mirror of
https://github.com/verilator/verilator.git
synced 2026-10-06 10:03:44 +02:00
88 lines
2.1 KiB
Systemverilog
88 lines
2.1 KiB
Systemverilog
// DESCRIPTION: Verilator: System Verilog test of array querying functions.
|
|
//
|
|
// This code instantiates a module that calls the various array querying
|
|
// functions.
|
|
//
|
|
// This file ONLY is placed under the Creative Commons Public Domain.
|
|
// SPDX-FileCopyrightText: 2012 Jeremy Bennett, Embecosm
|
|
// SPDX-License-Identifier: CC0-1.0
|
|
|
|
// verilog_format: off
|
|
`define stop $stop
|
|
`define checkd(gotv,expv) do if ((gotv) != (expv)) begin $write("%%Error: %s:%0d: got=%0d exp=%0d\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
|
|
// verilog_format: on
|
|
|
|
module t (
|
|
input clk
|
|
);
|
|
|
|
wire a = clk;
|
|
wire b = 1'b0;
|
|
reg c;
|
|
|
|
array_test array_test_i ( /*AUTOINST*/
|
|
// Inputs
|
|
.clk(clk)
|
|
);
|
|
|
|
endmodule
|
|
|
|
|
|
// Check the array sizing functions work correctly.
|
|
module array_test #(
|
|
parameter LEFT = 5,
|
|
RIGHT = 55
|
|
) ( /*AUTOARG*/
|
|
// Inputs
|
|
clk
|
|
);
|
|
|
|
input clk;
|
|
|
|
// verilator lint_off ASCRANGE
|
|
reg [7:0] a[LEFT:RIGHT];
|
|
// verilator lint_on ASCRANGE
|
|
|
|
typedef reg [7:0] r_t;
|
|
typedef r_t array_t[LEFT:RIGHT];
|
|
|
|
task automatic query_dimensions(input int dimension, output int left_bound, right_bound,
|
|
array_size);
|
|
// verilator no_inline_task
|
|
left_bound = $left(array_t, dimension);
|
|
right_bound = $right(array_t, dimension);
|
|
array_size = $size(array_t, dimension);
|
|
endtask
|
|
|
|
integer l;
|
|
integer r;
|
|
integer s;
|
|
int cycle = 0;
|
|
|
|
always @(posedge clk) begin
|
|
l = $left(a);
|
|
r = $right(a);
|
|
s = $size(a);
|
|
|
|
`ifdef TEST_VERBOSE
|
|
$write("$left (a) = %d, $right (a) = %d, $size (a) = %d\n", l, r, s);
|
|
`endif
|
|
|
|
if ((l != LEFT) || (r != RIGHT) || (s != (RIGHT - LEFT + 1))) $stop;
|
|
if ($left(r_t) != 7 || $right(r_t) != 0 || $size(r_t) != 8 || $bits(r_t) != 8) $stop;
|
|
|
|
// A runtime dimension selects entries in compiler-generated constant tables.
|
|
query_dimensions(cycle[0] ? 2 : 1, l, r, s);
|
|
`checkd(l, cycle[0] ? 7 : LEFT);
|
|
`checkd(r, cycle[0] ? 0 : RIGHT);
|
|
`checkd(s, cycle[0] ? 8 : RIGHT - LEFT + 1);
|
|
|
|
cycle <= cycle + 1;
|
|
if (cycle == 3) begin
|
|
$write("*-* All Finished *-*\n");
|
|
$finish;
|
|
end
|
|
end
|
|
|
|
endmodule
|