rtl: refactor filenames and directory hierarchy

1 files changed, 0 insertions, 42 deletions

diff --git a/rtl/core/shifter.sv b/rtl/core/shifter.sv
deleted file mode 100644
index 96b8866..0000000
--- a/rtl/core/shifter.sv
+++ /dev/null
@@ -1,42 +0,0 @@
-`include "core/uarch.sv"
-
-module core_shifter
-#(parameter W=16)
-(
-	input  shifter_control ctrl,
-	input  logic[W - 1:0]  base,
-	input  logic[7:0]      shift,
-	input  logic           c_in,
-
-	output logic[W - 1:0]  q,
-	output logic           c
-);
-
-	localparam LOG = $clog2(W);
-
-	logic[W - 1:0] q_no_c, q_shl, q_shr, q_ror;
-	logic[W:0] sign_mask;
-	logic c_shl, c_shr, c_ror;
-
-	assign sign_mask = {(W + 1){ctrl.sign_extend & base[W - 1]}};
-	assign {c_shl, q_shl} = {c_in, base} << shift;
-	assign {q_shr, c_shr} = {base, c_in} >> shift | (sign_mask & ~(sign_mask >> shift));
-
-	logic ror_cycle;
-	logic[LOG - 1:0] ror_shift;
-	logic[2 * W:0] ror_out;
-
-	assign ror_shift = shift[LOG - 1:0];
-	assign ror_cycle = |shift[7:LOG] & ~|ror_shift;
-	assign ror_out = {base, base, c_in} >> {ror_cycle, ror_shift};
-	assign {q_ror, c_ror} = ror_out[W:0];
-
-	always_comb
-		if(ctrl.ror)
-			{c, q} = {c_ror, q_ror};
-		else if(ctrl.shr)
-			{c, q} = {c_shr, q_shr[W - 1] | (ctrl.put_carry && c_in && shift != 0), q_shr[W - 2:0]};
-		else
-			{c, q} = {c_shl, q_shl};
-
-endmodule