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authorCary Coutant <ccoutant@google.com>2015-03-09 10:10:29 -0700
committerCary Coutant <ccoutant@google.com>2015-03-09 10:12:06 -0700
commite16631979e847a6b39db3435bea7708b9f34b36d (patch)
tree81496b855792790e6ebe28028a07670e26737e53 /gold/layout.h
parent9a9df97001814c87929826e6538762f3be07c4a4 (diff)
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Fix failure in exception_static_test.
Because the __EH_FRAME_BEGIN__ symbol is provided in an empty .eh_frame section in crtbeginT.o, if crt1.o has a non-empty .eh_frame section, we place all optimized .eh_frame sections into the output section ahead of the __EH_FRAME_BEGIN__ symbol, which breaks EH for statically-linked binaries. This patch fixes the problem by delaying the attachment of the optimized .eh_frame sections to the output section until we see the end marker section (or to the end of pass 1 if we never see an end marker). gold/ PR gold/14675 * ehframe.cc (Eh_frame::add_ehframe_input_section): Change return type; return enum indicating whether .eh_frame section is empty, optimizable, unrecognized, or an end marker. Adjust explicit instantiations. * ehframe.h (Eh_frame::Eh_frame_section_disposition): New enum type. (Eh_frame::add_ehframe_input_section): Change return type. * gold.cc (queue_middle_tasks): Call Layout::finalize_eh_frame_section. * layout.cc (Layout::layout_eh_frame): Don't add optimized sections to the .eh_frame output section until we see the end marker. (Layout::finalize_eh_frame_section): New. * layout.h: (Layout::finalize_eh_frame_section): New.
Diffstat (limited to 'gold/layout.h')
-rw-r--r--gold/layout.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/gold/layout.h b/gold/layout.h
index aec0c53..9039ee8 100644
--- a/gold/layout.h
+++ b/gold/layout.h
@@ -635,6 +635,12 @@ class Layout
unsigned int reloc_shndx, unsigned int reloc_type,
off_t* offset);
+ // After processing all input files, we call this to make sure that
+ // the optimized .eh_frame sections have been added to the output
+ // section.
+ void
+ finalize_eh_frame_section();
+
// Add .eh_frame information for a PLT. The FDE must start with a
// 4-byte PC-relative reference to the start of the PLT, followed by
// a 4-byte size of PLT.