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Remove debug function.

This commit is contained in:
colin.liang 2023-01-17 20:59:02 +08:00
parent dfc2c47327
commit 780c18e008
2 changed files with 27 additions and 242 deletions
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209
picorv32.v
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@ -24,13 +24,6 @@
`timescale 1 ns / 1 ps
// `default_nettype none
// `define DEBUG
`ifdef DEBUG
`define debug(debug_command) debug_command
`else
`define debug(debug_command)
`endif
`define assert(assert_expr) empty_statement
@ -71,11 +64,7 @@ module picorv32 #(
input pcpi_wait,
input pcpi_ready,
// IF DEBUG
output reg fetch_next,
output reg [31:0] dbg_insn_opcode,
output reg [31:0] dbg_insn_addr,
output reg [63:0] dbg_ascii_instr
output reg [7:0] cpu_state
);
localparam integer regfile_size = 32;
@ -248,7 +237,6 @@ module picorv32 #(
reg decoder_trigger;
reg decoder_trigger_q;
reg decoder_pseudo_trigger;
reg decoder_pseudo_trigger_q;
reg is_lui_auipc_jal;
reg is_lb_lh_lw_lbu_lhu;
@ -275,142 +263,7 @@ module picorv32 #(
wire is_rdcycle_rdcycleh_rdinstr_rdinstrh;
assign is_rdcycle_rdcycleh_rdinstr_rdinstrh = |{instr_rdcycle, instr_rdcycleh, instr_rdinstr, instr_rdinstrh};
reg [63:0] new_ascii_instr;
reg [31:0] dbg_insn_imm;
reg [4:0] dbg_insn_rs1;
reg [4:0] dbg_insn_rs2;
reg [4:0] dbg_insn_rd;
reg [31:0] dbg_rs1val;
reg [31:0] dbg_rs2val;
reg dbg_rs1val_valid;
reg dbg_rs2val_valid;
reg [127:0] dbg_ascii_state;
always @* begin
new_ascii_instr = "";
if (instr_lui) new_ascii_instr = "lui";
if (instr_auipc) new_ascii_instr = "auipc";
if (instr_jal) new_ascii_instr = "jal";
if (instr_jalr) new_ascii_instr = "jalr";
if (instr_beq) new_ascii_instr = "beq";
if (instr_bne) new_ascii_instr = "bne";
if (instr_blt) new_ascii_instr = "blt";
if (instr_bge) new_ascii_instr = "bge";
if (instr_bltu) new_ascii_instr = "bltu";
if (instr_bgeu) new_ascii_instr = "bgeu";
if (instr_lb) new_ascii_instr = "lb";
if (instr_lh) new_ascii_instr = "lh";
if (instr_lw) new_ascii_instr = "lw";
if (instr_lbu) new_ascii_instr = "lbu";
if (instr_lhu) new_ascii_instr = "lhu";
if (instr_sb) new_ascii_instr = "sb";
if (instr_sh) new_ascii_instr = "sh";
if (instr_sw) new_ascii_instr = "sw";
if (instr_addi) new_ascii_instr = "addi";
if (instr_slti) new_ascii_instr = "slti";
if (instr_sltiu) new_ascii_instr = "sltiu";
if (instr_xori) new_ascii_instr = "xori";
if (instr_ori) new_ascii_instr = "ori";
if (instr_andi) new_ascii_instr = "andi";
if (instr_slli) new_ascii_instr = "slli";
if (instr_srli) new_ascii_instr = "srli";
if (instr_srai) new_ascii_instr = "srai";
if (instr_add) new_ascii_instr = "add";
if (instr_sub) new_ascii_instr = "sub";
if (instr_sll) new_ascii_instr = "sll";
if (instr_slt) new_ascii_instr = "slt";
if (instr_sltu) new_ascii_instr = "sltu";
if (instr_xor) new_ascii_instr = "xor";
if (instr_srl) new_ascii_instr = "srl";
if (instr_sra) new_ascii_instr = "sra";
if (instr_or) new_ascii_instr = "or";
if (instr_and) new_ascii_instr = "and";
if (instr_rdcycle) new_ascii_instr = "rdcycle";
if (instr_rdcycleh) new_ascii_instr = "rdcycleh";
if (instr_rdinstr) new_ascii_instr = "rdinstr";
if (instr_rdinstrh) new_ascii_instr = "rdinstrh";
end
reg [63:0] q_ascii_instr;
reg [31:0] q_insn_imm;
reg [31:0] q_insn_opcode;
reg [4:0] q_insn_rs1;
reg [4:0] q_insn_rs2;
reg [4:0] q_insn_rd;
wire launch_next_insn;
reg dbg_valid_insn;
reg [63:0] cached_ascii_instr;
reg [31:0] cached_insn_imm;
reg [31:0] cached_insn_opcode;
reg [4:0] cached_insn_rs1;
reg [4:0] cached_insn_rs2;
reg [4:0] cached_insn_rd;
always @(posedge clk) begin
q_ascii_instr <= dbg_ascii_instr;
q_insn_imm <= dbg_insn_imm;
q_insn_opcode <= dbg_insn_opcode;
q_insn_rs1 <= dbg_insn_rs1;
q_insn_rs2 <= dbg_insn_rs2;
q_insn_rd <= dbg_insn_rd;
fetch_next <= launch_next_insn;
if (!resetn || trap) dbg_valid_insn <= 0;
else if (launch_next_insn) dbg_valid_insn <= 1;
if (decoder_trigger_q) begin
cached_ascii_instr <= new_ascii_instr;
cached_insn_imm <= decoded_imm;
if (&mem_rdata_q[1:0]) cached_insn_opcode <= mem_rdata_q;
else cached_insn_opcode <= {16'b0, mem_rdata_q[15:0]};
cached_insn_rs1 <= decoded_rs1;
cached_insn_rs2 <= decoded_rs2;
cached_insn_rd <= decoded_rd;
end
if (launch_next_insn) begin
dbg_insn_addr <= next_pc;
end
end
always @* begin
dbg_ascii_instr = q_ascii_instr;
dbg_insn_imm = q_insn_imm;
dbg_insn_opcode = q_insn_opcode;
dbg_insn_rs1 = q_insn_rs1;
dbg_insn_rs2 = q_insn_rs2;
dbg_insn_rd = q_insn_rd;
if (fetch_next) begin
if (decoder_pseudo_trigger_q) begin
dbg_ascii_instr = cached_ascii_instr;
dbg_insn_imm = cached_insn_imm;
dbg_insn_opcode = cached_insn_opcode;
dbg_insn_rs1 = cached_insn_rs1;
dbg_insn_rs2 = cached_insn_rs2;
dbg_insn_rd = cached_insn_rd;
end else begin
dbg_ascii_instr = new_ascii_instr;
if (&mem_rdata_q[1:0]) dbg_insn_opcode = mem_rdata_q;
else dbg_insn_opcode = {16'b0, mem_rdata_q[15:0]};
dbg_insn_imm = decoded_imm;
dbg_insn_rs1 = decoded_rs1;
dbg_insn_rs2 = decoded_rs2;
dbg_insn_rd = decoded_rd;
end
end
end
always @(posedge clk) begin
is_lui_auipc_jal <= |{instr_lui, instr_auipc, instr_jal};
@ -574,19 +427,6 @@ module picorv32 #(
localparam cpu_state_stmem = 8'b00000010;
localparam cpu_state_ldmem = 8'b00000001;
reg [7:0] cpu_state;
always @* begin
dbg_ascii_state = "";
if (cpu_state == cpu_state_trap) dbg_ascii_state = "trap";
if (cpu_state == cpu_state_fetch) dbg_ascii_state = "fetch";
if (cpu_state == cpu_state_ld_rs1) dbg_ascii_state = "ld_rs1";
if (cpu_state == cpu_state_ld_rs2) dbg_ascii_state = "ld_rs2";
if (cpu_state == cpu_state_exec) dbg_ascii_state = "exec";
if (cpu_state == cpu_state_shift) dbg_ascii_state = "shift";
if (cpu_state == cpu_state_stmem) dbg_ascii_state = "stmem";
if (cpu_state == cpu_state_ldmem) dbg_ascii_state = "ldmem";
end
reg set_mem_do_rinst;
reg set_mem_do_rdata;
@ -704,13 +544,6 @@ module picorv32 #(
alu_out_q <= alu_out;
if (launch_next_insn) begin
dbg_rs1val <= 'bx;
dbg_rs2val <= 'bx;
dbg_rs1val_valid <= 0;
dbg_rs2val_valid <= 0;
end
if (resetn && pcpi_valid && !pcpi_int_wait) begin
if (pcpi_timeout_counter) pcpi_timeout_counter <= pcpi_timeout_counter - 1;
end else pcpi_timeout_counter <= ~0;
@ -720,7 +553,6 @@ module picorv32 #(
decoder_trigger <= mem_do_r_inst && mem_done;
decoder_trigger_q <= decoder_trigger;
decoder_pseudo_trigger <= 0;
decoder_pseudo_trigger_q <= decoder_pseudo_trigger;
if (!resetn) begin
reg_pc <= PROGADDR_RESET;
@ -745,23 +577,16 @@ module picorv32 #(
cpu_state_trap: begin
trap <= 1;
end
cpu_state_fetch: begin
mem_do_r_inst <= !decoder_trigger;
mem_wordsize <= 0;
current_pc = reg_next_pc;
(* parallel_case *)
case (1'b1)
latched_branch: begin
current_pc = latched_store ? (latched_stalu ? alu_out_q : reg_out) & ~1 : reg_next_pc;
`debug($display(
"ST_RD: %2d 0x%08x, BRANCH 0x%08x", latched_rd, reg_pc + 4, current_pc);)
end
latched_store && !latched_branch: begin
`debug($display("ST_RD: %2d 0x%08x", latched_rd, latched_stalu ? alu_out_q : reg_out
);)
end
endcase
@ -777,7 +602,6 @@ module picorv32 #(
latched_rd <= decoded_rd;
if (decoder_trigger) begin
`debug($display("-- %-0t", $time);)
reg_next_pc <= current_pc + 4;
count_instr <= count_instr + 1;
if (instr_jal) begin
@ -799,16 +623,10 @@ module picorv32 #(
(* parallel_case *)
case (1'b1)
instr_trap: begin
`debug($display("LD_RS1: %2d 0x%08x", decoded_rs1, cpuregs_rs1);)
reg_op1 <= cpuregs_rs1;
dbg_rs1val <= cpuregs_rs1;
dbg_rs1val_valid <= 1;
pcpi_valid <= 1;
`debug($display("LD_RS2: %2d 0x%08x", decoded_rs2, cpuregs_rs2);)
reg_sh <= cpuregs_rs2;
reg_op2 <= cpuregs_rs2;
dbg_rs2val <= cpuregs_rs2;
dbg_rs2val_valid <= 1;
if (pcpi_int_ready) begin
mem_do_r_inst <= 1;
pcpi_valid <= 0;
@ -817,7 +635,6 @@ module picorv32 #(
cpu_state <= cpu_state_fetch;
end else if (pcpi_timeout || instr_ecall_ebreak) begin
pcpi_valid <= 0;
`debug($display("EBREAK OR UNSUPPORTED INSN AT 0x%08x", reg_pc);)
cpu_state <= cpu_state_trap;
end
end
@ -839,40 +656,25 @@ module picorv32 #(
cpu_state <= cpu_state_exec;
end
is_lb_lh_lw_lbu_lhu && !instr_trap: begin
`debug($display("LD_RS1: %2d 0x%08x", decoded_rs1, cpuregs_rs1);)
reg_op1 <= cpuregs_rs1;
dbg_rs1val <= cpuregs_rs1;
dbg_rs1val_valid <= 1;
cpu_state <= cpu_state_ldmem;
mem_do_r_inst <= 1;
end
is_slli_srli_srai: begin
`debug($display("LD_RS1: %2d 0x%08x", decoded_rs1, cpuregs_rs1);)
reg_op1 <= cpuregs_rs1;
dbg_rs1val <= cpuregs_rs1;
dbg_rs1val_valid <= 1;
reg_sh <= decoded_rs2;
cpu_state <= cpu_state_shift;
end
is_jalr_addi_slti_sltiu_xori_ori_andi: begin
`debug($display("LD_RS1: %2d 0x%08x", decoded_rs1, cpuregs_rs1);)
reg_op1 <= cpuregs_rs1;
dbg_rs1val <= cpuregs_rs1;
dbg_rs1val_valid <= 1;
reg_op2 <= decoded_imm;
mem_do_r_inst <= mem_do_prefetch;
cpu_state <= cpu_state_exec;
end
default: begin
`debug($display("LD_RS1: %2d 0x%08x", decoded_rs1, cpuregs_rs1);)
reg_op1 <= cpuregs_rs1;
dbg_rs1val <= cpuregs_rs1;
dbg_rs1val_valid <= 1;
`debug($display("LD_RS2: %2d 0x%08x", decoded_rs2, cpuregs_rs2);)
reg_sh <= cpuregs_rs2;
reg_op2 <= cpuregs_rs2;
dbg_rs2val <= cpuregs_rs2;
dbg_rs2val_valid <= 1;
(* parallel_case *)
case (1'b1)
is_sb_sh_sw: begin
@ -892,12 +694,8 @@ module picorv32 #(
end
cpu_state_ld_rs2: begin
`debug($display("LD_RS2: %2d 0x%08x", decoded_rs2, cpuregs_rs2);)
reg_sh <= cpuregs_rs2;
reg_op2 <= cpuregs_rs2;
dbg_rs2val <= cpuregs_rs2;
dbg_rs2val_valid <= 1;
(* parallel_case *)
case (1'b1)
instr_trap: begin
@ -910,7 +708,6 @@ module picorv32 #(
cpu_state <= cpu_state_fetch;
end else if (pcpi_timeout || instr_ecall_ebreak) begin
pcpi_valid <= 0;
`debug($display("EBREAK OR UNSUPPORTED INSN AT 0x%08x", reg_pc);)
cpu_state <= cpu_state_trap;
end
end
@ -946,6 +743,7 @@ module picorv32 #(
cpu_state <= cpu_state_fetch;
end
end
cpu_state_shift: begin
latched_store <= 1;
if (reg_sh == 0) begin
@ -1024,16 +822,13 @@ module picorv32 #(
if (resetn && (mem_do_rdata || mem_do_wdata)) begin
if (mem_wordsize == 0 && reg_op1[1:0] != 0) begin
`debug($display("MISALIGNED WORD: 0x%08x", reg_op1);)
cpu_state <= cpu_state_trap;
end
if (mem_wordsize == 1 && reg_op1[0] != 0) begin
`debug($display("MISALIGNED HALFWORD: 0x%08x", reg_op1);)
cpu_state <= cpu_state_trap;
end
end
if (resetn && mem_do_r_inst && (|reg_pc[1:0])) begin
`debug($display("MISALIGNED INSTRUCTION: 0x%08x", reg_pc);)
cpu_state <= cpu_state_trap;
end

52
testbench_wb.v
View File

@ -73,12 +73,6 @@ module picorv32_wb #(
wire [31:0] mem_la_wdata;
wire [ 3:0] mem_la_wstrb;
// IF DEBUG
wire fetch_next;
wire [31:0] dbg_insn_opcode;
wire [31:0] dbg_insn_addr;
wire [63:0] dbg_ascii_instr;
wire resetn;
initial exit = 0;
@ -102,12 +96,8 @@ module picorv32_wb #(
.mem_la_write(mem_la_write),
.mem_la_addr (mem_la_addr),
.mem_la_wdata(mem_la_wdata),
.mem_la_wstrb(mem_la_wstrb),
.mem_la_wstrb(mem_la_wstrb)
.fetch_next(fetch_next),
.dbg_insn_opcode(dbg_insn_opcode),
.dbg_insn_addr(dbg_insn_addr),
.dbg_ascii_instr(dbg_ascii_instr)
);
@ -144,25 +134,25 @@ module picorv32_wb #(
end
end
always @(posedge clk) begin
if (fetch_next) begin
if (&dbg_insn_opcode[1:0])
$fwrite(
fif,
"DECODE: 0x%08x 0x%08x %-0s\n",
dbg_insn_addr,
dbg_insn_opcode,
dbg_ascii_instr ? dbg_ascii_instr : "UNKNOWN"
);
else
$fwrite(
fif,
"DECODE: 0x%08x 0x%04x %-0s\n",
dbg_insn_addr,
dbg_insn_opcode[15:0],
dbg_ascii_instr ? dbg_ascii_instr : "UNKNOWN"
);
end
end
// always @(posedge clk) begin
// if (fetch_next) begin
// if (&dbg_insn_opcode[1:0])
// $fwrite(
// fif,
// "DECODE: 0x%08x 0x%08x %-0s\n",
// dbg_insn_addr,
// dbg_insn_opcode,
// dbg_ascii_instr ? dbg_ascii_instr : "UNKNOWN"
// );
// else
// $fwrite(
// fif,
// "DECODE: 0x%08x 0x%04x %-0s\n",
// dbg_insn_addr,
// dbg_insn_opcode[15:0],
// dbg_ascii_instr ? dbg_ascii_instr : "UNKNOWN"
// );
// end
// end
endmodule