lint cleanup: FPU and privileged

wally-pipelined/src/fpu/fcmp.sv

@@ -271,7 +271,6 @@ module exception_cmp_2 (
    logic 	      GT;
    logic 	      LT;
    logic 	      EQ;
-   logic [62:0]       sixtythreezeros = 63'h0;
 
    assign dp = !FOpCtrlE[1]&!FOpCtrlE[0];
    assign sp = !FOpCtrlE[1]&FOpCtrlE[0];

wally-pipelined/src/fpu/fma.sv

@@ -468,7 +468,6 @@ module fma2(
     logic               Plus1, Minus1, CalcPlus1;   // do you add or subtract one for rounding
     logic               UfPlus1;                    // do you add one (for determining underflow flag)
     logic               Invalid,Underflow,Overflow; // flags
-    logic               ZeroSgn;        // the result's sign if the sum is zero
     logic               ResultSgnTmp;   // the result's sign assuming the result is not zero
     logic               Guard, Round;   // bits needed to determine rounding
     logic               UfRound, UfLSBNormSum;   // bits needed to determine rounding for underflow flag

wally-pipelined/src/privileged/csr.sv

@@ -35,9 +35,8 @@ module csr #(parameter
   input  logic             clk, reset,
   input  logic             FlushD, FlushE, FlushM, FlushW,
   input  logic             StallD, StallE, StallM, StallW,
-  input  logic [31:0]      InstrD,InstrE,InstrM, 
-  input  logic [`XLEN-1:0] PCF, PCD, PCE, PCM, SrcAM,
-  input  logic             InterruptM,
+  input  logic [31:0]      InstrM, 
+  input  logic [`XLEN-1:0] PCM, SrcAM,
   input  logic             CSRReadM, CSRWriteM, TrapM, MTrapM, STrapM, UTrapM, mretM, sretM, uretM,
   input  logic             TimerIntM, ExtIntM, SwIntM,
   input  logic [63:0]      MTIME_CLINT, MTIMECMP_CLINT,
@@ -51,9 +50,6 @@ module csr #(parameter
   input  logic             DCacheAccess,
   input  logic [1:0]       NextPrivilegeModeM, PrivilegeModeW,
   input  logic [`XLEN-1:0] CauseM, NextFaultMtvalM,
-  input  logic             BreakpointFaultM, EcallFaultM,
-  input  logic             InstrMisalignedFaultM, InstrAccessFaultM, IllegalInstrFaultM,
-  input  logic             LoadMisalignedFaultM, StoreMisalignedFaultM, LoadAccessFaultM, StoreAccessFaultM,
   output logic [1:0]       STATUS_MPP,
   output logic             STATUS_SPP, STATUS_TSR,
   output logic [`XLEN-1:0] MEPC_REGW, SEPC_REGW, UEPC_REGW, UTVEC_REGW, STVEC_REGW, MTVEC_REGW,

wally-pipelined/src/privileged/trap.sv

@@ -4,7 +4,7 @@
 // Written: David_Harris@hmc.edu 9 January 2021
 // Modified: dottolia@hmc.edu 14 April 2021: Add support for vectored interrupts
 //
-// Purpose: Handle Traps: Exceptions and Interrupt
+// Purpose: Handle Traps: Exceptions and Interrupts
 //          See RISC-V Privileged Mode Specification 20190608 3.1.10-11
 // 
 // A component of the Wally configurable RISC-V project.
@@ -27,7 +27,7 @@
 `include "wally-config.vh"
 
 module trap (
-  input logic 		   clk, reset, 
+  input logic 		   reset, 
   input logic 		   InstrMisalignedFaultM, InstrAccessFaultM, IllegalInstrFaultM,
   input logic 		   BreakpointFaultM, LoadMisalignedFaultM, StoreMisalignedFaultM,
   input logic 		   LoadAccessFaultM, StoreAccessFaultM, EcallFaultM, InstrPageFaultM,
@@ -40,7 +40,6 @@ module trap (
   input logic [`XLEN-1:0]  PCM,
   input logic [`XLEN-1:0]  InstrMisalignedAdrM, MemAdrM, 
   input logic [31:0] 	   InstrM,
-  input logic 		   StallW,
   input logic 		   InstrValidM, CommittedM,
   output logic 		   TrapM, MTrapM, STrapM, UTrapM, RetM,
   output logic 		   InterruptM,