From cc5277b173701364c10204f316db28198f2c683b Mon Sep 17 00:00:00 2001 From: Martin Liska Date: Thu, 4 Jul 2019 16:39:08 +0200 Subject: Support .gnu.lto_.lto section in ELF files (PR 24768). bfd/ChangeLog: 2019-07-22 Martin Liska 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 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 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. --- binutils/nm.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'binutils/nm.c') diff --git a/binutils/nm.c b/binutils/nm.c index fd3f731..5d3d647 100644 --- a/binutils/nm.c +++ b/binutils/nm.c @@ -438,6 +438,10 @@ print_symdef_entry (bfd *abfd) } } + +/* True when we can report missing plugin error. */ +bfd_boolean report_plugin_err = TRUE; + /* Choose which symbol entries to print; compact them downward to get rid of the rest. Return the number of symbols to be printed. */ @@ -470,9 +474,13 @@ filter_symbols (bfd *abfd, bfd_boolean is_dynamic, void *minisyms, if (sym->name[0] == '_' && sym->name[1] == '_' - && strcmp (sym->name + (sym->name[2] == '_'), "__gnu_lto_slim") == 0) - non_fatal (_("%s: plugin needed to handle lto object"), - bfd_get_filename (abfd)); + && strcmp (sym->name + (sym->name[2] == '_'), "__gnu_lto_slim") == 0 + && report_plugin_err) + { + report_plugin_err = FALSE; + non_fatal (_("%s: plugin needed to handle lto object"), + bfd_get_filename (abfd)); + } if (undefined_only) keep = bfd_is_und_section (sym->section); @@ -1164,6 +1172,15 @@ display_rel_file (bfd *abfd, bfd *archive_bfd) } } + /* lto_slim_object is set to false when a bfd is loaded with a compiler + LTO plugin. */ + if (abfd->lto_slim_object) + { + report_plugin_err = FALSE; + non_fatal (_("%s: plugin needed to handle lto object"), + bfd_get_filename (abfd)); + } + /* Discard the symbols we don't want to print. It's OK to do this in place; we'll free the storage anyway (after printing). */ -- cgit v1.1