mirror of
https://github.com/YosysHQ/yosys
synced 2025-10-31 03:32:29 +00:00
101 lines
4.6 KiB
Python
101 lines
4.6 KiB
Python
#!/usr/bin/env python3
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import argparse
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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 random_expression(depth = 3, maxparam = 0):
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def recursion():
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return random_expression(depth = depth-1, maxparam = maxparam)
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if depth == 0:
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if maxparam != 0 and random.randint(0, 1) != 0:
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return 'p%02d' % random.randint(0, maxparam-1)
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return random.choice([ '%e', '%f', '%g' ]) % random.uniform(-2, +2)
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if random.randint(0, 4) == 0:
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return recursion() + random.choice([ ' < ', ' <= ', ' == ', ' != ', ' >= ', ' > ' ]) + recursion() + ' ? ' + recursion() + ' : ' + recursion()
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op_prefix = [ '+(', '-(' ]
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op_infix = [ ' + ', ' - ', ' * ', ' / ' ]
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op_func1 = [ '$ln', '$log10', '$exp', '$sqrt', '$floor', '$ceil', '$sin', '$cos', '$tan', '$asin', '$acos', '$atan', '$sinh', '$cosh', '$tanh', '$asinh', '$acosh', '$atanh' ]
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op_func2 = [ '$pow', '$atan2', '$hypot' ]
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op = random.choice(op_prefix + op_infix + op_func1 + op_func2)
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if op in op_prefix:
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return op + recursion() + ')'
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if op in op_infix:
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return '(' + recursion() + op + recursion() + ')'
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if op in op_func1:
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return op + '(' + recursion() + ')'
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if op in op_func2:
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return op + '(' + recursion() + ', ' + recursion() + ')'
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raise
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parser = argparse.ArgumentParser(formatter_class = argparse.ArgumentDefaultsHelpFormatter)
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parser.add_argument('-S', '--seed', type = int, help = 'seed for PRNG')
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parser.add_argument('-c', '--count', type = int, default = 100, help = 'number of test cases to generate')
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args = parser.parse_args()
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if args.seed is not None:
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print("PRNG seed: %d" % args.seed)
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random.seed(args.seed)
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for idx in range(args.count):
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with open('temp/uut_%05d.v' % idx, 'w') as f:
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with redirect_stdout(f):
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print('module uut_%05d(output [63:0] %s);\n' % (idx, ', '.join(['y%02d' % i for i in range(100)])))
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for i in range(30):
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if idx < 10:
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print('localparam p%02d = %s;' % (i, random_expression()))
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else:
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print('localparam%s p%02d = %s;' % (random.choice(['', ' real', ' integer']), i, random_expression()))
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for i in range(30, 60):
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if idx < 10:
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print('localparam p%02d = %s;' % (i, random_expression(maxparam = 30)))
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else:
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print('localparam%s p%02d = %s;' % (random.choice(['', ' real', ' integer']), i, random_expression(maxparam = 30)))
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for i in range(100):
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print('assign y%02d = 65536 * (%s);' % (i, random_expression(maxparam = 60)))
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print('endmodule')
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with open('temp/uut_%05d.ys' % idx, 'w') as f:
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with redirect_stdout(f):
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print('read_verilog uut_%05d.v' % idx)
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print('rename uut_%05d uut_%05d_syn' % (idx, idx))
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print('write_verilog uut_%05d_syn.v' % idx)
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with open('temp/uut_%05d_tb.v' % idx, 'w') as f:
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with redirect_stdout(f):
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print('module uut_%05d_tb;\n' % idx)
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print('wire [63:0] %s;' % (', '.join(['r%02d' % i for i in range(100)])))
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print('wire [63:0] %s;' % (', '.join(['s%02d' % i for i in range(100)])))
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print('uut_%05d ref(%s);' % (idx, ', '.join(['r%02d' % i for i in range(100)])))
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print('uut_%05d_syn syn(%s);' % (idx, ', '.join(['s%02d' % i for i in range(100)])))
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print('task compare_ref_syn;')
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print(' input [7:0] i;')
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print(' input [63:0] r, s;')
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print(' reg [64*8-1:0] buffer;')
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print(' integer j;')
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print(' begin')
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print(' if (-1 <= $signed(r-s) && $signed(r-s) <= +1) begin')
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print(' // $display("%d: %b %b", i, r, s);')
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print(' end else if (r === s) begin ')
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print(' // $display("%d: %b %b", i, r, s);')
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print(' end else begin ')
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print(' for (j = 0; j < 64; j = j+1)')
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print(' buffer[j*8 +: 8] = r[j] !== s[j] ? "^" : " ";')
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print(' $display("\\n%3d: %b %b", i, r, s);')
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print(' $display(" %s %s", buffer, buffer);')
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print(' end')
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print(' end')
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print('endtask')
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print('initial begin #1;')
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for i in range(100):
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print(' compare_ref_syn(%2d, r%02d, s%02d);' % (i, i, i))
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print('end')
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print('endmodule')
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