Fix handling of __ehdr_start when it cannot be defined.
authorCary Coutant <ccoutant@google.com>
Wed, 2 Apr 2014 21:21:14 +0000 (14:21 -0700)
committerCary Coutant <ccoutant@google.com>
Fri, 2 May 2014 23:33:43 +0000 (16:33 -0700)
commitd1bddd3c4b9c17736bf6c59aa336670a589ca844
tree22accc61c3d63aa3cf79facc32915548d0ad9c69
parent30a1e6cc7750ce016ea70afa795c0764d07d21ae
Fix handling of __ehdr_start when it cannot be defined.

2014-05-02  Cary Coutant  <ccoutant@google.com>

* defstd.cc (in_segment): Define __ehdr_start here...
* layout.cc (Layout::finalize): ...Instead of here.  Set the
output segment when known.
* resolve.cc (Symbol::override_base_with_special): Remember
the original binding.
* symtab.cc (Symbol::set_output_segment): New function.
(Symbol::set_undefined): New function.
* symtab.h (Symbol::is_weak_undefined): Check original undef
binding.
(Symbol::is_strong_undefined): New function.
(Symbol::set_output_segment): New function.
(Symbol::set_undefined): New function.
* target-reloc.h (is_strong_undefined): Remove.
(issue_undefined_symbol_error): Call Symbol::is_weak_undefined.
Check for hidden undefs.
(relocate_section): Call Symbol::is_strong_undefined.

* testsuite/Makefile.am (ehdr_start_test_1)
(ehdr_start_test_2, ehdr_start_test_3)
(ehdr_start_test_4, ehdr_start_test_5): New test cases.
* testsuite/Makefile.in: Regenerate.
* testsuite/ehdr_start_def.cc: New source file.
* testsuite/ehdr_start_test.cc: New source file.
* testsuite/ehdr_start_test.t: New linker script.
* testsuite/ehdr_start_test_4.sh: New shell script.
13 files changed:
gold/ChangeLog
gold/defstd.cc
gold/layout.cc
gold/resolve.cc
gold/symtab.cc
gold/symtab.h
gold/target-reloc.h
gold/testsuite/Makefile.am
gold/testsuite/Makefile.in
gold/testsuite/ehdr_start_def.cc [new file with mode: 0644]
gold/testsuite/ehdr_start_test.cc [new file with mode: 0644]
gold/testsuite/ehdr_start_test.t [new file with mode: 0644]
gold/testsuite/ehdr_start_test_4.sh [new file with mode: 0755]