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H.J. Lu 48580982ef x86: Support Intel Shadow Stack with SHSTK property 
To support Intel Shadow Stack (SHSTK) in Intel Control-flow Enforcement
Technology (CET) instructions:

https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-enforcement-technology-preview.pdf

 #define GNU_PROPERTY_X86_FEATURE_1_SHSTK (1U << 1)

is added to GNU program properties to indicate that all executable sections
are compatible with SHSTK where return address popped from shadow stack
always matches return address popped from normal stack.

GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on output only if it is set on all
relocatable inputs.

bfd/

	* elf32-i386.c (elf_i386_merge_gnu_properties): If info->shstk
	is set, turn on GNU_PROPERTY_X86_FEATURE_1_SHSTK.
	(elf_i386_link_setup_gnu_properties): If info->shstk is set,
	turn on GNU_PROPERTY_X86_FEATURE_1_IBT.
	* elf64-x86-64.c (elf_x86_64_merge_gnu_properties): If
	info->shstk is set, turn on GNU_PROPERTY_X86_FEATURE_1_SHSTK.
	(elf_x86_64_link_setup_gnu_properties): If info->shstk is set,
	turn on GNU_PROPERTY_X86_FEATURE_1_IBT.

binutils/

	* readelf.c (decode_x86_feature): Decode
	GNU_PROPERTY_X86_FEATURE_1_SHSTK.
	* testsuite/binutils-all/i386/shstk.d: New file.
	* testsuite/binutils-all/i386/shstk.s: Likewise.
	* testsuite/binutils-all/x86-64/shstk-x32.d: Likewise.
	* testsuite/binutils-all/x86-64/shstk.d: Likewise.
	* testsuite/binutils-all/x86-64/shstk.s: Likewise.

include/

	* bfdlink.h (bfd_link_info): Add shstk.
	* elf/common.h (GNU_PROPERTY_X86_FEATURE_1_SHSTK): New.

ld/

	* NEWS: Mention -z shstk and GNU_PROPERTY_X86_FEATURE_1_SHSTK.
	* emulparams/cet.sh (PARSE_AND_LIST_OPTIONS_CET): Add "-z shstk".
	(PARSE_AND_LIST_ARGS_CASE_Z_CET): Support "-z shstk".
	* ld.texinfo: Document -z shstk.
	* testsuite/ld-i386/i386.exp: Run SHSTK tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-i386/property-x86-shstk.s: New file.
	* testsuite/ld-i386/property-x86-shstk1a.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk1b.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk2.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk3a.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk3b.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk4.d: Likewise.
	* testsuite/ld-i386/property-x86-shstk5.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk.s: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk1a-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk1a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk1b-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk1b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk2-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk2.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk3a-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk3a.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk3b-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk3b.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk4-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk4.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk5-x32.d: Likewise.
	* testsuite/ld-x86-64/property-x86-shstk5.d: Likewise.
 		2017-06-22 05:50:31 -07:00
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aout Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
cgen Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
coff Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
elf x86: Support Intel Shadow Stack with SHSTK property 2017-06-22 05:50:31 -07:00
gdb update copyright year range in GDB files 2017-01-01 10:52:34 +04:00
mach-o Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
nlm Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
opcode [ARM] Rework Tag_CPU_arch build attribute value selection 2017-06-21 16:42:01 +01:00
som Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
vms Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
COPYING
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COPYING3
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ChangeLog x86: Support Intel Shadow Stack with SHSTK property 2017-06-22 05:50:31 -07:00
ChangeLog-0415 binutils ChangeLog rotation 2016-01-01 22:59:17 +10:30
ChangeLog-2016 ChangeLog rotation 2017-01-02 13:55:05 +10:30
ChangeLog-9103
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MAINTAINERS Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
alloca-conf.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
ansidecl.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
bfdlink.h x86: Support Intel Shadow Stack with SHSTK property 2017-06-22 05:50:31 -07:00
binary-io.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
bout.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
demangle.h Sync libiberty sources with GCC. 2017-03-13 17:49:32 +00:00
dis-asm.h Don't use print_insn_XXX in GDB 2017-06-14 16:29:01 +01:00
dwarf2.def Add DW_OP_GNU_variable_value 2017-03-14 12:57:48 -07:00
dwarf2.h Sync dwarf headers with master versions in gcc repository. 2017-01-03 15:18:52 +00:00
dyn-string.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
environ.h Fix MinGW compilation warnings due to environ.h 2017-05-31 09:35:07 +03:00
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filenames.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
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sha1.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
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timeval-utils.h Update year range in copyright notice of all files. 2017-01-02 14:08:56 +10:30
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xregex.h
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