[PATCH] bfd: Display symbol version for nm -D
H.J. Lu
hjl.tools@gmail.com
Sun Mar 22 12:29:47 GMT 2020
Extend _bfd_elf_get_symbol_version_string for nm -D to display symbol
version. _bfd_elf_get_symbol_version_name is added to avoid updating
all XXX_get_symbol_version_string functions.
bfd/
PR binutils/25708
* elf-bfd.h (_bfd_elf_get_symbol_version_name): New.
* elf.c (_bfd_elf_get_symbol_version_name): New function. Based
on the previous _bfd_elf_get_symbol_version_string.
(_bfd_elf_get_symbol_version_string): Use it.
binutils/
PR binutils/25708
* nm.c (SYM_NAME): Removed.
(print_symname): Add a pointer to struct extended_symbol_info
argument. Call _bfd_elf_get_symbol_version_name to get symbol
version.
(print_symdef_entry): Pass NULL to print_symname.
(print_symbol_info_bsd): Update call to print_symname.
(print_symbol_info_sysv): Likewise.
(print_symbol_info_posix): Likewise.
ld/
PR binutils/25708
* testsuite/ld-elf/pr25707.d: New file.
---
bfd/elf-bfd.h | 2 ++
bfd/elf.c | 27 +++++++++++++++++++++------
binutils/nm.c | 26 ++++++++++++++++++++------
ld/testsuite/ld-elf/pr25707.d | 9 +++++++++
4 files changed, 52 insertions(+), 12 deletions(-)
create mode 100644 ld/testsuite/ld-elf/pr25707.d
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index d4ac5152df..c546b583b8 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -2078,6 +2078,8 @@ extern bfd_boolean _bfd_elf_print_private_bfd_data
(bfd *, void *);
const char * _bfd_elf_get_symbol_version_string
(bfd *, asymbol *, bfd_boolean *);
+const char * _bfd_elf_get_symbol_version_name
+ (bfd *, asymbol *, bfd_boolean, bfd_boolean *);
extern void bfd_elf_print_symbol
(bfd *, void *, asymbol *, bfd_print_symbol_type);
diff --git a/bfd/elf.c b/bfd/elf.c
index 975eeb06b8..1004809e45 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -1883,11 +1883,13 @@ _bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
return FALSE;
}
-/* Get version string. */
+/* Get version name. If BASE_P is TRUE, return "Base" for VER_FLG_BASE
+ and return symbol version for symbol version itself. */
const char *
-_bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
- bfd_boolean *hidden)
+_bfd_elf_get_symbol_version_name (bfd *abfd, asymbol *symbol,
+ bfd_boolean base_p,
+ bfd_boolean *hidden)
{
const char *version_string = NULL;
if (elf_dynversym (abfd) != 0
@@ -1904,10 +1906,14 @@ _bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
&& (vernum > elf_tdata (abfd)->cverdefs
|| (elf_tdata (abfd)->verdef[0].vd_flags
== VER_FLG_BASE)))
- version_string = "Base";
+ version_string = base_p ? "Base" : "";
else if (vernum <= elf_tdata (abfd)->cverdefs)
- version_string =
- elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
+ {
+ const char *nodename
+ = elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
+ version_string = ((base_p || strcmp (symbol->name, nodename))
+ ? nodename : "");
+ }
else
{
Elf_Internal_Verneed *t;
@@ -1933,6 +1939,15 @@ _bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
return version_string;
}
+/* Get version string. */
+
+const char *
+_bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
+ bfd_boolean *hidden)
+{
+ return _bfd_elf_get_symbol_version_name (abfd, symbol, TRUE, hidden);
+}
+
/* Display ELF-specific fields of a symbol. */
void
diff --git a/binutils/nm.c b/binutils/nm.c
index 0ee3f88386..0e475f8006 100644
--- a/binutils/nm.c
+++ b/binutils/nm.c
@@ -67,7 +67,6 @@ struct extended_symbol_info
coff_symbol_type *coffinfo;
/* FIXME: We should add more fields for Type, Line, Section. */
};
-#define SYM_NAME(sym) (sym->sinfo->name)
#define SYM_VALUE(sym) (sym->sinfo->value)
#define SYM_TYPE(sym) (sym->sinfo->type)
#define SYM_STAB_NAME(sym) (sym->sinfo->stab_name)
@@ -394,8 +393,11 @@ get_coff_symbol_type (const struct internal_syment *sym)
demangling it if requested. */
static void
-print_symname (const char *form, const char *name, bfd *abfd)
+print_symname (const char *form, struct extended_symbol_info *info,
+ const char *name, bfd *abfd)
{
+ if (name == NULL)
+ name = info->sinfo->name;
if (do_demangle && *name)
{
char *res = bfd_demangle (abfd, name, demangle_flags);
@@ -409,6 +411,18 @@ print_symname (const char *form, const char *name, bfd *abfd)
}
printf (form, name);
+ if (info != NULL && info->elfinfo)
+ {
+ const char *version_string;
+ bfd_boolean hidden;
+
+ version_string
+ = _bfd_elf_get_symbol_version_name (abfd,
+ &info->elfinfo->symbol,
+ FALSE, &hidden);
+ if (version_string && version_string[0])
+ printf ("%s%s", hidden ? "@" : "@@", version_string);
+ }
}
static void
@@ -433,7 +447,7 @@ print_symdef_entry (bfd *abfd)
bfd_fatal ("bfd_get_elt_at_index");
if (thesym->name != (char *) NULL)
{
- print_symname ("%s", thesym->name, abfd);
+ print_symname ("%s", NULL, thesym->name, abfd);
printf (" in %s\n", bfd_get_filename (elt));
}
}
@@ -1606,13 +1620,13 @@ print_symbol_info_bsd (struct extended_symbol_info *info, bfd *abfd)
printf (desc_format, SYM_STAB_DESC (info));
printf (" %5s", SYM_STAB_NAME (info));
}
- print_symname (" %s", SYM_NAME (info), abfd);
+ print_symname (" %s", info, NULL, abfd);
}
static void
print_symbol_info_sysv (struct extended_symbol_info *info, bfd *abfd)
{
- print_symname ("%-20s|", SYM_NAME (info), abfd);
+ print_symname ("%-20s|", info, NULL, abfd);
if (bfd_is_undefined_symclass (SYM_TYPE (info)))
{
@@ -1667,7 +1681,7 @@ print_symbol_info_sysv (struct extended_symbol_info *info, bfd *abfd)
static void
print_symbol_info_posix (struct extended_symbol_info *info, bfd *abfd)
{
- print_symname ("%s ", SYM_NAME (info), abfd);
+ print_symname ("%s ", info, NULL, abfd);
printf ("%c ", SYM_TYPE (info));
if (bfd_is_undefined_symclass (SYM_TYPE (info)))
diff --git a/ld/testsuite/ld-elf/pr25707.d b/ld/testsuite/ld-elf/pr25707.d
new file mode 100644
index 0000000000..e487d227b3
--- /dev/null
+++ b/ld/testsuite/ld-elf/pr25707.d
@@ -0,0 +1,9 @@
+#source: pr13195.s
+#ld: -shared -version-script pr13195.t
+#nm: -D
+#target: *-*-linux* *-*-gnu* arm*-*-uclinuxfdpiceabi
+
+#..
+0+ A VERS_2.0
+[0-9a-f]+ T foo@@VERS_2.0
+#pass
--
2.25.1
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