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rtl refactoring

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This commit is contained in:
Blaise Tine
2020-05-05 13:31:50 -04:00
parent b7e892ee16
commit 2ab90e9436
8 changed files with 186 additions and 207 deletions
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24
hw/rtl/VX_exec_unit.v
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@@ -88,14 +88,14 @@ module VX_exec_unit (
always @(*)
begin
case (exec_unit_req_if.branch_type)
`BEQ: temp_branch_dir = (branch_use_alu_result == 0) ? `TAKEN : `NOT_TAKEN;
`BNE: temp_branch_dir = (branch_use_alu_result == 0) ? `NOT_TAKEN : `TAKEN;
`BLT: temp_branch_dir = (branch_use_alu_result[31] == 0) ? `NOT_TAKEN : `TAKEN;
`BGT: temp_branch_dir = (branch_use_alu_result[31] == 0) ? `TAKEN : `NOT_TAKEN;
`BLTU: temp_branch_dir = (branch_use_alu_result[31] == 0) ? `NOT_TAKEN : `TAKEN;
`BGTU: temp_branch_dir = (branch_use_alu_result[31] == 0) ? `TAKEN : `NOT_TAKEN;
`NO_BRANCH: temp_branch_dir = `NOT_TAKEN;
default: temp_branch_dir = `NOT_TAKEN;
`BR_EQ: temp_branch_dir = (branch_use_alu_result == 0);
`BR_NE: temp_branch_dir = (branch_use_alu_result != 0);
`BR_LT: temp_branch_dir = (branch_use_alu_result[31] != 0);
`BR_GT: temp_branch_dir = (branch_use_alu_result[31] == 0);
`BR_LTU: temp_branch_dir = (branch_use_alu_result[31] != 0);
`BR_GTU: temp_branch_dir = (branch_use_alu_result[31] == 0);
`BR_NO: temp_branch_dir = 0;
default: temp_branch_dir = 0;
endcase // in_branch_type
end
@@ -128,7 +128,7 @@ module VX_exec_unit (
assign jal_rsp_temp_if.jal_warp_num = exec_unit_req_if.warp_num;
// Branch rsp
assign branch_rsp_temp_if.valid_branch = (exec_unit_req_if.branch_type != `NO_BRANCH) && (| exec_unit_req_if.valid);
assign branch_rsp_temp_if.valid_branch = (exec_unit_req_if.branch_type != `BR_NO) && (| exec_unit_req_if.valid);
assign branch_rsp_temp_if.branch_dir = temp_branch_dir;
assign branch_rsp_temp_if.branch_warp_num = exec_unit_req_if.warp_num;
assign branch_rsp_temp_if.branch_dest = $signed(exec_unit_req_if.curr_PC) + ($signed(exec_unit_req_if.itype_immed) << 1); // itype_immed = branch_offset
@@ -168,9 +168,9 @@ module VX_exec_unit (
// always @(*) begin
// case (in_alu_op)
// `CSR_ALU_RW: out_csr_result = in_csr_mask;
// `CSR_ALU_RS: out_csr_result = in_csr_data | in_csr_mask;
// `CSR_ALU_RC: out_csr_result = in_csr_data & (32'hFFFFFFFF - in_csr_mask);
// `ALU_CSR_RW: out_csr_result = in_csr_mask;
// `ALU_CSR_RS: out_csr_result = in_csr_data | in_csr_mask;
// `ALU_CSR_RC: out_csr_result = in_csr_data & (32'hFFFFFFFF - in_csr_mask);
// default: out_csr_result = 32'hdeadbeef;
// endcase