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gcc/libgcc/config
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Szabolcs Nagy fb22faf48f aarch64, libgcc: Fix unwinding from pac-ret to normal frames [PR94514] 
With -mbranch-protection=pac-ret the debug info toggles the
signedness state of the return address so the unwinder knows when
the return address needs pointer authentication.

The unwind context flags were not updated according to the dwarf
frame info.

This causes unwinding across frames that were built without pac-ret
to incorrectly authenticate the return address wich corrupts the
return address on a system where PAuth is enabled.

Note: This even affects systems where all code use pac-ret because
unwinding across a signal frame the return address is not signed.

gcc/testsuite/ChangeLog:

	PR target/94514
	* g++.target/aarch64/pr94514.C: New test.
	* gcc.target/aarch64/pr94514.c: New test.

libgcc/ChangeLog:

	PR target/94514
	* config/aarch64/aarch64-unwind.h (aarch64_frob_update_context):
	Update context->flags accroding to the frame state.
2020-04-21 17:49:01 +01:00
..
aarch64 aarch64, libgcc: Fix unwinding from pac-ret to normal frames [PR94514] 2020-04-21 17:49:01 +01:00
alpha Update copyright years. 2020-01-01 12:51:42 +01:00
arc [ARC] Make libgcc compatible with ARC's reduced register set config. 2020-01-27 14:51:03 +02:00
arm arm: unified syntax for libgcc when built with -Os [PR94220] 2020-03-26 10:59:34 +00:00
avr Typo. 2020-01-14 11:14:23 +01:00
bfin Update copyright years. 2020-01-01 12:51:42 +01:00
bpf GCC port for eBPF 2019-09-09 12:13:23 +02:00
c6x Update copyright years. 2020-01-01 12:51:42 +01:00
cr16 Update copyright years. 2020-01-01 12:51:42 +01:00
cris libgcc: cris: config/cris/arit.c (DS): Apply attribute __fallthrough__. 2020-01-18 16:38:56 +01:00
csky Update copyright years. 2020-01-01 12:51:42 +01:00
epiphany Update copyright years. 2020-01-01 12:51:42 +01:00
fr30 Update copyright years. 2020-01-01 12:51:42 +01:00
frv Fix libgcc build failure for FRV with recent versions of gas. 2020-02-10 14:12:32 -07:00
ft32 Update copyright years. 2020-01-01 12:51:42 +01:00
gcn [amdgcn] Remove dependency on stdint.h in libgcc 2020-01-10 23:19:41 +00:00
h8300 Update copyright years. 2020-01-01 12:51:42 +01:00
i386 i386: Remove unneeded assignments when triggering SSE exceptions 2020-04-19 14:27:12 +02:00
ia64 Update copyright years. 2020-01-01 12:51:42 +01:00
iq2000 Update copyright years. 2020-01-01 12:51:42 +01:00
libbid Update copyright years. 2020-01-01 12:51:42 +01:00
lm32 Update copyright years. 2020-01-01 12:51:42 +01:00
m32c Update copyright years. 2020-01-01 12:51:42 +01:00
m32r Update copyright years. 2020-01-01 12:51:42 +01:00
m68k Update copyright years. 2020-01-01 12:51:42 +01:00
mcore Update copyright years. 2020-01-01 12:51:42 +01:00
microblaze Update copyright years. 2020-01-01 12:51:42 +01:00
mips Emit .note.GNU-stack for hard-float linux targets. 2020-01-23 17:00:03 +01:00
mmix Update copyright years. 2020-01-01 12:51:42 +01:00
moxie Update copyright years. 2020-01-01 12:51:42 +01:00
msp430 Update copyright years. 2020-01-01 12:51:42 +01:00
nds32 Update copyright years. 2020-01-01 12:51:42 +01:00
nios2 nios2: Support for GOT-relative DW_EH_PE_datarel encoding. 2020-01-31 16:46:50 -08:00
nvptx Update copyright years. 2020-01-01 12:51:42 +01:00
or1k Update copyright years. 2020-01-01 12:51:42 +01:00
pa Update copyright years. 2020-01-01 12:51:42 +01:00
pdp11 t-pdp11 (LIB2ADD): Add divmod.c. 2018-11-01 14:36:52 -04:00
pru Update copyright years. 2020-01-01 12:51:42 +01:00
riscv Update copyright years. 2020-01-01 12:51:42 +01:00
rl78 Update copyright years. 2020-01-01 12:51:42 +01:00
rs6000 Update copyright years. 2020-01-01 12:51:42 +01:00
rx Update copyright years. 2020-01-01 12:51:42 +01:00
s390 S/390 zTPF: Handle skip trace addresses when unwinding 2020-04-03 08:46:11 +02:00
score Update copyright years. 2020-01-01 12:51:42 +01:00
sh Update copyright years. 2020-01-01 12:51:42 +01:00
sol2 Update copyright years. 2020-01-01 12:51:42 +01:00
sparc Update copyright years. 2020-01-01 12:51:42 +01:00
stormy16 Update copyright years. 2020-01-01 12:51:42 +01:00
tilegx
tilepro Update copyright years. 2020-01-01 12:51:42 +01:00
v850 Update copyright years. 2020-01-01 12:51:42 +01:00
vax Update copyright years. 2020-01-01 12:51:42 +01:00
visium Update copyright years. 2020-01-01 12:51:42 +01:00
vms Update copyright years. 2020-01-01 12:51:42 +01:00
xtensa Update copyright years. 2020-01-01 12:51:42 +01:00
darwin10-unwind-find-enc-func.c Move Darwin10 unwinder fix to a crt shim. 2018-08-22 11:58:43 +00:00
darwin-64.c Update copyright years. 2020-01-01 12:51:42 +01:00
darwin-crt3.c Update copyright years. 2020-01-01 12:51:42 +01:00
darwin-crt-tm.c Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-lynx.h Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-rtems.h Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-vxworks-cond.c Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-vxworks-thread.c Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-vxworks-tls.c Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-vxworks.c Update copyright years. 2020-01-01 12:51:42 +01:00
gthr-vxworks.h Guard inclusion of vxAtomicLib.h from gthr-vxworks.h 2020-01-05 12:45:54 +00:00
hardfp.c Update copyright years. 2020-01-01 12:51:42 +01:00
libgcc-glibc.ver Update copyright years. 2020-01-01 12:51:42 +01:00
libgcc-libsystem.ver
no-sfp-machine.h
no-unwind.h
t-crtfm
t-crtstuff-pic
t-darwin [Darwin] Some TLC for older Darwin versions. 2019-07-03 18:36:28 +00:00
t-dfprules
t-eh-dw2-dip
t-fdpbit
t-fixedpoint-gnu-prefix
t-fpbit
t-freebsd-thread
t-gnu-prefix
t-gthr-noweak musl: Don't use gthr weak refs in libgcc PR91737 2019-11-18 12:08:18 +00:00
t-gthr-vxworks Improve the thread support for VxWorks 2019-11-14 15:58:31 +00:00
t-gthr-vxworksae Update the libgcc support for VxWorks AE/653 2019-11-14 16:00:55 +00:00
t-hardfp Update copyright years. 2020-01-01 12:51:42 +01:00
t-hardfp-sfdf Update copyright years. 2020-01-01 12:51:42 +01:00
t-libgcc-pic
t-libunwind
t-libunwind-elf Update copyright years. 2020-01-01 12:51:42 +01:00
t-linux
t-openbsd-thread
t-rtems
t-slibgcc Update copyright years. 2020-01-01 12:51:42 +01:00
t-slibgcc-darwin
t-slibgcc-elf-ver
t-slibgcc-fuchsia Update copyright years. 2020-01-01 12:51:42 +01:00
t-slibgcc-gld
t-slibgcc-gld-nover
t-slibgcc-hpux
t-slibgcc-libgcc Update copyright years. 2020-01-01 12:51:42 +01:00
t-slibgcc-nolc-override
t-slibgcc-sld Use v2 map syntax in libgcc-unwind.map if Solaris ld supports it 2018-09-18 07:04:15 +00:00
t-slibgcc-vms
t-softfp Update copyright years. 2020-01-01 12:51:42 +01:00
t-softfp-compat
t-softfp-excl
t-softfp-sfdf
t-softfp-sfdftf
t-softfp-tf
t-stack
t-tls
t-vxcrtstuff Introduce vxworks specific crtstuff support 2019-11-14 15:53:23 +00:00
t-vxworks Improve the thread support for VxWorks 2019-11-14 15:58:31 +00:00
t-vxworks7 Improve the thread support for VxWorks 2019-11-14 15:58:31 +00:00
t-vxworksae Update the libgcc support for VxWorks AE/653 2019-11-14 16:00:55 +00:00
unwind-dw2-fde-darwin.c Update copyright years. 2020-01-01 12:51:42 +01:00
vxcache.c Update copyright years. 2020-01-01 12:51:42 +01:00
vxcrtstuff.c Fix typo in macro name guarding conditional in vxcrtstuff.c 2019-12-30 21:11:22 +00:00