X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/c2b9d4b7fdabce17f5204750bad87635d5fa8a34..6060e5359241449a70a27ed0d7023951ee21ceeb:/system.v

diff --git a/system.v b/system.v
index 4a485c3..4601ae7 100644
--- a/system.v
+++ b/system.v
@@ -54,9 +54,7 @@ module System(input clk);
 	wire [31:0] pc_out_fetch;
 	wire [31:0] pc_out_issue;
 
-	wire execute_outflush = jmp;
-	wire issue_flush = execute_outflush;
-	wire execute_flush = 1'b0;
+	wire execute_out_backflush;
 
 	BusArbiter busarbiter(.bus_req(bus_req), .bus_ack(bus_ack));
 
@@ -88,7 +86,7 @@ module System(input clk);
 	Issue issue(
 		.clk(clk),
 		.Nrst(1'b1 /* XXX */),
-		.stall(stall_cause_execute), .flush(issue_flush),
+		.stall(stall_cause_execute), .flush(execute_out_backflush),
 		.inbubble(bubble_out_fetch), .insn(insn_out_fetch),
 		.inpc(pc_out_fetch), .cpsr(32'b0 /* XXX */),
 		.outstall(stall_cause_issue), .outbubble(bubble_out_issue),
@@ -110,7 +108,7 @@ module System(input clk);
 	
 	Execute execute(
 		.clk(clk), .Nrst(1'b0),
-		.stall(1'b0 /* XXX */), .flush(execute_flush),
+		.stall(1'b0 /* XXX */), .flush(1'b0),
 		.inbubble(bubble_out_issue), .pc(pc_out_issue), .insn(insn_out_issue),
 		.cpsr(32'b0 /* XXX */), .spsr(decode_out_spsr), .op0(decode_out_op0), .op1(decode_out_op1),
 		.op2(decode_out_op2), .carry(decode_out_carry),
@@ -119,6 +117,7 @@ module System(input clk);
 		.write_data(execute_out_write_data),
 		.jmppc(jmppc),
 		.jmp(jmp));
+	assign execute_out_backflush = jmp;
 
 	reg [31:0] clockno = 0;
 	always @(posedge clk)
@@ -128,6 +127,6 @@ module System(input clk);
 		$display("%3d: FETCH:            Bubble: %d, Instruction: %08x, PC: %08x", clockno, bubble_out_fetch, insn_out_fetch, pc_out_fetch);
 		$display("%3d: ISSUE:  Stall: %d, Bubble: %d, Instruction: %08x, PC: %08x", clockno, stall_cause_issue, bubble_out_issue, insn_out_issue, pc_out_issue);
 		$display("%3d: DECODE:                      op1 %08x, op2 %08x, op3 %08x, carry %d", clockno, decode_out_op0, decode_out_op1, decode_out_op2, decode_out_carry);
-		$display("%3d: EXEC:   Stall: %d, Bubble: %d, Output: %d, [%08x -> %d]", clockno, stall_cause_execute, execute_out_bubble, execute_out_write_reg, execute_out_write_data, execute_out_write_num);
+		$display("%3d: EXEC:   Stall: %d, Bubble: %d, Reg: %d, [%08x -> %d], Jmp: %d [%08x]", clockno, stall_cause_execute, execute_out_bubble, execute_out_write_reg, execute_out_write_data, execute_out_write_num, jmp, jmppc);
 	end
 endmodule