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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2016 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
`define stop $stop
`define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
module t (/*AUTOARG*/);
// verilator lint_off ASCRANGE
// verilator lint_off WIDTH
reg [63:0] sum; // Checked not in objects
reg [63:0] add;
reg [2:1] [4:3] array [5:6] [7:8];
reg [1:2] [3:4] larray [6:5] [8:7];
bit [31:0] depth1_array [0:0];
int oned [3:1];
int twod [3:1][9:8];
string str1;
string str2;
typedef struct packed {
reg [1:0] [63:0] subarray;
} str_t;
typedef struct packed {
str_t mid;
} mid_t;
mid_t strarray[3];
function [63:0] crc (input [63:0] sum, input [31:0] a, input [31:0] b, input [31:0] c, input [31:0] d);
crc = {sum[62:0],sum[63]} ^ {4'b0,a[7:0], 4'h0,b[7:0], 4'h0,c[7:0], 4'h0,d[7:0]};
endfunction
initial begin
sum = 0;
// We use 'index_' as the prefix for all loop vars,
// this allows t_foreach.py to confirm that all loops
// have been unrolled and flattened away and no loop vars
// remain in the generated .cpp
foreach (depth1_array[index_a]) begin
sum = crc(sum, index_a, 0, 0, 0);
// Ensure the index never goes out of bounds.
// We used to get this wrong for an array of depth 1.
assert (index_a != -1);
assert (index_a != 1);
end
`checkh(sum, 64'h0);
sum = 0;
foreach (array[index_a]) begin
sum = crc(sum, index_a, 0, 0, 0);
end
`checkh(sum, 64'h000000c000000000);
sum = 0;
foreach (array[index_a,index_b]) begin
sum = crc(sum, index_a, index_b, 0, 0);
end
`checkh(sum, 64'h000003601e000000);
sum = 0;
foreach (array[index_a,index_b,index_c]) begin
sum = crc(sum, index_a, index_b, index_c, 0);
end
`checkh(sum, 64'h00003123fc101000);
sum = 0;
foreach (array[index_a,index_b,index_c,index_d]) begin
sum = crc(sum, index_a, index_b, index_c, index_d);
end
`checkh(sum, 64'h0030128ab2a8e557);
// comma syntax
sum = 0;
foreach (array[,index_b]) begin
$display(index_b);
sum = crc(sum, 0, index_b, 0, 0);
end
`checkh(sum, 64'h0000000006000000);
//
sum = 0;
foreach (larray[index_a]) begin
sum = crc(sum, index_a, 0, 0, 0);
end
`checkh(sum, 64'h0000009000000000);
sum = 0;
foreach (larray[index_a,index_b]) begin
sum = crc(sum, index_a, index_b, 0, 0);
sum = sum + {4'b0,index_a[7:0], 4'h0,index_b[7:0]};
end
`checkh(sum, 64'h000002704b057073);
sum = 0;
foreach (larray[index_a,index_b,index_c]) begin
sum = crc(sum, index_a, index_b, index_c, 0);
end
`checkh(sum, 64'h00002136f9000000);
sum = 0;
foreach (larray[index_a,index_b,index_c,index_d]) begin
sum = crc(sum, index_a, index_b, index_c, index_d);
end
`checkh(sum, 64'h0020179aa7aa0aaa);
add = 0;
strarray[0].mid.subarray[0] = 1;
strarray[0].mid.subarray[1] = 2;
strarray[1].mid.subarray[0] = 4;
strarray[1].mid.subarray[1] = 5;
strarray[2].mid.subarray[0] = 6;
strarray[2].mid.subarray[1] = 7;
foreach (strarray[s])
foreach (strarray[s].mid.subarray[ss])
add += strarray[s].mid.subarray[ss];
`checkh(add, 'h19);
add = 0;
foreach (oned[i]) begin
++add;
break;
end
`checkh(add, 1); // 9
add = 0;
foreach (oned[i]) begin
++add;
continue;
add += 100;
end
`checkh(add, 3); // 9, 8, 7
add = 0;
foreach (twod[i, j]) begin
++add;
break;
end
// See https://www.accellera.org/images/eda/sv-bc/10303.html
`checkh(add, 1); // 3,9
add = 0;
foreach (twod[i, j]) begin
++add;
continue;
add += 100;
end
`checkh(add, 6);
foreach (twod[i, j]); // Null body check
str1 = "abcd";
str2 = "1234";
foreach (str1[i]) begin
str2[i] = str1[i];
end
if (str1 != str2) $stop;
str1 = "";
add = 0;
foreach(str1[i]) begin
add++;
end
`checkh(add, 0);
$write("*-* All Finished *-*\n");
$finish;
end
endmodule
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