| Line 70... |
Line 70... |
input cyc_i;
|
input cyc_i;
|
input stb_i;
|
input stb_i;
|
output ack_o;
|
output ack_o;
|
input we_i;
|
input we_i;
|
input [15:0] adr_i;
|
input [15:0] adr_i;
|
input [31:0] dat_i;
|
input [47:0] dat_i;
|
input [2:0] cmpgrp;
|
input [2:0] cmpgrp;
|
input freezePC;
|
input freezePC;
|
input thread_en;
|
input thread_en;
|
input [4:0] regLR;
|
input [4:0] regLR;
|
input [47:0] insn0;
|
input [47:0] insn0;
|
| Line 112... |
Line 112... |
output reg [AMSB:0] fetchbufD_pc;
|
output reg [AMSB:0] fetchbufD_pc;
|
output [47:0] fetchbuf0_instr;
|
output [47:0] fetchbuf0_instr;
|
output [47:0] fetchbuf1_instr;
|
output [47:0] fetchbuf1_instr;
|
output [AMSB:0] fetchbuf0_pc;
|
output [AMSB:0] fetchbuf0_pc;
|
output [AMSB:0] fetchbuf1_pc;
|
output [AMSB:0] fetchbuf1_pc;
|
output reg [3:0] fetchbuf0_insln;
|
output [2:0] fetchbuf0_insln;
|
output reg [3:0] fetchbuf1_insln;
|
output [2:0] fetchbuf1_insln;
|
output fetchbuf0_v;
|
output fetchbuf0_v;
|
output fetchbuf1_v;
|
output fetchbuf1_v;
|
input [47:0] codebuf0;
|
input [47:0] codebuf0;
|
input [47:0] codebuf1;
|
input [47:0] codebuf1;
|
input [AMSB:0] btgtA;
|
input [AMSB:0] btgtA;
|
| Line 162... |
Line 162... |
function IsRTI;
|
function IsRTI;
|
input [47:0] isn;
|
input [47:0] isn;
|
IsRTI = isn[`INSTRUCTION_OP]==`R2 && isn[`INSTRUCTION_S2]==`RTI;
|
IsRTI = isn[`INSTRUCTION_OP]==`R2 && isn[`INSTRUCTION_S2]==`RTI;
|
endfunction
|
endfunction
|
|
|
function [3:0] fnInsLength;
|
function [2:0] fnInsLength;
|
input [47:0] ins;
|
input [47:0] ins;
|
if (ins[`INSTRUCTION_OP]==`CMPRSSD)
|
if (ins[`INSTRUCTION_OP]==`CMPRSSD)
|
fnInsLength = 4'd2;
|
fnInsLength = 3'd2;
|
else
|
else
|
case(ins[7:6])
|
case(ins[7:6])
|
2'd0: fnInsLength = 4'd4;
|
2'd0: fnInsLength = 3'd4;
|
2'd1: fnInsLength = 4'd6;
|
2'd1: fnInsLength = 3'd6;
|
default: fnInsLength = 4'd2;
|
default: fnInsLength = 3'd2;
|
endcase
|
endcase
|
endfunction
|
endfunction
|
|
|
|
wire [2:0] fetchbufA_inslen;
|
|
wire [2:0] fetchbufB_inslen;
|
|
wire [2:0] fetchbufC_inslen;
|
|
wire [2:0] fetchbufD_inslen;
|
|
FT64_InsLength uilA (fetchbufA_instr, fetchbufA_inslen);
|
|
FT64_InsLength uilB (fetchbufB_instr, fetchbufB_inslen);
|
|
FT64_InsLength uilC (fetchbufC_instr, fetchbufC_inslen);
|
|
FT64_InsLength uilD (fetchbufD_instr, fetchbufD_inslen);
|
|
|
wire [47:0] xinsn0;
|
wire [47:0] xinsn0;
|
wire [47:0] xinsn1;
|
wire [47:0] xinsn1;
|
|
|
FT64_iexpander ux1
|
FT64_iexpander ux1
|
| Line 197... |
Line 205... |
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
assign ack_o = cs_i & cyc_i & stb_i;
|
assign ack_o = cs_i & cyc_i & stb_i;
|
reg [47:0] DecompressTable [0:2047];
|
reg [47:0] DecompressTable [0:2047];
|
always @(posedge clk)
|
always @(posedge clk)
|
if (cs_i & cyc_i & stb_i & we_i)
|
if (cs_i & cyc_i & stb_i & we_i)
|
DecompressTable[adr_i[12:3]] <= dat_i;
|
DecompressTable[adr_i[12:3]] <= dat_i[47:0];
|
wire [47:0] expand0 = DecompressTable[{cmpgrp,insn0[15:8]}];
|
wire [47:0] expand0 = DecompressTable[{cmpgrp,insn0[15:8]}];
|
wire [47:0] expand1 = DecompressTable[{cmpgrp,insn1[15:8]}];
|
wire [47:0] expand1 = DecompressTable[{cmpgrp,insn1[15:8]}];
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
| Line 226... |
Line 234... |
case(fetchbufA_instr[`INSTRUCTION_OP])
|
case(fetchbufA_instr[`INSTRUCTION_OP])
|
`RET: branch_pcA = retpc0;
|
`RET: branch_pcA = retpc0;
|
`JMP,`CALL: branch_pcA = fetchbufA_instr[6] ? {fetchbufA_instr[39:8],1'b0} : {fetchbufA_pc[31:25],fetchbufA_instr[31:8],1'b0};
|
`JMP,`CALL: branch_pcA = fetchbufA_instr[6] ? {fetchbufA_instr[39:8],1'b0} : {fetchbufA_pc[31:25],fetchbufA_instr[31:8],1'b0};
|
`R2: branch_pcA = btgtA; // RTI
|
`R2: branch_pcA = btgtA; // RTI
|
`BRK,`JAL: branch_pcA = btgtA;
|
`BRK,`JAL: branch_pcA = btgtA;
|
default: branch_pcA = fetchbufA_pc + {{20{fetchbufA_instr[31]}},fetchbufA_instr[31:21],1'b0} + fnInsLength(fetchbufA_instr);
|
default: branch_pcA = fetchbufA_pc + {{20{fetchbufA_instr[31]}},fetchbufA_instr[31:21],1'b0} + fetchbufA_inslen;
|
endcase
|
endcase
|
|
|
always @*
|
always @*
|
case(fetchbufB_instr[`INSTRUCTION_OP])
|
case(fetchbufB_instr[`INSTRUCTION_OP])
|
`RET: branch_pcB = retpc1;
|
`RET: branch_pcB = retpc1;
|
`JMP,`CALL: branch_pcB = fetchbufB_instr[6] ? {fetchbufB_instr[39:8],1'b0} : {fetchbufB_pc[31:25],fetchbufB_instr[31:8],1'b0};
|
`JMP,`CALL: branch_pcB = fetchbufB_instr[6] ? {fetchbufB_instr[39:8],1'b0} : {fetchbufB_pc[31:25],fetchbufB_instr[31:8],1'b0};
|
`R2: branch_pcB = btgtB; // RTI
|
`R2: branch_pcB = btgtB; // RTI
|
`BRK,`JAL: branch_pcB = btgtB;
|
`BRK,`JAL: branch_pcB = btgtB;
|
default: branch_pcB = fetchbufB_pc + {{20{fetchbufB_instr[31]}},fetchbufB_instr[31:21],1'b0} + fnInsLength(fetchbufB_instr);
|
default: branch_pcB = fetchbufB_pc + {{20{fetchbufB_instr[31]}},fetchbufB_instr[31:21],1'b0} + fetchbufB_inslen;
|
endcase
|
endcase
|
|
|
always @*
|
always @*
|
case(fetchbufC_instr[`INSTRUCTION_OP])
|
case(fetchbufC_instr[`INSTRUCTION_OP])
|
`RET: branch_pcC = retpc0;
|
`RET: branch_pcC = retpc0;
|
`JMP,`CALL: branch_pcC = fetchbufC_instr[6] ? {fetchbufC_instr[39:8],1'b0} : {fetchbufC_pc[31:25],fetchbufC_instr[31:8],1'b0};
|
`JMP,`CALL: branch_pcC = fetchbufC_instr[6] ? {fetchbufC_instr[39:8],1'b0} : {fetchbufC_pc[31:25],fetchbufC_instr[31:8],1'b0};
|
`R2: branch_pcC = btgtC; // RTI
|
`R2: branch_pcC = btgtC; // RTI
|
`BRK,`JAL: branch_pcC = btgtC;
|
`BRK,`JAL: branch_pcC = btgtC;
|
default: branch_pcC = fetchbufC_pc + {{20{fetchbufC_instr[31]}},fetchbufC_instr[31:21],1'b0} + fnInsLength(fetchbufC_instr);
|
default: branch_pcC = fetchbufC_pc + {{20{fetchbufC_instr[31]}},fetchbufC_instr[31:21],1'b0} + fetchbufC_inslen;
|
endcase
|
endcase
|
|
|
always @*
|
always @*
|
case(fetchbufD_instr[`INSTRUCTION_OP])
|
case(fetchbufD_instr[`INSTRUCTION_OP])
|
`RET: branch_pcD = retpc1;
|
`RET: branch_pcD = retpc1;
|
`JMP,`CALL: branch_pcD = fetchbufD_instr[6] ? {fetchbufD_instr[39:8],1'b0} : {fetchbufD_pc[31:25],fetchbufD_instr[31:8],1'b0};
|
`JMP,`CALL: branch_pcD = fetchbufD_instr[6] ? {fetchbufD_instr[39:8],1'b0} : {fetchbufD_pc[31:25],fetchbufD_instr[31:8],1'b0};
|
`R2: branch_pcD = btgtD; // RTI
|
`R2: branch_pcD = btgtD; // RTI
|
`BRK,`JAL: branch_pcD = btgtD;
|
`BRK,`JAL: branch_pcD = btgtD;
|
default: branch_pcD = fetchbufD_pc + {{20{fetchbufD_instr[31]}},fetchbufD_instr[31:21],1'b0} + fnInsLength(fetchbufD_instr);
|
default: branch_pcD = fetchbufD_pc + {{20{fetchbufD_instr[31]}},fetchbufD_instr[31:21],1'b0} + fetchbufD_inslen;
|
endcase
|
endcase
|
|
|
wire take_branchA = ({fetchbufA_v, IsBranch(fetchbufA_instr), predict_takenA} == {`VAL, `TRUE, `TRUE}) ||
|
wire take_branchA = ({fetchbufA_v, IsBranch(fetchbufA_instr), predict_takenA} == {`VAL, `TRUE, `TRUE}) ||
|
((IsRet(fetchbufA_instr)||IsJmp(fetchbufA_instr)||IsCall(fetchbufA_instr)||
|
((IsRet(fetchbufA_instr)||IsJmp(fetchbufA_instr)||IsCall(fetchbufA_instr)||
|
IsRTI(fetchbufA_instr)|| fetchbufA_instr[`INSTRUCTION_OP]==`BRK || fetchbufA_instr[`INSTRUCTION_OP]==`JAL) &&
|
IsRTI(fetchbufA_instr)|| fetchbufA_instr[`INSTRUCTION_OP]==`BRK || fetchbufA_instr[`INSTRUCTION_OP]==`JAL) &&
|
| Line 791... |
Line 799... |
if (nop_fetchbuf[2]) fetchbufC_v <= `INV;
|
if (nop_fetchbuf[2]) fetchbufC_v <= `INV;
|
if (nop_fetchbuf[3]) fetchbufD_v <= `INV;
|
if (nop_fetchbuf[3]) fetchbufD_v <= `INV;
|
end
|
end
|
|
|
assign fetchbuf0_instr = (fetchbuf == 1'b0) ? fetchbufA_instr : fetchbufC_instr;
|
assign fetchbuf0_instr = (fetchbuf == 1'b0) ? fetchbufA_instr : fetchbufC_instr;
|
|
assign fetchbuf0_insln = (fetchbuf == 1'b0) ? fetchbufA_inslen: fetchbufC_inslen;
|
assign fetchbuf0_v = (fetchbuf == 1'b0) ? fetchbufA_v : fetchbufC_v ;
|
assign fetchbuf0_v = (fetchbuf == 1'b0) ? fetchbufA_v : fetchbufC_v ;
|
assign fetchbuf0_pc = (fetchbuf == 1'b0) ? fetchbufA_pc : fetchbufC_pc ;
|
assign fetchbuf0_pc = (fetchbuf == 1'b0) ? fetchbufA_pc : fetchbufC_pc ;
|
assign fetchbuf1_instr = (fetchbuf == 1'b0) ? fetchbufB_instr : fetchbufD_instr;
|
assign fetchbuf1_instr = (fetchbuf == 1'b0) ? fetchbufB_instr : fetchbufD_instr;
|
|
assign fetchbuf1_insln = (fetchbuf == 1'b0) ? fetchbufB_inslen: fetchbufD_inslen;
|
assign fetchbuf1_v = (fetchbuf == 1'b0) ? fetchbufB_v : fetchbufD_v ;
|
assign fetchbuf1_v = (fetchbuf == 1'b0) ? fetchbufB_v : fetchbufD_v ;
|
assign fetchbuf1_pc = (fetchbuf == 1'b0) ? fetchbufB_pc : fetchbufD_pc ;
|
assign fetchbuf1_pc = (fetchbuf == 1'b0) ? fetchbufB_pc : fetchbufD_pc ;
|
assign fetchbuf0_thrd = 1'b0;
|
assign fetchbuf0_thrd = 1'b0;
|
assign fetchbuf1_thrd = thread_en;
|
assign fetchbuf1_thrd = thread_en;
|
|
|
|
reg [2:0] insln0, insln1;
|
always @*
|
always @*
|
begin
|
begin
|
if (insn0[5:0]==`CMPRSSD)
|
if (insn0[5:0]==`CMPRSSD)
|
fetchbuf0_insln <= 4'd2;
|
insln0 <= 3'd2;
|
else if (insn0[7:6]==2'b00 && insn0[`INSTRUCTION_OP]==`EXEC)
|
else if (insn0[7:6]==2'b00 && insn0[`INSTRUCTION_OP]==`EXEC)
|
fetchbuf0_insln <= fnInsLength(codebuf0);
|
insln0 <= fnInsLength(codebuf0);
|
else
|
else
|
fetchbuf0_insln <= fnInsLength(insn0);
|
insln0 <= fnInsLength(insn0);
|
end
|
end
|
|
|
always @*
|
always @*
|
begin
|
begin
|
if (insn1[5:0]==`CMPRSSD)
|
if (insn1[5:0]==`CMPRSSD)
|
fetchbuf1_insln <= 4'd2;
|
insln1 <= 3'd2;
|
else if (insn1[7:6]==2'b00 && insn1[`INSTRUCTION_OP]==`EXEC)
|
else if (insn1[7:6]==2'b00 && insn1[`INSTRUCTION_OP]==`EXEC)
|
fetchbuf1_insln <= fnInsLength(codebuf1);
|
insln1 <= fnInsLength(codebuf1);
|
else
|
else
|
fetchbuf1_insln <= fnInsLength(insn1);
|
insln1 <= fnInsLength(insn1);
|
end
|
end
|
|
|
reg [47:0] cinsn0, cinsn1;
|
reg [47:0] cinsn0, cinsn1;
|
|
|
always @*
|
always @*
|
| Line 852... |
Line 863... |
fetchbufA_instr <= cinsn0;
|
fetchbufA_instr <= cinsn0;
|
fetchbufA_v <= `VAL;
|
fetchbufA_v <= `VAL;
|
fetchbufA_pc <= pc0;
|
fetchbufA_pc <= pc0;
|
if (phit && ~freezePC) begin
|
if (phit && ~freezePC) begin
|
if (thread_en)
|
if (thread_en)
|
pc0 <= pc0 + fetchbuf0_insln;
|
pc0 <= pc0 + insln0;
|
else if (`WAYS > 1)
|
else if (`WAYS > 1)
|
pc0 <= pc0 + fetchbuf0_insln + fetchbuf1_insln;
|
pc0 <= pc0 + insln0 + insln1;
|
else
|
else
|
pc0 <= pc0 + fetchbuf0_insln;
|
pc0 <= pc0 + insln0;
|
end
|
end
|
end
|
end
|
endtask
|
endtask
|
|
|
task FetchB;
|
task FetchB;
|
| Line 868... |
Line 879... |
fetchbufB_instr <= cinsn1;
|
fetchbufB_instr <= cinsn1;
|
fetchbufB_v <= `WAYS > 1;
|
fetchbufB_v <= `WAYS > 1;
|
if (thread_en)
|
if (thread_en)
|
fetchbufB_pc <= pc1;
|
fetchbufB_pc <= pc1;
|
else
|
else
|
fetchbufB_pc <= pc0 + fetchbuf0_insln;
|
fetchbufB_pc <= pc0 + insln0;
|
if (phit & thread_en)
|
if (phit & thread_en)
|
pc1 <= pc1 + fetchbuf1_insln;
|
pc1 <= pc1 + insln1;
|
end
|
end
|
endtask
|
endtask
|
|
|
|
|
task FetchAB;
|
task FetchAB;
|
| Line 889... |
Line 900... |
fetchbufC_instr <= cinsn0;
|
fetchbufC_instr <= cinsn0;
|
fetchbufC_v <= `VAL;
|
fetchbufC_v <= `VAL;
|
fetchbufC_pc <= pc0;
|
fetchbufC_pc <= pc0;
|
if (phit && ~freezePC) begin
|
if (phit && ~freezePC) begin
|
if (thread_en)
|
if (thread_en)
|
pc0 <= pc0 + fetchbuf0_insln;
|
pc0 <= pc0 + insln0;
|
else if (`WAYS > 1)
|
else if (`WAYS > 1)
|
pc0 <= pc0 + fetchbuf0_insln + fetchbuf1_insln;
|
pc0 <= pc0 + insln0 + insln1;
|
else
|
else
|
pc0 <= pc0 + fetchbuf0_insln;
|
pc0 <= pc0 + insln0;
|
end
|
end
|
end
|
end
|
endtask
|
endtask
|
|
|
task FetchD;
|
task FetchD;
|
| Line 905... |
Line 916... |
fetchbufD_instr <= cinsn1;
|
fetchbufD_instr <= cinsn1;
|
fetchbufD_v <= `WAYS > 1;
|
fetchbufD_v <= `WAYS > 1;
|
if (thread_en)
|
if (thread_en)
|
fetchbufD_pc <= pc1;
|
fetchbufD_pc <= pc1;
|
else
|
else
|
fetchbufD_pc <= pc0 + fetchbuf0_insln;
|
fetchbufD_pc <= pc0 + insln0;
|
if (phit & thread_en)
|
if (phit & thread_en)
|
pc1 <= pc1 + fetchbuf1_insln;
|
pc1 <= pc1 + insln1;
|
end
|
end
|
endtask
|
endtask
|
|
|
task FetchCD;
|
task FetchCD;
|
begin
|
begin
|
