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| author | Martin Liska <mliska@suse.cz> | 2019-07-04 16:39:08 +0200 |
|---|---|---|
| committer | Martin Liska <mliska@suse.cz> | 2019-07-29 10:11:44 +0200 |
| commit | cc5277b173701364c10204f316db28198f2c683b (patch) | |
| tree | a8f2b4749dc337a6e2b265785fe818c247329371 /gold/object.cc | |
| parent | ac50aea1311b01c745afc4dba102a8d20d0eea6e (diff) | |
| download | fsf-binutils-gdb-cc5277b173701364c10204f316db28198f2c683b.zip fsf-binutils-gdb-cc5277b173701364c10204f316db28198f2c683b.tar.gz fsf-binutils-gdb-cc5277b173701364c10204f316db28198f2c683b.tar.bz2 | |
Support .gnu.lto_.lto section in ELF files (PR 24768).
bfd/ChangeLog:
2019-07-22 Martin Liska <mliska@suse.cz>
PR 24768
* archive.c (_bfd_compute_and_write_armap): Come up with
report_plugin_err variable.
* bfd-in2.h (struct bfd): Add lto_slim_object flag.
* elf.c (struct lto_section): New.
(_bfd_elf_make_section_from_shdr): Parse content of
.gnu_lto_.lto section.
* elflink.c: Report error for a missing LTO plugin.
* linker.c (_bfd_generic_link_add_one_symbol): Likewise.
binutils/ChangeLog:
2019-07-22 Martin Liska <mliska@suse.cz>
PR 24768
* nm.c (filter_symbols): Set report_plugin_err if
error is reported.
(display_rel_file): Report error for a missing LTO plugin.
gold/ChangeLog:
2019-07-22 Martin Liska <mliska@suse.cz>
PR 24768
* layout.h (class Layout): Add is_lto_slim_object and
set_lto_slim_object.
* object.cc (struct lto_section): Add lto_slim_object_.
(big_endian>::do_layout): Parse content of
.gnu_lto_.lto section.
(big_endian>::do_add_symbols): Report error for a missing
LTO plugin.
Diffstat (limited to 'gold/object.cc')
| -rw-r--r-- | gold/object.cc | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/gold/object.cc b/gold/object.cc index 689448f..86c519a 100644 --- a/gold/object.cc +++ b/gold/object.cc @@ -1380,6 +1380,18 @@ Sized_relobj_file<size, big_endian>::layout_gnu_property_section( } } +// This a copy of lto_section defined in GCC (lto-streamer.h) + +struct lto_section +{ + int16_t major_version; + int16_t minor_version; + unsigned char slim_object; + + /* Flags is a private field that is not defined publicly. */ + uint16_t flags; +}; + // Lay out the input sections. We walk through the sections and check // whether they should be included in the link. If they should, we // pass them to the Layout object, which will return an output section @@ -1865,6 +1877,19 @@ Sized_relobj_file<size, big_endian>::do_layout(Symbol_table* symtab, debug_types_sections.push_back(i); } } + + /* GCC uses .gnu.lto_.lto.<some_hash> as a LTO bytecode information + section. */ + const char *lto_section_name = ".gnu.lto_.lto."; + if (strncmp (name, lto_section_name, strlen (lto_section_name)) == 0) + { + section_size_type contents_len; + const unsigned char* pcontents = this->section_contents(i, &contents_len, false); + struct lto_section lsection = *(const lto_section*)pcontents; + if (lsection.slim_object) + gold_info(_("%s: plugin needed to handle lto object"), + this->name().c_str()); + } } if (!is_pass_two) @@ -2083,7 +2108,7 @@ template<int size, bool big_endian> void Sized_relobj_file<size, big_endian>::do_add_symbols(Symbol_table* symtab, Read_symbols_data* sd, - Layout*) + Layout* layout) { if (sd->symbols == NULL) { @@ -2102,6 +2127,10 @@ Sized_relobj_file<size, big_endian>::do_add_symbols(Symbol_table* symtab, this->symbols_.resize(symcount); + if (layout->is_lto_slim_object ()) + gold_info(_("%s: plugin needed to handle lto object"), + this->name().c_str()); + const char* sym_names = reinterpret_cast<const char*>(sd->symbol_names->data()); symtab->add_from_relobj(this, |