Constant-riscv-zicsr.h (1208B)
1 // Copyright 2022 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 #ifndef jit_riscv64_constant_Constant_riscv64_zicsr_h_ 5 #define jit_riscv64_constant_Constant_riscv64_zicsr_h_ 6 7 #include "jit/riscv64/constant/Base-constant-riscv.h" 8 namespace js { 9 namespace jit { 10 // RISCV CSR related bit mask and shift 11 const int kFcsrFlagsBits = 5; 12 const uint32_t kFcsrFlagsMask = (1 << kFcsrFlagsBits) - 1; 13 const int kFcsrFrmBits = 3; 14 const int kFcsrFrmShift = kFcsrFlagsBits; 15 const uint32_t kFcsrFrmMask = ((1 << kFcsrFrmBits) - 1) << kFcsrFrmShift; 16 const int kFcsrBits = kFcsrFlagsBits + kFcsrFrmBits; 17 const uint32_t kFcsrMask = kFcsrFlagsMask | kFcsrFrmMask; 18 19 enum OpcodeRISCVZICSR : uint32_t { 20 // RV32/RV64 Zicsr Standard Extension 21 RO_CSRRW = SYSTEM | (0b001 << kFunct3Shift), 22 RO_CSRRS = SYSTEM | (0b010 << kFunct3Shift), 23 RO_CSRRC = SYSTEM | (0b011 << kFunct3Shift), 24 RO_CSRRWI = SYSTEM | (0b101 << kFunct3Shift), 25 RO_CSRRSI = SYSTEM | (0b110 << kFunct3Shift), 26 RO_CSRRCI = SYSTEM | (0b111 << kFunct3Shift), 27 }; 28 } // namespace jit 29 } // namespace js 30 #endif // jit_riscv64_constant_Constant_riscv64_zicsr_h_