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Sudakshina Das 104fefeebb [PATCH, BINUTULS, AARCH64, 9/9] Add SSBS to MSR/MRS 
This patch is part of the patch series to add support for ARMv8.5-A
extensions.
(https://developer.arm.com/products/architecture/cpu-architecture/a-profile/exploration-tools)
The encodings can be found in the System Register XML.

This patch adds support for the mitigation for Spectre Variant 4 by
adding the PSTATE bit SSBS which are accessible using MSR and MRS
instructions. Although this is a mandatory addition to the ARMv8.5-A,
it is permitted to be added to any version of the ARMv8 architecture.
This is enabled using the command line option of +ssbs for older
versions.

*** include/ChangeLog ***

2018-10-09  Sudakshina Das  <sudi.das@arm.com>

	* opcode/aarch64.h (AARCH64_FEATURE_SSBS): New.
	(AARCH64_ARCH_V8_5): Add AARCH64_FEATURE_SSBS by default.

*** opcodes/ChangeLog ***

2018-10-09  Sudakshina Das  <sudi.das@arm.com>

	* aarch64-opc.c (operand_general_constraint_met_p): Add
	SSBS in the check for one-bit immediate.
	(aarch64_sys_regs): New entry for SSBS.
	(aarch64_sys_reg_supported_p): New check for above.
	(aarch64_pstatefields): New entry for SSBS.
	(aarch64_pstatefield_supported_p): New check for above.

*** gas/ChangeLog ***

2018-10-09  Sudakshina Das  <sudi.das@arm.com>

	* config/tc-aarch64.c (aarch64_features): Add new "ssbs".
	* doc/c-aarch64.texi: Document the same.
	* testsuite/gas/aarch64/ssbs-illegal1.d: New test.
	* testsuite/gas/aarch64/ssbs-illegal1.l: New test.
	* testsuite/gas/aarch64/ssbs-illegal2.d: New test.
	* testsuite/gas/aarch64/ssbs-illegal2.l: New test.
	* testsuite/gas/aarch64/ssbs.s: New test.
	* testsuite/gas/aarch64/ssbs1.d: Test with +ssbs
	* testsuite/gas/aarch64/ssbs2.d: Test with armv8.5-a.
 		2018-10-09 15:39:29 +01:00
..
ChangeLog-0415 binutils ChangeLog rotation 2016-01-01 22:59:17 +10:30
ChangeLog-9103 Add copyright notices 2012-12-10 12:48:03 +00:00
aarch64.h [PATCH, BINUTULS, AARCH64, 9/9] Add SSBS to MSR/MRS 2018-10-09 15:39:29 +01:00
alpha.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
arc-attrs.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
arc-func.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
arc.h [ARC] Update handling AUX-registers. 2018-08-06 16:41:32 +03:00
arm.h [Arm, 3/3] Add Execution and Data Prediction instructions for AArch32 2018-10-05 11:31:21 +01:00
avr.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
bfin.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
cgen.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
convex.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
cr16.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
cris.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
crx.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
csky.h Add support for the C_SKY series of processors. 2018-07-30 12:24:14 +01:00
d10v.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
d30v.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
dlx.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
ft32.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
h8300.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
hppa.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
i386.h x86: Remove support for old (<= 2.8.1) versions of gcc 2018-03-08 06:31:52 -08:00
ia64.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
m68hc11.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
m68k.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
metag.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
mips.h [MIPS] Add Loongson 2K1000 proccessor support. 2018-08-29 20:55:25 +08:00
mmix.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
mn10200.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
mn10300.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
moxie.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
msp430-decode.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
msp430.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
nds32.h Andes Technology has good news for you, we plan to update the nds32 port of binutils on upstream! 2018-09-20 13:32:58 +01:00
nfp.h Fix error messages in the NFP sources when building for 32-bit targets. 2018-05-15 13:28:06 +01:00
nios2.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
nios2r1.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
nios2r2.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
np1.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
ns32k.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
pdp11.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
pj.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
pn.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
ppc.h Use operand->extract to provide defaults for optional PowerPC operands 2018-08-21 16:05:36 +09:30
pru.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
pyr.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
riscv-opc.h RISC-V: Add fence.tso instruction 2018-10-02 08:26:32 -07:00
riscv.h RISC-V: Allow instruction require more than one extension 2018-08-30 13:23:12 -07:00
rl78.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
rx.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
s12z.h S12Z: Move opcode header to public include directory. 2018-08-18 07:50:03 +02:00
s390.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
score-datadep.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
score-inst.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
sparc.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
spu-insns.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
spu.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic4x.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic6x-control-registers.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic6x-insn-formats.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic6x-opcode-table.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic6x.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic30.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic54x.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tic80.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tilegx.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
tilepro.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
v850.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
vax.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
visium.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
wasm.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
xgate.h Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30