diff options
Diffstat (limited to 'zpu/hdl/zpu4/src/txt_util.vhd')
| -rw-r--r-- | zpu/hdl/zpu4/src/txt_util.vhd | 852 |
1 files changed, 385 insertions, 467 deletions
diff --git a/zpu/hdl/zpu4/src/txt_util.vhd b/zpu/hdl/zpu4/src/txt_util.vhd index 6432294..4dca901 100644 --- a/zpu/hdl/zpu4/src/txt_util.vhd +++ b/zpu/hdl/zpu4/src/txt_util.vhd @@ -36,586 +36,504 @@ library ieee; use ieee.std_logic_1164.all; use std.textio.all; -library work; package txt_util is -- prints a message to the screen - procedure print(text: string); + procedure print(text : string); -- prints the message when active -- useful for debug switches - procedure print(active: boolean; text: string); + procedure print(active : boolean; text : string); -- converts std_logic into a character - function chr(sl: std_logic) return character; + function chr(sl : std_logic) return character; -- converts std_logic into a string (1 to 1) - function str(sl: std_logic) return string; + function str(sl : std_logic) return string; -- converts std_logic_vector into a string (binary base) - function str(slv: std_logic_vector) return string; + function str(slv : std_logic_vector) return string; -- converts boolean into a string - function str(b: boolean) return string; + function str(b : boolean) return string; -- converts an integer into a single character -- (can also be used for hex conversion and other bases) - function chr(int: integer) return character; + function chr(int : integer) return character; -- converts integer into string using specified base - function str(int: integer; base: integer) return string; + function str(int : integer; base : integer) return string; -- converts integer to string, using base 10 - function str(int: integer) return string; + function str(int : integer) return string; -- convert std_logic_vector into a string in hex format - function hstr(slv: std_logic_vector) return string; + function hstr(slv : std_logic_vector) return string; -- functions to manipulate strings ----------------------------------- -- convert a character to upper case - function to_upper(c: character) return character; + function to_upper(c : character) return character; -- convert a character to lower case - function to_lower(c: character) return character; + function to_lower(c : character) return character; -- convert a string to upper case - function to_upper(s: string) return string; + function to_upper(s : string) return string; -- convert a string to lower case - function to_lower(s: string) return string; + function to_lower(s : string) return string; + + - - -- functions to convert strings into other formats -------------------------------------------------- - + -- converts a character into std_logic - function to_std_logic(c: character) return std_logic; - + function to_std_logic(c : character) return std_logic; + -- converts a string into std_logic_vector - function to_std_logic_vector(s: string) return std_logic_vector; + function to_std_logic_vector(s : string) return std_logic_vector; + - -- file I/O ----------- - - -- read variable length string from input file - procedure str_read(file in_file: TEXT; - res_string: out string); - - -- print string to a file and start new line - procedure print(file out_file: TEXT; - new_string: in string); - - -- print character to a file and start new line - procedure print(file out_file: TEXT; - char: in character); - -end txt_util; - + -- read variable length string from input file + procedure str_read(file in_file : text; res_string : out string); + -- print string to a file and start new line + procedure print(file out_file : text; new_string : in string); -package body txt_util is + -- print character to a file and start new line + procedure print(file out_file : text; char : in character); +end package txt_util; - -- prints text to the screen - procedure print(text: string) is - variable msg_line: line; - begin - write(msg_line, text); - writeline(output, msg_line); - end print; +package body txt_util is + -- prints text to the screen + procedure print(text : string) is + variable msg_line : line; + begin + write(msg_line, text); + writeline(output, msg_line); + end procedure print; - -- prints text to the screen when active + -- prints text to the screen when active + procedure print(active : boolean; text : string) is + begin + if active then + print(text); + end if; + end procedure print; - procedure print(active: boolean; text: string) is - begin - if active then - print(text); - end if; - end print; + -- converts std_logic into a character + function chr(sl : std_logic) return character is + variable c : character; + begin + case sl is + when 'U' => c := 'U'; + when 'X' => c := 'X'; + when '0' => c := '0'; + when '1' => c := '1'; + when 'Z' => c := 'Z'; + when 'W' => c := 'W'; + when 'L' => c := 'L'; + when 'H' => c := 'H'; + when '-' => c := '-'; + end case; + return c; + end function chr; - -- converts std_logic into a character - function chr(sl: std_logic) return character is - variable c: character; - begin - case sl is - when 'U' => c:= 'U'; - when 'X' => c:= 'X'; - when '0' => c:= '0'; - when '1' => c:= '1'; - when 'Z' => c:= 'Z'; - when 'W' => c:= 'W'; - when 'L' => c:= 'L'; - when 'H' => c:= 'H'; - when '-' => c:= '-'; - end case; - return c; - end chr; - - - - -- converts std_logic into a string (1 to 1) - - function str(sl: std_logic) return string is - variable s: string(1 to 1); + -- converts std_logic into a string (1 to 1) + function str(sl : std_logic) return string is + variable s : string(1 to 1); begin s(1) := chr(sl); return s; - end str; + end function str; + -- converts std_logic_vector into a string (binary base) + -- (this also takes care of the fact that the range of + -- a string is natural while a std_logic_vector may + -- have an integer range) + function str(slv : std_logic_vector) return string is + variable result : string (1 to slv'length); + variable r : integer; + begin + r := 1; + for i in slv'range loop + result(r) := chr(slv(i)); + r := r + 1; + end loop; + return result; + end function str; - -- converts std_logic_vector into a string (binary base) - -- (this also takes care of the fact that the range of - -- a string is natural while a std_logic_vector may - -- have an integer range) - - function str(slv: std_logic_vector) return string is - variable result : string (1 to slv'length); - variable r : integer; - begin - r := 1; - for i in slv'range loop - result(r) := chr(slv(i)); - r := r + 1; - end loop; - return result; - end str; - - - function str(b: boolean) return string is + function str(b : boolean) return string is + begin + if b then + return "true"; + else + return "false"; + end if; + end function str; + + + -- converts an integer into a character + -- for 0 to 9 the obvious mapping is used, higher + -- values are mapped to the characters A-Z + -- (this is usefull for systems with base > 10) + -- (adapted from Steve Vogwell's posting in comp.lang.vhdl) + function chr(int : integer) return character is + variable c : character; begin - if b then - return "true"; - else - return "false"; - end if; - end str; - - - -- converts an integer into a character - -- for 0 to 9 the obvious mapping is used, higher - -- values are mapped to the characters A-Z - -- (this is usefull for systems with base > 10) - -- (adapted from Steve Vogwell's posting in comp.lang.vhdl) - - function chr(int: integer) return character is - variable c: character; - begin case int is - when 0 => c := '0'; - when 1 => c := '1'; - when 2 => c := '2'; - when 3 => c := '3'; - when 4 => c := '4'; - when 5 => c := '5'; - when 6 => c := '6'; - when 7 => c := '7'; - when 8 => c := '8'; - when 9 => c := '9'; - when 10 => c := 'A'; - when 11 => c := 'B'; - when 12 => c := 'C'; - when 13 => c := 'D'; - when 14 => c := 'E'; - when 15 => c := 'F'; - when 16 => c := 'G'; - when 17 => c := 'H'; - when 18 => c := 'I'; - when 19 => c := 'J'; - when 20 => c := 'K'; - when 21 => c := 'L'; - when 22 => c := 'M'; - when 23 => c := 'N'; - when 24 => c := 'O'; - when 25 => c := 'P'; - when 26 => c := 'Q'; - when 27 => c := 'R'; - when 28 => c := 'S'; - when 29 => c := 'T'; - when 30 => c := 'U'; - when 31 => c := 'V'; - when 32 => c := 'W'; - when 33 => c := 'X'; - when 34 => c := 'Y'; - when 35 => c := 'Z'; - when others => c := '?'; + when 0 => c := '0'; + when 1 => c := '1'; + when 2 => c := '2'; + when 3 => c := '3'; + when 4 => c := '4'; + when 5 => c := '5'; + when 6 => c := '6'; + when 7 => c := '7'; + when 8 => c := '8'; + when 9 => c := '9'; + when 10 => c := 'A'; + when 11 => c := 'B'; + when 12 => c := 'C'; + when 13 => c := 'D'; + when 14 => c := 'E'; + when 15 => c := 'F'; + when 16 => c := 'G'; + when 17 => c := 'H'; + when 18 => c := 'I'; + when 19 => c := 'J'; + when 20 => c := 'K'; + when 21 => c := 'L'; + when 22 => c := 'M'; + when 23 => c := 'N'; + when 24 => c := 'O'; + when 25 => c := 'P'; + when 26 => c := 'Q'; + when 27 => c := 'R'; + when 28 => c := 'S'; + when 29 => c := 'T'; + when 30 => c := 'U'; + when 31 => c := 'V'; + when 32 => c := 'W'; + when 33 => c := 'X'; + when 34 => c := 'Y'; + when 35 => c := 'Z'; + when others => c := '?'; end case; return c; - end chr; - - - - -- convert integer to string using specified base - -- (adapted from Steve Vogwell's posting in comp.lang.vhdl) - - function str(int: integer; base: integer) return string is - - variable temp: string(1 to 10); - variable num: integer; - variable abs_int: integer; - variable len: integer := 1; - variable power: integer := 1; - - begin + end function chr; - -- bug fix for negative numbers - abs_int := abs(int); - num := abs_int; - - while num >= base loop -- Determine how many - len := len + 1; -- characters required - num := num / base; -- to represent the - end loop ; -- number. - - for i in len downto 1 loop -- Convert the number to - temp(i) := chr(abs_int/power mod base); -- a string starting - power := power * base; -- with the right hand - end loop ; -- side. - - -- return result and add sign if required - if int < 0 then - return '-'& temp(1 to len); - else - return temp(1 to len); - end if; - - end str; - - - -- convert integer to string, using base 10 - function str(int: integer) return string is + -- convert integer to string using specified base + -- (adapted from Steve Vogwell's posting in comp.lang.vhdl) + function str(int : integer; base : integer) return string is + variable temp : string(1 to 10); + variable num : integer; + variable abs_int : integer; + variable len : integer := 1; + variable power : integer := 1; + begin - begin + -- bug fix for negative numbers + abs_int := abs(int); - return str(int, 10) ; + num := abs_int; - end str; + while num >= base loop -- Determine how many + len := len + 1; -- characters required + num := num / base; -- to represent the + end loop; -- number. + for i in len downto 1 loop -- Convert the number to + temp(i) := chr(abs_int/power mod base); -- a string starting + power := power * base; -- with the right hand + end loop; -- side. + -- return result and add sign if required + if int < 0 then + return '-'& temp(1 to len); + else + return temp(1 to len); + end if; - -- converts a std_logic_vector into a hex string. - function hstr(slv: std_logic_vector) return string is - variable hexlen: integer; - variable longslv : std_logic_vector(67 downto 0) := (others => '0'); - variable hex : string(1 to 16); - variable fourbit : std_logic_vector(3 downto 0); - begin - hexlen := (slv'left+1)/4; - if (slv'left+1) mod 4 /= 0 then - hexlen := hexlen + 1; - end if; - longslv(slv'left downto 0) := slv; - for i in (hexlen -1) downto 0 loop - fourbit := longslv(((i*4)+3) downto (i*4)); - case fourbit is - when "0000" => hex(hexlen -I) := '0'; - when "0001" => hex(hexlen -I) := '1'; - when "0010" => hex(hexlen -I) := '2'; - when "0011" => hex(hexlen -I) := '3'; - when "0100" => hex(hexlen -I) := '4'; - when "0101" => hex(hexlen -I) := '5'; - when "0110" => hex(hexlen -I) := '6'; - when "0111" => hex(hexlen -I) := '7'; - when "1000" => hex(hexlen -I) := '8'; - when "1001" => hex(hexlen -I) := '9'; - when "1010" => hex(hexlen -I) := 'A'; - when "1011" => hex(hexlen -I) := 'B'; - when "1100" => hex(hexlen -I) := 'C'; - when "1101" => hex(hexlen -I) := 'D'; - when "1110" => hex(hexlen -I) := 'E'; - when "1111" => hex(hexlen -I) := 'F'; - when "ZZZZ" => hex(hexlen -I) := 'z'; - when "UUUU" => hex(hexlen -I) := 'u'; - when "XXXX" => hex(hexlen -I) := 'x'; - when others => hex(hexlen -I) := '?'; - end case; - end loop; - return hex(1 to hexlen); - end hstr; + end function str; + -- convert integer to string, using base 10 + function str(int : integer) return string is + begin + return str(int, 10); + end function str; - -- functions to manipulate strings - ----------------------------------- + -- converts a std_logic_vector into a hex string. + function hstr(slv : std_logic_vector) return string is + variable hexlen : integer; + variable longslv : std_logic_vector(67 downto 0) := (others => '0'); + variable hex : string(1 to 16); + variable fourbit : std_logic_vector(3 downto 0); + begin + hexlen := (slv'left+1)/4; + if (slv'left+1) mod 4 /= 0 then + hexlen := hexlen + 1; + end if; + longslv(slv'left downto 0) := slv; + for i in (hexlen -1) downto 0 loop + fourbit := longslv(((i*4)+3) downto (i*4)); + case fourbit is + when "0000" => hex(hexlen -I) := '0'; + when "0001" => hex(hexlen -I) := '1'; + when "0010" => hex(hexlen -I) := '2'; + when "0011" => hex(hexlen -I) := '3'; + when "0100" => hex(hexlen -I) := '4'; + when "0101" => hex(hexlen -I) := '5'; + when "0110" => hex(hexlen -I) := '6'; + when "0111" => hex(hexlen -I) := '7'; + when "1000" => hex(hexlen -I) := '8'; + when "1001" => hex(hexlen -I) := '9'; + when "1010" => hex(hexlen -I) := 'A'; + when "1011" => hex(hexlen -I) := 'B'; + when "1100" => hex(hexlen -I) := 'C'; + when "1101" => hex(hexlen -I) := 'D'; + when "1110" => hex(hexlen -I) := 'E'; + when "1111" => hex(hexlen -I) := 'F'; + when "ZZZZ" => hex(hexlen -I) := 'z'; + when "UUUU" => hex(hexlen -I) := 'u'; + when "XXXX" => hex(hexlen -I) := 'x'; + when others => hex(hexlen -I) := '?'; + end case; + end loop; + return hex(1 to hexlen); + end function hstr; - -- convert a character to upper case - function to_upper(c: character) return character is - variable u: character; + -- functions to manipulate strings + ----------------------------------- + -- convert a character to upper case + function to_upper(c : character) return character is + variable u : character; begin + case c is + when 'a' => u := 'A'; + when 'b' => u := 'B'; + when 'c' => u := 'C'; + when 'd' => u := 'D'; + when 'e' => u := 'E'; + when 'f' => u := 'F'; + when 'g' => u := 'G'; + when 'h' => u := 'H'; + when 'i' => u := 'I'; + when 'j' => u := 'J'; + when 'k' => u := 'K'; + when 'l' => u := 'L'; + when 'm' => u := 'M'; + when 'n' => u := 'N'; + when 'o' => u := 'O'; + when 'p' => u := 'P'; + when 'q' => u := 'Q'; + when 'r' => u := 'R'; + when 's' => u := 'S'; + when 't' => u := 'T'; + when 'u' => u := 'U'; + when 'v' => u := 'V'; + when 'w' => u := 'W'; + when 'x' => u := 'X'; + when 'y' => u := 'Y'; + when 'z' => u := 'Z'; + when others => u := c; + end case; + return u; + end function to_upper; - case c is - when 'a' => u := 'A'; - when 'b' => u := 'B'; - when 'c' => u := 'C'; - when 'd' => u := 'D'; - when 'e' => u := 'E'; - when 'f' => u := 'F'; - when 'g' => u := 'G'; - when 'h' => u := 'H'; - when 'i' => u := 'I'; - when 'j' => u := 'J'; - when 'k' => u := 'K'; - when 'l' => u := 'L'; - when 'm' => u := 'M'; - when 'n' => u := 'N'; - when 'o' => u := 'O'; - when 'p' => u := 'P'; - when 'q' => u := 'Q'; - when 'r' => u := 'R'; - when 's' => u := 'S'; - when 't' => u := 'T'; - when 'u' => u := 'U'; - when 'v' => u := 'V'; - when 'w' => u := 'W'; - when 'x' => u := 'X'; - when 'y' => u := 'Y'; - when 'z' => u := 'Z'; - when others => u := c; - end case; - - return u; - - end to_upper; - - - -- convert a character to lower case - - function to_lower(c: character) return character is - - variable l: character; + -- convert a character to lower case + function to_lower(c : character) return character is + variable l : character; begin + case c is + when 'A' => l := 'a'; + when 'B' => l := 'b'; + when 'C' => l := 'c'; + when 'D' => l := 'd'; + when 'E' => l := 'e'; + when 'F' => l := 'f'; + when 'G' => l := 'g'; + when 'H' => l := 'h'; + when 'I' => l := 'i'; + when 'J' => l := 'j'; + when 'K' => l := 'k'; + when 'L' => l := 'l'; + when 'M' => l := 'm'; + when 'N' => l := 'n'; + when 'O' => l := 'o'; + when 'P' => l := 'p'; + when 'Q' => l := 'q'; + when 'R' => l := 'r'; + when 'S' => l := 's'; + when 'T' => l := 't'; + when 'U' => l := 'u'; + when 'V' => l := 'v'; + when 'W' => l := 'w'; + when 'X' => l := 'x'; + when 'Y' => l := 'y'; + when 'Z' => l := 'z'; + when others => l := c; + end case; + return l; + end function to_lower; - case c is - when 'A' => l := 'a'; - when 'B' => l := 'b'; - when 'C' => l := 'c'; - when 'D' => l := 'd'; - when 'E' => l := 'e'; - when 'F' => l := 'f'; - when 'G' => l := 'g'; - when 'H' => l := 'h'; - when 'I' => l := 'i'; - when 'J' => l := 'j'; - when 'K' => l := 'k'; - when 'L' => l := 'l'; - when 'M' => l := 'm'; - when 'N' => l := 'n'; - when 'O' => l := 'o'; - when 'P' => l := 'p'; - when 'Q' => l := 'q'; - when 'R' => l := 'r'; - when 'S' => l := 's'; - when 'T' => l := 't'; - when 'U' => l := 'u'; - when 'V' => l := 'v'; - when 'W' => l := 'w'; - when 'X' => l := 'x'; - when 'Y' => l := 'y'; - when 'Z' => l := 'z'; - when others => l := c; - end case; - - return l; - - end to_lower; - - - - -- convert a string to upper case - function to_upper(s: string) return string is + -- convert a string to upper case + function to_upper(s : string) return string is + variable uppercase : string (s'range); + begin - variable uppercase: string (s'range); + for i in s'range loop + uppercase(i) := to_upper(s(i)); + end loop; + return uppercase; - begin + end function to_upper; - for i in s'range loop - uppercase(i):= to_upper(s(i)); - end loop; - return uppercase; - end to_upper; + -- convert a string to lower case + function to_lower(s : string) return string is + variable lowercase : string (s'range); + begin + for i in s'range loop + lowercase(i) := to_lower(s(i)); + end loop; + return lowercase; + end function to_lower; - -- convert a string to lower case + -- functions to convert strings into other types + ------------------------------------------------ - function to_lower(s: string) return string is + -- converts a character into a std_logic + function to_std_logic(c : character) return std_logic is + variable sl : std_logic; + begin + case c is + when 'U' => + sl := 'U'; + when 'X' => + sl := 'X'; + when '0' => + sl := '0'; + when '1' => + sl := '1'; + when 'Z' => + sl := 'Z'; + when 'W' => + sl := 'W'; + when 'L' => + sl := 'L'; + when 'H' => + sl := 'H'; + when '-' => + sl := '-'; + when others => + sl := 'X'; + end case; + return sl; + end function to_std_logic; - variable lowercase: string (s'range); - begin + -- converts a string into std_logic_vector + function to_std_logic_vector(s : string) return std_logic_vector is + variable slv : std_logic_vector(s'high-s'low downto 0); + variable k : integer; + begin + k := s'high-s'low; + for i in s'range loop + slv(k) := to_std_logic(s(i)); + k := k - 1; + end loop; + return slv; + end function to_std_logic_vector; - for i in s'range loop - lowercase(i):= to_lower(s(i)); - end loop; - return lowercase; - end to_lower; + -- file I/O + ------------- + -- read variable length string from input file + procedure str_read(file in_file : text; res_string : out string) is + variable l : line; + variable c : character; + variable is_string : boolean; + begin + readline(in_file, l); + -- clear the contents of the result string + for i in res_string'range loop + res_string(i) := ' '; + end loop; + -- read all characters of the line, up to the length + -- of the results string + for i in res_string'range loop + read(l, c, is_string); + res_string(i) := c; + if not is_string then -- found end of line + exit; + end if; + end loop; + end procedure str_read; + + + -- print string to a file + procedure print(file out_file : text; new_string : in string) is + variable l : line; + begin + write(l, new_string); + writeline(out_file, l); + end procedure print; --- functions to convert strings into other types + -- print character to a file and start new line + procedure print(file out_file : text; char : in character) is + variable l : line; + begin + write(l, char); + writeline(out_file, l); + end procedure print; --- converts a character into a std_logic -function to_std_logic(c: character) return std_logic is - variable sl: std_logic; + -- appends contents of a string to a file until line feed occurs + -- (LF is considered to be the end of the string) + procedure str_write(file out_file : text; new_string : in string) is begin - case c is - when 'U' => - sl := 'U'; - when 'X' => - sl := 'X'; - when '0' => - sl := '0'; - when '1' => - sl := '1'; - when 'Z' => - sl := 'Z'; - when 'W' => - sl := 'W'; - when 'L' => - sl := 'L'; - when 'H' => - sl := 'H'; - when '-' => - sl := '-'; - when others => - sl := 'X'; - end case; - return sl; - end to_std_logic; - - --- converts a string into std_logic_vector - -function to_std_logic_vector(s: string) return std_logic_vector is - variable slv: std_logic_vector(s'high-s'low downto 0); - variable k: integer; -begin - k := s'high-s'low; - for i in s'range loop - slv(k) := to_std_logic(s(i)); - k := k - 1; - end loop; - return slv; -end to_std_logic_vector; - - - - - - ----------------- --- file I/O -- ----------------- - - - --- read variable length string from input file - -procedure str_read(file in_file: TEXT; - res_string: out string) is - - variable l: line; - variable c: character; - variable is_string: boolean; - - begin - - readline(in_file, l); - -- clear the contents of the result string - for i in res_string'range loop - res_string(i) := ' '; - end loop; - -- read all characters of the line, up to the length - -- of the results string - for i in res_string'range loop - read(l, c, is_string); - res_string(i) := c; - if not is_string then -- found end of line - exit; - end if; - end loop; - -end str_read; - - --- print string to a file -procedure print(file out_file: TEXT; - new_string: in string) is - - variable l: line; - - begin - - write(l, new_string); - writeline(out_file, l); - -end print; - - --- print character to a file and start new line -procedure print(file out_file: TEXT; - char: in character) is - - variable l: line; - - begin - - write(l, char); - writeline(out_file, l); - -end print; - - - --- appends contents of a string to a file until line feed occurs --- (LF is considered to be the end of the string) - -procedure str_write(file out_file: TEXT; - new_string: in string) is - begin - - for i in new_string'range loop - print(out_file, new_string(i)); - if new_string(i) = LF then -- end of string - exit; - end if; - end loop; - -end str_write; - - - - -end txt_util; - + for i in new_string'range loop + print(out_file, new_string(i)); + if new_string(i) = LF then -- end of string + exit; + end if; + end loop; + end procedure str_write; +end package body txt_util; |
