RISC-V: Add support for XCVmem extension in CV32E40P

Spec: https://docs.openhwgroup.org/projects/cv32e40p-user-manual/en/latest/instruction_set_extensions.html

Contributors:
  Mary Bennett <mary.bennett682@gmail.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>

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_multi_subset_supports): Add `xcvmem`
	instruction class.
	(riscv_multi_subset_supports_ext): Likewise.

gas/ChangeLog:
	* doc/c-riscv.texi: Note XCVmem as an additional ISA extension
	for CORE-V.
	* testsuite/gas/riscv/cv-mem-fail-march.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-march.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-march.s: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-01.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-01.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-01.s: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-02.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-02.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-02.s: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-03.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-03.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-03.s: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-04.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-04.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-04.s: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-05.d: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-05.l: New test.
	* testsuite/gas/riscv/cv-mem-fail-operand-05.s: New test.
	* testsuite/gas/riscv/cv-mem-lbpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lbpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lbrr.d: New test.
	* testsuite/gas/riscv/cv-mem-lbrr.s: New test.
	* testsuite/gas/riscv/cv-mem-lbrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lbrrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lbupost.d: New test.
	* testsuite/gas/riscv/cv-mem-lbupost.s: New test.
	* testsuite/gas/riscv/cv-mem-lburr.d: New test.
	* testsuite/gas/riscv/cv-mem-lburr.s: New test.
	* testsuite/gas/riscv/cv-mem-lburrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lburrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lhpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lhpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lhrr.d: New test.
	* testsuite/gas/riscv/cv-mem-lhrr.s: New test.
	* testsuite/gas/riscv/cv-mem-lhrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lhrrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lhupost.d: New test.
	* testsuite/gas/riscv/cv-mem-lhupost.s: New test.
	* testsuite/gas/riscv/cv-mem-lhurr.d: New test.
	* testsuite/gas/riscv/cv-mem-lhurr.s: New test.
	* testsuite/gas/riscv/cv-mem-lhurrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lhurrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lwpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lwpost.s: New test.
	* testsuite/gas/riscv/cv-mem-lwrr.d: New test.
	* testsuite/gas/riscv/cv-mem-lwrr.s: New test.
	* testsuite/gas/riscv/cv-mem-lwrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-lwrrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-sbpost.d: New test.
	* testsuite/gas/riscv/cv-mem-sbpost.s: New test.
	* testsuite/gas/riscv/cv-mem-sbrr.d: New test.
	* testsuite/gas/riscv/cv-mem-sbrr.s: New test.
	* testsuite/gas/riscv/cv-mem-sbrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-sbrrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-shpost.d: New test.
	* testsuite/gas/riscv/cv-mem-shpost.s: New test.
	* testsuite/gas/riscv/cv-mem-shrr.d: New test.
	* testsuite/gas/riscv/cv-mem-shrr.s: New test.
	* testsuite/gas/riscv/cv-mem-shrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-shrrpost.s: New test.
	* testsuite/gas/riscv/cv-mem-swpost.d: New test.
	* testsuite/gas/riscv/cv-mem-swpost.s: New test.
	* testsuite/gas/riscv/cv-mem-swrr.d: New test.
	* testsuite/gas/riscv/cv-mem-swrr.s: New test.
	* testsuite/gas/riscv/cv-mem-swrrpost.d: New test.
	* testsuite/gas/riscv/cv-mem-swrrpost.s: New test.
	* testsuite/gas/riscv/march-help.l: Add xcvmem string.

include/ChangeLog:

	* opcode/riscv-opc.h: Add corresponding MATCH and MASK macros
	for XCVmem.
	* opcode/riscv.h: Add corresponding EXTRACT and ENCODE macros
	for XCVmem.
	(enum riscv_insn_class): Add the XCVmem instruction class.

opcodes/ChangeLog:

	* riscv-opc.c: Add XCVmem instructions.

1 files changed, 5 insertions, 0 deletions

diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index c96d502..5cb063a 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1456,6 +1456,7 @@ static struct riscv_supported_ext riscv_supported_vendor_x_ext[] =
   {"xcvalu",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
   {"xcvelw",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
   {"xcvbi",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
+  {"xcvmem",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
   {"xtheadba",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
   {"xtheadbb",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
   {"xtheadbs",		ISA_SPEC_CLASS_DRAFT,	1, 0, 0 },
@@ -2680,6 +2681,8 @@ riscv_multi_subset_supports (riscv_parse_subset_t *rps,
       return riscv_subset_supports (rps, "xcvelw");
     case INSN_CLASS_XCVBI:
       return riscv_subset_supports (rps, "xcvbi");
+    case INSN_CLASS_XCVMEM:
+      return riscv_subset_supports (rps, "xcvmem");
     case INSN_CLASS_XTHEADBA:
       return riscv_subset_supports (rps, "xtheadba");
     case INSN_CLASS_XTHEADBB:
@@ -2942,6 +2945,8 @@ riscv_multi_subset_supports_ext (riscv_parse_subset_t *rps,
       return "xcvelw";
     case INSN_CLASS_XCVBI:
       return "xcvbi";
+    case INSN_CLASS_XCVMEM:
+      return "xcvmem";
     case INSN_CLASS_XTHEADBA:
       return "xtheadba";
     case INSN_CLASS_XTHEADBB: