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Keep input SHF_GNU_RETAIN sections and strip output SHF_GNU_RETAIN for GNU/FreBSD ELFOSABIs.

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2020-12-14  H.J. Lu  <hjl.tools@gmail.com>
	    Cary Coutant  <ccoutant@gmail.com>

elfcpp/
	PR gold/27039
	* elfcpp.h (SHF): Add SHF_GNU_RETAIN.

gold/
    	PR gold/27039
	* layout.cc (Layout::layout): Strip SHF_GNU_RETAIN.
	* object.cc (Sized_relobj_file::Sized_relobj_file): Initialize osabi_.
	(Sized_relobj_file::do_layout): Keep SHF_GNU_RETAIN sections for
	GNU/FreBSD ELFOSABIs.
	* object.h (Osabi) New class.
	(Sized_relobj_file): Add osabi() and osabi_.
	* testsuite/Makefile.am (check_SCRIPTS): Add retain.sh.
	(check_DATA): Add retain_1.out retain_2.out.
	(MOSTLYCLEANFILES): Add retain_1 retain_2.
	(retain_1.out): New target.
	(retain_1): Likewise.
	(retain_1.o): Likewise.
	(retain_2.out): Likewise.
	(retain_2): Likewise.
	(retain_2.o): Likewise.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/retain.sh: New file.
	* testsuite/retain_1.s: Likewise.
	* testsuite/retain_2.s: Likewise.
This commit is contained in:
Cary Coutant 2020-12-14 15:46:47 -08:00
parent 8cd6d968de
commit ff4bc37d77
9 changed files with 294 additions and 20 deletions
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elfcpp/elfcpp.h
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@ -438,6 +438,7 @@ enum SHF
SHF_TLS = 0x400,
SHF_COMPRESSED = 0x800,
SHF_MASKOS = 0x0ff00000,
SHF_GNU_RETAIN = 0x200000,
SHF_MASKPROC = 0xf0000000,
// Indicates this section requires ordering in relation to