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| author | Cary Coutant <ccoutant@google.com> | 2014-02-05 14:01:52 -0800 |
|---|---|---|
| committer | Cary Coutant <ccoutant@google.com> | 2014-02-05 18:01:47 -0800 |
| commit | fd834e57ffce2f5dbe3443f034e68cebd63ee89a (patch) | |
| tree | 6a5324243f95c8d47ee76b928cb3ca02076e184e /gold/options.h | |
| parent | ee1e2d4fb692736c754b42b69eb88c1f436c5f15 (diff) | |
| download | gdb-fd834e57ffce2f5dbe3443f034e68cebd63ee89a.zip gdb-fd834e57ffce2f5dbe3443f034e68cebd63ee89a.tar.gz gdb-fd834e57ffce2f5dbe3443f034e68cebd63ee89a.tar.bz2 | |
Fix problems with the --dynamic-list option.
PR gold/13577 complains that even though symbols listed in
the --dynamic-list script are exported, they are still bound symbolically
if -Bsymbolic is also used. There are two underlying problems here.
First, -Bsymbolic should be overridden by --dynamic-list, since the
dynamic list provides an explicit list of symbols that are not bound
within the library, and if we go ahead and set DT_SYMBOLIC, then the
dynamic loader will bind it within the library anyway. Second, gold
did not properly identify the symbols listed in the file as preemptible.
PR gold/16530 complains that symbols listed in the --dynamic-list script
can still be garbage collected. I've fixed this by checking the symbols
as they're added to the symbol table. (Unlike the --export-dynamic-symbol
option, we can't iterate over the list, because the --dynamic-list script
can have wildcards in it.)
gold/
2014-02-05 Cary Coutant <ccoutant@google.com>
PR gold/13577
* options.cc (General_options::parse_dynamic_list):
Set have_dynamic_list_.
(General_options::General_options): Initialize have_dynamic_list_.
(General_options::finalize): Turn off -Bsymbolic and
-Bsymbolic-functions if --dynamic-list provided.
* options.h (General_options::have_dynamic_list): New function.
(General_options::have_dynamic_list_): New data member.
* symtab.h (Symbol::is_preemptible): Handle --dynamic-list
correctly.
PR gold/16530
* symtab.cc (Symbol_table::add_from_relobj): If symbol is named
in --dynamic-list, mark it.
* testsuite/Makefile.am (gc_dynamic_list_test.sh): New test case.
(dynamic_list_2): New test case.
* testsuite/Makefile.in: Regenerate.
* testsuite/dynamic_list_2.cc: New file.
* testsuite/dynamic_list_2.t: New file.
* testsuite/dynamic_list_lib1.cc: New file.
* testsuite/dynamic_list_lib2.cc: New file.
* testsuite/gc_dynamic_list_test.c: New file.
* testsuite/gc_dynamic_list_test.sh: New file.
* testsuite/gc_dynamic_list_test.t: New file.
Diffstat (limited to 'gold/options.h')
| -rw-r--r-- | gold/options.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gold/options.h b/gold/options.h index a2f5a88..da1ade9 100644 --- a/gold/options.h +++ b/gold/options.h @@ -1438,6 +1438,11 @@ class General_options in_dynamic_list(const char* symbol) const { return this->dynamic_list_.version_script_info()->symbol_is_local(symbol); } + // True if a --dynamic-list script was provided. + bool + have_dynamic_list() const + { return this->have_dynamic_list_; } + // Finalize the dynamic list. void finalize_dynamic_list() @@ -1591,6 +1596,8 @@ class General_options // script.cc, we store this as a Script_options object, even though // we only use a single Version_tree from it. Script_options dynamic_list_; + // Whether a --dynamic-list file was provided. + bool have_dynamic_list_; // The incremental linking mode. Incremental_mode incremental_mode_; // The disposition given by the --incremental-changed, |