update on aes_instructions

src/ieu/aes_instructions/aes32esi.sv

@@ -40,16 +40,22 @@ module aes32esi(input logic [1:0] bs,
     
    // Shift bs by 3 to get shamt
    assign shamt = {bs, 3'b0};
+   
    // Shift rs2 right by shamt to get sbox input
    assign sbox_in_32 = (rs2 >> shamt);
+   
    // Take the bottom byte as an input to the substitution box
    assign sbox_in = sbox_in_32[7:0];
+   
    // Substitute
    aes_sbox subbox(.in(sbox_in),.out(sbox_out));
+   
    // Pad sbox output
    assign so = {24'h000000,sbox_out};
+   
    // Rotate so left by shamt
    rotate_left rol32(.input_data(so),.shamt(shamt),.rot_data(so_rotate));
+   
    // Set result X(rs1)[31..0] ^ rol32(so, unsigned(shamt));
    assign data_out = rs1 ^ so_rotate;
    

src/ieu/aes_instructions/aes32esmi.sv

@@ -41,18 +41,25 @@ module aes32esmi(input logic [1:0]   bs,
    
    // Shift bs by 3 to get shamt
    assign shamt = {bs, 3'b0};
+   
    // Shift rs2 right by shamt to get sbox input
    assign sbox_in_32 = (rs2 >> shamt);
+   
    // Take the bottom byte as an input to the substitution box
    assign sbox_in = sbox_in_32[7:0];
+   
    // Substitute
    aes_sbox sbox(.in(sbox_in),.out(sbox_out));
+   
    // Pad sbox output
    assign so = {24'h000000,sbox_out};
+   
    // Mix Word using aes_mixword component
    mixword mwd(.word(so),.mixed_word(mixed));
+   
    // Rotate so left by shamt
    rotate_left rol32(.input_data(mixed),.shamt(shamt),.rot_data(mixed_rotate));
+   
    // Set result X(rs1)[31..0] ^ rol32(mixed, unsigned(shamt));
    assign data_out = rs1 ^ mixed_rotate;