[PATCH, BINUTILS, AARCH64] Add SSBB and PSSBB

[Sudakshina Das]

Hi

Also if it is ok, can I also ask for a backport to 2.31?
It applies cleanly and does not show any regressions.

Thanks
Sudi



From: Sudakshina Das
Sent: Wednesday, July 11, 2018 3:39 PM
To: binutils@sourceware.org
Cc: nd; Richard Earnshaw; Marcus Shawcroft
Subject: [PATCH, BINUTILS, AARCH64] Add SSBB and PSSBB
  

Hi

This patch adds the following speculation barrier instructions
to the AArch64 assembler and disassembler as given in:
https://static.docs.arm.com/ddi0596/a/DDI_0596_ARM_a64_instruction_set_architecture.pdf
SSBB
PSSBB

These are added retrospectively to all older architectures,
and thus have been added as CORE_INSN.

Testing done: Builds and reg tests all pass on aarch64-none-linux-gnu.
Updated test to check.

Is this ok for trunk? I do not have commit rights. If this seems ok
can someone commit it on my behalf.

Thanks
Sudi

*** opcodes/ChangeLog ***

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

        * aarch64-tbl.h (aarch64_opcode_table): Add entry for
        ssbb and pssbb and update dsb flags to F_HAS_ALIAS.
        * aarch64-asm-2.c: Regenerate.
        * aarch64-dis-2.c: Regenerate.
        * aarch64-opc-2.c: Regenerate.

*** gas/ChangeLog ***

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

        * testsuite/gas/aarch64/system.s: Add test for ssbb
        and pssbb.
        * testsuite/gas/aarch64/system.d: Update accordingly
        and remove explicit addresses.