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// DESCRIPTION: Verilator: Verilog Test module
//
// Copyright 2009 by Wilson Snyder. This program is free software; you can
// redistribute it and/or modify it under the terms of either the GNU
// Lesser General Public License Version 3 or the Perl Artistic License
// Version 2.0.
// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
module t ();
sub a (.inst(1));
sub b (.inst(2));
initial begin
a.test1;
b.test1;
a.test2;
b.test2;
$write("*-* All Finished *-*\n");
$finish;
end
import "DPI-C" context function void dpic_final();
final dpic_final();
endmodule
module sub (input integer inst);
import "DPI-C" context function int dpic_line();
import "DPI-C" context function int dpic_save(int value);
import "DPI-C" context function int dpic_restore();
import "DPI-C" context function int unsigned dpic_getcontext();
int result;
// Exports here are only to cover the export dumper of Verilated::internalsDump
export "DPI-C" function dpix_void;
function void dpix_void;
endfunction
export "DPI-C" function dpix_result;
function int dpix_result;
return result;
endfunction
task test1;
// Check line numbering
`ifndef verilator // Not all sims support SV2009 `__LINE__, and some that do fail the specific-line test
result = dpic_line(); if (!result) $stop;
`else
result = dpic_line(); if (result !== `__LINE__) $stop;
//
result = dpic_line(); if (result !== `__LINE__) $stop;
`endif
// Check save-restore
result = dpic_save(23+inst);
if (result==0) $stop;
endtask
task test2;
if (dpic_restore() != 23+inst) $stop;
endtask
int unsigned cntxt1;
int unsigned cntxt2;
initial begin
cntxt1 = dpic_getcontext();
begin : caller_context
// call from a different scope - should still get the context of the function declaration
cntxt2 = dpic_getcontext();
end
// svContext should be the context of the function declaration, not the context of the function call
if (cntxt1 != cntxt2) $stop;
end
endmodule
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