mirror of https://github.com/YosysHQ/yosys.git
51 lines
2.0 KiB
Python
51 lines
2.0 KiB
Python
#!/usr/bin/python
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from __future__ import division
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from __future__ import print_function
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import sys
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import random
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from contextlib import contextmanager
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@contextmanager
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def redirect_stdout(new_target):
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old_target, sys.stdout = sys.stdout, new_target
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try:
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yield new_target
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finally:
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sys.stdout = old_target
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def maybe_plus_e(expr):
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if random.randint(0, 4) == 0:
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return "(%s + e)" % expr
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else:
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return expr
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for idx in range(100):
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with file('temp/uut_%05d.v' % idx, 'w') as f, redirect_stdout(f):
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print('module uut_%05d(a, b, c, d, e, s, y);' % (idx))
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ac_signed = random.choice(['', ' signed'])
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bd_signed = random.choice(['', ' signed'])
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op = random.choice(['+', '-', '*', '/', '%', '<<', '>>', '<<<', '>>>'])
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print(' input%s [%d:0] a;' % (ac_signed, random.randint(0, 8)))
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print(' input%s [%d:0] b;' % (bd_signed, random.randint(0, 8)))
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print(' input%s [%d:0] c;' % (ac_signed, random.randint(0, 8)))
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print(' input%s [%d:0] d;' % (bd_signed, random.randint(0, 8)))
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print(' input signed [%d:0] e;' % random.randint(0, 8))
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print(' input s;')
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print(' output [%d:0] y;' % random.randint(0, 8))
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print(' assign y = (s ? %s(%s %s %s) : %s(%s %s %s))%s;' %
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(random.choice(['', '$signed', '$unsigned']), maybe_plus_e('a'), op, maybe_plus_e('b'),
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random.choice(['', '$signed', '$unsigned']), maybe_plus_e('c'), op, maybe_plus_e('d'),
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' + e' if random.randint(0, 4) == 0 else ''))
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print('endmodule')
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with file('temp/uut_%05d.ys' % idx, 'w') as f, redirect_stdout(f):
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print('read_verilog temp/uut_%05d.v' % idx)
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print('proc;;')
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print('copy uut_%05d gold' % idx)
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print('rename uut_%05d gate' % idx)
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print('share -aggressive gate')
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print('miter -equiv -flatten -ignore_gold_x -make_outputs -make_outcmp gold gate miter')
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print('sat -set-def-inputs -verify -prove trigger 0 -show-inputs -show-outputs miter')
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