libfpu.vhd

The GRLIB IP Library is an integrated set of reusable IP cores, designed for system-on-chip (SOC) de

    cpi_exack    	: in std_ulogic;			  -- FP exception acknowledge
    cpi_a_rs1  	: in std_logic_vector(4 downto 0);
    cpi_d_pc    : in std_logic_vector(31 downto 0);
    cpi_d_inst  : in std_logic_vector(31 downto 0);
    cpi_d_cnt   : in std_logic_vector(1 downto 0);
    cpi_d_trap  : in std_ulogic;
    cpi_d_annul : in std_ulogic;
    cpi_d_pv    : in std_ulogic;
    cpi_a_pc    : in std_logic_vector(31 downto 0);
    cpi_a_inst  : in std_logic_vector(31 downto 0);
    cpi_a_cnt   : in std_logic_vector(1 downto 0);
    cpi_a_trap  : in std_ulogic;
    cpi_a_annul : in std_ulogic;
    cpi_a_pv    : in std_ulogic;
    cpi_e_pc    : in std_logic_vector(31 downto 0);
    cpi_e_inst  : in std_logic_vector(31 downto 0);
    cpi_e_cnt   : in std_logic_vector(1 downto 0);
    cpi_e_trap  : in std_ulogic;
    cpi_e_annul : in std_ulogic;
    cpi_e_pv    : in std_ulogic;
    cpi_m_pc    : in std_logic_vector(31 downto 0);
    cpi_m_inst  : in std_logic_vector(31 downto 0);
    cpi_m_cnt   : in std_logic_vector(1 downto 0);
    cpi_m_trap  : in std_ulogic;
    cpi_m_annul : in std_ulogic;
    cpi_m_pv    : in std_ulogic;
    cpi_x_pc    : in std_logic_vector(31 downto 0);
    cpi_x_inst  : in std_logic_vector(31 downto 0);
    cpi_x_cnt   : in std_logic_vector(1 downto 0);
    cpi_x_trap  : in std_ulogic;
    cpi_x_annul : in std_ulogic;
    cpi_x_pv    : in std_ulogic;    
    cpi_lddata        : in std_logic_vector(31 downto 0);     -- load data
    cpi_dbg_enable : in std_ulogic;
    cpi_dbg_write  : in std_ulogic;
    cpi_dbg_fsr    : in std_ulogic;                            -- FSR access
    cpi_dbg_addr   : in std_logic_vector(4 downto 0);
    cpi_dbg_data   : in std_logic_vector(31 downto 0);
    cpi_ft_dis     : in std_ulogic;
    cpi_ft_ten     : in std_ulogic;
    cpi_ft_cb      : in std_logic_vector(6 downto 0);    
    cpi_ft_dpsel   : in std_ulogic;
    
    cpo_data          : out std_logic_vector(31 downto 0); -- store data
    cpo_exc  	        : out std_logic;			 -- FP exception
    cpo_cc           : out std_logic_vector(1 downto 0);  -- FP condition codes
    cpo_ccv  	       : out std_ulogic;			 -- FP condition codes valid
    cpo_ldlock       : out std_logic;			 -- FP pipeline hold
    cpo_holdn         : out std_ulogic;
    cpo_restart      : out std_ulogic;
    cpo_dbg_data     : out std_logic_vector(31 downto 0);
    cpo_dbg_par      : out std_logic_vector(6 downto 0);
    
    rfi1_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi1_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi1_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi1_wrdata 	: out std_logic_vector(31 downto 0);
    rfi1_wpar    	: out std_logic_vector(3 downto 0); 
    rfi1_wecb        : out std_logic_vector(6 downto 0);  
    rfi1_ren1        : out std_ulogic;			   
    rfi1_ren2        : out std_ulogic;
    rfi1_wren        : out std_ulogic;
    rfi1_inhw1       : out std_ulogic;
    rfi1_inhw2       : out std_ulogic;            
    rfi1_einj1       : out std_ulogic;
    rfi1_einj2       : out std_ulogic;
    
    rfi2_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi2_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi2_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi2_wrdata 	: out std_logic_vector(31 downto 0);
    rfi2_wpar    	: out std_logic_vector(3 downto 0); 
    rfi2_wecb        : out std_logic_vector(6 downto 0);      
    rfi2_ren1        : out std_ulogic;
    rfi2_ren2        : out std_ulogic;
    rfi2_wren        : out std_ulogic;
    rfi2_inhw1       : out std_ulogic;
    rfi2_inhw2       : out std_ulogic;        
    rfi2_einj1       : out std_ulogic;
    rfi2_einj2       : out std_ulogic;    

    rfo1_data1    	: in std_logic_vector(31 downto 0);
    rfo1_data2    	: in std_logic_vector(31 downto 0);
    rfo1_dpar1    	: in std_logic_vector(3 downto 0);
    rfo1_dpar2    	: in std_logic_vector(3 downto 0);
    rfo1_decb1    	: in std_logic_vector(6 downto 0);
    rfo1_decb2    	: in std_logic_vector(6 downto 0);
    
    rfo2_data1    	: in std_logic_vector(31 downto 0);
    rfo2_data2    	: in std_logic_vector(31 downto 0);
    rfo2_dpar1    	: in std_logic_vector(3 downto 0);
    rfo2_dpar2    	: in std_logic_vector(3 downto 0);
    rfo2_decb1    	: in std_logic_vector(6 downto 0);
    rfo2_decb2    	: in std_logic_vector(6 downto 0)        
    );
  end component;

  component mfpw 
  generic (pclow    : integer range 0 to 2 := 2;
           dsu      : integer range 0 to 1 := 0;           
           disas    : integer range 0 to 1 := 0
           );
  port (
    rst    : in  std_ulogic;			-- Reset
    clk    : in  std_ulogic;
    holdn  : in  std_ulogic;			-- pipeline hold
    cpi_flush  	: in std_ulogic;			  -- pipeline flush
    cpi_exack    	: in std_ulogic;			  -- FP exception acknowledge
    cpi_a_rs1  	: in std_logic_vector(4 downto 0);
    cpi_d_pc    : in std_logic_vector(31 downto 0);
    cpi_d_inst  : in std_logic_vector(31 downto 0);
    cpi_d_cnt   : in std_logic_vector(1 downto 0);
    cpi_d_trap  : in std_ulogic;
    cpi_d_annul : in std_ulogic;
    cpi_d_pv    : in std_ulogic;
    cpi_a_pc    : in std_logic_vector(31 downto 0);
    cpi_a_inst  : in std_logic_vector(31 downto 0);
    cpi_a_cnt   : in std_logic_vector(1 downto 0);
    cpi_a_trap  : in std_ulogic;
    cpi_a_annul : in std_ulogic;
    cpi_a_pv    : in std_ulogic;
    cpi_e_pc    : in std_logic_vector(31 downto 0);
    cpi_e_inst  : in std_logic_vector(31 downto 0);
    cpi_e_cnt   : in std_logic_vector(1 downto 0);
    cpi_e_trap  : in std_ulogic;
    cpi_e_annul : in std_ulogic;
    cpi_e_pv    : in std_ulogic;
    cpi_m_pc    : in std_logic_vector(31 downto 0);
    cpi_m_inst  : in std_logic_vector(31 downto 0);
    cpi_m_cnt   : in std_logic_vector(1 downto 0);
    cpi_m_trap  : in std_ulogic;
    cpi_m_annul : in std_ulogic;
    cpi_m_pv    : in std_ulogic;
    cpi_x_pc    : in std_logic_vector(31 downto 0);
    cpi_x_inst  : in std_logic_vector(31 downto 0);
    cpi_x_cnt   : in std_logic_vector(1 downto 0);
    cpi_x_trap  : in std_ulogic;
    cpi_x_annul : in std_ulogic;
    cpi_x_pv    : in std_ulogic;    
    cpi_lddata        : in std_logic_vector(31 downto 0);     -- load data
    cpi_dbg_enable : in std_ulogic;
    cpi_dbg_write  : in std_ulogic;
    cpi_dbg_fsr    : in std_ulogic;                            -- FSR access
    cpi_dbg_addr   : in std_logic_vector(4 downto 0);
    cpi_dbg_data   : in std_logic_vector(31 downto 0);

    cpo_data          : out std_logic_vector(31 downto 0); -- store data
    cpo_exc  	        : out std_logic;			 -- FP exception
    cpo_cc           : out std_logic_vector(1 downto 0);  -- FP condition codes
    cpo_ccv  	       : out std_ulogic;			 -- FP condition codes valid
    cpo_ldlock       : out std_logic;			 -- FP pipeline hold
    cpo_holdn         : out std_ulogic;
    cpo_dbg_data     : out std_logic_vector(31 downto 0);

    rfi1_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi1_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi1_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi1_wrdata 	: out std_logic_vector(31 downto 0);
    rfi1_ren1        : out std_ulogic;			   
    rfi1_ren2        : out std_ulogic;			   
    rfi1_wren        : out std_ulogic;			   
    
    rfi2_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi2_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi2_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi2_wrdata 	: out std_logic_vector(31 downto 0);
    rfi2_ren1        : out std_ulogic;
    rfi2_ren2        : out std_ulogic;			    
    rfi2_wren        : out std_ulogic;

    rfo1_data1    	: in std_logic_vector(31 downto 0);
    rfo1_data2    	: in std_logic_vector(31 downto 0);
    rfo2_data1    	: in std_logic_vector(31 downto 0);
    rfo2_data2    	: in std_logic_vector(31 downto 0)        
    );
    end component;

  
  component grfpw
  generic (infmul   : integer range 0 to 1 := 1;
           pclow    : integer range 0 to 2 := 2;
           dsu      : integer range 0 to 1 := 0;           
           disas    : integer range 0 to 1 := 0
           );
  port (
    rst    : in  std_ulogic;			-- Reset
    clk    : in  std_ulogic;
    holdn  : in  std_ulogic;			-- pipeline hold
    cpi_flush  	: in std_ulogic;			  -- pipeline flush
    cpi_exack    	: in std_ulogic;			  -- FP exception acknowledge
    cpi_a_rs1  	: in std_logic_vector(4 downto 0);
    cpi_d_pc    : in std_logic_vector(31 downto 0);
    cpi_d_inst  : in std_logic_vector(31 downto 0);
    cpi_d_cnt   : in std_logic_vector(1 downto 0);
    cpi_d_trap  : in std_ulogic;
    cpi_d_annul : in std_ulogic;
    cpi_d_pv    : in std_ulogic;
    cpi_a_pc    : in std_logic_vector(31 downto 0);
    cpi_a_inst  : in std_logic_vector(31 downto 0);
    cpi_a_cnt   : in std_logic_vector(1 downto 0);
    cpi_a_trap  : in std_ulogic;
    cpi_a_annul : in std_ulogic;
    cpi_a_pv    : in std_ulogic;
    cpi_e_pc    : in std_logic_vector(31 downto 0);
    cpi_e_inst  : in std_logic_vector(31 downto 0);
    cpi_e_cnt   : in std_logic_vector(1 downto 0);
    cpi_e_trap  : in std_ulogic;
    cpi_e_annul : in std_ulogic;
    cpi_e_pv    : in std_ulogic;
    cpi_m_pc    : in std_logic_vector(31 downto 0);
    cpi_m_inst  : in std_logic_vector(31 downto 0);
    cpi_m_cnt   : in std_logic_vector(1 downto 0);
    cpi_m_trap  : in std_ulogic;
    cpi_m_annul : in std_ulogic;
    cpi_m_pv    : in std_ulogic;
    cpi_x_pc    : in std_logic_vector(31 downto 0);
    cpi_x_inst  : in std_logic_vector(31 downto 0);
    cpi_x_cnt   : in std_logic_vector(1 downto 0);
    cpi_x_trap  : in std_ulogic;
    cpi_x_annul : in std_ulogic;
    cpi_x_pv    : in std_ulogic;    
    cpi_lddata        : in std_logic_vector(31 downto 0);     -- load data
    cpi_dbg_enable : in std_ulogic;
    cpi_dbg_write  : in std_ulogic;
    cpi_dbg_fsr    : in std_ulogic;                            -- FSR access
    cpi_dbg_addr   : in std_logic_vector(4 downto 0);
    cpi_dbg_data   : in std_logic_vector(31 downto 0);

    cpo_data          : out std_logic_vector(31 downto 0); -- store data
    cpo_exc  	        : out std_logic;			 -- FP exception
    cpo_cc           : out std_logic_vector(1 downto 0);  -- FP condition codes
    cpo_ccv  	       : out std_ulogic;			 -- FP condition codes valid
    cpo_ldlock       : out std_logic;			 -- FP pipeline hold
    cpo_holdn         : out std_ulogic;
    --cpo_restart      : out std_ulogic;
    cpo_dbg_data     : out std_logic_vector(31 downto 0);

    rfi1_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi1_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi1_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi1_wrdata 	: out std_logic_vector(31 downto 0);
    --rfi1_wpar    	: out std_logic_vector(3 downto 0); 
    --rfi1_wecb        : out std_logic_vector(6 downto 0);  
    rfi1_ren1        : out std_ulogic;			   
    rfi1_ren2        : out std_ulogic;			   
    rfi1_wren        : out std_ulogic;			   
    --rfi1_einj1       : out std_ulogic;
    --rfi1_einj2       : out std_ulogic;
    
    rfi2_rd1addr 	: out std_logic_vector(3 downto 0); 
    rfi2_rd2addr 	: out std_logic_vector(3 downto 0); 
    rfi2_wraddr 	: out std_logic_vector(3 downto 0); 
    rfi2_wrdata 	: out std_logic_vector(31 downto 0);
    rfi2_ren1        : out std_ulogic;
    rfi2_ren2        : out std_ulogic;			        
    --rfi2_wpar    	: out std_logic_vector(3 downto 0); 
    --rfi2_wecb        : out std_logic_vector(6 downto 0);      
    rfi2_wren        : out std_ulogic;
    --rfi2_einj1       : out std_ulogic;
    --rfi2_einj2       : out std_ulogic;    

    rfo1_data1    	: in std_logic_vector(31 downto 0);
    rfo1_data2    	: in std_logic_vector(31 downto 0);
    --rfo1_dpar1    	: in std_logic_vector(3 downto 0);
    --rfo1_dpar2    	: in std_logic_vector(3 downto 0);
    --rfo1_decb1    	: in std_logic_vector(6 downto 0);
    --rfo1_decb2    	: in std_logic_vector(6 downto 0);
    
    rfo2_data1    	: in std_logic_vector(31 downto 0);
    rfo2_data2    	: in std_logic_vector(31 downto 0)
    --rfo2_dpar1    	: in std_logic_vector(3 downto 0);
    --rfo2_dpar2    	: in std_logic_vector(3 downto 0);
    --rfo2_decb1    	: in std_logic_vector(6 downto 0);
    --rfo2_decb2    	: in std_logic_vector(6 downto 0)        
    );
  end component;

  component grfpwft
  generic (infmul   : integer range 0 to 1 := 1;
           pclow    : integer range 0 to 2 := 2;
           dsu      : integer range 0 to 1 := 0;           
           disas    : integer range 0 to 1 := 0;
           rfft     : integer range 0 to 2 := 0           
           );
  port (