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53 lines
1.7 KiB
Python
Executable File
53 lines
1.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# DESCRIPTION: Verilator: Verilog Test driver/expect definition
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#
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# Copyright 2024 by Wilson Snyder. This program is free software; you
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# can redistribute it and/or modify it under the terms of either the GNU
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# Lesser General Public License Version 3 or the Perl Artistic License
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# Version 2.0.
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# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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import vltest_bootstrap
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test.scenarios('vlt')
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test.top_filename = test.obj_dir + "/t_vthread.v"
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test.sanitize = False # GCC takes too long otherwise
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def gen(filename, n):
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with open(filename, 'w', encoding="utf8") as fh:
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fh.write("// Generated by t_vthread.py\n")
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fh.write("module genmod #(int val = 0)(clk, o);\n")
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fh.write(" input clk;\n")
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fh.write(" output int o;\n")
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fh.write(" always @ (posedge clk) begin\n")
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fh.write(" o <= val;\n")
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fh.write(" end\n")
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fh.write("endmodule\n")
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fh.write("module t (clk, o);\n")
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fh.write(" input clk;\n")
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fh.write(" output int o;\n")
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for i in range(0, n + 1):
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fh.write(" int r" + str(i) + ";\n")
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fh.write(" genmod #(.val(" + str(i) + ")) rm" + str(i) + " (.clk, .o(r" + str(i) +
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"));\n")
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fh.write(" always @ (posedge clk) begin\n")
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fh.write(" o <= r" + str(n) + ";\n")
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fh.write(' $write("*-* All Finished *-*\\n");' + "\n")
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fh.write(' $finish;' + "\n")
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fh.write(" end\n")
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fh.write("endmodule\n")
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gen(test.top_filename, 6000)
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test.compile(
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# use --trace to generate trace files that can be parallelized
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verilator_flags2=["--stats --trace --verilate-jobs 2"])
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test.execute()
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test.file_grep(test.stats, r'Verilate jobs: 2')
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test.passes()
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