[0/3] RISC-V: Support CORE-V XCVELW, XCVBI, and XCVMEM extensions

  This patch series presents the comprehensive implementation of the ELW, BI, and MEM
extension for CORE-V.

Tested with riscv-gnu-toolchain on binutils, ld, gas and gcc testsuites to
ensure its correctness and compatibility with the existing codebase.
However, your input, reviews, and suggestions are invaluable in making this
extension even more robust.

The CORE-V instructions are described in the specification [1] and work can be
found in the OpenHW group's Github repository [2].

[1] docs.openhwgroup.org/projects/cv32e40p-user-manual/en/latest/instruction_set_extensions.html

[2] github.com/openhwgroup/corev-binutils-gdb

Contributors:
      Mary Bennett <mary.bennett@embecosm.com>
      Nandni Jamnadas <nandni.jamnadas@embecosm.com>
      Pietra Ferreira <pietra.ferreira@embecosm.com>
      Charlie Keaney
      Jessica Mills
      Craig Blackmore <craig.blackmore@embecosm.com>
      Simon Cook <simon.cook@embecosm.com>
      Jeremy Bennett <jeremy.bennett@embecosm.com>
      Helene Chelin <helene.chelin@embecosm.com>
      Nazareno Bruschi <nazareno.bruschi@embecosm.com>
      Lin Sinan

RISC-V: Add support for XCVmem extension in CV32E40P
RISC-V: Add support for XCVelw extension in CV32E40P
RISC-V: Add support for XCVbi extension in CV32E40P

 bfd/elfxx-riscv.c                             | 15 ++++++
 gas/config/tc-riscv.c                         | 12 ++++-
 gas/doc/c-riscv.texi                          | 15 ++++++
 gas/testsuite/gas/riscv/cv-bi-beqimm.d        | 12 +++++
 gas/testsuite/gas/riscv/cv-bi-beqimm.s        |  4 ++
 gas/testsuite/gas/riscv/cv-bi-bneimm.d        | 12 +++++
 gas/testsuite/gas/riscv/cv-bi-bneimm.s        |  4 ++
 gas/testsuite/gas/riscv/cv-bi-fail-march.d    |  3 ++
 gas/testsuite/gas/riscv/cv-bi-fail-march.l    |  3 ++
 gas/testsuite/gas/riscv/cv-bi-fail-march.s    |  5 ++
 .../gas/riscv/cv-bi-fail-operand-01.d         |  3 ++
 .../gas/riscv/cv-bi-fail-operand-01.l         |  3 ++
 .../gas/riscv/cv-bi-fail-operand-01.s         |  4 ++
 .../gas/riscv/cv-bi-fail-operand-02.d         |  3 ++
 .../gas/riscv/cv-bi-fail-operand-02.l         |  3 ++
 .../gas/riscv/cv-bi-fail-operand-02.s         |  4 ++
 .../gas/riscv/cv-bi-fail-operand-03.d         |  3 ++
 .../gas/riscv/cv-bi-fail-operand-03.l         |  9 ++++
 .../gas/riscv/cv-bi-fail-operand-03.s         | 10 ++++
 gas/testsuite/gas/riscv/cv-elw-fail-march.d   |  3 ++
 gas/testsuite/gas/riscv/cv-elw-fail-march.l   | 38 +++++++++++++++
 gas/testsuite/gas/riscv/cv-elw-fail-march.s   | 42 +++++++++++++++++
 gas/testsuite/gas/riscv/cv-elw-fail.d         |  3 ++
 gas/testsuite/gas/riscv/cv-elw-fail.l         |  5 ++
 gas/testsuite/gas/riscv/cv-elw-fail.s         |  8 ++++
 gas/testsuite/gas/riscv/cv-elw-pass.d         | 46 +++++++++++++++++++
 gas/testsuite/gas/riscv/cv-elw-pass.s         | 42 +++++++++++++++++
 gas/testsuite/gas/riscv/cv-mem-fail-march.d   |  3 ++
 gas/testsuite/gas/riscv/cv-mem-fail-march.l   | 25 ++++++++++
 gas/testsuite/gas/riscv/cv-mem-fail-march.s   | 26 +++++++++++
 .../gas/riscv/cv-mem-fail-operand-01.d        |  3 ++
 .../gas/riscv/cv-mem-fail-operand-01.l        | 21 +++++++++
 .../gas/riscv/cv-mem-fail-operand-01.s        | 22 +++++++++
 .../gas/riscv/cv-mem-fail-operand-02.d        |  3 ++
 .../gas/riscv/cv-mem-fail-operand-02.l        | 13 ++++++
 .../gas/riscv/cv-mem-fail-operand-02.s        | 14 ++++++
 .../gas/riscv/cv-mem-fail-operand-03.d        |  3 ++
 .../gas/riscv/cv-mem-fail-operand-03.l        | 33 +++++++++++++
 .../gas/riscv/cv-mem-fail-operand-03.s        | 34 ++++++++++++++
 .../gas/riscv/cv-mem-fail-operand-04.d        |  3 ++
 .../gas/riscv/cv-mem-fail-operand-04.l        | 41 +++++++++++++++++
 .../gas/riscv/cv-mem-fail-operand-04.s        | 42 +++++++++++++++++
 .../gas/riscv/cv-mem-fail-operand-05.d        |  3 ++
 .../gas/riscv/cv-mem-fail-operand-05.l        | 25 ++++++++++
 .../gas/riscv/cv-mem-fail-operand-05.s        | 26 +++++++++++
 gas/testsuite/gas/riscv/cv-mem-lbpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lbpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lbrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lbrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lbrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lbrrpost.s     |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lbupost.d      | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lbupost.s      |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lburr.d        | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lburr.s        |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lburrpost.d    | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lburrpost.s    |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhrrpost.s     |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhupost.d      | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhupost.s      |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhurr.d        | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhurr.s        |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lhurrpost.d    | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lhurrpost.s    |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lwpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lwpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lwrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lwrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-lwrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-lwrrpost.s     |  4 ++
 gas/testsuite/gas/riscv/cv-mem-sbpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-sbpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-sbrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-sbrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-sbrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-sbrrpost.s     |  4 ++
 gas/testsuite/gas/riscv/cv-mem-shpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-shpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-shrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-shrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-shrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-shrrpost.s     |  4 ++
 gas/testsuite/gas/riscv/cv-mem-swpost.d       | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-swpost.s       |  4 ++
 gas/testsuite/gas/riscv/cv-mem-swrr.d         | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-swrr.s         |  4 ++
 gas/testsuite/gas/riscv/cv-mem-swrrpost.d     | 12 +++++
 gas/testsuite/gas/riscv/cv-mem-swrrpost.s     |  4 ++
 include/opcode/riscv-opc.h                    | 39 ++++++++++++++++
 include/opcode/riscv.h                        |  6 +++
 ld/testsuite/ld-riscv-elf/cv-bi-beqimm.d      | 21 +++++++++
 ld/testsuite/ld-riscv-elf/cv-bi-beqimm.s      | 11 +++++
 ld/testsuite/ld-riscv-elf/cv-bi-bneimm.d      | 21 +++++++++
 ld/testsuite/ld-riscv-elf/cv-bi-bneimm.s      | 11 +++++
 ld/testsuite/ld-riscv-elf/ld-riscv-elf.exp    |  2 +
 opcodes/riscv-dis.c                           |  4 ++
 opcodes/riscv-opc.c                           | 33 +++++++++++++
 102 files changed, 1185 insertions(+), 1 deletion(-)
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-beqimm.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-beqimm.s
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-bneimm.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-bneimm.s
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-march.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-march.l
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-march.s
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-01.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-01.l
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-01.s
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-02.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-02.l
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-02.s
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-03.d
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-03.l
 create mode 100644 gas/testsuite/gas/riscv/cv-bi-fail-operand-03.s
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail-march.d
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail-march.l
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail-march.s
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail.d
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail.l
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-fail.s
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-pass.d
 create mode 100644 gas/testsuite/gas/riscv/cv-elw-pass.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-march.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-march.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-march.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-01.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-01.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-01.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-02.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-02.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-02.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-03.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-03.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-03.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-04.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-04.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-04.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-05.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-05.l
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-fail-operand-05.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbrrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbupost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lbupost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lburr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lburr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lburrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lburrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhrrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhupost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhupost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhurr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhurr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhurrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lhurrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-lwrrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-sbrrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-shrrpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swpost.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swrr.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swrr.s
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swrrpost.d
 create mode 100644 gas/testsuite/gas/riscv/cv-mem-swrrpost.s
 create mode 100644 ld/testsuite/ld-riscv-elf/cv-bi-beqimm.d
 create mode 100644 ld/testsuite/ld-riscv-elf/cv-bi-beqimm.s
 create mode 100644 ld/testsuite/ld-riscv-elf/cv-bi-bneimm.d
 create mode 100644 ld/testsuite/ld-riscv-elf/cv-bi-bneimm.s