elf_gen_out_file): Replace all occurrences of

3
binutils/NEWS
View file

@ -1,5 +1,8 @@
-*- text -*-
* Added --prefix-symbols=<text>, --prefix-sections=<text> and
--prefix-alloc-sections=<text> to objcopy.
* readelf can handle the extensions to the DWARF2 spec used by the Unified
Parallel C compiler.

13
binutils/doc/binutils.texi
View file

@ -960,6 +960,9 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}]
[@option{--localize-symbols=}@var{filename}]
[@option{--weaken-symbols=}@var{filename}]
[@option{--alt-machine-code=@var{index}}]
[@option{--prefix-symbols=@var{string}]
[@option{--prefix-sections=@var{string}]
[@option{--prefix-alloc-sections=@var{string}]
[@option{-v}|@option{--verbose}]
[@option{-V}|@option{--version}]
[@option{--help}]
@ -1319,6 +1322,16 @@ a machine is assigned an official code and the tool-chain adopts the
new code, but other applications still depend on the original code
being used.
@item --prefix-symbols=@var{string}
Prefix all symbols in the output file with @var{string}.
@item --prefix-sections=@var{string}
Prefix all section names in the output file with @var{string}.
@item --prefix-alloc-sections=@var{string}
Prefix all the names of all allocated sections in the output file with
@var{string}.
@item -V
@itemx --version
Show the version number of @command{objcopy}.

166
binutils/objcopy.c
View file

@ -238,6 +238,11 @@ static struct redefine_node *redefine_sym_list = NULL;
/* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
static bfd_boolean weaken = FALSE;
/* Prefix symbols/sections. */
static char *prefix_symbols_string = 0;
static char *prefix_sections_string = 0;
static char *prefix_alloc_sections_string = 0;
/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
#define OPTION_ADD_SECTION 150
@ -267,6 +272,9 @@ static bfd_boolean weaken = FALSE;
#define OPTION_WEAKEN_SYMBOLS (OPTION_KEEPGLOBAL_SYMBOLS + 1)
#define OPTION_RENAME_SECTION (OPTION_WEAKEN_SYMBOLS + 1)
#define OPTION_ALT_MACH_CODE (OPTION_RENAME_SECTION + 1)
#define OPTION_PREFIX_SYMBOLS (OPTION_ALT_MACH_CODE + 1)
#define OPTION_PREFIX_SECTIONS (OPTION_PREFIX_SYMBOLS + 1)
#define OPTION_PREFIX_ALLOC_SECTIONS (OPTION_PREFIX_SECTIONS + 1)
/* Options to handle if running as "strip". */
@ -303,6 +311,7 @@ static struct option copy_options[] =
{"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'},
{"byte", required_argument, 0, 'b'},
{"change-addresses", required_argument, 0, OPTION_CHANGE_ADDRESSES},
@ -315,45 +324,47 @@ static struct option copy_options[] =
{"debugging", no_argument, 0, OPTION_DEBUGGING},
{"discard-all", no_argument, 0, 'x'},
{"discard-locals", no_argument, 0, 'X'},
{"only-section", required_argument, 0, 'j'},
{"format", required_argument, 0, 'F'}, /* Obsolete */
{"gap-fill", required_argument, 0, OPTION_GAP_FILL},
{"help", no_argument, 0, 'h'},
{"input-format", required_argument, 0, 'I'}, /* Obsolete */
{"input-target", required_argument, 0, 'I'},
{"interleave", required_argument, 0, 'i'},
{"keep-global-symbol", required_argument, 0, 'G'},
{"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
{"keep-symbol", required_argument, 0, 'K'},
{"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS},
{"localize-symbol", required_argument, 0, 'L'},
{"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
{"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
{"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
{"only-section", required_argument, 0, 'j'},
{"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},
{"preserve-dates", no_argument, 0, 'p'},
{"localize-symbol", required_argument, 0, 'L'},
{"keep-global-symbol", required_argument, 0, 'G'},
{"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
{"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR},
{"remove-section", required_argument, 0, 'R'},
{"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
{"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},
{"strip-all", no_argument, 0, 'S'},
{"strip-debug", no_argument, 0, 'g'},
{"strip-unneeded", no_argument, 0, OPTION_STRIP_UNNEEDED},
{"strip-symbol", required_argument, 0, 'N'},
{"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
{"target", required_argument, 0, 'F'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"weaken", no_argument, 0, OPTION_WEAKEN},
{"weaken-symbol", required_argument, 0, 'W'},
{"redefine-sym", required_argument, 0, OPTION_REDEFINE_SYM},
{"srec-len", required_argument, 0, OPTION_SREC_LEN},
{"srec-forceS3", no_argument, 0, OPTION_SREC_FORCES3},
{"keep-symbols", required_argument, 0, OPTION_KEEP_SYMBOLS},
{"strip-symbols", required_argument, 0, OPTION_STRIP_SYMBOLS},
{"keep-global-symbols", required_argument, 0, OPTION_KEEPGLOBAL_SYMBOLS},
{"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
{"weaken-symbols", required_argument, 0, OPTION_WEAKEN_SYMBOLS},
{"alt-machine-code", required_argument, 0, OPTION_ALT_MACH_CODE},
{0, no_argument, 0, 0}
};
@ -438,6 +449,11 @@ copy_usage (stream, exit_status)
--keep-global-symbols <file> -G for all symbols listed in <file>\n\
--weaken-symbols <file> -W for all symbols listed in <file>\n\
--alt-machine-code <index> Use alternate machine code for output\n\
--prefix-symbols <prefix> Add <prefix> to start of every symbol name\n\
--prefix-sections <prefix> Add <prefix> to start of every section name\n\
--prefix-alloc-sections <prefix>\n\
Add <prefix> to start of every allocatable\n\
section name\n\
-v --verbose List all object files modified\n\
-V --version Display this program's version number\n\
-h --help Display this output\n\
@ -768,50 +784,70 @@ filter_symbols (abfd, obfd, osyms, isyms, symcount)
{
asymbol *sym = from[src_count];
flagword flags = sym->flags;
const char *name = bfd_asymbol_name (sym);
char *name = (char *) bfd_asymbol_name (sym);
int keep;
bfd_boolean undefined;
if (redefine_sym_list)
{
const char *old_name, *new_name;
old_name = bfd_asymbol_name (sym);
new_name = lookup_sym_redefinition (old_name);
name = bfd_asymbol_name (sym) = new_name;
}
if (change_leading_char
&& (bfd_get_symbol_leading_char (abfd)
!= bfd_get_symbol_leading_char (obfd))
&& (bfd_get_symbol_leading_char (abfd) == '\0'
|| (name[0] == bfd_get_symbol_leading_char (abfd))))
{
if (bfd_get_symbol_leading_char (obfd) == '\0')
name = bfd_asymbol_name (sym) = name + 1;
else
{
char *n;
n = xmalloc (strlen (name) + 2);
n[0] = bfd_get_symbol_leading_char (obfd);
if (bfd_get_symbol_leading_char (abfd) == '\0')
strcpy (n + 1, name);
else
strcpy (n + 1, name + 1);
name = bfd_asymbol_name (sym) = n;
}
}
bfd_boolean rem_leading_char;
bfd_boolean add_leading_char;
undefined = bfd_is_und_section (bfd_get_section (sym));
if (remove_leading_char
&& ((flags & BSF_GLOBAL) != 0
|| (flags & BSF_WEAK) != 0
|| undefined
|| bfd_is_com_section (bfd_get_section (sym)))
&& name[0] == bfd_get_symbol_leading_char (abfd))
name = bfd_asymbol_name (sym) = name + 1;
if (redefine_sym_list)
{
char *old_name, *new_name;
old_name = (char *) bfd_asymbol_name (sym);
new_name = (char *) lookup_sym_redefinition (old_name);
name = (char *) bfd_asymbol_name (sym) = new_name;
}
/* Check if we will remove the current leading character. */
rem_leading_char =
(name[0] == bfd_get_symbol_leading_char (abfd))
&& (change_leading_char
|| (remove_leading_char
&& ((flags & (BSF_GLOBAL | BSF_WEAK)) != 0
|| undefined
|| bfd_is_com_section (bfd_get_section (sym)))));
/* Check if we will add a new leading character. */
add_leading_char =
change_leading_char
&& (bfd_get_symbol_leading_char (obfd) != '\0')
&& (bfd_get_symbol_leading_char (abfd) == '\0'
|| (name[0] == bfd_get_symbol_leading_char (abfd)));
/* Short circuit for change_leading_char if we can do it in-place. */
if (rem_leading_char && add_leading_char && !prefix_symbols_string)
{
name[0] = bfd_get_symbol_leading_char (obfd);
bfd_asymbol_name (sym) = name;
rem_leading_char = FALSE;
add_leading_char = FALSE;
}
/* Remove leading char. */
if (rem_leading_char)
name = (char *) bfd_asymbol_name (sym) = name + 1;
/* Add new leading char and/or prefix. */
if (add_leading_char || prefix_symbols_string)
{
char *n, *ptr;
ptr = n = xmalloc (1 + strlen (prefix_symbols_string) + strlen (name) + 1);
if (add_leading_char)
*ptr++ = bfd_get_symbol_leading_char (obfd);
if (prefix_symbols_string)
{
strcpy (ptr, prefix_symbols_string);
ptr += strlen (prefix_symbols_string);
}
strcpy (ptr, name);
name = (char *) bfd_asymbol_name (sym) = n;
}
if (strip_symbols == STRIP_ALL)
keep = 0;
@ -1176,6 +1212,7 @@ copy_object (ibfd, obfd)
|| localize_specific_list != NULL
|| keepglobal_specific_list != NULL
|| weaken_specific_list != NULL
|| prefix_symbols_string
|| sections_removed
|| sections_copied
|| convert_debugging
@ -1599,6 +1636,7 @@ setup_section (ibfd, isection, obfdarg)
flagword flags;
const char *err;
const char * name;
char *prefix = NULL;
if ((bfd_get_section_flags (ibfd, isection) & SEC_DEBUGGING) != 0
&& (strip_symbols == STRIP_DEBUG
@ -1620,6 +1658,22 @@ setup_section (ibfd, isection, obfdarg)
/* Get the, possibly new, name of the output section. */
name = find_section_rename (ibfd, isection, & flags);
/* Prefix sections. */
if ((prefix_alloc_sections_string) && (bfd_get_section_flags (ibfd, isection) & SEC_ALLOC))
prefix = prefix_alloc_sections_string;
else if (prefix_sections_string)
prefix = prefix_sections_string;
if (prefix)
{
char *n;
n = xmalloc (strlen (prefix) + strlen (name) + 1);
strcpy (n, prefix);
strcat (n, name);
name = n;
}
osection = bfd_make_section_anyway (obfd, name);
if (osection == NULL)
@ -2576,6 +2630,18 @@ copy_main (argc, argv)
fatal (_("alternate machine code index must be positive"));
break;
case OPTION_PREFIX_SYMBOLS:
prefix_symbols_string = optarg;
break;
case OPTION_PREFIX_SECTIONS:
prefix_sections_string = optarg;
break;
case OPTION_PREFIX_ALLOC_SECTIONS:
prefix_alloc_sections_string = optarg;
break;
case 0:
break; /* we've been given a long option */