Costas: Remove while(1) and allow proper returns.
[firearm.git] / Execute.v
index 4e3f44f..ab204a0 100644 (file)
--- a/Execute.v
+++ b/Execute.v
@@ -23,7 +23,10 @@ module Execute(
        output reg [3:0] write_num = 4'bxxxx,
        output reg [31:0] write_data = 32'hxxxxxxxx,
        output reg [31:0] jmppc,
-       output reg jmp
+       output reg jmp,
+       output reg [31:0] outpc,
+       output reg [31:0] outinsn,
+       output reg [31:0] outop0, outop1, outop2
        );
        
        reg mult_start;
@@ -65,6 +68,11 @@ module Execute(
                        write_reg <= next_write_reg;
                        write_num <= next_write_num;
                        write_data <= next_write_data;
+                       outpc <= pc;
+                       outinsn <= insn;
+                       outop0 <= op0;
+                       outop1 <= op1;
+                       outop2 <= op2;
                end
        end
 
@@ -93,7 +101,7 @@ module Execute(
                alu_setflags = 1'bx;
 
                jmp = 1'b0;
-               jmppc = 32'hxxxxxxxx;
+               jmppc = 32'h00000000;
 
                casez (insn)
                `DECODE_ALU_MULT:       /* Multiply -- must come before ALU, because it pattern matches a specific case of ALU */
@@ -163,7 +171,7 @@ module Execute(
                begin end
                `DECODE_BRANCH:
                begin
-                       if(!prevstall && !inbubble) begin
+                       if(!inbubble && !flush) begin
                                jmppc = pc + op0 + 32'h8;
                                if(insn[24]) begin
                                        next_write_reg = 1;
@@ -236,8 +244,8 @@ module ALU(
        output reg [31:0] cpsr_out,
        output reg setres
 );
-       wire [31:0] res;
-       wire flag_n, flag_z, flag_c, flag_v, setres;
+       reg [31:0] res;
+       reg flag_n, flag_z, flag_c, flag_v;
        wire [32:0] sum, diff, rdiff;
        wire sum_v, diff_v, rdiff_v;
 
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