From deb7d0a6fc76d5250c238d479cf97d4755abef01 Mon Sep 17 00:00:00 2001 From: Flavian Kaufmann Date: Sun, 12 May 2024 21:27:41 +0200 Subject: refactoring --- src/immediate_extend.v | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 src/immediate_extend.v (limited to 'src/immediate_extend.v') diff --git a/src/immediate_extend.v b/src/immediate_extend.v new file mode 100644 index 0000000..749cf2b --- /dev/null +++ b/src/immediate_extend.v @@ -0,0 +1,20 @@ +module immediate_extend ( + input [31:0] instr, + input [2:0] imm_src, + output reg [31:0] imm +); + + +always @ (*) begin + case (imm_src) + 3'b010: imm <= { {21{instr[31]}}, instr[30:20] }; // I + 3'b011: imm <= { {21{instr[31]}}, instr[30:25], instr[11:7] }; // S + 3'b100: imm <= { {20{instr[31]}}, instr[7], instr[30:25], instr[11:8], 1'b0 }; // B + 3'b101: imm <= { instr[31:12], 12'b0 }; // U + 3'b110: imm <= { {12{instr[31]}}, instr[19:12], instr[20], instr[30:21], 1'b0 }; // J + default: imm <= 32'b0; // Unknown + endcase +end + + +endmodule -- cgit v1.2.3