mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-06-06 06:03:23 +00:00
Code Activity

Fixes and cleanups for blackbox.v

Browse source
This commit is contained in:
Clifford Wolf 2014-09-08 13:29:13 +02:00
parent af0c8873bb
commit 6dc07eb1f2
2 changed files with 79 additions and 76 deletions
Download patch file Download diff file Expand all files Collapse all files

5
techlibs/common/blackbox.sed
View file

@ -1,4 +1,5 @@
#!/bin/sed -r #!/bin/sed -r
/^(wire|assign|reg|event)/ d; /^(wire|assign|reg|event|integer|localparam|\/\/|[\/ ]\*| *$|`)/ d;
/^(genvar|generate|always|initial)/,/^end/ d; /^(genvar|generate|always|initial|task|function)/,/^end/ d;
/^endmodule/ s/$/\n/;
s/ reg / /; s/ reg / /;

62
techlibs/common/simlib.v
View file

@ -795,21 +795,22 @@ endmodule
// -------------------------------------------------------- // --------------------------------------------------------
module \$macc (A, B, Y); module \$macc (A, B, Y);
parameter A_WIDTH = 0;
parameter B_WIDTH = 0;
parameter Y_WIDTH = 0;
parameter CONFIG = 4'b0000;
parameter CONFIG_WIDTH = 4;
input [A_WIDTH-1:0] A; parameter A_WIDTH = 0;
input [B_WIDTH-1:0] B; parameter B_WIDTH = 0;
output reg [Y_WIDTH-1:0] Y; parameter Y_WIDTH = 0;
parameter CONFIG = 4'b0000;
parameter CONFIG_WIDTH = 4;
localparam integer num_bits = CONFIG[3:0]; input [A_WIDTH-1:0] A;
localparam integer num_ports = (CONFIG_WIDTH-4) / (2 + 2*num_bits); input [B_WIDTH-1:0] B;
localparam integer num_abits = $clog2(A_WIDTH) > 0 ? $clog2(A_WIDTH) : 1; output reg [Y_WIDTH-1:0] Y;
function [2*num_ports*num_abits-1:0] get_port_offsets; localparam integer num_bits = CONFIG[3:0];
localparam integer num_ports = (CONFIG_WIDTH-4) / (2 + 2*num_bits);
localparam integer num_abits = $clog2(A_WIDTH) > 0 ? $clog2(A_WIDTH) : 1;
function [2*num_ports*num_abits-1:0] get_port_offsets;
input [CONFIG_WIDTH-1:0] cfg; input [CONFIG_WIDTH-1:0] cfg;
integer i, cursor; integer i, cursor;
begin begin
@ -822,21 +823,21 @@ module \$macc (A, B, Y);
cursor = cursor + cfg[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]; cursor = cursor + cfg[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits];
end end
end end
endfunction endfunction
localparam [2*num_ports*num_abits-1:0] port_offsets = get_port_offsets(CONFIG); localparam [2*num_ports*num_abits-1:0] port_offsets = get_port_offsets(CONFIG);
`define PORT_IS_SIGNED (0 + CONFIG[4 + i*(2 + 2*num_bits)]) `define PORT_IS_SIGNED (0 + CONFIG[4 + i*(2 + 2*num_bits)])
`define PORT_DO_SUBTRACT (0 + CONFIG[4 + i*(2 + 2*num_bits) + 1]) `define PORT_DO_SUBTRACT (0 + CONFIG[4 + i*(2 + 2*num_bits) + 1])
`define PORT_SIZE_A (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits]) `define PORT_SIZE_A (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 +: num_bits])
`define PORT_SIZE_B (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits]) `define PORT_SIZE_B (0 + CONFIG[4 + i*(2 + 2*num_bits) + 2 + num_bits +: num_bits])
`define PORT_OFFSET_A (0 + port_offsets[2*i*num_abits +: num_abits]) `define PORT_OFFSET_A (0 + port_offsets[2*i*num_abits +: num_abits])
`define PORT_OFFSET_B (0 + port_offsets[2*i*num_abits + num_abits +: num_abits]) `define PORT_OFFSET_B (0 + port_offsets[2*i*num_abits + num_abits +: num_abits])
integer i, j; integer i, j;
reg [Y_WIDTH-1:0] tmp_a, tmp_b; reg [Y_WIDTH-1:0] tmp_a, tmp_b;
always @* begin always @* begin
Y = 0; Y = 0;
for (i = 0; i < num_ports; i = i+1) for (i = 0; i < num_ports; i = i+1)
begin begin
@ -868,14 +869,15 @@ module \$macc (A, B, Y);
for (i = 0; i < B_WIDTH; i = i+1) begin for (i = 0; i < B_WIDTH; i = i+1) begin
Y = Y + B[i]; Y = Y + B[i];
end end
end end
`undef PORT_IS_SIGNED
`undef PORT_DO_SUBTRACT
`undef PORT_SIZE_A
`undef PORT_SIZE_B
`undef PORT_OFFSET_A
`undef PORT_OFFSET_B
`undef PORT_IS_SIGNED
`undef PORT_DO_SUBTRACT
`undef PORT_SIZE_A
`undef PORT_SIZE_B
`undef PORT_OFFSET_A
`undef PORT_OFFSET_B
endmodule endmodule
// -------------------------------------------------------- // --------------------------------------------------------