zcy
/
tinyriscv
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
tinyriscv/rtl/core/tracer.sv

614 lines
26 KiB
Systemverilog
Raw Normal View History

temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
/*
Copyright 2021 Blue Liang, liangkangnan@163.com
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
http://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.
*/
module tracer(
input logic clk,
input logic rst_n,
input logic[31:0] inst_i,
input logic[31:0] pc_i,
input logic inst_valid_i
);
typedef enum logic [6:0] {
OPCODE_LOAD = 7'h03,
OPCODE_MISC_MEM = 7'h0f,
OPCODE_OP_IMM = 7'h13,
OPCODE_AUIPC = 7'h17,
OPCODE_STORE = 7'h23,
OPCODE_OP = 7'h33,
OPCODE_LUI = 7'h37,
OPCODE_BRANCH = 7'h63,
OPCODE_JALR = 7'h67,
OPCODE_JAL = 7'h6f,
OPCODE_SYSTEM = 7'h73
} opcode_e;
// instruction masks (for tracer)
parameter logic [31:0] INSN_LUI = { 25'h?, {OPCODE_LUI } };
parameter logic [31:0] INSN_AUIPC = { 25'h?, {OPCODE_AUIPC} };
parameter logic [31:0] INSN_JAL = { 25'h?, {OPCODE_JAL } };
parameter logic [31:0] INSN_JALR = { 17'h?, 3'b000, 5'h?, {OPCODE_JALR } };
// BRANCH
parameter logic [31:0] INSN_BEQ = { 17'h?, 3'b000, 5'h?, {OPCODE_BRANCH} };
parameter logic [31:0] INSN_BNE = { 17'h?, 3'b001, 5'h?, {OPCODE_BRANCH} };
parameter logic [31:0] INSN_BLT = { 17'h?, 3'b100, 5'h?, {OPCODE_BRANCH} };
parameter logic [31:0] INSN_BGE = { 17'h?, 3'b101, 5'h?, {OPCODE_BRANCH} };
parameter logic [31:0] INSN_BLTU = { 17'h?, 3'b110, 5'h?, {OPCODE_BRANCH} };
parameter logic [31:0] INSN_BGEU = { 17'h?, 3'b111, 5'h?, {OPCODE_BRANCH} };
// OPIMM
parameter logic [31:0] INSN_ADDI = { 17'h?, 3'b000, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SLTI = { 17'h?, 3'b010, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SLTIU = { 17'h?, 3'b011, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_XORI = { 17'h?, 3'b100, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_ORI = { 17'h?, 3'b110, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_ANDI = { 17'h?, 3'b111, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SLLI = { 7'b0000000, 10'h?, 3'b001, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SRLI = { 7'b0000000, 10'h?, 3'b101, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SRAI = { 7'b0100000, 10'h?, 3'b101, 5'h?, {OPCODE_OP_IMM} };
// OP
parameter logic [31:0] INSN_ADD = { 7'b0000000, 10'h?, 3'b000, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SUB = { 7'b0100000, 10'h?, 3'b000, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SLL = { 7'b0000000, 10'h?, 3'b001, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SLT = { 7'b0000000, 10'h?, 3'b010, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SLTU = { 7'b0000000, 10'h?, 3'b011, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_XOR = { 7'b0000000, 10'h?, 3'b100, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SRL = { 7'b0000000, 10'h?, 3'b101, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SRA = { 7'b0100000, 10'h?, 3'b101, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_OR = { 7'b0000000, 10'h?, 3'b110, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_AND = { 7'b0000000, 10'h?, 3'b111, 5'h?, {OPCODE_OP} };
// SYSTEM
parameter logic [31:0] INSN_CSRRW = { 17'h?, 3'b001, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_CSRRS = { 17'h?, 3'b010, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_CSRRC = { 17'h?, 3'b011, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_CSRRWI = { 17'h?, 3'b101, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_CSRRSI = { 17'h?, 3'b110, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_CSRRCI = { 17'h?, 3'b111, 5'h?, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_ECALL = { 12'b000000000000, 13'b0, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_EBREAK = { 12'b000000000001, 13'b0, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_MRET = { 12'b001100000010, 13'b0, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_DRET = { 12'b011110110010, 13'b0, {OPCODE_SYSTEM} };
parameter logic [31:0] INSN_WFI = { 12'b000100000101, 13'b0, {OPCODE_SYSTEM} };
// RV32M
parameter logic [31:0] INSN_MUL = { 7'b0000001, 10'h?, 3'b000, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_MULH = { 7'b0000001, 10'h?, 3'b001, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_MULHSU = { 7'b0000001, 10'h?, 3'b010, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_MULHU = { 7'b0000001, 10'h?, 3'b011, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_DIV = { 7'b0000001, 10'h?, 3'b100, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_DIVU = { 7'b0000001, 10'h?, 3'b101, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_REM = { 7'b0000001, 10'h?, 3'b110, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_REMU = { 7'b0000001, 10'h?, 3'b111, 5'h?, {OPCODE_OP} };
// LOAD & STORE
parameter logic [31:0] INSN_LOAD = {25'h?, {OPCODE_LOAD } };
parameter logic [31:0] INSN_STORE = {25'h?, {OPCODE_STORE} };
// MISC-MEM
parameter logic [31:0] INSN_FENCE = { 17'h?, 3'b000, 5'h?, {OPCODE_MISC_MEM} };
parameter logic [31:0] INSN_FENCEI = { 17'h0, 3'b001, 5'h0, {OPCODE_MISC_MEM} };
// Get a CSR name for a CSR address.
function automatic string get_csr_name(input logic [11:0] csr_addr);
unique case (csr_addr)
12'd0: return "ustatus";
12'd4: return "uie";
12'd5: return "utvec";
12'd64: return "uscratch";
12'd65: return "uepc";
12'd66: return "ucause";
12'd67: return "utval";
12'd68: return "uip";
12'd1: return "fflags";
12'd2: return "frm";
12'd3: return "fcsr";
12'd3072: return "cycle";
12'd3073: return "time";
12'd3074: return "instret";
12'd3075: return "hpmcounter3";
12'd3076: return "hpmcounter4";
12'd3077: return "hpmcounter5";
12'd3078: return "hpmcounter6";
12'd3079: return "hpmcounter7";
12'd3080: return "hpmcounter8";
12'd3081: return "hpmcounter9";
12'd3082: return "hpmcounter10";
12'd3083: return "hpmcounter11";
12'd3084: return "hpmcounter12";
12'd3085: return "hpmcounter13";
12'd3086: return "hpmcounter14";
12'd3087: return "hpmcounter15";
12'd3088: return "hpmcounter16";
12'd3089: return "hpmcounter17";
12'd3090: return "hpmcounter18";
12'd3091: return "hpmcounter19";
12'd3092: return "hpmcounter20";
12'd3093: return "hpmcounter21";
12'd3094: return "hpmcounter22";
12'd3095: return "hpmcounter23";
12'd3096: return "hpmcounter24";
12'd3097: return "hpmcounter25";
12'd3098: return "hpmcounter26";
12'd3099: return "hpmcounter27";
12'd3100: return "hpmcounter28";
12'd3101: return "hpmcounter29";
12'd3102: return "hpmcounter30";
12'd3103: return "hpmcounter31";
12'd3200: return "cycleh";
12'd3201: return "timeh";
12'd3202: return "instreth";
12'd3203: return "hpmcounter3h";
12'd3204: return "hpmcounter4h";
12'd3205: return "hpmcounter5h";
12'd3206: return "hpmcounter6h";
12'd3207: return "hpmcounter7h";
12'd3208: return "hpmcounter8h";
12'd3209: return "hpmcounter9h";
12'd3210: return "hpmcounter10h";
12'd3211: return "hpmcounter11h";
12'd3212: return "hpmcounter12h";
12'd3213: return "hpmcounter13h";
12'd3214: return "hpmcounter14h";
12'd3215: return "hpmcounter15h";
12'd3216: return "hpmcounter16h";
12'd3217: return "hpmcounter17h";
12'd3218: return "hpmcounter18h";
12'd3219: return "hpmcounter19h";
12'd3220: return "hpmcounter20h";
12'd3221: return "hpmcounter21h";
12'd3222: return "hpmcounter22h";
12'd3223: return "hpmcounter23h";
12'd3224: return "hpmcounter24h";
12'd3225: return "hpmcounter25h";
12'd3226: return "hpmcounter26h";
12'd3227: return "hpmcounter27h";
12'd3228: return "hpmcounter28h";
12'd3229: return "hpmcounter29h";
12'd3230: return "hpmcounter30h";
12'd3231: return "hpmcounter31h";
12'd256: return "sstatus";
12'd258: return "sedeleg";
12'd259: return "sideleg";
12'd260: return "sie";
12'd261: return "stvec";
12'd262: return "scounteren";
12'd320: return "sscratch";
12'd321: return "sepc";
12'd322: return "scause";
12'd323: return "stval";
12'd324: return "sip";
12'd384: return "satp";
12'd3857: return "mvendorid";
12'd3858: return "marchid";
12'd3859: return "mimpid";
12'd3860: return "mhartid";
12'd768: return "mstatus";
12'd769: return "misa";
12'd770: return "medeleg";
12'd771: return "mideleg";
12'd772: return "mie";
12'd773: return "mtvec";
12'd774: return "mcounteren";
12'd832: return "mscratch";
12'd833: return "mepc";
12'd834: return "mcause";
12'd835: return "mtval";
12'd836: return "mip";
12'd928: return "pmpcfg0";
12'd929: return "pmpcfg1";
12'd930: return "pmpcfg2";
12'd931: return "pmpcfg3";
12'd944: return "pmpaddr0";
12'd945: return "pmpaddr1";
12'd946: return "pmpaddr2";
12'd947: return "pmpaddr3";
12'd948: return "pmpaddr4";
12'd949: return "pmpaddr5";
12'd950: return "pmpaddr6";
12'd951: return "pmpaddr7";
12'd952: return "pmpaddr8";
12'd953: return "pmpaddr9";
12'd954: return "pmpaddr10";
12'd955: return "pmpaddr11";
12'd956: return "pmpaddr12";
12'd957: return "pmpaddr13";
12'd958: return "pmpaddr14";
12'd959: return "pmpaddr15";
12'd2816: return "mcycle";
12'd2818: return "minstret";
12'd2819: return "mhpmcounter3";
12'd2820: return "mhpmcounter4";
12'd2821: return "mhpmcounter5";
12'd2822: return "mhpmcounter6";
12'd2823: return "mhpmcounter7";
12'd2824: return "mhpmcounter8";
12'd2825: return "mhpmcounter9";
12'd2826: return "mhpmcounter10";
12'd2827: return "mhpmcounter11";
12'd2828: return "mhpmcounter12";
12'd2829: return "mhpmcounter13";
12'd2830: return "mhpmcounter14";
12'd2831: return "mhpmcounter15";
12'd2832: return "mhpmcounter16";
12'd2833: return "mhpmcounter17";
12'd2834: return "mhpmcounter18";
12'd2835: return "mhpmcounter19";
12'd2836: return "mhpmcounter20";
12'd2837: return "mhpmcounter21";
12'd2838: return "mhpmcounter22";
12'd2839: return "mhpmcounter23";
12'd2840: return "mhpmcounter24";
12'd2841: return "mhpmcounter25";
12'd2842: return "mhpmcounter26";
12'd2843: return "mhpmcounter27";
12'd2844: return "mhpmcounter28";
12'd2845: return "mhpmcounter29";
12'd2846: return "mhpmcounter30";
12'd2847: return "mhpmcounter31";
12'd2944: return "mcycleh";
12'd2946: return "minstreth";
12'd2947: return "mhpmcounter3h";
12'd2948: return "mhpmcounter4h";
12'd2949: return "mhpmcounter5h";
12'd2950: return "mhpmcounter6h";
12'd2951: return "mhpmcounter7h";
12'd2952: return "mhpmcounter8h";
12'd2953: return "mhpmcounter9h";
12'd2954: return "mhpmcounter10h";
12'd2955: return "mhpmcounter11h";
12'd2956: return "mhpmcounter12h";
12'd2957: return "mhpmcounter13h";
12'd2958: return "mhpmcounter14h";
12'd2959: return "mhpmcounter15h";
12'd2960: return "mhpmcounter16h";
12'd2961: return "mhpmcounter17h";
12'd2962: return "mhpmcounter18h";
12'd2963: return "mhpmcounter19h";
12'd2964: return "mhpmcounter20h";
12'd2965: return "mhpmcounter21h";
12'd2966: return "mhpmcounter22h";
12'd2967: return "mhpmcounter23h";
12'd2968: return "mhpmcounter24h";
12'd2969: return "mhpmcounter25h";
12'd2970: return "mhpmcounter26h";
12'd2971: return "mhpmcounter27h";
12'd2972: return "mhpmcounter28h";
12'd2973: return "mhpmcounter29h";
12'd2974: return "mhpmcounter30h";
12'd2975: return "mhpmcounter31h";
12'd803: return "mhpmevent3";
12'd804: return "mhpmevent4";
12'd805: return "mhpmevent5";
12'd806: return "mhpmevent6";
12'd807: return "mhpmevent7";
12'd808: return "mhpmevent8";
12'd809: return "mhpmevent9";
12'd810: return "mhpmevent10";
12'd811: return "mhpmevent11";
12'd812: return "mhpmevent12";
12'd813: return "mhpmevent13";
12'd814: return "mhpmevent14";
12'd815: return "mhpmevent15";
12'd816: return "mhpmevent16";
12'd817: return "mhpmevent17";
12'd818: return "mhpmevent18";
12'd819: return "mhpmevent19";
12'd820: return "mhpmevent20";
12'd821: return "mhpmevent21";
12'd822: return "mhpmevent22";
12'd823: return "mhpmevent23";
12'd824: return "mhpmevent24";
12'd825: return "mhpmevent25";
12'd826: return "mhpmevent26";
12'd827: return "mhpmevent27";
12'd828: return "mhpmevent28";
12'd829: return "mhpmevent29";
12'd830: return "mhpmevent30";
12'd831: return "mhpmevent31";
12'd1952: return "tselect";
12'd1953: return "tdata1";
12'd1954: return "tdata2";
12'd1955: return "tdata3";
12'd1968: return "dcsr";
12'd1969: return "dpc";
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-05-04 13:11:43 +00:00
12'd1970: return "dscratch0";
12'd1971: return "dscratch1";
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
12'd512: return "hstatus";
12'd514: return "hedeleg";
12'd515: return "hideleg";
12'd516: return "hie";
12'd517: return "htvec";
12'd576: return "hscratch";
12'd577: return "hepc";
12'd578: return "hcause";
12'd579: return "hbadaddr";
12'd580: return "hip";
12'd896: return "mbase";
12'd897: return "mbound";
12'd898: return "mibase";
12'd899: return "mibound";
12'd900: return "mdbase";
12'd901: return "mdbound";
12'd800: return "mcountinhibit";
default: return $sformatf("0x%x", csr_addr);
endcase
endfunction
int unsigned cycle;
string decoded_str;
int file_handle;
string file_name;
logic[4:0] rd_addr = inst_i[11:7];
logic[4:0] rs1_addr = inst_i[19:15];
logic[4:0] rs2_addr = inst_i[24:20];
function automatic void decode_u_insn(input string mnemonic);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,0x%0x", mnemonic, rd_addr, {inst_i[31:12]});
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
function automatic void decode_j_insn(input string mnemonic);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%0x", mnemonic, rd_addr,
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
{{12{inst_i[31]}}, inst_i[19:12], inst_i[20], inst_i[30:21], 1'b0});
endfunction
function automatic void decode_i_jalr_insn(input string mnemonic);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%0d(x%0d)", mnemonic, rd_addr,
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
$signed({{20 {inst_i[31]}}, inst_i[31:20]}), rs1_addr);
endfunction
function automatic void decode_b_insn(input string mnemonic);
logic [31:0] branch_target;
logic [31:0] imm;
// We cannot use rvfi_pc_wdata for conditional jumps.
imm = $signed({ {19 {inst_i[31]}}, inst_i[31], inst_i[7],
inst_i[30:25], inst_i[11:8], 1'b0 });
branch_target = pc_i + imm;
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,x%0d,%0x", mnemonic, rs1_addr, rs2_addr, branch_target);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
function automatic void decode_i_insn(input string mnemonic);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,x%0d,%0d", mnemonic, rd_addr, rs1_addr,
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
$signed({{20 {inst_i[31]}}, inst_i[31:20]}));
endfunction
function automatic void decode_i_shift_insn(input string mnemonic);
logic [4:0] shamt;
shamt = {inst_i[24:20]};
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,x%0d,0x%0x", mnemonic, rd_addr, rs1_addr, shamt);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
function automatic void decode_r_insn(input string mnemonic);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,x%0d,x%0d", mnemonic, rd_addr, rs1_addr, rs2_addr);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
function automatic void decode_csr_insn(input string mnemonic);
logic [11:0] csr;
string csr_name;
csr = inst_i[31:20];
csr_name = get_csr_name(csr);
if (!inst_i[14]) begin
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%s,x%0d", mnemonic, rd_addr, csr_name, rs1_addr);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
end else begin
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%s,%0d", mnemonic, rd_addr, csr_name, { 27'b0, inst_i[19:15]});
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
end
endfunction
function automatic void decode_mnemonic(input string mnemonic);
decoded_str = mnemonic;
endfunction
function automatic void decode_load_insn();
string mnemonic;
logic [2:0] size;
size = inst_i[14:12];
if (size == 3'b000) begin
mnemonic = "lb";
end else if (size == 3'b001) begin
mnemonic = "lh";
end else if (size == 3'b010) begin
mnemonic = "lw";
end else if (size == 3'b100) begin
mnemonic = "lbu";
end else if (size == 3'b101) begin
mnemonic = "lhu";
end else begin
decode_mnemonic("INVALID");
return;
end
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%0d(x%0d)", mnemonic, rd_addr,
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
$signed({{20 {inst_i[31]}}, inst_i[31:20]}), rs1_addr);
endfunction
function automatic void decode_store_insn();
string mnemonic;
if (inst_i[13:12] == 2'b00) begin
mnemonic = "sb";
end else if (inst_i[13:12] == 2'b01) begin
mnemonic = "sh";
end else if (inst_i[13:12] == 2'b10) begin
mnemonic = "sw";
end else begin
decode_mnemonic("INVALID");
return;
end
if (!inst_i[14]) begin
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("%s x%0d,%0d(x%0d)", mnemonic, rs2_addr,
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
$signed({ {20 {inst_i[31]}}, inst_i[31:25], inst_i[11:7] }), rs1_addr);
end else begin
decode_mnemonic("INVALID");
end
endfunction
function automatic string get_fence_description(logic [3:0] bits);
string desc = "";
if (bits[3]) begin
desc = {desc, "i"};
end
if (bits[2]) begin
desc = {desc, "o"};
end
if (bits[1]) begin
desc = {desc, "r"};
end
if (bits[0]) begin
desc = {desc, "w"};
end
return desc;
endfunction
function automatic void decode_fence();
string predecessor;
string successor;
predecessor = get_fence_description(inst_i[27:24]);
successor = get_fence_description(inst_i[23:20]);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decoded_str = $sformatf("fence %s,%s", predecessor, successor);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
always_comb begin
decoded_str = "";
unique casez (inst_i)
INSN_LUI: decode_u_insn("lui");
INSN_AUIPC: decode_u_insn("auipc");
INSN_JAL: decode_j_insn("jal");
INSN_JALR: decode_i_jalr_insn("jalr");
// BRANCH
INSN_BEQ: decode_b_insn("beq");
INSN_BNE: decode_b_insn("bne");
INSN_BLT: decode_b_insn("blt");
INSN_BGE: decode_b_insn("bge");
INSN_BLTU: decode_b_insn("bltu");
INSN_BGEU: decode_b_insn("bgeu");
// OPIMM
INSN_ADDI: begin
if (inst_i == 32'h00_00_00_13) begin
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
decode_mnemonic("nop");
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
end else begin
decode_i_insn("addi");
end
end
INSN_SLTI: decode_i_insn("slti");
INSN_SLTIU: decode_i_insn("sltiu");
INSN_XORI: decode_i_insn("xori");
INSN_ORI: decode_i_insn("ori");
INSN_ANDI: decode_i_insn("andi");
INSN_SLLI: decode_i_shift_insn("slli");
INSN_SRLI: decode_i_shift_insn("srli");
INSN_SRAI: decode_i_shift_insn("srai");
// OP
INSN_ADD: decode_r_insn("add");
INSN_SUB: decode_r_insn("sub");
INSN_SLL: decode_r_insn("sll");
INSN_SLT: decode_r_insn("slt");
INSN_SLTU: decode_r_insn("sltu");
INSN_XOR: decode_r_insn("xor");
INSN_SRL: decode_r_insn("srl");
INSN_SRA: decode_r_insn("sra");
INSN_OR: decode_r_insn("or");
INSN_AND: decode_r_insn("and");
// SYSTEM (CSR manipulation)
INSN_CSRRW: decode_csr_insn("csrrw");
INSN_CSRRS: decode_csr_insn("csrrs");
INSN_CSRRC: decode_csr_insn("csrrc");
INSN_CSRRWI: decode_csr_insn("csrrwi");
INSN_CSRRSI: decode_csr_insn("csrrsi");
INSN_CSRRCI: decode_csr_insn("csrrci");
// SYSTEM (others)
INSN_ECALL: decode_mnemonic("ecall");
INSN_EBREAK: decode_mnemonic("ebreak");
INSN_MRET: decode_mnemonic("mret");
INSN_DRET: decode_mnemonic("dret");
INSN_WFI: decode_mnemonic("wfi");
// RV32M
INSN_MUL: decode_r_insn("mul");
INSN_MULH: decode_r_insn("mulh");
INSN_MULHSU: decode_r_insn("mulhsu");
INSN_MULHU: decode_r_insn("mulhu");
INSN_DIV: decode_r_insn("div");
INSN_DIVU: decode_r_insn("divu");
INSN_REM: decode_r_insn("rem");
INSN_REMU: decode_r_insn("remu");
// LOAD & STORE
INSN_LOAD: decode_load_insn();
INSN_STORE: decode_store_insn();
// MISC-MEM
INSN_FENCE: decode_fence();
INSN_FENCEI: decode_mnemonic("fence.i");
default: decode_mnemonic("INVALID");
endcase
end
initial begin
string file_name_base = "trace_core";
$sformat(file_name, "%s.log", file_name_base);
$display("Writing execution trace to %s", file_name);
file_handle = $fopen(file_name, "w");
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
$fwrite(file_handle, "\t\t\tTime\t\tCycle\tPC\t\t\tInsn\t\tDecoded instruction\n");
optimize ifu and lsu Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-09 12:22:34 +00:00
$fflush(file_handle);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
end
function automatic void printbuffer_dumpline();
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 10:00:19 +00:00
string insn_str = $sformatf("%h", inst_i);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-01 03:29:00 +00:00
$fwrite(file_handle, "%15t\t%d\t\t%h\t%s\t%s", $time, cycle, pc_i, insn_str, decoded_str);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
$fwrite(file_handle, "\n");
optimize ifu and lsu Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-04-09 12:22:34 +00:00
$fflush(file_handle);
temp commit Signed-off-by: liangkangnan <liangkangnan@163.com>
2021-03-31 07:25:22 +00:00
endfunction
// log execution
always @(posedge clk) begin
if (inst_valid_i) begin
printbuffer_dumpline();
end
end
// cycle counter
always @(posedge clk or negedge rst_n) begin
if (!rst_n) begin
cycle <= 0;
end else begin
cycle <= cycle + 1;
end
end
endmodule