reorganize example and optimize interrupt
Signed-off-by: liangkangnan <liangkangnan@163.com>pull/1/head
liangkangnan
parent
20d1055ea4
commit
0e188d4934
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@ -23,33 +23,66 @@ module clint(
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input wire clk,
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input wire rst,
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input wire we_i, // write enable
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input wire[`RegAddrBus] addr_i, // addr
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input wire[`RegBus] data_i, // write data
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input wire[`INT_BUS] int_flag_i,
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input wire[`InstBus] inst_i,
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input wire[`InstAddrBus] inst_addr_i,
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input wire[`Hold_Flag_Bus] hold_flag_i,
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input wire[`RegBus] data_i,
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output reg[`RegBus] data_o // read data
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output reg we_o,
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output reg[`MemAddrBus] waddr_o,
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output reg[`MemAddrBus] raddr_o,
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output reg[`RegBus] data_o,
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output reg[`InstAddrBus] int_addr_o,
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output reg int_assert_o
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);
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reg[`RegBus] regs[0:`RegNum - 1];
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reg in_int_context;
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reg[`InstAddrBus] int_return_addr;
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// write reg
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always @ (posedge clk) begin
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if (rst == `RstEnable) begin
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regs[0] <= `ZeroWord;
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in_int_context <= `False;
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int_return_addr <= `ZeroWord;
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int_assert_o <= `INT_DEASSERT;
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int_addr_o <= `ZeroWord;
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end else begin
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if (we_i == `WriteEnable) begin
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regs[addr_i] <= data_i;
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if (int_flag_i != `INT_NONE && in_int_context == `False) begin
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int_assert_o <= `INT_ASSERT;
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in_int_context <= `True;
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int_return_addr <= inst_addr_i;
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int_addr_o <= data_i;
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end else if (inst_i == `INST_MRET) begin
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in_int_context <= `False;
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int_assert_o <= `INT_ASSERT;
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int_addr_o <= int_return_addr;
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end else begin
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int_assert_o <= `INT_DEASSERT;
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end
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end
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end
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always @ (*) begin
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always @ (posedge clk) begin
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if (rst == `RstEnable) begin
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raddr_o <= `ZeroWord;
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end else begin
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raddr_o <= {20'h0, `CSR_MTVEC};
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end
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end
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always @ (posedge clk) begin
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if (rst == `RstEnable) begin
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we_o <= `WriteDisable;
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waddr_o <= `ZeroWord;
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data_o <= `ZeroWord;
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end else begin
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data_o <= regs[addr_i];
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we_o <= `WriteEnable;
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waddr_o <= {20'h0, `CSR_MCAUSE};
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data_o <= {24'h0, int_flag_i};
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end
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end
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@ -27,37 +27,83 @@ module csr_reg(
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input wire[`MemAddrBus] waddr_i,
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input wire[`RegBus] data_i,
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input wire clint_we_i,
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input wire[`MemAddrBus] clint_raddr_i,
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input wire[`MemAddrBus] clint_waddr_i,
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input wire[`RegBus] clint_data_i,
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output reg[`RegBus] clint_data_o,
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output reg[`RegBus] data_o
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);
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localparam CSR_CYCLE = 12'hc00;
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localparam CSR_CYCLEH = 12'hc80;
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reg[63:0] cycle;
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reg[`DoubleRegBus] cycle;
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reg[`RegBus] mtvec;
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reg[`RegBus] mcause;
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// cycle counter
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always @ (posedge clk) begin
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if (rst == `RstEnable) begin
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cycle <= 64'h0;
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cycle <= {`ZeroWord, `ZeroWord};
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end else begin
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cycle <= cycle + 1'b1;
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end
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end
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// write reg
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always @ (posedge clk) begin
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if (rst == `RstEnable) begin
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mtvec <= `ZeroWord;
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mcause <= `ZeroWord;
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end else begin
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if (we_i == `WriteEnable) begin
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case (waddr_i[11:0])
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`CSR_MTVEC: begin
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mtvec <= data_i;
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end
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`CSR_MCAUSE: begin
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mcause <= data_i;
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end
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default: begin
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end
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endcase
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end else if (clint_we_i == `WriteEnable) begin
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case (clint_waddr_i[11:0])
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`CSR_MTVEC: begin
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mtvec <= clint_data_i;
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end
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`CSR_MCAUSE: begin
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mcause <= clint_data_i;
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end
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default: begin
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end
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endcase
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end
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end
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end
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// read reg
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always @ (*) begin
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if (rst == `RstEnable) begin
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data_o <= `ZeroWord;
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end else begin
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case (raddr_i[11:0])
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CSR_CYCLE: begin
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`CSR_CYCLE: begin
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data_o <= cycle[31:0];
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end
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CSR_CYCLEH: begin
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`CSR_CYCLEH: begin
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data_o <= cycle[63:32];
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end
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`CSR_MTVEC: begin
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data_o <= mtvec;
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end
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`CSR_MCAUSE: begin
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data_o <= mcause;
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end
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default: begin
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data_o <= `ZeroWord;
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end
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@ -65,4 +111,29 @@ module csr_reg(
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end
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end
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// read reg
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always @ (*) begin
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if (rst == `RstEnable) begin
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clint_data_o <= `ZeroWord;
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end else begin
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case (clint_raddr_i[11:0])
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`CSR_CYCLE: begin
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clint_data_o <= cycle[31:0];
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end
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`CSR_CYCLEH: begin
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clint_data_o <= cycle[63:32];
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end
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`CSR_MTVEC: begin
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clint_data_o <= mtvec;
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end
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`CSR_MCAUSE: begin
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clint_data_o <= mcause;
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end
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default: begin
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clint_data_o <= `ZeroWord;
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end
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endcase
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end
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end
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endmodule
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@ -25,8 +25,6 @@ module ctrl(
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input wire hold_flag_ex_i,
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input wire hold_flag_rib_i,
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input wire jtag_halt_flag_i,
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input wire[`INT_BUS] int_flag_i,
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input wire[`InstAddrBus] int_return_addr_i,
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output reg[`Hold_Flag_Bus] hold_flag_o,
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output reg jump_flag_o,
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@ -44,15 +42,7 @@ module ctrl(
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jump_addr_o <= jump_addr_i;
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jump_flag_o <= jump_flag_i;
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hold_flag_o <= `Hold_None;
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if (int_flag_i == `INT_TIMER0) begin
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jump_addr_o <= `INT_TIMER0_ENTRY_ADDR;
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jump_flag_o <= `JumpEnable;
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hold_flag_o <= `Hold_Id;
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end else if (int_flag_i == `INT_RET) begin
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jump_addr_o <= int_return_addr_i;
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jump_flag_o <= `JumpEnable;
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hold_flag_o <= `Hold_Id;
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end else if (jump_flag_i == `JumpEnable || hold_flag_ex_i == `HoldEnable) begin
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if (jump_flag_i == `JumpEnable || hold_flag_ex_i == `HoldEnable) begin
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hold_flag_o <= `Hold_Id;
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end else if (hold_flag_rib_i == `HoldEnable) begin
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hold_flag_o <= `Hold_Pc;
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@ -132,6 +132,12 @@
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`define INST_CSRRSI 3'b110
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`define INST_CSRRCI 3'b111
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// CSR reg addr
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`define CSR_CYCLE 12'hc00
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`define CSR_CYCLEH 12'hc80
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`define CSR_MTVEC 12'h305
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`define CSR_MCAUSE 12'h342
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`define RomNum 2048 // rom depth(how many words)
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`define MemNum 2048 // memory depth(how many words)
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201
rtl/core/ex.v
201
rtl/core/ex.v
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@ -31,6 +31,8 @@ module ex(
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input wire csr_we_i,
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input wire[`MemAddrBus] csr_waddr_i,
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input wire[`RegBus] csr_rdata_i,
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input wire int_assert_i,
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input wire[`InstAddrBus] int_addr_i,
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// from mem
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input wire[`MemBus] mem_rdata_i, // mem read data
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@ -42,18 +44,12 @@ module ex(
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input wire[2:0] div_op_i,
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input wire[`RegAddrBus] div_reg_waddr_i,
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// from core
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input wire[`INT_BUS] int_flag_i,
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// from clint
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input wire[`RegBus] clint_data_i,
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// to mem
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output reg[`MemBus] mem_wdata_o, // mem write data
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output reg[`MemAddrBus] mem_raddr_o, // mem read addr
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output reg[`MemAddrBus] mem_waddr_o, // mem write addr
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output reg mem_we_o, // mem write enable
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output reg mem_req_o,
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output wire mem_we_o, // mem write enable
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output wire mem_req_o,
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// to regs
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output wire[`RegBus] reg_wdata_o, // reg write data
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@ -72,14 +68,7 @@ module ex(
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output reg[2:0] div_op_o,
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output reg[`RegAddrBus] div_reg_waddr_o,
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// to clint
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output reg clint_we_o,
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output reg[`RegAddrBus] clint_addr_o,
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output reg[`RegBus] clint_data_o,
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// to ctrl
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output reg[`InstAddrBus] int_return_addr_o,
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output reg[`INT_BUS] int_flag_o,
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output wire hold_flag_o,
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output wire jump_flag_o, // whether jump or not flag
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output wire[`InstAddrBus] jump_addr_o // jump dest addr
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@ -111,6 +100,8 @@ module ex(
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reg hold_flag;
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reg jump_flag;
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reg[`InstAddrBus] jump_addr;
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reg mem_we;
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reg mem_req;
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assign opcode = inst_i[6:0];
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assign funct3 = inst_i[14:12];
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@ -128,53 +119,21 @@ module ex(
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assign mem_waddr_index = ((reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]}) - (reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]} & 32'hfffffffc)) & 2'b11;
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assign reg_wdata_o = reg_wdata | div_wdata;
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assign reg_we_o = reg_we || div_we;
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assign reg_we_o = (int_assert_i == `INT_ASSERT)? `WriteDisable: (reg_we || div_we);
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assign reg_waddr_o = reg_waddr | div_waddr;
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assign hold_flag_o = hold_flag || div_hold_flag;
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assign jump_flag_o = jump_flag || div_jump_flag;
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assign jump_addr_o = jump_addr | div_jump_addr;
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assign mem_we_o = (int_assert_i == `INT_ASSERT)? `WriteDisable: mem_we;
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assign csr_we_o = csr_we_i;
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assign mem_req_o = (int_assert_i == `INT_ASSERT)? `RIB_NREQ: mem_req;
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assign hold_flag_o = hold_flag || div_hold_flag;
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assign jump_flag_o = jump_flag || div_jump_flag || ((int_assert_i == `INT_ASSERT)? `JumpEnable: `JumpDisable);
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assign jump_addr_o = (int_assert_i == `INT_ASSERT)? int_addr_i: (jump_addr | div_jump_addr);
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assign csr_we_o = (int_assert_i == `INT_ASSERT)? `WriteDisable: csr_we_i;
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assign csr_waddr_o = csr_waddr_i;
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// handle interrupt
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always @ (*) begin
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if (rst == `RstEnable) begin
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int_flag_o <= `INT_NONE;
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clint_we_o <= `WriteDisable;
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clint_addr_o <= `ZeroWord;
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clint_data_o <= `ZeroWord;
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int_return_addr_o <= `ZeroWord;
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end else if (int_flag_i != `INT_NONE) begin
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clint_addr_o <= `ZeroWord;
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int_return_addr_o <= `ZeroWord;
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if (clint_data_i[0] == 1'b0) begin
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int_flag_o <= int_flag_i;
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clint_we_o <= `WriteEnable;
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clint_data_o <= inst_addr_i + 4'h4 + 1'b1; // save return address and set interrupt flag
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end else begin
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int_flag_o <= `INT_NONE;
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clint_we_o <= `WriteDisable;
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clint_data_o <= `ZeroWord;
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end
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end else begin
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clint_addr_o <= `ZeroWord;
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int_return_addr_o <= `ZeroWord;
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if (inst_i == `INST_MRET) begin
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int_flag_o <= `INT_RET;
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int_return_addr_o <= {clint_data_i[31:2], 2'b00};
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clint_we_o <= `WriteEnable;
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clint_data_o <= `ZeroWord;
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end else begin
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int_flag_o <= `INT_NONE;
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clint_we_o <= `WriteDisable;
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clint_data_o <= `ZeroWord;
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end
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end
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end
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// handle mul
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always @ (*) begin
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if (rst == `RstEnable) begin
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@ -315,8 +274,8 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_req_o <= `RIB_NREQ;
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mem_we <= `WriteDisable;
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mem_req <= `RIB_NREQ;
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reg_wdata <= `ZeroWord;
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reg_we <= `WriteDisable;
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reg_waddr <= `ZeroWord;
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@ -324,7 +283,7 @@ module ex(
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end else begin
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reg_we <= reg_we_i;
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reg_waddr <= reg_waddr_i;
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mem_req_o <= `RIB_NREQ;
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mem_req <= `RIB_NREQ;
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csr_wdata_o <= `ZeroWord;
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case (opcode)
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@ -337,7 +296,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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reg_wdata <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
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end
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`INST_SLTI: begin
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@ -347,7 +306,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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if (reg1_rdata_i[31] == 1'b1 && sign_extend_tmp[31] == 1'b1) begin
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if (reg1_rdata_i < sign_extend_tmp) begin
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reg_wdata <= 32'h00000001;
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@ -373,7 +332,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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if (reg1_rdata_i[31] == 1'b1 && sign_extend_tmp[31] == 1'b1) begin
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if (reg1_rdata_i < sign_extend_tmp) begin
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reg_wdata <= 32'h00000001;
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@ -399,7 +358,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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reg_wdata <= reg1_rdata_i ^ {{20{inst_i[31]}}, inst_i[31:20]};
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end
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`INST_ORI: begin
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@ -409,7 +368,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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reg_wdata <= reg1_rdata_i | {{20{inst_i[31]}}, inst_i[31:20]};
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end
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`INST_ANDI: begin
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@ -419,7 +378,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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reg_wdata <= reg1_rdata_i & {{20{inst_i[31]}}, inst_i[31:20]};
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end
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`INST_SLLI: begin
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@ -429,7 +388,7 @@ module ex(
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mem_wdata_o <= `ZeroWord;
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mem_raddr_o <= `ZeroWord;
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mem_waddr_o <= `ZeroWord;
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mem_we_o <= `WriteDisable;
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mem_we <= `WriteDisable;
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reg_wdata <= reg1_rdata_i << shift_bits;
|
||||
end
|
||||
`INST_SRI: begin
|
||||
|
|
@ -439,7 +398,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (inst_i[30] == 1'b1) begin
|
||||
reg_wdata <= ({32{reg1_rdata_i[31]}} << (6'd32 - {1'b0, shift_bits})) | (reg1_rdata_i >> shift_bits);
|
||||
end else begin
|
||||
|
|
@ -453,7 +412,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -468,7 +427,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (inst_i[30] == 1'b0) begin
|
||||
reg_wdata <= reg1_rdata_i + reg2_rdata_i;
|
||||
end else begin
|
||||
|
|
@ -482,7 +441,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= reg1_rdata_i << reg2_rdata_i[4:0];
|
||||
end
|
||||
`INST_SLT: begin
|
||||
|
|
@ -492,7 +451,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (reg1_rdata_i[31] == 1'b1 && reg2_rdata_i[31] == 1'b1) begin
|
||||
if (reg1_rdata_i < reg2_rdata_i) begin
|
||||
reg_wdata <= 32'h00000001;
|
||||
|
|
@ -518,7 +477,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (reg1_rdata_i[31] == 1'b1 && reg2_rdata_i[31] == 1'b1) begin
|
||||
if (reg1_rdata_i < reg2_rdata_i) begin
|
||||
reg_wdata <= 32'h00000001;
|
||||
|
|
@ -544,7 +503,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= reg1_rdata_i ^ reg2_rdata_i;
|
||||
end
|
||||
`INST_SR: begin
|
||||
|
|
@ -554,7 +513,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (inst_i[30] == 1'b1) begin
|
||||
reg_wdata <= ({32{reg1_rdata_i[31]}} << (6'd32 - {1'b0, reg2_rdata_i[4:0]})) | (reg1_rdata_i >> reg2_rdata_i[4:0]);
|
||||
end else begin
|
||||
|
|
@ -568,7 +527,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= reg1_rdata_i | reg2_rdata_i;
|
||||
end
|
||||
`INST_AND: begin
|
||||
|
|
@ -578,7 +537,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= reg1_rdata_i & reg2_rdata_i;
|
||||
end
|
||||
default: begin
|
||||
|
|
@ -588,7 +547,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -601,7 +560,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= mul_temp[31:0];
|
||||
end
|
||||
`INST_MULHU: begin
|
||||
|
|
@ -611,7 +570,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= mul_temp[63:32];
|
||||
end
|
||||
`INST_MULH: begin
|
||||
|
|
@ -621,7 +580,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if ((reg1_rdata_i[31] == 1'b0) && (reg2_rdata_i[31] == 1'b0)) begin
|
||||
reg_wdata <= mul_temp[63:32];
|
||||
end else if ((reg1_rdata_i[31] == 1'b1) && (reg2_rdata_i[31] == 1'b1)) begin
|
||||
|
|
@ -639,7 +598,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
if (reg1_rdata_i[31] == 1'b1) begin
|
||||
reg_wdata <= mul_temp_invert[63:32];
|
||||
end else begin
|
||||
|
|
@ -653,7 +612,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
`INST_DIVU: begin
|
||||
|
|
@ -663,7 +622,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
`INST_REM: begin
|
||||
|
|
@ -673,7 +632,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
`INST_REMU: begin
|
||||
|
|
@ -683,7 +642,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end*/
|
||||
default: begin
|
||||
|
|
@ -693,7 +652,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -704,7 +663,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
end
|
||||
|
|
@ -716,8 +675,8 @@ module ex(
|
|||
jump_addr <= `ZeroWord;
|
||||
mem_wdata_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
//mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteDisable;
|
||||
//mem_req <= `RIB_REQ;
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
|
||||
if (mem_raddr_index == 2'b0) begin
|
||||
reg_wdata <= {{24{mem_rdata_i[7]}}, mem_rdata_i[7:0]};
|
||||
|
|
@ -735,8 +694,8 @@ module ex(
|
|||
jump_addr <= `ZeroWord;
|
||||
mem_wdata_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
//mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteDisable;
|
||||
//mem_req <= `RIB_REQ;
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
|
||||
if (mem_raddr_index == 2'b0) begin
|
||||
reg_wdata <= {{16{mem_rdata_i[15]}}, mem_rdata_i[15:0]};
|
||||
|
|
@ -750,8 +709,8 @@ module ex(
|
|||
jump_addr <= `ZeroWord;
|
||||
mem_wdata_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
//mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteDisable;
|
||||
//mem_req <= `RIB_REQ;
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
|
||||
reg_wdata <= mem_rdata_i;
|
||||
end
|
||||
|
|
@ -761,8 +720,8 @@ module ex(
|
|||
jump_addr <= `ZeroWord;
|
||||
mem_wdata_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
//mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteDisable;
|
||||
//mem_req <= `RIB_REQ;
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
|
||||
if (mem_raddr_index == 2'b0) begin
|
||||
reg_wdata <= {24'h0, mem_rdata_i[7:0]};
|
||||
|
|
@ -780,8 +739,8 @@ module ex(
|
|||
jump_addr <= `ZeroWord;
|
||||
mem_wdata_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
//mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteDisable;
|
||||
//mem_req <= `RIB_REQ;
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]};
|
||||
if (mem_raddr_index == 2'b0) begin
|
||||
reg_wdata <= {16'h0, mem_rdata_i[15:0]};
|
||||
|
|
@ -796,7 +755,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -808,8 +767,8 @@ module ex(
|
|||
hold_flag <= `HoldDisable;
|
||||
jump_addr <= `ZeroWord;
|
||||
reg_wdata <= `ZeroWord;
|
||||
mem_we_o <= `WriteEnable;
|
||||
mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteEnable;
|
||||
mem_req <= `RIB_REQ;
|
||||
mem_waddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
if (mem_waddr_index == 2'b00) begin
|
||||
|
|
@ -827,8 +786,8 @@ module ex(
|
|||
hold_flag <= `HoldDisable;
|
||||
jump_addr <= `ZeroWord;
|
||||
reg_wdata <= `ZeroWord;
|
||||
mem_we_o <= `WriteEnable;
|
||||
mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteEnable;
|
||||
mem_req <= `RIB_REQ;
|
||||
mem_waddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
if (mem_waddr_index == 2'b00) begin
|
||||
|
|
@ -842,8 +801,8 @@ module ex(
|
|||
hold_flag <= `HoldDisable;
|
||||
jump_addr <= `ZeroWord;
|
||||
reg_wdata <= `ZeroWord;
|
||||
mem_we_o <= `WriteEnable;
|
||||
mem_req_o <= `RIB_REQ;
|
||||
mem_we <= `WriteEnable;
|
||||
mem_req <= `RIB_REQ;
|
||||
mem_waddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
mem_raddr_o <= reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:25], inst_i[11:7]};
|
||||
mem_wdata_o <= reg2_rdata_i;
|
||||
|
|
@ -855,7 +814,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -867,7 +826,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i == reg2_rdata_i) begin
|
||||
jump_flag <= `JumpEnable;
|
||||
|
|
@ -882,7 +841,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i != reg2_rdata_i) begin
|
||||
jump_flag <= `JumpEnable;
|
||||
|
|
@ -897,7 +856,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i[31] == 1'b1 && reg2_rdata_i[31] == 1'b0) begin
|
||||
jump_flag <= `JumpEnable;
|
||||
|
|
@ -928,7 +887,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i[31] == 1'b0 && reg2_rdata_i[31] == 1'b1) begin
|
||||
jump_flag <= `JumpEnable;
|
||||
|
|
@ -959,7 +918,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i[31] == 1'b1 && reg2_rdata_i[31] == 1'b0) begin
|
||||
jump_flag <= `JumpDisable;
|
||||
|
|
@ -990,7 +949,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
if (reg1_rdata_i[31] == 1'b0 && reg2_rdata_i[31] == 1'b1) begin
|
||||
jump_flag <= `JumpDisable;
|
||||
|
|
@ -1023,7 +982,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -1033,7 +992,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
jump_flag <= `JumpEnable;
|
||||
jump_addr <= inst_addr_i + {{12{inst_i[31]}}, inst_i[19:12], inst_i[20], inst_i[30:21], 1'b0};
|
||||
reg_wdata <= inst_addr_i + 4'h4;
|
||||
|
|
@ -1043,7 +1002,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
jump_flag <= `JumpEnable;
|
||||
jump_addr <= (reg1_rdata_i + {{20{inst_i[31]}}, inst_i[31:20]}) & (32'hfffffffe);
|
||||
reg_wdata <= inst_addr_i + 4'h4;
|
||||
|
|
@ -1053,7 +1012,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
jump_addr <= `ZeroWord;
|
||||
jump_flag <= `JumpDisable;
|
||||
reg_wdata <= {inst_i[31:12], 12'b0};
|
||||
|
|
@ -1063,7 +1022,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
jump_addr <= `ZeroWord;
|
||||
jump_flag <= `JumpDisable;
|
||||
reg_wdata <= {inst_i[31:12], 12'b0} + inst_addr_i;
|
||||
|
|
@ -1075,7 +1034,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
`INST_FENCE: begin
|
||||
|
|
@ -1083,7 +1042,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
jump_flag <= `JumpEnable;
|
||||
jump_addr <= inst_addr_i + 4'h4;
|
||||
|
|
@ -1095,7 +1054,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
case (funct3)
|
||||
`INST_CSRRW: begin
|
||||
csr_wdata_o <= reg1_rdata_i;
|
||||
|
|
@ -1128,7 +1087,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
@ -1140,7 +1099,7 @@ module ex(
|
|||
mem_wdata_o <= `ZeroWord;
|
||||
mem_raddr_o <= `ZeroWord;
|
||||
mem_waddr_o <= `ZeroWord;
|
||||
mem_we_o <= `WriteDisable;
|
||||
mem_we <= `WriteDisable;
|
||||
reg_wdata <= `ZeroWord;
|
||||
end
|
||||
endcase
|
||||
|
|
|
|||
|
|
@ -34,7 +34,6 @@ module id(
|
|||
|
||||
// from ex
|
||||
input wire ex_jump_flag_i,
|
||||
input wire[`INT_BUS] ex_int_flag_i,
|
||||
|
||||
// to regs
|
||||
output reg[`RegAddrBus] reg1_raddr_o, // reg1 read addr
|
||||
|
|
@ -67,7 +66,7 @@ module id(
|
|||
|
||||
reg mem_req;
|
||||
|
||||
assign mem_req_o = ((mem_req == `RIB_REQ) && (ex_jump_flag_i == `JumpDisable) && (ex_int_flag_i == `INT_NONE));
|
||||
assign mem_req_o = ((mem_req == `RIB_REQ) && (ex_jump_flag_i == `JumpDisable));
|
||||
|
||||
|
||||
always @ (*) begin
|
||||
|
|
|
|||
|
|
@ -60,7 +60,7 @@ module id_ex(
|
|||
end else begin
|
||||
if (hold_flag_i >= `Hold_Id) begin
|
||||
inst_o <= `INST_NOP;
|
||||
inst_addr_o <= `ZeroWord;
|
||||
inst_addr_o <= inst_addr_i;
|
||||
reg_we_o <= `WriteDisable;
|
||||
reg_waddr_o <= `ZeroWord;
|
||||
reg1_rdata_o <= `ZeroWord;
|
||||
|
|
|
|||
|
|
@ -38,7 +38,7 @@ module if_id(
|
|||
inst_addr_o <= `ZeroWord;
|
||||
end else if (hold_flag_i >= `Hold_If) begin
|
||||
inst_o <= `INST_NOP;
|
||||
inst_addr_o <= `ZeroWord;
|
||||
inst_addr_o <= inst_addr_i;
|
||||
end else begin
|
||||
inst_o <= inst_i;
|
||||
inst_addr_o <= inst_addr_i;
|
||||
|
|
|
|||
|
|
@ -94,11 +94,6 @@ module tinyriscv(
|
|||
wire[`RegBus] ex_div_divisor_o;
|
||||
wire[2:0] ex_div_op_o;
|
||||
wire[`RegAddrBus] ex_div_reg_waddr_o;
|
||||
wire[`INT_BUS] ex_int_flag_o;
|
||||
wire[`InstAddrBus] ex_int_return_addr_o;
|
||||
wire ex_clint_we_o;
|
||||
wire[`RegAddrBus] ex_clint_addr_o;
|
||||
wire[`RegBus] ex_clint_data_o;
|
||||
wire[`RegBus] ex_csr_wdata_o;
|
||||
wire ex_csr_we_o;
|
||||
wire[`MemAddrBus] ex_csr_waddr_o;
|
||||
|
|
@ -109,6 +104,7 @@ module tinyriscv(
|
|||
|
||||
// csr reg
|
||||
wire[`RegBus] csr_data_o;
|
||||
wire[`RegBus] csr_clint_data_o;
|
||||
|
||||
// ctrl
|
||||
wire[`Hold_Flag_Bus] ctrl_hold_flag_o;
|
||||
|
|
@ -123,7 +119,12 @@ module tinyriscv(
|
|||
wire[`RegAddrBus] div_reg_waddr_o;
|
||||
|
||||
// clint
|
||||
wire clint_we_o;
|
||||
wire[`MemAddrBus] clint_waddr_o;
|
||||
wire[`MemAddrBus] clint_raddr_o;
|
||||
wire[`RegBus] clint_data_o;
|
||||
wire[`InstAddrBus] clint_int_addr_o;
|
||||
wire clint_int_assert_o;
|
||||
|
||||
|
||||
assign rib_ex_addr_o = (ex_mem_we_o == `WriteEnable)? ex_mem_waddr_o: ex_mem_raddr_o;
|
||||
|
|
@ -151,8 +152,6 @@ module tinyriscv(
|
|||
.hold_flag_ex_i(ex_hold_flag_o),
|
||||
.hold_flag_rib_i(rib_hold_flag_i),
|
||||
.hold_flag_o(ctrl_hold_flag_o),
|
||||
.int_flag_i(ex_int_flag_o),
|
||||
.int_return_addr_i(ex_int_return_addr_o),
|
||||
.jump_flag_o(ctrl_jump_flag_o),
|
||||
.jump_addr_o(ctrl_jump_addr_o),
|
||||
.jtag_halt_flag_i(jtag_halt_flag_i)
|
||||
|
|
@ -181,7 +180,12 @@ module tinyriscv(
|
|||
.raddr_i(id_csr_raddr_o),
|
||||
.waddr_i(ex_csr_waddr_o),
|
||||
.data_i(ex_csr_wdata_o),
|
||||
.data_o(csr_data_o)
|
||||
.data_o(csr_data_o),
|
||||
.clint_we_i(clint_we_o),
|
||||
.clint_raddr_i(clint_raddr_o),
|
||||
.clint_waddr_i(clint_waddr_o),
|
||||
.clint_data_i(clint_data_o),
|
||||
.clint_data_o(csr_clint_data_o)
|
||||
);
|
||||
|
||||
if_id u_if_id(
|
||||
|
|
@ -201,7 +205,6 @@ module tinyriscv(
|
|||
.reg1_rdata_i(regs_rdata1_o),
|
||||
.reg2_rdata_i(regs_rdata2_o),
|
||||
.ex_jump_flag_i(ex_jump_flag_o),
|
||||
.ex_int_flag_i(ex_int_flag_o),
|
||||
.reg1_raddr_o(id_reg1_raddr_o),
|
||||
.reg2_raddr_o(id_reg2_raddr_o),
|
||||
.mem_req_o(id_mem_req_o),
|
||||
|
|
@ -259,16 +262,11 @@ module tinyriscv(
|
|||
.reg_wdata_o(ex_reg_wdata_o),
|
||||
.reg_we_o(ex_reg_we_o),
|
||||
.reg_waddr_o(ex_reg_waddr_o),
|
||||
.clint_we_o(ex_clint_we_o),
|
||||
.clint_addr_o(ex_clint_addr_o),
|
||||
.clint_data_o(ex_clint_data_o),
|
||||
.clint_data_i(clint_data_o),
|
||||
.int_return_addr_o(ex_int_return_addr_o),
|
||||
.hold_flag_o(ex_hold_flag_o),
|
||||
.jump_flag_o(ex_jump_flag_o),
|
||||
.jump_addr_o(ex_jump_addr_o),
|
||||
.int_flag_i(int_i),
|
||||
.int_flag_o(ex_int_flag_o),
|
||||
.int_assert_i(clint_int_assert_o),
|
||||
.int_addr_i(clint_int_addr_o),
|
||||
.div_ready_i(div_ready_o),
|
||||
.div_result_i(div_result_o),
|
||||
.div_busy_i(div_busy_o),
|
||||
|
|
@ -305,10 +303,17 @@ module tinyriscv(
|
|||
clint u_clint(
|
||||
.clk(clk),
|
||||
.rst(rst),
|
||||
.we_i(ex_clint_we_o),
|
||||
.addr_i(ex_clint_addr_o),
|
||||
.data_i(ex_clint_data_o),
|
||||
.data_o(clint_data_o)
|
||||
.int_flag_i(int_i),
|
||||
.inst_i(id_inst_o),
|
||||
.inst_addr_i(id_inst_addr_o),
|
||||
.hold_flag_i(ctrl_hold_flag_o),
|
||||
.data_i(csr_clint_data_o),
|
||||
.we_o(clint_we_o),
|
||||
.waddr_o(clint_waddr_o),
|
||||
.raddr_o(clint_raddr_o),
|
||||
.data_o(clint_data_o),
|
||||
.int_addr_o(clint_int_addr_o),
|
||||
.int_assert_o(clint_int_assert_o)
|
||||
);
|
||||
|
||||
endmodule
|
||||
|
|
|
|||
|
|
@ -34,9 +34,9 @@ module timer(
|
|||
|
||||
);
|
||||
|
||||
localparam ctrl_reg = 32'h00;
|
||||
localparam count_reg = 32'h04;
|
||||
localparam value_reg = 32'h08;
|
||||
localparam REG_CTRL = 4'h0;
|
||||
localparam REG_COUNT = 4'h4;
|
||||
localparam REG_VALUE = 4'h8;
|
||||
|
||||
// [0]: timer enable
|
||||
// [1]: timer int enable
|
||||
|
|
@ -53,28 +53,16 @@ module timer(
|
|||
reg[31:0] timer_value;
|
||||
|
||||
|
||||
assign int_sig_o = ((timer_ctrl[0] == 1'b1) && (timer_ctrl[1] == 1'b1) && (timer_ctrl[2] == 1'b1)) ? `INT_ASSERT : `INT_DEASSERT;
|
||||
assign int_sig_o = (timer_ctrl[2:1] == 3'h3)? `INT_ASSERT: `INT_DEASSERT;
|
||||
|
||||
|
||||
// write timer regs
|
||||
// write ctrl reg
|
||||
always @ (posedge clk) begin
|
||||
if (rst == `RstEnable) begin
|
||||
timer_count <= `ZeroWord;
|
||||
timer_value <= `ZeroWord;
|
||||
timer_ctrl <= `ZeroWord;
|
||||
ack_o <= `RIB_ACK;
|
||||
end else begin
|
||||
if (timer_ctrl[0] == 1'b1) begin
|
||||
timer_count <= timer_count + 1'b1;
|
||||
if (timer_count == timer_value) begin
|
||||
timer_ctrl[2] <= 1'b1;
|
||||
timer_count <= `ZeroWord;
|
||||
end
|
||||
end
|
||||
if (we_i == `WriteEnable) begin
|
||||
if (addr_i == value_reg) begin
|
||||
timer_value <= data_i;
|
||||
end else if (addr_i == ctrl_reg) begin
|
||||
if (addr_i[3:0] == REG_CTRL) begin
|
||||
if (data_i[2] == 1'b0) begin
|
||||
timer_ctrl <= {data_i[31:3], timer_ctrl[2], data_i[1:0]};
|
||||
// write 1 to clear pending
|
||||
|
|
@ -82,6 +70,41 @@ module timer(
|
|||
timer_ctrl <= {data_i[31:3], 1'b0, data_i[1:0]};
|
||||
end
|
||||
end
|
||||
end else begin
|
||||
// generate int pending
|
||||
if (timer_count >= timer_value && timer_value > 32'h0) begin
|
||||
timer_ctrl[2] <= 1'b1;
|
||||
timer_ctrl[0] <= 1'b0;
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
// write value reg
|
||||
always @ (posedge clk) begin
|
||||
if (rst == `RstEnable) begin
|
||||
timer_value <= `ZeroWord;
|
||||
end else begin
|
||||
if (we_i == `WriteEnable) begin
|
||||
if (addr_i[3:0] == REG_VALUE) begin
|
||||
timer_value <= data_i;
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
// counter
|
||||
always @ (posedge clk) begin
|
||||
if (rst == `RstEnable) begin
|
||||
timer_count <= `ZeroWord;
|
||||
end else begin
|
||||
if (timer_ctrl[0] == 1'b1 && timer_value > 32'h0) begin
|
||||
timer_count <= timer_count + 1'b1;
|
||||
//if (timer_count == timer_value) begin
|
||||
// timer_count <= `ZeroWord;
|
||||
//end
|
||||
end else begin
|
||||
timer_count <= `ZeroWord;
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
@ -91,14 +114,14 @@ module timer(
|
|||
if (rst == `RstEnable) begin
|
||||
data_o <= `ZeroWord;
|
||||
end else begin
|
||||
case (addr_i)
|
||||
value_reg: begin
|
||||
case (addr_i[3:0])
|
||||
REG_VALUE: begin
|
||||
data_o <= timer_value;
|
||||
end
|
||||
ctrl_reg: begin
|
||||
REG_CTRL: begin
|
||||
data_o <= timer_ctrl;
|
||||
end
|
||||
count_reg: begin
|
||||
REG_COUNT: begin
|
||||
data_o <= timer_count;
|
||||
end
|
||||
default: begin
|
||||
|
|
|
|||
526
sim/inst.data
526
sim/inst.data
|
|
@ -1,354 +1,182 @@
|
|||
10001197
|
||||
80018193
|
||||
10002117
|
||||
ff810113
|
||||
00000d13
|
||||
00000d93
|
||||
00000093
|
||||
00000113
|
||||
00208f33
|
||||
00000e93
|
||||
00200193
|
||||
4ddf1663
|
||||
00100093
|
||||
00100113
|
||||
00208f33
|
||||
00200e93
|
||||
00300193
|
||||
4bdf1a63
|
||||
00300093
|
||||
00700113
|
||||
00208f33
|
||||
00a00e93
|
||||
00400193
|
||||
49df1e63
|
||||
00000093
|
||||
ffff8137
|
||||
00208f33
|
||||
ffff8eb7
|
||||
00500193
|
||||
49df1263
|
||||
800000b7
|
||||
00000113
|
||||
00208f33
|
||||
80000eb7
|
||||
00600193
|
||||
47df1663
|
||||
800000b7
|
||||
ffff8137
|
||||
00208f33
|
||||
7fff8eb7
|
||||
00700193
|
||||
45df1a63
|
||||
00000093
|
||||
00008137
|
||||
fff10113
|
||||
00208f33
|
||||
00008eb7
|
||||
fffe8e93
|
||||
00800193
|
||||
43df1a63
|
||||
800000b7
|
||||
fff08093
|
||||
00000113
|
||||
00208f33
|
||||
80000eb7
|
||||
fffe8e93
|
||||
00900193
|
||||
41df1a63
|
||||
800000b7
|
||||
fff08093
|
||||
00008137
|
||||
fff10113
|
||||
00208f33
|
||||
80008eb7
|
||||
ffee8e93
|
||||
00a00193
|
||||
3fdf1863
|
||||
800000b7
|
||||
00008137
|
||||
fff10113
|
||||
00208f33
|
||||
80008eb7
|
||||
fffe8e93
|
||||
00b00193
|
||||
3ddf1863
|
||||
800000b7
|
||||
fff08093
|
||||
ffff8137
|
||||
00208f33
|
||||
7fff8eb7
|
||||
fffe8e93
|
||||
00c00193
|
||||
3bdf1863
|
||||
00000093
|
||||
fff00113
|
||||
00208f33
|
||||
fff00e93
|
||||
00d00193
|
||||
39df1c63
|
||||
fff00093
|
||||
00100113
|
||||
00208f33
|
||||
00000e93
|
||||
00e00193
|
||||
39df1063
|
||||
fff00093
|
||||
fff00113
|
||||
00208f33
|
||||
ffe00e93
|
||||
00f00193
|
||||
37df1463
|
||||
00100093
|
||||
80000137
|
||||
fff10113
|
||||
00208f33
|
||||
80000eb7
|
||||
01000193
|
||||
35df1663
|
||||
00d00093
|
||||
00b00113
|
||||
002080b3
|
||||
01800e93
|
||||
01100193
|
||||
33d09a63
|
||||
00e00093
|
||||
00b00113
|
||||
00208133
|
||||
01900e93
|
||||
01200193
|
||||
31d11e63
|
||||
00d00093
|
||||
001080b3
|
||||
01a00e93
|
||||
01300193
|
||||
31d09463
|
||||
00000213
|
||||
00d00093
|
||||
00b00113
|
||||
00208f33
|
||||
000f0313
|
||||
00120213
|
||||
00200293
|
||||
fe5214e3
|
||||
01800e93
|
||||
01400193
|
||||
2dd31e63
|
||||
00000213
|
||||
00e00093
|
||||
00b00113
|
||||
00208f33
|
||||
00000013
|
||||
000f0313
|
||||
00120213
|
||||
00200293
|
||||
fe5212e3
|
||||
01900e93
|
||||
01500193
|
||||
2bd31663
|
||||
00000213
|
||||
00f00093
|
||||
00b00113
|
||||
00208f33
|
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|
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|
||||
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||||
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|
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|
||||
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|
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|
||||
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|
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|
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|
||||
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|
||||
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|
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|
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|
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|
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|
||||
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|
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|
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|
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|
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|
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|
||||
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|
||||
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|
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|
||||
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|
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|
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|
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|
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|
||||
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|
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|
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|
||||
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|
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|
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|
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|
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fe5212e3
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|
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|
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|
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|
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|
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|
||||
fe5214e3
|
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|
||||
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|
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|
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|
||||
00b00113
|
||||
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|
||||
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|
||||
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|
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|
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|
||||
00200293
|
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fe5212e3
|
||||
01a00e93
|
||||
01f00193
|
||||
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|
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|
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00b00113
|
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|
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|
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00208f33
|
||||
00120213
|
||||
00200293
|
||||
fe5214e3
|
||||
01800e93
|
||||
02000193
|
||||
0bdf1c63
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
00200293
|
||||
fe5212e3
|
||||
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|
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02100193
|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
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|
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00200293
|
||||
fe5212e3
|
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01a00e93
|
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|
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|
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|
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|
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
01e00113
|
||||
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|
||||
00000e93
|
||||
02600193
|
||||
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|
||||
00301863
|
||||
2d800513
|
||||
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|
||||
fe458593
|
||||
10000617
|
||||
fdc60613
|
||||
00c5fc63
|
||||
00052283
|
||||
0055a023
|
||||
00450513
|
||||
00458593
|
||||
fec5e8e3
|
||||
10000517
|
||||
fbc50513
|
||||
80818593
|
||||
00b57863
|
||||
00052023
|
||||
00450513
|
||||
feb56ce3
|
||||
250000ef
|
||||
10c000ef
|
||||
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|
||||
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|
||||
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|
||||
00100d13
|
||||
f8010113
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
00512a23
|
||||
00612c23
|
||||
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|
||||
02812023
|
||||
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|
||||
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|
||||
02b12623
|
||||
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|
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|
||||
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|
||||
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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|
||||
07d12a23
|
||||
07e12c23
|
||||
07f12e23
|
||||
34202573
|
||||
198000ef
|
||||
00412083
|
||||
00812103
|
||||
00c12183
|
||||
01012203
|
||||
01412283
|
||||
01812303
|
||||
01c12383
|
||||
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|
||||
02412483
|
||||
02812503
|
||||
02c12583
|
||||
03012603
|
||||
03412683
|
||||
03812703
|
||||
03c12783
|
||||
04012803
|
||||
04412883
|
||||
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|
||||
04c12983
|
||||
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|
||||
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|
||||
05812b03
|
||||
05c12b83
|
||||
06012c03
|
||||
06412c83
|
||||
07012e03
|
||||
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|
||||
07812f03
|
||||
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|
||||
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|
||||
30200073
|
||||
0000006f
|
||||
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|
||||
00812623
|
||||
01010413
|
||||
10000797
|
||||
e8478793
|
||||
0007a023
|
||||
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|
||||
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|
||||
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|
||||
200007b7
|
||||
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|
||||
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|
||||
00e7a023
|
||||
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|
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|
||||
00e7a023
|
||||
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|
||||
e5478793
|
||||
0007c783
|
||||
0ff7f793
|
||||
fe0788e3
|
||||
200007b7
|
||||
0007a703
|
||||
200007b7
|
||||
00176713
|
||||
00e7a023
|
||||
10000797
|
||||
e2c78793
|
||||
00078023
|
||||
10000797
|
||||
e1c78793
|
||||
0007a783
|
||||
00178713
|
||||
10000797
|
||||
e0c78793
|
||||
00e7a023
|
||||
10000797
|
||||
e0078793
|
||||
0007a703
|
||||
00200793
|
||||
faf710e3
|
||||
200007b7
|
||||
0007a023
|
||||
10000797
|
||||
de478793
|
||||
0007a023
|
||||
00100d93
|
||||
0000006f
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000000
|
||||
00000013
|
||||
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|
||||
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|
||||
00c12403
|
||||
01010113
|
||||
00008067
|
||||
ff010113
|
||||
00812623
|
||||
01010413
|
||||
200007b7
|
||||
0007a703
|
||||
200007b7
|
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00476713
|
||||
00e7a023
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10000797
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||||
da078793
|
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00100713
|
||||
00e78023
|
||||
00000013
|
||||
00c12403
|
||||
01010113
|
||||
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|
||||
fe010113
|
||||
00112e23
|
||||
00812c23
|
||||
02010413
|
||||
fea42623
|
||||
fadff0ef
|
||||
00000013
|
||||
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|
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01812403
|
||||
02010113
|
||||
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|
||||
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|
||||
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|
||||
01010413
|
||||
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|
||||
db478793
|
||||
30579073
|
||||
00000013
|
||||
00c12403
|
||||
01010113
|
||||
00008067
|
||||
|
|
|
|||
22552
sim/out.vvp
22552
sim/out.vvp
File diff suppressed because one or more lines are too long
|
|
@ -1,2 +1,2 @@
|
|||
iverilog -s tinyriscv_soc_tb -o out.vvp -I ..\rtl\core tinyriscv_soc_tb.v ..\rtl\core\defines.v ..\rtl\core\ex.v ..\rtl\core\id.v ..\rtl\core\tinyriscv.v ..\rtl\core\pc_reg.v ..\rtl\core\id_ex.v ..\rtl\core\ctrl.v ..\rtl\core\regs.v ..\rtl\core\ram.v ..\rtl\core\rom.v ..\rtl\core\if_id.v ..\rtl\core\div.v ..\rtl\core\rib.v ..\rtl\core\clint.v ..\rtl\core\csr_reg.v ..\rtl\debug\jtag_dm.v ..\rtl\debug\jtag_driver.v ..\rtl\debug\jtag_top.v ..\rtl\perips\timer.v ..\rtl\perips\uart_tx.v ..\rtl\perips\gpio.v ..\rtl\soc\tinyriscv_soc_top.v
|
||||
iverilog -s tinyriscv_soc_tb -o out.vvp -I ..\rtl\core tinyriscv_soc_tb.v ..\rtl\core\defines.v ..\rtl\core\ex.v ..\rtl\core\id.v ..\rtl\core\tinyriscv.v ..\rtl\core\pc_reg.v ..\rtl\core\id_ex.v ..\rtl\core\ctrl.v ..\rtl\core\regs.v ..\rtl\perips\ram.v ..\rtl\perips\rom.v ..\rtl\core\if_id.v ..\rtl\core\div.v ..\rtl\core\rib.v ..\rtl\core\clint.v ..\rtl\core\csr_reg.v ..\rtl\debug\jtag_dm.v ..\rtl\debug\jtag_driver.v ..\rtl\debug\jtag_top.v ..\rtl\perips\timer.v ..\rtl\perips\uart_tx.v ..\rtl\perips\gpio.v ..\rtl\soc\tinyriscv_soc_top.v
|
||||
vvp out.vvp
|
||||
|
|
|
|||
|
|
@ -1,3 +1,3 @@
|
|||
..\tools\BinToMem_CLI.exe %1 %2
|
||||
iverilog -s tinyriscv_soc_tb -o out.vvp -I ..\rtl\core tinyriscv_soc_tb.v ..\rtl\core\defines.v ..\rtl\core\ex.v ..\rtl\core\id.v ..\rtl\core\tinyriscv.v ..\rtl\core\pc_reg.v ..\rtl\core\id_ex.v ..\rtl\core\ctrl.v ..\rtl\core\regs.v ..\rtl\core\ram.v ..\rtl\core\rom.v ..\rtl\core\if_id.v ..\rtl\core\div.v ..\rtl\core\rib.v ..\rtl\core\clint.v ..\rtl\core\csr_reg.v ..\rtl\debug\jtag_dm.v ..\rtl\debug\jtag_driver.v ..\rtl\debug\jtag_top.v ..\rtl\perips\timer.v ..\rtl\perips\uart_tx.v ..\rtl\perips\gpio.v ..\rtl\soc\tinyriscv_soc_top.v
|
||||
iverilog -s tinyriscv_soc_tb -o out.vvp -I ..\rtl\core tinyriscv_soc_tb.v ..\rtl\core\defines.v ..\rtl\core\ex.v ..\rtl\core\id.v ..\rtl\core\tinyriscv.v ..\rtl\core\pc_reg.v ..\rtl\core\id_ex.v ..\rtl\core\ctrl.v ..\rtl\core\regs.v ..\rtl\perips\ram.v ..\rtl\perips\rom.v ..\rtl\core\if_id.v ..\rtl\core\div.v ..\rtl\core\rib.v ..\rtl\core\clint.v ..\rtl\core\csr_reg.v ..\rtl\debug\jtag_dm.v ..\rtl\debug\jtag_driver.v ..\rtl\debug\jtag_top.v ..\rtl\perips\timer.v ..\rtl\perips\uart_tx.v ..\rtl\perips\gpio.v ..\rtl\soc\tinyriscv_soc_top.v
|
||||
vvp out.vvp
|
||||
|
|
|
|||
158161
sim/tinyriscv_soc_tb.vcd
158161
sim/tinyriscv_soc_tb.vcd
File diff suppressed because it is too large
Load Diff
|
|
@ -1,13 +1,6 @@
|
|||
|
||||
RISCV_ARCH := rv32im
|
||||
RISCV_ABI := ilp32
|
||||
|
||||
RISCV_PATH := ../../../tools/gnu-mcu-eclipse-riscv-none-gcc-8.2.0-2.2-20190521-0004-win64/
|
||||
|
||||
CFLAGS += -march=$(RISCV_ARCH)
|
||||
CFLAGS += -mabi=$(RISCV_ABI)
|
||||
CFLAGS += -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles
|
||||
|
||||
RISCV_GCC := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-gcc)
|
||||
RISCV_AS := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-as)
|
||||
RISCV_GXX := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-g++)
|
||||
|
|
@ -16,3 +9,52 @@ RISCV_GDB := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-gdb)
|
|||
RISCV_AR := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-ar)
|
||||
RISCV_OBJCOPY := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-objcopy)
|
||||
RISCV_READELF := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-readelf)
|
||||
|
||||
|
||||
|
||||
.PHONY: all
|
||||
all: $(TARGET)
|
||||
|
||||
|
||||
COMMON_DIR = ..
|
||||
|
||||
ASM_SRCS += $(COMMON_DIR)/start.S
|
||||
ASM_SRCS += $(COMMON_DIR)/trap_entry.S
|
||||
C_SRCS += $(COMMON_DIR)/init.c
|
||||
C_SRCS += $(COMMON_DIR)/lib/utils.c
|
||||
C_SRCS += $(COMMON_DIR)/lib/xprintf.c
|
||||
|
||||
|
||||
LINKER_SCRIPT := $(COMMON_DIR)/link.lds
|
||||
|
||||
INCLUDES += -I$(COMMON_DIR)
|
||||
|
||||
LDFLAGS += -T $(LINKER_SCRIPT) -nostartfiles -Wl,--gc-sections -Wl,--check-sections
|
||||
|
||||
ASM_OBJS := $(ASM_SRCS:.S=.o)
|
||||
C_OBJS := $(C_SRCS:.c=.o)
|
||||
|
||||
LINK_OBJS += $(ASM_OBJS) $(C_OBJS)
|
||||
LINK_DEPS += $(LINKER_SCRIPT)
|
||||
|
||||
CLEAN_OBJS += $(TARGET) $(LINK_OBJS) $(TARGET).dump $(TARGET).bin
|
||||
|
||||
#CFLAGS += -g
|
||||
CFLAGS += -march=$(RISCV_ARCH)
|
||||
CFLAGS += -mabi=$(RISCV_ABI)
|
||||
CFLAGS += -mcmodel=medany -ffunction-sections -fdata-sections -fno-builtin-printf -fno-builtin-malloc
|
||||
|
||||
$(TARGET): $(LINK_OBJS) $(LINK_DEPS)
|
||||
$(RISCV_GCC) $(CFLAGS) $(INCLUDES) $(LINK_OBJS) -o $@ $(LDFLAGS)
|
||||
$(RISCV_OBJCOPY) -O binary $@ $@.bin
|
||||
$(RISCV_OBJDUMP) --disassemble-all $@ > $@.dump
|
||||
|
||||
$(ASM_OBJS): %.o: %.S
|
||||
$(RISCV_GCC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
|
||||
|
||||
$(C_OBJS): %.o: %.c
|
||||
$(RISCV_GCC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
rm -f $(CLEAN_OBJS)
|
||||
|
|
|
|||
|
|
@ -1,9 +1,18 @@
|
|||
RISCV_ARCH := rv32im
|
||||
RISCV_ABI := ilp32
|
||||
|
||||
|
||||
TARGET = gpio
|
||||
|
||||
|
||||
#CFLAGS += -DSIMULATION
|
||||
#CFLAGS += -O2
|
||||
#ASM_SRCS +=
|
||||
#LDFLAGS +=
|
||||
#INCLUDES += -I.
|
||||
|
||||
C_SRCS := \
|
||||
main.c \
|
||||
|
||||
|
||||
include ../common.mk
|
||||
|
||||
|
||||
.PHONY: all
|
||||
all:
|
||||
$(RISCV_GCC) $(CFLAGS) ../start.S main.c -T ../link.lds -o gpio
|
||||
$(RISCV_OBJCOPY) -O binary gpio gpio.bin
|
||||
$(RISCV_OBJDUMP) --disassemble-all gpio > gpio.dump
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
|
|
@ -5,38 +5,38 @@ gpio: file format elf32-littleriscv
|
|||
Disassembly of section .init:
|
||||
|
||||
00000000 <_start>:
|
||||
0: 0080006f j 8 <_reset_handler>
|
||||
4: 0640006f j 68 <_timer0_handler>
|
||||
|
||||
00000008 <_reset_handler>:
|
||||
8: 10000197 auipc gp,0x10000
|
||||
c: 7f818193 addi gp,gp,2040 # 10000800 <__global_pointer$>
|
||||
10: 00018113 mv sp,gp
|
||||
14: 2d400513 li a0,724
|
||||
18: 10000597 auipc a1,0x10000
|
||||
1c: fe858593 addi a1,a1,-24 # 10000000 <_data>
|
||||
20: 10000617 auipc a2,0x10000
|
||||
24: fe060613 addi a2,a2,-32 # 10000000 <_data>
|
||||
28: 00c5fc63 bgeu a1,a2,40 <_reset_handler+0x38>
|
||||
2c: 00052283 lw t0,0(a0)
|
||||
30: 0055a023 sw t0,0(a1)
|
||||
34: 00450513 addi a0,a0,4
|
||||
38: 00458593 addi a1,a1,4
|
||||
3c: fec5e8e3 bltu a1,a2,2c <_reset_handler+0x24>
|
||||
40: 10000517 auipc a0,0x10000
|
||||
44: fc050513 addi a0,a0,-64 # 10000000 <_data>
|
||||
48: 10000597 auipc a1,0x10000
|
||||
4c: fb858593 addi a1,a1,-72 # 10000000 <_data>
|
||||
50: 00b57863 bgeu a0,a1,60 <_reset_handler+0x58>
|
||||
54: 00052023 sw zero,0(a0)
|
||||
58: 00450513 addi a0,a0,4
|
||||
5c: feb56ce3 bltu a0,a1,54 <_reset_handler+0x4c>
|
||||
60: 23c000ef jal ra,29c <main>
|
||||
0: 10001197 auipc gp,0x10001
|
||||
4: 80018193 addi gp,gp,-2048 # 10000800 <__global_pointer$>
|
||||
8: 10002117 auipc sp,0x10002
|
||||
c: ff810113 addi sp,sp,-8 # 10002000 <_sp>
|
||||
10: 34000513 li a0,832
|
||||
14: 10000597 auipc a1,0x10000
|
||||
18: fec58593 addi a1,a1,-20 # 10000000 <__bss_start>
|
||||
1c: 10000617 auipc a2,0x10000
|
||||
20: fe460613 addi a2,a2,-28 # 10000000 <__bss_start>
|
||||
24: 00c5fc63 bgeu a1,a2,3c <_start+0x3c>
|
||||
28: 00052283 lw t0,0(a0)
|
||||
2c: 0055a023 sw t0,0(a1)
|
||||
30: 00450513 addi a0,a0,4
|
||||
34: 00458593 addi a1,a1,4
|
||||
38: fec5e8e3 bltu a1,a2,28 <_start+0x28>
|
||||
3c: 10000517 auipc a0,0x10000
|
||||
40: fc450513 addi a0,a0,-60 # 10000000 <__bss_start>
|
||||
44: 10000597 auipc a1,0x10000
|
||||
48: fbc58593 addi a1,a1,-68 # 10000000 <__bss_start>
|
||||
4c: 00b57863 bgeu a0,a1,5c <_start+0x5c>
|
||||
50: 00052023 sw zero,0(a0)
|
||||
54: 00450513 addi a0,a0,4
|
||||
58: feb56ce3 bltu a0,a1,50 <_start+0x50>
|
||||
5c: 188000ef jal ra,1e4 <_init>
|
||||
60: 118000ef jal ra,178 <main>
|
||||
|
||||
00000064 <loop>:
|
||||
64: 0000006f j 64 <loop>
|
||||
|
||||
00000068 <_timer0_handler>:
|
||||
Disassembly of section .text:
|
||||
|
||||
00000068 <trap_entry>:
|
||||
68: f8010113 addi sp,sp,-128
|
||||
6c: 00112223 sw ra,4(sp)
|
||||
70: 00212423 sw sp,8(sp)
|
||||
|
|
@ -69,8 +69,8 @@ Disassembly of section .init:
|
|||
dc: 07d12a23 sw t4,116(sp)
|
||||
e0: 07e12c23 sw t5,120(sp)
|
||||
e4: 07f12e23 sw t6,124(sp)
|
||||
e8: 00000097 auipc ra,0x0
|
||||
ec: 000000e7 jalr zero # 0 <_start>
|
||||
e8: 34202573 csrr a0,mcause
|
||||
ec: 0c8000ef jal ra,1b4 <trap_handler>
|
||||
f0: 00412083 lw ra,4(sp)
|
||||
f4: 00812103 lw sp,8(sp)
|
||||
f8: 00c12183 lw gp,12(sp)
|
||||
|
|
@ -104,104 +104,135 @@ Disassembly of section .init:
|
|||
168: 07c12f83 lw t6,124(sp)
|
||||
16c: 08010113 addi sp,sp,128
|
||||
170: 30200073 mret
|
||||
174: 0000006f j 174 <trap_entry+0x10c>
|
||||
|
||||
Disassembly of section .text:
|
||||
00000178 <main>:
|
||||
178: ff010113 addi sp,sp,-16
|
||||
17c: 00112623 sw ra,12(sp)
|
||||
180: 00812423 sw s0,8(sp)
|
||||
184: 01010413 addi s0,sp,16
|
||||
188: 400007b7 lui a5,0x40000
|
||||
18c: 00478793 addi a5,a5,4 # 40000004 <_sp+0x2fffe004>
|
||||
190: 0007a703 lw a4,0(a5)
|
||||
194: 400007b7 lui a5,0x40000
|
||||
198: 00478793 addi a5,a5,4 # 40000004 <_sp+0x2fffe004>
|
||||
19c: 00174713 xori a4,a4,1
|
||||
1a0: 00e7a023 sw a4,0(a5)
|
||||
1a4: 0007a7b7 lui a5,0x7a
|
||||
1a8: 12078513 addi a0,a5,288 # 7a120 <__stack_size+0x79920>
|
||||
1ac: 0e0000ef jal ra,28c <busy_wait>
|
||||
1b0: fd9ff06f j 188 <main+0x10>
|
||||
|
||||
00000174 <delay_ms>:
|
||||
174: fb010113 addi sp,sp,-80
|
||||
178: 04812623 sw s0,76(sp)
|
||||
17c: 05010413 addi s0,sp,80
|
||||
180: faa42e23 sw a0,-68(s0)
|
||||
184: c0002773 rdcycle a4
|
||||
188: fee42623 sw a4,-20(s0)
|
||||
18c: fec42703 lw a4,-20(s0)
|
||||
190: fee42023 sw a4,-32(s0)
|
||||
194: fe042223 sw zero,-28(s0)
|
||||
198: c8002773 rdcycleh a4
|
||||
19c: fce42e23 sw a4,-36(s0)
|
||||
1a0: fdc42703 lw a4,-36(s0)
|
||||
1a4: 00070793 mv a5,a4
|
||||
1a8: 00000813 li a6,0
|
||||
1ac: 00079e93 slli t4,a5,0x0
|
||||
1b0: 00000e13 li t3,0
|
||||
1b4: fe042683 lw a3,-32(s0)
|
||||
1b8: fe442703 lw a4,-28(s0)
|
||||
1bc: 01c687b3 add a5,a3,t3
|
||||
1c0: 00078513 mv a0,a5
|
||||
1c4: 00d53533 sltu a0,a0,a3
|
||||
1c8: 01d70833 add a6,a4,t4
|
||||
1cc: 01050733 add a4,a0,a6
|
||||
1d0: 00070813 mv a6,a4
|
||||
1d4: fef42023 sw a5,-32(s0)
|
||||
1d8: ff042223 sw a6,-28(s0)
|
||||
1dc: c00027f3 rdcycle a5
|
||||
1e0: fcf42c23 sw a5,-40(s0)
|
||||
1e4: fd842783 lw a5,-40(s0)
|
||||
1e8: fcf42823 sw a5,-48(s0)
|
||||
1ec: fc042a23 sw zero,-44(s0)
|
||||
1f0: c80027f3 rdcycleh a5
|
||||
1f4: fcf42623 sw a5,-52(s0)
|
||||
1f8: fcc42783 lw a5,-52(s0)
|
||||
1fc: 00078f13 mv t5,a5
|
||||
200: 00000f93 li t6,0
|
||||
204: 000f1393 slli t2,t5,0x0
|
||||
208: 00000313 li t1,0
|
||||
20c: fd042683 lw a3,-48(s0)
|
||||
210: fd442703 lw a4,-44(s0)
|
||||
214: 006687b3 add a5,a3,t1
|
||||
218: 00078513 mv a0,a5
|
||||
21c: 00d53533 sltu a0,a0,a3
|
||||
220: 00770833 add a6,a4,t2
|
||||
224: 01050733 add a4,a0,a6
|
||||
228: 00070813 mv a6,a4
|
||||
22c: fcf42823 sw a5,-48(s0)
|
||||
230: fd042a23 sw a6,-44(s0)
|
||||
234: fbc42703 lw a4,-68(s0)
|
||||
238: 0000c7b7 lui a5,0xc
|
||||
23c: 35078793 addi a5,a5,848 # c350 <__stack_size+0xbf50>
|
||||
240: 02f707b3 mul a5,a4,a5
|
||||
244: 00078593 mv a1,a5
|
||||
248: 00000613 li a2,0
|
||||
24c: fe042683 lw a3,-32(s0)
|
||||
250: fe442703 lw a4,-28(s0)
|
||||
254: 00d587b3 add a5,a1,a3
|
||||
258: 00078513 mv a0,a5
|
||||
25c: 00b53533 sltu a0,a0,a1
|
||||
260: 00e60833 add a6,a2,a4
|
||||
264: 01050733 add a4,a0,a6
|
||||
268: 00070813 mv a6,a4
|
||||
26c: fd442703 lw a4,-44(s0)
|
||||
270: 00080693 mv a3,a6
|
||||
274: f6d764e3 bltu a4,a3,1dc <delay_ms+0x68>
|
||||
278: fd442703 lw a4,-44(s0)
|
||||
27c: 00080693 mv a3,a6
|
||||
280: 00d71663 bne a4,a3,28c <delay_ms+0x118>
|
||||
284: fd042703 lw a4,-48(s0)
|
||||
288: f4f76ae3 bltu a4,a5,1dc <delay_ms+0x68>
|
||||
28c: 00000013 nop
|
||||
290: 04c12403 lw s0,76(sp)
|
||||
294: 05010113 addi sp,sp,80
|
||||
298: 00008067 ret
|
||||
000001b4 <trap_handler>:
|
||||
1b4: fe010113 addi sp,sp,-32
|
||||
1b8: 00112e23 sw ra,28(sp)
|
||||
1bc: 00812c23 sw s0,24(sp)
|
||||
1c0: 02010413 addi s0,sp,32
|
||||
1c4: fea42623 sw a0,-20(s0)
|
||||
1c8: 00000097 auipc ra,0x0
|
||||
1cc: 000000e7 jalr zero # 0 <_start>
|
||||
1d0: 00000013 nop
|
||||
1d4: 01c12083 lw ra,28(sp)
|
||||
1d8: 01812403 lw s0,24(sp)
|
||||
1dc: 02010113 addi sp,sp,32
|
||||
1e0: 00008067 ret
|
||||
|
||||
0000029c <main>:
|
||||
29c: ff010113 addi sp,sp,-16
|
||||
2a0: 00112623 sw ra,12(sp)
|
||||
2a4: 00812423 sw s0,8(sp)
|
||||
2a8: 01010413 addi s0,sp,16
|
||||
2ac: 400007b7 lui a5,0x40000
|
||||
2b0: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
2b4: 0007a703 lw a4,0(a5)
|
||||
2b8: 400007b7 lui a5,0x40000
|
||||
2bc: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
2c0: 00174713 xori a4,a4,1
|
||||
2c4: 00e7a023 sw a4,0(a5)
|
||||
2c8: 1f400513 li a0,500
|
||||
2cc: ea9ff0ef jal ra,174 <delay_ms>
|
||||
2d0: fddff06f j 2ac <main+0x10>
|
||||
000001e4 <_init>:
|
||||
1e4: ff010113 addi sp,sp,-16
|
||||
1e8: 00812623 sw s0,12(sp)
|
||||
1ec: 01010413 addi s0,sp,16
|
||||
1f0: 00000797 auipc a5,0x0
|
||||
1f4: e7878793 addi a5,a5,-392 # 68 <trap_entry>
|
||||
1f8: 30579073 csrw mtvec,a5
|
||||
1fc: 00000013 nop
|
||||
200: 00c12403 lw s0,12(sp)
|
||||
204: 01010113 addi sp,sp,16
|
||||
208: 00008067 ret
|
||||
|
||||
0000020c <get_cycle_value>:
|
||||
20c: fd010113 addi sp,sp,-48
|
||||
210: 02812623 sw s0,44(sp)
|
||||
214: 03010413 addi s0,sp,48
|
||||
218: c0002773 rdcycle a4
|
||||
21c: fee42623 sw a4,-20(s0)
|
||||
220: fec42703 lw a4,-20(s0)
|
||||
224: fee42023 sw a4,-32(s0)
|
||||
228: fe042223 sw zero,-28(s0)
|
||||
22c: c8002773 rdcycleh a4
|
||||
230: fce42e23 sw a4,-36(s0)
|
||||
234: fdc42703 lw a4,-36(s0)
|
||||
238: 00070793 mv a5,a4
|
||||
23c: 00000813 li a6,0
|
||||
240: 00079613 slli a2,a5,0x0
|
||||
244: 00000593 li a1,0
|
||||
248: fe042683 lw a3,-32(s0)
|
||||
24c: fe442703 lw a4,-28(s0)
|
||||
250: 00b687b3 add a5,a3,a1
|
||||
254: 00078513 mv a0,a5
|
||||
258: 00d53533 sltu a0,a0,a3
|
||||
25c: 00c70833 add a6,a4,a2
|
||||
260: 01050733 add a4,a0,a6
|
||||
264: 00070813 mv a6,a4
|
||||
268: fef42023 sw a5,-32(s0)
|
||||
26c: ff042223 sw a6,-28(s0)
|
||||
270: fe042783 lw a5,-32(s0)
|
||||
274: fe442803 lw a6,-28(s0)
|
||||
278: 00078513 mv a0,a5
|
||||
27c: 00080593 mv a1,a6
|
||||
280: 02c12403 lw s0,44(sp)
|
||||
284: 03010113 addi sp,sp,48
|
||||
288: 00008067 ret
|
||||
|
||||
0000028c <busy_wait>:
|
||||
28c: fd010113 addi sp,sp,-48
|
||||
290: 02112623 sw ra,44(sp)
|
||||
294: 02812423 sw s0,40(sp)
|
||||
298: 03212223 sw s2,36(sp)
|
||||
29c: 03312023 sw s3,32(sp)
|
||||
2a0: 03010413 addi s0,sp,48
|
||||
2a4: fca42e23 sw a0,-36(s0)
|
||||
2a8: fdc42703 lw a4,-36(s0)
|
||||
2ac: 03200793 li a5,50
|
||||
2b0: 02f707b3 mul a5,a4,a5
|
||||
2b4: fef42623 sw a5,-20(s0)
|
||||
2b8: f55ff0ef jal ra,20c <get_cycle_value>
|
||||
2bc: fea42023 sw a0,-32(s0)
|
||||
2c0: feb42223 sw a1,-28(s0)
|
||||
2c4: 00000013 nop
|
||||
2c8: f45ff0ef jal ra,20c <get_cycle_value>
|
||||
2cc: 00058613 mv a2,a1
|
||||
2d0: 00050593 mv a1,a0
|
||||
2d4: fec42783 lw a5,-20(s0)
|
||||
2d8: 00078913 mv s2,a5
|
||||
2dc: 00000993 li s3,0
|
||||
2e0: fe042683 lw a3,-32(s0)
|
||||
2e4: fe442703 lw a4,-28(s0)
|
||||
2e8: 00d907b3 add a5,s2,a3
|
||||
2ec: 00078513 mv a0,a5
|
||||
2f0: 01253533 sltu a0,a0,s2
|
||||
2f4: 00e98833 add a6,s3,a4
|
||||
2f8: 01050733 add a4,a0,a6
|
||||
2fc: 00070813 mv a6,a4
|
||||
300: 00080693 mv a3,a6
|
||||
304: 00060713 mv a4,a2
|
||||
308: fcd760e3 bltu a4,a3,2c8 <busy_wait+0x3c>
|
||||
30c: 00080693 mv a3,a6
|
||||
310: 00060713 mv a4,a2
|
||||
314: 00e69863 bne a3,a4,324 <busy_wait+0x98>
|
||||
318: 00078713 mv a4,a5
|
||||
31c: 00058793 mv a5,a1
|
||||
320: fae7e4e3 bltu a5,a4,2c8 <busy_wait+0x3c>
|
||||
324: 00000013 nop
|
||||
328: 02c12083 lw ra,44(sp)
|
||||
32c: 02812403 lw s0,40(sp)
|
||||
330: 02412903 lw s2,36(sp)
|
||||
334: 02012983 lw s3,32(sp)
|
||||
338: 03010113 addi sp,sp,48
|
||||
33c: 00008067 ret
|
||||
|
||||
Disassembly of section .stack:
|
||||
|
||||
10000400 <_sp-0x400>:
|
||||
10001800 <_sp-0x800>:
|
||||
...
|
||||
|
||||
Disassembly of section .comment:
|
||||
|
|
@ -211,11 +242,11 @@ Disassembly of section .comment:
|
|||
4: 2820 fld fs0,80(s0)
|
||||
6: 20554e47 fmsub.s ft8,fa0,ft5,ft4,rmm
|
||||
a: 434d li t1,19
|
||||
c: 2055 jal b0 <_timer0_handler+0x48>
|
||||
c: 2055 jal b0 <trap_entry+0x48>
|
||||
e: 6345 lui t1,0x11
|
||||
10: 696c flw fa1,84(a0)
|
||||
12: 7370 flw fa2,100(a4)
|
||||
14: 2065 jal bc <_timer0_handler+0x54>
|
||||
14: 2065 jal bc <trap_entry+0x54>
|
||||
16: 4952 lw s2,20(sp)
|
||||
18: 562d4353 0x562d4353
|
||||
1c: 4520 lw s0,72(a0)
|
||||
|
|
|
|||
|
|
@ -4,30 +4,10 @@
|
|||
#include "../include/utils.h"
|
||||
|
||||
|
||||
#define MS(ms) (ms * 50000)
|
||||
|
||||
|
||||
|
||||
static void delay_ms(uint32_t ms)
|
||||
{
|
||||
uint64_t tmp;
|
||||
uint64_t cycle;
|
||||
|
||||
tmp = read_csr(cycle);
|
||||
tmp += (uint64_t)(read_csr(cycleh)) << 32;
|
||||
|
||||
do {
|
||||
cycle = read_csr(cycle);
|
||||
cycle += (uint64_t)(read_csr(cycleh)) << 32;
|
||||
} while (cycle < tmp + MS(ms));
|
||||
}
|
||||
|
||||
|
||||
|
||||
int main()
|
||||
{
|
||||
while (1) {
|
||||
GPIO_REG(GPIO_DATA) ^= 0x1;
|
||||
delay_ms(500);
|
||||
busy_wait(500 * 1000); // delay 500ms
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,9 +1,28 @@
|
|||
#ifndef _UTILS_H_
|
||||
#define _UTILS_H_
|
||||
|
||||
#define CPU_FREQ_HZ (50000000) // 50MHz
|
||||
#define CPU_FREQ_MHZ (50) // 50MHz
|
||||
|
||||
|
||||
#define read_csr(reg) ({ unsigned long __tmp; \
|
||||
asm volatile ("csrr %0, " #reg : "=r"(__tmp)); \
|
||||
__tmp; })
|
||||
|
||||
#define write_csr(reg, val) ({ \
|
||||
if (__builtin_constant_p(val) && (unsigned long)(val) < 32) \
|
||||
asm volatile ("csrw " #reg ", %0" :: "i"(val)); \
|
||||
else \
|
||||
asm volatile ("csrw " #reg ", %0" :: "r"(val)); })
|
||||
|
||||
|
||||
#ifdef SIMULATION
|
||||
#define set_test_pass() asm("li x27, 0x01")
|
||||
#define set_test_fail() asm("li x27, 0x00")
|
||||
#endif
|
||||
|
||||
|
||||
uint64_t get_cycle_value();
|
||||
void busy_wait(uint32_t us);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -0,0 +1,20 @@
|
|||
#include <stdint.h>
|
||||
|
||||
#include "include/utils.h"
|
||||
|
||||
|
||||
extern void trap_entry();
|
||||
|
||||
extern void timer0_irq_handler() __attribute__((weak));
|
||||
|
||||
|
||||
void trap_handler(uint32_t mcause)
|
||||
{
|
||||
// we have only timer0 interrupt here
|
||||
timer0_irq_handler();
|
||||
}
|
||||
|
||||
void _init()
|
||||
{
|
||||
write_csr(mtvec, &trap_entry);
|
||||
}
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
#include <stdint.h>
|
||||
|
||||
#include "../include/utils.h"
|
||||
|
||||
|
||||
|
||||
uint64_t get_cycle_value()
|
||||
{
|
||||
uint64_t cycle;
|
||||
|
||||
cycle = read_csr(cycle);
|
||||
cycle += (uint64_t)(read_csr(cycleh)) << 32;
|
||||
|
||||
return cycle;
|
||||
}
|
||||
|
||||
void busy_wait(uint32_t us)
|
||||
{
|
||||
uint64_t tmp;
|
||||
uint32_t count;
|
||||
|
||||
count = us * CPU_FREQ_MHZ;
|
||||
tmp = get_cycle_value();
|
||||
|
||||
while (get_cycle_value() < (tmp + count));
|
||||
}
|
||||
|
|
@ -11,7 +11,7 @@
|
|||
/
|
||||
/-------------------------------------------------------------------------*/
|
||||
|
||||
#include "xprintf.h"
|
||||
#include "../include/xprintf.h"
|
||||
|
||||
#include <stdarg.h>
|
||||
|
||||
|
|
@ -4,14 +4,14 @@ ENTRY(_start)
|
|||
|
||||
MEMORY
|
||||
{
|
||||
flash (wxa!ri) : ORIGIN = 0x00000000, LENGTH = 4K
|
||||
ram (wxa!ri) : ORIGIN = 0x10000000, LENGTH = 2K
|
||||
flash (wxa!ri) : ORIGIN = 0x00000000, LENGTH = 8K
|
||||
ram (wxa!ri) : ORIGIN = 0x10000000, LENGTH = 8K
|
||||
}
|
||||
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 1K;
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
|
||||
|
||||
.init :
|
||||
{
|
||||
|
|
|
|||
|
|
@ -1,25 +1,18 @@
|
|||
|
||||
RISCV_ARCH := rv32im
|
||||
RISCV_ABI := ilp32
|
||||
|
||||
RISCV_PATH := ../../../tools/gnu-mcu-eclipse-riscv-none-gcc-8.2.0-2.2-20190521-0004-win64/
|
||||
|
||||
CFLAGS += -march=$(RISCV_ARCH)
|
||||
CFLAGS += -mabi=$(RISCV_ABI)
|
||||
CFLAGS += -static -mcmodel=medany -fvisibility=hidden -nostdlib -nostartfiles
|
||||
|
||||
RISCV_GCC := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-gcc)
|
||||
RISCV_AS := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-as)
|
||||
RISCV_GXX := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-g++)
|
||||
RISCV_OBJDUMP := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-objdump)
|
||||
RISCV_GDB := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-gdb)
|
||||
RISCV_AR := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-ar)
|
||||
RISCV_OBJCOPY := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-objcopy)
|
||||
RISCV_READELF := $(abspath $(RISCV_PATH)/bin/riscv-none-embed-readelf)
|
||||
TARGET = simple
|
||||
|
||||
|
||||
.PHONY: all
|
||||
all:
|
||||
$(RISCV_GCC) $(CFLAGS) start.S main.c -Tlink.ld -o simple
|
||||
$(RISCV_OBJCOPY) -O binary simple simple.bin
|
||||
$(RISCV_OBJDUMP) --disassemble-all simple > simple.dump
|
||||
CFLAGS += -DSIMULATION
|
||||
#CFLAGS += -O2
|
||||
#ASM_SRCS +=
|
||||
#LDFLAGS +=
|
||||
#INCLUDES += -I.
|
||||
|
||||
C_SRCS := \
|
||||
main.c \
|
||||
|
||||
|
||||
include ../common.mk
|
||||
|
|
|
|||
|
|
@ -1,147 +0,0 @@
|
|||
OUTPUT_ARCH( "riscv" )
|
||||
ENTRY(_start)
|
||||
|
||||
|
||||
MEMORY
|
||||
{
|
||||
flash (wxa!ri) : ORIGIN = 0x00000000, LENGTH = 4K
|
||||
ram (wxa!ri) : ORIGIN = 0x10000000, LENGTH = 2K
|
||||
}
|
||||
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__stack_size = DEFINED(__stack_size) ? __stack_size : 1K;
|
||||
|
||||
.init :
|
||||
{
|
||||
KEEP (*(SORT_NONE(.init)))
|
||||
} >flash AT>flash
|
||||
|
||||
.text :
|
||||
{
|
||||
*(.text.unlikely .text.unlikely.*)
|
||||
*(.text.startup .text.startup.*)
|
||||
*(.text .text.*)
|
||||
*(.gnu.linkonce.t.*)
|
||||
} >flash AT>flash
|
||||
|
||||
. = ALIGN(4);
|
||||
|
||||
PROVIDE (__etext = .);
|
||||
PROVIDE (_etext = .);
|
||||
PROVIDE (etext = .);
|
||||
|
||||
.preinit_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__preinit_array_start = .);
|
||||
KEEP (*(.preinit_array))
|
||||
PROVIDE_HIDDEN (__preinit_array_end = .);
|
||||
} >flash AT>flash
|
||||
|
||||
.init_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__init_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
|
||||
KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
|
||||
PROVIDE_HIDDEN (__init_array_end = .);
|
||||
} >flash AT>flash
|
||||
|
||||
.fini_array :
|
||||
{
|
||||
PROVIDE_HIDDEN (__fini_array_start = .);
|
||||
KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
|
||||
KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
|
||||
PROVIDE_HIDDEN (__fini_array_end = .);
|
||||
} >flash AT>flash
|
||||
|
||||
.ctors :
|
||||
{
|
||||
/* gcc uses crtbegin.o to find the start of
|
||||
the constructors, so we make sure it is
|
||||
first. Because this is a wildcard, it
|
||||
doesn't matter if the user does not
|
||||
actually link against crtbegin.o; the
|
||||
linker won't look for a file to match a
|
||||
wildcard. The wildcard also means that it
|
||||
doesn't matter which directory crtbegin.o
|
||||
is in. */
|
||||
KEEP (*crtbegin.o(.ctors))
|
||||
KEEP (*crtbegin?.o(.ctors))
|
||||
/* We don't want to include the .ctor section from
|
||||
the crtend.o file until after the sorted ctors.
|
||||
The .ctor section from the crtend file contains the
|
||||
end of ctors marker and it must be last */
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
||||
KEEP (*(SORT(.ctors.*)))
|
||||
KEEP (*(.ctors))
|
||||
} >flash AT>flash
|
||||
|
||||
.dtors :
|
||||
{
|
||||
KEEP (*crtbegin.o(.dtors))
|
||||
KEEP (*crtbegin?.o(.dtors))
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
||||
KEEP (*(SORT(.dtors.*)))
|
||||
KEEP (*(.dtors))
|
||||
} >flash AT>flash
|
||||
|
||||
.lalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data_lma = . );
|
||||
} >flash AT>flash
|
||||
|
||||
.dalign :
|
||||
{
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _data = . );
|
||||
} >ram AT>flash
|
||||
|
||||
.data :
|
||||
{
|
||||
*(.rdata)
|
||||
*(.rodata .rodata.*)
|
||||
*(.gnu.linkonce.r.*)
|
||||
*(.data .data.*)
|
||||
*(.gnu.linkonce.d.*)
|
||||
. = ALIGN(8);
|
||||
PROVIDE( __global_pointer$ = . + 0x800 );
|
||||
*(.sdata .sdata.*)
|
||||
*(.gnu.linkonce.s.*)
|
||||
. = ALIGN(8);
|
||||
*(.srodata.cst16)
|
||||
*(.srodata.cst8)
|
||||
*(.srodata.cst4)
|
||||
*(.srodata.cst2)
|
||||
*(.srodata .srodata.*)
|
||||
} >ram AT>flash
|
||||
|
||||
. = ALIGN(4);
|
||||
PROVIDE( _edata = . );
|
||||
PROVIDE( edata = . );
|
||||
|
||||
PROVIDE( _fbss = . );
|
||||
PROVIDE( __bss_start = . );
|
||||
.bss :
|
||||
{
|
||||
*(.sbss*)
|
||||
*(.gnu.linkonce.sb.*)
|
||||
*(.bss .bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
} >ram AT>ram
|
||||
|
||||
. = ALIGN(8);
|
||||
PROVIDE( _end = . );
|
||||
PROVIDE( end = . );
|
||||
|
||||
.stack ORIGIN(ram) + LENGTH(ram) - __stack_size :
|
||||
{
|
||||
PROVIDE( _heap_end = . );
|
||||
. = __stack_size;
|
||||
PROVIDE( _sp = . );
|
||||
} >ram AT>ram
|
||||
|
||||
}
|
||||
|
|
@ -1,26 +1,17 @@
|
|||
|
||||
static void set_test_pass()
|
||||
{
|
||||
asm("li x27, 0x01");
|
||||
}
|
||||
|
||||
static void set_test_fail()
|
||||
{
|
||||
asm("li x27, 0x00");
|
||||
}
|
||||
#include <stdint.h>
|
||||
#include "../include/utils.h"
|
||||
|
||||
|
||||
int mul = 3;
|
||||
int div = 3;
|
||||
|
||||
|
||||
int main()
|
||||
{
|
||||
int i;
|
||||
int sum;
|
||||
|
||||
mul = 6;
|
||||
//div = 3;
|
||||
|
||||
sum = 0;
|
||||
|
||||
// sum = 5050
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
|
|
@ -5,117 +5,186 @@ simple: file format elf32-littleriscv
|
|||
Disassembly of section .init:
|
||||
|
||||
00000000 <_start>:
|
||||
0: 0040006f j 4 <_reset_handler>
|
||||
|
||||
00000004 <_reset_handler>:
|
||||
4: 10000197 auipc gp,0x10000
|
||||
8: 7fc18193 addi gp,gp,2044 # 10000800 <__global_pointer$>
|
||||
c: 00018113 mv sp,gp
|
||||
0: 10001197 auipc gp,0x10001
|
||||
4: 80018193 addi gp,gp,-2048 # 10000800 <__global_pointer$>
|
||||
8: 10002117 auipc sp,0x10002
|
||||
c: ff810113 addi sp,sp,-8 # 10002000 <_sp>
|
||||
10: 00000d13 li s10,0
|
||||
14: 00000d93 li s11,0
|
||||
18: 18c00513 li a0,396
|
||||
18: 2a000513 li a0,672
|
||||
1c: 10000597 auipc a1,0x10000
|
||||
20: fe458593 addi a1,a1,-28 # 10000000 <_data>
|
||||
24: 80818613 addi a2,gp,-2040 # 10000008 <__bss_start>
|
||||
28: 00c5fc63 bgeu a1,a2,40 <_reset_handler+0x3c>
|
||||
28: 00c5fc63 bgeu a1,a2,40 <_start+0x40>
|
||||
2c: 00052283 lw t0,0(a0)
|
||||
30: 0055a023 sw t0,0(a1)
|
||||
34: 00450513 addi a0,a0,4
|
||||
38: 00458593 addi a1,a1,4
|
||||
3c: fec5e8e3 bltu a1,a2,2c <_reset_handler+0x28>
|
||||
3c: fec5e8e3 bltu a1,a2,2c <_start+0x2c>
|
||||
40: 80818513 addi a0,gp,-2040 # 10000008 <__bss_start>
|
||||
44: 80818593 addi a1,gp,-2040 # 10000008 <__bss_start>
|
||||
48: 00b57863 bgeu a0,a1,58 <_reset_handler+0x54>
|
||||
48: 00b57863 bgeu a0,a1,58 <_start+0x58>
|
||||
4c: 00052023 sw zero,0(a0)
|
||||
50: 00450513 addi a0,a0,4
|
||||
54: feb56ce3 bltu a0,a1,4c <_reset_handler+0x48>
|
||||
58: 04c000ef jal ra,a4 <main>
|
||||
5c: 00100d13 li s10,1
|
||||
54: feb56ce3 bltu a0,a1,4c <_start+0x4c>
|
||||
58: 220000ef jal ra,278 <_init>
|
||||
5c: 10c000ef jal ra,168 <main>
|
||||
60: 00100d13 li s10,1
|
||||
|
||||
00000060 <loop>:
|
||||
60: 0000006f j 60 <loop>
|
||||
00000064 <loop>:
|
||||
64: 0000006f j 64 <loop>
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
00000064 <set_test_pass>:
|
||||
64: ff010113 addi sp,sp,-16
|
||||
68: 00812623 sw s0,12(sp)
|
||||
6c: 01010413 addi s0,sp,16
|
||||
70: 00100d93 li s11,1
|
||||
74: 00000013 nop
|
||||
78: 00c12403 lw s0,12(sp)
|
||||
7c: 01010113 addi sp,sp,16
|
||||
80: 00008067 ret
|
||||
00000068 <trap_entry>:
|
||||
68: f8010113 addi sp,sp,-128
|
||||
6c: 00112223 sw ra,4(sp)
|
||||
70: 00212423 sw sp,8(sp)
|
||||
74: 00312623 sw gp,12(sp)
|
||||
78: 00412823 sw tp,16(sp)
|
||||
7c: 00512a23 sw t0,20(sp)
|
||||
80: 00612c23 sw t1,24(sp)
|
||||
84: 00712e23 sw t2,28(sp)
|
||||
88: 02812023 sw s0,32(sp)
|
||||
8c: 02912223 sw s1,36(sp)
|
||||
90: 02a12423 sw a0,40(sp)
|
||||
94: 02b12623 sw a1,44(sp)
|
||||
98: 02c12823 sw a2,48(sp)
|
||||
9c: 02d12a23 sw a3,52(sp)
|
||||
a0: 02e12c23 sw a4,56(sp)
|
||||
a4: 02f12e23 sw a5,60(sp)
|
||||
a8: 05012023 sw a6,64(sp)
|
||||
ac: 05112223 sw a7,68(sp)
|
||||
b0: 05212423 sw s2,72(sp)
|
||||
b4: 05312623 sw s3,76(sp)
|
||||
b8: 05412823 sw s4,80(sp)
|
||||
bc: 05512a23 sw s5,84(sp)
|
||||
c0: 05612c23 sw s6,88(sp)
|
||||
c4: 05712e23 sw s7,92(sp)
|
||||
c8: 07812023 sw s8,96(sp)
|
||||
cc: 07912223 sw s9,100(sp)
|
||||
d0: 07c12823 sw t3,112(sp)
|
||||
d4: 07d12a23 sw t4,116(sp)
|
||||
d8: 07e12c23 sw t5,120(sp)
|
||||
dc: 07f12e23 sw t6,124(sp)
|
||||
e0: 34202573 csrr a0,mcause
|
||||
e4: 164000ef jal ra,248 <trap_handler>
|
||||
e8: 00412083 lw ra,4(sp)
|
||||
ec: 00812103 lw sp,8(sp)
|
||||
f0: 00c12183 lw gp,12(sp)
|
||||
f4: 01012203 lw tp,16(sp)
|
||||
f8: 01412283 lw t0,20(sp)
|
||||
fc: 01812303 lw t1,24(sp)
|
||||
100: 01c12383 lw t2,28(sp)
|
||||
104: 02012403 lw s0,32(sp)
|
||||
108: 02412483 lw s1,36(sp)
|
||||
10c: 02812503 lw a0,40(sp)
|
||||
110: 02c12583 lw a1,44(sp)
|
||||
114: 03012603 lw a2,48(sp)
|
||||
118: 03412683 lw a3,52(sp)
|
||||
11c: 03812703 lw a4,56(sp)
|
||||
120: 03c12783 lw a5,60(sp)
|
||||
124: 04012803 lw a6,64(sp)
|
||||
128: 04412883 lw a7,68(sp)
|
||||
12c: 04812903 lw s2,72(sp)
|
||||
130: 04c12983 lw s3,76(sp)
|
||||
134: 05012a03 lw s4,80(sp)
|
||||
138: 05412a83 lw s5,84(sp)
|
||||
13c: 05812b03 lw s6,88(sp)
|
||||
140: 05c12b83 lw s7,92(sp)
|
||||
144: 06012c03 lw s8,96(sp)
|
||||
148: 06412c83 lw s9,100(sp)
|
||||
14c: 07012e03 lw t3,112(sp)
|
||||
150: 07412e83 lw t4,116(sp)
|
||||
154: 07812f03 lw t5,120(sp)
|
||||
158: 07c12f83 lw t6,124(sp)
|
||||
15c: 08010113 addi sp,sp,128
|
||||
160: 30200073 mret
|
||||
164: 0000006f j 164 <trap_entry+0xfc>
|
||||
|
||||
00000084 <set_test_fail>:
|
||||
84: ff010113 addi sp,sp,-16
|
||||
88: 00812623 sw s0,12(sp)
|
||||
8c: 01010413 addi s0,sp,16
|
||||
90: 00000d93 li s11,0
|
||||
94: 00000013 nop
|
||||
98: 00c12403 lw s0,12(sp)
|
||||
9c: 01010113 addi sp,sp,16
|
||||
a0: 00008067 ret
|
||||
00000168 <main>:
|
||||
168: fe010113 addi sp,sp,-32
|
||||
16c: 00812e23 sw s0,28(sp)
|
||||
170: 02010413 addi s0,sp,32
|
||||
174: 10000797 auipc a5,0x10000
|
||||
178: e8c78793 addi a5,a5,-372 # 10000000 <_data>
|
||||
17c: 00600713 li a4,6
|
||||
180: 00e7a023 sw a4,0(a5)
|
||||
184: fe042423 sw zero,-24(s0)
|
||||
188: fe042623 sw zero,-20(s0)
|
||||
18c: 0200006f j 1ac <main+0x44>
|
||||
190: fe842703 lw a4,-24(s0)
|
||||
194: fec42783 lw a5,-20(s0)
|
||||
198: 00f707b3 add a5,a4,a5
|
||||
19c: fef42423 sw a5,-24(s0)
|
||||
1a0: fec42783 lw a5,-20(s0)
|
||||
1a4: 00178793 addi a5,a5,1
|
||||
1a8: fef42623 sw a5,-20(s0)
|
||||
1ac: fec42703 lw a4,-20(s0)
|
||||
1b0: 06400793 li a5,100
|
||||
1b4: fce7dee3 bge a5,a4,190 <main+0x28>
|
||||
1b8: fe042623 sw zero,-20(s0)
|
||||
1bc: 0200006f j 1dc <main+0x74>
|
||||
1c0: fe842703 lw a4,-24(s0)
|
||||
1c4: fec42783 lw a5,-20(s0)
|
||||
1c8: 40f707b3 sub a5,a4,a5
|
||||
1cc: fef42423 sw a5,-24(s0)
|
||||
1d0: fec42783 lw a5,-20(s0)
|
||||
1d4: 00178793 addi a5,a5,1
|
||||
1d8: fef42623 sw a5,-20(s0)
|
||||
1dc: fec42703 lw a4,-20(s0)
|
||||
1e0: 03200793 li a5,50
|
||||
1e4: fce7dee3 bge a5,a4,1c0 <main+0x58>
|
||||
1e8: 10000797 auipc a5,0x10000
|
||||
1ec: e1878793 addi a5,a5,-488 # 10000000 <_data>
|
||||
1f0: 0007a783 lw a5,0(a5)
|
||||
1f4: fe842703 lw a4,-24(s0)
|
||||
1f8: 02f707b3 mul a5,a4,a5
|
||||
1fc: fef42423 sw a5,-24(s0)
|
||||
200: 10000797 auipc a5,0x10000
|
||||
204: e0478793 addi a5,a5,-508 # 10000004 <div>
|
||||
208: 0007a783 lw a5,0(a5)
|
||||
20c: fe842703 lw a4,-24(s0)
|
||||
210: 02f747b3 div a5,a4,a5
|
||||
214: fef42423 sw a5,-24(s0)
|
||||
218: fe842703 lw a4,-24(s0)
|
||||
21c: 000027b7 lui a5,0x2
|
||||
220: d7e78793 addi a5,a5,-642 # 1d7e <__stack_size+0x157e>
|
||||
224: 00f71663 bne a4,a5,230 <main+0xc8>
|
||||
228: 00100d93 li s11,1
|
||||
22c: 0080006f j 234 <main+0xcc>
|
||||
230: 00000d93 li s11,0
|
||||
234: 00000793 li a5,0
|
||||
238: 00078513 mv a0,a5
|
||||
23c: 01c12403 lw s0,28(sp)
|
||||
240: 02010113 addi sp,sp,32
|
||||
244: 00008067 ret
|
||||
|
||||
000000a4 <main>:
|
||||
a4: fe010113 addi sp,sp,-32
|
||||
a8: 00112e23 sw ra,28(sp)
|
||||
ac: 00812c23 sw s0,24(sp)
|
||||
b0: 02010413 addi s0,sp,32
|
||||
b4: 10000797 auipc a5,0x10000
|
||||
b8: f4c78793 addi a5,a5,-180 # 10000000 <_data>
|
||||
bc: 00600713 li a4,6
|
||||
c0: 00e7a023 sw a4,0(a5)
|
||||
c4: fe042423 sw zero,-24(s0)
|
||||
c8: fe042623 sw zero,-20(s0)
|
||||
cc: 0200006f j ec <main+0x48>
|
||||
d0: fe842703 lw a4,-24(s0)
|
||||
d4: fec42783 lw a5,-20(s0)
|
||||
d8: 00f707b3 add a5,a4,a5
|
||||
dc: fef42423 sw a5,-24(s0)
|
||||
e0: fec42783 lw a5,-20(s0)
|
||||
e4: 00178793 addi a5,a5,1
|
||||
e8: fef42623 sw a5,-20(s0)
|
||||
ec: fec42703 lw a4,-20(s0)
|
||||
f0: 06400793 li a5,100
|
||||
f4: fce7dee3 bge a5,a4,d0 <main+0x2c>
|
||||
f8: fe042623 sw zero,-20(s0)
|
||||
fc: 0200006f j 11c <main+0x78>
|
||||
100: fe842703 lw a4,-24(s0)
|
||||
104: fec42783 lw a5,-20(s0)
|
||||
108: 40f707b3 sub a5,a4,a5
|
||||
10c: fef42423 sw a5,-24(s0)
|
||||
110: fec42783 lw a5,-20(s0)
|
||||
114: 00178793 addi a5,a5,1
|
||||
118: fef42623 sw a5,-20(s0)
|
||||
11c: fec42703 lw a4,-20(s0)
|
||||
120: 03200793 li a5,50
|
||||
124: fce7dee3 bge a5,a4,100 <main+0x5c>
|
||||
128: 10000797 auipc a5,0x10000
|
||||
12c: ed878793 addi a5,a5,-296 # 10000000 <_data>
|
||||
130: 0007a783 lw a5,0(a5)
|
||||
134: fe842703 lw a4,-24(s0)
|
||||
138: 02f707b3 mul a5,a4,a5
|
||||
13c: fef42423 sw a5,-24(s0)
|
||||
140: 10000797 auipc a5,0x10000
|
||||
144: ec478793 addi a5,a5,-316 # 10000004 <div>
|
||||
148: 0007a783 lw a5,0(a5)
|
||||
14c: fe842703 lw a4,-24(s0)
|
||||
150: 02f747b3 div a5,a4,a5
|
||||
154: fef42423 sw a5,-24(s0)
|
||||
158: fe842703 lw a4,-24(s0)
|
||||
15c: 000027b7 lui a5,0x2
|
||||
160: d7e78793 addi a5,a5,-642 # 1d7e <__stack_size+0x197e>
|
||||
164: 00f71663 bne a4,a5,170 <main+0xcc>
|
||||
168: efdff0ef jal ra,64 <set_test_pass>
|
||||
16c: 0080006f j 174 <main+0xd0>
|
||||
170: f15ff0ef jal ra,84 <set_test_fail>
|
||||
174: 00000793 li a5,0
|
||||
178: 00078513 mv a0,a5
|
||||
17c: 01c12083 lw ra,28(sp)
|
||||
180: 01812403 lw s0,24(sp)
|
||||
184: 02010113 addi sp,sp,32
|
||||
188: 00008067 ret
|
||||
00000248 <trap_handler>:
|
||||
248: fe010113 addi sp,sp,-32
|
||||
24c: 00112e23 sw ra,28(sp)
|
||||
250: 00812c23 sw s0,24(sp)
|
||||
254: 02010413 addi s0,sp,32
|
||||
258: fea42623 sw a0,-20(s0)
|
||||
25c: 00000097 auipc ra,0x0
|
||||
260: 000000e7 jalr zero # 0 <_start>
|
||||
264: 00000013 nop
|
||||
268: 01c12083 lw ra,28(sp)
|
||||
26c: 01812403 lw s0,24(sp)
|
||||
270: 02010113 addi sp,sp,32
|
||||
274: 00008067 ret
|
||||
|
||||
00000278 <_init>:
|
||||
278: ff010113 addi sp,sp,-16
|
||||
27c: 00812623 sw s0,12(sp)
|
||||
280: 01010413 addi s0,sp,16
|
||||
284: 00000797 auipc a5,0x0
|
||||
288: de478793 addi a5,a5,-540 # 68 <trap_entry>
|
||||
28c: 30579073 csrw mtvec,a5
|
||||
290: 00000013 nop
|
||||
294: 00c12403 lw s0,12(sp)
|
||||
298: 01010113 addi sp,sp,16
|
||||
29c: 00008067 ret
|
||||
|
||||
Disassembly of section .data:
|
||||
|
||||
|
|
@ -127,7 +196,7 @@ Disassembly of section .data:
|
|||
|
||||
Disassembly of section .stack:
|
||||
|
||||
10000400 <_sp-0x400>:
|
||||
10001800 <_sp-0x800>:
|
||||
...
|
||||
|
||||
Disassembly of section .comment:
|
||||
|
|
@ -137,11 +206,11 @@ Disassembly of section .comment:
|
|||
4: 2820 fld fs0,80(s0)
|
||||
6: 20554e47 fmsub.s ft8,fa0,ft5,ft4,rmm
|
||||
a: 434d li t1,19
|
||||
c: 2055 jal b0 <main+0xc>
|
||||
c: 2055 jal b0 <trap_entry+0x48>
|
||||
e: 6345 lui t1,0x11
|
||||
10: 696c flw fa1,84(a0)
|
||||
12: 7370 flw fa2,100(a4)
|
||||
14: 2065 jal bc <main+0x18>
|
||||
14: 2065 jal bc <trap_entry+0x54>
|
||||
16: 4952 lw s2,20(sp)
|
||||
18: 562d4353 0x562d4353
|
||||
1c: 4520 lw s0,72(a0)
|
||||
|
|
|
|||
|
|
@ -1,46 +0,0 @@
|
|||
.section .init;
|
||||
.globl _start;
|
||||
.type _start,@function
|
||||
|
||||
|
||||
_start:
|
||||
j _reset_handler
|
||||
|
||||
_reset_handler:
|
||||
.option push
|
||||
.option norelax
|
||||
la gp, __global_pointer$
|
||||
.option pop
|
||||
la sp, _sp
|
||||
li x26, 0x00
|
||||
li x27, 0x00
|
||||
|
||||
/* Load data section */
|
||||
la a0, _data_lma
|
||||
la a1, _data
|
||||
la a2, _edata
|
||||
bgeu a1, a2, 2f
|
||||
1:
|
||||
lw t0, (a0)
|
||||
sw t0, (a1)
|
||||
addi a0, a0, 4
|
||||
addi a1, a1, 4
|
||||
bltu a1, a2, 1b
|
||||
2:
|
||||
|
||||
/* Clear bss section */
|
||||
la a0, __bss_start
|
||||
la a1, _end
|
||||
bgeu a0, a1, 2f
|
||||
1:
|
||||
sw zero, (a0)
|
||||
addi a0, a0, 4
|
||||
bltu a0, a1, 1b
|
||||
2:
|
||||
|
||||
call main
|
||||
|
||||
li x26, 0x01
|
||||
|
||||
loop:
|
||||
j loop
|
||||
|
|
@ -1,23 +1,19 @@
|
|||
#define REGBYTES 4
|
||||
#define STORE sw
|
||||
#define LOAD lw
|
||||
|
||||
.section .init;
|
||||
.globl _start;
|
||||
.type _start,@function
|
||||
|
||||
.weak TIMER0_IRQHandler
|
||||
|
||||
_start:
|
||||
j _reset_handler
|
||||
j _timer0_handler
|
||||
|
||||
_reset_handler:
|
||||
.option push
|
||||
.option norelax
|
||||
la gp, __global_pointer$
|
||||
.option pop
|
||||
la sp, _sp
|
||||
#ifdef SIMULATION
|
||||
li x26, 0x00
|
||||
li x27, 0x00
|
||||
#endif
|
||||
|
||||
/* Load data section */
|
||||
la a0, _data_lma
|
||||
|
|
@ -42,80 +38,12 @@ _reset_handler:
|
|||
bltu a0, a1, 1b
|
||||
2:
|
||||
|
||||
call _init
|
||||
call main
|
||||
|
||||
#ifdef SIMULATION
|
||||
li x26, 0x01
|
||||
#endif
|
||||
|
||||
loop:
|
||||
j loop
|
||||
|
||||
_timer0_handler:
|
||||
addi sp, sp, -32*REGBYTES
|
||||
|
||||
STORE x1, 1*REGBYTES(sp)
|
||||
STORE x2, 2*REGBYTES(sp)
|
||||
STORE x3, 3*REGBYTES(sp)
|
||||
STORE x4, 4*REGBYTES(sp)
|
||||
STORE x5, 5*REGBYTES(sp)
|
||||
STORE x6, 6*REGBYTES(sp)
|
||||
STORE x7, 7*REGBYTES(sp)
|
||||
STORE x8, 8*REGBYTES(sp)
|
||||
STORE x9, 9*REGBYTES(sp)
|
||||
STORE x10, 10*REGBYTES(sp)
|
||||
STORE x11, 11*REGBYTES(sp)
|
||||
STORE x12, 12*REGBYTES(sp)
|
||||
STORE x13, 13*REGBYTES(sp)
|
||||
STORE x14, 14*REGBYTES(sp)
|
||||
STORE x15, 15*REGBYTES(sp)
|
||||
STORE x16, 16*REGBYTES(sp)
|
||||
STORE x17, 17*REGBYTES(sp)
|
||||
STORE x18, 18*REGBYTES(sp)
|
||||
STORE x19, 19*REGBYTES(sp)
|
||||
STORE x20, 20*REGBYTES(sp)
|
||||
STORE x21, 21*REGBYTES(sp)
|
||||
STORE x22, 22*REGBYTES(sp)
|
||||
STORE x23, 23*REGBYTES(sp)
|
||||
STORE x24, 24*REGBYTES(sp)
|
||||
STORE x25, 25*REGBYTES(sp)
|
||||
STORE x26, 26*REGBYTES(sp)
|
||||
STORE x27, 27*REGBYTES(sp)
|
||||
STORE x28, 28*REGBYTES(sp)
|
||||
STORE x29, 29*REGBYTES(sp)
|
||||
STORE x30, 30*REGBYTES(sp)
|
||||
STORE x31, 31*REGBYTES(sp)
|
||||
|
||||
call TIMER0_IRQHandler
|
||||
|
||||
LOAD x1, 1*REGBYTES(sp)
|
||||
LOAD x2, 2*REGBYTES(sp)
|
||||
LOAD x3, 3*REGBYTES(sp)
|
||||
LOAD x4, 4*REGBYTES(sp)
|
||||
LOAD x5, 5*REGBYTES(sp)
|
||||
LOAD x6, 6*REGBYTES(sp)
|
||||
LOAD x7, 7*REGBYTES(sp)
|
||||
LOAD x8, 8*REGBYTES(sp)
|
||||
LOAD x9, 9*REGBYTES(sp)
|
||||
LOAD x10, 10*REGBYTES(sp)
|
||||
LOAD x11, 11*REGBYTES(sp)
|
||||
LOAD x12, 12*REGBYTES(sp)
|
||||
LOAD x13, 13*REGBYTES(sp)
|
||||
LOAD x14, 14*REGBYTES(sp)
|
||||
LOAD x15, 15*REGBYTES(sp)
|
||||
LOAD x16, 16*REGBYTES(sp)
|
||||
LOAD x17, 17*REGBYTES(sp)
|
||||
LOAD x18, 18*REGBYTES(sp)
|
||||
LOAD x19, 19*REGBYTES(sp)
|
||||
LOAD x20, 20*REGBYTES(sp)
|
||||
LOAD x21, 21*REGBYTES(sp)
|
||||
LOAD x22, 22*REGBYTES(sp)
|
||||
LOAD x23, 23*REGBYTES(sp)
|
||||
LOAD x24, 24*REGBYTES(sp)
|
||||
LOAD x25, 25*REGBYTES(sp)
|
||||
LOAD x26, 26*REGBYTES(sp)
|
||||
LOAD x27, 27*REGBYTES(sp)
|
||||
LOAD x28, 28*REGBYTES(sp)
|
||||
LOAD x29, 29*REGBYTES(sp)
|
||||
LOAD x30, 30*REGBYTES(sp)
|
||||
LOAD x31, 31*REGBYTES(sp)
|
||||
|
||||
addi sp, sp, 32*REGBYTES
|
||||
|
||||
mret
|
||||
|
|
|
|||
|
|
@ -1,9 +1,18 @@
|
|||
RISCV_ARCH := rv32im
|
||||
RISCV_ABI := ilp32
|
||||
|
||||
|
||||
TARGET = timer_int
|
||||
|
||||
|
||||
CFLAGS += -DSIMULATION
|
||||
#CFLAGS += -O2
|
||||
#ASM_SRCS +=
|
||||
#LDFLAGS +=
|
||||
#INCLUDES += -I.
|
||||
|
||||
C_SRCS := \
|
||||
main.c \
|
||||
|
||||
|
||||
include ../common.mk
|
||||
|
||||
|
||||
.PHONY: all
|
||||
all:
|
||||
$(RISCV_GCC) $(CFLAGS) ../start.S main.c -T ../link.lds -o timer_int
|
||||
$(RISCV_OBJCOPY) -O binary timer_int timer_int.bin
|
||||
$(RISCV_OBJDUMP) --disassemble-all timer_int > timer_int.dump
|
||||
|
|
|
|||
|
|
@ -2,33 +2,62 @@
|
|||
|
||||
#include "../include/timer.h"
|
||||
#include "../include/gpio.h"
|
||||
#include "../include/utils.h"
|
||||
|
||||
|
||||
static uint32_t count;
|
||||
static volatile uint32_t count;
|
||||
static volatile uint8_t int_flag;
|
||||
|
||||
|
||||
int main()
|
||||
{
|
||||
count = 0;
|
||||
int_flag = 0;
|
||||
|
||||
TIMER0_REG(TIMER0_VALUE) = 50000; // 1ms period
|
||||
#ifdef SIMULATION
|
||||
TIMER0_REG(TIMER0_VALUE) = 500; // 10us period
|
||||
TIMER0_REG(TIMER0_CTRL) = 0x07; // enable interrupt and start timer
|
||||
|
||||
while (1) {
|
||||
if (int_flag) {
|
||||
TIMER0_REG(TIMER0_CTRL) |= (1 << 0); // restart timer
|
||||
int_flag = 0;
|
||||
count++;
|
||||
if (count == 2) {
|
||||
TIMER0_REG(TIMER0_CTRL) = 0x00; // stop timer
|
||||
count = 0;
|
||||
// TODO: do something
|
||||
set_test_pass();
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
#else
|
||||
TIMER0_REG(TIMER0_VALUE) = 500000; // 10ms period
|
||||
TIMER0_REG(TIMER0_CTRL) = 0x07; // enable interrupt and start timer
|
||||
|
||||
GPIO_REG(GPIO_DATA) = 0x1;
|
||||
|
||||
while (1) {
|
||||
if (count >= 500) {
|
||||
count = 0;
|
||||
GPIO_REG(GPIO_DATA) ^= 0x1;
|
||||
if (int_flag) {
|
||||
TIMER0_REG(TIMER0_CTRL) |= (1 << 0); // restart timer
|
||||
int_flag = 0;
|
||||
count++;
|
||||
// 500ms
|
||||
if (count == 50) {
|
||||
count = 0;
|
||||
GPIO_REG(GPIO_DATA) ^= 0x1; // toggle led
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void TIMER0_IRQHandler()
|
||||
void timer0_irq_handler()
|
||||
{
|
||||
TIMER0_REG(TIMER0_CTRL) = 0x07; // clear int pending
|
||||
TIMER0_REG(TIMER0_CTRL) |= (1 << 2); // clear int pending
|
||||
|
||||
count++;
|
||||
int_flag = 1;
|
||||
}
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
|
|
@ -5,173 +5,216 @@ timer_int: file format elf32-littleriscv
|
|||
Disassembly of section .init:
|
||||
|
||||
00000000 <_start>:
|
||||
0: 0080006f j 8 <_reset_handler>
|
||||
4: 0600006f j 64 <_timer0_handler>
|
||||
0: 10001197 auipc gp,0x10001
|
||||
4: 80018193 addi gp,gp,-2048 # 10000800 <__global_pointer$>
|
||||
8: 10002117 auipc sp,0x10002
|
||||
c: ff810113 addi sp,sp,-8 # 10002000 <_sp>
|
||||
10: 00000d13 li s10,0
|
||||
14: 00000d93 li s11,0
|
||||
18: 2d800513 li a0,728
|
||||
1c: 10000597 auipc a1,0x10000
|
||||
20: fe458593 addi a1,a1,-28 # 10000000 <_data>
|
||||
24: 10000617 auipc a2,0x10000
|
||||
28: fdc60613 addi a2,a2,-36 # 10000000 <_data>
|
||||
2c: 00c5fc63 bgeu a1,a2,44 <_start+0x44>
|
||||
30: 00052283 lw t0,0(a0)
|
||||
34: 0055a023 sw t0,0(a1)
|
||||
38: 00450513 addi a0,a0,4
|
||||
3c: 00458593 addi a1,a1,4
|
||||
40: fec5e8e3 bltu a1,a2,30 <_start+0x30>
|
||||
44: 10000517 auipc a0,0x10000
|
||||
48: fbc50513 addi a0,a0,-68 # 10000000 <_data>
|
||||
4c: 80818593 addi a1,gp,-2040 # 10000008 <_end>
|
||||
50: 00b57863 bgeu a0,a1,60 <_start+0x60>
|
||||
54: 00052023 sw zero,0(a0)
|
||||
58: 00450513 addi a0,a0,4
|
||||
5c: feb56ce3 bltu a0,a1,54 <_start+0x54>
|
||||
60: 250000ef jal ra,2b0 <_init>
|
||||
64: 10c000ef jal ra,170 <main>
|
||||
68: 00100d13 li s10,1
|
||||
|
||||
00000008 <_reset_handler>:
|
||||
8: 10000197 auipc gp,0x10000
|
||||
c: 7f818193 addi gp,gp,2040 # 10000800 <__global_pointer$>
|
||||
10: 00018113 mv sp,gp
|
||||
14: 24400513 li a0,580
|
||||
18: 10000597 auipc a1,0x10000
|
||||
1c: fe858593 addi a1,a1,-24 # 10000000 <_data>
|
||||
20: 10000617 auipc a2,0x10000
|
||||
24: fe060613 addi a2,a2,-32 # 10000000 <_data>
|
||||
28: 00c5fc63 bgeu a1,a2,40 <_reset_handler+0x38>
|
||||
2c: 00052283 lw t0,0(a0)
|
||||
30: 0055a023 sw t0,0(a1)
|
||||
34: 00450513 addi a0,a0,4
|
||||
38: 00458593 addi a1,a1,4
|
||||
3c: fec5e8e3 bltu a1,a2,2c <_reset_handler+0x24>
|
||||
40: 10000517 auipc a0,0x10000
|
||||
44: fc050513 addi a0,a0,-64 # 10000000 <_data>
|
||||
48: 80818593 addi a1,gp,-2040 # 10000008 <_end>
|
||||
4c: 00b57863 bgeu a0,a1,5c <_reset_handler+0x54>
|
||||
50: 00052023 sw zero,0(a0)
|
||||
54: 00450513 addi a0,a0,4
|
||||
58: feb56ce3 bltu a0,a1,50 <_reset_handler+0x48>
|
||||
5c: 110000ef jal ra,16c <main>
|
||||
0000006c <loop>:
|
||||
6c: 0000006f j 6c <loop>
|
||||
|
||||
00000060 <loop>:
|
||||
60: 0000006f j 60 <loop>
|
||||
Disassembly of section .text:
|
||||
|
||||
00000064 <_timer0_handler>:
|
||||
64: f8010113 addi sp,sp,-128
|
||||
68: 00112223 sw ra,4(sp)
|
||||
6c: 00212423 sw sp,8(sp)
|
||||
70: 00312623 sw gp,12(sp)
|
||||
74: 00412823 sw tp,16(sp)
|
||||
78: 00512a23 sw t0,20(sp)
|
||||
7c: 00612c23 sw t1,24(sp)
|
||||
80: 00712e23 sw t2,28(sp)
|
||||
84: 02812023 sw s0,32(sp)
|
||||
88: 02912223 sw s1,36(sp)
|
||||
8c: 02a12423 sw a0,40(sp)
|
||||
90: 02b12623 sw a1,44(sp)
|
||||
94: 02c12823 sw a2,48(sp)
|
||||
98: 02d12a23 sw a3,52(sp)
|
||||
9c: 02e12c23 sw a4,56(sp)
|
||||
a0: 02f12e23 sw a5,60(sp)
|
||||
a4: 05012023 sw a6,64(sp)
|
||||
a8: 05112223 sw a7,68(sp)
|
||||
ac: 05212423 sw s2,72(sp)
|
||||
b0: 05312623 sw s3,76(sp)
|
||||
b4: 05412823 sw s4,80(sp)
|
||||
b8: 05512a23 sw s5,84(sp)
|
||||
bc: 05612c23 sw s6,88(sp)
|
||||
c0: 05712e23 sw s7,92(sp)
|
||||
c4: 07812023 sw s8,96(sp)
|
||||
c8: 07912223 sw s9,100(sp)
|
||||
cc: 07a12423 sw s10,104(sp)
|
||||
d0: 07b12623 sw s11,108(sp)
|
||||
d4: 07c12823 sw t3,112(sp)
|
||||
d8: 07d12a23 sw t4,116(sp)
|
||||
dc: 07e12c23 sw t5,120(sp)
|
||||
e0: 07f12e23 sw t6,124(sp)
|
||||
e4: 110000ef jal ra,1f4 <TIMER0_IRQHandler>
|
||||
e8: 00412083 lw ra,4(sp)
|
||||
ec: 00812103 lw sp,8(sp)
|
||||
f0: 00c12183 lw gp,12(sp)
|
||||
f4: 01012203 lw tp,16(sp)
|
||||
f8: 01412283 lw t0,20(sp)
|
||||
fc: 01812303 lw t1,24(sp)
|
||||
100: 01c12383 lw t2,28(sp)
|
||||
104: 02012403 lw s0,32(sp)
|
||||
108: 02412483 lw s1,36(sp)
|
||||
10c: 02812503 lw a0,40(sp)
|
||||
110: 02c12583 lw a1,44(sp)
|
||||
114: 03012603 lw a2,48(sp)
|
||||
118: 03412683 lw a3,52(sp)
|
||||
11c: 03812703 lw a4,56(sp)
|
||||
120: 03c12783 lw a5,60(sp)
|
||||
124: 04012803 lw a6,64(sp)
|
||||
128: 04412883 lw a7,68(sp)
|
||||
12c: 04812903 lw s2,72(sp)
|
||||
130: 04c12983 lw s3,76(sp)
|
||||
134: 05012a03 lw s4,80(sp)
|
||||
138: 05412a83 lw s5,84(sp)
|
||||
13c: 05812b03 lw s6,88(sp)
|
||||
140: 05c12b83 lw s7,92(sp)
|
||||
144: 06012c03 lw s8,96(sp)
|
||||
148: 06412c83 lw s9,100(sp)
|
||||
14c: 06812d03 lw s10,104(sp)
|
||||
150: 06c12d83 lw s11,108(sp)
|
||||
00000070 <trap_entry>:
|
||||
70: f8010113 addi sp,sp,-128
|
||||
74: 00112223 sw ra,4(sp)
|
||||
78: 00212423 sw sp,8(sp)
|
||||
7c: 00312623 sw gp,12(sp)
|
||||
80: 00412823 sw tp,16(sp)
|
||||
84: 00512a23 sw t0,20(sp)
|
||||
88: 00612c23 sw t1,24(sp)
|
||||
8c: 00712e23 sw t2,28(sp)
|
||||
90: 02812023 sw s0,32(sp)
|
||||
94: 02912223 sw s1,36(sp)
|
||||
98: 02a12423 sw a0,40(sp)
|
||||
9c: 02b12623 sw a1,44(sp)
|
||||
a0: 02c12823 sw a2,48(sp)
|
||||
a4: 02d12a23 sw a3,52(sp)
|
||||
a8: 02e12c23 sw a4,56(sp)
|
||||
ac: 02f12e23 sw a5,60(sp)
|
||||
b0: 05012023 sw a6,64(sp)
|
||||
b4: 05112223 sw a7,68(sp)
|
||||
b8: 05212423 sw s2,72(sp)
|
||||
bc: 05312623 sw s3,76(sp)
|
||||
c0: 05412823 sw s4,80(sp)
|
||||
c4: 05512a23 sw s5,84(sp)
|
||||
c8: 05612c23 sw s6,88(sp)
|
||||
cc: 05712e23 sw s7,92(sp)
|
||||
d0: 07812023 sw s8,96(sp)
|
||||
d4: 07912223 sw s9,100(sp)
|
||||
d8: 07c12823 sw t3,112(sp)
|
||||
dc: 07d12a23 sw t4,116(sp)
|
||||
e0: 07e12c23 sw t5,120(sp)
|
||||
e4: 07f12e23 sw t6,124(sp)
|
||||
e8: 34202573 csrr a0,mcause
|
||||
ec: 198000ef jal ra,284 <trap_handler>
|
||||
f0: 00412083 lw ra,4(sp)
|
||||
f4: 00812103 lw sp,8(sp)
|
||||
f8: 00c12183 lw gp,12(sp)
|
||||
fc: 01012203 lw tp,16(sp)
|
||||
100: 01412283 lw t0,20(sp)
|
||||
104: 01812303 lw t1,24(sp)
|
||||
108: 01c12383 lw t2,28(sp)
|
||||
10c: 02012403 lw s0,32(sp)
|
||||
110: 02412483 lw s1,36(sp)
|
||||
114: 02812503 lw a0,40(sp)
|
||||
118: 02c12583 lw a1,44(sp)
|
||||
11c: 03012603 lw a2,48(sp)
|
||||
120: 03412683 lw a3,52(sp)
|
||||
124: 03812703 lw a4,56(sp)
|
||||
128: 03c12783 lw a5,60(sp)
|
||||
12c: 04012803 lw a6,64(sp)
|
||||
130: 04412883 lw a7,68(sp)
|
||||
134: 04812903 lw s2,72(sp)
|
||||
138: 04c12983 lw s3,76(sp)
|
||||
13c: 05012a03 lw s4,80(sp)
|
||||
140: 05412a83 lw s5,84(sp)
|
||||
144: 05812b03 lw s6,88(sp)
|
||||
148: 05c12b83 lw s7,92(sp)
|
||||
14c: 06012c03 lw s8,96(sp)
|
||||
150: 06412c83 lw s9,100(sp)
|
||||
154: 07012e03 lw t3,112(sp)
|
||||
158: 07412e83 lw t4,116(sp)
|
||||
15c: 07812f03 lw t5,120(sp)
|
||||
160: 07c12f83 lw t6,124(sp)
|
||||
164: 08010113 addi sp,sp,128
|
||||
168: 30200073 mret
|
||||
16c: 0000006f j 16c <trap_entry+0xfc>
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
0000016c <main>:
|
||||
16c: ff010113 addi sp,sp,-16
|
||||
170: 00812623 sw s0,12(sp)
|
||||
174: 01010413 addi s0,sp,16
|
||||
178: 10000797 auipc a5,0x10000
|
||||
17c: e8878793 addi a5,a5,-376 # 10000000 <_data>
|
||||
180: 0007a023 sw zero,0(a5)
|
||||
184: 200007b7 lui a5,0x20000
|
||||
188: 00878793 addi a5,a5,8 # 20000008 <__global_pointer$+0xffff808>
|
||||
18c: 0000c737 lui a4,0xc
|
||||
190: 35070713 addi a4,a4,848 # c350 <__stack_size+0xbf50>
|
||||
194: 00e7a023 sw a4,0(a5)
|
||||
198: 200007b7 lui a5,0x20000
|
||||
19c: 00700713 li a4,7
|
||||
1a0: 00e7a023 sw a4,0(a5) # 20000000 <__global_pointer$+0xffff800>
|
||||
1a4: 400007b7 lui a5,0x40000
|
||||
1a8: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
1ac: 00100713 li a4,1
|
||||
1b0: 00e7a023 sw a4,0(a5)
|
||||
1b4: 10000797 auipc a5,0x10000
|
||||
1b8: e4c78793 addi a5,a5,-436 # 10000000 <_data>
|
||||
1bc: 0007a703 lw a4,0(a5)
|
||||
1c0: 1f300793 li a5,499
|
||||
1c4: fee7f8e3 bgeu a5,a4,1b4 <main+0x48>
|
||||
1c8: 10000797 auipc a5,0x10000
|
||||
1cc: e3878793 addi a5,a5,-456 # 10000000 <_data>
|
||||
1d0: 0007a023 sw zero,0(a5)
|
||||
1d4: 400007b7 lui a5,0x40000
|
||||
1d8: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
1dc: 0007a703 lw a4,0(a5)
|
||||
1e0: 400007b7 lui a5,0x40000
|
||||
1e4: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
1e8: 00174713 xori a4,a4,1
|
||||
1ec: 00e7a023 sw a4,0(a5)
|
||||
1f0: fc5ff06f j 1b4 <main+0x48>
|
||||
|
||||
000001f4 <TIMER0_IRQHandler>:
|
||||
1f4: ff010113 addi sp,sp,-16
|
||||
1f8: 00812623 sw s0,12(sp)
|
||||
1fc: 01010413 addi s0,sp,16
|
||||
200: 200007b7 lui a5,0x20000
|
||||
204: 00700713 li a4,7
|
||||
208: 00e7a023 sw a4,0(a5) # 20000000 <__global_pointer$+0xffff800>
|
||||
20c: 10000797 auipc a5,0x10000
|
||||
210: df478793 addi a5,a5,-524 # 10000000 <_data>
|
||||
214: 0007a783 lw a5,0(a5)
|
||||
218: 00178713 addi a4,a5,1
|
||||
00000170 <main>:
|
||||
170: ff010113 addi sp,sp,-16
|
||||
174: 00812623 sw s0,12(sp)
|
||||
178: 01010413 addi s0,sp,16
|
||||
17c: 10000797 auipc a5,0x10000
|
||||
180: e8478793 addi a5,a5,-380 # 10000000 <_data>
|
||||
184: 0007a023 sw zero,0(a5)
|
||||
188: 10000797 auipc a5,0x10000
|
||||
18c: e7c78793 addi a5,a5,-388 # 10000004 <int_flag>
|
||||
190: 00078023 sb zero,0(a5)
|
||||
194: 200007b7 lui a5,0x20000
|
||||
198: 00878793 addi a5,a5,8 # 20000008 <_sp+0xfffe008>
|
||||
19c: 1f400713 li a4,500
|
||||
1a0: 00e7a023 sw a4,0(a5)
|
||||
1a4: 200007b7 lui a5,0x20000
|
||||
1a8: 00700713 li a4,7
|
||||
1ac: 00e7a023 sw a4,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
1b0: 10000797 auipc a5,0x10000
|
||||
1b4: e5478793 addi a5,a5,-428 # 10000004 <int_flag>
|
||||
1b8: 0007c783 lbu a5,0(a5)
|
||||
1bc: 0ff7f793 andi a5,a5,255
|
||||
1c0: fe0788e3 beqz a5,1b0 <main+0x40>
|
||||
1c4: 200007b7 lui a5,0x20000
|
||||
1c8: 0007a703 lw a4,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
1cc: 200007b7 lui a5,0x20000
|
||||
1d0: 00176713 ori a4,a4,1
|
||||
1d4: 00e7a023 sw a4,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
1d8: 10000797 auipc a5,0x10000
|
||||
1dc: e2c78793 addi a5,a5,-468 # 10000004 <int_flag>
|
||||
1e0: 00078023 sb zero,0(a5)
|
||||
1e4: 10000797 auipc a5,0x10000
|
||||
1e8: e1c78793 addi a5,a5,-484 # 10000000 <_data>
|
||||
1ec: 0007a783 lw a5,0(a5)
|
||||
1f0: 00178713 addi a4,a5,1
|
||||
1f4: 10000797 auipc a5,0x10000
|
||||
1f8: e0c78793 addi a5,a5,-500 # 10000000 <_data>
|
||||
1fc: 00e7a023 sw a4,0(a5)
|
||||
200: 10000797 auipc a5,0x10000
|
||||
204: e0078793 addi a5,a5,-512 # 10000000 <_data>
|
||||
208: 0007a703 lw a4,0(a5)
|
||||
20c: 00200793 li a5,2
|
||||
210: faf710e3 bne a4,a5,1b0 <main+0x40>
|
||||
214: 200007b7 lui a5,0x20000
|
||||
218: 0007a023 sw zero,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
21c: 10000797 auipc a5,0x10000
|
||||
220: de478793 addi a5,a5,-540 # 10000000 <_data>
|
||||
224: 00e7a023 sw a4,0(a5)
|
||||
228: 400007b7 lui a5,0x40000
|
||||
22c: 00478793 addi a5,a5,4 # 40000004 <__global_pointer$+0x2ffff804>
|
||||
230: 0007a023 sw zero,0(a5)
|
||||
234: 00000013 nop
|
||||
224: 0007a023 sw zero,0(a5)
|
||||
228: 00100d93 li s11,1
|
||||
22c: 00000013 nop
|
||||
230: 00000793 li a5,0
|
||||
234: 00078513 mv a0,a5
|
||||
238: 00c12403 lw s0,12(sp)
|
||||
23c: 01010113 addi sp,sp,16
|
||||
240: 00008067 ret
|
||||
|
||||
00000244 <timer0_irq_handler>:
|
||||
244: ff010113 addi sp,sp,-16
|
||||
248: 00812623 sw s0,12(sp)
|
||||
24c: 01010413 addi s0,sp,16
|
||||
250: 200007b7 lui a5,0x20000
|
||||
254: 0007a703 lw a4,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
258: 200007b7 lui a5,0x20000
|
||||
25c: 00476713 ori a4,a4,4
|
||||
260: 00e7a023 sw a4,0(a5) # 20000000 <_sp+0xfffe000>
|
||||
264: 10000797 auipc a5,0x10000
|
||||
268: da078793 addi a5,a5,-608 # 10000004 <int_flag>
|
||||
26c: 00100713 li a4,1
|
||||
270: 00e78023 sb a4,0(a5)
|
||||
274: 00000013 nop
|
||||
278: 00c12403 lw s0,12(sp)
|
||||
27c: 01010113 addi sp,sp,16
|
||||
280: 00008067 ret
|
||||
|
||||
00000284 <trap_handler>:
|
||||
284: fe010113 addi sp,sp,-32
|
||||
288: 00112e23 sw ra,28(sp)
|
||||
28c: 00812c23 sw s0,24(sp)
|
||||
290: 02010413 addi s0,sp,32
|
||||
294: fea42623 sw a0,-20(s0)
|
||||
298: fadff0ef jal ra,244 <timer0_irq_handler>
|
||||
29c: 00000013 nop
|
||||
2a0: 01c12083 lw ra,28(sp)
|
||||
2a4: 01812403 lw s0,24(sp)
|
||||
2a8: 02010113 addi sp,sp,32
|
||||
2ac: 00008067 ret
|
||||
|
||||
000002b0 <_init>:
|
||||
2b0: ff010113 addi sp,sp,-16
|
||||
2b4: 00812623 sw s0,12(sp)
|
||||
2b8: 01010413 addi s0,sp,16
|
||||
2bc: 00000797 auipc a5,0x0
|
||||
2c0: db478793 addi a5,a5,-588 # 70 <trap_entry>
|
||||
2c4: 30579073 csrw mtvec,a5
|
||||
2c8: 00000013 nop
|
||||
2cc: 00c12403 lw s0,12(sp)
|
||||
2d0: 01010113 addi sp,sp,16
|
||||
2d4: 00008067 ret
|
||||
|
||||
Disassembly of section .bss:
|
||||
|
||||
10000000 <__bss_start>:
|
||||
10000000: 0000 unimp
|
||||
...
|
||||
|
||||
10000004 <int_flag>:
|
||||
10000004: 0000 unimp
|
||||
...
|
||||
|
||||
Disassembly of section .stack:
|
||||
|
||||
10000400 <_sp-0x400>:
|
||||
10001800 <_sp-0x800>:
|
||||
...
|
||||
|
||||
Disassembly of section .comment:
|
||||
|
|
@ -181,11 +224,11 @@ Disassembly of section .comment:
|
|||
4: 2820 fld fs0,80(s0)
|
||||
6: 20554e47 fmsub.s ft8,fa0,ft5,ft4,rmm
|
||||
a: 434d li t1,19
|
||||
c: 2055 jal b0 <_timer0_handler+0x4c>
|
||||
c: 2055 jal b0 <trap_entry+0x40>
|
||||
e: 6345 lui t1,0x11
|
||||
10: 696c flw fa1,84(a0)
|
||||
12: 7370 flw fa2,100(a4)
|
||||
14: 2065 jal bc <_timer0_handler+0x58>
|
||||
14: 2065 jal bc <trap_entry+0x4c>
|
||||
16: 4952 lw s2,20(sp)
|
||||
18: 562d4353 0x562d4353
|
||||
1c: 4520 lw s0,72(a0)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,92 @@
|
|||
#define REGBYTES 4
|
||||
#define STORE sw
|
||||
#define LOAD lw
|
||||
|
||||
|
||||
.section .text.entry
|
||||
.align 2
|
||||
.global trap_entry
|
||||
trap_entry:
|
||||
|
||||
addi sp, sp, -32*REGBYTES
|
||||
|
||||
STORE x1, 1*REGBYTES(sp)
|
||||
STORE x2, 2*REGBYTES(sp)
|
||||
STORE x3, 3*REGBYTES(sp)
|
||||
STORE x4, 4*REGBYTES(sp)
|
||||
STORE x5, 5*REGBYTES(sp)
|
||||
STORE x6, 6*REGBYTES(sp)
|
||||
STORE x7, 7*REGBYTES(sp)
|
||||
STORE x8, 8*REGBYTES(sp)
|
||||
STORE x9, 9*REGBYTES(sp)
|
||||
STORE x10, 10*REGBYTES(sp)
|
||||
STORE x11, 11*REGBYTES(sp)
|
||||
STORE x12, 12*REGBYTES(sp)
|
||||
STORE x13, 13*REGBYTES(sp)
|
||||
STORE x14, 14*REGBYTES(sp)
|
||||
STORE x15, 15*REGBYTES(sp)
|
||||
STORE x16, 16*REGBYTES(sp)
|
||||
STORE x17, 17*REGBYTES(sp)
|
||||
STORE x18, 18*REGBYTES(sp)
|
||||
STORE x19, 19*REGBYTES(sp)
|
||||
STORE x20, 20*REGBYTES(sp)
|
||||
STORE x21, 21*REGBYTES(sp)
|
||||
STORE x22, 22*REGBYTES(sp)
|
||||
STORE x23, 23*REGBYTES(sp)
|
||||
STORE x24, 24*REGBYTES(sp)
|
||||
STORE x25, 25*REGBYTES(sp)
|
||||
#ifndef SIMULATION
|
||||
STORE x26, 26*REGBYTES(sp)
|
||||
STORE x27, 27*REGBYTES(sp)
|
||||
#endif
|
||||
STORE x28, 28*REGBYTES(sp)
|
||||
STORE x29, 29*REGBYTES(sp)
|
||||
STORE x30, 30*REGBYTES(sp)
|
||||
STORE x31, 31*REGBYTES(sp)
|
||||
|
||||
csrr a0, mcause
|
||||
call trap_handler
|
||||
|
||||
LOAD x1, 1*REGBYTES(sp)
|
||||
LOAD x2, 2*REGBYTES(sp)
|
||||
LOAD x3, 3*REGBYTES(sp)
|
||||
LOAD x4, 4*REGBYTES(sp)
|
||||
LOAD x5, 5*REGBYTES(sp)
|
||||
LOAD x6, 6*REGBYTES(sp)
|
||||
LOAD x7, 7*REGBYTES(sp)
|
||||
LOAD x8, 8*REGBYTES(sp)
|
||||
LOAD x9, 9*REGBYTES(sp)
|
||||
LOAD x10, 10*REGBYTES(sp)
|
||||
LOAD x11, 11*REGBYTES(sp)
|
||||
LOAD x12, 12*REGBYTES(sp)
|
||||
LOAD x13, 13*REGBYTES(sp)
|
||||
LOAD x14, 14*REGBYTES(sp)
|
||||
LOAD x15, 15*REGBYTES(sp)
|
||||
LOAD x16, 16*REGBYTES(sp)
|
||||
LOAD x17, 17*REGBYTES(sp)
|
||||
LOAD x18, 18*REGBYTES(sp)
|
||||
LOAD x19, 19*REGBYTES(sp)
|
||||
LOAD x20, 20*REGBYTES(sp)
|
||||
LOAD x21, 21*REGBYTES(sp)
|
||||
LOAD x22, 22*REGBYTES(sp)
|
||||
LOAD x23, 23*REGBYTES(sp)
|
||||
LOAD x24, 24*REGBYTES(sp)
|
||||
LOAD x25, 25*REGBYTES(sp)
|
||||
#ifndef SIMULATION
|
||||
LOAD x26, 26*REGBYTES(sp)
|
||||
LOAD x27, 27*REGBYTES(sp)
|
||||
#endif
|
||||
LOAD x28, 28*REGBYTES(sp)
|
||||
LOAD x29, 29*REGBYTES(sp)
|
||||
LOAD x30, 30*REGBYTES(sp)
|
||||
LOAD x31, 31*REGBYTES(sp)
|
||||
|
||||
addi sp, sp, 32*REGBYTES
|
||||
|
||||
mret
|
||||
|
||||
|
||||
.weak trap_handler
|
||||
trap_handler:
|
||||
1:
|
||||
j 1b
|
||||
|
|
@ -1,9 +1,18 @@
|
|||
RISCV_ARCH := rv32im
|
||||
RISCV_ABI := ilp32
|
||||
|
||||
|
||||
TARGET = uart_tx
|
||||
|
||||
|
||||
#CFLAGS += -DSIMULATION
|
||||
#CFLAGS += -O2
|
||||
#ASM_SRCS +=
|
||||
#LDFLAGS +=
|
||||
#INCLUDES += -I.
|
||||
|
||||
C_SRCS := \
|
||||
main.c \
|
||||
|
||||
|
||||
include ../common.mk
|
||||
|
||||
|
||||
.PHONY: all
|
||||
all:
|
||||
$(RISCV_GCC) $(CFLAGS) ../start.S main.c xprintf.c -T ../link.lds -o uart_tx
|
||||
$(RISCV_OBJCOPY) -O binary uart_tx uart_tx.bin
|
||||
$(RISCV_OBJDUMP) --disassemble-all uart_tx > uart_tx.dump
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#include <stdint.h>
|
||||
|
||||
#include "../include/uart.h"
|
||||
#include "xprintf.h"
|
||||
#include "../include/xprintf.h"
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
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Load Diff
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Reference in New Issue