| // Copyright 2023 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. |
| |
| #include "riscv/riscv32g_vec_encoding.h" |
| |
| #include <cstdint> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "absl/log/log.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/types/span.h" |
| #include "mpact/sim/generic/immediate_operand.h" |
| #include "mpact/sim/generic/literal_operand.h" |
| #include "mpact/sim/generic/register.h" |
| #include "mpact/sim/generic/simple_resource.h" |
| #include "mpact/sim/generic/simple_resource_operand.h" |
| #include "riscv/riscv32gv_bin_decoder.h" |
| #include "riscv/riscv32gv_decoder.h" |
| #include "riscv/riscv32gv_enums.h" |
| #include "riscv/riscv_register.h" |
| #include "riscv/riscv_state.h" |
| |
| namespace mpact { |
| namespace sim { |
| namespace riscv { |
| namespace isa32v { |
| |
| template <typename M, typename E, typename G> |
| inline void Insert(M& map, E entry, G getter) { |
| map.insert(std::make_pair(static_cast<int>(entry), getter)); |
| } |
| |
| constexpr int kNumRegTable[8] = {8, 1, 2, 1, 4, 1, 2, 1}; |
| |
| template <typename RegType> |
| inline void GetVRegGroup(RiscVState* state, int reg_num, |
| std::vector<generic::RegisterBase*>* vreg_group) { |
| // The number of registers in a vector register group depends on the register |
| // index: 0, 8, 16, 24 each have 8 registers, 4, 12, 20, 28 each have 4, |
| // 2, 6, 10, 14, 18, 22, 26, 30 each have two, and all odd numbered register |
| // groups have only 1. |
| int num_regs = kNumRegTable[reg_num % 8]; |
| for (int i = 0; i < num_regs; i++) { |
| auto vreg_name = absl::StrCat(RiscVState::kVregPrefix, reg_num + i); |
| vreg_group->push_back(state->GetRegister<RegType>(vreg_name).first); |
| } |
| } |
| template <typename RegType> |
| inline SourceOperandInterface* GetVectorRegisterSourceOp(RiscVState* state, |
| int reg_num) { |
| std::vector<generic::RegisterBase*> vreg_group; |
| GetVRegGroup<RegType>(state, reg_num, &vreg_group); |
| auto* v_src_op = new RV32VectorSourceOperand( |
| absl::Span<generic::RegisterBase*>(vreg_group), |
| absl::StrCat(RiscVState::kVregPrefix, reg_num)); |
| return v_src_op; |
| } |
| |
| template <typename RegType> |
| inline DestinationOperandInterface* GetVectorRegisterDestinationOp( |
| RiscVState* state, int latency, int reg_num) { |
| std::vector<generic::RegisterBase*> vreg_group; |
| GetVRegGroup<RegType>(state, reg_num, &vreg_group); |
| auto* v_dst_op = new RV32VectorDestinationOperand( |
| absl::Span<generic::RegisterBase*>(vreg_group), latency, |
| absl::StrCat(RiscVState::kVregPrefix, reg_num)); |
| return v_dst_op; |
| } |
| |
| template <typename RegType> |
| inline SourceOperandInterface* GetVectorMaskRegisterSourceOp(RiscVState* state, |
| int reg_num) { |
| // Mask register groups only have a single register. |
| std::vector<generic::RegisterBase*> vreg_group; |
| vreg_group.push_back( |
| state |
| ->GetRegister<RegType>(absl::StrCat(RiscVState::kVregPrefix, reg_num)) |
| .first); |
| auto* v_src_op = new RV32VectorSourceOperand( |
| absl::Span<generic::RegisterBase*>(vreg_group), |
| absl::StrCat(RiscVState::kVregPrefix, reg_num)); |
| return v_src_op; |
| } |
| |
| template <typename RegType> |
| inline DestinationOperandInterface* GetVectorMaskRegisterDestinationOp( |
| RiscVState* state, int latency, int reg_num) { |
| // Mask register groups only have a single register. |
| std::vector<generic::RegisterBase*> vreg_group; |
| vreg_group.push_back( |
| state |
| ->GetRegister<RegType>(absl::StrCat(RiscVState::kVregPrefix, reg_num)) |
| .first); |
| auto* v_dst_op = new RV32VectorDestinationOperand( |
| absl::Span<generic::RegisterBase*>(vreg_group), latency, |
| absl::StrCat(RiscVState::kVregPrefix, reg_num)); |
| return v_dst_op; |
| } |
| |
| // Generic helper functions to create register operands. |
| template <typename RegType> |
| inline DestinationOperandInterface* GetRegisterDestinationOp(RiscVState* state, |
| std::string name, |
| int latency) { |
| auto* reg = state->GetRegister<RegType>(name).first; |
| return reg->CreateDestinationOperand(latency); |
| } |
| |
| template <typename RegType> |
| inline DestinationOperandInterface* GetRegisterDestinationOp( |
| RiscVState* state, std::string name, int latency, std::string op_name) { |
| auto* reg = state->GetRegister<RegType>(name).first; |
| return reg->CreateDestinationOperand(latency, op_name); |
| } |
| |
| template <typename T> |
| inline DestinationOperandInterface* GetCSRSetBitsDestinationOp( |
| RiscVState* state, std::string name, int latency, std::string op_name) { |
| auto result = state->csr_set()->GetCsr(name); |
| if (!result.ok()) { |
| LOG(ERROR) << "No such CSR '" << name << "'"; |
| return nullptr; |
| } |
| auto* csr = result.value(); |
| auto* op = csr->CreateSetDestinationOperand(latency, op_name); |
| return op; |
| } |
| |
| template <typename RegType> |
| inline SourceOperandInterface* GetRegisterSourceOp(RiscVState* state, |
| std::string name) { |
| auto* reg = state->GetRegister<RegType>(name).first; |
| auto* op = reg->CreateSourceOperand(); |
| return op; |
| } |
| |
| template <typename RegType> |
| inline SourceOperandInterface* GetRegisterSourceOp(RiscVState* state, |
| std::string name, |
| std::string op_name) { |
| auto* reg = state->GetRegister<RegType>(name).first; |
| auto* op = reg->CreateSourceOperand(op_name); |
| return op; |
| } |
| |
| RiscV32GVecEncoding::RiscV32GVecEncoding(RiscVState* state) : state_(state) { |
| InitializeSourceOperandGetters(); |
| InitializeDestinationOperandGetters(); |
| InitializeSimpleResourceGetters(); |
| InitializeVectorSourceOperandGetters(); |
| InitializeVectorDestinationOperandGetters(); |
| resource_pool_ = new generic::SimpleResourcePool("RiscV32GV", 128); |
| resource_delay_line_ = |
| state_->CreateAndAddDelayLine<generic::SimpleResourceDelayLine>(8); |
| } |
| |
| RiscV32GVecEncoding::~RiscV32GVecEncoding() { delete resource_pool_; } |
| |
| void RiscV32GVecEncoding::InitializeVectorSourceOperandGetters() { |
| Insert(source_op_getters_, SourceOpEnum::kVd, |
| [this]() -> SourceOperandInterface* { |
| auto num = encoding::v_arith::ExtractVd(inst_word_); |
| return GetVectorRegisterSourceOp<RVVectorRegister>(state_, num); |
| }); |
| Insert(source_op_getters_, SourceOpEnum::kVmask, |
| [this]() -> SourceOperandInterface* { |
| auto vm = encoding::v_arith::ExtractVm(inst_word_); |
| if (vm == 1) { |
| // Unmasked, return the True mask. |
| return new RV32VectorTrueOperand(state_); |
| } |
| // Masked. Return the mask register. |
| return GetVectorMaskRegisterSourceOp<RVVectorRegister>(state_, 0); |
| }); |
| Insert(source_op_getters_, SourceOpEnum::kVmaskTrue, |
| [this]() -> SourceOperandInterface* { |
| return new RV32VectorTrueOperand(state_); |
| }); |
| Insert(source_op_getters_, SourceOpEnum::kVs1, |
| [this]() -> SourceOperandInterface* { |
| auto num = encoding::v_arith::ExtractVs1(inst_word_); |
| return GetVectorRegisterSourceOp<RVVectorRegister>(state_, num); |
| }); |
| Insert(source_op_getters_, SourceOpEnum::kVs2, |
| [this]() -> SourceOperandInterface* { |
| auto num = encoding::v_arith::ExtractVs2(inst_word_); |
| return GetVectorRegisterSourceOp<RVVectorRegister>(state_, num); |
| }); |
| Insert(source_op_getters_, SourceOpEnum::kVs3, |
| [this]() -> SourceOperandInterface* { |
| auto num = encoding::v_mem::ExtractVs3(inst_word_); |
| return GetVectorRegisterSourceOp<RVVectorRegister>(state_, num); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kSimm5, |
| [this]() -> SourceOperandInterface* { |
| const auto num = encoding::inst32_format::ExtractSimm5(inst_word_); |
| return new generic::ImmediateOperand<int32_t>(num); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kUimm5, |
| [this]() -> SourceOperandInterface* { |
| const auto num = encoding::inst32_format::ExtractUimm5(inst_word_); |
| return new generic::ImmediateOperand<int32_t>(num); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kZimm10, |
| [this]() -> SourceOperandInterface* { |
| const auto num = encoding::inst32_format::ExtractZimm10(inst_word_); |
| return new generic::ImmediateOperand<int32_t>(num); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kZimm11, |
| [this]() -> SourceOperandInterface* { |
| const auto num = encoding::inst32_format::ExtractZimm11(inst_word_); |
| return new generic::ImmediateOperand<int32_t>(num); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kConst1, |
| []() -> SourceOperandInterface* { |
| return new generic::ImmediateOperand<int32_t>(1); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kConst2, |
| []() -> SourceOperandInterface* { |
| return new generic::ImmediateOperand<int32_t>(2); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kConst4, |
| []() -> SourceOperandInterface* { |
| return new generic::ImmediateOperand<int32_t>(4); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kConst8, |
| []() -> SourceOperandInterface* { |
| return new generic::ImmediateOperand<int32_t>(8); |
| }); |
| |
| Insert(source_op_getters_, SourceOpEnum::kNf, |
| [this]() -> SourceOperandInterface* { |
| auto num_fields = encoding::v_mem::ExtractNf(inst_word_); |
| return new generic::ImmediateOperand<uint8_t>( |
| num_fields, absl::StrCat(num_fields + 1)); |
| }); |
| } |
| |
| void RiscV32GVecEncoding::InitializeVectorDestinationOperandGetters() { |
| Insert(dest_op_getters_, DestOpEnum::kVd, |
| [this](int latency) -> DestinationOperandInterface* { |
| auto num = encoding::v_arith::ExtractVd(inst_word_); |
| return GetVectorRegisterDestinationOp<RVVectorRegister>( |
| state_, latency, num); |
| }); |
| } |
| |
| void RiscV32GVecEncoding::InitializeSourceOperandGetters() { |
| // Source operand getters. |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kAAq), |
| [this]() -> SourceOperandInterface* { |
| if (encoding::inst32_format::ExtractAq(inst_word_)) { |
| return new generic::IntLiteralOperand<1>(); |
| } |
| return new generic::IntLiteralOperand<0>(); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kARl), |
| [this]() -> SourceOperandInterface* { |
| if (encoding::inst32_format::ExtractRl(inst_word_)) { |
| return new generic::IntLiteralOperand<1>(); |
| } |
| return new generic::IntLiteralOperand<0>(); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kBImm12), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractBImm(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kC3drs2), [this]() { |
| auto num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kC3frs2), [this]() { |
| auto num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kC3rs1), [this]() { |
| auto num = encoding::inst16_format::ExtractCsRs1(inst_word_); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kC3rs2), [this]() { |
| auto num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCSRUimm5), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst32_format::ExtractIUimm5(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCdrs2), [this]() { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCfrs2), [this]() { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCrs1), [this]() { |
| auto num = encoding::c_r::ExtractRs1(inst_word_); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCrs2), [this]() { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kCsr), [this]() { |
| auto csr_indx = encoding::i_type::ExtractUImm12(inst_word_); |
| auto res = state_->csr_set()->GetCsr(csr_indx); |
| if (!res.ok()) { |
| return new generic::ImmediateOperand<uint32_t>(csr_indx); |
| } |
| auto* csr = res.value(); |
| return new generic::ImmediateOperand<uint32_t>(csr_indx, csr->name()); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kDrs1), [this]() { |
| int num = encoding::r_type::ExtractRs1(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kDrs2), [this]() { |
| int num = encoding::r_type::ExtractRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kDrs3), [this]() { |
| int num = encoding::r4_type::ExtractRs3(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kFrs1), [this]() { |
| int num = encoding::r_type::ExtractRs1(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kFrs2), [this]() { |
| int num = encoding::r_type::ExtractRs2(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kFrs3), [this]() { |
| int num = encoding::r4_type::ExtractRs3(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kFs1), [this]() { |
| const int num = encoding::v_arith::ExtractRs1(inst_word_); |
| return GetRegisterSourceOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICbImm8), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst16_format::ExtractBimm(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiImm6), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::c_i::ExtractImm6(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiImm612), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst16_format::ExtractImm18(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiUimm6), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractUimm6(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiUimm6x4), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractCiImmW(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiUimm6x8), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractCiImmD(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiImm6x16), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst16_format::ExtractCiImm10(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICiwUimm8x4), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractCiwImm10(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICjImm11), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst16_format::ExtractJimm(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kIClUimm5x4), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractClImmW(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kIClUimm5x8), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractClImmD(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICssUimm6x4), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractCssImmW(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kICssUimm6x8), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst16_format::ExtractCssImmD(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kIImm12), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractImm12(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kIUimm5), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::inst32_format::ExtractRUimm5(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kJImm12), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractImm12(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kJImm20), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractJImm(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kPred), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::fence::ExtractPred(inst_word_)); |
| })); |
| source_op_getters_.insert(std::make_pair( |
| static_cast<int>(SourceOpEnum::kRm), [this]() -> SourceOperandInterface* { |
| uint32_t rm = (inst_word_ >> 12) & 0x7; |
| switch (rm) { |
| case 0: |
| return new generic::IntLiteralOperand<0>(); |
| case 1: |
| return new generic::IntLiteralOperand<1>(); |
| case 2: |
| return new generic::IntLiteralOperand<2>(); |
| case 3: |
| return new generic::IntLiteralOperand<3>(); |
| case 4: |
| return new generic::IntLiteralOperand<4>(); |
| case 5: |
| return new generic::IntLiteralOperand<5>(); |
| case 6: |
| return new generic::IntLiteralOperand<6>(); |
| case 7: |
| return new generic::IntLiteralOperand<7>(); |
| default: |
| return nullptr; |
| } |
| })); |
| source_op_getters_.insert(std::make_pair( |
| static_cast<int>(SourceOpEnum::kRd), [this]() -> SourceOperandInterface* { |
| int num = encoding::r_type::ExtractRd(inst_word_); |
| if (num == 0) |
| return new generic::IntLiteralOperand<0>({1}, xreg_alias_[0]); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert(std::make_pair( |
| static_cast<int>(SourceOpEnum::kRs1), |
| [this]() -> SourceOperandInterface* { |
| int num = encoding::r_type::ExtractRs1(inst_word_); |
| if (num == 0) |
| return new generic::IntLiteralOperand<0>({1}, xreg_alias_[0]); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert(std::make_pair( |
| static_cast<int>(SourceOpEnum::kRs2), |
| [this]() -> SourceOperandInterface* { |
| int num = encoding::r_type::ExtractRs2(inst_word_); |
| if (num == 0) |
| return new generic::IntLiteralOperand<0>({1}, xreg_alias_[0]); |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| xreg_alias_[num]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kSImm12), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractSImm(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kSucc), [this]() { |
| return new generic::ImmediateOperand<uint32_t>( |
| encoding::fence::ExtractSucc(inst_word_)); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kUImm20), [this]() { |
| return new generic::ImmediateOperand<int32_t>( |
| encoding::inst32_format::ExtractUImm(inst_word_)); |
| })); |
| Insert(source_op_getters_, SourceOpEnum::kVm, |
| [this]() -> SourceOperandInterface* { |
| auto vm = encoding::v_arith::ExtractVm(inst_word_); |
| return new generic::ImmediateOperand<bool>( |
| vm, absl::StrCat("vm.", vm ? "t" : "f")); |
| }); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kX0), [this]() { |
| return new generic::IntLiteralOperand<0>({1}, xreg_alias_[0]); |
| })); |
| source_op_getters_.insert( |
| std::make_pair(static_cast<int>(SourceOpEnum::kX2), [this]() { |
| return GetRegisterSourceOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, 2), xreg_alias_[2]); |
| })); |
| source_op_getters_.insert(std::make_pair( |
| static_cast<int>(SourceOpEnum::kNone), []() { return nullptr; })); |
| } |
| |
| void RiscV32GVecEncoding::InitializeDestinationOperandGetters() { |
| // Destination operand getters. |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kC3drd), [this](int latency) { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), latency, |
| xreg_alias_[num]); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kC3frd), [this](int latency) { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kC3rd), [this](int latency) { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kC3rs1), [this](int latency) { |
| int num = encoding::inst16_format::ExtractClRs1(inst_word_); |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), latency, |
| xreg_alias_[num]); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kCsr), [this](int latency) { |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, RiscVState::kCsrName, latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kDrd), [this](int latency) { |
| int num = encoding::r_type::ExtractRd(inst_word_); |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num), latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kFd), [this](int latency) { |
| int num = encoding::v_arith::ExtractRd(inst_word_); |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num), latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kFrd), [this](int latency) { |
| int num = encoding::r_type::ExtractRd(inst_word_); |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kFregPrefix, num), latency); |
| })); |
| dest_op_getters_.insert(std::make_pair( |
| static_cast<int>(DestOpEnum::kNextPc), [this](int latency) { |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, RiscVState::kPcName, latency); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kRd), |
| [this](int latency) -> DestinationOperandInterface* { |
| int num = encoding::r_type::ExtractRd(inst_word_); |
| if (num == 0) { |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, "X0Dest", 0, xreg_alias_[0]); |
| } else { |
| return GetRegisterDestinationOp<RVFpRegister>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, num), |
| latency, xreg_alias_[num]); |
| } |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kX0), [this](int) { |
| return GetRegisterDestinationOp<RV32Register>(state_, "X0Dest", 0, |
| xreg_alias_[0]); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kX1), [this](int latency) { |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, 1), latency, |
| xreg_alias_[1]); |
| })); |
| dest_op_getters_.insert( |
| std::make_pair(static_cast<int>(DestOpEnum::kX2), [this](int latency) { |
| return GetRegisterDestinationOp<RV32Register>( |
| state_, absl::StrCat(RiscVState::kXregPrefix, 2), latency, |
| xreg_alias_[2]); |
| })); |
| dest_op_getters_.insert(std::make_pair( |
| static_cast<int>(DestOpEnum::kFflags), [this](int latency) { |
| return GetCSRSetBitsDestinationOp<uint32_t>(state_, "fflags", latency, |
| ""); |
| })); |
| dest_op_getters_.insert(std::make_pair(static_cast<int>(DestOpEnum::kNone), |
| [](int latency) { return nullptr; })); |
| } |
| |
| // Parse the instruction word to determine the opcode. |
| void RiscV32GVecEncoding::ParseInstruction(uint32_t inst_word) { |
| inst_word_ = inst_word; |
| if ((inst_word_ & 0x3) == 3) { |
| opcode_ = mpact::sim::riscv::encoding::DecodeRiscV32GV(inst_word_); |
| return; |
| } |
| |
| opcode_ = mpact::sim::riscv::encoding::DecodeRiscVCInst16( |
| static_cast<uint16_t>(inst_word_ & 0xffff)); |
| } |
| |
| void RiscV32GVecEncoding::InitializeComplexResourceOperandGetters() { |
| complex_resource_getters_.insert( |
| std::make_pair(static_cast<int>(ComplexResourceEnum::kNone), |
| [](int begin, int end) { return nullptr; })); |
| } |
| |
| ResourceOperandInterface* RiscV32GVecEncoding::GetComplexResourceOperand( |
| SlotEnum, int, OpcodeEnum, ComplexResourceEnum resource, int begin, |
| int end) { |
| int index = static_cast<int>(resource); |
| auto iter = complex_resource_getters_.find(index); |
| if (iter == complex_resource_getters_.end()) { |
| LOG(WARNING) << "No complex resource getter found for resource: " << index; |
| return nullptr; |
| } |
| return (iter->second)(begin, end); |
| } |
| |
| void RiscV32GVecEncoding::InitializeSimpleResourceGetters() { |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kNone), []() { return nullptr; })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3drd), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3drs2), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3frd), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3frs2), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3rd), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractClRd(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3rs1), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractClRs1(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kC3rs2), |
| [this]() -> generic::SimpleResource* { |
| int num = encoding::inst16_format::ExtractCsRs2(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kCdrs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kCfrs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kCrs1), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::c_r::ExtractRs1(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kCrs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::c_r::ExtractRs2(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert( |
| std::make_pair(static_cast<int>(SimpleResourceEnum::kCsr), |
| [this]() -> generic::SimpleResource* { |
| return resource_pool_->GetOrAddResource("csr"); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kDrd), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRd(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kDrs1), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::a_type::ExtractRs1(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kDrs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::a_type::ExtractRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kDrs3), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRs3(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kFrd), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRd(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kFrs1), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRs1(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kFrs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRs2(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kFrs3), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::r4_type::ExtractRs3(inst_word_); |
| return resource_pool_->GetOrAddResource(absl::StrCat("d", num)); |
| })); |
| simple_resource_getters_.insert( |
| std::make_pair(static_cast<int>(SimpleResourceEnum::kNextPc), |
| [this]() -> generic::SimpleResource* { |
| return resource_pool_->GetOrAddResource("next_pc"); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kRd), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::a_type::ExtractRd(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kRs1), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::a_type::ExtractRs1(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| simple_resource_getters_.insert(std::make_pair( |
| static_cast<int>(SimpleResourceEnum::kRs2), |
| [this]() -> generic::SimpleResource* { |
| auto num = encoding::a_type::ExtractRs2(inst_word_); |
| // If num is 0 it refers to the zero register. No resource. |
| if (num == 0) return nullptr; |
| return resource_pool_->GetOrAddResource(absl::StrCat("x", num)); |
| })); |
| // X0 is constant 0, so no resource issue. |
| simple_resource_getters_.insert( |
| std::make_pair(static_cast<int>(SimpleResourceEnum::kX0), |
| []() -> generic::SimpleResource* { return nullptr; })); |
| simple_resource_getters_.insert( |
| std::make_pair(static_cast<int>(SimpleResourceEnum::kX1), |
| [this]() -> generic::SimpleResource* { |
| return resource_pool_->GetOrAddResource("x1"); |
| })); |
| simple_resource_getters_.insert( |
| std::make_pair(static_cast<int>(SimpleResourceEnum::kX2), |
| [this]() -> generic::SimpleResource* { |
| return resource_pool_->GetOrAddResource("x2"); |
| })); |
| } |
| |
| ResourceOperandInterface* RiscV32GVecEncoding::GetSimpleResourceOperand( |
| SlotEnum, int, OpcodeEnum, SimpleResourceVector& resource_vec, int end) { |
| if (resource_vec.empty()) return nullptr; |
| auto* resource_set = resource_pool_->CreateResourceSet(); |
| for (auto resource_enum : resource_vec) { |
| int index = static_cast<int>(resource_enum); |
| auto iter = simple_resource_getters_.find(index); |
| if (iter == simple_resource_getters_.end()) { |
| LOG(WARNING) << "No getter for simple resource " << index; |
| continue; |
| } |
| auto* resource = (iter->second)(); |
| auto status = resource_set->AddResource(resource); |
| if (!status.ok()) { |
| LOG(ERROR) << "Unable to add resource to resource set (" |
| << static_cast<int>(resource_enum) << ")"; |
| } |
| } |
| auto* op = new generic::SimpleResourceOperand(resource_set, end, |
| resource_delay_line_); |
| return op; |
| } |
| |
| DestinationOperandInterface* RiscV32GVecEncoding::GetDestination( |
| SlotEnum, int, OpcodeEnum opcode, DestOpEnum dest_op, int dest_no, |
| int latency) { |
| int index = static_cast<int>(dest_op); |
| auto iter = dest_op_getters_.find(index); |
| if (iter == dest_op_getters_.end()) { |
| LOG(ERROR) << absl::StrCat("No getter for destination op enum value ", |
| index, "for instruction ", |
| kOpcodeNames[static_cast<int>(opcode)]); |
| return nullptr; |
| } |
| return (iter->second)(latency); |
| } |
| |
| SourceOperandInterface* RiscV32GVecEncoding::GetSource(SlotEnum, int, |
| OpcodeEnum opcode, |
| SourceOpEnum source_op, |
| int source_no) { |
| int index = static_cast<int>(source_op); |
| auto iter = source_op_getters_.find(index); |
| if (iter == source_op_getters_.end()) { |
| LOG(ERROR) << absl::StrCat("No getter for source op enum value ", index, |
| " for instruction ", |
| kOpcodeNames[static_cast<int>(opcode)]); |
| return nullptr; |
| } |
| return (iter->second)(); |
| } |
| |
| } // namespace isa32v |
| } // namespace riscv |
| } // namespace sim |
| } // namespace mpact |
