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| author | Vivek Das Mohapatra <vivek@collabora.com> | 2020-12-14 17:25:55 +0000 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-12-15 18:45:24 +1030 |
| commit | 8a87b2791181eb7fc1533ffaeb95df8d87d41493 (patch) | |
| tree | 319ae3d0d3eb416a80f1b9b6a6799f6eed54b6c0 /gold | |
| parent | af3c233bdb68e23b64a7453c1a08b4437ecd65b3 (diff) | |
| download | fsf-binutils-gdb-8a87b2791181eb7fc1533ffaeb95df8d87d41493.zip fsf-binutils-gdb-8a87b2791181eb7fc1533ffaeb95df8d87d41493.tar.gz fsf-binutils-gdb-8a87b2791181eb7fc1533ffaeb95df8d87d41493.tar.bz2 | |
Implement and document -z unique / -z nounique handling in gold
* layout.cc (Layout::finish_dynamic_section): Set DF_GNU_1_UNIQUE.
* options.h (class General_options): Handle -z unique, -z nounique.
Diffstat (limited to 'gold')
| -rw-r--r-- | gold/ChangeLog | 6 | ||||
| -rw-r--r-- | gold/layout.cc | 6 | ||||
| -rw-r--r-- | gold/options.h | 3 |
3 files changed, 15 insertions, 0 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index 533736b..d1c0ca7 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,9 @@ +2020-12-15 Vivek Das Mohapatra <vivek@collabora.com> + + Implement -z unique / -z nounique options. + * layout.cc (Layout::finish_dynamic_section): Set DF_GNU_1_UNIQUE. + * options.h (class General_options): Handle -z unique, -z nounique. + 2020-12-13 Cary Coutant <ccoutant@gmail.com> PR gold/23539 diff --git a/gold/layout.cc b/gold/layout.cc index dc88a9d..44664e2 100644 --- a/gold/layout.cc +++ b/gold/layout.cc @@ -5371,6 +5371,12 @@ Layout::finish_dynamic_section(const Input_objects* input_objects, flags |= elfcpp::DF_1_PIE; if (flags != 0) odyn->add_constant(elfcpp::DT_FLAGS_1, flags); + + flags = 0; + if (parameters->options().unique()) + flags |= elfcpp::DF_GNU_1_UNIQUE; + if (flags != 0) + odyn->add_constant(elfcpp::DT_GNU_FLAGS_1, flags); } // Set the size of the _DYNAMIC symbol table to be the size of the diff --git a/gold/options.h b/gold/options.h index 51d3614..111453b 100644 --- a/gold/options.h +++ b/gold/options.h @@ -1469,6 +1469,9 @@ class General_options DEFINE_bool(interpose, options::DASH_Z, '\0', false, N_("Mark object to interpose all DSOs but executable"), NULL); + DEFINE_bool(unique, options::DASH_Z, '\0', false, + N_("Mark DSO to be loaded at most once, and only in the main namespace"), + N_("Do not mark the DSO as one to be loaded only in the main namespace")); DEFINE_bool_alias(lazy, now, options::DASH_Z, '\0', N_("Mark object for lazy runtime binding"), NULL, true); |