riscv/riscv64zb.bin_fmt

// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

instruction group RiscVZbaInst64[32] : Inst32Format {
  add_uw:    RType : func7 == 0b000'0100, func3 == 0b000, opcode == 0b011'1011;
  sh1add_uw: RType : func7 == 0b001'0000, func3 == 0b010, opcode == 0b011'1011;
  sh2add_uw: RType : func7 == 0b001'0000, func3 == 0b100, opcode == 0b011'1011;
  sh3add_uw: RType : func7 == 0b001'0000, func3 == 0b110, opcode == 0b011'1011;
  slli_uw:   RSType : func6 == 0b000'010, func3 == 0b001, opcode == 0b001'1011;
}

instruction group RiscVZbbInst64[32] : Inst32Format {
  clzw  : RType  : func7 == 0b011'0000, rs2 == 0b0'0000, func3 == 0b001, opcode == 0b001'1011;
  cpopw : RType  : func7 == 0b011'0000, rs2 == 0b0'0010, func3 == 0b001, opcode == 0b001'1011;
  ctzw  : RType  : func7 == 0b011'0000, rs2 == 0b0'0001, func3 == 0b001, opcode == 0b001'1011;
  rolw  : RType  : func7 == 0b011'0000, func3 == 0b001, opcode == 0b011'1011;
  rori  : RSType : func6 == 0b011'000, func3 == 0b101, opcode == 0b001'0011;
  roriw : RType  : func7 == 0b011'0000, func3 == 0b101, opcode == 0b001'1011;
  rorw  : RType  : func7 == 0b011'0000, func3 == 0b101, opcode == 0b011'1011;
  zext_h: RType  : func7 == 0b000'0100, rs2 == 0b0'0000, func3 == 0b100, opcode == 0b011'1011;
}

instruction group RiscVZbsImmInst64[32] : Inst32Format {
  bclri : RSType : func6 == 0b010'010, func3 == 0b001, opcode == 0b001'1011;
  bexti : RSType : func6 == 0b010'010, func3 == 0b101, opcode == 0b001'1011;
  binvi : RSType : func6 == 0b011'010, func3 == 0b001, opcode == 0b001'1011;
  bseti : RSType : func6 == 0b001'010, func3 == 0b001, opcode == 0b001'1011;
}