From a8024eee26debd95df9c7c2a6a0ba4109bd3004d Mon Sep 17 00:00:00 2001 From: Rose Thompson Date: Wed, 6 Mar 2024 15:16:16 -0600 Subject: [PATCH] Revert "Updated subword misaligned." This reverts commit 69d31d50e27199f105706172b5e2427f96689d3f. --- src/lsu/lsu.sv | 2 +- src/lsu/subworddreadmisaligned.sv | 12 ++---------- ...bwordwritemisaligned.sv => subwordwritedouble.sv} | 6 +++--- 3 files changed, 6 insertions(+), 14 deletions(-) rename src/lsu/{subwordwritemisaligned.sv => subwordwritedouble.sv} (97%) diff --git a/src/lsu/lsu.sv b/src/lsu/lsu.sv index 0af655dbf..8e827292f 100644 --- a/src/lsu/lsu.sv +++ b/src/lsu/lsu.sv @@ -425,7 +425,7 @@ module lsu import cvw::*; #(parameter cvw_t P) ( if(MISALIGN_SUPPORT) begin subwordreadmisaligned #(P.LLEN) subwordread(.ReadDataWordMuxM(LittleEndianReadDataWordM), .PAdrM(PAdrM[2:0]), .BigEndianM, .FpLoadStoreM, .Funct3M(LSUFunct3M), .ReadDataM); - subwordwritemisaligned #(P.LLEN) subwordwrite(.LSUFunct3M, .PAdrM(PAdrM[2:0]), .FpLoadStoreM, .BigEndianM, .AllowShiftM, .IMAFWriteDataM, .LittleEndianWriteDataM); + subwordwritedouble #(P.LLEN) subwordwrite(.LSUFunct3M, .PAdrM(PAdrM[2:0]), .FpLoadStoreM, .BigEndianM, .AllowShiftM, .IMAFWriteDataM, .LittleEndianWriteDataM); end else begin subwordread #(P.LLEN) subwordread(.ReadDataWordMuxM(LittleEndianReadDataWordM), .PAdrM(PAdrM[2:0]), .BigEndianM, .FpLoadStoreM, .Funct3M(LSUFunct3M), .ReadDataM); diff --git a/src/lsu/subworddreadmisaligned.sv b/src/lsu/subworddreadmisaligned.sv index 1e179dbc3..fe96844f3 100644 --- a/src/lsu/subworddreadmisaligned.sv +++ b/src/lsu/subworddreadmisaligned.sv @@ -38,7 +38,6 @@ module subwordreadmisaligned #(parameter LLEN) output logic [LLEN-1:0] ReadDataM ); - logic [LLEN*2-1:0] ReadDataAlignedM; logic [7:0] ByteM; logic [15:0] HalfwordM; logic [31:0] WordM; @@ -65,20 +64,13 @@ module subwordreadmisaligned #(parameter LLEN) default: LengthM = 5'd8; endcase + logic [LLEN*2-1:0] ReadDataAlignedM; assign ReadDataAlignedM = ReadDataWordMuxM >> (PAdrSwap[$clog2(LLEN/4)-1:0] * 8); assign ByteM = ReadDataAlignedM[7:0]; assign HalfwordM = ReadDataAlignedM[15:0]; assign WordM = ReadDataAlignedM[31:0]; - logic [LLEN-1:0] lb, lh_flh, lw_flw, ld_fld, lbu, lbu_flq, lhu, lwu; - - assign lb = {{LLEN-8{ByteM[7]}}, ByteM}; - assign lh_flh = {{LLEN-16{HalfwordM[15]|FpLoadStoreM}}, HalfwordM[15:0]};; - assign lw_flw = {{LLEN-32{WordM[31]|FpLoadStoreM}}, WordM[31:0]}; - //assign ld_fld = {{LLEN-64{DblWordM[63]|FpLoadStoreM}}, DblWordM[63:0]}; - - if (LLEN == 128) begin:swrmux logic [63:0] DblWordM; logic [127:0] QdWordM; @@ -128,7 +120,7 @@ module subwordreadmisaligned #(parameter LLEN) 3'b001: ReadDataM = {{LLEN-16{HalfwordM[15]|FpLoadStoreM}}, HalfwordM[15:0]}; // lh/flh 3'b010: ReadDataM = {{LLEN-32{WordM[31]|FpLoadStoreM}}, WordM[31:0]}; // lw/flw - //3'b011: ReadDataM = WordM[LLEN-1:0]; // fld + 3'b011: ReadDataM = WordM[LLEN-1:0]; // fld 3'b100: ReadDataM = {{LLEN-8{1'b0}}, ByteM[7:0]}; // lbu 3'b101: ReadDataM = {{LLEN-16{1'b0}}, HalfwordM[15:0]}; // lhu diff --git a/src/lsu/subwordwritemisaligned.sv b/src/lsu/subwordwritedouble.sv similarity index 97% rename from src/lsu/subwordwritemisaligned.sv rename to src/lsu/subwordwritedouble.sv index dd82ffa19..eb62aa106 100644 --- a/src/lsu/subwordwritemisaligned.sv +++ b/src/lsu/subwordwritedouble.sv @@ -1,5 +1,5 @@ /////////////////////////////////////////// -// subwordwritemisaligned.sv +// subwordwrite.sv // // Written: David_Harris@hmc.edu // Created: 9 January 2021 @@ -28,7 +28,7 @@ // and limitations under the License. //////////////////////////////////////////////////////////////////////////////////////////////// -module subwordwritemisaligned #(parameter LLEN) ( +module subwordwritedouble #(parameter LLEN) ( input logic [2:0] LSUFunct3M, input logic [2:0] PAdrM, input logic FpLoadStoreM, @@ -38,7 +38,7 @@ module subwordwritemisaligned #(parameter LLEN) ( output logic [LLEN*2-1:0] LittleEndianWriteDataM ); - // *** RT: This is logic is duplicated in subwordreadmisaligned. Merge the two. + // *** RT: This is logic is duplicated in subwordreaddouble. Merge the two. logic [4:0] PAdrSwap; logic [4:0] BigEndianPAdr; logic [4:0] LengthM;