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Add c.nop

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Sven Stucki 2015-08-26 19:11:54 +02:00
parent 793d45f254
commit a18972db26
1 changed files with 2 additions and 1 deletions
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compressed_decoder.sv
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@ -235,12 +235,13 @@ module compressed_decoder
3'b110: begin
if (instr_i[11:7] == 5'b0) begin
// c.addi16sp -> addi x2, x2, nzimm
// c.nop
instr_o = {{3 {instr_i[12]}}, instr_i[4:2], instr_i[5], instr_i[6], 4'b0, 5'h02, 3'b000, 5'h02, `OPCODE_OPIMM};
end else begin
// c.addi -> addi rd, rd, nzimm
instr_o = {{6 {instr_i[12]}}, instr_i[12], instr_i[6:2], instr_i[11:7], 3'b0, instr_i[11:7], `OPCODE_OPIMM};
if ({instr_i[12], instr_i[6:2]} == 6'b0) illegal_instr_o = 1'b1;
end
if ({instr_i[12], instr_i[6:2]} == 6'b0) illegal_instr_o = 1'b1;
end
3'b111: begin