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temp commit 

Signed-off-by: liangkangnan <liangkangnan@163.com>
pull/4/head
liangkangnan 2021-03-31 15:25:22 +08:00
parent 9322b595bc
commit c070f0b49d
7 changed files with 1256 additions and 610 deletions
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6
README.md
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@ -1,2 +1,6 @@
更新计划：
1.增加指令trace功能；
2.总线优化；
3.取指、访存优化；
4.jtag优化；

1
rtl.flist
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@ -19,6 +19,7 @@
../rtl/core/pipe_ctrl.sv
../rtl/core/rst_ctrl.sv
../rtl/core/tinyriscv_core.sv
../rtl/core/tracer.sv
../rtl/debug/jtag_dm.sv
../rtl/debug/jtag_driver.sv

6
rtl/core/tinyriscv_core.sv
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@ -315,4 +315,10 @@ module tinyriscv_core(
.int_assert_o(clint_int_assert_o)
);
`ifdef TRACE_ENABLED
tracer u_tracer(
);
`endif
endmodule

612
rtl/core/tracer.sv Normal file
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@ -0,0 +1,612 @@
/*
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";
12'd1970: return "dscratch";
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);
decoded_str = $sformatf("%s\tx%0d,0x%0x", mnemonic, rd_addr, {inst_i[31:12]});
endfunction
function automatic void decode_j_insn(input string mnemonic);
decoded_str = $sformatf("%s\tx%0d,%0x", mnemonic, rd_addr,
{{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);
decoded_str = $sformatf("%s\tx%0d,%0d(x%0d)", mnemonic, rd_addr,
$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;
decoded_str = $sformatf("%s\tx%0d,x%0d,%0x", mnemonic, rs1_addr, rs2_addr, branch_target);
endfunction
function automatic void decode_i_insn(input string mnemonic);
decoded_str = $sformatf("%s\tx%0d,x%0d,%0d", mnemonic, rd_addr, rs1_addr,
$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]};
decoded_str = $sformatf("%s\tx%0d,x%0d,0x%0x", mnemonic, rd_addr, rs1_addr, shamt);
endfunction
function automatic void decode_r_insn(input string mnemonic);
decoded_str = $sformatf("%s\tx%0d,x%0d,x%0d", mnemonic, rd_addr, rs1_addr, rs2_addr);
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
decoded_str = $sformatf("%s\tx%0d,%s,x%0d", mnemonic, rd_addr, csr_name, rs1_addr);
end else begin
decoded_str = $sformatf("%s\tx%0d,%s,%0d", mnemonic, rd_addr, csr_name, { 27'b0, inst_i[19:15]});
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
decoded_str = $sformatf("%s\tx%0d,%0d(x%0d)", mnemonic, rd_addr,
$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
decoded_str = $sformatf("%s\tx%0d,%0d(x%0d)", mnemonic, rs2_addr,
$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]);
decoded_str = $sformatf("fence\t%s,%s", predecessor, successor);
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
// TODO: objdump doesn't decode this as nop currently, even though it would be helpful
// Decide what to do here: diverge from objdump, or make the trace less readable to
// users.
//decode_mnemonic("nop");
decode_i_insn("addi");
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");
$fwrite(file_handle, "Time\tCycle\tPC\tInsn\tDecoded instruction\n");
end
function automatic void printbuffer_dumpline();
$fwrite(file_handle, "%15t\t%d\t%h\t%s\t%s", $time, cycle, pc_i, inst_i, decoded_str);
$fwrite(file_handle, "\n");
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

4
sim/Makefile
View File

@ -8,9 +8,7 @@ VERILATOR := verilator
VERI_FLAGS += +vcd
VERI_CFLAGS +=
VERI_VFLAGS += -DRVFI
TRACE_ENABLE := 1
VERI_VFLAGS += -DTRACE_ENABLED
RTL_FILES = ../rtl.flist

5
sim/tb_top_verilator.cpp
View File

@ -51,7 +51,6 @@ int main(int argc, char **argv, char **env)
top->trace(tfp, 99);
tfp->open("verilator_tb.vcd");
#endif
top->fetch_enable_i = 1;
top->clk_i = 0;
top->rst_ni = 0;
@ -67,8 +66,8 @@ int main(int argc, char **argv, char **env)
tfp->dump(t);
#endif
t += 5;
if (t > 1000)
break;
//if (t > 5000)
// break;
}
#ifdef VCD_TRACE
tfp->close();

40
sim/tb_top_verilator.sv
View File

@ -16,13 +16,11 @@ module tb_top_verilator #(
) (
input clk_i,
input rst_ni,
input fetch_enable_i
input rst_ni
);
wire[31:0] x26 = u_tinyriscv_soc_top.u_tinyriscv_core.u_gpr_reg.regs[26];
wire[31:0] x27 = u_tinyriscv_soc_top.u_tinyriscv_core.u_gpr_reg.regs[27];
initial begin: load_prog
automatic logic [1023:0] firmware;
@ -32,13 +30,41 @@ module tb_top_verilator #(
$display("[TESTBENCH] %t: loading firmware %0s ...",
$time, firmware);
$readmemh (firmware, u_tinyriscv_soc_top.u_rom.u_gen_ram.ram);
//$display("mem[0x80]=0x%x", u_ram.ram.mem[32]);
//$display("mem[0x84]=0x%x", u_ram.ram.mem[33]);
end else begin
$display("No firmware specified");
end
end
always @(posedge clk_i or negedge rst_ni) begin
if (!rst_ni) begin
end else begin
if (x26 == 32'b1) begin
if (x27 == 32'b1) begin
$display("~~~~~~~~~~~~~~~~~~~ TEST_PASS ~~~~~~~~~~~~~~~~~~~");
$display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
$display("~~~~~~~~~ ##### ## #### #### ~~~~~~~~~");
$display("~~~~~~~~~ # # # # # # ~~~~~~~~~");
$display("~~~~~~~~~ # # # # #### #### ~~~~~~~~~");
$display("~~~~~~~~~ ##### ###### # #~~~~~~~~~");
$display("~~~~~~~~~ # # # # # # #~~~~~~~~~");
$display("~~~~~~~~~ # # # #### #### ~~~~~~~~~");
$display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
end else begin
$display("~~~~~~~~~~~~~~~~~~~ TEST_FAIL ~~~~~~~~~~~~~~~~~~~~");
$display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
$display("~~~~~~~~~~###### ## # # ~~~~~~~~~~");
$display("~~~~~~~~~~# # # # # ~~~~~~~~~~");
$display("~~~~~~~~~~##### # # # # ~~~~~~~~~~");
$display("~~~~~~~~~~# ###### # # ~~~~~~~~~~");
$display("~~~~~~~~~~# # # # # ~~~~~~~~~~");
$display("~~~~~~~~~~# # # # ######~~~~~~~~~~");
$display("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
end
$finish;
end
end
end
tinyriscv_soc_top u_tinyriscv_soc_top(
.clk(clk_i),