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Add the ability for nm to display symbol version information.

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PR binutils/20751
	* nm.c (with_symbol_versions): New local variable.
	(long_options): Add --with-symbol-versions.
	(usage): Mention --with-symbol-versions.
	(print_symbol): If with_symbol_versions is set then display the
	version information associated with the symbol.
	* NEWS: Mention the new feature.
	* doc/binutils.texi (nm): Document the new option.
	(objdump): Describe how symbol version information is displayed
	for dynamic symbol dumps.
	(readelf): Describe how symbol version information is displayed.
	* testsuite/binutils-all/nm.exp: Add a test of the new feature.
This commit is contained in:
Nick Clifton
2016-11-11 11:49:45 +00:00
parent 74f5402d08
commit df2c87b580
6 changed files with 99 additions and 2 deletions
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18
binutils/nm.c
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@@ -161,6 +161,7 @@ static int show_stats = 0; /* Show statistics. */
static int show_synthetic = 0; /* Display synthesized symbols too. */
static int line_numbers = 0; /* Print line numbers for symbols. */
static int allow_special_symbols = 0; /* Allow special symbols. */
static int with_symbol_versions = 0; /* Include symbol version information in the output. */
/* When to print the names of files. Not mutually exclusive in SYSV format. */
static int filename_per_file = 0; /* Once per file, on its own line. */
@@ -226,6 +227,7 @@ static struct option long_options[] =
{"defined-only", no_argument, &defined_only, 1},
{"undefined-only", no_argument, &undefined_only, 1},
{"version", no_argument, &show_version, 1},
{"with-symbol-versions", no_argument, &with_symbol_versions, 1},
{0, no_argument, 0, 0}
};
@@ -271,6 +273,7 @@ usage (FILE *stream, int status)
-t, --radix=RADIX Use RADIX for printing symbol values\n\
--target=BFDNAME Specify the target object format as BFDNAME\n\
-u, --undefined-only Display only undefined symbols\n\
--with-symbol-versions Display version strings after symbol names\n\
-X 32_64 (ignored)\n\
@FILE Read options from FILE\n\
-h, --help Display this information\n\
@@ -879,6 +882,21 @@ print_symbol (bfd * abfd,
format->print_symbol_info (&info, abfd);
if (with_symbol_versions)
{
const char * version_string = NULL;
bfd_boolean hidden = FALSE;
if ((sym->flags & BSF_SYNTHETIC) == 0)
version_string = bfd_get_symbol_version_string (abfd, sym, &hidden);
if (bfd_is_und_section (bfd_get_section (sym)))
hidden = TRUE;
if (version_string && *version_string != '\0')
printf (hidden ? "@%s" : "@@%s", version_string);
}
if (line_numbers)
{
static asymbol **syms;