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Igor Tsimbalist 1ecae1fc23 Enable building libgcc with CET options. 
Enable building libgcc with CET options by default on Linux/x86 if
binutils supports CET v2.0.  It can be disabled with --disable-cet.
It is an error to configure GCC with --enable-cet if bintuiils
doesn't support CET v2.0.

ENDBR instruction is added to __morestack_large_model since it is
called indirectly.

2017-11-17  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

config/
	* cet.m4: New file.

gcc/
	* config.gcc (extra_headers): Add cet.h for x86 targets.
	* config/i386/cet.h: New file.
	* doc/install.texi: Add --enable-cet/--disable-cet.

libgcc/
	* Makefile.in (configure_deps): Add $(srcdir)/../config/cet.m4.
	(CET_FLAGS): New.
	* config/i386/morestack.S: Include <cet.h>.
	(__morestack_large_model): Add _CET_ENDBR at function entrance.
	* config/i386/resms64.h: Include <cet.h>.
	* config/i386/resms64f.h: Likewise.
	* config/i386/resms64fx.h: Likewise.
	* config/i386/resms64x.h: Likewise.
	* config/i386/savms64.h: Likewise.
	* config/i386/savms64f.h: Likewise.
	* config/i386/t-linux (HOST_LIBGCC2_CFLAGS): Add $(CET_FLAGS).
	(CRTSTUFF_T_CFLAGS): Likewise.
	* configure.ac: Include ../config/cet.m4.
	Set and substitute CET_FLAGS.
	* configure: Regenerated.

From-SVN: r254868
 		2017-11-17 14:34:39 +01:00
..
aarch64 [libgcc] Remove semicolon after do {} while (0) in FP_HANDLE_EXCEPTIONS 2017-11-07 08:11:43 +00:00
alpha Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
arc [ARC] Fix to unwinding. 2017-11-03 11:51:18 +01:00
arm config.gcc (arm-wrs-vxworks*): Rework to handle arm-wrs-vxworks7 as well as arm-wrs-vxworks. 2017-08-01 14:14:21 +00:00
avr Update copyright years. 2017-01-01 13:07:43 +01:00
bfin Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
c6x Fix numerous typos in comments 2017-04-03 23:30:56 +01:00
cr16 Update copyright years. 2017-01-01 13:07:43 +01:00
cris Update copyright years. 2017-01-01 13:07:43 +01:00
epiphany Update copyright years. 2017-01-01 13:07:43 +01:00
fr30 Update copyright years. 2017-01-01 13:07:43 +01:00
frv Update copyright years. 2017-01-01 13:07:43 +01:00
ft32 crti-hw.S: Add watchdog vector, FT930 IRQ support. 2017-09-29 01:01:52 +00:00
h8300 Update copyright years. 2017-01-01 13:07:43 +01:00
i386 Enable building libgcc with CET options. 2017-11-17 14:34:39 +01:00
ia64 [libgcc] Remove semicolon after do {} while (0) in FP_HANDLE_EXCEPTIONS 2017-11-07 08:11:43 +00:00
iq2000 Update copyright years. 2017-01-01 13:07:43 +01:00
libbid Update copyright years. 2017-01-01 13:07:43 +01:00
lm32 Update copyright years. 2017-01-01 13:07:43 +01:00
m32c Update copyright years. 2017-01-01 13:07:43 +01:00
m32r Update copyright years. 2017-01-01 13:07:43 +01:00
m68k Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
mcore Update copyright years. 2017-01-01 13:07:43 +01:00
microblaze Enable no-exec stacks for more targets using the Linux kernel. 2017-09-26 17:35:53 +01:00
mips [libgcc] Remove semicolon after do {} while (0) in FP_HANDLE_EXCEPTIONS 2017-11-07 08:11:43 +00:00
mmix Update copyright years. 2017-01-01 13:07:43 +01:00
moxie Update copyright years. 2017-01-01 13:07:43 +01:00
msp430 t-msp430 (LIB2ADD): Remove mpy.c 2017-01-17 22:56:10 -05:00
nds32 Update copyright years. 2017-01-01 13:07:43 +01:00
nios2 Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
nvptx Update copyright years. 2017-01-01 13:07:43 +01:00
pa Enable no-exec stacks for more targets using the Linux kernel. 2017-09-26 17:35:53 +01:00
pdp11
…
riscv Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
rl78 rl78.md: New define_expand "subdi3". 2017-10-23 13:54:02 -04:00
rs6000 [libgcc, rs6000] Remove semicolon after do {} while (0) in REGISTER_CFA_OFFSET_FOR 2017-11-07 09:21:40 +00:00
rx Update copyright years. 2017-01-01 13:07:43 +01:00
s390 Update copyright years. 2017-01-01 13:07:43 +01:00
score Update copyright years. 2017-01-01 13:07:43 +01:00
sh Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
sol2 Adapt Solaris 12 references 2017-11-14 18:31:01 +00:00
sparc lb1spc.S: Emit .note.GNU-stack section for a non-executable stack. 2017-05-15 07:36:18 +00:00
spu Update copyright years. 2017-01-01 13:07:43 +01:00
stormy16 Update copyright years. 2017-01-01 13:07:43 +01:00
tilegx
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tilepro Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
v850 Update copyright years. 2017-01-01 13:07:43 +01:00
vax Update copyright years. 2017-01-01 13:07:43 +01:00
visium Update copyright years. 2017-01-01 13:07:43 +01:00
vms Update copyright years. 2017-01-01 13:07:43 +01:00
xtensa Use ucontext_t not struct ucontext in linux-unwind.h files. 2017-06-28 10:21:16 +01:00
darwin-64.c Update copyright years. 2017-01-01 13:07:43 +01:00
darwin-crt-tm.c Update copyright years. 2017-01-01 13:07:43 +01:00
darwin-crt3.c Update copyright years. 2017-01-01 13:07:43 +01:00
gthr-lynx.h Update copyright years. 2017-01-01 13:07:43 +01:00
gthr-rtems.h Update copyright years. 2017-01-01 13:07:43 +01:00
gthr-vxworks.h Update copyright years. 2017-01-01 13:07:43 +01:00
hardfp.c Update copyright years. 2017-01-01 13:07:43 +01:00
libgcc-glibc.ver Update copyright years. 2017-01-01 13:07:43 +01:00
libgcc-libsystem.ver
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no-sfp-machine.h
…
no-unwind.h
…
t-crtfm
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t-crtstuff-pic
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t-darwin [Darwin] fix PR67710 by updating 'as' specs to handle newer assembler versions. 2016-11-27 15:07:22 +00:00
t-dfprules
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t-eh-dw2-dip
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t-fdpbit
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t-fixedpoint-gnu-prefix
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t-fpbit
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t-freebsd-thread
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t-gnu-prefix
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t-hardfp Update copyright years. 2017-01-01 13:07:43 +01:00
t-hardfp-sfdf Update copyright years. 2017-01-01 13:07:43 +01:00
t-libgcc-pic
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t-libunwind
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t-libunwind-elf Update copyright years. 2017-01-01 13:07:43 +01:00
t-linux
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t-openbsd-thread
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t-rtems
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t-slibgcc Update copyright years. 2017-01-01 13:07:43 +01:00
t-slibgcc-darwin
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t-slibgcc-elf-ver
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t-slibgcc-fuchsia Add fuchsia support to libgcc 2017-05-06 00:22:38 +00:00
t-slibgcc-gld
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t-slibgcc-gld-nover
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t-slibgcc-hpux
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t-slibgcc-libgcc Update copyright years. 2017-01-01 13:07:43 +01:00
t-slibgcc-nolc-override
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t-slibgcc-sld
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t-slibgcc-vms
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t-softfp Update copyright years. 2017-01-01 13:07:43 +01:00
t-softfp-compat
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t-softfp-excl
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t-softfp-sfdf
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t-softfp-sfdftf
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t-softfp-tf
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t-stack
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t-tls
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t-vxworks t-vxworks (LIBGCC2_INCLUDES): Start with -I. 2017-08-01 13:23:06 +00:00
t-vxworks7 t-vxworks (LIBGCC2_INCLUDES): Start with -I. 2017-08-01 13:23:06 +00:00
unwind-dw2-fde-darwin.c Update copyright years. 2017-01-01 13:07:43 +01:00
vxlib-tls.c Update copyright years. 2017-01-01 13:07:43 +01:00
vxlib.c vxlib.c (__gthread_once): Add missing value to nested return statement. 2017-06-02 16:24:28 +00:00