Subversion Repositories vhld_tb

-------------------------------------------------------------------------------

--             Copyright 2007  Ken Campbell

-------------------------------------------------------------------------------

-- $Author: sckoarn $

--

-- $Date: 2007-08-21 02:43:14 $

--

-- $Name: not supported by cvs2svn $

--

-- $Id: tb_pkg_header.vhd,v 1.2 2007-08-21 02:43:14 sckoarn Exp $

--

-- $Source: /home/marcus/revision_ctrl_test/oc_cvs/cvs/vhld_tb/source/tb_pkg_header.vhd,v $

--

-- Description :  The the testbench package header file.

--                Initial GNU release.

--

------------------------------------------------------------------------------

--This file is part of The VHDL Test Bench.

--

--    The VHDL Test Bench is free software; you can redistribute it and/or modify

--    it under the terms of the GNU General Public License as published by

--    the Free Software Foundation; either version 2 of the License, or

--    (at your option) any later version.

--

--    Foobar is distributed in the hope that it will be useful,

--    but WITHOUT ANY WARRANTY; without even the implied warranty of

--    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

--    GNU General Public License for more details.

--

--    You should have received a copy of the GNU General Public License

--    along with The VHDL Test Bench; if not, write to the Free Software

--    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

-------------------------------------------------------------------------------

-- Revision History:

-- $Log: not supported by cvs2svn $

-- Revision 1.1.1.1  2007/04/06 04:06:48  sckoarn

-- Import of the vhld_tb

--

--

-------------------------------------------------------------------------------

library IEEE;

use IEEE.STD_LOGIC_1164.all;

use IEEE.STD_LOGIC_ARITH.all;

use std.textio.all;

library ieee_proposed;

use ieee_proposed.STD_LOGIC_1164_additions.all;

package tb_pkg is

  -- Constants

  constant max_str_len   : integer := 256;

  constant max_field_len : integer := 48;

  constant c_stm_text_len  : integer := 128;

  -- file handles

  file stimulus     : text;             -- file main file

  file include_file : text;             -- file declaration for includes

  -- Type Def's

  type base is (bin, oct, hex, dec);

--  subtype stack_element is integer range 0 to 8192;

  type stack_register is array(7 downto 0) of integer;

  type state_register is array(7 downto 0) of boolean;

  type int_array      is array(1 to 16) of integer;

  subtype text_line  is string(1 to max_str_len);

  subtype text_field is string(1 to max_field_len);

  subtype stm_text is string(1 to c_stm_text_len);

  type stm_text_ptr is access stm_text;

  -- define the stimulus line record and access

  type stim_line;

  type stim_line_ptr is access stim_line;     -- Pointer to stim_line record

  type stim_line is record

    instruction:   text_field;

    inst_field_1:  text_field;

    inst_field_2:  text_field;

    inst_field_3:  text_field;

    inst_field_4:  text_field;

    inst_field_5:  text_field;

    inst_field_6:  text_field;

    txt:           stm_text_ptr;

    line_number:   integer;      -- sequence line

    num_of_lines:  integer;      -- total number of lines

    file_line:     integer;      -- file line number

    file_name:     text_line;

    next_rec:      stim_line_ptr;

  end record;

  -- define the variables field and pointer

  type var_field;

  type var_field_ptr is access var_field;  -- pointer to var_field

  type var_field is record

    var_name:     text_field;

    var_index:    integer;

    var_value:    integer;

    next_rec:     var_field_ptr;

  end record;

  -- define the instruction structure

  type inst_def;

  type inst_def_ptr is access inst_def;

  type inst_def is record

    instruction:     text_field;

    instruction_l:   integer;

    params:          integer;

    next_rec:        inst_def_ptr;

  end record;

---*****************************************************************************

  -- Function Declaration

--  function str_len(variable line: text_line) return text_field;

--  function fld_len(s : in text_field) integer;

    function ew_to_slv(value : in integer;

                       length : in integer) return std_logic_vector;

    function c2std_vec(c: in character) return std_logic_vector;

--------------------------------------------------------------------------------

  -- Procedure declarations

--------------------------------------------------------------------------

-- define_instruction

--    inputs     file_name  the file to be read from

--

--    output     file_line  a line of text from the file

  procedure define_instruction(variable inst_set: inout inst_def_ptr;

                               constant inst:     in    string;

                               constant args:     in    integer);

--------------------------------------------------------------------------------

--  index_variable

--     inputs:

--               index:  the index of the variable being accessed

--     outputs:

--               Variable Value

--               valid  is 1 if valid 0 if not

  procedure index_variable(variable var_list : in  var_field_ptr;

                           variable index    : in  integer;

                           variable value    : out integer;

                           variable valid    : out integer);

--------------------------------------------------------------------------------

--  update_variable

--     inputs:

--               index:  the index of the variable being accessed

--     outputs:

--               Variable Value

--               valid  is 1 if valid 0 if not

  procedure update_variable(variable var_list : in  var_field_ptr;

                            variable index    : in  integer;

                            variable value    : in  integer;

                            variable valid    : out integer);

-------------------------------------------------------------------------------

-- read_instruction_file

--  This procedure reads the instruction file, name passed throught file_name.

--  Pointers to records are passed in and out.  A table of variables is created

--  with variable name and value (converted to integer).  The instructions are

--  parsesed into the inst_sequ list.  Instructions are validated against the

--  inst_set which must have been set up prior to loading the instruction file.

  procedure read_instruction_file(constant file_name:  string;

                                  variable inst_set:   inout inst_def_ptr;

                                  variable var_list:   inout var_field_ptr;

                                  variable inst_sequ:  inout stim_line_ptr);

------------------------------------------------------------------------------

-- access_inst_sequ

--   This procedure retreeves an instruction from the sequence of instructions.

--   Based on the line number you pass to it, it returns the instruction with

--   any variables substituted as integers.

  procedure access_inst_sequ(variable inst_sequ  :  in  stim_line_ptr;

                             variable var_list   :  in  var_field_ptr;

                             variable sequ_num   :  in  integer;

                             variable inst       :  out text_field;

                             variable p1         :  out integer;

                             variable p2         :  out integer;

                             variable p3         :  out integer;

                             variable p4         :  out integer;

                             variable p5         :  out integer;

                             variable p6         :  out integer;

                             variable txt        :  out stm_text_ptr;

                             variable inst_len   :  out integer;

                             variable fname      :  out text_line;

                             variable file_line  :  out integer

                             );

------------------------------------------------------------------------

--  tokenize_line

--    This procedure takes a type text_line in and returns up to 6

--    tokens and the count in integer valid, as well if text string

--    is found the pointer to that is returned.

  procedure tokenize_line(variable text_line:   in  text_line;

                          variable token1:      out text_field;

                          variable token2:      out text_field;

                          variable token3:      out text_field;

                          variable token4:      out text_field;

                          variable token5:      out text_field;

                          variable token6:      out text_field;

                          variable token7:      out text_field;

                          variable txt_ptr:     out stm_text_ptr;

                          variable valid:       out integer);

-------------------------------------------------------------------------

-- string convertion

  function ew_to_str(int: integer; b: base) return text_field;

  function to_str(int: integer) return string;

-------------------------------------------------------------------------

--  Procedre print

--    print to stdout  string

  procedure print(s: in string);

-------------------------------------------------------------------------

--  Procedure print stim txt

  procedure txt_print(variable ptr: in stm_text_ptr);

-------------------------------------------------------------------------

--  Procedure print stim txt sub variables found

  procedure txt_print_wvar(variable var_list   :  in  var_field_ptr;

                           variable ptr        :  in  stm_text_ptr;

                           constant b          :  in  base);

-------------------------------------------------------------------------

-- dump inst_sequ

--  This procedure dumps to the simulation window the current instruction

--  sequence.  The whole thing will be dumped, which could be big.

--   ** intended for testbench development debug**

  procedure dump_inst_sequ(variable inst_sequ  :  in  stim_line_ptr);

end tb_pkg;