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Add -z bndplt support (for Intel MPX).

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gold/
	PR gold/17643
	* options.h (-z bndplt): New option.
	* x86_64.cc (Output_data_plt_x86_64::regular_count): New method.
	(Output_data_plt_x86_64::address_for_global): Move implementation into
	virtual method.
	(Output_data_plt_x86_64::address_for_local): Likewise.
	(Output_data_plt_x86_64::got): New method.
	(Output_data_plt_x86_64::got_plt): New method.
	(Output_data_plt_x86_64::got_irelative): New method.
	(Output_data_plt_x86_64::do_address_for_global): New virtual method.
	(Output_data_plt_x86_64::do_address_for_local): New virtual method.
	(class Output_data_plt_x86_64_bnd): New class.
	(Target_x86_64::do_make_data_plt): Move out of line and specialize
	for each size (both overloads).
	(Output_data_plt_x86_64::set_final_data_size): Cosmetic changes.
	* testsuite/Makefile.am (bnd_plt_1): New test case.
	(bnd_ifunc_1): New test case.
	(bnd_ifunc_2): New test case.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/bnd_ifunc_1.s: New source file.
	* testsuite/bnd_ifunc_1.sh: New shell script.
	* testsuite/bnd_ifunc_2.s: New source file.
	* testsuite/bnd_ifunc_2.sh: New shell script.
	* testsuite/bnd_plt_1.s: New source file.
	* testsuite/bnd_plt_1.sh: New shell script.
This commit is contained in:
Cary Coutant
2016-12-16 19:17:38 -08:00
parent c4d5a76223
commit 7a0c0a1475
11 changed files with 788 additions and 25 deletions
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3
gold/options.h
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@@ -1403,6 +1403,9 @@ class General_options
// The -z options.
DEFINE_bool(bndplt, options::DASH_Z, '\0', false,
N_("(x86-64 only) Generate a BND PLT for Intel MPX"),
N_("Generate a regular PLT"));
DEFINE_bool(combreloc, options::DASH_Z, '\0', true,
N_("Sort dynamic relocs"),
N_("Do not sort dynamic relocs"));