xref: /gem5/src/systemc/tests/systemc/misc/synth/concat/rvalue/test.cpp

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  test.cpp --

  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15

 *****************************************************************************/

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//
//	Verifies the functionality of concanetation operation.
//	Operands form the rvalue of an assignment
//
//	Author: PRP
//	Date Created: 19 Feb 99
//


#include "systemc.h"
#include "test.h"

void test::entry()
{
  sc_lv<8> a;
  sc_lv<8> b;
  sc_lv<8> c;
  sc_lv<8> d;
  sc_lv<24> e;
  sc_lv<24> f;

  sc_logic k;
  sc_logic n;
  sc_logic m;

  sc_lv<32> x;
  sc_lv<32> y;
  sc_lv<32> z;

  sc_lv<2> kk;

  int i,j;

  while (true) {

  wait ();

  // ------- rvalue ---------------------------------------------

  a = "00000000";  	// 0
  b = "00000001";	// 1
  c = "00000011";	// 3
  d = "00001111";	// 15
  e = "000000000000000000000001"; // 1
  f = "000000000000000000001010"; // 10

  // =============== Array + Array ====================================
  // array constant +  array constant
  x = ( sc_lv_base( "000000000000000000000000" ), "00010000");	// x = 32

  //  array constant +  array variable
  y = ("000000000000000000000000", b);	// y = 1
  z = x | y;	// z = 00000000 00000000 00000000 00010001

  //  array variable +  array constant
  x = (a, "000000000000000000000011");	// x = 3
  z = z & x;	// z = 00000000 00000000 00000000 00000001

  //  array variable +  array variable
  x = (a, f);	// x = 10
  z = z | x;	// z = 00000000 00000000 00000000 00001011

  // =============== Cascading ====================================
  // cascading  array variables
  x = (a, b, c, d);	// x = 00000000 00000001 00000011 00001111
  z = z & x;		// z = 00000000 00000000 00000000 00001011

  // cascading  array constants
  x = ( sc_lv_base( "00000011" ), "00000011", "00000011", "00000011");
  		// x = 00000011 00000011 00000011 00000011
  z = z | x;	// z = 00000011 00000011 00000011 00001011

  // composing  array concats
  x = ( sc_lv_base( "00000011" ), ( sc_lv_base( "11111111" ), "00000011", "00000011"));
  		// x = 00000011 11111111 00000011 00000011
  z = z | x;	// z = 00000011 11111111 00000011 00001011

  // =============== Array (variable) + Scalar ==============================
  // array variable + scalar constant
  m = '0';
  n = '1';
  x = (a, b, c, d.range (6, 0), m);
		// x = 00000000 00000001 00000011 00011110
  z = z | x;	// z = 00000011 11111111 00000011 00011111

  k = '1';
  // array variable + scalar variable
  x = (a, b, k, c.range (6, 0), x.range (7, 0));
		// x = 00000000 00000001 10000001 00011110
  z = z & x;	// z = 00000000 00000001 00000001 00011110

  // =============== Null Vector ====================================
  // null vector - variable
  kk = ~( sc_lv_base( k ), k); // "00"
  z = (z.range (31, 2), kk);	// z = 00000000 00000001 00000001 00011100

  // null vector - constant
  kk = ( sc_lv_base( n ), n); // "11"
  z = (kk, z.range (29, 0));	// z = 11000000 00000001 00000001 00011100

  // =============== Array (constant) + Scalar ==============================
  // scalar constant + array constant
  x = ( sc_lv_base( n ), "1111111000000000000000000000011");
		// x = 01111111 00000000 00000000 00000011
  z = z | x;	// z = 11111111 00000001 00000001 00011111

  // array constant + scalar variable
  x = ( sc_lv_base( "1111111000000000000000000000011" ), k);
		// x = 11111110 00000000 00000000 00000111
  z = z & x;	// z = 11111110 00000000 00000000 00000111

  // =============== LHS/RHS of different widths ==============================
  // lhs and rhs of different widths
  x = "100001111000000000000000000001111"; // warning should be issued
  z = z & x;
	// z = 00001110 00000000 00000000 00000111

  o1 = z.to_int();
  wait();

  }
}