1 files changed, 54 insertions, 0 deletions
diff --git a/icefuzz/make_fflogic.py b/icefuzz/make_fflogic.py
new file mode 100644
index 0000000..9bc2c5d
--- /dev/null
+++ b/icefuzz/make_fflogic.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+
+from __future__ import division
+from __future__ import print_function
+from fuzzconfig import *
+import numpy as np
+import os
+
+os.system("rm -rf work_fflogic")
+os.mkdir("work_fflogic")
+
+def random_op():
+    return np.random.choice(["+", "-", "*", "^", "&", "|"])
+
+def print_seq_op(dst, src1, src2, op, f):
+    mode = np.random.choice(list("abc"))
+    negreset = np.random.choice(["!", ""])
+    enable = np.random.choice(["if (en) ", ""])
+    if mode == "a":
+        print("  always @(%sedge clk) begin" % np.random.choice(["pos", "neg"]), file=f)
+        print("    %s%s <= %s %s %s;" % (enable, dst, src1, op, src2), file=f)
+        print("  end", file=f)
+    elif mode == "b":
+        print("  always @(%sedge clk) begin" % np.random.choice(["pos", "neg"]), file=f)
+        print("    if (%srst)" % negreset, file=f)
+        print("      %s <= %d;" % (dst, np.random.randint(2**16)), file=f)
+        print("    else", file=f)
+        print("      %s%s <= %s %s %s;" % (enable, dst, src1, op, src2), file=f)
+        print("  end", file=f)
+    elif mode == "c":
+        print("  always @(%sedge clk, %sedge rst) begin" % (np.random.choice(["pos", "neg"]), "neg" if negreset == "!" else "pos"), file=f)
+        print("    if (%srst)" % negreset, file=f)
+        print("      %s <= %d;" % (dst, np.random.randint(2**16)), file=f)
+        print("    else", file=f)
+        print("      %s%s <= %s %s %s;" % (enable, dst, src1, op, src2), file=f)
+        print("  end", file=f)
+    else:
+        assert False
+
+for idx in range(num):
+    with open("work_fflogic/fflogic_%02d.v" % idx, "w") as f:
+        print("module top(input clk, rst, en, input [15:0] a, b, c, d, output [15:0] y, output z);", file=f)
+        print("  reg [15:0] p, q;", file=f)
+        print_seq_op("p", "a", "b", random_op(), f)
+        print_seq_op("q", "c", "d", random_op(), f)
+        print("  assign y = p %s q, z = clk ^ rst ^ en;" % random_op(), file=f)
+        print("endmodule", file=f)
+
+with open("work_fflogic/Makefile", "w") as f:
+    print("all: %s" % " ".join(["fflogic_%02d.bin" % i for i in range(num)]), file=f)
+    for i in range(num):
+        print("fflogic_%02d.bin:" % i, file=f)
+        print("\t-bash ../icecube.sh fflogic_%02d > fflogic_%02d.log 2>&1 && rm -rf fflogic_%02d.tmp || tail fflogic_%02d.log" % (i, i, i, i), file=f)
+