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https://github.com/vortexgpgpu/vortex.git
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a2cfeffcfe
Added ifndef statements for the vector extension anywhere they didn't exist already more ifdef statements more ifdef Update decode.cpp Update decode.cpp Update decode.cpp
1674 lines
No EOL
52 KiB
C++
1674 lines
No EOL
52 KiB
C++
// Copyright © 2019-2023
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <iostream>
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#include <stdlib.h>
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#include <unistd.h>
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#include <math.h>
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#include <bitset>
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#include <climits>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <util.h>
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#include <rvfloats.h>
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#include "emulator.h"
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#include "instr.h"
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#include "core.h"
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#ifdef EXT_V_ENABLE
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#include "processor_impl.h"
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#endif
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#include "VX_types.h"
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using namespace vortex;
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inline uint64_t nan_box(uint32_t value) {
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return value | 0xffffffff00000000;
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}
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inline bool is_nan_boxed(uint64_t value) {
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return (uint32_t(value >> 32) == 0xffffffff);
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}
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inline int64_t check_boxing(int64_t a) {
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if (is_nan_boxed(a))
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return a;
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return nan_box(0x7fc00000); // NaN
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}
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void Emulator::execute(const Instr &instr, uint32_t wid, instr_trace_t *trace) {
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auto& warp = warps_.at(wid);
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assert(warp.tmask.any());
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// initialize instruction trace
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trace->cid = core_->id();
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trace->wid = wid;
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trace->PC = warp.PC;
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trace->tmask = warp.tmask;
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trace->dst_reg = {instr.getRDType(), instr.getRDest()};
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auto next_pc = warp.PC + 4;
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auto next_tmask = warp.tmask;
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auto opcode = instr.getOpcode();
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auto func2 = instr.getFunc2();
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auto func3 = instr.getFunc3();
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auto func7 = instr.getFunc7();
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auto rdest = instr.getRDest();
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auto rsrc0 = instr.getRSrc(0);
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auto rsrc1 = instr.getRSrc(1);
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auto rsrc2 = instr.getRSrc(2);
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auto immsrc = sext((Word)instr.getImm(), 32);
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auto num_threads = arch_.num_threads();
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uint32_t thread_start = 0;
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for (; thread_start < num_threads; ++thread_start) {
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if (warp.tmask.test(thread_start))
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break;
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}
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int32_t thread_last = num_threads - 1;
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for (; thread_last >= 0; --thread_last) {
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if (warp.tmask.test(thread_last))
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break;
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}
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std::vector<reg_data_t[3]> rsdata(num_threads);
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std::vector<reg_data_t> rddata(num_threads);
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auto num_rsrcs = instr.getNRSrc();
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if (num_rsrcs) {
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for (uint32_t i = 0; i < num_rsrcs; ++i) {
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auto type = instr.getRSType(i);
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auto reg = instr.getRSrc(i);
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switch (type) {
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case RegType::Integer:
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DPH(2, "Src" << i << " Reg: " << type << reg << "={");
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for (uint32_t t = 0; t < num_threads; ++t) {
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if (t) DPN(2, ", ");
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if (!warp.tmask.test(t)) {
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DPN(2, "-");
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continue;
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}
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rsdata[t][i].u = warp.ireg_file.at(t)[reg];
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DPN(2, "0x" << std::hex << rsdata[t][i].i << std::dec);
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}
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DPN(2, "}" << std::endl);
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break;
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case RegType::Float:
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DPH(2, "Src" << i << " Reg: " << type << reg << "={");
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for (uint32_t t = 0; t < num_threads; ++t) {
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if (t) DPN(2, ", ");
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if (!warp.tmask.test(t)) {
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DPN(2, "-");
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continue;
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}
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rsdata[t][i].u64 = warp.freg_file.at(t)[reg];
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DPN(2, "0x" << std::hex << rsdata[t][i].f << std::dec);
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}
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DPN(2, "}" << std::endl);
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break;
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#ifdef EXT_V_ENABLE
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case RegType::Vector:
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break;
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#endif
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default:
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break;
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}
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}
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}
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bool rd_write = false;
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switch (opcode) {
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case Opcode::LUI: {
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// RV32I: LUI
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trace->fu_type = FUType::ALU;
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trace->alu_type = AluType::ARITH;
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for (uint32_t t = thread_start; t < num_threads; ++t) {
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if (!warp.tmask.test(t))
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continue;
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rddata[t].i = immsrc;
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}
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rd_write = true;
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break;
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}
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case Opcode::AUIPC: {
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// RV32I: AUIPC
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trace->fu_type = FUType::ALU;
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trace->alu_type = AluType::ARITH;
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for (uint32_t t = thread_start; t < num_threads; ++t) {
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if (!warp.tmask.test(t))
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continue;
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rddata[t].i = immsrc + warp.PC;
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}
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rd_write = true;
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break;
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}
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case Opcode::R: {
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trace->fu_type = FUType::ALU;
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trace->alu_type = AluType::ARITH;
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trace->src_regs[0] = {RegType::Integer, rsrc0};
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trace->src_regs[1] = {RegType::Integer, rsrc1};
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for (uint32_t t = thread_start; t < num_threads; ++t) {
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if (!warp.tmask.test(t))
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continue;
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if (func7 == 0x7) {
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auto value = rsdata[t][0].i;
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auto cond = rsdata[t][1].i;
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if (func3 == 0x5) {
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// CZERO.EQZ
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rddata[t].i = (cond == 0) ? 0 : value;
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trace->alu_type = AluType::ARITH;
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} else
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if (func3 == 0x7) {
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// CZERO.NEZ
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rddata[t].i = (cond != 0) ? 0 : value;
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trace->alu_type = AluType::ARITH;
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} else {
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std::abort();
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}
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} else
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if (func7 & 0x1) {
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switch (func3) {
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case 0: {
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// RV32M: MUL
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rddata[t].i = rsdata[t][0].i * rsdata[t][1].i;
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trace->alu_type = AluType::IMUL;
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break;
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}
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case 1: {
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// RV32M: MULH
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auto first = static_cast<DWordI>(rsdata[t][0].i);
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auto second = static_cast<DWordI>(rsdata[t][1].i);
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rddata[t].i = (first * second) >> XLEN;
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trace->alu_type = AluType::IMUL;
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break;
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}
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case 2: {
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// RV32M: MULHSU
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auto first = static_cast<DWordI>(rsdata[t][0].i);
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auto second = static_cast<DWord>(rsdata[t][1].u);
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rddata[t].i = (first * second) >> XLEN;
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trace->alu_type = AluType::IMUL;
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break;
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}
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case 3: {
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// RV32M: MULHU
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auto first = static_cast<DWord>(rsdata[t][0].u);
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auto second = static_cast<DWord>(rsdata[t][1].u);
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rddata[t].i = (first * second) >> XLEN;
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trace->alu_type = AluType::IMUL;
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break;
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}
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case 4: {
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// RV32M: DIV
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auto dividen = rsdata[t][0].i;
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auto divisor = rsdata[t][1].i;
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auto largest_negative = WordI(1) << (XLEN-1);
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if (divisor == 0) {
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rddata[t].i = -1;
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} else if (dividen == largest_negative && divisor == -1) {
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rddata[t].i = dividen;
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} else {
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rddata[t].i = dividen / divisor;
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}
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 5: {
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// RV32M: DIVU
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auto dividen = rsdata[t][0].u;
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auto divisor = rsdata[t][1].u;
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if (divisor == 0) {
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rddata[t].i = -1;
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} else {
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rddata[t].i = dividen / divisor;
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}
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 6: {
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// RV32M: REM
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auto dividen = rsdata[t][0].i;
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auto divisor = rsdata[t][1].i;
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auto largest_negative = WordI(1) << (XLEN-1);
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if (rsdata[t][1].i == 0) {
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rddata[t].i = dividen;
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} else if (dividen == largest_negative && divisor == -1) {
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rddata[t].i = 0;
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} else {
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rddata[t].i = dividen % divisor;
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}
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 7: {
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// RV32M: REMU
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auto dividen = rsdata[t][0].u;
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auto divisor = rsdata[t][1].u;
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if (rsdata[t][1].i == 0) {
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rddata[t].i = dividen;
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} else {
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rddata[t].i = dividen % divisor;
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}
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trace->alu_type = AluType::IDIV;
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break;
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}
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default:
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std::abort();
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}
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} else {
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switch (func3) {
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case 0: {
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if (func7 & 0x20) {
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// RV32I: SUB
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rddata[t].i = rsdata[t][0].i - rsdata[t][1].i;
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} else {
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// RV32I: ADD
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rddata[t].i = rsdata[t][0].i + rsdata[t][1].i;
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}
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break;
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}
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case 1: {
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// RV32I: SLL
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Word shamt_mask = (Word(1) << log2up(XLEN)) - 1;
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Word shamt = rsdata[t][1].i & shamt_mask;
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rddata[t].i = rsdata[t][0].i << shamt;
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break;
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}
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case 2: {
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// RV32I: SLT
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rddata[t].i = rsdata[t][0].i < rsdata[t][1].i;
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break;
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}
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case 3: {
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// RV32I: SLTU
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rddata[t].i = rsdata[t][0].u < rsdata[t][1].u;
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break;
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}
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case 4: {
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// RV32I: XOR
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rddata[t].i = rsdata[t][0].i ^ rsdata[t][1].i;
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break;
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}
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case 5: {
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Word shamt_mask = ((Word)1 << log2up(XLEN)) - 1;
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Word shamt = rsdata[t][1].i & shamt_mask;
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if (func7 & 0x20) {
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// RV32I: SRA
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rddata[t].i = rsdata[t][0].i >> shamt;
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} else {
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// RV32I: SRL
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rddata[t].i = rsdata[t][0].u >> shamt;
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}
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break;
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}
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case 6: {
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// RV32I: OR
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rddata[t].i = rsdata[t][0].i | rsdata[t][1].i;
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break;
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}
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case 7: {
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// RV32I: AND
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rddata[t].i = rsdata[t][0].i & rsdata[t][1].i;
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break;
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}
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default:
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std::abort();
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}
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}
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}
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rd_write = true;
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break;
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}
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case Opcode::I: {
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trace->fu_type = FUType::ALU;
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trace->alu_type = AluType::ARITH;
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trace->src_regs[0] = {RegType::Integer, rsrc0};
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for (uint32_t t = thread_start; t < num_threads; ++t) {
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if (!warp.tmask.test(t))
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continue;
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switch (func3) {
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case 0: {
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// RV32I: ADDI
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rddata[t].i = rsdata[t][0].i + immsrc;
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break;
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}
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case 1: {
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// RV32I: SLLI
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rddata[t].i = rsdata[t][0].i << immsrc;
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break;
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}
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case 2: {
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// RV32I: SLTI
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rddata[t].i = rsdata[t][0].i < WordI(immsrc);
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break;
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}
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case 3: {
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// RV32I: SLTIU
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rddata[t].i = rsdata[t][0].u < immsrc;
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break;
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}
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case 4: {
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// RV32I: XORI
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rddata[t].i = rsdata[t][0].i ^ immsrc;
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break;
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}
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case 5: {
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if (func7 & 0x20) {
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// RV32I: SRAI
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Word result = rsdata[t][0].i >> immsrc;
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rddata[t].i = result;
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} else {
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// RV32I: SRLI
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Word result = rsdata[t][0].u >> immsrc;
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rddata[t].i = result;
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}
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break;
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}
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case 6: {
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// RV32I: ORI
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rddata[t].i = rsdata[t][0].i | immsrc;
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break;
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}
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case 7: {
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// RV32I: ANDI
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rddata[t].i = rsdata[t][0].i & immsrc;
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break;
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}
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}
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}
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rd_write = true;
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break;
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}
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case Opcode::R_W: {
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trace->fu_type = FUType::ALU;
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trace->alu_type = AluType::ARITH;
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trace->src_regs[0] = {RegType::Integer, rsrc0};
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trace->src_regs[1] = {RegType::Integer, rsrc1};
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for (uint32_t t = thread_start; t < num_threads; ++t) {
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if (!warp.tmask.test(t))
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continue;
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if (func7 & 0x1) {
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switch (func3) {
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case 0: {
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// RV64M: MULW
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int32_t product = (int32_t)rsdata[t][0].i * (int32_t)rsdata[t][1].i;
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rddata[t].i = sext((uint64_t)product, 32);
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trace->alu_type = AluType::IMUL;
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break;
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}
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case 4: {
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// RV64M: DIVW
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int32_t dividen = (int32_t)rsdata[t][0].i;
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int32_t divisor = (int32_t)rsdata[t][1].i;
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int32_t quotient;
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int32_t largest_negative = 0x80000000;
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if (divisor == 0){
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quotient = -1;
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} else if (dividen == largest_negative && divisor == -1) {
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quotient = dividen;
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} else {
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quotient = dividen / divisor;
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}
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rddata[t].i = sext((uint64_t)quotient, 32);
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 5: {
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// RV64M: DIVUW
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uint32_t dividen = (uint32_t)rsdata[t][0].i;
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uint32_t divisor = (uint32_t)rsdata[t][1].i;
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uint32_t quotient;
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if (divisor == 0){
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quotient = -1;
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} else {
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quotient = dividen / divisor;
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}
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rddata[t].i = sext((uint64_t)quotient, 32);
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 6: {
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// RV64M: REMW
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int32_t dividen = (uint32_t)rsdata[t][0].i;
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int32_t divisor = (uint32_t)rsdata[t][1].i;
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int32_t remainder;
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int32_t largest_negative = 0x80000000;
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if (divisor == 0){
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remainder = dividen;
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} else if (dividen == largest_negative && divisor == -1) {
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remainder = 0;
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} else {
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remainder = dividen % divisor;
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}
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rddata[t].i = sext((uint64_t)remainder, 32);
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trace->alu_type = AluType::IDIV;
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break;
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}
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case 7: {
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// RV64M: REMUW
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uint32_t dividen = (uint32_t)rsdata[t][0].i;
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uint32_t divisor = (uint32_t)rsdata[t][1].i;
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uint32_t remainder;
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if (divisor == 0){
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remainder = dividen;
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} else {
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remainder = dividen % divisor;
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}
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rddata[t].i = sext((uint64_t)remainder, 32);
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trace->alu_type = AluType::IDIV;
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break;
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}
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default:
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std::abort();
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}
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} else {
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switch (func3) {
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case 0: {
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if (func7 & 0x20){
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// RV64I: SUBW
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uint32_t result = (uint32_t)rsdata[t][0].i - (uint32_t)rsdata[t][1].i;
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rddata[t].i = sext((uint64_t)result, 32);
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}
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else{
|
|
// RV64I: ADDW
|
|
uint32_t result = (uint32_t)rsdata[t][0].i + (uint32_t)rsdata[t][1].i;
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
}
|
|
break;
|
|
}
|
|
case 1: {
|
|
// RV64I: SLLW
|
|
uint32_t shamt_mask = 0x1F;
|
|
uint32_t shamt = rsdata[t][1].i & shamt_mask;
|
|
uint32_t result = (uint32_t)rsdata[t][0].i << shamt;
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
break;
|
|
}
|
|
case 5: {
|
|
uint32_t shamt_mask = 0x1F;
|
|
uint32_t shamt = rsdata[t][1].i & shamt_mask;
|
|
uint32_t result;
|
|
if (func7 & 0x20) {
|
|
// RV64I: SRAW
|
|
result = (int32_t)rsdata[t][0].i >> shamt;
|
|
} else {
|
|
// RV64I: SRLW
|
|
result = (uint32_t)rsdata[t][0].i >> shamt;
|
|
}
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
break;
|
|
}
|
|
default:
|
|
std::abort();
|
|
}
|
|
}
|
|
}
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::I_W: {
|
|
trace->fu_type = FUType::ALU;
|
|
trace->alu_type = AluType::ARITH;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
switch (func3) {
|
|
case 0: {
|
|
// RV64I: ADDIW
|
|
uint32_t result = (uint32_t)rsdata[t][0].i + (uint32_t)immsrc;
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
break;
|
|
}
|
|
case 1: {
|
|
// RV64I: SLLIW
|
|
uint32_t shamt_mask = 0x1F;
|
|
uint32_t shamt = immsrc & shamt_mask;
|
|
uint32_t result = rsdata[t][0].i << shamt;
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
break;
|
|
}
|
|
case 5: {
|
|
uint32_t shamt_mask = 0x1F;
|
|
uint32_t shamt = immsrc & shamt_mask;
|
|
uint32_t result;
|
|
if (func7 & 0x20) {
|
|
// RV64I: SRAIW
|
|
result = (int32_t)rsdata[t][0].i >> shamt;
|
|
} else {
|
|
// RV64I: SRLIW
|
|
result = (uint32_t)rsdata[t][0].i >> shamt;
|
|
}
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
break;
|
|
}
|
|
default:
|
|
std::abort();
|
|
}
|
|
}
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::B: {
|
|
trace->fu_type = FUType::ALU;
|
|
trace->alu_type = AluType::BRANCH;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {RegType::Integer, rsrc1};
|
|
bool all_taken = false;
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
bool curr_taken = false;
|
|
switch (func3) {
|
|
case 0: {
|
|
// RV32I: BEQ
|
|
if (rsdata[t][0].i == rsdata[t][1].i) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
case 1: {
|
|
// RV32I: BNE
|
|
if (rsdata[t][0].i != rsdata[t][1].i) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
case 4: {
|
|
// RV32I: BLT
|
|
if (rsdata[t][0].i < rsdata[t][1].i) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
case 5: {
|
|
// RV32I: BGE
|
|
if (rsdata[t][0].i >= rsdata[t][1].i) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
case 6: {
|
|
// RV32I: BLTU
|
|
if (rsdata[t][0].u < rsdata[t][1].u) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
case 7: {
|
|
// RV32I: BGEU
|
|
if (rsdata[t][0].u >= rsdata[t][1].u) {
|
|
next_pc = warp.PC + immsrc;
|
|
curr_taken = true;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
std::abort();
|
|
}
|
|
if (t == thread_start) {
|
|
all_taken = curr_taken;
|
|
} else {
|
|
if (all_taken != curr_taken) {
|
|
std::cout << "divergent branch! PC=0x" << std::hex << warp.PC << std::dec << " (#" << trace->uuid << ")\n" << std::flush;
|
|
std::abort();
|
|
}
|
|
}
|
|
}
|
|
trace->fetch_stall = true;
|
|
break;
|
|
}
|
|
case Opcode::JAL: {
|
|
// RV32I: JAL
|
|
trace->fu_type = FUType::ALU;
|
|
trace->alu_type = AluType::BRANCH;
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
rddata[t].i = next_pc;
|
|
}
|
|
next_pc = warp.PC + immsrc;
|
|
trace->fetch_stall = true;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::JALR: {
|
|
// RV32I: JALR
|
|
trace->fu_type = FUType::ALU;
|
|
trace->alu_type = AluType::BRANCH;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
rddata[t].i = next_pc;
|
|
}
|
|
next_pc = rsdata[thread_last][0].i + immsrc;
|
|
trace->fetch_stall = true;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::L:
|
|
case Opcode::FL: {
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::LOAD;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
auto trace_data = std::make_shared<LsuTraceData>(num_threads);
|
|
trace->data = trace_data;
|
|
if ((opcode == Opcode::L )
|
|
|| (opcode == Opcode::FL && func3 == 2)
|
|
|| (opcode == Opcode::FL && func3 == 3)) {
|
|
uint32_t data_bytes = 1 << (func3 & 0x3);
|
|
uint32_t data_width = 8 * data_bytes;
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint64_t mem_addr = rsdata[t][0].i + immsrc;
|
|
uint64_t read_data = 0;
|
|
this->dcache_read(&read_data, mem_addr, data_bytes);
|
|
trace_data->mem_addrs.at(t) = {mem_addr, data_bytes};
|
|
switch (func3) {
|
|
case 0: // RV32I: LB
|
|
case 1: // RV32I: LH
|
|
rddata[t].i = sext((Word)read_data, data_width);
|
|
break;
|
|
case 2:
|
|
if (opcode == Opcode::L) {
|
|
// RV32I: LW
|
|
rddata[t].i = sext((Word)read_data, data_width);
|
|
} else {
|
|
// RV32F: FLW
|
|
rddata[t].u64 = nan_box((uint32_t)read_data);
|
|
}
|
|
break;
|
|
case 3: // RV64I: LD
|
|
// RV32D: FLD
|
|
case 4: // RV32I: LBU
|
|
case 5: // RV32I: LHU
|
|
case 6: // RV64I: LWU
|
|
rddata[t].u64 = read_data;
|
|
break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
}
|
|
rd_write = true;
|
|
}
|
|
#ifdef EXT_V_ENABLE
|
|
else {
|
|
this->loadVector(instr, wid, rsdata);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
case Opcode::S:
|
|
case Opcode::FS: {
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::STORE;
|
|
auto data_type = (opcode == Opcode::FS) ? RegType::Float : RegType::Integer;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {data_type, rsrc1};
|
|
auto trace_data = std::make_shared<LsuTraceData>(num_threads);
|
|
trace->data = trace_data;
|
|
if ((opcode == Opcode::S)
|
|
|| (opcode == Opcode::FS && func3 == 2)
|
|
|| (opcode == Opcode::FS && func3 == 3)) {
|
|
uint32_t data_bytes = 1 << (func3 & 0x3);
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint64_t mem_addr = rsdata[t][0].i + immsrc;
|
|
uint64_t write_data = rsdata[t][1].u64;
|
|
trace_data->mem_addrs.at(t) = {mem_addr, data_bytes};
|
|
switch (func3) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
this->dcache_write(&write_data, mem_addr, data_bytes);
|
|
break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
}
|
|
}
|
|
#ifdef EXT_V_ENABLE
|
|
else {
|
|
this->storeVector(instr, wid, rsdata);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
case Opcode::AMO: {
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::LOAD;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {RegType::Integer, rsrc1};
|
|
auto trace_data = std::make_shared<LsuTraceData>(num_threads);
|
|
trace->data = trace_data;
|
|
auto amo_type = func7 >> 2;
|
|
uint32_t data_bytes = 1 << (func3 & 0x3);
|
|
uint32_t data_width = 8 * data_bytes;
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint64_t mem_addr = rsdata[t][0].u;
|
|
trace_data->mem_addrs.at(t) = {mem_addr, data_bytes};
|
|
if (amo_type == 0x02) { // LR
|
|
uint64_t read_data = 0;
|
|
this->dcache_read(&read_data, mem_addr, data_bytes);
|
|
this->dcache_amo_reserve(mem_addr);
|
|
rddata[t].i = sext((Word)read_data, data_width);
|
|
} else
|
|
if (amo_type == 0x03) { // SC
|
|
if (this->dcache_amo_check(mem_addr)) {
|
|
this->dcache_write(&rsdata[t][1].u64, mem_addr, data_bytes);
|
|
rddata[t].i = 0;
|
|
} else {
|
|
rddata[t].i = 1;
|
|
}
|
|
} else {
|
|
uint64_t read_data = 0;
|
|
this->dcache_read(&read_data, mem_addr, data_bytes);
|
|
auto read_data_i = sext((WordI)read_data, data_width);
|
|
auto rs1_data_i = sext((WordI)rsdata[t][1].u64, data_width);
|
|
auto read_data_u = zext((Word)read_data, data_width);
|
|
auto rs1_data_u = zext((Word)rsdata[t][1].u64, data_width);
|
|
uint64_t result;
|
|
switch (amo_type) {
|
|
case 0x00: // AMOADD
|
|
result = read_data_i + rs1_data_i;
|
|
break;
|
|
case 0x01: // AMOSWAP
|
|
result = rs1_data_u;
|
|
break;
|
|
case 0x04: // AMOXOR
|
|
result = read_data_u ^ rs1_data_u;
|
|
break;
|
|
case 0x08: // AMOOR
|
|
result = read_data_u | rs1_data_u;
|
|
break;
|
|
case 0x0c: // AMOAND
|
|
result = read_data_u & rs1_data_u;
|
|
break;
|
|
case 0x10: // AMOMIN
|
|
result = std::min(read_data_i, rs1_data_i);
|
|
break;
|
|
case 0x14: // AMOMAX
|
|
result = std::max(read_data_i, rs1_data_i);
|
|
break;
|
|
case 0x18: // AMOMINU
|
|
result = std::min(read_data_u, rs1_data_u);
|
|
break;
|
|
case 0x1c: // AMOMAXU
|
|
result = std::max(read_data_u, rs1_data_u);
|
|
break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
this->dcache_write(&result, mem_addr, data_bytes);
|
|
rddata[t].i = read_data_i;
|
|
}
|
|
}
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::SYS: {
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint32_t csr_addr = immsrc;
|
|
Word csr_value;
|
|
if (func3 == 0) {
|
|
trace->fu_type = FUType::ALU;
|
|
trace->alu_type = AluType::SYSCALL;
|
|
trace->fetch_stall = true;
|
|
switch (csr_addr) {
|
|
case 0x000: // RV32I: ECALL
|
|
this->trigger_ecall(); // Re-added for riscv-vector test functionality
|
|
break;
|
|
case 0x001: // RV32I: EBREAK
|
|
this->trigger_ebreak(); // Re-added for riscv-vector test functionality
|
|
break;
|
|
case 0x002: // RV32I: URET
|
|
case 0x102: // RV32I: SRET
|
|
case 0x302: // RV32I: MRET
|
|
break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
} else {
|
|
trace->fu_type = FUType::SFU;
|
|
// stall the fetch stage for FPU CSRs
|
|
trace->fetch_stall = (csr_addr <= VX_CSR_FCSR);
|
|
csr_value = this->get_csr(csr_addr, t, wid);
|
|
switch (func3) {
|
|
case 1: {
|
|
// RV32I: CSRRW
|
|
rddata[t].i = csr_value;
|
|
this->set_csr(csr_addr, rsdata[t][0].i, t, wid);
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->sfu_type = SfuType::CSRRW;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case 2: {
|
|
// RV32I: CSRRS
|
|
rddata[t].i = csr_value;
|
|
if (rsdata[t][0].i != 0) {
|
|
this->set_csr(csr_addr, csr_value | rsdata[t][0].i, t, wid);
|
|
}
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->sfu_type = SfuType::CSRRS;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case 3: {
|
|
// RV32I: CSRRC
|
|
rddata[t].i = csr_value;
|
|
if (rsdata[t][0].i != 0) {
|
|
this->set_csr(csr_addr, csr_value & ~rsdata[t][0].i, t, wid);
|
|
}
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->sfu_type = SfuType::CSRRC;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case 5: {
|
|
// RV32I: CSRRWI
|
|
rddata[t].i = csr_value;
|
|
this->set_csr(csr_addr, rsrc0, t, wid);
|
|
trace->sfu_type = SfuType::CSRRW;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case 6: {
|
|
// RV32I: CSRRSI;
|
|
rddata[t].i = csr_value;
|
|
if (rsrc0 != 0) {
|
|
this->set_csr(csr_addr, csr_value | rsrc0, t, wid);
|
|
}
|
|
trace->sfu_type = SfuType::CSRRS;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case 7: {
|
|
// RV32I: CSRRCI
|
|
rddata[t].i = csr_value;
|
|
if (rsrc0 != 0) {
|
|
this->set_csr(csr_addr, csr_value & ~rsrc0, t, wid);
|
|
}
|
|
trace->sfu_type = SfuType::CSRRC;
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case Opcode::FENCE: {
|
|
// RV32I: FENCE
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::FENCE;
|
|
break;
|
|
}
|
|
case Opcode::FCI: {
|
|
trace->fu_type = FUType::FPU;
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint32_t frm = this->get_fpu_rm(func3, t, wid);
|
|
uint32_t fflags = 0;
|
|
switch (func7) {
|
|
case 0x00: { // RV32F: FADD.S
|
|
rddata[t].u64 = nan_box(rv_fadd_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), frm, &fflags));
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x01: { // RV32D: FADD.D
|
|
rddata[t].u64 = rv_fadd_d(rsdata[t][0].u64, rsdata[t][1].u64, frm, &fflags);
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x04: { // RV32F: FSUB.S
|
|
rddata[t].u64 = nan_box(rv_fsub_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), frm, &fflags));
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x05: { // RV32D: FSUB.D
|
|
rddata[t].u64 = rv_fsub_d(rsdata[t][0].u64, rsdata[t][1].u64, frm, &fflags);
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x08: { // RV32F: FMUL.S
|
|
rddata[t].u64 = nan_box(rv_fmul_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), frm, &fflags));
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x09: { // RV32D: FMUL.D
|
|
rddata[t].u64 = rv_fmul_d(rsdata[t][0].u64, rsdata[t][1].u64, frm, &fflags);
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x0c: { // RV32F: FDIV.S
|
|
rddata[t].u64 = nan_box(rv_fdiv_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), frm, &fflags));
|
|
trace->fpu_type = FpuType::FDIV;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x0d: { // RV32D: FDIV.D
|
|
rddata[t].u64 = rv_fdiv_d(rsdata[t][0].u64, rsdata[t][1].u64, frm, &fflags);
|
|
trace->fpu_type = FpuType::FDIV;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x10: {
|
|
switch (func3) {
|
|
case 0: // RV32F: FSGNJ.S
|
|
rddata[t].u64 = nan_box(rv_fsgnj_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64)));
|
|
break;
|
|
case 1: // RV32F: FSGNJN.S
|
|
rddata[t].u64 = nan_box(rv_fsgnjn_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64)));
|
|
break;
|
|
case 2: // RV32F: FSGNJX.S
|
|
rddata[t].u64 = nan_box(rv_fsgnjx_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64)));
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x11: {
|
|
switch (func3) {
|
|
case 0: // RV32D: FSGNJ.D
|
|
rddata[t].u64 = rv_fsgnj_d(rsdata[t][0].u64, rsdata[t][1].u64);
|
|
break;
|
|
case 1: // RV32D: FSGNJN.D
|
|
rddata[t].u64 = rv_fsgnjn_d(rsdata[t][0].u64, rsdata[t][1].u64);
|
|
break;
|
|
case 2: // RV32D: FSGNJX.D
|
|
rddata[t].u64 = rv_fsgnjx_d(rsdata[t][0].u64, rsdata[t][1].u64);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x14: {
|
|
if (func3) {
|
|
// RV32F: FMAX.S
|
|
rddata[t].u64 = nan_box(rv_fmax_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), &fflags));
|
|
} else {
|
|
// RV32F: FMIN.S
|
|
rddata[t].u64 = nan_box(rv_fmin_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), &fflags));
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x15: {
|
|
if (func3) {
|
|
// RV32D: FMAX.D
|
|
rddata[t].u64 = rv_fmax_d(rsdata[t][0].u64, rsdata[t][1].u64, &fflags);
|
|
} else {
|
|
// RV32D: FMIN.D
|
|
rddata[t].u64 = rv_fmin_d(rsdata[t][0].u64, rsdata[t][1].u64, &fflags);
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x20: {
|
|
// RV32D: FCVT.S.D
|
|
rddata[t].u64 = nan_box(rv_dtof(rsdata[t][0].u64));
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x21: {
|
|
// RV32D: FCVT.D.S
|
|
rddata[t].u64 = rv_ftod(check_boxing(rsdata[t][0].u64));
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x2c: { // RV32F: FSQRT.S
|
|
rddata[t].u64 = nan_box(rv_fsqrt_s(check_boxing(rsdata[t][0].u64), frm, &fflags));
|
|
trace->fpu_type = FpuType::FSQRT;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x2d: { // RV32D: FSQRT.D
|
|
rddata[t].u64 = rv_fsqrt_d(rsdata[t][0].u64, frm, &fflags);
|
|
trace->fpu_type = FpuType::FSQRT;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x50: {
|
|
switch (func3) {
|
|
case 0:
|
|
// RV32F: FLE.S
|
|
rddata[t].i = rv_fle_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), &fflags);
|
|
break;
|
|
case 1:
|
|
// RV32F: FLT.S
|
|
rddata[t].i = rv_flt_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), &fflags);
|
|
break;
|
|
case 2:
|
|
// RV32F: FEQ.S
|
|
rddata[t].i = rv_feq_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), &fflags);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x51: {
|
|
switch (func3) {
|
|
case 0:
|
|
// RV32D: FLE.D
|
|
rddata[t].i = rv_fle_d(rsdata[t][0].u64, rsdata[t][1].u64, &fflags);
|
|
break;
|
|
case 1:
|
|
// RV32D: FLT.D
|
|
rddata[t].i = rv_flt_d(rsdata[t][0].u64, rsdata[t][1].u64, &fflags);
|
|
break;
|
|
case 2:
|
|
// RV32D: FEQ.D
|
|
rddata[t].i = rv_feq_d(rsdata[t][0].u64, rsdata[t][1].u64, &fflags);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
break;
|
|
}
|
|
case 0x60: {
|
|
switch (rsrc1) {
|
|
case 0:
|
|
// RV32F: FCVT.W.S
|
|
rddata[t].i = sext((uint64_t)rv_ftoi_s(check_boxing(rsdata[t][0].u64), frm, &fflags), 32);
|
|
break;
|
|
case 1:
|
|
// RV32F: FCVT.WU.S
|
|
rddata[t].i = sext((uint64_t)rv_ftou_s(check_boxing(rsdata[t][0].u64), frm, &fflags), 32);
|
|
break;
|
|
case 2:
|
|
// RV64F: FCVT.L.S
|
|
rddata[t].i = rv_ftol_s(check_boxing(rsdata[t][0].u64), frm, &fflags);
|
|
break;
|
|
case 3:
|
|
// RV64F: FCVT.LU.S
|
|
rddata[t].i = rv_ftolu_s(check_boxing(rsdata[t][0].u64), frm, &fflags);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FCVT;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x61: {
|
|
switch (rsrc1) {
|
|
case 0:
|
|
// RV32D: FCVT.W.D
|
|
rddata[t].i = sext((uint64_t)rv_ftoi_d(rsdata[t][0].u64, frm, &fflags), 32);
|
|
break;
|
|
case 1:
|
|
// RV32D: FCVT.WU.D
|
|
rddata[t].i = sext((uint64_t)rv_ftou_d(rsdata[t][0].u64, frm, &fflags), 32);
|
|
break;
|
|
case 2:
|
|
// RV64D: FCVT.L.D
|
|
rddata[t].i = rv_ftol_d(rsdata[t][0].u64, frm, &fflags);
|
|
break;
|
|
case 3:
|
|
// RV64D: FCVT.LU.D
|
|
rddata[t].i = rv_ftolu_d(rsdata[t][0].u64, frm, &fflags);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FCVT;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x68: {
|
|
switch (rsrc1) {
|
|
case 0:
|
|
// RV32F: FCVT.S.W
|
|
rddata[t].u64 = nan_box(rv_itof_s(rsdata[t][0].i, frm, &fflags));
|
|
break;
|
|
case 1:
|
|
// RV32F: FCVT.S.WU
|
|
rddata[t].u64 = nan_box(rv_utof_s(rsdata[t][0].i, frm, &fflags));
|
|
break;
|
|
case 2:
|
|
// RV64F: FCVT.S.L
|
|
rddata[t].u64 = nan_box(rv_ltof_s(rsdata[t][0].i, frm, &fflags));
|
|
break;
|
|
case 3:
|
|
// RV64F: FCVT.S.LU
|
|
rddata[t].u64 = nan_box(rv_lutof_s(rsdata[t][0].i, frm, &fflags));
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FCVT;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
break;
|
|
}
|
|
case 0x69: {
|
|
switch (rsrc1) {
|
|
case 0:
|
|
// RV32D: FCVT.D.W
|
|
rddata[t].u64 = rv_itof_d(rsdata[t][0].i, frm, &fflags);
|
|
break;
|
|
case 1:
|
|
// RV32D: FCVT.D.WU
|
|
rddata[t].u64 = rv_utof_d(rsdata[t][0].i, frm, &fflags);
|
|
break;
|
|
case 2:
|
|
// RV64D: FCVT.D.L
|
|
rddata[t].u64 = rv_ltof_d(rsdata[t][0].i, frm, &fflags);
|
|
break;
|
|
case 3:
|
|
// RV64D: FCVT.D.LU
|
|
rddata[t].u64 = rv_lutof_d(rsdata[t][0].i, frm, &fflags);
|
|
break;
|
|
}
|
|
trace->fpu_type = FpuType::FCVT;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
break;
|
|
}
|
|
case 0x70: {
|
|
if (func3) {
|
|
// RV32F: FCLASS.S
|
|
rddata[t].i = rv_fclss_s(check_boxing(rsdata[t][0].u64));
|
|
} else {
|
|
// RV32F: FMV.X.S
|
|
uint32_t result = (uint32_t)rsdata[t][0].u64;
|
|
rddata[t].i = sext((uint64_t)result, 32);
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x71: {
|
|
if (func3) {
|
|
// RV32D: FCLASS.D
|
|
rddata[t].i = rv_fclss_d(rsdata[t][0].u64);
|
|
} else {
|
|
// RV64D: FMV.X.D
|
|
rddata[t].i = rsdata[t][0].u64;
|
|
}
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
break;
|
|
}
|
|
case 0x78: { // RV32F: FMV.S.X
|
|
rddata[t].u64 = nan_box((uint32_t)rsdata[t][0].i);
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
break;
|
|
}
|
|
case 0x79: { // RV64D: FMV.D.X
|
|
rddata[t].u64 = rsdata[t][0].i;
|
|
trace->fpu_type = FpuType::FNCP;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
break;
|
|
}
|
|
}
|
|
this->update_fcrs(fflags, t, wid);
|
|
}
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::FMADD:
|
|
case Opcode::FMSUB:
|
|
case Opcode::FMNMADD:
|
|
case Opcode::FMNMSUB: {
|
|
trace->fpu_type = FpuType::FMA;
|
|
trace->src_regs[0] = {RegType::Float, rsrc0};
|
|
trace->src_regs[1] = {RegType::Float, rsrc1};
|
|
trace->src_regs[2] = {RegType::Float, rsrc2};
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
uint32_t frm = this->get_fpu_rm(func3, t, wid);
|
|
uint32_t fflags = 0;
|
|
switch (opcode) {
|
|
case Opcode::FMADD:
|
|
if (func2)
|
|
// RV32D: FMADD.D
|
|
rddata[t].u64 = rv_fmadd_d(rsdata[t][0].u64, rsdata[t][1].u64, rsdata[t][2].u64, frm, &fflags);
|
|
else
|
|
// RV32F: FMADD.S
|
|
rddata[t].u64 = nan_box(rv_fmadd_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), check_boxing(rsdata[t][2].u64), frm, &fflags));
|
|
break;
|
|
case Opcode::FMSUB:
|
|
if (func2)
|
|
// RV32D: FMSUB.D
|
|
rddata[t].u64 = rv_fmsub_d(rsdata[t][0].u64, rsdata[t][1].u64, rsdata[t][2].u64, frm, &fflags);
|
|
else
|
|
// RV32F: FMSUB.S
|
|
rddata[t].u64 = nan_box(rv_fmsub_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), check_boxing(rsdata[t][2].u64), frm, &fflags));
|
|
break;
|
|
case Opcode::FMNMADD:
|
|
if (func2)
|
|
// RV32D: FNMADD.D
|
|
rddata[t].u64 = rv_fnmadd_d(rsdata[t][0].u64, rsdata[t][1].u64, rsdata[t][2].u64, frm, &fflags);
|
|
else
|
|
// RV32F: FNMADD.S
|
|
rddata[t].u64 = nan_box(rv_fnmadd_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), check_boxing(rsdata[t][2].u64), frm, &fflags));
|
|
break;
|
|
case Opcode::FMNMSUB:
|
|
if (func2)
|
|
// RV32D: FNMSUB.D
|
|
rddata[t].u64 = rv_fnmsub_d(rsdata[t][0].u64, rsdata[t][1].u64, rsdata[t][2].u64, frm, &fflags);
|
|
else
|
|
// RV32F: FNMSUB.S
|
|
rddata[t].u64 = nan_box(rv_fnmsub_s(check_boxing(rsdata[t][0].u64), check_boxing(rsdata[t][1].u64), check_boxing(rsdata[t][2].u64), frm, &fflags));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
this->update_fcrs(fflags, t, wid);
|
|
}
|
|
rd_write = true;
|
|
break;
|
|
}
|
|
case Opcode::EXT1: {
|
|
switch (func7) {
|
|
case 0: {
|
|
switch (func3) {
|
|
case 0: {
|
|
// TMC
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::TMC;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->fetch_stall = true;
|
|
next_tmask.reset();
|
|
for (uint32_t t = 0; t < num_threads; ++t) {
|
|
next_tmask.set(t, rsdata.at(thread_last)[0].i & (1 << t));
|
|
}
|
|
} break;
|
|
case 1: {
|
|
// WSPAWN
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::WSPAWN;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {RegType::Integer, rsrc1};
|
|
trace->fetch_stall = true;
|
|
trace->data = std::make_shared<SFUTraceData>(rsdata.at(thread_last)[0].i, rsdata.at(thread_last)[1].i);
|
|
} break;
|
|
case 2: {
|
|
// SPLIT
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::SPLIT;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->fetch_stall = true;
|
|
|
|
auto stack_size = warp.ipdom_stack.size();
|
|
|
|
ThreadMask then_tmask, else_tmask;
|
|
auto not_pred = (rsrc1 != 0);
|
|
for (uint32_t t = 0; t < num_threads; ++t) {
|
|
auto cond = (warp.ireg_file.at(t).at(rsrc0) & 0x1) ^ not_pred;
|
|
then_tmask[t] = warp.tmask.test(t) && cond;
|
|
else_tmask[t] = warp.tmask.test(t) && !cond;
|
|
}
|
|
|
|
bool is_divergent = then_tmask.any() && else_tmask.any();
|
|
if (is_divergent) {
|
|
if (stack_size == ipdom_size_) {
|
|
std::cout << "IPDOM stack is full! size=" << stack_size << ", PC=0x" << std::hex << warp.PC << std::dec << " (#" << trace->uuid << ")\n" << std::flush;
|
|
std::abort();
|
|
}
|
|
// set new thread mask to the larger set
|
|
if (then_tmask.count() >= else_tmask.count()) {
|
|
next_tmask = then_tmask;
|
|
} else {
|
|
next_tmask = else_tmask;
|
|
}
|
|
// push reconvergence and not-taken thread mask onto the stack
|
|
auto ntaken_tmask = ~next_tmask & warp.tmask;
|
|
warp.ipdom_stack.emplace(warp.tmask, ntaken_tmask, next_pc);
|
|
}
|
|
// return divergent state
|
|
for (uint32_t t = thread_start; t < num_threads; ++t) {
|
|
rddata[t].i = stack_size;
|
|
}
|
|
rd_write = true;
|
|
} break;
|
|
case 3: {
|
|
// JOIN
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::JOIN;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->fetch_stall = true;
|
|
|
|
auto stack_ptr = warp.ireg_file.at(thread_last).at(rsrc0);
|
|
if (stack_ptr != warp.ipdom_stack.size()) {
|
|
if (warp.ipdom_stack.empty()) {
|
|
std::cout << "IPDOM stack is empty!\n" << std::flush;
|
|
std::abort();
|
|
}
|
|
if (warp.ipdom_stack.top().fallthrough) {
|
|
next_tmask = warp.ipdom_stack.top().orig_tmask;
|
|
warp.ipdom_stack.pop();
|
|
} else {
|
|
next_tmask = warp.ipdom_stack.top().else_tmask;
|
|
next_pc = warp.ipdom_stack.top().PC;
|
|
warp.ipdom_stack.top().fallthrough = true;
|
|
}
|
|
}
|
|
} break;
|
|
case 4: {
|
|
// BAR
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::BAR;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {RegType::Integer, rsrc1};
|
|
trace->fetch_stall = true;
|
|
trace->data = std::make_shared<SFUTraceData>(rsdata[thread_last][0].i, rsdata[thread_last][1].i);
|
|
} break;
|
|
case 5: {
|
|
// PRED
|
|
trace->fu_type = FUType::SFU;
|
|
trace->sfu_type = SfuType::PRED;
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
trace->src_regs[1] = {RegType::Integer, rsrc1};
|
|
trace->fetch_stall = true;
|
|
ThreadMask pred;
|
|
auto not_pred = rdest & 0x1;
|
|
for (uint32_t t = 0; t < num_threads; ++t) {
|
|
auto cond = (warp.ireg_file.at(t).at(rsrc0) & 0x1) ^ not_pred;
|
|
pred[t] = warp.tmask.test(t) && cond;
|
|
}
|
|
if (pred.any()) {
|
|
next_tmask &= pred;
|
|
} else {
|
|
next_tmask = warp.ireg_file.at(thread_last).at(rsrc1);
|
|
}
|
|
} break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
} break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
} break;
|
|
case Opcode::TCU:
|
|
{ //TODO - make it data-type flexible
|
|
uint32_t mem_bytes = 1;
|
|
DP(3, "mem_bytes=" << mem_bytes << std::endl);
|
|
uint16_t tc_size = this->get_csr(VX_TC_SIZE, 0, wid);
|
|
uint32_t TC_per_warp = this->get_csr(VX_TC_NUM, 0, wid);
|
|
|
|
DP(3, "tc_size=" << tc_size << std::endl);
|
|
DP(3, "TC_per_warp=" << TC_per_warp << std::endl);
|
|
|
|
//Number of loads - dependant on the thread config
|
|
uint32_t n_tiles = this->get_csr(VX_MAT_MUL_SIZE, 0, wid); //CSR instruction before MLOAD will ensure that this csr has value
|
|
int num_data_per_thread;
|
|
int num_data_per_thread_st;
|
|
uint32_t num_threads_actv;
|
|
uint32_t num_threads_actv_st;
|
|
uint32_t data_bytes_load;
|
|
uint32_t data_bytes_store;
|
|
uint32_t num_threads_per_tc = MAX (1, num_threads/TC_per_warp);
|
|
|
|
//LOAD
|
|
if(num_threads > tc_size*tc_size*n_tiles*TC_per_warp)
|
|
{
|
|
num_threads_actv = tc_size*tc_size*n_tiles*TC_per_warp;
|
|
num_data_per_thread = 1;
|
|
}
|
|
else
|
|
{
|
|
num_threads_actv = num_threads;
|
|
num_data_per_thread = (tc_size*tc_size*n_tiles)/num_threads_per_tc;
|
|
}
|
|
data_bytes_load = mem_bytes*num_data_per_thread;
|
|
|
|
//STORE
|
|
if(num_threads > tc_size*tc_size*TC_per_warp)
|
|
{
|
|
num_threads_actv_st = tc_size*tc_size*TC_per_warp;
|
|
num_data_per_thread_st = 1;
|
|
}
|
|
else
|
|
{
|
|
num_threads_actv_st = num_threads;
|
|
num_data_per_thread_st = (tc_size*tc_size)/num_threads_per_tc;
|
|
}
|
|
data_bytes_store = mem_bytes*num_data_per_thread_st;
|
|
|
|
DP(3, "Num Tiles=" << n_tiles << std::endl);
|
|
|
|
switch (func3) {
|
|
case 0:
|
|
{ //Matrix Load
|
|
|
|
DP (4, "TCU LOAD");
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::TCU_LOAD;
|
|
|
|
trace->src_regs[0] = {RegType::Integer, rsrc0};
|
|
auto trace_data = std::make_shared<LsuTraceData>(num_threads);
|
|
trace->data = trace_data;
|
|
|
|
for (uint32_t t = thread_start; t < num_threads_actv; ++t)
|
|
{
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
DP(3, "Thread ID" << t);
|
|
|
|
uint32_t base_addr = rsdata[t][0].i ;
|
|
trace_data->mem_addrs.at(t) = {base_addr, data_bytes_load};
|
|
|
|
//Load A or B (depends on immsrc)
|
|
int loop_offset = 0;
|
|
DP(3, "n_tiles = " << n_tiles << "; num_data_per_thread = " << num_data_per_thread <<std::endl);
|
|
for (int n=0; n<num_data_per_thread; n++)
|
|
{
|
|
Word* temp_ref = &(warp.ireg_file.at(t).at(rsrc0));
|
|
this->dcache_read(temp_ref, (base_addr+(n*mem_bytes)+(loop_offset*mem_bytes)), mem_bytes);
|
|
|
|
scratchpad[loop_offset + (immsrc*(n_tiles)*tc_size*tc_size) + (t*num_data_per_thread) + n] = *temp_ref;
|
|
DP(3, "Scratchpad Index: " << loop_offset + (immsrc*(n_tiles)*tc_size*tc_size) + (t*num_data_per_thread) + n << ", Value: " << scratchpad[loop_offset + (immsrc*(n_tiles)*tc_size*tc_size) + (t*num_data_per_thread) + n]);
|
|
}
|
|
}
|
|
rd_write = true;
|
|
} break;
|
|
case 1:
|
|
{
|
|
DP(4, "TCU STORE");
|
|
trace->fu_type = FUType::LSU;
|
|
trace->lsu_type = LsuType::TCU_STORE;
|
|
|
|
auto trace_data = std::make_shared<LsuTraceData>(num_threads);
|
|
trace->data = trace_data;
|
|
|
|
for (uint32_t t = thread_start; t < num_threads_actv_st; ++t)
|
|
{
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
|
|
DP(3, "Thread ID" << t);
|
|
uint32_t base_addr = rsdata[t][0].i ;
|
|
|
|
trace_data->mem_addrs.at(t) = {base_addr, data_bytes_store};
|
|
|
|
//Store C
|
|
for (int n=0; n<num_data_per_thread_st; n++)
|
|
{
|
|
Word* temp_ref = &(warp.ireg_file.at(t).at(rsrc0));
|
|
*temp_ref = scratchpad[(n_tiles*tc_size*tc_size*2) + (t*num_data_per_thread_st) + n];
|
|
|
|
this->dcache_write(temp_ref, base_addr+(n*mem_bytes), mem_bytes);
|
|
}
|
|
}
|
|
//Clear the scratchpad
|
|
for(long unsigned int i=0 ; i < scratchpad.size(); i++)
|
|
{
|
|
scratchpad[i] = 0;
|
|
}
|
|
}
|
|
break;
|
|
case 2:
|
|
{ //Matrix Multiply
|
|
DP(4, "TCU MULTIPLY MAT");
|
|
trace->fu_type = FUType::TCU;
|
|
trace->tcu_type = TCUType::TCU_MUL;
|
|
uint32_t threads_per_tc = MAX (1, num_threads/TC_per_warp);
|
|
for (uint32_t t = thread_start; t < num_threads_actv; ++t)
|
|
{
|
|
if (!warp.tmask.test(t))
|
|
continue;
|
|
|
|
DP(3, "Thread ID" << t);
|
|
//TC operation [only 1 thread in 1 warp needs to do this]
|
|
if (t%threads_per_tc == 0)
|
|
{
|
|
/*
|
|
// TODO : Fix needed for functional correctness
|
|
// TODO : change to systolic array implementation
|
|
uint32_t thread_offset = t*(tc_size*tc_size);
|
|
|
|
int loop_offset = 0;
|
|
int offset_b = n_tiles*n_tiles*n_tiles*tc_size*tc_size;
|
|
uint32_t accu_offset = (n_tiles)*(n_tiles)*(n_tiles)*tc_size*tc_size*2;
|
|
for(int tiles = 0 ; tiles < n_tiles ; tiles++) //What's the HW implication of this?? A counter implementation?
|
|
{
|
|
for (int i = 0; i < tc_size; i++) { //ROW-1
|
|
for (int j = 0; j < tc_size; j++) { //COL-2
|
|
int sum = 0;
|
|
for (int k = 0; k < tc_size; k++)
|
|
{ //COL-1
|
|
sum = sum + scratchpad[loop_offset + thread_offset*n_tiles + i * tc_size + k] *scratchpad[loop_offset + thread_offset*n_tiles + offset_b + (k * tc_size + j)];
|
|
}
|
|
scratchpad[accu_offset + thread_offset +(i * tc_size + j)] += sum; //[i * col2 + j] = sum
|
|
DP(3, "Scratchpad Index: " << accu_offset + (i * tc_size + j) << " , Value=" << scratchpad[accu_offset + (i * tc_size + j)]);
|
|
}
|
|
}
|
|
loop_offset += tc_size*tc_size; //Move to the next tiled matmul fragment
|
|
}
|
|
*/
|
|
}
|
|
}
|
|
|
|
}break;
|
|
default:
|
|
std::abort();
|
|
}
|
|
} break;
|
|
#ifdef EXT_V_ENABLE
|
|
case Opcode::VSET: {
|
|
auto func6 = instr.getFunc6();
|
|
if ((func3 == 0x7) || (func3 == 0x2 && func6 == 16) || (func3 == 0x1 && func6 == 16)) {
|
|
rd_write = true;
|
|
}
|
|
executeVector(instr, wid, rsdata, rddata);
|
|
} break;
|
|
#endif
|
|
default:
|
|
std::abort();
|
|
}
|
|
|
|
if (rd_write) {
|
|
trace->wb = true;
|
|
auto type = instr.getRDType();
|
|
switch (type) {
|
|
case RegType::Integer:
|
|
if (rdest) {
|
|
DPH(2, "Dest Reg: " << type << rdest << "={");
|
|
for (uint32_t t = 0; t < num_threads; ++t) {
|
|
if (t) DPN(2, ", ");
|
|
if (!warp.tmask.test(t)) {
|
|
DPN(2, "-");
|
|
continue;
|
|
}
|
|
warp.ireg_file.at(t)[rdest] = rddata[t].i;
|
|
DPN(2, "0x" << std::hex << rddata[t].i << std::dec);
|
|
}
|
|
DPN(2, "}" << std::endl);
|
|
trace->dst_reg = {type, rdest};
|
|
assert(rdest != 0);
|
|
} else {
|
|
// disable writes to x0
|
|
trace->wb = false;
|
|
}
|
|
break;
|
|
case RegType::Float:
|
|
DPH(2, "Dest Reg: " << type << rdest << "={");
|
|
for (uint32_t t = 0; t < num_threads; ++t) {
|
|
if (t) DPN(2, ", ");
|
|
if (!warp.tmask.test(t)) {
|
|
DPN(2, "-");
|
|
continue;
|
|
}
|
|
warp.freg_file.at(t)[rdest] = rddata[t].u64;
|
|
DPN(2, "0x" << std::hex << rddata[t].f << std::dec);
|
|
}
|
|
DPN(2, "}" << std::endl);
|
|
trace->dst_reg = {type, rdest};
|
|
break;
|
|
default:
|
|
std::cout << "Unrecognized register write back type: " << type << std::endl;
|
|
std::abort();
|
|
break;
|
|
}
|
|
}
|
|
|
|
warp.PC += 4;
|
|
|
|
if (warp.PC != next_pc) {
|
|
DP(3, "*** Next PC=0x" << std::hex << next_pc << std::dec);
|
|
warp.PC = next_pc;
|
|
}
|
|
|
|
if (warp.tmask != next_tmask) {
|
|
DP(3, "*** New Tmask=" << ThreadMaskOS(next_tmask, num_threads));
|
|
warp.tmask = next_tmask;
|
|
if (!next_tmask.any()) {
|
|
active_warps_.reset(wid);
|
|
}
|
|
}
|
|
} |