source: XOpenSparcT1/trunk/T1-CPU/tlu/tlu_tdp.v @ 6

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[6]1// ========== Copyright Header Begin ==========================================
2//
3// OpenSPARC T1 Processor File: tlu_tdp.v
4// Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
5// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
6//
7// The above named program is free software; you can redistribute it and/or
8// modify it under the terms of the GNU General Public
9// License version 2 as published by the Free Software Foundation.
10//
11// The above named program is distributed in the hope that it will be
12// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14// General Public License for more details.
15//
16// You should have received a copy of the GNU General Public
17// License along with this work; if not, write to the Free Software
18// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
19//
20// ========== Copyright Header End ============================================
21///////////////////////////////////////////////////////////////////////
22/*
23//      Description:    Trap Datapath
24*/
25////////////////////////////////////////////////////////////////////////
26// Global header file includes
27////////////////////////////////////////////////////////////////////////
28`include "sys.h" // system level definition file which contains the
29                             // time scale definition
30
31////////////////////////////////////////////////////////////////////////
32// Local header file includes / local defines
33////////////////////////////////////////////////////////////////////////
34`include "tlu.h"
35
36//FPGA_SYN enables all FPGA related modifications
37`ifdef FPGA_SYN 
38`define FPGA_SYN_CLK_EN
39`define FPGA_SYN_CLK_DFF
40`endif
41
42module tlu_tdp (/*AUTOARG*/
43   // Outputs
44   tlu_pib_rsr_data_e, tlu_restore_pc_w1, tlu_restore_npc_w1, tlu_partial_trap_pc_w1,
45   tsa_wdata, tlu_int_pstate_ie, local_pstate_ie, tlu_ifu_pstate_pef, 
46   tlu_lsu_pstate_cle, tlu_lsu_pstate_priv, tlu_int_redmode, tlu_lsu_redmode, 
47   tlu_sscan_test_data, 
48   // modified for bug 1767
49   tlu_pstate_am, tlu_sftint_id, 
50   // added for timing
51   // modfied for hypervisor support
52   tlu_dnrtry_global_g, tlu_tick_incr_din, tlu_exu_rsr_data_m, 
53   tlu_hpstate_priv, local_hpstate_priv, local_hpstate_enb, local_pstate_priv, 
54   tlu_hpstate_enb, tlu_hintp, tlu_por_rstint_g, tcl_hpstate_priv, tcl_hpstate_enb, 
55   tlu_trap_hpstate_enb, tlu_hpstate_tlz, tlu_asi_state_e, tlu_hpstate_ibe, 
56   so, 
57   // Inputs
58   tsa_rdata, tlu_wsr_data_w, lsu_tlu_rsr_data_e, tlu_ibrkpt_trap_w2, 
59   // reset was modified to abide to the Niagara reset methodology
60   rclk, tlu_rst, tlu_thrd_wsel_w2, ifu_lsu_imm_asi_d, // tm_l,
61   tlu_final_ttype_w2, tlu_pstate_din_sel0, tlu_pstate_din_sel1, 
62   tlu_pstate_din_sel2, tlu_pstate_din_sel3, ifu_lsu_imm_asi_vld_d, 
63   lsu_asi_reg0, lsu_asi_reg1, lsu_asi_reg2, lsu_asi_reg3, 
64   exu_tlu_ccr0_w, exu_tlu_ccr1_w, exu_tlu_ccr2_w, exu_tlu_ccr3_w, 
65   exu_tlu_cwp0, exu_tlu_cwp1, exu_tlu_cwp2, exu_tlu_cwp3, tlu_trap_cwp_en, 
66   tlu_pc_new_w, tlu_npc_new_w, tlu_sftint_en_l_g, tlu_sftint_mx_sel, 
67   tlu_set_sftint_l_g, tlu_wr_tsa_inst_w2,  tlu_clr_sftint_l_g, 
68   tlu_wr_sftint_l_g, tlu_sftint_penc_sel, tlu_tba_en_l, tlu_tick_en_l, 
69   tlu_tickcmp_sel, tlu_tickcmp_en_l, // tlu_retry_inst_m, tlu_done_inst_m,
70   tlu_update_pc_l_w, tlu_tl_gt_0_w2, pib_pich_wrap, // tlu_dnrtry_inst_m_l,
71   tlu_select_tba_w2, tlu_select_redmode, tlu_update_pstate_l_w2, tlu_pil, 
72   tlu_trp_lvl, tlu_tick_npt, tlu_thrd_rsel_e, tlu_tick_incr_dout, 
73   tlu_rdpr_mx1_sel, tlu_rdpr_mx2_sel, tlu_rdpr_mx3_sel, tlu_rdpr_mx4_sel, 
74   tlu_hpstate_din_sel0, tlu_hpstate_din_sel1, tlu_pc_mxsel_w2, 
75   tlu_hpstate_din_sel2, tlu_hpstate_din_sel3, tlu_update_hpstate_l_w2, 
76   tlu_htba_en_l, tlu_rdpr_mx5_sel, tlu_rdpr_mx6_sel, pib_picl_wrap, 
77   tlu_rdpr_mx7_sel, tlu_htickcmp_intdis, tlu_stickcmp_en_l, tlu_htickcmp_en_l, 
78   tlu_gl_lvl0, tlu_gl_lvl1, tlu_gl_lvl2, tlu_gl_lvl3, tlu_wr_hintp_g, 
79   tlu_set_hintp_sel_g, ctu_sscan_tid, si, se
80   );   
81
82/*AUTOINPUT*/
83// Beginning of automatic inputs (from unused autoinst inputs)
84// End of automatics
85input   [`TLU_TDP_TSA_WIDTH-1:0] tsa_rdata;                // rd data for tsa.
86input   [`TLU_THRD_NUM-1:0] tlu_por_rstint_g;
87//
88// modified for timing
89input   [`TLU_ASR_DATA_WIDTH-1:0] tlu_wsr_data_w; // pr/st data from irf.
90
91input   [7:0]   lsu_tlu_rsr_data_e;     // lsu sr/pr read data
92
93input           rclk;                   // clock
94//
95// reset was removed to abide to the Niagara reset methodology
96input tlu_rst;                             // unit-reset
97input [`TLU_THRD_NUM-1:0] tlu_thrd_wsel_w2;// thread requiring tsa write.
98input [`TSA_TTYPE_WIDTH-1:0]    tlu_final_ttype_w2;        // selected ttype - g
99input tlu_ibrkpt_trap_w2;       // instruction brkpt trap
100input tlu_trap_hpstate_enb;     // mode indicator for the trapped thrd
101input tlu_wr_tsa_inst_w2;       // write state inst
102input [1:0]  tlu_pstate_din_sel0; // sel source of tsa wdata
103input [1:0]  tlu_pstate_din_sel1; // sel source of tsa wdata
104input [1:0]  tlu_pstate_din_sel2; // sel source of tsa wdata
105input [1:0]  tlu_pstate_din_sel3; // sel source of tsa wdata
106input [`TLU_ASI_STATE_WIDTH-1:0] lsu_asi_reg0; // asi state - thread0
107input [`TLU_ASI_STATE_WIDTH-1:0] lsu_asi_reg1; // asi state - thread1
108input [`TLU_ASI_STATE_WIDTH-1:0] lsu_asi_reg2; // asi state - thread2
109input [`TLU_ASI_STATE_WIDTH-1:0] lsu_asi_reg3; // asi state - thread3
110input [`TLU_ASI_STATE_WIDTH-1:0] ifu_lsu_imm_asi_d; // asi state value from imm
111input ifu_lsu_imm_asi_vld_d; // valid asi state value from imm
112
113input [3:0]      tlu_tickcmp_sel;  // select src for tickcmp
114input [3:0]      tlu_tickcmp_en_l; // tick cmp reg write enable
115input        tlu_tick_en_l;        // tick reg write enable
116
117// overflow for the pic registers - lvl15 int
118// input  [`TLU_THRD_NUM-1:0] pib_pic_wrap;
119input  [`TLU_THRD_NUM-1:0] pib_pich_wrap; 
120input  [`TLU_THRD_NUM-1:0] pib_picl_wrap; 
121
122input [7:0]  exu_tlu_ccr0_w;  // ccr - thread0
123input [7:0]  exu_tlu_ccr1_w;  // ccr - thread1
124input [7:0]  exu_tlu_ccr2_w;  // ccr - thread2
125input [7:0]  exu_tlu_ccr3_w;  // ccr - thread3
126// input [2:0]  exu_tlu_cwp0_w;  // cwp - thread0
127// input [2:0]  exu_tlu_cwp1_w;  // cwp - thread1
128// input [2:0]  exu_tlu_cwp2_w;  // cwp - thread2
129// input [2:0]  exu_tlu_cwp3_w;  // cwp - thread3
130input [2:0]  exu_tlu_cwp0;  // cwp - thread0
131input [2:0]  exu_tlu_cwp1;  // cwp - thread1
132input [2:0]  exu_tlu_cwp2;  // cwp - thread2
133input [2:0]  exu_tlu_cwp3;  // cwp - thread3
134// added for bug3499
135input [`TLU_THRD_NUM-1:0] tlu_trap_cwp_en;
136// modified due to bug 3017
137// input [47:0] ifu_tlu_pc_m;     // pc
138// input [47:0] ifu_tlu_npc_m;   // npc
139// modified due to redistribution of logic
140// input [48:0] ifu_tlu_pc_m;     // pc
141// input [48:0] ifu_tlu_npc_m;   // npc
142input [48:0] tlu_pc_new_w;        // pc
143input [48:0] tlu_npc_new_w;   // npc
144
145input [3:0]      tlu_sftint_en_l_g; // wr enable for sftint regs.
146input [3:0]      tlu_sftint_mx_sel; // mux select for sftint regs
147input        tlu_set_sftint_l_g;       // set sftint
148input        tlu_clr_sftint_l_g;       // clr sftint
149input        tlu_wr_sftint_l_g;        // wr to sftin (asr 16)
150//
151// removed due to sftint recode
152// input [3:0]   tlu_sftint_lvl14_int;  // sftint lvl 14 plus tick int
153input [3:0]      tlu_sftint_penc_sel;
154input [3:0]      tlu_tba_en_l;             // tba reg write enable
155// logic moved to tlu_misctl
156// input                 tlu_retry_inst_m;         // valid retry inst
157// input                 tlu_done_inst_m;          // valid done inst
158// input                 tlu_dnrtry_inst_m;        // valid done/retry inst - g
159// input                 tlu_dnrtry_inst_m_l;      // valid done/retry inst - g
160// input [3:0]   tlu_update_pc_l_m;        // update pc or npc for a thread
161input [3:0]      tlu_update_pc_l_w;        // update pc or npc for a thread
162// modified due to timing
163// input                 tlu_self_boot_rst_g;
164// input                 tlu_tl_gt_0_g;            // trp lvl gt then 0
165// input                 tlu_select_tba_g;
166// input tlu_select_htba_g;   // choosing htba for forming trappc/trapnpc
167// input tlu_self_boot_rst_w2;
168// added for one-hot mux problem
169input [2:0] tlu_pc_mxsel_w2; 
170input tlu_tl_gt_0_w2;     // trp lvl gt then 0
171input tlu_select_tba_w2;
172input [`TLU_THRD_NUM-1:0] tlu_update_pstate_l_w2; // pstate write enable
173input [`TLU_THRD_NUM-1:0] tlu_thrd_rsel_e; // read select for threaded regs
174input [3:0] tlu_pil;     // mx'ed pil
175input [2:0] tlu_trp_lvl; // mx'ed trp lvl
176
177input tlu_select_redmode;
178input tlu_tick_npt;       // npt bit of tick
179
180input [`TLU_ASR_DATA_WIDTH-4:0] tlu_tick_incr_dout;
181//
182// added and/or modified for hypervisor support
183input [1:0] tlu_hpstate_din_sel0; // sel source of tsa wdata
184input [1:0] tlu_hpstate_din_sel1; // sel source of tsa wdata
185input [1:0] tlu_hpstate_din_sel2; // sel source of tsa wdata
186input [1:0] tlu_hpstate_din_sel3; // sel source of tsa wdata
187input [`TLU_THRD_NUM-1:0] tlu_stickcmp_en_l; // stick cmp reg write enable
188input [`TLU_THRD_NUM-1:0] tlu_htickcmp_en_l; // htick cmp reg write enable
189input [`TLU_THRD_NUM-1:0] tlu_wr_hintp_g;    // wr control for hintp regs.
190input [`TLU_THRD_NUM-1:0] tlu_set_hintp_sel_g; // set control for hintp regs.
191input [`TLU_THRD_NUM-1:0] tlu_htba_en_l;     // htba reg write enable
192input [`TLU_THRD_NUM-1:0] tlu_update_hpstate_l_w2; // hpstate write enable
193input tlu_htickcmp_intdis; // int. disable bit of htick-cmp
194input [`TSA_GLOBAL_WIDTH-1:0] tlu_gl_lvl0; // global register value t0
195input [`TSA_GLOBAL_WIDTH-1:0] tlu_gl_lvl1; // global register value t1
196input [`TSA_GLOBAL_WIDTH-1:0] tlu_gl_lvl2; // global register value t2
197input [`TSA_GLOBAL_WIDTH-1:0] tlu_gl_lvl3; // global register value t3
198// mux select to read the new ASR registers
199input [3:1] tlu_rdpr_mx1_sel;
200input [3:1] tlu_rdpr_mx2_sel;
201input [2:1] tlu_rdpr_mx3_sel;
202input [2:1] tlu_rdpr_mx4_sel;
203input [3:1] tlu_rdpr_mx5_sel;
204input [2:0] tlu_rdpr_mx6_sel;
205input [3:0] tlu_rdpr_mx7_sel;
206//
207input [`TLU_THRD_NUM-1:0] ctu_sscan_tid;
208input [`TLU_ASR_DATA_WIDTH-1:0] tlu_pib_rsr_data_e; // rsr data from pib
209
210input si; // scan-in
211input se; // scan-en
212
213/*AUTOOUTPUT*/
214// Beginning of automatic outputs (from unused autoinst outputs)
215// End of automatics
216//
217// modified due to bug 3017
218output [48:0] tlu_restore_pc_w1;  // trap pc or pc on retry.
219output [48:0] tlu_restore_npc_w1; // trap pc or pc on retry.
220output [33:0] tlu_partial_trap_pc_w1;
221// the tlu_exu_rsr_data_e will become obsolete, to be removed
222// added for timing
223// output [`TLU_ASR_DATA_WIDTH-1:0] tlu_exu_rsr_data_e; // rsr data to exu
224output [`TLU_ASR_DATA_WIDTH-1:0] tlu_exu_rsr_data_m; // rsr data to exu
225// modified due to timing violations
226// output [`TLU_ASR_DATA_WIDTH-1:0] tlu_pib_rsr_data_e; // trap pc or pc on retry.
227//
228// modified for hypervisor support
229output [`TLU_TSA_WIDTH-1:0] tsa_wdata; // wr data for tsa.
230//
231output [`TLU_THRD_NUM-1:0] tlu_int_pstate_ie;   // interrupt enable
232output [`TLU_THRD_NUM-1:0] local_pstate_ie;   // interrupt enable
233output [`TLU_THRD_NUM-1:0] tlu_ifu_pstate_pef;  // fp enable
234output [`TLU_THRD_NUM-1:0] tlu_lsu_pstate_cle;  // current little endian
235output [`TLU_THRD_NUM-1:0] tlu_lsu_pstate_priv; // privilege mode
236output [`TLU_THRD_NUM-1:0] tlu_int_redmode;       // redmode
237output [`TLU_THRD_NUM-1:0] tlu_lsu_redmode;       // redmode
238// modified for bug 1767
239// output   [1:0] tlu_pstate0_mmodel; // mem. model - thread0
240// output   [1:0] tlu_pstate1_mmodel; // mem. model - thread1
241// output   [1:0] tlu_pstate2_mmodel; // mem. model - thread2
242// output   [1:0] tlu_pstate3_mmodel; // mem. model - thread3
243// output   [3:0] tlu_pstate_tle;         // trap little endian
244// output [`TLU_THRD_NUM-1:0] tlu_pstate_cle;  // current little endian
245// output [`TLU_THRD_NUM-1:0] tlu_pstate_priv; // privilege mode
246output [`TLU_THRD_NUM-1:0] tlu_pstate_am;   // address mask
247//
248// removed for bug 2187
249// output [`TLU_THRD_NUM-1:0] tlu_sftint_lvl14;
250output [`TLU_THRD_NUM-1:0] tlu_hpstate_priv; // hypervisor privilege   
251output [`TLU_THRD_NUM-1:0] tlu_hpstate_enb;  // hypervisor lite enb     
252output [`TLU_THRD_NUM-1:0] tlu_hpstate_tlz;  // hypervisor tlz
253output [`TLU_THRD_NUM-1:0] tlu_hpstate_ibe;  // hypervisor instruction brkpt   
254output [`TLU_THRD_NUM-1:0] local_hpstate_priv; // hypervisor privilege 
255output [`TLU_THRD_NUM-1:0] tcl_hpstate_priv; // hypervisor privilege   
256output [`TLU_THRD_NUM-1:0] local_pstate_priv;  // pstate privilege     
257output [`TLU_THRD_NUM-1:0] local_hpstate_enb;  // hypervisor lite enb   
258output [`TLU_THRD_NUM-1:0] tcl_hpstate_enb;  // hypervisor lite enb     
259output [3:0] tlu_sftint_id;     
260// output       tlu_tick_match; // tick to tick cmp match
261// output       tlu_stick_match;        // stick to tick cmp match
262// output       tlu_htick_match;        // htick to tick cmp match
263// output [`TLU_ASR_DATA_WIDTH-1:0] tlu_tick_incr_din;
264output [`TLU_ASR_DATA_WIDTH-3:0] tlu_tick_incr_din;
265//
266// modified for hypervisor support
267// output       [2:0]   tlu_restore_globals; // restored global regs
268//
269output [`TSA_GLOBAL_WIDTH-1:0] tlu_dnrtry_global_g; // restored globals
270output [`TLU_THRD_NUM-1:0]     tlu_hintp;
271//
272// current asi state
273output [`TLU_ASI_STATE_WIDTH-1:0] tlu_asi_state_e;
274//
275// modified due to race key word limitation
276// output [62:0] tlu_sscan_test_data;
277output [`TDP_SSCAN_WIDTH-1:0] tlu_sscan_test_data;
278output            so; // scan-out;
279
280/*AUTOWIRE*/
281// Beginning of automatic wires (for undeclared instantiated-module outputs)
282// End of automatics
283//
284// local reset was added to abide to the Niagara reset methodology
285wire        local_rst; // local reset
286wire        se_l; // testmode_l replacement
287//
288// rdpr muxe outputs
289wire [`TLU_ASR_DATA_WIDTH-1:0] tlu_rdpr_mx1_out;
290wire [3:0]  tlu_rdpr_mx2_out;
291wire [`SFTINT_WIDTH-1:0]  tlu_rdpr_mx3_out;
292wire [`RDSR_TSTATE_WIDTH-1:0]  tlu_rdpr_mx4_out;
293//
294// constructing one-hot selects
295wire rdpr_mx1_onehot_sel, rdpr_mx2_onehot_sel; 
296wire rdpr_mx3_onehot_sel, rdpr_mx4_onehot_sel; 
297wire rdpr_mx5_onehot_sel, rdpr_mx6_onehot_sel; 
298//
299wire  [32:0] true_tba0,true_tba1,true_tba2,true_tba3;
300wire  [60:0] true_tick;
301// modified due to bug 3017
302wire  [48:0] true_pc0,true_pc1,true_pc2,true_pc3;
303// wire  [47:0] sscan_pc;
304wire  [`TDP_SSCAN_WIDTH-1:0] sscan_data_test0;
305wire  [`TDP_SSCAN_WIDTH-1:0] sscan_data_test1;
306wire  [`TDP_SSCAN_WIDTH-1:0] sscan_data_test2;
307wire  [`TDP_SSCAN_WIDTH-1:0] sscan_data_test3;
308wire  [`TDP_SSCAN_WIDTH-1:0] tdp_sscan_test_data;
309wire  [`TLU_THRD_NUM-1:0] sscan_tid_sel; 
310wire  [48:0] true_npc0,true_npc1,true_npc2,true_npc3;
311// wire  [47:0] true_npc0,true_npc1,true_npc2,true_npc3;
312// wire  [47:0] true_pc0,true_pc1,true_pc2,true_pc3;
313// wire  [47:0] sscan_pc;
314// wire  [47:0] normal_trap_pc, normal_trap_npc;
315//
316// modified for hypervisor support
317wire [`TLU_TSA_WIDTH-1:0] trap_tsa_wdata;
318wire [`TLU_TSA_WIDTH-1:0] trap0_tsa_wdata,trap1_tsa_wdata;
319wire [`TLU_TSA_WIDTH-1:0] trap2_tsa_wdata,trap3_tsa_wdata;
320wire [`TLU_TSA_WIDTH-1:0] wrpr_tsa_wdata;
321wire [`TLU_TSA_WIDTH-1:0] tsa_wdata;
322wire [`RDSR_TSTATE_WIDTH-1:0]  tstate_rdata;
323wire [1:0]  tstate_dummy_zero;
324wire [`WSR_TSTATE_WIDTH-1:0]   compose_tstate;
325wire [`TSA_HTSTATE_WIDTH-1:0]  compose_htstate;
326wire [`TSA_GLOBAL_WIDTH-1:0]   global_rdata;   
327// wire [`TLU_ASR_DATA_WIDTH-1:0] wsr_data_w;   
328wire [`SFTINT_WIDTH-1:0] wsr_data_w;   
329// reduced width to 48 due to lint violations
330wire [47:0] wsr_data_w2;       
331//
332// modified for bug 3017
333// wire  [47:2] trap_pc0,trap_pc1,trap_pc2,trap_pc3;
334// wire  [47:2] trap_npc0,trap_npc1,trap_npc2,trap_npc3;
335wire  [48:2] trap_pc0,trap_pc1,trap_pc2,trap_pc3;
336wire  [48:2] trap_npc0,trap_npc1,trap_npc2,trap_npc3;
337wire   [7:0] trap_ccr0,trap_ccr1,trap_ccr2,trap_ccr3;
338wire   [7:0] trap_asi0,trap_asi1,trap_asi2,trap_asi3;
339wire   [2:0] trap_cwp0,trap_cwp1,trap_cwp2,trap_cwp3;
340wire   [2:0] tlu_cwp0,tlu_cwp1,tlu_cwp2,tlu_cwp3;
341wire   [`TLU_ASI_STATE_WIDTH-1:0] imm_asi_e; 
342wire   [`TLU_ASI_STATE_WIDTH-1:0] asi_state_reg_e; 
343wire   [`TLU_ASI_STATE_WIDTH-1:0] asi_state_final_e; 
344wire   imm_asi_vld_e;
345//
346// modified due to tickcmp, stickcmp and sftint cleanup
347// wire  [15:0] sftint0, sftint1, sftint2, sftint3;
348// wire  [15:1] sftint_set_din, sftint_clr_din, sftint_wr_din;
349wire  [`SFTINT_WIDTH-1:0] sftint0, sftint1, sftint2, sftint3;
350wire  [`SFTINT_WIDTH-1:0] sftint_set_din, sftint_clr_din, sftint_wr_din;
351wire [`SFTINT_WIDTH-1:0] sftint_din;
352wire [`SFTINT_WIDTH-1:0] sftint;
353wire [`TLU_THRD_NUM-1:0] sftint_b0_din; 
354wire [`TLU_THRD_NUM-1:0] sftint_b0_en;
355wire [`TLU_THRD_NUM-1:0] sftint_b15_din; 
356wire [`TLU_THRD_NUM-1:0] sftint_b15_en;
357wire [`TLU_THRD_NUM-1:0] sftint_b16_din; 
358wire [`TLU_THRD_NUM-1:0] sftint_b16_en; 
359wire [`TLU_THRD_NUM-1:0] sftint_lvl14;
360wire [3:0] sftin_din_mxsel;
361// recoded for one-hot problem during reset
362// wire sftint_sel_onehot_g;
363//
364// added for PIB support
365wire         tcmp0_clk, tcmp1_clk; 
366wire         tcmp2_clk, tcmp3_clk;
367wire [14:0]  sftint_penc_din;
368wire         sftint0_clk,sftint1_clk;
369wire         sftint2_clk,sftint3_clk;
370//
371wire [32:0] tba_data;
372wire [32:0] tba_rdata;
373wire [33:0] tlu_rstvaddr_base;
374wire [`TLU_HTBA_WIDTH-1:0] htba_data;
375wire        tba0_clk,tba1_clk,tba2_clk,tba3_clk;
376// modified for bug 3017
377// wire [46:0] tsa_pc_m,tsa_npc_m;
378// wire [48:0] dnrtry_pc,dnrtry_npc;
379wire [48:0] restore_pc_w2;
380wire [48:0] restore_npc_w2;
381// wire [48:0]  pc_new, npc_new;
382// wire [48:0]  pc_new_w, npc_new_w;
383wire [33:0] partial_trap_pc_w2;
384wire        pc0_clk,pc1_clk,pc2_clk,pc3_clk;
385// wire [`TLU_TSA_WIDTH-1:0] tsa_data_m;
386wire [`TLU_ASR_DATA_WIDTH-1:0] true_tickcmp0, true_tickcmp1;
387wire [`TLU_ASR_DATA_WIDTH-1:0] true_tickcmp2, true_tickcmp3;
388wire [`TLU_ASR_DATA_WIDTH-1:0] tickcmp_rdata;
389wire [`TLU_THRD_NUM-1:0] tickcmp_intdis_din;
390wire [`TLU_THRD_NUM-1:0] tickcmp_intdis_en;
391wire [`TLU_THRD_NUM-1:0] tickcmp_int;
392wire [`TLU_THRD_NUM-1:0] tlu_set_hintp_g;
393wire [`TLU_THRD_NUM-1:0] tlu_hintp_en_l_g;
394wire tlu_htick_match;   // htick to tick cmp match
395wire tick_match;
396wire [`TLU_ASR_DATA_WIDTH-4:0] tickcmp_data;
397wire [`TLU_ASR_DATA_WIDTH-2:2] tick_din;
398// reg   [`TLU_ASR_DATA_WIDTH-1:0] tlu_rsr_data_e;
399wire [`PSTATE_TRUE_WIDTH-1:0] true_pstate0,true_pstate1;
400wire [`PSTATE_TRUE_WIDTH-1:0] true_pstate2,true_pstate3;
401// wire [`TLU_THRD_NUM-1:0] tlu_pstate_priv; // privilege mode
402// added for hypervisor support
403wire [`TSA_PSTATE_WIDTH-1:0] trap_pstate0,trap_pstate1;
404wire [`TSA_PSTATE_WIDTH-1:0] trap_pstate2,trap_pstate3;
405//
406// wire [`PSTATE_TRUE_WIDTH-1:0] dnrtry_pstate;
407// wire [`PSTATE_TRUE_WIDTH-1:0] dnrtry_pstate_m;       
408// wire [`PSTATE_TRUE_WIDTH-1:0] wsr_data_pstate_g;     
409wire [`WSR_PSTATE_VR_WIDTH-1:0] dnrtry_pstate_m;       
410wire [`WSR_PSTATE_VR_WIDTH-1:0] dnrtry_pstate_g;       
411wire [`WSR_PSTATE_VR_WIDTH-1:0] dnrtry_pstate_w2;
412// removed for timing
413// wire [`WSR_PSTATE_VR_WIDTH-1:0] wsr_data_pstate_g;
414wire [`WSR_PSTATE_VR_WIDTH-1:0] wsr_data_pstate_w2;     
415//
416// modified for bug 1767
417//wire [`PSTATE_TRUE_WIDTH-1:0] ntrap_pstate;
418// wire [`PSTATE_TRUE_WIDTH-1:0] ntrap_pstate0;
419// wire [`PSTATE_TRUE_WIDTH-1:0] ntrap_pstate1;
420// wire [`PSTATE_TRUE_WIDTH-1:0] ntrap_pstate2;
421// wire [`PSTATE_TRUE_WIDTH-1:0] ntrap_pstate3;
422wire [`WSR_PSTATE_VR_WIDTH-1:0] ntrap_pstate0;
423wire [`WSR_PSTATE_VR_WIDTH-1:0] ntrap_pstate1;
424wire [`WSR_PSTATE_VR_WIDTH-1:0] ntrap_pstate2;
425wire [`WSR_PSTATE_VR_WIDTH-1:0] ntrap_pstate3;
426// modified for bug 2161 and 2584
427wire pstate_priv_set, hpstate_priv_set; 
428wire [`TLU_THRD_NUM-1:0] pstate_priv_thrd_set;
429// wire [`TLU_THRD_NUM-1:0] pstate_priv_update_g;
430wire [`TLU_THRD_NUM-1:0] pstate_priv_update_w2;
431// wire [`TLU_THRD_NUM-1:0] hpstate_dnrtry_priv_g;
432wire [`TLU_THRD_NUM-1:0] hpstate_dnrtry_priv_w2;
433wire [`TLU_THRD_NUM-1:0] hpstate_enb_set;
434wire [`TLU_THRD_NUM-1:0] hpstate_ibe_set;
435wire [`TLU_THRD_NUM-1:0] hpstate_tlz_set;
436// wire [`TLU_THRD_NUM-1:0] hpstate_priv_update_g;
437wire [`TLU_THRD_NUM-1:0] hpstate_priv_update_w2;
438//
439// removed for bug 2588
440// wire [1:0] tlu_select_mmodel0;
441// wire [1:0] tlu_select_mmodel1;
442// wire [1:0] tlu_select_mmodel2;
443// wire [1:0] tlu_select_mmodel3;
444wire [`TLU_THRD_NUM-1:0] tlu_select_tle;
445wire [`TLU_THRD_NUM-1:0] tlu_select_cle;
446// wire [1:0] tlu_pstate0_mmodel;       // mem. model - thread0
447// wire [1:0] tlu_pstate1_mmodel;       // mem. model - thread1
448// wire [1:0] tlu_pstate2_mmodel;       // mem. model - thread2
449// wire [1:0] tlu_pstate3_mmodel;       // mem. model - thread3
450wire [`TLU_THRD_NUM-1:0] tlu_pstate_tle; // trap little endian
451//
452// modified for bug 1575
453// wire [`PSTATE_TRUE_WIDTH-1:0]        restore_pstate;
454// wire [`PSTATE_TRUE_WIDTH-1:0]        restore_pstate0;
455// wire [`PSTATE_TRUE_WIDTH-1:0]        restore_pstate1;
456// wire [`PSTATE_TRUE_WIDTH-1:0]        restore_pstate2;
457// wire [`PSTATE_TRUE_WIDTH-1:0]        restore_pstate3;
458wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate0;
459wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate1;
460wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate2; 
461wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate3;
462wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate0_w3;
463wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate1_w3;
464wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate2_w3; 
465wire [`WSR_PSTATE_VR_WIDTH-1:0] restore_pstate3_w3;
466wire tlu_pstate_nt_sel0, tlu_pstate_nt_sel1;
467wire tlu_pstate_nt_sel2, tlu_pstate_nt_sel3;
468wire tlu_pstate_wsr_sel0, tlu_pstate_wsr_sel1;
469wire tlu_pstate_wsr_sel2, tlu_pstate_wsr_sel3;
470wire hpstate_redmode;
471wire pstate0_clk,pstate1_clk,pstate2_clk,pstate3_clk;
472
473//
474// added or modified for hypervisor support
475// wire [2:0]   global_sel;     
476wire stcmp0_clk, stcmp1_clk, stcmp2_clk, stcmp3_clk;
477wire htcmp0_clk, htcmp1_clk, htcmp2_clk, htcmp3_clk;
478wire tlu_hpstate_hnt_sel0, tlu_hpstate_hnt_sel1;
479wire tlu_hpstate_hnt_sel2, tlu_hpstate_hnt_sel3;
480wire tlu_hpstate_wsr_sel0, tlu_hpstate_wsr_sel1;
481wire tlu_hpstate_wsr_sel2, tlu_hpstate_wsr_sel3;
482wire pc_bit15_sel;
483wire htba0_clk,htba1_clk,htba2_clk,htba3_clk;
484wire hpstate0_clk,hpstate1_clk,hpstate2_clk,hpstate3_clk;
485wire hintp0_clk,hintp1_clk,hintp2_clk,hintp3_clk;
486wire hintp_rdata;
487wire [`TLU_THRD_NUM-1:0]       hintp_din;
488// added or modified due to stickcmp clean-up
489// wire [`TLU_ASR_DATA_WIDTH-2:0] stickcmp_rdata;
490// wire [`TLU_ASR_DATA_WIDTH-2:0] true_stickcmp0, true_stickcmp1;
491// wire [`TLU_ASR_DATA_WIDTH-2:0] true_stickcmp2, true_stickcmp3;
492wire [`TLU_ASR_DATA_WIDTH-1:0] stickcmp_rdata;
493wire [`TLU_ASR_DATA_WIDTH-1:0] true_stickcmp0, true_stickcmp1;
494wire [`TLU_ASR_DATA_WIDTH-1:0] true_stickcmp2, true_stickcmp3;
495wire [`TLU_THRD_NUM-1:0] stickcmp_intdis_din;
496wire [`TLU_THRD_NUM-1:0] stickcmp_intdis_en; 
497wire [`TLU_THRD_NUM-1:0] stickcmp_int; 
498wire stick_match;
499wire [`TLU_ASR_DATA_WIDTH-4:0] stickcmp_data;
500//
501wire [`TLU_ASR_DATA_WIDTH-2:0] htickcmp_rdata;
502wire [`TLU_ASR_DATA_WIDTH-4:0] htickcmp_data;
503wire [`TLU_ASR_DATA_WIDTH-2:0] true_htickcmp0, true_htickcmp1;
504wire [`TLU_ASR_DATA_WIDTH-2:0] true_htickcmp2, true_htickcmp3;
505wire [`TLU_HPSTATE_WIDTH-1:0]  true_hpstate0,true_hpstate1;
506wire [`TLU_HPSTATE_WIDTH-1:0]  true_hpstate2,true_hpstate3;
507wire [`TLU_HPSTATE_WIDTH-1:0]  true_hpstate;
508wire [`TSA_HTSTATE_WIDTH-1:0]  tsa_dnrtry_hpstate_m; 
509wire [`TSA_HTSTATE_WIDTH-1:0]  tsa_dnrtry_hpstate_g; 
510wire [`TSA_HTSTATE_WIDTH-1:0]  tsa_dnrtry_hpstate_w2; 
511// wire [`TLU_HPSTATE_WIDTH-1:0]  dnrtry_hpstate0_g, dnrtry_hpstate1_g;
512wire [`TLU_HPSTATE_WIDTH-1:0]  dnrtry_hpstate0_w2, dnrtry_hpstate1_w2; 
513// wire [`TLU_HPSTATE_WIDTH-1:0]  dnrtry_hpstate2_g, dnrtry_hpstate3_g;
514wire [`TLU_HPSTATE_WIDTH-1:0]  dnrtry_hpstate2_w2, dnrtry_hpstate3_w2; 
515// wire [`TLU_HPSTATE_WIDTH-1:0]  hntrap_hpstate0_g, hntrap_hpstate1_g;
516wire [`TLU_HPSTATE_WIDTH-1:0]  hntrap_hpstate0_w2, hntrap_hpstate1_w2; 
517// wire [`TLU_HPSTATE_WIDTH-1:0]  hntrap_hpstate2_g, hntrap_hpstate3_g;
518wire [`TLU_HPSTATE_WIDTH-1:0]  hntrap_hpstate2_w2, hntrap_hpstate3_w2; 
519wire [`TLU_HPSTATE_WIDTH-1:0]  wsr_data_hpstate_w2; 
520wire [`TLU_HPSTATE_WIDTH-1:0]  restore_hpstate0, restore_hpstate1; 
521wire [`TLU_HPSTATE_WIDTH-1:0]  restore_hpstate2, restore_hpstate3; 
522wire [`TLU_HTBA_WIDTH-1:0]         true_htba0, true_htba1;
523wire [`TLU_HTBA_WIDTH-1:0]         true_htba2, true_htba3;
524wire [`TSA_GLOBAL_WIDTH-1:0]   dnrtry_global_m; 
525wire [`TLU_ASR_DATA_WIDTH-1:0] tlu_rdpr_mx5_out;
526wire [`SFTINT_WIDTH-1:0]       tlu_rdpr_mx6_out;
527wire [`TLU_ASR_DATA_WIDTH-1:0] tlu_rdpr_mx7_out;
528wire [`TLU_ASR_DATA_WIDTH-1:0] tlu_exu_rsr_data_e;
529wire clk; 
530//
531//=========================================================================================
532// create local reset
533
534assign local_rst = tlu_rst;
535assign se_l = ~se;
536
537// clock rename
538assign clk = rclk;
539
540//=========================================================================================
541// Design Notes :
542// HTSTATE-            4 (ENB from HPSTATE is not saved)       
543// TPC-               47 (48-2)VA+(1)VA_HOLE
544// TNPC-                  47 (48-2)VA+(1)VA_HOLE
545// TSTATE.GL-      2 (Only two significant bits are saved)
546// TSTATE.CCR-     8
547// TSTATE.ASI-     8
548// TSTATE.PSTATE-  8 (RED, IG, MG and AG bits are not used)
549// TSTATE.CWP-     3
550// TRAPTYPE-       9
551//========================================================
552// Total         136
553
554//=========================================================================================
555//      Timing Diagram 
556//=========================================================================================
557
558
559// WRITE TO TSA and other trap related registers.
560//      |       |       |               |               |
561//      |E      |M      |       W       |       W2      | Integer
562//      |       |       | exceptions    | push tsa      |
563//      |       |       | reported      | xmit pc       |
564//      |       |       |               |               |
565//      |E      |M      |       G       |       W2      | Long-Latency
566//      |       |       | exceptions    |               |
567//      |       |       | reported      | push tsa      |
568//      |       |       |               | xmit pc       |
569
570//=========================================================================================
571//      Generate TSA Control and Data
572//=========================================================================================
573
574// modified for bug 3017
575assign  trap_pc0[48:2] =  true_pc0[48:2];
576assign  trap_pc1[48:2] =  true_pc1[48:2];
577assign  trap_pc2[48:2] =  true_pc2[48:2];
578assign  trap_pc3[48:2] =  true_pc3[48:2];
579
580assign  trap_npc0[48:2] = true_npc0[48:2]; 
581assign  trap_npc1[48:2] = true_npc1[48:2];
582assign  trap_npc2[48:2] = true_npc2[48:2];
583assign  trap_npc3[48:2] = true_npc3[48:2];
584
585assign  trap_ccr0[7:0] = exu_tlu_ccr0_w[7:0];
586assign  trap_ccr1[7:0] = exu_tlu_ccr1_w[7:0];
587assign  trap_ccr2[7:0] = exu_tlu_ccr2_w[7:0];
588assign  trap_ccr3[7:0] = exu_tlu_ccr3_w[7:0];
589
590// assign       trap_cwp0[2:0] = exu_tlu_cwp0_w[2:0];
591// assign       trap_cwp1[2:0] = exu_tlu_cwp1_w[2:0];
592// assign       trap_cwp2[2:0] = exu_tlu_cwp2_w[2:0];
593// assign       trap_cwp3[2:0] = exu_tlu_cwp3_w[2:0];
594//
595// added for bug 3695
596dff_s #(3) dff_tlu_cwp0 (
597    .din (exu_tlu_cwp0[2:0]),
598    .q   (tlu_cwp0[2:0]),
599    .clk (clk),
600    .se  (se),       
601    .si  (),         
602    .so  ()
603);
604
605dff_s #(3) dff_tlu_cwp1 (
606    .din (exu_tlu_cwp1[2:0]),
607    .q   (tlu_cwp1[2:0]),
608    .clk (clk),
609    .se  (se),       
610    .si  (),         
611    .so  ()
612);
613
614dff_s #(3) dff_tlu_cwp2 (
615    .din (exu_tlu_cwp2[2:0]),
616    .q   (tlu_cwp2[2:0]),
617    .clk (clk),
618    .se  (se),       
619    .si  (),         
620    .so  ()
621);
622
623dff_s #(3) dff_tlu_cwp3 (
624    .din (exu_tlu_cwp3[2:0]),
625    .q   (tlu_cwp3[2:0]),
626    .clk (clk),
627    .se  (se),       
628    .si  (),         
629    .so  ()
630);
631//
632// modified for bug 3499 and 3695
633dffe_s #(3) dffe_trap_cwp0 (
634    // .din (exu_tlu_cwp0[2:0]),
635    .din (tlu_cwp0[2:0]),
636    .q   (trap_cwp0[2:0]),
637    .en  (tlu_trap_cwp_en[0]),
638    .clk (clk),
639    .se  (se),       
640    .si  (),         
641    .so  ()
642);
643
644dffe_s #(3) dffe_trap_cwp1 (
645    // .din (exu_tlu_cwp1[2:0]),
646    .din (tlu_cwp1[2:0]),
647    .q   (trap_cwp1[2:0]),
648    .en  (tlu_trap_cwp_en[1]),
649    .clk (clk),
650    .se  (se),       
651    .si  (),         
652    .so  ()
653);
654
655dffe_s #(3) dffe_trap_cwp2 (
656    // .din (exu_tlu_cwp2[2:0]),
657    .din (tlu_cwp2[2:0]),
658    .q   (trap_cwp2[2:0]),
659    .en  (tlu_trap_cwp_en[2]),
660    .clk (clk),
661    .se  (se),       
662    .si  (),         
663    .so  ()
664);
665
666dffe_s #(3) dffe_trap_cwp3 (
667    // .din (exu_tlu_cwp3[2:0]),
668    .din (tlu_cwp3[2:0]),
669    .q   (trap_cwp3[2:0]),
670    .en  (tlu_trap_cwp_en[3]),
671    .clk (clk),
672    .se  (se),       
673    .si  (),         
674    .so  ()
675);
676
677assign  trap_asi0[7:0] = lsu_asi_reg0[7:0];
678assign  trap_asi1[7:0] = lsu_asi_reg1[7:0];
679assign  trap_asi2[7:0] = lsu_asi_reg2[7:0];
680assign  trap_asi3[7:0] = lsu_asi_reg3[7:0];
681//
682// staging the immediate asi
683
684dff_s #(`TLU_ASI_STATE_WIDTH) dff_imm_asi_e (
685    .din (ifu_lsu_imm_asi_d[`TLU_ASI_STATE_WIDTH-1:0]),
686    .q   (imm_asi_e[`TLU_ASI_STATE_WIDTH-1:0]),
687    .clk (clk),
688    .se  (se),       
689    .si  (),         
690    .so  ()
691);
692
693dffr_s dffr_imm_asi_vld_e (
694     .din (ifu_lsu_imm_asi_vld_d),
695     .q   (imm_asi_vld_e),
696     .clk (clk),
697         .rst (local_rst),
698     .se  (se),
699     .si  (),
700     .so  ()
701);
702//
703// generating the current asi state
704mux4ds  #(`TLU_ASI_STATE_WIDTH) mx_tlu_asi_state_e (
705        .in0    (lsu_asi_reg0[`TLU_ASI_STATE_WIDTH-1:0]),
706        .in1    (lsu_asi_reg1[`TLU_ASI_STATE_WIDTH-1:0]),
707        .in2    (lsu_asi_reg2[`TLU_ASI_STATE_WIDTH-1:0]),
708        .in3    (lsu_asi_reg3[`TLU_ASI_STATE_WIDTH-1:0]),
709        .sel0   (tlu_thrd_rsel_e[0]),
710        .sel1   (tlu_thrd_rsel_e[1]),
711        .sel2   (tlu_thrd_rsel_e[2]),
712        .sel3   (tlu_thrd_rsel_e[3]),
713        // modified due to bug 2442
714        // .dout   (tlu_asi_state_e[`TLU_ASI_STATE_WIDTH-1:0])
715        .dout   (asi_state_reg_e[`TLU_ASI_STATE_WIDTH-1:0])
716); 
717//
718// added for bug 2442
719// generating the current asi state
720mux2ds #(`TLU_ASI_STATE_WIDTH) mx_asi_state_final_e (
721       .in0  (imm_asi_e[`TLU_ASI_STATE_WIDTH-1:0]),
722           .in1  (asi_state_reg_e[`TLU_ASI_STATE_WIDTH-1:0]),
723       .sel0 (imm_asi_vld_e),   
724           .sel1 (~imm_asi_vld_e),
725       .dout (asi_state_final_e[`TLU_ASI_STATE_WIDTH-1:0])
726); 
727
728assign tlu_asi_state_e[`TLU_ASI_STATE_WIDTH-1:0] =
729           asi_state_final_e[`TLU_ASI_STATE_WIDTH-1:0];
730//
731// thread 0
732assign trap_pstate0 = {
733       true_pstate0[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO], 
734       2'b0, true_pstate0[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
735//
736// modified due to hpstate.ibe addition
737assign trap0_tsa_wdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO] = 
738       {true_hpstate0[`TLU_HPSTATE_WIDTH-1],
739        true_hpstate0[`TSA_HTSTATE_WIDTH-2:0]};
740//
741// modified for bug 3017
742//
743assign trap0_tsa_wdata[`TLU_PC_HI:`TLU_PC_LO] = 
744           trap_pc0[48:2];
745//
746assign trap0_tsa_wdata[`TLU_NPC_HI:`TLU_NPC_LO] = 
747           trap_npc0[48:2];
748//
749assign trap0_tsa_wdata[`TLU_GL_HI:`TLU_GL_LO] = 
750       tlu_gl_lvl0[`TSA_GLOBAL_WIDTH-1:0]; 
751//
752assign trap0_tsa_wdata[`TLU_CCR_HI:`TLU_CCR_LO] = 
753       trap_ccr0[`TSA_CCR_WIDTH-1:0]; 
754//
755assign trap0_tsa_wdata[`TLU_ASI_HI:`TLU_ASI_LO] = 
756       trap_asi0[`TSA_ASI_WIDTH-1:0]; 
757//
758assign trap0_tsa_wdata[`TLU_PSTATE_HI:`TLU_PSTATE_LO] = 
759       trap_pstate0[`TSA_PSTATE_WIDTH-1:0]; 
760//
761assign trap0_tsa_wdata[`TLU_CWP_HI:`TLU_CWP_LO] = 
762       trap_cwp0[`TSA_CWP_WIDTH-1:0]; 
763//
764assign trap0_tsa_wdata[`TLU_TT_HI:`TLU_TT_LO] = 
765       tlu_final_ttype_w2[`TSA_TTYPE_WIDTH-1:0]; 
766//
767// thread 1
768assign trap_pstate1 = {
769       true_pstate1[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO], 
770       2'b0, true_pstate1[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
771//
772// modified due to hpstate.ibe addition
773assign trap1_tsa_wdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO] = 
774       {true_hpstate1[`TLU_HPSTATE_WIDTH-1],
775        true_hpstate1[`TSA_HTSTATE_WIDTH-2:0]};
776//
777assign trap1_tsa_wdata[`TLU_PC_HI:`TLU_PC_LO] = 
778           trap_pc1[48:2];
779//
780assign trap1_tsa_wdata[`TLU_NPC_HI:`TLU_NPC_LO] = 
781           trap_npc1[48:2];
782//
783assign trap1_tsa_wdata[`TLU_GL_HI:`TLU_GL_LO] = 
784       tlu_gl_lvl1[`TSA_GLOBAL_WIDTH-1:0]; 
785//
786assign trap1_tsa_wdata[`TLU_CCR_HI:`TLU_CCR_LO] = 
787       trap_ccr1[`TSA_CCR_WIDTH-1:0]; 
788//
789assign trap1_tsa_wdata[`TLU_ASI_HI:`TLU_ASI_LO] = 
790       trap_asi1[`TSA_ASI_WIDTH-1:0]; 
791//
792assign trap1_tsa_wdata[`TLU_PSTATE_HI:`TLU_PSTATE_LO] = 
793       trap_pstate1[`TSA_PSTATE_WIDTH-1:0]; 
794//
795assign trap1_tsa_wdata[`TLU_CWP_HI:`TLU_CWP_LO] = 
796       trap_cwp1[`TSA_CWP_WIDTH-1:0]; 
797//
798assign trap1_tsa_wdata[`TLU_TT_HI:`TLU_TT_LO] = 
799       tlu_final_ttype_w2[`TSA_TTYPE_WIDTH-1:0]; 
800//
801// thread 2
802assign trap_pstate2 = {
803       true_pstate2[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO], 
804       2'b0, true_pstate2[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
805//
806// modified due to hpstate.ibe addition
807assign trap2_tsa_wdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO] = 
808       {true_hpstate2[`TLU_HPSTATE_WIDTH-1],
809        true_hpstate2[`TSA_HTSTATE_WIDTH-2:0]};
810//
811assign trap2_tsa_wdata[`TLU_PC_HI:`TLU_PC_LO] = 
812           trap_pc2[48:2];
813//
814assign trap2_tsa_wdata[`TLU_NPC_HI:`TLU_NPC_LO] = 
815           trap_npc2[48:2];
816//
817assign trap2_tsa_wdata[`TLU_GL_HI:`TLU_GL_LO] = 
818       tlu_gl_lvl2[`TSA_GLOBAL_WIDTH-1:0]; 
819//
820assign trap2_tsa_wdata[`TLU_CCR_HI:`TLU_CCR_LO] = 
821       trap_ccr2[`TSA_CCR_WIDTH-1:0]; 
822//
823assign trap2_tsa_wdata[`TLU_ASI_HI:`TLU_ASI_LO] = 
824       trap_asi2[`TSA_ASI_WIDTH-1:0]; 
825//
826assign trap2_tsa_wdata[`TLU_PSTATE_HI:`TLU_PSTATE_LO] = 
827       trap_pstate2[`TSA_PSTATE_WIDTH-1:0]; 
828//
829assign trap2_tsa_wdata[`TLU_CWP_HI:`TLU_CWP_LO] = 
830       trap_cwp2[`TSA_CWP_WIDTH-1:0]; 
831//
832assign trap2_tsa_wdata[`TLU_TT_HI:`TLU_TT_LO] = 
833       tlu_final_ttype_w2[`TSA_TTYPE_WIDTH-1:0]; 
834//
835// thread 3
836assign trap_pstate3 = {
837       true_pstate3[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO], 
838       2'b0, true_pstate3[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
839//
840// modified due to hpstate.ibe addition
841assign trap3_tsa_wdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO] = 
842       {true_hpstate3[`TLU_HPSTATE_WIDTH-1],
843        true_hpstate3[`TSA_HTSTATE_WIDTH-2:0]};
844//
845assign trap3_tsa_wdata[`TLU_PC_HI:`TLU_PC_LO] = 
846           trap_pc3[48:2];
847//
848assign trap3_tsa_wdata[`TLU_NPC_HI:`TLU_NPC_LO] = 
849           trap_npc3[48:2];
850//
851assign trap3_tsa_wdata[`TLU_GL_HI:`TLU_GL_LO] = 
852       tlu_gl_lvl3[`TSA_GLOBAL_WIDTH-1:0]; 
853//
854assign trap3_tsa_wdata[`TLU_CCR_HI:`TLU_CCR_LO] = 
855       trap_ccr3[`TSA_CCR_WIDTH-1:0]; 
856//
857assign trap3_tsa_wdata[`TLU_ASI_HI:`TLU_ASI_LO] = 
858       trap_asi3[`TSA_ASI_WIDTH-1:0]; 
859//
860assign trap3_tsa_wdata[`TLU_PSTATE_HI:`TLU_PSTATE_LO] = 
861       trap_pstate3[`TSA_PSTATE_WIDTH-1:0]; 
862//
863assign trap3_tsa_wdata[`TLU_CWP_HI:`TLU_CWP_LO] = 
864       trap_cwp3[`TSA_CWP_WIDTH-1:0]; 
865//
866assign trap3_tsa_wdata[`TLU_TT_HI:`TLU_TT_LO] = 
867       tlu_final_ttype_w2[`TSA_TTYPE_WIDTH-1:0]; 
868//
869// modified for timing: tlu_thrd_wsel_g -> tlu_thrd_wsel_w2
870`ifdef FPGA_SYN_1THREAD
871   assign trap_tsa_wdata[`TLU_TSA_WIDTH-1:0] = trap0_tsa_wdata[`TLU_TSA_WIDTH-1:0];
872`else
873   
874mux4ds  #(`TLU_TSA_WIDTH) tsawdsel (
875        .in0    (trap0_tsa_wdata[`TLU_TSA_WIDTH-1:0]),
876        .in1    (trap1_tsa_wdata[`TLU_TSA_WIDTH-1:0]),
877        .in2    (trap2_tsa_wdata[`TLU_TSA_WIDTH-1:0]),
878        .in3    (trap3_tsa_wdata[`TLU_TSA_WIDTH-1:0]),
879        .sel0   (tlu_thrd_wsel_w2[0]),
880        .sel1   (tlu_thrd_wsel_w2[1]),
881        .sel2   (tlu_thrd_wsel_w2[2]),
882        .sel3   (tlu_thrd_wsel_w2[3]),
883        .dout   (trap_tsa_wdata[`TLU_TSA_WIDTH-1:0])
884); 
885`endif // !`ifdef FPGA_SYN_1THREAD
886   
887//
888// modified for timing and lint violations
889// assign wsr_data_w[`TLU_ASR_DATA_WIDTH-1:0] =
890//            tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-1:0];
891assign wsr_data_w[`SFTINT_WIDTH-1:0] = 
892           tlu_wsr_data_w[`SFTINT_WIDTH-1:0];
893//
894// added for timing
895// reduced width to 48 due to lint violations
896dff_s #(48) dff_wsr_data_w2 (
897    .din (tlu_wsr_data_w[47:0]),
898    .q   (wsr_data_w2[47:0]),
899    .clk (clk),
900    .se  (se),       
901    .si  (),         
902    .so  ()
903);
904//
905// extracting the relevant data for tstate from the WSR to be written
906// modified due to timing changes
907assign compose_tstate[`WSR_TSTATE_WIDTH-1:0] = 
908          {wsr_data_w2[`WSR_TSTATE_GL_HI:`WSR_TSTATE_GL_LO],
909       wsr_data_w2[`WSR_TSTATE_CCR_HI:`WSR_TSTATE_CCR_LO],
910       wsr_data_w2[`WSR_TSTATE_ASI_HI:`WSR_TSTATE_ASI_LO],
911       wsr_data_w2[`WSR_TSTATE_PS2_HI:`WSR_TSTATE_PS2_LO],
912       2'b0,
913       wsr_data_w2[`WSR_TSTATE_PS1_HI:`WSR_TSTATE_PS1_LO],
914       wsr_data_w2[`WSR_TSTATE_CWP_HI:`WSR_TSTATE_CWP_LO]};
915//
916// extracting the relevant data from hstate from the WSR to be written
917assign compose_htstate[`TSA_HTSTATE_WIDTH-1:0] = 
918          {wsr_data_w2[`WSR_HPSTATE_IBE],
919       wsr_data_w2[`WSR_HPSTATE_RED],
920           wsr_data_w2[`WSR_HPSTATE_PRIV],
921           wsr_data_w2[`WSR_HPSTATE_TLZ]};
922
923// htstate
924assign  wrpr_tsa_wdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO]=
925        compose_htstate[`TSA_HTSTATE_WIDTH-1:0];
926//
927// modified for bug 3017
928// pc
929assign wrpr_tsa_wdata[`TLU_PC_HI:`TLU_PC_LO]=
930       {1'b0, wsr_data_w2[47:2]};
931// npc
932assign wrpr_tsa_wdata[`TLU_NPC_HI:`TLU_NPC_LO]=
933       {1'b0, wsr_data_w2[47:2]};
934// tstate data
935assign wrpr_tsa_wdata[`TLU_GL_HI:`TLU_CWP_LO]=
936       compose_tstate[`WSR_TSTATE_WIDTH-1:0];
937// ttype data
938assign wrpr_tsa_wdata[`TLU_TT_HI:`TLU_TT_LO]=
939       wsr_data_w2[`TSA_TTYPE_WIDTH-1:0];
940
941mux2ds #(`TLU_TSA_WIDTH) tsawdata_sel (
942       .in0    ({trap_tsa_wdata[`TLU_TSA_WIDTH-1:0]}),
943           .in1    ({wrpr_tsa_wdata[`TLU_TSA_WIDTH-1:0]}),
944       .sel0   (~tlu_wr_tsa_inst_w2),
945       .sel1    (tlu_wr_tsa_inst_w2),
946       .dout   ({tsa_wdata[`TLU_TSA_WIDTH-1:0]})
947); 
948
949//=========================================================================================
950//      SOFT INTERRUPT for Threads
951//=========================================================================================
952
953// Assumption is that softint state is unknown after reset.
954// TICK_INT will be maintained separately. What is the relative order of
955// setting and clearing this bit ? What takes precedence ?
956//
957// modified for bug 2204
958// recoded due to one-hot problem during reset
959
960`ifdef FPGA_SYN_1THREAD
961   assign sftint[`SFTINT_WIDTH-1:0] = sftint0[`SFTINT_WIDTH-1:0];
962`else
963   
964mux4ds #(`SFTINT_WIDTH) mx_sftint (
965        .in0  (sftint0[`SFTINT_WIDTH-1:0]),
966        .in1  (sftint1[`SFTINT_WIDTH-1:0]),
967        .in2  (sftint2[`SFTINT_WIDTH-1:0]),
968        .in3  (sftint3[`SFTINT_WIDTH-1:0]),
969        .sel0 (tlu_sftint_mx_sel[0]),
970        .sel1 (tlu_sftint_mx_sel[1]),
971        .sel2 (tlu_sftint_mx_sel[2]),
972        .sel3 (tlu_sftint_mx_sel[3]),
973        .dout (sftint[`SFTINT_WIDTH-1:0])
974);
975`endif // !`ifdef FPGA_SYN_1THREAD
976   
977/*
978assign sftint_sel_onehot_g =
979           ~tlu_sftint_en_l_g[0] | (&tlu_sftint_en_l_g[3:1]);
980
981mux4ds #(`SFTINT_WIDTH) mx_sftint (
982        .in0  (sftint0[`SFTINT_WIDTH-1:0]),
983        .in1  (sftint1[`SFTINT_WIDTH-1:0]),
984        .in2  (sftint2[`SFTINT_WIDTH-1:0]),
985        .in3  (sftint3[`SFTINT_WIDTH-1:0]),
986        .sel0 (sftint_sel_onehot_g),
987        .sel1 (~tlu_sftint_en_l_g[1]),
988        .sel2 (~tlu_sftint_en_l_g[2]),
989        .sel3 (~tlu_sftint_en_l_g[3]),
990        .dout (sftint[`SFTINT_WIDTH-1:0])
991);
992*/
993
994assign  sftint_set_din[`SFTINT_WIDTH-1:0] = 
995            (wsr_data_w[`SFTINT_WIDTH-1:0] | sftint[`SFTINT_WIDTH-1:0]);
996assign  sftint_clr_din[`SFTINT_WIDTH-1:0] = 
997            (~wsr_data_w[`SFTINT_WIDTH-1:0] & sftint[`SFTINT_WIDTH-1:0]);
998assign  sftint_wr_din[`SFTINT_WIDTH-1:0]  = 
999            wsr_data_w[`SFTINT_WIDTH-1:0];
1000
1001// consturcting the mux select for the sftin_din mux
1002
1003assign sftin_din_mxsel[0] = ~tlu_set_sftint_l_g;
1004assign sftin_din_mxsel[1] = ~tlu_clr_sftint_l_g;
1005assign sftin_din_mxsel[2] = ~tlu_wr_sftint_l_g;
1006assign sftin_din_mxsel[3] = 
1007           tlu_set_sftint_l_g & tlu_clr_sftint_l_g & tlu_wr_sftint_l_g; 
1008
1009mux4ds #(`SFTINT_WIDTH) mx_sftint_din (
1010        .in0  (sftint_set_din[`SFTINT_WIDTH-1:0]),
1011        .in1  (sftint_clr_din[`SFTINT_WIDTH-1:0]),
1012        .in2  (sftint_wr_din[`SFTINT_WIDTH-1:0]),
1013        .in3  (sftint[`SFTINT_WIDTH-1:0]),
1014        .sel0 (sftin_din_mxsel[0]),
1015        .sel1 (sftin_din_mxsel[1]),
1016        .sel2 (sftin_din_mxsel[2]),
1017        .sel3 (sftin_din_mxsel[3]),
1018        .dout (sftint_din[`SFTINT_WIDTH-1:0])
1019); 
1020
1021`ifdef FPGA_SYN_CLK_EN
1022`else
1023clken_buf clkbf_st0 (
1024                .rclk   (clk),
1025                .enb_l  (tlu_sftint_en_l_g[0]),
1026                .tmb_l  (se_l),
1027                .clk    (sftint0_clk)
1028                );     
1029`endif
1030
1031`ifdef FPGA_SYN_CLK_EN
1032`else
1033clken_buf clkbf_st1 (
1034                .rclk   (clk),
1035                .enb_l  (tlu_sftint_en_l_g[1]),
1036                .tmb_l  (se_l),
1037                .clk    (sftint1_clk)
1038                );     
1039`endif
1040
1041`ifdef FPGA_SYN_CLK_EN
1042`else
1043clken_buf clkbf_st2 (
1044                .rclk   (clk),
1045                .enb_l  (tlu_sftint_en_l_g[2]),
1046                .tmb_l  (se_l),
1047                .clk    (sftint2_clk)
1048                );     
1049`endif
1050
1051`ifdef FPGA_SYN_CLK_EN
1052`else
1053clken_buf clkbf_st3 (
1054                .rclk   (clk),
1055                .enb_l  (tlu_sftint_en_l_g[3]),
1056                .tmb_l  (se_l),
1057                .clk    (sftint3_clk)
1058                );     
1059`endif
1060//             
1061// added for PIB support - modified to make inst count precise
1062assign sftint_b15_din[0] = 
1063           (pib_picl_wrap[0] | pib_pich_wrap[0] | sftint_din[15]);
1064assign sftint_b15_din[1] =                       
1065           (pib_picl_wrap[1] | pib_pich_wrap[1] | sftint_din[15]);
1066assign sftint_b15_din[2] =                       
1067           (pib_picl_wrap[2] | pib_pich_wrap[2] | sftint_din[15]);
1068assign sftint_b15_din[3] =                       
1069           (pib_picl_wrap[3] | pib_pich_wrap[3] | sftint_din[15]);
1070
1071assign sftint_b15_en[0] = 
1072           (pib_picl_wrap[0] | pib_pich_wrap[0] | ~tlu_sftint_en_l_g[0]);
1073assign sftint_b15_en[1] = 
1074           (pib_picl_wrap[1] | pib_pich_wrap[1] | ~tlu_sftint_en_l_g[1]);
1075assign sftint_b15_en[2] = 
1076           (pib_picl_wrap[2] | pib_pich_wrap[2] | ~tlu_sftint_en_l_g[2]);
1077assign sftint_b15_en[3] = 
1078           (pib_picl_wrap[3] | pib_pich_wrap[3] | ~tlu_sftint_en_l_g[3]);
1079//             
1080// added due to sftint spec change
1081// tickcmp interrupts
1082assign sftint_b0_din[0] = (tickcmp_int[0] | sftint_din[0]);
1083assign sftint_b0_din[1] = (tickcmp_int[1] | sftint_din[0]);
1084assign sftint_b0_din[2] = (tickcmp_int[2] | sftint_din[0]);
1085assign sftint_b0_din[3] = (tickcmp_int[3] | sftint_din[0]);
1086
1087assign sftint_b0_en[0] = (tickcmp_int[0] | ~tlu_sftint_en_l_g[0]);
1088assign sftint_b0_en[1] = (tickcmp_int[1] | ~tlu_sftint_en_l_g[1]);
1089assign sftint_b0_en[2] = (tickcmp_int[2] | ~tlu_sftint_en_l_g[2]);
1090assign sftint_b0_en[3] = (tickcmp_int[3] | ~tlu_sftint_en_l_g[3]);
1091//
1092// stickcmp interrupts
1093assign sftint_b16_din[0] = (stickcmp_int[0] | sftint_din[16]);
1094assign sftint_b16_din[1] = (stickcmp_int[1] | sftint_din[16]);
1095assign sftint_b16_din[2] = (stickcmp_int[2] | sftint_din[16]);
1096assign sftint_b16_din[3] = (stickcmp_int[3] | sftint_din[16]);
1097
1098assign sftint_b16_en[0] = (stickcmp_int[0] | ~tlu_sftint_en_l_g[0]);
1099assign sftint_b16_en[1] = (stickcmp_int[1] | ~tlu_sftint_en_l_g[1]);
1100assign sftint_b16_en[2] = (stickcmp_int[2] | ~tlu_sftint_en_l_g[2]);
1101assign sftint_b16_en[3] = (stickcmp_int[3] | ~tlu_sftint_en_l_g[3]);
1102
1103// modified for sftint spec change - special treatments for bit 0, 15 and 16
1104//
1105// thread 0
1106`ifdef FPGA_SYN_CLK_DFF
1107dffre_s #(14) dffr_sftint0 (
1108    .din (sftint_din[14:1]), 
1109    .q   (sftint0[14:1]),
1110    .en (~(tlu_sftint_en_l_g[0])), .clk(clk),
1111    .rst (local_rst),
1112    .se  (se),       
1113    .si  (),         
1114    .so  ()
1115);
1116`else
1117dffr_s #(14) dffr_sftint0 (
1118    .din (sftint_din[14:1]), 
1119    .q   (sftint0[14:1]),
1120    .clk (sftint0_clk),
1121    .rst (local_rst),
1122    .se  (se),       
1123    .si  (),         
1124    .so  ()
1125);
1126`endif
1127dffre_s dffre_sftint0_b0 (
1128    .din (sftint_b0_din[0]), 
1129    .q   (sftint0[`SFTINT_TICK_CMP]),
1130    .clk (clk),
1131    .rst (local_rst),
1132    .en  (sftint_b0_en[0]),
1133    .se  (se),
1134    .si  (),         
1135    .so  ()
1136);
1137
1138dffre_s dffre_sftint0_b15 (
1139    .din (sftint_b15_din[0]), 
1140    .q   (sftint0[`SFTINT_PIB_WRAP]),
1141    .clk (clk),
1142    .rst (local_rst),
1143    .en  (sftint_b15_en[0]),
1144    .se  (se),
1145    .si  (),         
1146    .so  ()
1147);
1148
1149dffre_s dffre_sftint0_b16 (
1150    .din (sftint_b16_din[0]), 
1151    .q   (sftint0[`SFTINT_STICK_CMP]),
1152    .clk (clk),
1153    .rst (local_rst),
1154    .en  (sftint_b16_en[0]),
1155    .se  (se),
1156    .si  (),         
1157    .so  ()
1158);
1159//
1160// thread 1
1161`ifdef FPGA_SYN_CLK_DFF
1162dffre_s #(14) sftint1ff (
1163    .din (sftint_din[14:1]), 
1164    .q   (sftint1[14:1]),
1165    .en (~(tlu_sftint_en_l_g[1])), .clk(clk),
1166    .rst (local_rst),
1167    .se  (se),       
1168    .si  (),         
1169    .so  ()
1170);
1171`else
1172dffr_s #(14) sftint1ff (
1173    .din (sftint_din[14:1]), 
1174    .q   (sftint1[14:1]),
1175    .clk (sftint1_clk),
1176    .rst (local_rst),
1177    .se  (se),       
1178    .si  (),         
1179    .so  ()
1180);
1181`endif
1182
1183dffre_s dffre_sftint1_b0 (
1184    .din (sftint_b0_din[1]), 
1185    .q   (sftint1[`SFTINT_TICK_CMP]),
1186    .clk (clk),
1187    .rst (local_rst),
1188    .en  (sftint_b0_en[1]),
1189    .se  (se),
1190    .si  (),         
1191    .so  ()
1192);
1193
1194dffre_s dffre_sftint1_b15 (
1195    .din (sftint_b15_din[1]), 
1196    .q   (sftint1[`SFTINT_PIB_WRAP]),
1197    .clk (clk),
1198    .rst (local_rst),
1199    .en  (sftint_b15_en[1]),
1200    .se  (se),
1201    .si  (),         
1202    .so  ()
1203);
1204
1205dffre_s dffre_sftint1_b16 (
1206    .din (sftint_b16_din[1]), 
1207    .q   (sftint1[`SFTINT_STICK_CMP]),
1208    .clk (clk),
1209    .rst (local_rst),
1210    .en  (sftint_b16_en[1]),
1211    .se  (se),
1212    .si  (),         
1213    .so  ()
1214);
1215//
1216// thread 2
1217`ifdef FPGA_SYN_CLK_DFF
1218dffre_s #(14) sftint2ff (
1219    .din (sftint_din[14:1]), 
1220    .q   (sftint2[14:1]),
1221    .en (~(tlu_sftint_en_l_g[2])), .clk(clk),
1222    .rst (local_rst),
1223    .se  (se),       
1224    .si  (),         
1225    .so  ()
1226);
1227`else
1228dffr_s #(14) sftint2ff (
1229    .din (sftint_din[14:1]), 
1230    .q   (sftint2[14:1]),
1231    .clk (sftint2_clk),
1232    .rst (local_rst),
1233    .se  (se),       
1234    .si  (),         
1235    .so  ()
1236);
1237`endif
1238
1239dffre_s dffre_sftint2_b0 (
1240    .din (sftint_b0_din[2]), 
1241    .q   (sftint2[`SFTINT_TICK_CMP]),
1242    .clk (clk),
1243    .rst (local_rst),
1244    .en  (sftint_b0_en[2]),
1245    .se  (se),
1246    .si  (),         
1247    .so  ()
1248);
1249
1250dffre_s dffre_sftint2_b15 (
1251    .din (sftint_b15_din[2]), 
1252    .q   (sftint2[`SFTINT_PIB_WRAP]),
1253    .clk (clk),
1254    .rst (local_rst),
1255    .en  (sftint_b15_en[2]),
1256    .se  (se),
1257    .si  (),         
1258    .so  ()
1259);
1260
1261dffre_s dffre_sftint2_b16 (
1262    .din (sftint_b16_din[2]), 
1263    .q   (sftint2[`SFTINT_STICK_CMP]),
1264    .clk (clk),
1265    .rst (local_rst),
1266    .en  (sftint_b16_en[2]),
1267    .se  (se),
1268    .si  (),         
1269    .so  ()
1270);
1271//
1272// thread 3
1273`ifdef FPGA_SYN_CLK_DFF
1274dffre_s #(14) sftint3ff (
1275    .din (sftint_din[14:1]), 
1276    .q   (sftint3[14:1]),
1277    .en (~(tlu_sftint_en_l_g[3])), .clk(clk),
1278    .rst (local_rst),
1279    .se  (se),       
1280    .si  (),         
1281    .so  ()
1282);
1283`else
1284dffr_s #(14) sftint3ff (
1285    .din (sftint_din[14:1]), 
1286    .q   (sftint3[14:1]),
1287    .clk (sftint3_clk),
1288    .rst (local_rst),
1289    .se  (se),       
1290    .si  (),         
1291    .so  ()
1292);
1293`endif
1294
1295dffre_s dffre_sftint3_b0 (
1296    .din (sftint_b0_din[3]), 
1297    .q   (sftint3[`SFTINT_TICK_CMP]),
1298    .clk (clk),
1299    .rst (local_rst),
1300    .en  (sftint_b0_en[3]),
1301    .se  (se),
1302    .si  (),         
1303    .so  ()
1304);
1305
1306dffre_s dffre_sftint3_b15 (
1307    .din (sftint_b15_din[3]), 
1308    .q   (sftint3[`SFTINT_PIB_WRAP]),
1309    .clk (clk),
1310    .rst (local_rst),
1311    .en  (sftint_b15_en[3]),
1312    .se  (se),
1313    .si  (),         
1314    .so  ()
1315);
1316
1317dffre_s dffre_sftint3_b16 (
1318    .din (sftint_b16_din[3]), 
1319    .q   (sftint3[`SFTINT_STICK_CMP]),
1320    .clk (clk),
1321    .rst (local_rst),
1322    .en  (sftint_b16_en[3]),
1323    .se  (se),
1324    .si  (),         
1325    .so  ()
1326);
1327//
1328// Datapath priority encoder.
1329assign sftint_lvl14[0] = 
1330           sftint0[`SFTINT_TICK_CMP] | sftint0[`SFTINT_STICK_CMP] | 
1331           sftint0[14];
1332assign sftint_lvl14[1] = 
1333           sftint1[`SFTINT_TICK_CMP] | sftint1[`SFTINT_STICK_CMP] | 
1334           sftint1[14];
1335assign sftint_lvl14[2] = 
1336           sftint2[`SFTINT_TICK_CMP] | sftint2[`SFTINT_STICK_CMP] | 
1337           sftint2[14];
1338assign sftint_lvl14[3] = 
1339           sftint3[`SFTINT_TICK_CMP] | sftint3[`SFTINT_STICK_CMP] | 
1340           sftint3[14];
1341//
1342// modified to ensure one-hot mux check
1343
1344`ifdef FPGA_SYN_1THREAD
1345   assign sftint_penc_din[14:0] = ({sftint0[15],sftint_lvl14[0],sftint0[13:1]});
1346`else
1347   
1348mux4ds #(`SFTINT_WIDTH-2) mx_sftint_penc_din (
1349    .in0  ({sftint0[15],sftint_lvl14[0],sftint0[13:1]}),
1350    .in1  ({sftint1[15],sftint_lvl14[1],sftint1[13:1]}),
1351    .in2  ({sftint2[15],sftint_lvl14[2],sftint2[13:1]}),
1352    .in3  ({sftint3[15],sftint_lvl14[3],sftint3[13:1]}),
1353    .sel0 (tlu_sftint_penc_sel[0]),
1354    .sel1 (tlu_sftint_penc_sel[1]),
1355    .sel2 (tlu_sftint_penc_sel[2]),
1356    .sel3 (tlu_sftint_penc_sel[3]),
1357    .dout (sftint_penc_din[14:0])
1358);
1359`endif // !`ifdef FPGA_SYN_1THREAD
1360   
1361tlu_prencoder16 prencoder16 (
1362                        .din    (sftint_penc_din[14:0]),
1363                        .dout   (tlu_sftint_id[3:0])
1364                );
1365
1366//wire  [15:0]  sftint_rdata;
1367//
1368// modified for hypervisor support
1369// adding the SM bit
1370wire [`SFTINT_WIDTH-1:0]        sftint_rdata;
1371// modified due to spec change
1372/*
1373mux4ds #(`SFTINT_WIDTH) sftint_mx_rsel (
1374    .in0  ({tlu_stick_int[0],sftint0[15:1],tlu_tick_int[0]}),
1375    .in1  ({tlu_stick_int[1],sftint1[15:1],tlu_tick_int[1]}),
1376    .in2  ({tlu_stick_int[2],sftint2[15:1],tlu_tick_int[2]}),
1377    .in3  ({tlu_stick_int[3],sftint3[15:1],tlu_tick_int[3]}),
1378    .sel0 (tlu_thrd_rsel_e[0]),
1379    .sel1 (tlu_thrd_rsel_e[1]),
1380    .sel2 (tlu_thrd_rsel_e[2]),
1381    .sel3 (tlu_thrd_rsel_e[3]),
1382    .dout (sftint_rdata[16:0])
1383);
1384*/
1385`ifdef FPGA_SYN_1THREAD
1386   assign      sftint_rdata[16:0] = sftint0[`SFTINT_WIDTH-1:0];
1387`else
1388   
1389mux4ds #(`SFTINT_WIDTH) sftint_mx_rsel (
1390    .in0  (sftint0[`SFTINT_WIDTH-1:0]),
1391    .in1  (sftint1[`SFTINT_WIDTH-1:0]),
1392    .in2  (sftint2[`SFTINT_WIDTH-1:0]),
1393    .in3  (sftint3[`SFTINT_WIDTH-1:0]),
1394    .sel0 (tlu_thrd_rsel_e[0]),
1395    .sel1 (tlu_thrd_rsel_e[1]),
1396    .sel2 (tlu_thrd_rsel_e[2]),
1397    .sel3 (tlu_thrd_rsel_e[3]),
1398    .dout (sftint_rdata[16:0])
1399);
1400`endif // !`ifdef FPGA_SYN_1THREAD
1401   
1402//=========================================================================================
1403//      TBA for Threads
1404//=========================================================================================
1405
1406// Lower 15 bits are read as zero and ignored when written.
1407
1408`ifdef FPGA_SYN_CLK_EN
1409`else
1410clken_buf clkbf_tba0 (
1411                .rclk   (clk),
1412                .enb_l  (tlu_tba_en_l[0]),
1413                .tmb_l  (se_l),
1414                .clk    (tba0_clk)
1415                );     
1416`endif
1417
1418`ifdef FPGA_SYN_CLK_EN
1419`else
1420clken_buf clkbf_tba1 (
1421                .rclk   (clk),
1422                .enb_l  (tlu_tba_en_l[1]),
1423                .tmb_l  (se_l),
1424                .clk    (tba1_clk)
1425                );     
1426`endif
1427
1428`ifdef FPGA_SYN_CLK_EN
1429`else
1430clken_buf clkbf_tba2 (
1431                .rclk   (clk),
1432                .enb_l  (tlu_tba_en_l[2]),
1433                .tmb_l  (se_l),
1434                .clk    (tba2_clk)
1435                );     
1436`endif
1437
1438`ifdef FPGA_SYN_CLK_EN
1439`else
1440clken_buf clkbf_tba3 (
1441                .rclk   (clk),
1442                .enb_l  (tlu_tba_en_l[3]),
1443                .tmb_l  (se_l),
1444                .clk    (tba3_clk)
1445                );     
1446`endif
1447
1448// THREAD0
1449
1450`ifdef FPGA_SYN_CLK_DFF
1451dffe_s #(33) tba0 (
1452    .din (tlu_wsr_data_w[47:15]), 
1453    .q   (true_tba0[32:0]),
1454    .en (~(tlu_tba_en_l[0])), .clk(clk),
1455    .se  (se),       
1456    .si  (),         
1457    .so  ()
1458);
1459`else
1460dff_s #(33) tba0 (
1461    .din (tlu_wsr_data_w[47:15]), 
1462    .q   (true_tba0[32:0]),
1463    .clk (tba0_clk),
1464    .se  (se),       
1465    .si  (),         
1466    .so  ()
1467);
1468`endif
1469
1470// THREAD1
1471
1472`ifdef FPGA_SYN_CLK_DFF
1473dffe_s #(33) tba1 (
1474    .din (tlu_wsr_data_w[47:15]), 
1475    .(true_tba1[32:0]),
1476    .en (~(tlu_tba_en_l[1])), .clk(clk),
1477    .se  (se),       
1478    .si  (),         
1479    .so  ()
1480);
1481`else
1482dff_s #(33) tba1 (
1483    .din (tlu_wsr_data_w[47:15]), 
1484    .(true_tba1[32:0]),
1485    .clk (tba1_clk),
1486    .se  (se),       
1487    .si  (),         
1488    .so  ()
1489);
1490`endif
1491
1492// THREAD2
1493
1494`ifdef FPGA_SYN_CLK_DFF
1495dffe_s #(33) tba2 (
1496    .din (tlu_wsr_data_w[47:15]), 
1497    .q   (true_tba2[32:0]),
1498    .en (~(tlu_tba_en_l[2])), .clk(clk),
1499    .se  (se),       
1500    .si  (),         
1501    .so  ()
1502);
1503`else
1504dff_s #(33) tba2 (
1505    .din (tlu_wsr_data_w[47:15]), 
1506    .q   (true_tba2[32:0]),
1507    .clk (tba2_clk),
1508    .se  (se),       
1509    .si  (),         
1510    .so  ()
1511);
1512`endif
1513
1514// THREAD3
1515
1516`ifdef FPGA_SYN_CLK_DFF
1517dffe_s #(33) tba3 (
1518    .din (tlu_wsr_data_w[47:15]), 
1519    .(true_tba3[32:0]),
1520    .en (~(tlu_tba_en_l[3])), .clk(clk),
1521    .se  (se),       
1522    .si  (),         
1523    .so  ()
1524);
1525`else
1526dff_s #(33) tba3 (
1527    .din (tlu_wsr_data_w[47:15]), 
1528    .(true_tba3[32:0]),
1529    .clk (tba3_clk),
1530    .se  (se),       
1531    .si  (),         
1532    .so  ()
1533);
1534`endif
1535
1536// tba_data is for traps specifically
1537// modified for timing
1538
1539`ifdef FPGA_SYN_1THREAD
1540   assign      tba_data[32:0] = true_tba0[32:0];
1541   assign      tba_rdata[32:0] = true_tba0[32:0];
1542   
1543`else
1544   
1545mux4ds #(33) mux_tba_data (
1546       .in0  (true_tba0[32:0]),
1547       .in1  (true_tba1[32:0]),
1548       .in2  (true_tba2[32:0]),
1549       .in3  (true_tba3[32:0]),
1550       .sel0 (tlu_thrd_wsel_w2[0]),
1551       .sel1 (tlu_thrd_wsel_w2[1]),
1552       .sel2 (tlu_thrd_wsel_w2[2]),
1553       .sel3 (tlu_thrd_wsel_w2[3]),
1554       .dout (tba_data[32:0])
1555);
1556   
1557/*
1558mux4ds #(33) tba_mx (
1559       .in0  (true_tba0[32:0]),
1560       .in1  (true_tba1[32:0]),
1561       .in2  (true_tba2[32:0]),
1562       .in3  (true_tba3[32:0]),
1563       .sel0 (tlu_thrd_rsel_g[0]),
1564       .sel1 (tlu_thrd_rsel_g[1]),
1565       .sel2 (tlu_thrd_rsel_g[2]),
1566       .sel3 (tlu_thrd_rsel_g[3]),
1567       .dout (tba_data[32:0])
1568);
1569*/
1570// tba_rdata is for read of tba regs specifically.
1571mux4ds #(33) tba_mx_rsel (
1572       .in0  (true_tba0[32:0]),
1573       .in1  (true_tba1[32:0]),
1574       .in2  (true_tba2[32:0]),
1575       .in3  (true_tba3[32:0]),
1576       .sel0 (tlu_thrd_rsel_e[0]),
1577       .sel1 (tlu_thrd_rsel_e[1]),
1578       .sel2 (tlu_thrd_rsel_e[2]),
1579       .sel3 (tlu_thrd_rsel_e[3]),
1580       .dout (tba_rdata[32:0])
1581); 
1582`endif // !`ifdef FPGA_SYN_1THREAD
1583
1584// added for hypervisor support
1585//
1586// HTBA write - constructing clocks 
1587`ifdef FPGA_SYN_CLK_EN
1588`else
1589clken_buf clkbf_htba0 (
1590    .rclk  (clk),
1591        .enb_l (tlu_htba_en_l[0]),
1592        .tmb_l (se_l),
1593        .clk   (htba0_clk)
1594);     
1595`endif
1596
1597`ifdef FPGA_SYN_CLK_EN
1598`else
1599clken_buf clkbf_htba1 (
1600    .rclk  (clk),
1601        .enb_l (tlu_htba_en_l[1]),
1602        .tmb_l (se_l),
1603        .clk   (htba1_clk)
1604);     
1605`endif
1606
1607`ifdef FPGA_SYN_CLK_EN
1608`else
1609clken_buf clkbf_htba2 (
1610    .rclk  (clk),
1611        .enb_l (tlu_htba_en_l[2]),
1612        .tmb_l (se_l),
1613        .clk   (htba2_clk)
1614);     
1615`endif
1616
1617`ifdef FPGA_SYN_CLK_EN
1618`else
1619clken_buf clkbf_htba3 (
1620    .rclk  (clk),
1621        .enb_l (tlu_htba_en_l[3]),
1622        .tmb_l (se_l),
1623        .clk   (htba3_clk)
1624);     
1625`endif
1626//
1627// HTBA write - writing the registers
1628// lower 14 bits of HTBA are reserved, therefore, not stored
1629//
1630// Thread 0
1631`ifdef FPGA_SYN_CLK_DFF
1632dffe_s #(`TLU_HTBA_WIDTH) dff_true_htba0 (
1633    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1634    .q   (true_htba0[`TLU_HTBA_WIDTH-1:0]),
1635    .en (~(tlu_htba_en_l[0])), .clk(clk),
1636    .se  (se),       
1637    .si  (),         
1638    .so  ()
1639);
1640`else
1641dff_s #(`TLU_HTBA_WIDTH) dff_true_htba0 (
1642    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1643    .q   (true_htba0[`TLU_HTBA_WIDTH-1:0]),
1644    .clk (htba0_clk),
1645    .se  (se),       
1646    .si  (),         
1647    .so  ()
1648);
1649`endif
1650//
1651// Thread 1
1652`ifdef FPGA_SYN_CLK_DFF
1653dffe_s #(`TLU_HTBA_WIDTH) dff_true_htba1 (
1654    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1655    .q   (true_htba1[`TLU_HTBA_WIDTH-1:0]),
1656    .en (~(tlu_htba_en_l[1])), .clk(clk),
1657    .se  (se),       
1658    .si  (),         
1659    .so  ()
1660);
1661`else
1662dff_s #(`TLU_HTBA_WIDTH) dff_true_htba1 (
1663    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1664    .q   (true_htba1[`TLU_HTBA_WIDTH-1:0]),
1665    .clk (htba1_clk),
1666    .se  (se),       
1667    .si  (),         
1668    .so  ()
1669);
1670`endif
1671//
1672// Thread 2
1673`ifdef FPGA_SYN_CLK_DFF
1674dffe_s #(`TLU_HTBA_WIDTH) dff_true_htba2 (
1675    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1676    .q   (true_htba2[`TLU_HTBA_WIDTH-1:0]),
1677    .en (~(tlu_htba_en_l[2])), .clk(clk),
1678    .se  (se),       
1679    .si  (),         
1680    .so  ()
1681);
1682`else
1683dff_s #(`TLU_HTBA_WIDTH) dff_true_htba2 (
1684    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1685    .q   (true_htba2[`TLU_HTBA_WIDTH-1:0]),
1686    .clk (htba2_clk),
1687    .se  (se),       
1688    .si  (),         
1689    .so  ()
1690);
1691`endif
1692//
1693// Thread 3
1694`ifdef FPGA_SYN_CLK_DFF
1695dffe_s #(`TLU_HTBA_WIDTH) dff_true_htba3 (
1696    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1697    .q   (true_htba3[`TLU_HTBA_WIDTH-1:0]),
1698    .en (~(tlu_htba_en_l[3])), .clk(clk),
1699    .se  (se),       
1700    .si  (),         
1701    .so  ()
1702);
1703`else
1704dff_s #(`TLU_HTBA_WIDTH) dff_true_htba3 (
1705    .din (tlu_wsr_data_w[`TLU_HTBA_HI:`TLU_HTBA_LO]), 
1706    .q   (true_htba3[`TLU_HTBA_WIDTH-1:0]),
1707    .clk (htba3_clk),
1708    .se  (se),       
1709    .si  (),         
1710    .so  ()
1711);
1712`endif
1713//
1714// constructing the rdata for HTBA
1715wire [`TLU_HTBA_WIDTH-1:0] htba_rdata;
1716
1717`ifdef FPGA_SYN_1THREAD
1718   assign                  htba_rdata[`TLU_HTBA_WIDTH-1:0] = true_htba0[`TLU_HTBA_WIDTH-1:0];
1719   assign                  htba_data[`TLU_HTBA_WIDTH-1:0] = true_htba0[`TLU_HTBA_WIDTH-1:0];
1720`else
1721   
1722mux4ds #(`TLU_HTBA_WIDTH) mux_htba_rdata (
1723       .in0  (true_htba0[`TLU_HTBA_WIDTH-1:0]),
1724       .in1  (true_htba1[`TLU_HTBA_WIDTH-1:0]),
1725       .in2  (true_htba2[`TLU_HTBA_WIDTH-1:0]),
1726       .in3  (true_htba3[`TLU_HTBA_WIDTH-1:0]),
1727       .sel0 (tlu_thrd_rsel_e[0]),
1728       .sel1 (tlu_thrd_rsel_e[1]),
1729       .sel2 (tlu_thrd_rsel_e[2]),
1730       .sel3 (tlu_thrd_rsel_e[3]),
1731       .dout (htba_rdata[`TLU_HTBA_WIDTH-1:0])
1732);
1733//
1734// selecting the htba base address to use
1735// modified for timing
1736mux4ds #(`TLU_HTBA_WIDTH) mux_htba_data (
1737       .in0  (true_htba0[`TLU_HTBA_WIDTH-1:0]),
1738       .in1  (true_htba1[`TLU_HTBA_WIDTH-1:0]),
1739       .in2  (true_htba2[`TLU_HTBA_WIDTH-1:0]),
1740       .in3  (true_htba3[`TLU_HTBA_WIDTH-1:0]),
1741       .sel0 (tlu_thrd_wsel_w2[0]),
1742       .sel1 (tlu_thrd_wsel_w2[1]),
1743       .sel2 (tlu_thrd_wsel_w2[2]),
1744       .sel3 (tlu_thrd_wsel_w2[3]),
1745       .dout (htba_data[`TLU_HTBA_WIDTH-1:0])
1746);
1747`endif // !`ifdef FPGA_SYN_1THREAD
1748   
1749/*
1750mux4ds #(`TLU_HTBA_WIDTH) mux_htba_data (
1751       .in0  (true_htba0[`TLU_HTBA_WIDTH-1:0]),
1752       .in1  (true_htba1[`TLU_HTBA_WIDTH-1:0]),
1753       .in2  (true_htba2[`TLU_HTBA_WIDTH-1:0]),
1754       .in3  (true_htba3[`TLU_HTBA_WIDTH-1:0]),
1755       .sel0 (tlu_thrd_rsel_g[0]),
1756       .sel1 (tlu_thrd_rsel_g[1]),
1757       .sel2 (tlu_thrd_rsel_g[2]),
1758       .sel3 (tlu_thrd_rsel_g[3]),
1759       .dout (htba_data[`TLU_HTBA_WIDTH-1:0])
1760);
1761*/
1762//=========================================================================================
1763//      TICKS for Threads
1764//=========================================================================================
1765
1766// npt needs to be muxed into read !!!
1767
1768
1769// THREAD0,1,2,3
1770
1771mux2ds #(61) tick_sel (
1772       .in0  (tlu_wsr_data_w[62:2]),   
1773           .in1  (tlu_tick_incr_dout[60:0]),
1774       .sel0 (~tlu_tick_en_l),         
1775           .sel1 ( tlu_tick_en_l),
1776       .dout (tick_din[62:2])
1777); 
1778//
1779// modified due to the switch to the soft macro
1780// assign       tlu_tick_incr_din[`TLU_ASR_DATA_WIDTH-1:0] =
1781//         {3'b000,true_tick[60:0]};
1782assign  tlu_tick_incr_din[`TLU_ASR_DATA_WIDTH-3:0] = 
1783         {1'b0,true_tick[60:0]};
1784
1785// Does not need enable as either in increment or update state
1786dff_s #(61) tick0123 (
1787    .din (tick_din[62:2]), 
1788    .(true_tick[60:0]),
1789    .clk (clk),
1790    .se  (se),       
1791    .si (),         
1792    .so ()
1793);
1794
1795//=========================================================================================
1796//      TICK COMPARE  for Threads
1797//=========================================================================================
1798
1799`ifdef FPGA_SYN_CLK_EN
1800`else
1801clken_buf clkbf_tcmp0 (
1802    .rclk  (clk),
1803        .enb_l (tlu_tickcmp_en_l[0]),
1804        .tmb_l (se_l),
1805        .clk   (tcmp0_clk)
1806);     
1807`endif
1808
1809`ifdef FPGA_SYN_CLK_EN
1810`else
1811clken_buf clkbf_tcmp1 (
1812    .rclk  (clk),
1813        .enb_l (tlu_tickcmp_en_l[1]),
1814        .tmb_l (se_l),
1815        .clk   (tcmp1_clk)
1816);     
1817`endif
1818
1819`ifdef FPGA_SYN_CLK_EN
1820`else
1821clken_buf clkbf_tcmp2 (
1822    .rclk  (clk),
1823        .enb_l (tlu_tickcmp_en_l[2]),
1824        .tmb_l (se_l),
1825        .clk   (tcmp2_clk)
1826);     
1827`endif
1828
1829`ifdef FPGA_SYN_CLK_EN
1830`else
1831clken_buf clkbf_tcmp3 (
1832    .rclk  (clk),
1833        .enb_l (tlu_tickcmp_en_l[3]),
1834        .tmb_l (se_l),
1835        .clk   (tcmp3_clk)
1836);     
1837`endif
1838
1839// thread 0
1840// added or modified due to tickcmp clean-up
1841assign tickcmp_intdis_din[0] = 
1842           tlu_wsr_data_w[`TICKCMP_INTDIS] | local_rst | 
1843           tlu_por_rstint_g[0];
1844// added and modified for bug 4763
1845assign tickcmp_intdis_en[0] = 
1846           ~tlu_tickcmp_en_l[0] | local_rst | tlu_por_rstint_g[0]; 
1847
1848dffe_s dffe_tickcmp_intdis0 (
1849    .din (tickcmp_intdis_din[0]),
1850        .q   (true_tickcmp0[`TICKCMP_INTDIS]),
1851    .en  (tickcmp_intdis_en[0]),
1852    .clk (clk),
1853    .se  (se),       
1854    .si  (),         
1855    .so  ()
1856);
1857
1858`ifdef FPGA_SYN_CLK_DFF
1859dffe_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp0 (
1860    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1861        .q   (true_tickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
1862    .en (~(tlu_tickcmp_en_l[0])), .clk(clk),
1863    .se  (se),       
1864    .si  (),         
1865    .so  ()
1866);
1867`else
1868dff_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp0 (
1869    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1870        .q   (true_tickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
1871    .clk (tcmp0_clk),
1872    .se  (se),       
1873    .si  (),         
1874    .so  ()
1875);
1876`endif
1877
1878// thread 1
1879// added or modified due to tickcmp clean-up
1880assign tickcmp_intdis_din[1] = 
1881           tlu_wsr_data_w[`TICKCMP_INTDIS] | local_rst | 
1882           tlu_por_rstint_g[1];
1883// added and modified for bug 4763
1884assign tickcmp_intdis_en[1] = 
1885           ~tlu_tickcmp_en_l[1] | local_rst | tlu_por_rstint_g[1]; 
1886
1887dffe_s dffe_tickcmp_intdis1 (
1888    .din (tickcmp_intdis_din[1]),
1889        .q   (true_tickcmp1[`TICKCMP_INTDIS]),
1890    .en  (tickcmp_intdis_en[1]),
1891    .clk (clk),
1892    .se  (se),       
1893    .si  (),         
1894    .so  ()
1895);
1896
1897`ifdef FPGA_SYN_CLK_DFF
1898dffe_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp1 (
1899    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1900        .q   (true_tickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
1901    .en (~(tlu_tickcmp_en_l[1])), .clk(clk),
1902    .se  (se),       
1903    .si  (),         
1904    .so  ()
1905);
1906`else
1907dff_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp1 (
1908    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1909        .q   (true_tickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
1910    .clk (tcmp1_clk),
1911    .se  (se),       
1912    .si  (),         
1913    .so  ()
1914);
1915`endif
1916
1917// thread 2
1918// added or modified due to tickcmp clean-up
1919assign tickcmp_intdis_din[2] = 
1920           tlu_wsr_data_w[`TICKCMP_INTDIS] | local_rst | 
1921           tlu_por_rstint_g[2];
1922// added and modified for bug 4763
1923assign tickcmp_intdis_en[2] = 
1924           ~tlu_tickcmp_en_l[2] | local_rst | tlu_por_rstint_g[2]; 
1925
1926dffe_s dffe_tickcmp_intdis2 (
1927    .din (tickcmp_intdis_din[2]),
1928        .q   (true_tickcmp2[`TICKCMP_INTDIS]),
1929    .en  (tickcmp_intdis_en[2]),
1930    .clk (clk),
1931    .se  (se),       
1932    .si  (),         
1933    .so  ()
1934);
1935
1936`ifdef FPGA_SYN_CLK_DFF
1937dffe_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp2 (
1938    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1939        .q   (true_tickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
1940    .en (~(tlu_tickcmp_en_l[2])), .clk(clk),
1941    .se  (se),       
1942    .si  (),         
1943    .so  ()
1944);
1945`else
1946dff_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp2 (
1947    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1948        .q   (true_tickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
1949    .clk (tcmp2_clk),
1950    .se  (se),       
1951    .si  (),         
1952    .so  ()
1953);
1954`endif
1955
1956// thread 3
1957// added or modified due to tickcmp clean-up
1958assign tickcmp_intdis_din[3] = 
1959           tlu_wsr_data_w[`TICKCMP_INTDIS] | local_rst | 
1960           tlu_por_rstint_g[3];
1961// added and modified for bug 4763
1962assign tickcmp_intdis_en[3] = 
1963           ~tlu_tickcmp_en_l[3] | local_rst | tlu_por_rstint_g[3]; 
1964
1965dffe_s dffe_tickcmp_intdis3 (
1966    .din (tickcmp_intdis_din[3]),
1967        .q   (true_tickcmp3[`TICKCMP_INTDIS]),
1968    .en  (tickcmp_intdis_en[3]),
1969    .clk (clk),
1970    .se  (se),       
1971    .si  (),         
1972    .so  ()
1973);
1974
1975`ifdef FPGA_SYN_CLK_DFF
1976dffe_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp3 (
1977    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1978        .q   (true_tickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
1979    .en (~(tlu_tickcmp_en_l[3])), .clk(clk),
1980    .se  (se),       
1981    .si  (),         
1982    .so  ()
1983);
1984`else
1985dff_s #(`TLU_ASR_DATA_WIDTH-1) tickcmp3 (
1986    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
1987        .q   (true_tickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
1988    .clk (tcmp3_clk),
1989    .se  (se),       
1990    .si  (),         
1991    .so  ()
1992);
1993`endif
1994
1995// Select 1/4 sources. Assume compare is independent of read
1996// and thus needs separate mux
1997`ifdef FPGA_SYN_1THREAD
1998   assign tickcmp_data[`TLU_ASR_DATA_WIDTH-4:0] = true_tickcmp0[`TLU_ASR_DATA_WIDTH-2:2];
1999   assign tickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0] = true_tickcmp0[`TLU_ASR_DATA_WIDTH-1:0];
2000`else
2001   
2002mux4ds #(`TLU_ASR_DATA_WIDTH-3) tcmp_mx_sel (
2003       .in0  (true_tickcmp0[`TLU_ASR_DATA_WIDTH-2:2]),
2004       .in1  (true_tickcmp1[`TLU_ASR_DATA_WIDTH-2:2]),
2005       .in2  (true_tickcmp2[`TLU_ASR_DATA_WIDTH-2:2]),
2006       .in3  (true_tickcmp3[`TLU_ASR_DATA_WIDTH-2:2]),
2007       .sel0 (tlu_tickcmp_sel[0]),
2008       .sel1 (tlu_tickcmp_sel[1]),
2009       .sel2 (tlu_tickcmp_sel[2]),
2010       .sel3 (tlu_tickcmp_sel[3]),
2011       .dout (tickcmp_data[`TLU_ASR_DATA_WIDTH-4:0])
2012);
2013
2014// mux for read
2015mux4ds #(`TLU_ASR_DATA_WIDTH) tcmp_mx_rsel (
2016       .in0  (true_tickcmp0[`TLU_ASR_DATA_WIDTH-1:0]),
2017       .in1  (true_tickcmp1[`TLU_ASR_DATA_WIDTH-1:0]),
2018       .in2  (true_tickcmp2[`TLU_ASR_DATA_WIDTH-1:0]),
2019       .in3  (true_tickcmp3[`TLU_ASR_DATA_WIDTH-1:0]),
2020       .sel0 (tlu_thrd_rsel_e[0]),
2021       .sel1 (tlu_thrd_rsel_e[1]),
2022       .sel2 (tlu_thrd_rsel_e[2]),
2023       .sel3 (tlu_thrd_rsel_e[3]),
2024       .dout (tickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0])
2025);
2026`endif // !`ifdef FPGA_SYN_1THREAD
2027   
2028//
2029// evaluate for tickcmp match
2030assign tick_match = 
2031           (tickcmp_data[`TICKCMP_RANGE_HI:`TICKCMP_RANGE_LO] == 
2032            true_tick[60:0]);
2033//
2034// moved from tlu_tcl
2035assign  tickcmp_int[0] = 
2036            tick_match & ~true_tickcmp0[`TICKCMP_INTDIS] & tlu_tickcmp_sel[0]; 
2037assign  tickcmp_int[1] = 
2038            tick_match & ~true_tickcmp1[`TICKCMP_INTDIS] & tlu_tickcmp_sel[1];
2039assign  tickcmp_int[2] = 
2040            tick_match & ~true_tickcmp2[`TICKCMP_INTDIS] & tlu_tickcmp_sel[2];
2041assign  tickcmp_int[3] = 
2042            tick_match & ~true_tickcmp3[`TICKCMP_INTDIS] & tlu_tickcmp_sel[3];
2043
2044//=========================================================================================
2045//      STICK COMPARE  for Threads
2046//=========================================================================================
2047// added for hypervisor support
2048
2049`ifdef FPGA_SYN_CLK_EN
2050`else
2051clken_buf clkbf_stcmp0 (
2052    .rclk  (clk),
2053        .enb_l (tlu_stickcmp_en_l[0]),
2054        .tmb_l (se_l),
2055        .clk   (stcmp0_clk)
2056);
2057`endif
2058
2059`ifdef FPGA_SYN_CLK_EN
2060`else
2061clken_buf clkbf_stcmp1 (
2062    .rclk  (clk),
2063        .enb_l (tlu_stickcmp_en_l[1]),
2064        .tmb_l (se_l),
2065        .clk   (stcmp1_clk)
2066);
2067`endif
2068
2069`ifdef FPGA_SYN_CLK_EN
2070`else
2071clken_buf clkbf_stcmp2 (
2072    .rclk  (clk),
2073        .enb_l (tlu_stickcmp_en_l[2]),
2074        .tmb_l (se_l),
2075        .clk   (stcmp2_clk)
2076);
2077`endif
2078
2079`ifdef FPGA_SYN_CLK_EN
2080`else
2081clken_buf clkbf_stcmp3 (
2082    .rclk  (clk),
2083        .enb_l (tlu_stickcmp_en_l[3]),
2084        .tmb_l (se_l),
2085        .clk   (stcmp3_clk)
2086);
2087`endif
2088
2089// thread 0
2090// added or modified due to stickcmp clean-up
2091assign stickcmp_intdis_din[0] = tickcmp_intdis_din[0]; 
2092// added and modified for bug 4763
2093assign stickcmp_intdis_en[0] = 
2094           ~tlu_stickcmp_en_l[0] | local_rst | tlu_por_rstint_g[0]; 
2095
2096dffe_s dffe_stickcmp_intdis0 (
2097    .din (stickcmp_intdis_din[0]),
2098        .q   (true_stickcmp0[`TICKCMP_INTDIS]),
2099    .en  (stickcmp_intdis_en[0]),
2100    .clk (clk),
2101    .se  (se),       
2102    .si  (),         
2103    .so  ()
2104);
2105
2106`ifdef FPGA_SYN_CLK_DFF
2107dffe_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp0 (
2108    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2109        .q   (true_stickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
2110    .en (~(tlu_stickcmp_en_l[0])), .clk(clk),
2111    .se  (se),       
2112    .si  (),         
2113    .so  ()
2114);
2115`else
2116dff_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp0 (
2117    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2118        .q   (true_stickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
2119    .clk (stcmp0_clk),
2120    .se  (se),       
2121    .si  (),         
2122    .so  ()
2123);
2124`endif
2125
2126// thread 1
2127// added or modified due to stickcmp clean-up
2128assign stickcmp_intdis_din[1] = tickcmp_intdis_din[1]; 
2129// added and modified for bug 4763
2130assign stickcmp_intdis_en[1] = 
2131           ~tlu_stickcmp_en_l[1] | local_rst | tlu_por_rstint_g[1]; 
2132
2133dffe_s dffe_stickcmp_intdis1 (
2134    .din (stickcmp_intdis_din[1]),
2135        .q   (true_stickcmp1[`TICKCMP_INTDIS]),
2136    .en  (stickcmp_intdis_en[1]),
2137    .clk (clk),
2138    .se  (se),       
2139    .si  (),         
2140    .so  ()
2141);
2142
2143`ifdef FPGA_SYN_CLK_DFF
2144dffe_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp1 (
2145    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2146        .q   (true_stickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
2147    .en (~(tlu_stickcmp_en_l[1])), .clk(clk),
2148    .se  (se),       
2149    .si  (),         
2150    .so  ()
2151);
2152`else
2153dff_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp1 (
2154    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2155        .q   (true_stickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
2156    .clk (stcmp1_clk),
2157    .se  (se),       
2158    .si  (),         
2159    .so  ()
2160);
2161`endif
2162
2163// thread 2
2164// added or modified due to stickcmp clean-up
2165assign stickcmp_intdis_din[2] = tickcmp_intdis_din[2]; 
2166// added for bug 4763
2167assign stickcmp_intdis_en[2] = 
2168           ~tlu_stickcmp_en_l[2] | local_rst | tlu_por_rstint_g[2]; 
2169
2170dffe_s dffe_stickcmp_intdis2 (
2171    .din (stickcmp_intdis_din[2]),
2172        .q   (true_stickcmp2[`TICKCMP_INTDIS]),
2173    .en  (stickcmp_intdis_en[2]),
2174    .clk (clk),
2175    .se  (se),       
2176    .si  (),         
2177    .so  ()
2178);
2179
2180`ifdef FPGA_SYN_CLK_DFF
2181dffe_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp2 (
2182    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2183        .q   (true_stickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
2184    .en (~(tlu_stickcmp_en_l[2])), .clk(clk),
2185    .se  (se),       
2186    .si  (),         
2187    .so  ()
2188);
2189`else
2190dff_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp2 (
2191    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2192        .q   (true_stickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
2193    .clk (stcmp2_clk),
2194    .se  (se),       
2195    .si  (),         
2196    .so  ()
2197);
2198`endif
2199
2200// thread 3
2201// added or modified due to stickcmp clean-up
2202assign stickcmp_intdis_din[3] = tickcmp_intdis_din[3]; 
2203// added and modified for bug 4763
2204assign stickcmp_intdis_en[3] = 
2205           ~tlu_stickcmp_en_l[3] | local_rst | tlu_por_rstint_g[3]; 
2206
2207dffe_s dffe_stickcmp_intdis3 (
2208    .din (stickcmp_intdis_din[3]),
2209        .q   (true_stickcmp3[`TICKCMP_INTDIS]),
2210    .en  (stickcmp_intdis_en[3]),
2211    .clk (clk),
2212    .se  (se),       
2213    .si  (),         
2214    .so  ()
2215);
2216
2217`ifdef FPGA_SYN_CLK_DFF
2218dffe_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp3 (
2219    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2220        .q   (true_stickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
2221    .en (~(tlu_stickcmp_en_l[3])), .clk(clk),
2222    .se  (se),       
2223    .si  (),         
2224    .so  ()
2225);
2226`else
2227dff_s #(`TLU_ASR_DATA_WIDTH-1) stickcmp3 (
2228    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2229        .q   (true_stickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
2230    .clk (stcmp3_clk),
2231    .se  (se),       
2232    .si  (),         
2233    .so  ()
2234);
2235`endif // !`ifdef FPGA_SYN_CLK_DFF
2236   
2237// Select 1/4 sources. Assume compare is independent of read
2238// and thus needs separate mux
2239
2240`ifdef FPGA_SYN_1THREAD
2241   assign stickcmp_data[`TLU_ASR_DATA_WIDTH-4:0] = true_stickcmp0[`TLU_ASR_DATA_WIDTH-2:2];
2242   assign stickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0] = true_stickcmp0[`TLU_ASR_DATA_WIDTH-1:0];
2243`else
2244   
2245mux4ds #(`TLU_ASR_DATA_WIDTH-3) mux_stickcmp_data (
2246       .in0  (true_stickcmp0[`TLU_ASR_DATA_WIDTH-2:2]),
2247       .in1  (true_stickcmp1[`TLU_ASR_DATA_WIDTH-2:2]),
2248       .in2  (true_stickcmp2[`TLU_ASR_DATA_WIDTH-2:2]),
2249       .in3  (true_stickcmp3[`TLU_ASR_DATA_WIDTH-2:2]),
2250       .sel0 (tlu_tickcmp_sel[0]),
2251       .sel1 (tlu_tickcmp_sel[1]),
2252       .sel2 (tlu_tickcmp_sel[2]),
2253       .sel3 (tlu_tickcmp_sel[3]),
2254       .dout (stickcmp_data[`TLU_ASR_DATA_WIDTH-4:0])
2255);
2256//
2257// mux for read
2258mux4ds #(`TLU_ASR_DATA_WIDTH) mux_stickcmp_rdata (
2259       .in0  (true_stickcmp0[`TLU_ASR_DATA_WIDTH-1:0]),
2260       .in1  (true_stickcmp1[`TLU_ASR_DATA_WIDTH-1:0]),
2261       .in2  (true_stickcmp2[`TLU_ASR_DATA_WIDTH-1:0]),
2262       .in3  (true_stickcmp3[`TLU_ASR_DATA_WIDTH-1:0]),
2263       .sel0 (tlu_thrd_rsel_e[0]),
2264       .sel1 (tlu_thrd_rsel_e[1]),
2265       .sel2 (tlu_thrd_rsel_e[2]),
2266       .sel3 (tlu_thrd_rsel_e[3]),
2267       .dout (stickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0])
2268);
2269`endif // !`ifdef FPGA_SYN_1THREAD
2270   
2271//
2272// evaluate for stickcmp match
2273assign stick_match = 
2274           (stickcmp_data[`TICKCMP_RANGE_HI:`TICKCMP_RANGE_LO] == 
2275            true_tick[60:0]);
2276//
2277// moved from tlu_tcl
2278assign  stickcmp_int[0] = 
2279            stick_match & ~true_stickcmp0[`TICKCMP_INTDIS] & tlu_tickcmp_sel[0]; 
2280assign  stickcmp_int[1] = 
2281            stick_match & ~true_stickcmp1[`TICKCMP_INTDIS] & tlu_tickcmp_sel[1];
2282assign  stickcmp_int[2] = 
2283            stick_match & ~true_stickcmp2[`TICKCMP_INTDIS] & tlu_tickcmp_sel[2];
2284assign  stickcmp_int[3] = 
2285            stick_match & ~true_stickcmp3[`TICKCMP_INTDIS] & tlu_tickcmp_sel[3];
2286
2287//=========================================================================================
2288//      HTICK COMPARE  for Threads
2289//=========================================================================================
2290// added for hypervisor support
2291
2292`ifdef FPGA_SYN_CLK_EN
2293`else
2294clken_buf clkbf_htcmp0 (
2295    .rclk  (clk),
2296        .enb_l (tlu_htickcmp_en_l[0]),
2297        .tmb_l (se_l),
2298        .clk   (htcmp0_clk)
2299);     
2300`endif
2301
2302`ifdef FPGA_SYN_CLK_EN
2303`else
2304clken_buf clkbf_htcmp1 (
2305    .rclk  (clk),
2306        .enb_l (tlu_htickcmp_en_l[1]),
2307        .tmb_l (se_l),
2308        .clk   (htcmp1_clk)
2309);     
2310`endif
2311
2312`ifdef FPGA_SYN_CLK_EN
2313`else
2314clken_buf clkbf_htcmp2 (
2315    .rclk  (clk),
2316        .enb_l (tlu_htickcmp_en_l[2]),
2317        .tmb_l (se_l),
2318        .clk   (htcmp2_clk)
2319);     
2320`endif
2321
2322`ifdef FPGA_SYN_CLK_EN
2323`else
2324clken_buf clkbf_htcmp3 (
2325    .rclk  (clk),
2326        .enb_l (tlu_htickcmp_en_l[3]),
2327        .tmb_l (se_l),
2328        .clk   (htcmp3_clk)
2329);     
2330`endif
2331   
2332// THREAD0
2333`ifdef FPGA_SYN_CLK_DFF
2334dffe_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp0 (
2335    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2336        .q   (true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
2337    .en (~(tlu_htickcmp_en_l[0])), .clk(clk),
2338    .se  (se),       
2339    .si  (),         
2340    .so  ()
2341);
2342`else
2343dff_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp0 (
2344    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2345        .q   (true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
2346    .clk (htcmp0_clk),
2347    .se  (se),       
2348    .si  (),         
2349    .so  ()
2350);
2351`endif
2352
2353// THREAD1
2354`ifdef FPGA_SYN_CLK_DFF
2355dffe_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp1 (
2356    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2357        .q   (true_htickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
2358    .en (~(tlu_htickcmp_en_l[1])), .clk(clk),
2359    .se  (se),       
2360    .si  (),         
2361    .so  ()
2362);
2363`else
2364dff_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp1 (
2365    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2366        .q   (true_htickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
2367    .clk (htcmp1_clk),
2368    .se  (se),       
2369    .si  (),         
2370    .so  ()
2371);
2372`endif
2373
2374// THREAD2
2375`ifdef FPGA_SYN_CLK_DFF
2376dffe_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp2 (
2377    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2378        .q   (true_htickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
2379    .en (~(tlu_htickcmp_en_l[2])), .clk(clk),
2380    .se  (se),
2381    .si  (),
2382    .so  ()
2383);
2384`else
2385dff_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp2 (
2386    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2387        .q   (true_htickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
2388    .clk (htcmp2_clk),
2389    .se  (se),
2390    .si  (),
2391    .so  ()
2392);
2393`endif
2394
2395// THREAD3
2396`ifdef FPGA_SYN_CLK_DFF
2397dffe_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp3 (
2398    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2399        .q   (true_htickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
2400    .en (~(tlu_htickcmp_en_l[3])), .clk(clk),
2401    .se  (se),       
2402    .si  (),         
2403    .so  ()
2404);
2405`else
2406dff_s #(`TLU_ASR_DATA_WIDTH-1) htickcmp3 (
2407    .din (tlu_wsr_data_w[`TLU_ASR_DATA_WIDTH-2:0]),
2408        .q   (true_htickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
2409    .clk (htcmp3_clk),
2410    .se  (se),       
2411    .si  (),         
2412    .so  ()
2413);
2414`endif
2415
2416
2417// Select 1/4 sources. Assume compare is independent of read
2418// and thus needs separate mux
2419`ifdef FPGA_SYN_1THREAD
2420   assign htickcmp_data[`TLU_ASR_DATA_WIDTH-4:0] = true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:2];
2421   assign htickcmp_rdata[`TLU_ASR_DATA_WIDTH-2:0] = true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:0];
2422`else
2423   
2424mux4ds #(`TLU_ASR_DATA_WIDTH-3) mux_htickcmp_data (
2425       .in0  (true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:2]),
2426       .in1  (true_htickcmp1[`TLU_ASR_DATA_WIDTH-2:2]),
2427       .in2  (true_htickcmp2[`TLU_ASR_DATA_WIDTH-2:2]),
2428       .in3  (true_htickcmp3[`TLU_ASR_DATA_WIDTH-2:2]),
2429       .sel0 (tlu_tickcmp_sel[0]),
2430       .sel1 (tlu_tickcmp_sel[1]),
2431       .sel2 (tlu_tickcmp_sel[2]),
2432       .sel3 (tlu_tickcmp_sel[3]),
2433       .dout (htickcmp_data[`TLU_ASR_DATA_WIDTH-4:0])
2434);
2435//
2436// mux for read
2437mux4ds #(`TLU_ASR_DATA_WIDTH-1) mux_htickcmp_rdata (
2438       .in0  (true_htickcmp0[`TLU_ASR_DATA_WIDTH-2:0]),
2439       .in1  (true_htickcmp1[`TLU_ASR_DATA_WIDTH-2:0]),
2440       .in2  (true_htickcmp2[`TLU_ASR_DATA_WIDTH-2:0]),
2441       .in3  (true_htickcmp3[`TLU_ASR_DATA_WIDTH-2:0]),
2442       .sel0 (tlu_thrd_rsel_e[0]),
2443       .sel1 (tlu_thrd_rsel_e[1]),
2444       .sel2 (tlu_thrd_rsel_e[2]),
2445       .sel3 (tlu_thrd_rsel_e[3]),
2446       .dout (htickcmp_rdata[`TLU_ASR_DATA_WIDTH-2:0])
2447);
2448`endif // !`ifdef FPGA_SYN_1THREAD
2449   
2450//
2451// evaluate for htickcmp match
2452assign tlu_htick_match = 
2453           (htickcmp_data[`TICKCMP_RANGE_HI:`TICKCMP_RANGE_LO] == 
2454            true_tick[60:0]);
2455//
2456//=========================================================================================
2457// HINTP REG for Threads
2458//=========================================================================================
2459// added for hypervisor support
2460// modified for timing
2461// creating clocks for accessing the hintp regs
2462assign tlu_hintp_en_l_g[0] = 
2463           ~(tlu_set_hintp_g[0] | tlu_wr_hintp_g[0]); 
2464assign tlu_hintp_en_l_g[1] = 
2465           ~(tlu_set_hintp_g[1] | tlu_wr_hintp_g[1]); 
2466assign tlu_hintp_en_l_g[2] = 
2467           ~(tlu_set_hintp_g[2] | tlu_wr_hintp_g[2]); 
2468assign tlu_hintp_en_l_g[3] = 
2469           ~(tlu_set_hintp_g[3] | tlu_wr_hintp_g[3]); 
2470
2471`ifdef FPGA_SYN_CLK_EN
2472`else
2473clken_buf clkbf_hintp0 (
2474                .rclk   (clk),
2475                .enb_l  (tlu_hintp_en_l_g[0]),
2476                .tmb_l  (se_l),
2477                .clk    (hintp0_clk)
2478);
2479`endif
2480
2481`ifdef FPGA_SYN_CLK_EN
2482`else
2483clken_buf clkbf_hintp1 (
2484                .rclk   (clk),
2485                .enb_l  (tlu_hintp_en_l_g[1]),
2486                .tmb_l  (se_l),
2487                .clk    (hintp1_clk)
2488);
2489`endif
2490
2491`ifdef FPGA_SYN_CLK_EN
2492`else
2493clken_buf clkbf_hintp2 (
2494                .rclk   (clk),
2495                .enb_l  (tlu_hintp_en_l_g[2]),
2496                .tmb_l  (se_l),
2497                .clk    (hintp2_clk)
2498);
2499`endif
2500
2501`ifdef FPGA_SYN_CLK_EN
2502`else
2503clken_buf clkbf_hintp3 (
2504                .rclk   (clk),
2505                .enb_l  (tlu_hintp_en_l_g[3]),
2506                .tmb_l  (se_l),
2507                .clk    (hintp3_clk)
2508);
2509`endif
2510//
2511// setting the value of hintp registers
2512//
2513// Thread 0
2514// added for timing
2515assign tlu_set_hintp_g[0] = 
2516           tlu_set_hintp_sel_g[0] & tlu_htick_match;
2517
2518// modified to reflect the physical implementation
2519// assign hintp_din[0] =
2520//            (tlu_set_hintp_g[0])? tlu_set_hintp_g[0]: wsr_data_w[0];
2521
2522mux2ds mx_hintp_din_0 (
2523       .in0  (tlu_set_hintp_g[0]),
2524           .in1  (wsr_data_w[0]),
2525       .sel0 (tlu_set_hintp_g[0]),     
2526           .sel1 (~tlu_set_hintp_g[0]),
2527       .dout (hintp_din[0])
2528); 
2529
2530`ifdef FPGA_SYN_CLK_DFF
2531dffre_s dffr_hintp0 (
2532     .din (hintp_din[0]), 
2533     .q   (tlu_hintp[0]),
2534     .en (~(tlu_hintp_en_l_g[0])), .clk(clk),
2535         .rst (local_rst),
2536     .se  (se),
2537     .si  (),
2538     .so  ()
2539);
2540`else
2541dffr_s dffr_hintp0 (
2542     .din (hintp_din[0]), 
2543     .q   (tlu_hintp[0]),
2544     .clk (hintp0_clk),
2545         .rst (local_rst),
2546     .se  (se),
2547     .si  (),
2548     .so  ()
2549);
2550`endif
2551
2552// Thread 1
2553// added for timing
2554assign tlu_set_hintp_g[1] = 
2555           tlu_set_hintp_sel_g[1] & tlu_htick_match;
2556
2557// modified to reflect the physical implementation
2558// assign hintp_din[1] =
2559//            (tlu_set_hintp_g[1])? tlu_set_hintp_g[1]: wsr_data_w[0];
2560
2561mux2ds mx_hintp_din_1 (
2562       .in0  (tlu_set_hintp_g[1]),
2563           .in1  (wsr_data_w[0]),
2564       .sel0 (tlu_set_hintp_g[1]),     
2565           .sel1 (~tlu_set_hintp_g[1]),
2566       .dout (hintp_din[1])
2567); 
2568
2569`ifdef FPGA_SYN_CLK_DFF
2570dffre_s dffr_hintp1 (
2571     .din (hintp_din[1]), 
2572     .q   (tlu_hintp[1]),
2573     .en (~(tlu_hintp_en_l_g[1])), .clk(clk),
2574         .rst (local_rst),
2575     .se  (se),
2576     .si  (),
2577     .so  ()
2578);
2579`else
2580dffr_s dffr_hintp1 (
2581     .din (hintp_din[1]), 
2582     .q   (tlu_hintp[1]),
2583     .clk (hintp1_clk),
2584         .rst (local_rst),
2585     .se  (se),
2586     .si  (),
2587     .so  ()
2588);
2589`endif
2590
2591// Thread 2
2592// added for timing
2593assign tlu_set_hintp_g[2] = 
2594           tlu_set_hintp_sel_g[2] & tlu_htick_match;
2595
2596// modified to reflect the physical implementation
2597// assign hintp_din[2] =
2598//            (tlu_set_hintp_g[2])? tlu_set_hintp_g[2]: wsr_data_w[0];
2599
2600mux2ds mx_hintp_din_2 (
2601       .in0  (tlu_set_hintp_g[2]),
2602           .in1  (wsr_data_w[0]),
2603       .sel0 (tlu_set_hintp_g[2]),     
2604           .sel1 (~tlu_set_hintp_g[2]),
2605       .dout (hintp_din[2])
2606); 
2607
2608`ifdef FPGA_SYN_CLK_DFF
2609dffre_s dffr_hintp2 (
2610     .din (hintp_din[2]), 
2611     .q   (tlu_hintp[2]),
2612     .en (~(tlu_hintp_en_l_g[2])), .clk(clk),
2613         .rst (local_rst),
2614     .se  (se),
2615     .si  (),
2616     .so  ()
2617);
2618`else
2619dffr_s dffr_hintp2 (
2620     .din (hintp_din[2]), 
2621     .q   (tlu_hintp[2]),
2622     .clk (hintp2_clk),
2623         .rst (local_rst),
2624     .se  (se),
2625     .si  (),
2626     .so  ()
2627);
2628`endif
2629
2630// Thread 3
2631// added for timing
2632assign tlu_set_hintp_g[3] = 
2633           tlu_set_hintp_sel_g[3] & tlu_htick_match;
2634
2635// modified to reflect the physical implementation
2636// assign hintp_din[3] =
2637//            (tlu_set_hintp_g[3])? tlu_set_hintp_g[3]: wsr_data_w[0];
2638
2639mux2ds mx_hintp_din_3 (
2640       .in0  (tlu_set_hintp_g[3]),
2641           .in1  (wsr_data_w[0]),
2642       .sel0 (tlu_set_hintp_g[3]),     
2643           .sel1 (~tlu_set_hintp_g[3]),
2644       .dout (hintp_din[3])
2645); 
2646
2647`ifdef FPGA_SYN_CLK_DFF
2648dffre_s dffr_hintp3 (
2649     .din (hintp_din[3]), 
2650     .q   (tlu_hintp[3]),
2651     .en (~(tlu_hintp_en_l_g[3])), .clk(clk),
2652         .rst (local_rst),
2653     .se  (se),
2654     .si  (),
2655     .so  ()
2656);
2657`else
2658dffr_s dffr_hintp3 (
2659     .din (hintp_din[3]), 
2660     .q   (tlu_hintp[3]),
2661     .clk (hintp3_clk),
2662         .rst (local_rst),
2663     .se  (se),
2664     .si  (),
2665     .so  ()
2666);
2667`endif
2668
2669//=========================================================================================
2670//      DONE/RETRY
2671//=========================================================================================
2672
2673// PC/nPC will be updated by pc/npc from IFU,
2674// OR, Done/Retry which reads TSA in E stage. Execution of Done/Retry will
2675// put pc/npc temporarily in bypass flop which will then update actual pc/npc
2676// in g. Update of pc/npc by inst_in_w or done/retry thus becomes aligned.
2677// recoded due to lint violations - individualized the components
2678/*
2679dff_s #(`TLU_TSA_WIDTH) poptsa_m (
2680    .din (tsa_rdata[`TLU_TSA_WIDTH-1:0]),
2681        .q   (tsa_data_m[`TLU_TSA_WIDTH-1:0]),
2682    .clk (clk),
2683    .se  (se),       
2684    .si  (),         
2685    .so  ()
2686);
2687//
2688// added, modified for hypervisor and timing
2689assign dnrtry_pstate_m =
2690       {2'b0,  // old IG, MG - replaced by global register
2691        tsa_data_m[`TSA_PSTATE_VRANGE2_HI:`TSA_PSTATE_VRANGE2_LO],
2692        2'b0,  // memory model has been change to TSO only - bug 2588
2693        1'b0,  // old RED - replaced by hpstate.red
2694        tsa_data_m[`TSA_PSTATE_VRANGE1_HI:`TSA_PSTATE_VRANGE1_LO],
2695        1'b0}; // old AG - replaced by global register
2696       
2697dff_s #(12) dff_pstate_g (
2698    .din (dnrtry_pstate_m[`PSTATE_TRUE_WIDTH-1:0]),
2699        .q   (dnrtry_pstate[`PSTATE_TRUE_WIDTH-1:0]),
2700    .clk (clk),
2701    .se  (se),       
2702    .si  (),         
2703    .so  ()
2704    );
2705*/
2706// recoded due to lint violation
2707
2708dff_s #(`WSR_PSTATE_VR_WIDTH) dff_dnrtry_pstate_m (
2709    .din ({tsa_rdata[`TSA_PSTATE_VRANGE2_HI:`TSA_PSTATE_VRANGE2_LO],
2710           tsa_rdata[`TSA_PSTATE_VRANGE1_HI:`TSA_PSTATE_VRANGE1_LO]}),
2711        .q   (dnrtry_pstate_m[`WSR_PSTATE_VR_WIDTH-1:0]),
2712    .clk (clk),
2713    .se  (se),       
2714    .si  (),         
2715    .so  ()
2716);
2717       
2718dff_s #(`WSR_PSTATE_VR_WIDTH) dff_pstate_g (
2719    .din (dnrtry_pstate_m[`WSR_PSTATE_VR_WIDTH-1:0]),
2720        .q   (dnrtry_pstate_g[`WSR_PSTATE_VR_WIDTH-1:0]),
2721    .clk (clk),
2722    .se  (se),       
2723    .si  (),         
2724    .so  ()
2725);
2726
2727dff_s #(`WSR_PSTATE_VR_WIDTH) dff_pstate_w2 (
2728    .din (dnrtry_pstate_g[`WSR_PSTATE_VR_WIDTH-1:0]),
2729        .q   (dnrtry_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),
2730    .clk (clk),
2731    .se  (se),       
2732    .si  (),         
2733    .so  ()
2734);
2735// assign dnrtry_pstate_m[`WSR_PSTATE_VR_WIDTH-1:0] =
2736//        {tsa_data_m[`TSA_PSTATE_VRANGE2_HI:`TSA_PSTATE_VRANGE2_LO],
2737//         tsa_data_m[`TSA_PSTATE_VRANGE1_HI:`TSA_PSTATE_VRANGE1_LO]};
2738//
2739// reading hpstate from tsa for recovery
2740// recoded due to lint violations
2741
2742dff_s #(`TSA_HTSTATE_WIDTH) dff_tsa_dnrtry_hpstate_m (
2743    // .din (tsa_rdata[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO]),
2744    .din (tsa_rdata[`TLU_RD_HTSTATE_HI:`TLU_RD_HTSTATE_LO]), 
2745        .q   (tsa_dnrtry_hpstate_m[`TSA_HTSTATE_WIDTH-1:0]),
2746    .clk (clk),
2747    .se  (se),
2748    .si  (),         
2749    .so  ()
2750);
2751
2752dff_s #(`TSA_HTSTATE_WIDTH) dff_tsa_dnrtry_hpstate_g (
2753//     .din (tsa_data_m[`TLU_HTSTATE_HI:`TLU_HTSTATE_LO]),
2754    .din (tsa_dnrtry_hpstate_m[`TSA_HTSTATE_WIDTH-1:0]),
2755        .q   (tsa_dnrtry_hpstate_g[`TSA_HTSTATE_WIDTH-1:0]),
2756    .clk (clk),
2757    .se  (se),       
2758    .si  (),         
2759    .so  ()
2760);
2761//
2762// added for timing
2763dff_s #(`TSA_HTSTATE_WIDTH) dff_tsa_dnrtry_hpstate_w2 (
2764    .din (tsa_dnrtry_hpstate_g[`TSA_HTSTATE_WIDTH-1:0]),
2765        .q   (tsa_dnrtry_hpstate_w2[`TSA_HTSTATE_WIDTH-1:0]),
2766    .clk (clk),
2767    .se  (se),       
2768    .si  (),         
2769    .so  ()
2770);
2771
2772// reading value of original global registers from tsa for recovery
2773// recoded due to lint cleanup
2774// assign dnrtry_global_m = tsa_data_m[`TLU_GL_HI:`TLU_GL_LO];
2775
2776dff_s #(`TSA_GLOBAL_WIDTH) dff_dnrtry_global_m (
2777    .din (tsa_rdata[`TLU_GL_HI:`TLU_GL_LO]),
2778        .q   (dnrtry_global_m[`TSA_GLOBAL_WIDTH-1:0]),
2779    .clk (clk),
2780    .se  (se),       
2781    .si  (),         
2782    .so  ()
2783);
2784
2785dff_s #(`TSA_GLOBAL_WIDTH) dff_global_g (
2786    .din (dnrtry_global_m[`TSA_GLOBAL_WIDTH-1:0]),
2787        .q   (tlu_dnrtry_global_g[`TSA_GLOBAL_WIDTH-1:0]),
2788    .clk (clk),
2789    .se  (se), 
2790    .si  (),   
2791    .so  ()
2792);
2793//
2794/* logic moved to tlu_misctl
2795// added due to lint violations
2796dff_s #(47) dff_tsa_pc_m (
2797    .din (tsa_rdata[`TLU_PC_HI:`TLU_PC_LO]),
2798        .q   (tsa_pc_m[46:0]),
2799    .clk (clk),
2800    .se  (se),       
2801    .si  (),         
2802    .so  ()
2803);
2804
2805dff_s #(47) dff_tsa_npc_m (
2806    .din (tsa_rdata[`TLU_NPC_HI:`TLU_NPC_LO]),
2807        .q   (tsa_npc_m[46:0]),
2808    .clk (clk),
2809    .se  (se),       
2810    .si  (),         
2811    .so  ()
2812);
2813
2814// pstate may have to be staged by an additional cycle.
2815assign dnrtry_pc[48:0]  = {tsa_pc_m[46:0],2'b00};
2816assign dnrtry_npc[48:0] = {tsa_npc_m[46:0],2'b00};
2817*/
2818
2819//=========================================================================================
2820//      PC/nPC
2821//=========================================================================================
2822
2823// TRUE PC/NPC. AN INSTRUCTION'S PC/NPC IS VISIBLE IN W2.
2824// F:S:D:E:M:G:W2
2825// Modified by Done/Retry and inst
2826
2827/* logic moved to tlu_misctl
2828// On done, npc will become pc.
2829// modified due to bug 3017
2830// pc width increase from 48 -> 49 bits
2831mux3ds #(49) finalpc_sel_m (
2832       .in0  (dnrtry_pc[48:0]),         
2833           .in1  (dnrtry_npc[48:0]),
2834           .in2  (ifu_tlu_pc_m[48:0]),
2835       .sel0 (tlu_retry_inst_m),       
2836           .sel1 (tlu_done_inst_m),
2837           .sel2 (tlu_dnrtry_inst_m_l),
2838       .dout (pc_new[48:0])
2839);
2840// On done, npc will stay npc. The valid to the IFU will
2841// not be signaled along with npc for a done.
2842// modified due to bug 3017
2843// pc width increase from 48 -> 49 bits
2844mux2ds #(49) finalnpc_sel_m (
2845       .in0  (dnrtry_npc[48:0]),       
2846       .in1  (ifu_tlu_npc_m[48:0]),
2847       .sel0 (~tlu_dnrtry_inst_m_l),   
2848       .sel1 (tlu_dnrtry_inst_m_l),
2849       .dout (npc_new[48:0])
2850);
2851
2852dff_s #(49) dff_pc_new_w (
2853    .din (pc_new[48:0]),       
2854    .q   (pc_new_w[48:0]),
2855    .clk (clk),
2856    .se  (se),       
2857    .si  (),         
2858    .so  ()
2859);
2860
2861dff_s #(49) dff_npc_new_w (
2862    .din (npc_new[48:0]),       
2863    .q   (npc_new_w[48:0]),
2864    .clk (clk),
2865    .se  (se),       
2866    .si  (),         
2867    .so  ()
2868);
2869*/
2870//
2871`ifdef FPGA_SYN_CLK_EN
2872`else
2873clken_buf clkbf_pc0 (
2874    .rclk  (clk),
2875    .enb_l (tlu_update_pc_l_w[0]),
2876        .tmb_l (se_l),
2877        .clk   (pc0_clk)
2878);     
2879`endif
2880
2881`ifdef FPGA_SYN_CLK_EN
2882`else
2883clken_buf clkbf_pc1 (
2884    .rclk  (clk),
2885    .enb_l (tlu_update_pc_l_w[1]),
2886        .tmb_l (se_l),
2887        .clk   (pc1_clk)
2888);     
2889`endif
2890
2891`ifdef FPGA_SYN_CLK_EN
2892`else
2893clken_buf clkbf_pc2 (
2894    .rclk  (clk),
2895    .enb_l (tlu_update_pc_l_w[2]),
2896        .tmb_l (se_l),
2897        .clk   (pc2_clk)
2898);     
2899`endif
2900
2901`ifdef FPGA_SYN_CLK_EN
2902`else
2903clken_buf clkbf_pc3 (
2904    .rclk  (clk),
2905    .enb_l (tlu_update_pc_l_w[3]),
2906        .tmb_l (se_l),
2907        .clk   (pc3_clk)
2908);     
2909`endif 
2910//
2911// modified for bug 3017
2912// all pc width has been increased from 48 -> 49 bits
2913// Thread 0
2914//
2915`ifdef FPGA_SYN_CLK_DFF
2916dffe_s #(49) pc0_true (
2917    .din (tlu_pc_new_w[48:0]), 
2918    .q   (true_pc0[48:0]),
2919    .en (~(tlu_update_pc_l_w[0])), .clk(clk),
2920    .se  (se),       
2921    .si  (),         
2922    .so  ()
2923);
2924`else
2925dff_s #(49) pc0_true (
2926    .din (tlu_pc_new_w[48:0]), 
2927    .q   (true_pc0[48:0]),
2928    .clk (pc0_clk),
2929    .se  (se),       
2930    .si  (),         
2931    .so  ()
2932);
2933`endif
2934
2935// update_pc will be used for both pc and npc - in this case
2936// npc will contain gibberish but it's okay.
2937// modified to avert area growth
2938`ifdef FPGA_SYN_CLK_DFF
2939dffe_s #(49) npc0_true (
2940    .din (tlu_npc_new_w[48:0]),         
2941    .(true_npc0[48:0]),
2942    .en (~(tlu_update_pc_l_w[0])), .clk(clk),
2943    .se  (se),       
2944    .si  (),         
2945    .so  ()
2946);
2947`else
2948dff_s #(49) npc0_true (
2949    .din (tlu_npc_new_w[48:0]),         
2950    .(true_npc0[48:0]),
2951    .clk (pc0_clk),
2952    .se  (se),       
2953    .si  (),         
2954    .so  ()
2955);
2956`endif
2957//
2958// THREAD1
2959//
2960`ifdef FPGA_SYN_CLK_DFF
2961dffe_s #(49) pc1_true (
2962    .din (tlu_pc_new_w[48:0]), 
2963    .q   (true_pc1[48:0]),
2964    .en (~(tlu_update_pc_l_w[1])), .clk(clk),
2965    .se  (se),       
2966    .si  (),         
2967    .so  ()
2968);
2969`else
2970dff_s #(49) pc1_true (
2971    .din (tlu_pc_new_w[48:0]), 
2972    .q   (true_pc1[48:0]),
2973    .clk (pc1_clk),
2974    .se  (se),       
2975    .si  (),         
2976    .so  ()
2977);
2978`endif
2979
2980// update_pc will be used for both pc and npc - in this case
2981// npc will contain gibberish but it's okay.
2982`ifdef FPGA_SYN_CLK_DFF
2983dffe_s #(49) npc1_true (
2984    .din (tlu_npc_new_w[48:0]),         
2985    .q   (true_npc1[48:0]),
2986    .en (~(tlu_update_pc_l_w[1])), .clk(clk),
2987    .se  (se),       
2988    .si  (),         
2989    .so  ()
2990);
2991`else
2992dff_s #(49) npc1_true (
2993    .din (tlu_npc_new_w[48:0]),         
2994    .q   (true_npc1[48:0]),
2995    .clk (pc1_clk),
2996    .se  (se),       
2997    .si  (),         
2998    .so  ()
2999);
3000`endif
3001//
3002// THREAD2
3003//
3004`ifdef FPGA_SYN_CLK_DFF
3005dffe_s #(49) pc2_true (
3006    .din (tlu_pc_new_w[48:0]), 
3007    .q   (true_pc2[48:0]),
3008    .en (~(tlu_update_pc_l_w[2])), .clk(clk),
3009    .se  (se),       
3010    .si  (),         
3011    .so  ()
3012);
3013`else
3014dff_s #(49) pc2_true (
3015    .din (tlu_pc_new_w[48:0]), 
3016    .q   (true_pc2[48:0]),
3017    .clk (pc2_clk),
3018    .se  (se),       
3019    .si  (),         
3020    .so  ()
3021);
3022`endif
3023
3024// update_pc will be used for both pc and npc - in this case
3025// npc will contain gibberish but it's okay.
3026`ifdef FPGA_SYN_CLK_DFF
3027dffe_s #(49) npc2_true (
3028    .din (tlu_npc_new_w[48:0]),         
3029    .q   (true_npc2[48:0]),
3030    .en (~(tlu_update_pc_l_w[2])), .clk(clk),
3031    .se  (se),       
3032    .si  (),         
3033    .so  ()
3034);
3035`else
3036dff_s #(49) npc2_true (
3037    .din (tlu_npc_new_w[48:0]),         
3038    .q   (true_npc2[48:0]),
3039    .clk (pc2_clk),
3040    .se  (se),       
3041    .si  (),         
3042    .so  ()
3043);
3044`endif
3045//
3046// THREAD3
3047//
3048`ifdef FPGA_SYN_CLK_DFF
3049dffe_s #(49) pc3_true (
3050    .din (tlu_pc_new_w[48:0]), 
3051    .q   (true_pc3[48:0]),
3052    .en (~(tlu_update_pc_l_w[3])), .clk(clk),
3053    .se  (se),       
3054    .si  (),         
3055    .so  ()
3056);
3057`else
3058dff_s #(49) pc3_true (
3059    .din (tlu_pc_new_w[48:0]), 
3060    .q   (true_pc3[48:0]),
3061    .clk (pc3_clk),
3062    .se  (se),       
3063    .si  (),         
3064    .so  ()
3065);
3066`endif
3067
3068// update_pc will be used for both pc and npc - in this case
3069// npc will contain gibberish but it's okay.
3070`ifdef FPGA_SYN_CLK_DFF
3071dffe_s #(49) npc3_true (
3072    .din (tlu_npc_new_w[48:0]),         
3073    .q   (true_npc3[48:0]),
3074    .en (~(tlu_update_pc_l_w[3])), .clk(clk),
3075    .se  (se),       
3076    .si  (),         
3077    .so  ()
3078);
3079`else
3080dff_s #(49) npc3_true (
3081    .din (tlu_npc_new_w[48:0]),         
3082    .q   (true_npc3[48:0]),
3083    .clk (pc3_clk),
3084    .se  (se),       
3085    .si  (),         
3086    .so  ()
3087);
3088`endif
3089
3090//=========================================================================================
3091//      Generating Trap Vector
3092//=========================================================================================
3093//
3094// Normal Trap Processing.
3095mux2ds mux_pc_bit15_sel (
3096    .in0  (tlu_tl_gt_0_w2),
3097    .in1  (htba_data[0]),
3098    .sel0  (~tlu_trap_hpstate_enb),
3099    .sel1  (tlu_trap_hpstate_enb),
3100    .dout (pc_bit15_sel)
3101);
3102//
3103// modified to help speed up simulation time
3104//
3105assign tlu_rstvaddr_base[33:0] = `RSTVADDR_BASE;
3106mux3ds #(34) nrmlpc_sel_w2 (
3107       .in0  (tlu_rstvaddr_base[33:0]),
3108           .in1  ({tba_data[32:0], tlu_tl_gt_0_w2}),
3109           .in2  ({htba_data[33:1], pc_bit15_sel}),
3110       .sel0 (tlu_pc_mxsel_w2[0]),
3111           .sel1 (tlu_pc_mxsel_w2[1]),
3112           .sel2 (tlu_pc_mxsel_w2[2]),
3113       .dout (partial_trap_pc_w2[33:0])
3114);
3115
3116assign tlu_partial_trap_pc_w1[33:0] = partial_trap_pc_w2[33:0]; 
3117
3118// restore pc/npc select
3119// true pc muxed into restore pc; previously restore_pcx was muxed in.
3120// modified due to bug 3017
3121`ifdef FPGA_SYN_1THREAD
3122   assign restore_pc_w2[48:0] = true_pc0[48:0];
3123   assign restore_npc_w2[48:0] = true_npc0[48:0];
3124`else
3125   
3126mux4ds  #(98) trprsel (
3127        .in0    ({true_pc0[48:0],true_npc0[48:0]}),
3128        .in1    ({true_pc1[48:0],true_npc1[48:0]}),
3129        .in2    ({true_pc2[48:0],true_npc2[48:0]}),
3130        .in3    ({true_pc3[48:0],true_npc3[48:0]}),
3131        .sel0   (tlu_thrd_wsel_w2[0]),
3132        .sel1   (tlu_thrd_wsel_w2[1]),
3133        .sel2   (tlu_thrd_wsel_w2[2]),
3134        .sel3   (tlu_thrd_wsel_w2[3]),
3135        .dout   ({restore_pc_w2[48:0],restore_npc_w2[48:0]})
3136);
3137`endif // !`ifdef FPGA_SYN_1THREAD
3138   
3139//
3140// the matching of the w1 and w2 is intentional
3141assign tlu_restore_pc_w1[48:0]  = restore_pc_w2[48:0];
3142assign tlu_restore_npc_w1[48:0] = restore_npc_w2[48:0];
3143
3144//=========================================================================================
3145//      TAP PC OBSERVABILITY
3146//=========================================================================================
3147//
3148// modified due to spec change
3149// shadow scan
3150// thread 0 data
3151assign sscan_data_test0[`TDP_SSCAN_WIDTH-1:0] = 
3152           {true_hpstate0[2:0], 
3153            true_pstate0[`PSTATE_PRIV],
3154            true_pstate0[`PSTATE_IE],
3155            true_pc0[47:2]};
3156//
3157// thread 1 data
3158assign sscan_data_test1[`TDP_SSCAN_WIDTH-1:0] = 
3159           {true_hpstate1[2:0], 
3160            true_pstate1[`PSTATE_PRIV],
3161            true_pstate1[`PSTATE_IE],
3162            true_pc1[47:2]};
3163//
3164// thread 2 data
3165assign sscan_data_test2[`TDP_SSCAN_WIDTH-1:0] = 
3166           {true_hpstate2[2:0], 
3167            true_pstate2[`PSTATE_PRIV],
3168            true_pstate2[`PSTATE_IE],
3169            true_pc2[47:2]};
3170//
3171// thread 3 data
3172assign sscan_data_test3[`TDP_SSCAN_WIDTH-1:0] = 
3173           {true_hpstate3[2:0], 
3174            true_pstate3[`PSTATE_PRIV],
3175            true_pstate3[`PSTATE_IE],
3176            true_pc3[47:2]};
3177//
3178`ifdef FPGA_SYN_1THREAD
3179   assign tdp_sscan_test_data[`TDP_SSCAN_WIDTH-1:0] = sscan_data_test0[`TDP_SSCAN_WIDTH-1:0];
3180`else
3181   
3182mux4ds #(`TDP_SSCAN_WIDTH) mx_sscan_test_data (
3183       .in0  (sscan_data_test0[`TDP_SSCAN_WIDTH-1:0]),
3184       .in1  (sscan_data_test1[`TDP_SSCAN_WIDTH-1:0]),
3185       .in2  (sscan_data_test2[`TDP_SSCAN_WIDTH-1:0]),
3186       .in3  (sscan_data_test3[`TDP_SSCAN_WIDTH-1:0]),
3187       .sel0 (sscan_tid_sel[0]),
3188       .sel1 (sscan_tid_sel[1]),
3189       .sel2 (sscan_tid_sel[2]),
3190       .sel3 (sscan_tid_sel[3]),
3191       .dout (tdp_sscan_test_data[`TDP_SSCAN_WIDTH-1:0])
3192); 
3193`endif // !`ifdef FPGA_SYN_1THREAD
3194   
3195assign sscan_tid_sel[`TLU_THRD_NUM-1:0] = ctu_sscan_tid[`TLU_THRD_NUM-1:0]; 
3196
3197assign tlu_sscan_test_data[`TDP_SSCAN_WIDTH-1:0] =
3198          tdp_sscan_test_data[`TDP_SSCAN_WIDTH-1:0]; 
3199
3200//=========================================================================================
3201//      PSTATE for Threads
3202//=========================================================================================
3203
3204// pstate needs to be updated on a trap. Assume for now that only non-RED state instruction
3205// related traps are handled.
3206
3207// Normal traps, non-red mode.
3208assign pstate_priv_set = tlu_select_tba_w2 | local_rst | tlu_select_redmode;
3209//
3210assign pstate_priv_thrd_set[0] = pstate_priv_set | ~true_hpstate0[`HPSTATE_ENB];
3211assign pstate_priv_thrd_set[1] = pstate_priv_set | ~true_hpstate1[`HPSTATE_ENB];
3212assign pstate_priv_thrd_set[2] = pstate_priv_set | ~true_hpstate2[`HPSTATE_ENB];
3213assign pstate_priv_thrd_set[3] = pstate_priv_set | ~true_hpstate3[`HPSTATE_ENB];
3214//
3215// modified for bug 3349
3216assign pstate_priv_update_w2[0] = 
3217       ~(tlu_update_pstate_l_w2[0] & 
3218        (true_hpstate0[`HPSTATE_ENB] | tlu_update_hpstate_l_w2[0])) |
3219        (~wsr_data_w2[`WSR_HPSTATE_ENB] & tlu_hpstate_din_sel0[1]);
3220assign pstate_priv_update_w2[1] = 
3221       ~(tlu_update_pstate_l_w2[1] & 
3222        (true_hpstate1[`HPSTATE_ENB] | tlu_update_hpstate_l_w2[1])) |
3223        (~wsr_data_w2[`WSR_HPSTATE_ENB] & tlu_hpstate_din_sel1[1]);
3224assign pstate_priv_update_w2[2] = 
3225       ~(tlu_update_pstate_l_w2[2] & 
3226        (true_hpstate2[`HPSTATE_ENB] | tlu_update_hpstate_l_w2[2])) |
3227        (~wsr_data_w2[`WSR_HPSTATE_ENB] & tlu_hpstate_din_sel2[1]);
3228assign pstate_priv_update_w2[3] = 
3229       ~(tlu_update_pstate_l_w2[3] & 
3230        (true_hpstate3[`HPSTATE_ENB] | tlu_update_hpstate_l_w2[3])) |
3231        (~wsr_data_w2[`WSR_HPSTATE_ENB] & tlu_hpstate_din_sel3[1]);
3232//
3233assign hpstate_priv_update_w2[0] = 
3234       ~(tlu_update_hpstate_l_w2[0] & 
3235        (true_hpstate0[`HPSTATE_ENB] | tlu_update_pstate_l_w2[0]));
3236assign hpstate_priv_update_w2[1] = 
3237       ~(tlu_update_hpstate_l_w2[1] & 
3238        (true_hpstate1[`HPSTATE_ENB] | tlu_update_pstate_l_w2[1]));
3239assign hpstate_priv_update_w2[2] = 
3240       ~(tlu_update_hpstate_l_w2[2] & 
3241        (true_hpstate2[`HPSTATE_ENB] | tlu_update_pstate_l_w2[2]));
3242assign hpstate_priv_update_w2[3] = 
3243       ~(tlu_update_hpstate_l_w2[3] & 
3244        (true_hpstate3[`HPSTATE_ENB] | tlu_update_pstate_l_w2[3]));
3245//
3246// added for bug 2161 and modified for bug 2161
3247assign hpstate_enb_set[0] = true_hpstate0[`HPSTATE_ENB] & ~(local_rst | tlu_select_redmode); 
3248assign hpstate_enb_set[1] = true_hpstate1[`HPSTATE_ENB] & ~(local_rst | tlu_select_redmode); 
3249assign hpstate_enb_set[2] = true_hpstate2[`HPSTATE_ENB] & ~(local_rst | tlu_select_redmode);
3250assign hpstate_enb_set[3] = true_hpstate3[`HPSTATE_ENB] & ~(local_rst | tlu_select_redmode);
3251
3252// added for hpstate.ibe ECO
3253// modified due to timing - tlu_ibrkpt_trap_g has been delayed one stage to tlu_ibrkpt_trap_w2
3254assign hpstate_ibe_set[0] = 
3255           true_hpstate0[`HPSTATE_IBE] & ~(local_rst | tlu_select_redmode | tlu_ibrkpt_trap_w2);
3256assign hpstate_ibe_set[1] = 
3257           true_hpstate1[`HPSTATE_IBE] & ~(local_rst | tlu_select_redmode | tlu_ibrkpt_trap_w2);
3258assign hpstate_ibe_set[2] = 
3259           true_hpstate2[`HPSTATE_IBE] & ~(local_rst | tlu_select_redmode | tlu_ibrkpt_trap_w2);
3260assign hpstate_ibe_set[3] = 
3261           true_hpstate3[`HPSTATE_IBE] & ~(local_rst | tlu_select_redmode | tlu_ibrkpt_trap_w2);
3262//
3263// added due to TLZ spec change
3264// modified for bug 3505
3265assign hpstate_tlz_set[0] = true_hpstate0[`HPSTATE_TLZ] & ~(local_rst | tlu_select_redmode);
3266assign hpstate_tlz_set[1] = true_hpstate1[`HPSTATE_TLZ] & ~(local_rst | tlu_select_redmode);
3267assign hpstate_tlz_set[2] = true_hpstate2[`HPSTATE_TLZ] & ~(local_rst | tlu_select_redmode);
3268assign hpstate_tlz_set[3] = true_hpstate3[`HPSTATE_TLZ] & ~(local_rst | tlu_select_redmode);
3269//
3270// thread 0
3271assign tlu_select_tle[0] =
3272           tlu_pstate_tle[0] & ~(tlu_select_redmode);
3273// modified for timing and bug 3417
3274assign tlu_select_cle[0] =
3275           tlu_select_tle[0] & 
3276          (tlu_select_tba_w2 | ~true_hpstate0[`HPSTATE_ENB]); 
3277//         tlu_select_tle[0] & tlu_select_tba_w2;
3278//
3279// modified for timing and width cleanup
3280/*
3281assign  ntrap_pstate0[`PSTATE_TRUE_WIDTH-1:0] =
3282    {2'b0,  // tlu_select_int_global - replaced by gl register 
3283                // tlu_select_mmu_global - replaced by gl register
3284         tlu_select_cle[0], // cle<-tle, or 0   
3285         tlu_select_tle[0], // keep old tle, or 0
3286     2'b0,
3287     1'b0,  // tlu_select_redmode - replaced by hpstate.red
3288         1'b1,  // fp turned on
3289         1'b0,  // address masking turned off
3290         pstate_priv_thrd_set[0], // enter priv mode for priv traps
3291         1'b0,  // interrupts disabled
3292         1'b0}; // tlu_select_alt_global - replaced by gl register
3293*/
3294assign  ntrap_pstate0[`WSR_PSTATE_VR_WIDTH-1:0] = 
3295    {tlu_select_cle[0], // cle<-tle, or 0       
3296         tlu_select_tle[0], // keep old tle, or 0
3297         1'b1,  // fp turned on
3298         1'b0,  // address masking turned off
3299         pstate_priv_thrd_set[0], // enter priv mode for priv traps
3300         1'b0}; // interrupts disabled
3301//
3302// thread 1
3303assign tlu_select_tle[1] =
3304           tlu_pstate_tle[1] & ~(tlu_select_redmode);
3305// modified for timing and bug 3417
3306assign tlu_select_cle[1] =
3307           tlu_select_tle[1] & 
3308          (tlu_select_tba_w2 | ~true_hpstate1[`HPSTATE_ENB]); 
3309//           tlu_select_tle[1] & tlu_select_tba_w2;
3310//
3311// modified due to timing
3312/*
3313assign  ntrap_pstate1[`PSTATE_TRUE_WIDTH-1:0] =
3314    {2'b0,  // tlu_select_int_global - replaced by gl register 
3315                // tlu_select_mmu_global - replaced by gl register
3316         tlu_select_cle[1], // cle<-tle, or 0   
3317         tlu_select_tle[1], // keep old tle, or 0
3318     2'b0,
3319     1'b0,  // tlu_select_redmode - replaced by hpstate.red
3320         1'b1,  // fp turned on
3321         1'b0,  // address masking turned off
3322         pstate_priv_thrd_set[1], // enter priv mode for priv traps
3323         1'b0,  // interrupts disabled
3324         1'b0}; // tlu_select_alt_global - replaced by gl register
3325*/
3326assign  ntrap_pstate1[`WSR_PSTATE_VR_WIDTH-1:0] = 
3327    {tlu_select_cle[1], // cle<-tle, or 0       
3328         tlu_select_tle[1], // keep old tle, or 0
3329         1'b1,  // fp turned on
3330         1'b0,  // address masking turned off
3331         pstate_priv_thrd_set[1], // enter priv mode for priv traps
3332         1'b0}; // interrupts disabled//
3333//
3334// thread 2
3335assign tlu_select_tle[2] =
3336           tlu_pstate_tle[2] & ~(tlu_select_redmode);
3337// modified for timing and bug 3417
3338assign tlu_select_cle[2] =
3339           tlu_select_tle[2] & 
3340          (tlu_select_tba_w2 | ~true_hpstate2[`HPSTATE_ENB]); 
3341//           tlu_select_tle[2] & tlu_select_tba_w2;
3342//
3343// modified for timing and width cleanup
3344/*
3345assign  ntrap_pstate2[`PSTATE_TRUE_WIDTH-1:0] =
3346    {2'b0,  // tlu_select_int_global - replaced by gl register 
3347                // tlu_select_mmu_global - replaced by gl register
3348         tlu_select_cle[2], // cle<-tle, or 0   
3349         tlu_select_tle[2], // keep old tle, or 0
3350     2'b0,
3351     1'b0,  // tlu_select_redmode - replaced by hpstate.red
3352         1'b1,  // fp turned on
3353         1'b0,  // address masking turned off
3354         pstate_priv_thrd_set[2], // enter priv mode for priv traps
3355         1'b0,  // interrupts disabled
3356         1'b0}; // tlu_select_alt_global - replaced by gl register
3357*/
3358assign  ntrap_pstate2[`WSR_PSTATE_VR_WIDTH-1:0] = 
3359    {tlu_select_cle[2], // cle<-tle, or 0       
3360         tlu_select_tle[2], // keep old tle, or 0
3361         1'b1,  // fp turned on
3362         1'b0,  // address masking turned off
3363         pstate_priv_thrd_set[2], // enter priv mode for priv traps
3364         1'b0}; // interrupts disabled//
3365//
3366// thread 3
3367assign tlu_select_tle[3] =
3368           tlu_pstate_tle[3] & ~(tlu_select_redmode);
3369// modified for timing and bug 3417
3370assign tlu_select_cle[3] =
3371           tlu_select_tle[3] & 
3372          (tlu_select_tba_w2 | ~true_hpstate3[`HPSTATE_ENB]); 
3373//           tlu_select_tle[3] & tlu_select_tba_w2;
3374//
3375// modified for timing
3376/*
3377assign  ntrap_pstate3[`PSTATE_TRUE_WIDTH-1:0] =
3378    {2'b0,  // tlu_select_int_global - replaced by gl register 
3379                // tlu_select_mmu_global - replaced by gl register
3380         tlu_select_cle[3], // cle<-tle, or 0   
3381         tlu_select_tle[3], // keep old tle, or 0
3382     2'b0,
3383     1'b0,  // tlu_select_redmode - replaced by hpstate.red
3384         1'b1,  // fp turned on
3385         1'b0,  // address masking turned off
3386         pstate_priv_thrd_set[3], // enter priv mode for priv traps
3387         1'b0,  // interrupts disabled
3388         1'b0}; // tlu_select_alt_global - replaced by gl register
3389*/
3390assign  ntrap_pstate3[`WSR_PSTATE_VR_WIDTH-1:0] = 
3391    {tlu_select_cle[3], // cle<-tle, or 0       
3392         tlu_select_tle[3], // keep old tle, or 0
3393         1'b1,  // fp turned on
3394         1'b0,  // address masking turned off
3395         pstate_priv_thrd_set[3], // enter priv mode for priv traps
3396         1'b0}; // interrupts disabled//
3397
3398// Clock Enable Buffers
3399//
3400`ifdef FPGA_SYN_CLK_EN
3401`else
3402clken_buf clkbf_ps0 (
3403    .rclk  (clk),
3404        .enb_l (tlu_update_pstate_l_w2[0]),
3405        .tmb_l (se_l),
3406        .clk   (pstate0_clk)
3407);
3408`endif
3409
3410`ifdef FPGA_SYN_CLK_EN
3411`else
3412clken_buf clkbf_ps1 (
3413    .rclk  (clk),
3414        .enb_l (tlu_update_pstate_l_w2[1]),
3415        .tmb_l (se_l),
3416        .clk   (pstate1_clk)
3417);
3418`endif
3419
3420`ifdef FPGA_SYN_CLK_EN
3421`else
3422clken_buf clkbf_ps2 (
3423    .rclk  (clk),
3424        .enb_l (tlu_update_pstate_l_w2[2]),
3425        .tmb_l (se_l),
3426        .clk   (pstate2_clk)
3427);
3428`endif
3429
3430`ifdef FPGA_SYN_CLK_EN
3431`else
3432clken_buf clkbf_ps3 (
3433    .rclk  (clk),
3434        .enb_l (tlu_update_pstate_l_w2[3]),
3435        .tmb_l (se_l),
3436        .clk   (pstate3_clk)
3437);
3438`endif
3439//
3440// added for hypervisor support
3441// clock enable buffers for updating the hpstate registers
3442//
3443`ifdef FPGA_SYN_CLK_EN
3444`else
3445clken_buf clkbf_hps0 (
3446    .rclk  (clk),
3447        .enb_l (tlu_update_hpstate_l_w2[0]),
3448        .tmb_l (se_l),
3449        .clk   (hpstate0_clk)
3450);
3451`endif
3452
3453`ifdef FPGA_SYN_CLK_EN
3454`else
3455clken_buf clkbf_hps1 (
3456    .rclk  (clk),
3457        .enb_l (tlu_update_hpstate_l_w2[1]),
3458        .tmb_l (se_l),
3459        .clk   (hpstate1_clk)
3460);
3461`endif
3462
3463`ifdef FPGA_SYN_CLK_EN
3464`else
3465clken_buf clkbf_hps2 (
3466    .rclk  (clk),
3467        .enb_l (tlu_update_hpstate_l_w2[2]),
3468        .tmb_l (se_l),
3469        .clk   (hpstate2_clk)
3470);
3471`endif
3472
3473`ifdef FPGA_SYN_CLK_EN
3474`else
3475clken_buf clkbf_hps3 (
3476    .rclk  (clk),
3477        .enb_l (tlu_update_hpstate_l_w2[3]),
3478        .tmb_l (se_l),
3479        .clk   (hpstate3_clk)
3480);
3481`endif
3482// assign the initial value of hpstate.red mode
3483//
3484// modified for bug 1893
3485// assign hpstate_redmode =
3486//            (local_rst)? 1'b1: tlu_select_redmode;
3487assign hpstate_redmode = 
3488           local_rst | (~local_rst & tlu_select_redmode); 
3489//
3490// extracting hpstate from wsr_data
3491//
3492// modified for timing tlu_wsr_data_w -> wsr_data_w2
3493assign wsr_data_hpstate_w2[`TLU_HPSTATE_WIDTH-1:0] = 
3494     {wsr_data_w2[`WSR_HPSTATE_IBE],
3495      wsr_data_w2[`WSR_HPSTATE_ENB],
3496      wsr_data_w2[`WSR_HPSTATE_RED],
3497      wsr_data_w2[`WSR_HPSTATE_PRIV],
3498      wsr_data_w2[`WSR_HPSTATE_TLZ]
3499     };
3500//
3501// added or modified for hypervisor support
3502// modified due to timing
3503/*
3504assign wsr_data_pstate_g[`PSTATE_TRUE_WIDTH-1:0] =
3505    {2'b0,  // old IG, MG - replaced by global register
3506     tlu_wsr_data_w[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO],
3507     2'b0,  // memory model has been change to TSO only - bug 2588
3508     1'b0,  // old red, - replaced by hpstate.red
3509     tlu_wsr_data_w[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO],
3510     1'b0};  // old AG - replaced by global register
3511
3512assign wsr_data_pstate_g[`WSR_PSTATE_VR_WIDTH-1:0] =
3513       {tlu_wsr_data_w[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO],
3514        tlu_wsr_data_w[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
3515*/
3516assign wsr_data_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0] = 
3517       {wsr_data_w2[`PSTATE_VRANGE2_HI:`PSTATE_VRANGE2_LO],
3518        wsr_data_w2[`PSTATE_VRANGE1_HI:`PSTATE_VRANGE1_LO]};
3519//
3520// THREAD0
3521// added for bug 1575
3522// modified for bug 2584
3523// assign tlu_pstate_nt_sel0 = ~|(tlu_pstate_din_sel0[1:0]);
3524assign tlu_pstate_nt_sel0 = 
3525          ~(tlu_pstate_din_sel0[0] | tlu_pstate_wsr_sel0);
3526//
3527// modified for bug 3349
3528assign tlu_pstate_wsr_sel0 = 
3529           tlu_pstate_din_sel0[1] | 
3530           (~(true_hpstate0[`HPSTATE_ENB] & wsr_data_w2[`WSR_HPSTATE_ENB]) &
3531              tlu_hpstate_din_sel0[1]);
3532//            (~true_hpstate0[`HPSTATE_ENB] & tlu_hpstate_din_sel0[1]);
3533
3534mux3ds #(`WSR_PSTATE_VR_WIDTH) mux_restore_pstate0(
3535       .in0  (dnrtry_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),     
3536           .in1  (wsr_data_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),
3537           .in2  (ntrap_pstate0[`WSR_PSTATE_VR_WIDTH-1:0]),
3538       .sel0 (tlu_pstate_din_sel0[0]),                 
3539           .sel1 (tlu_pstate_wsr_sel0),
3540           .sel2 (tlu_pstate_nt_sel0),
3541       .dout (restore_pstate0[`WSR_PSTATE_VR_WIDTH-1:0])
3542);
3543
3544`ifdef FPGA_SYN_CLK_DFF
3545dffe_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate0_w3 (
3546    .din ({restore_pstate0[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
3547           restore_pstate0[`WSR_PSTATE_VRANGE1_LO]}), 
3548    .q   ({restore_pstate0_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
3549           restore_pstate0_w3[`WSR_PSTATE_VRANGE1_LO]}),
3550    .en (~(tlu_update_pstate_l_w2[0])), .clk(clk),
3551    .se  (se),       
3552    .si  (),         
3553    .so  ()
3554);
3555`else
3556dff_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate0_w3 (
3557    .din ({restore_pstate0[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
3558           restore_pstate0[`WSR_PSTATE_VRANGE1_LO]}), 
3559    .q   ({restore_pstate0_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
3560           restore_pstate0_w3[`WSR_PSTATE_VRANGE1_LO]}),
3561    .clk (pstate0_clk),
3562    .se  (se),       
3563    .si  (),         
3564    .so  ()
3565);
3566`endif
3567//
3568dffe_s dffe_pstate0_priv (
3569    .din (restore_pstate0[`WSR_PSTATE_VR_PRIV]),
3570    .q   (restore_pstate0_w3[`WSR_PSTATE_VR_PRIV]),
3571    .en  (pstate_priv_update_w2[0]),
3572    .clk (clk),
3573    .se  (se),       
3574    .si  (),         
3575    .so  ()
3576);
3577//
3578// true_pstate0 assignments
3579assign true_pstate0[`PSTATE_TRUE_WIDTH-1:0] = 
3580           {2'b0, // tlu_select_int_global - replaced by gl register
3581                  // tlu_select_mmu_global - replaced by gl register
3582            restore_pstate0_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE2_LO],
3583            2'b0, // fixed mmodel - TSO
3584            1'b0, // redmode - replaced by hpstate.red
3585            restore_pstate0_w3[`WSR_PSTATE_VRANGE1_HI:`WSR_PSTATE_VRANGE1_LO],
3586            1'b0}; // tlu_select_alt_global - replaced by gl register
3587//
3588// modified for timing
3589/*
3590mux3ds #(9) mux_restore_pstate0(
3591       .in0  (dnrtry_pstate[`PSTATE_TRUE_WIDTH-3:1]),   
3592           .in1  (wsr_data_pstate_g[`PSTATE_TRUE_WIDTH-3:1]),
3593           .in2  (ntrap_pstate0[`PSTATE_TRUE_WIDTH-3:1]),
3594       .sel0 (tlu_pstate_din_sel0[0]),                 
3595       // modified for bug 2584
3596           // .sel1 (tlu_pstate_din_sel0[1]),
3597           .sel1 (tlu_pstate_wsr_sel0),
3598           .sel2 (tlu_pstate_nt_sel0),
3599       .dout (restore_pstate0[`PSTATE_TRUE_WIDTH-3:1])
3600);
3601
3602dff_s #(`PSTATE_TRUE_WIDTH) pstate0_1 (
3603    .din (restore_pstate0[`PSTATE_TRUE_WIDTH-1:0]),
3604        .q   (true_pstate0[`PSTATE_TRUE_WIDTH-1:0]),
3605    .clk (pstate0_clk),
3606    .se  (se),       
3607    .si  (),         
3608    .so  ()
3609 );
3610//
3611dff_s #(`PSTATE_TRUE_WIDTH-1) dff_true_pstate0 (
3612    .din ({restore_pstate0[`PSTATE_TRUE_WIDTH-1:3],
3613           restore_pstate0[1:0]}),
3614    .q   ({true_pstate0[`PSTATE_TRUE_WIDTH-1:3],
3615           true_pstate0[1:0]}),
3616    .clk (pstate0_clk),
3617    .se  (se),       
3618    .si  (),         
3619    .so  ()
3620);
3621//
3622dffe_s dffe_pstate0_priv (
3623    .din (restore_pstate0[`PSTATE_PRIV]),
3624    .q   (true_pstate0[`PSTATE_PRIV]),
3625    .en  (pstate_priv_update_g[0]),
3626    .clk (clk),
3627    .se  (se),       
3628    .si  (),         
3629    .so  ()
3630);
3631// modified for hypervisor support
3632assign restore_pstate0[11:10] = 2'b0;
3633assign restore_pstate0[0]     = 1'b0;
3634//
3635// modified to reflect the physical implementation
3636// assign hpstate_dnrtry_priv_w2[0] =
3637           (true_hpstate0[`HPSTATE_ENB])?
3638            tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV] :
3639            dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV];
3640*/
3641mux2ds mx_hpstate_dnrtry_priv_w2_0 (
3642       .in0  (tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV]),
3643           .in1  (dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV]),
3644       .sel0 (true_hpstate0[`HPSTATE_ENB]),     
3645           .sel1 (~true_hpstate0[`HPSTATE_ENB]),
3646       .dout (hpstate_dnrtry_priv_w2[0])
3647); 
3648//
3649assign dnrtry_hpstate0_w2[`TLU_HPSTATE_WIDTH-1:0] = 
3650       {tsa_dnrtry_hpstate_w2[`TSA_HTSTATE_WIDTH-1],
3651        true_hpstate0[`HPSTATE_ENB], 
3652        tsa_dnrtry_hpstate_w2[`HPSTATE_RED],
3653        hpstate_dnrtry_priv_w2[0],
3654        tsa_dnrtry_hpstate_w2[`HPSTATE_TLZ]};
3655
3656// added for bug 3747
3657assign hpstate_priv_set = ~(tlu_select_tba_w2) | tlu_select_redmode; 
3658//
3659// constructing the hpstate for hyper-privileged traps
3660//
3661assign hntrap_hpstate0_w2[`TLU_HPSTATE_WIDTH-1:0] = 
3662       {hpstate_ibe_set[0], 
3663        hpstate_enb_set[0], 
3664        hpstate_redmode, // Redmode bit
3665        // modified for bug 3747
3666        hpstate_priv_set, // hyper-privileged bit
3667        hpstate_tlz_set[0]}; // TLZ interrupt bit
3668
3669assign tlu_hpstate_hnt_sel0 = 
3670       ~(tlu_hpstate_din_sel0[0] | tlu_hpstate_wsr_sel0);
3671//
3672assign tlu_hpstate_wsr_sel0 = 
3673           tlu_hpstate_din_sel0[1] | 
3674           (~true_hpstate0[`HPSTATE_ENB] & tlu_pstate_din_sel0[1]);
3675
3676mux3ds #(`TLU_HPSTATE_WIDTH) mux_restore_hpstate0(
3677       .in0  (dnrtry_hpstate0_w2[`TLU_HPSTATE_WIDTH-1:0]),     
3678           .in1  (wsr_data_hpstate_w2[`TLU_HPSTATE_WIDTH-1:0]),
3679           .in2  (hntrap_hpstate0_w2[`TLU_HPSTATE_WIDTH-1:0]),
3680       .sel0 (tlu_hpstate_din_sel0[0]),                 
3681       .sel1 (tlu_hpstate_wsr_sel0),
3682           .sel2 (tlu_hpstate_hnt_sel0),
3683       .dout (restore_hpstate0[`TLU_HPSTATE_WIDTH-1:0])
3684);
3685//
3686// need to initialize hpstate.enb = 0
3687// need to initialize hpstate.ibe = 0
3688// modified due to the addition of hpstate.ibe
3689`ifdef FPGA_SYN_CLK_DFF
3690dffre_s #(2) dffr_true_hpst0_enb_ibe (
3691    .din (restore_hpstate0[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3692        .q   (true_hpstate0[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3693    .rst (local_rst),
3694    .en (~(tlu_update_hpstate_l_w2[0])), .clk(clk),
3695    .se  (se),       
3696    .si  (),         
3697    .so  ()
3698 );
3699`else
3700dffr_s #(2) dffr_true_hpst0_enb_ibe (
3701    .din (restore_hpstate0[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3702        .q   (true_hpstate0[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3703    .rst (local_rst),
3704    .clk (hpstate0_clk),
3705    .se  (se),       
3706    .si  (),         
3707    .so  ()
3708 );
3709`endif
3710//
3711`ifdef FPGA_SYN_CLK_DFF
3712dffe_s #(2) dff_true_hpstate0 (
3713    .din ({restore_hpstate0[`HPSTATE_RED], 
3714           restore_hpstate0[`HPSTATE_TLZ]}),
3715    .q   ({true_hpstate0[`HPSTATE_RED], 
3716           true_hpstate0[`HPSTATE_TLZ]}),
3717    .en (~(tlu_update_hpstate_l_w2[0])), .clk(clk),
3718    .se  (se),       
3719    .si  (),         
3720    .so  ()
3721);
3722`else
3723dff_s #(2) dff_true_hpstate0 (
3724    .din ({restore_hpstate0[`HPSTATE_RED], 
3725           restore_hpstate0[`HPSTATE_TLZ]}),
3726    .q   ({true_hpstate0[`HPSTATE_RED], 
3727           true_hpstate0[`HPSTATE_TLZ]}),
3728    .clk (hpstate0_clk),
3729    .se  (se),       
3730    .si  (),         
3731    .so  ()
3732);
3733`endif
3734//
3735dffe_s dffe_hpstate0_priv (
3736    .din (restore_hpstate0[`HPSTATE_PRIV]), 
3737    .q   (true_hpstate0[`HPSTATE_PRIV]), 
3738    .en  (hpstate_priv_update_w2[0]),
3739    .clk (clk),
3740    .se  (se),       
3741    .si  (),         
3742    .so  ()
3743);
3744
3745assign tlu_ifu_pstate_pef[0]   = true_pstate0[`PSTATE_PEF];
3746assign tlu_lsu_pstate_cle[0]   = true_pstate0[`PSTATE_CLE];
3747assign tlu_lsu_pstate_priv[0]  = true_pstate0[`PSTATE_PRIV];
3748assign tlu_int_pstate_ie[0]    = true_pstate0[`PSTATE_IE];
3749assign local_pstate_ie[0]      = true_pstate0[`PSTATE_IE];
3750// assign tlu_pstate_cle[0]        = true_pstate0[`PSTATE_CLE];
3751assign tlu_pstate_tle[0]           = true_pstate0[`PSTATE_TLE];
3752// assign tlu_pstate_priv[0]       = true_pstate0[`PSTATE_PRIV];
3753assign local_pstate_priv[0]    = true_pstate0[`PSTATE_PRIV];
3754assign tlu_pstate_am[0]            = true_pstate0[`PSTATE_AM];
3755assign tlu_int_redmode[0] = true_hpstate0[`HPSTATE_RED];
3756assign tlu_lsu_redmode[0] = true_hpstate0[`HPSTATE_RED];
3757//
3758// hypervisor privilege indicator
3759assign tlu_hpstate_priv[0]   = true_hpstate0[`HPSTATE_PRIV];
3760assign local_hpstate_priv[0] = true_hpstate0[`HPSTATE_PRIV];
3761assign tcl_hpstate_priv[0]   = true_hpstate0[`HPSTATE_PRIV];
3762//
3763// hypervisor lite mode selector
3764assign tlu_hpstate_enb[0]   = true_hpstate0[`HPSTATE_ENB];
3765assign local_hpstate_enb[0] = true_hpstate0[`HPSTATE_ENB];
3766assign tcl_hpstate_enb[0]   = true_hpstate0[`HPSTATE_ENB];
3767
3768// hypervisor tlz indicator
3769assign tlu_hpstate_tlz[0] = true_hpstate0[`HPSTATE_TLZ];
3770
3771// hypervisor instruction breakpt enable
3772assign tlu_hpstate_ibe[0] = true_hpstate0[`HPSTATE_IBE];
3773
3774`ifdef FPGA_SYN_1THREAD
3775   assign tlu_ifu_pstate_pef[3:1] = 3'b000;
3776   assign tlu_lsu_pstate_cle[3:1] = 3'b000;
3777   assign tlu_lsu_pstate_priv[3:1] = 3'b000;
3778   assign tlu_int_pstate_ie[3:1] = 3'b000;
3779   assign local_pstate_ie[3:1] = 3'b000;
3780   assign tlu_pstate_tle[3:1] = 3'b000;
3781   assign local_pstate_priv[3:1] = 3'b000;
3782   assign tlu_pstate_am[3:1] = 3'b000;
3783   assign tlu_int_redmode[3:1] = 3'b000;
3784   assign tlu_lsu_redmode[3:1] = 3'b000;
3785   assign tlu_hpstate_priv[3:1] = 3'b000;
3786   assign local_hpstate_priv[3:1] = 3'b000;
3787   assign tcl_hpstate_priv[3:1] = 3'b000;
3788   assign tlu_hpstate_enb[3:1] = 3'b000;
3789   assign local_hpstate_enb[3:1] = 3'b000;
3790   assign tcl_hpstate_enb[3:1] = 3'b000;
3791   assign tlu_hpstate_tlz[3:1] = 3'b000;
3792   assign tlu_hpstate_ibe[3:1] = 3'b000;
3793   
3794`else
3795   
3796// THREAD 1
3797assign tlu_pstate_nt_sel1 = 
3798          ~(tlu_pstate_din_sel1[0] | tlu_pstate_wsr_sel1);
3799//
3800// modified for bug 3349
3801assign tlu_pstate_wsr_sel1 = 
3802              tlu_pstate_din_sel1[1] | 
3803           (~(true_hpstate1[`HPSTATE_ENB] & wsr_data_w2[`WSR_HPSTATE_ENB]) &
3804              tlu_hpstate_din_sel1[1]);
3805//            (~true_hpstate1[`HPSTATE_ENB] & tlu_hpstate_din_sel1[1]);
3806
3807mux3ds #(`WSR_PSTATE_VR_WIDTH) mux_restore_pstate1(
3808       .in0  (dnrtry_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),     
3809           .in1  (wsr_data_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),
3810           .in2  (ntrap_pstate1[`WSR_PSTATE_VR_WIDTH-1:0]),
3811       .sel0 (tlu_pstate_din_sel1[0]),                 
3812           .sel1 (tlu_pstate_wsr_sel1),
3813           .sel2 (tlu_pstate_nt_sel1),
3814       .dout (restore_pstate1[`WSR_PSTATE_VR_WIDTH-1:0])
3815);
3816
3817`ifdef FPGA_SYN_CLK_DFF
3818dffe_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate1_w3 (
3819    .din ({restore_pstate1[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
3820           restore_pstate1[`WSR_PSTATE_VRANGE1_LO]}), 
3821    .q   ({restore_pstate1_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
3822           restore_pstate1_w3[`WSR_PSTATE_VRANGE1_LO]}),
3823    .en (~(tlu_update_pstate_l_w2[1])), .clk(clk),
3824    .se  (se),       
3825    .si  (),         
3826    .so  ()
3827);
3828`else
3829dff_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate1_w3 (
3830    .din ({restore_pstate1[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
3831           restore_pstate1[`WSR_PSTATE_VRANGE1_LO]}), 
3832    .q   ({restore_pstate1_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
3833           restore_pstate1_w3[`WSR_PSTATE_VRANGE1_LO]}),
3834    .clk (pstate1_clk),
3835    .se  (se),       
3836    .si  (),         
3837    .so  ()
3838);
3839`endif
3840//
3841dffe_s dffe_pstate1_priv (
3842    .din (restore_pstate1[`WSR_PSTATE_VR_PRIV]),
3843    .q   (restore_pstate1_w3[`WSR_PSTATE_VR_PRIV]),
3844    .en  (pstate_priv_update_w2[1]),
3845    .clk (clk),
3846    .se  (se),       
3847    .si  (),         
3848    .so  ()
3849);
3850//
3851// modified to reflect the physical implementation
3852/*
3853assign hpstate_dnrtry_priv_w2[1] =
3854           (true_hpstate1[`HPSTATE_ENB])?
3855            tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV] :
3856            dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV];
3857*/
3858mux2ds mx_hpstate_dnrtry_priv_w2_1 (
3859       .in0  (tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV]),
3860           .in1  (dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV]),
3861       .sel0 (true_hpstate1[`HPSTATE_ENB]),     
3862           .sel1 (~true_hpstate1[`HPSTATE_ENB]),
3863       .dout (hpstate_dnrtry_priv_w2[1])
3864); 
3865//
3866assign dnrtry_hpstate1_w2[`TLU_HPSTATE_WIDTH-1:0] = 
3867       {tsa_dnrtry_hpstate_w2[`TSA_HTSTATE_WIDTH-1],
3868        true_hpstate1[`HPSTATE_ENB], 
3869        tsa_dnrtry_hpstate_w2[`HPSTATE_RED],
3870        hpstate_dnrtry_priv_w2[1],
3871        tsa_dnrtry_hpstate_w2[`HPSTATE_TLZ]};
3872//
3873// true_pstate1 assignments
3874assign true_pstate1[`PSTATE_TRUE_WIDTH-1:0] = 
3875           {2'b0, // tlu_select_int_global - replaced by gl register
3876                  // tlu_select_mmu_global - replaced by gl register
3877            restore_pstate1_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE2_LO],
3878            2'b0, // fixed mmodel - TSO
3879            1'b0, // redmode - replaced by hpstate.red
3880            restore_pstate1_w3[`WSR_PSTATE_VRANGE1_HI:`WSR_PSTATE_VRANGE1_LO],
3881            1'b0}; // tlu_select_alt_global - replaced by gl register
3882//
3883// modified for timing
3884/*
3885mux3ds #(9) mux_restore_pstate1(
3886       .in0  (dnrtry_pstate[`PSTATE_TRUE_WIDTH-3:1]),
3887           .in1  (wsr_data_pstate_g[`PSTATE_TRUE_WIDTH-3:1]),
3888           .in2  (ntrap_pstate1[`PSTATE_TRUE_WIDTH-3:1]),
3889       .sel0 (tlu_pstate_din_sel1[0]),                 
3890       // modified for bug 2584
3891           // .sel1 (tlu_pstate_din_sel1[1]),
3892           .sel1 (tlu_pstate_wsr_sel1),
3893           .sel2 (tlu_pstate_nt_sel1),
3894       .dout (restore_pstate1[`PSTATE_TRUE_WIDTH-3:1])
3895);
3896
3897`ifdef FPGA_SYN_CLK_DFF
3898dffe_s #(`PSTATE_TRUE_WIDTH) pstate1_1 (
3899    .din (restore_pstate1[`PSTATE_TRUE_WIDTH-1:0]),
3900        .q   (true_pstate1[`PSTATE_TRUE_WIDTH-1:0]),
3901    .en (~(tlu_update_pstate_l_w2[1])), .clk(clk),
3902    .se  (se),       
3903    .si  (),         
3904    .so  ()
3905    );
3906`else
3907dff_s #(`PSTATE_TRUE_WIDTH) pstate1_1 (
3908    .din (restore_pstate1[`PSTATE_TRUE_WIDTH-1:0]),
3909        .q   (true_pstate1[`PSTATE_TRUE_WIDTH-1:0]),
3910    .clk (pstate1_clk),
3911    .se  (se),       
3912    .si  (),         
3913    .so  ()
3914    );
3915`endif
3916//
3917`ifdef FPGA_SYN_CLK_DFF
3918dffe_s #(`PSTATE_TRUE_WIDTH-1) dff_true_pstate1 (
3919    .din ({restore_pstate1[`PSTATE_TRUE_WIDTH-1:3],
3920           restore_pstate1[1:0]}),
3921    .q   ({true_pstate1[`PSTATE_TRUE_WIDTH-1:3],
3922           true_pstate1[1:0]}),
3923    .en (~(tlu_update_pstate_l_w2[1])), .clk(clk),
3924    .se  (se),       
3925    .si  (),         
3926    .so  ()
3927);
3928`else
3929dff_s #(`PSTATE_TRUE_WIDTH-1) dff_true_pstate1 (
3930    .din ({restore_pstate1[`PSTATE_TRUE_WIDTH-1:3],
3931           restore_pstate1[1:0]}),
3932    .q   ({true_pstate1[`PSTATE_TRUE_WIDTH-1:3],
3933           true_pstate1[1:0]}),
3934    .clk (pstate1_clk),
3935    .se  (se),       
3936    .si  (),         
3937    .so  ()
3938);
3939`endif
3940//
3941dffe_s dffe_pstate1_priv (
3942    .din (restore_pstate1[`PSTATE_PRIV]),
3943    .q   (true_pstate1[`PSTATE_PRIV]),
3944    .en  (pstate_priv_update_g[1]),
3945    .clk (clk),
3946    .se  (se),       
3947    .si  (),         
3948    .so  ()
3949);
3950//
3951// modified for hypervisor support
3952assign restore_pstate1[11:10] = 2'b0;
3953assign restore_pstate1[0]     = 1'b0;
3954*/
3955//
3956// constructing the hpstate for hyper-privileged traps
3957//
3958assign hntrap_hpstate1_w2[`TLU_HPSTATE_WIDTH-1:0] = 
3959       {hpstate_ibe_set[1], 
3960        hpstate_enb_set[1], 
3961        hpstate_redmode,  // Redmode bit
3962        hpstate_priv_set, // hyper-privileged bit
3963        hpstate_tlz_set[1]}; // TLZ interrupt bit
3964//
3965assign tlu_hpstate_hnt_sel1 = 
3966       ~(tlu_hpstate_din_sel1[0] | tlu_hpstate_wsr_sel1);
3967//
3968assign tlu_hpstate_wsr_sel1 = 
3969           tlu_hpstate_din_sel1[1] | 
3970           (~true_hpstate1[`HPSTATE_ENB] & tlu_pstate_din_sel1[1]);
3971
3972mux3ds #(`TLU_HPSTATE_WIDTH) mux_restore_hpstate1 (
3973       .in0  (dnrtry_hpstate1_w2[`TLU_HPSTATE_WIDTH-1:0]),     
3974           .in1  (wsr_data_hpstate_w2[`TLU_HPSTATE_WIDTH-1:0]),
3975           .in2  (hntrap_hpstate1_w2[`TLU_HPSTATE_WIDTH-1:0]),
3976       .sel0 (tlu_hpstate_din_sel1[0]),                 
3977       .sel1 (tlu_hpstate_wsr_sel1),
3978           .sel2 (tlu_hpstate_hnt_sel1),
3979       .dout (restore_hpstate1[`TLU_HPSTATE_WIDTH-1:0])
3980);
3981
3982// need to initialize hpstate.enb = 0
3983// need to initialize hpstate.ibe = 0
3984// modified due to the addition of hpstate.ibe
3985`ifdef FPGA_SYN_CLK_DFF
3986dffre_s #(2) dffr_true_hpst1_enb_ibe (
3987    .din (restore_hpstate1[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3988        .q   (true_hpstate1[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3989    .rst (local_rst),
3990    .en (~(tlu_update_hpstate_l_w2[1])), .clk(clk),
3991    .se  (se),       
3992    .si  (),         
3993    .so  ()
3994);
3995`else
3996dffr_s #(2) dffr_true_hpst1_enb_ibe (
3997    .din (restore_hpstate1[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3998        .q   (true_hpstate1[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
3999    .rst (local_rst),
4000    .clk (hpstate1_clk),
4001    .se  (se),       
4002    .si  (),         
4003    .so  ()
4004);
4005`endif
4006//
4007`ifdef FPGA_SYN_CLK_DFF
4008dffe_s #(2) dff_true_hpstate1 (
4009    .din ({restore_hpstate1[`HPSTATE_RED], 
4010           restore_hpstate1[`HPSTATE_TLZ]}),
4011    .q   ({true_hpstate1[`HPSTATE_RED], 
4012           true_hpstate1[`HPSTATE_TLZ]}),
4013    .en (~(tlu_update_hpstate_l_w2[1])), .clk(clk),
4014    .se  (se),       
4015    .si  (),         
4016    .so  ()
4017);
4018`else
4019dff_s #(2) dff_true_hpstate1 (
4020    .din ({restore_hpstate1[`HPSTATE_RED], 
4021           restore_hpstate1[`HPSTATE_TLZ]}),
4022    .q   ({true_hpstate1[`HPSTATE_RED], 
4023           true_hpstate1[`HPSTATE_TLZ]}),
4024    .clk (hpstate1_clk),
4025    .se  (se),       
4026    .si  (),         
4027    .so  ()
4028);
4029`endif
4030//
4031dffe_s dffe_hpstate1_priv (
4032    .din (restore_hpstate1[`HPSTATE_PRIV]), 
4033    .q   (true_hpstate1[`HPSTATE_PRIV]), 
4034    .en  (hpstate_priv_update_w2[1]),
4035    .clk (clk),
4036    .se  (se),       
4037    .si  (),         
4038    .so  ()
4039);
4040
4041assign tlu_ifu_pstate_pef[1]   = true_pstate1[`PSTATE_PEF];
4042assign tlu_lsu_pstate_cle[1]   = true_pstate1[`PSTATE_CLE];
4043assign tlu_lsu_pstate_priv[1]  = true_pstate1[`PSTATE_PRIV];
4044assign tlu_int_pstate_ie[1]    = true_pstate1[`PSTATE_IE];
4045assign local_pstate_ie[1]      = true_pstate1[`PSTATE_IE];
4046// assign tlu_pstate_cle[1]        = true_pstate1[`PSTATE_CLE];
4047assign tlu_pstate_tle[1]           = true_pstate1[`PSTATE_TLE];
4048// assign tlu_pstate_priv[1]       = true_pstate1[`PSTATE_PRIV];
4049assign local_pstate_priv[1]    = true_pstate1[`PSTATE_PRIV];
4050assign tlu_pstate_am[1]            = true_pstate1[`PSTATE_AM];
4051// assign tlu_pstate1_mmodel[1:0] = true_pstate1[`PSTATE_MM_HI:`PSTATE_MM_LO];
4052//
4053assign tlu_int_redmode[1] = true_hpstate1[`HPSTATE_RED];
4054assign tlu_lsu_redmode[1] = true_hpstate1[`HPSTATE_RED];
4055//
4056// hypervisor privilege indicator
4057assign tlu_hpstate_priv[1]   = true_hpstate1[`HPSTATE_PRIV];
4058assign local_hpstate_priv[1] = true_hpstate1[`HPSTATE_PRIV];
4059assign tcl_hpstate_priv[1]   = true_hpstate1[`HPSTATE_PRIV];
4060//
4061// hypervisor lite mode selector
4062assign tlu_hpstate_enb[1]   = true_hpstate1[`HPSTATE_ENB];
4063assign local_hpstate_enb[1] = true_hpstate1[`HPSTATE_ENB];
4064assign tcl_hpstate_enb[1]   = true_hpstate1[`HPSTATE_ENB];
4065
4066// hypervisor tlz indicator
4067assign tlu_hpstate_tlz[1] = true_hpstate1[`HPSTATE_TLZ];
4068
4069// hypervisor instruction breakpt enable
4070assign tlu_hpstate_ibe[1] = true_hpstate1[`HPSTATE_IBE];
4071
4072// THREAD2
4073// added for bug 1575
4074// modified for bug 2584
4075// assign tlu_pstate_nt_sel2 = ~|(tlu_pstate_din_sel2[1:0]);
4076assign tlu_pstate_nt_sel2 = 
4077          ~(tlu_pstate_din_sel2[0] | tlu_pstate_wsr_sel2);
4078//
4079// modified for bug 3349
4080assign tlu_pstate_wsr_sel2 = 
4081           tlu_pstate_din_sel2[1] | 
4082           (~(true_hpstate2[`HPSTATE_ENB] & wsr_data_w2[`WSR_HPSTATE_ENB]) &
4083              tlu_hpstate_din_sel2[1]);
4084//            (~true_hpstate2[`HPSTATE_ENB] & tlu_hpstate_din_sel2[1]);
4085
4086mux3ds #(`WSR_PSTATE_VR_WIDTH) mux_restore_pstate2(
4087       .in0  (dnrtry_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),     
4088           .in1  (wsr_data_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),
4089           .in2  (ntrap_pstate2[`WSR_PSTATE_VR_WIDTH-1:0]),
4090       .sel0 (tlu_pstate_din_sel2[0]),                 
4091           .sel1 (tlu_pstate_wsr_sel2),
4092           .sel2 (tlu_pstate_nt_sel2),
4093       .dout (restore_pstate2[`WSR_PSTATE_VR_WIDTH-1:0])
4094);
4095
4096`ifdef FPGA_SYN_CLK_DFF
4097dffe_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate2_w3 (
4098    .din ({restore_pstate2[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
4099           restore_pstate2[`WSR_PSTATE_VRANGE1_LO]}), 
4100    .q   ({restore_pstate2_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
4101           restore_pstate2_w3[`WSR_PSTATE_VRANGE1_LO]}),
4102    .en (~(tlu_update_pstate_l_w2[2])), .clk(clk),
4103    .se  (se),       
4104    .si  (),         
4105    .so  ()
4106);
4107`else
4108dff_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate2_w3 (
4109    .din ({restore_pstate2[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
4110           restore_pstate2[`WSR_PSTATE_VRANGE1_LO]}), 
4111    .q   ({restore_pstate2_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
4112           restore_pstate2_w3[`WSR_PSTATE_VRANGE1_LO]}),
4113    .clk (pstate2_clk),
4114    .se  (se),       
4115    .si  (),         
4116    .so  ()
4117);
4118`endif
4119//
4120dffe_s dffe_pstate2_priv (
4121    .din (restore_pstate2[`WSR_PSTATE_VR_PRIV]),
4122    .q   (restore_pstate2_w3[`WSR_PSTATE_VR_PRIV]),
4123    .en  (pstate_priv_update_w2[2]),
4124    .clk (clk),
4125    .se  (se),       
4126    .si  (),         
4127    .so  ()
4128);
4129//
4130// true_pstate2 assignments
4131assign true_pstate2[`PSTATE_TRUE_WIDTH-1:0] = 
4132           {2'b0, // tlu_select_int_global - replaced by gl register
4133                  // tlu_select_mmu_global - replaced by gl register
4134            restore_pstate2_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE2_LO],
4135            2'b0, // fixed mmodel - TSO
4136            1'b0, // redmode - replaced by hpstate.red
4137            restore_pstate2_w3[`WSR_PSTATE_VRANGE1_HI:`WSR_PSTATE_VRANGE1_LO],
4138            1'b0}; // tlu_select_alt_global - replaced by gl register
4139//
4140// modified for timing
4141/*
4142mux3ds #(9) mux_restore_pstate2(
4143       .in0  (dnrtry_pstate[`PSTATE_TRUE_WIDTH-3:1]),   
4144           .in1  (wsr_data_pstate_g[`PSTATE_TRUE_WIDTH-3:1]),
4145           .in2  (ntrap_pstate2[`PSTATE_TRUE_WIDTH-3:1]),
4146       .sel0 (tlu_pstate_din_sel2[0]),                 
4147       // modified for bug 2584
4148           // .sel1 (tlu_pstate_din_sel2[1]),
4149           .sel1 (tlu_pstate_wsr_sel2),
4150           .sel2 (tlu_pstate_nt_sel2),
4151       .dout (restore_pstate2[`PSTATE_TRUE_WIDTH-3:1])
4152);
4153
4154`ifdef FPGA_SYN_CLK_DFF
4155dffe_s #(`PSTATE_TRUE_WIDTH) pstate2_1 (
4156    .din (restore_pstate2[`PSTATE_TRUE_WIDTH-1:0]),
4157        .q   (true_pstate2[`PSTATE_TRUE_WIDTH-1:0]),
4158    .en (~(tlu_update_pstate_l_w2[2])), .clk(clk),
4159    .se  (se),       
4160    .si  (),         
4161    .so  ()
4162);
4163`else
4164dff_s #(`PSTATE_TRUE_WIDTH) pstate2_1 (
4165    .din (restore_pstate2[`PSTATE_TRUE_WIDTH-1:0]),
4166        .q   (true_pstate2[`PSTATE_TRUE_WIDTH-1:0]),
4167    .clk (pstate2_clk),
4168    .se  (se),       
4169    .si  (),         
4170    .so  ()
4171);
4172`endif
4173//
4174`ifdef FPGA_SYN_CLK_DFF
4175dffe_s #(`PSTATE_TRUE_WIDTH-1) dff_true_pstate2 (
4176    .din ({restore_pstate2[`PSTATE_TRUE_WIDTH-1:3],
4177           restore_pstate2[1:0]}),
4178    .q   ({true_pstate2[`PSTATE_TRUE_WIDTH-1:3],
4179           true_pstate2[1:0]}),
4180    .en (~(tlu_update_pstate_l_w2[2])), .clk(clk),
4181    .se  (se),       
4182    .si  (),         
4183    .so  ()
4184);
4185`else
4186dff_s #(`PSTATE_TRUE_WIDTH-1) dff_true_pstate2 (
4187    .din ({restore_pstate2[`PSTATE_TRUE_WIDTH-1:3],
4188           restore_pstate2[1:0]}),
4189    .q   ({true_pstate2[`PSTATE_TRUE_WIDTH-1:3],
4190           true_pstate2[1:0]}),
4191    .clk (pstate2_clk),
4192    .se  (se),       
4193    .si  (),         
4194    .so  ()
4195);
4196`endif
4197//
4198dffe_s dffe_pstate2_priv (
4199    .din (restore_pstate2[`PSTATE_PRIV]),
4200    .q   (true_pstate2[`PSTATE_PRIV]),
4201    .en  (pstate_priv_update_g[2]),
4202    .clk (clk),
4203    .se  (se),       
4204    .si  (),         
4205    .so  ()
4206);
4207//
4208// modified for hypervisor support
4209assign restore_pstate2[11:10] = 2'b0;
4210assign restore_pstate2[0]     = 1'b0;
4211// modified to reflect the physical implementation
4212// restructing the hpstate for done/retry instructions
4213//
4214assign hpstate_dnrtry_priv_w2[2] =
4215           (true_hpstate2[`HPSTATE_ENB])?
4216            tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV] :
4217            dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV];
4218*/
4219mux2ds mx_hpstate_dnrtry_priv_w2_2 (
4220       .in0  (tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV]),
4221           .in1  (dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV]),
4222       .sel0 (true_hpstate2[`HPSTATE_ENB]),     
4223           .sel1 (~true_hpstate2[`HPSTATE_ENB]),
4224       .dout (hpstate_dnrtry_priv_w2[2])
4225); 
4226//
4227assign dnrtry_hpstate2_w2[`TLU_HPSTATE_WIDTH-1:0] = 
4228       {tsa_dnrtry_hpstate_w2[`TSA_HTSTATE_WIDTH-1],
4229        true_hpstate2[`HPSTATE_ENB], 
4230        tsa_dnrtry_hpstate_w2[`HPSTATE_RED],
4231        hpstate_dnrtry_priv_w2[2],
4232        tsa_dnrtry_hpstate_w2[`HPSTATE_TLZ]};
4233//
4234// constructing the hpstate for hyper-privileged traps
4235//
4236assign hntrap_hpstate2_w2[`TLU_HPSTATE_WIDTH-1:0] = 
4237       {hpstate_ibe_set[2], 
4238        hpstate_enb_set[2], 
4239        hpstate_redmode,  // Redmode bit
4240        hpstate_priv_set, // hyper-privileged bit
4241        hpstate_tlz_set[2]}; // TLZ interrupt bit
4242//
4243assign tlu_hpstate_hnt_sel2 = 
4244       ~(tlu_hpstate_din_sel2[0] | tlu_hpstate_wsr_sel2);
4245//
4246assign tlu_hpstate_wsr_sel2 = 
4247           tlu_hpstate_din_sel2[1] | 
4248           (~true_hpstate2[`HPSTATE_ENB] & tlu_pstate_din_sel2[1]);
4249
4250mux3ds #(`TLU_HPSTATE_WIDTH) mux_restore_hpstate2 (
4251       .in0  (dnrtry_hpstate2_w2[`TLU_HPSTATE_WIDTH-1:0]),     
4252           .in1  (wsr_data_hpstate_w2[`TLU_HPSTATE_WIDTH-1:0]),
4253           .in2  (hntrap_hpstate2_w2[`TLU_HPSTATE_WIDTH-1:0]),
4254       .sel0 (tlu_hpstate_din_sel2[0]),                 
4255           .sel1 (tlu_hpstate_wsr_sel2),
4256           .sel2 (tlu_hpstate_hnt_sel2),
4257       .dout (restore_hpstate2[`TLU_HPSTATE_WIDTH-1:0])
4258);
4259//
4260// need to initialize hpstate.enb = 0
4261// need to initialize hpstate.ibe = 0
4262// modified due to the addition of hpstate.ibe
4263`ifdef FPGA_SYN_CLK_DFF
4264dffre_s #(2) dffr_true_hpst2_enb_ibe (
4265    .din (restore_hpstate2[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4266        .q   (true_hpstate2[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4267    .rst (local_rst),
4268    .en (~(tlu_update_hpstate_l_w2[2])), .clk(clk),
4269    .se  (se),       
4270    .si  (),         
4271    .so  ()
4272);
4273`else
4274dffr_s #(2) dffr_true_hpst2_enb_ibe (
4275    .din (restore_hpstate2[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4276        .q   (true_hpstate2[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4277    .rst (local_rst),
4278    .clk (hpstate2_clk),
4279    .se  (se),       
4280    .si  (),         
4281    .so  ()
4282);
4283`endif
4284//
4285`ifdef FPGA_SYN_CLK_DFF
4286dffe_s #(2) dff_true_hpstate2 (
4287    .din ({restore_hpstate2[`HPSTATE_RED], 
4288           restore_hpstate2[`HPSTATE_TLZ]}),
4289    .q   ({true_hpstate2[`HPSTATE_RED], 
4290           true_hpstate2[`HPSTATE_TLZ]}),
4291    .en (~(tlu_update_hpstate_l_w2[2])), .clk(clk),
4292    .se  (se),       
4293    .si  (),         
4294    .so  ()
4295);
4296`else
4297dff_s #(2) dff_true_hpstate2 (
4298    .din ({restore_hpstate2[`HPSTATE_RED], 
4299           restore_hpstate2[`HPSTATE_TLZ]}),
4300    .q   ({true_hpstate2[`HPSTATE_RED], 
4301           true_hpstate2[`HPSTATE_TLZ]}),
4302    .clk (hpstate2_clk),
4303    .se  (se),       
4304    .si  (),         
4305    .so  ()
4306);
4307`endif
4308//
4309dffe_s dffe_hpstate2_priv (
4310    .din (restore_hpstate2[`HPSTATE_PRIV]), 
4311    .q   (true_hpstate2[`HPSTATE_PRIV]), 
4312    .en  (hpstate_priv_update_w2[2]),
4313    .clk (clk),
4314    .se  (se),       
4315    .si  (),         
4316    .so  ()
4317);
4318
4319assign tlu_ifu_pstate_pef[2]   = true_pstate2[`PSTATE_PEF];
4320assign tlu_lsu_pstate_cle[2]   = true_pstate2[`PSTATE_CLE];
4321assign tlu_lsu_pstate_priv[2]  = true_pstate2[`PSTATE_PRIV];
4322assign tlu_int_pstate_ie[2]    = true_pstate2[`PSTATE_IE];
4323assign local_pstate_ie[2]      = true_pstate2[`PSTATE_IE];
4324// assign tlu_pstate_cle[2]        = true_pstate2[`PSTATE_CLE];
4325assign tlu_pstate_tle[2]           = true_pstate2[`PSTATE_TLE];
4326// assign tlu_pstate_priv[2]       = true_pstate2[`PSTATE_PRIV];
4327assign local_pstate_priv[2]    = true_pstate2[`PSTATE_PRIV];
4328assign tlu_pstate_am[2]            = true_pstate2[`PSTATE_AM];
4329// assign tlu_pstate2_mmodel[1:0] = true_pstate2[`PSTATE_MM_HI:`PSTATE_MM_LO];
4330//
4331// modified for hypervisor support
4332// assign       tlu_int_redmode[2]      = true_pstate2[`PSTATE_RED];
4333assign tlu_int_redmode[2] = true_hpstate2[`HPSTATE_RED];
4334assign tlu_lsu_redmode[2] = true_hpstate2[`HPSTATE_RED];
4335//
4336// hypervisor privilege indicator
4337assign tlu_hpstate_priv[2]   = true_hpstate2[`HPSTATE_PRIV];
4338assign local_hpstate_priv[2] = true_hpstate2[`HPSTATE_PRIV];
4339assign tcl_hpstate_priv[2]   = true_hpstate2[`HPSTATE_PRIV];
4340//
4341// hypervisor lite mode selector
4342assign tlu_hpstate_enb[2]   = true_hpstate2[`HPSTATE_ENB];
4343assign local_hpstate_enb[2] = true_hpstate2[`HPSTATE_ENB];
4344assign tcl_hpstate_enb[2]   = true_hpstate2[`HPSTATE_ENB];
4345
4346// hypervisor tlz indicator
4347assign tlu_hpstate_tlz[2] = true_hpstate2[`HPSTATE_TLZ];
4348
4349// hypervisor instruction breakpt enable
4350assign tlu_hpstate_ibe[2] = true_hpstate2[`HPSTATE_IBE];
4351
4352// THREAD3
4353// added for bug 1575
4354// modified for bug 2584
4355// assign tlu_pstate_nt_sel3 = ~|(tlu_pstate_din_sel3[1:0]);
4356assign tlu_pstate_nt_sel3 = 
4357          ~(tlu_pstate_din_sel3[0] | tlu_pstate_wsr_sel3);
4358//
4359// modified for bug 3349
4360assign tlu_pstate_wsr_sel3 = 
4361           tlu_pstate_din_sel3[1] | 
4362           (~(true_hpstate3[`HPSTATE_ENB] & wsr_data_w2[`WSR_HPSTATE_ENB]) &
4363              tlu_hpstate_din_sel3[1]);
4364//            (~true_hpstate3[`HPSTATE_ENB] & tlu_hpstate_din_sel3[1]);
4365//
4366mux3ds #(`WSR_PSTATE_VR_WIDTH) mux_restore_pstate3(
4367       .in0  (dnrtry_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),     
4368           .in1  (wsr_data_pstate_w2[`WSR_PSTATE_VR_WIDTH-1:0]),
4369           .in2  (ntrap_pstate3[`WSR_PSTATE_VR_WIDTH-1:0]),
4370       .sel0 (tlu_pstate_din_sel3[0]),                 
4371           .sel1 (tlu_pstate_wsr_sel3),
4372           .sel2 (tlu_pstate_nt_sel3),
4373       .dout (restore_pstate3[`WSR_PSTATE_VR_WIDTH-1:0])
4374);
4375
4376`ifdef FPGA_SYN_CLK_DFF
4377dffe_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate3_w3 (
4378    .din ({restore_pstate3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
4379           restore_pstate3[`WSR_PSTATE_VRANGE1_LO]}), 
4380    .q   ({restore_pstate3_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
4381           restore_pstate3_w3[`WSR_PSTATE_VRANGE1_LO]}),
4382    .en (~(tlu_update_pstate_l_w2[3])), .clk(clk),
4383    .se  (se),       
4384    .si  (),         
4385    .so  ()
4386);
4387`else
4388dff_s #(`WSR_PSTATE_VR_WIDTH-1) dff_restore_pstate3_w3 (
4389    .din ({restore_pstate3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1], 
4390           restore_pstate3[`WSR_PSTATE_VRANGE1_LO]}), 
4391    .q   ({restore_pstate3_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE1_HI-1],
4392           restore_pstate3_w3[`WSR_PSTATE_VRANGE1_LO]}),
4393    .clk (pstate3_clk),
4394    .se  (se),       
4395    .si  (),         
4396    .so  ()
4397);
4398`endif
4399//
4400dffe_s dffe_pstate3_priv (
4401    .din (restore_pstate3[`WSR_PSTATE_VR_PRIV]),
4402    .q   (restore_pstate3_w3[`WSR_PSTATE_VR_PRIV]),
4403    .en  (pstate_priv_update_w2[3]),
4404    .clk (clk),
4405    .se  (se),       
4406    .si  (),         
4407    .so  ()
4408);
4409//
4410// true_pstate3 assignments
4411assign true_pstate3[`PSTATE_TRUE_WIDTH-1:0] = 
4412           {2'b0, // tlu_select_int_global - replaced by gl register
4413                  // tlu_select_mmu_global - replaced by gl register
4414            restore_pstate3_w3[`WSR_PSTATE_VRANGE2_HI:`WSR_PSTATE_VRANGE2_LO],
4415            2'b0, // fixed mmodel - TSO
4416            1'b0, // redmode - replaced by hpstate.red
4417            restore_pstate3_w3[`WSR_PSTATE_VRANGE1_HI:`WSR_PSTATE_VRANGE1_LO],
4418            1'b0}; // tlu_select_alt_global - replaced by gl register
4419//
4420// modified for timing
4421/*
4422mux3ds #(9) mux_restore_pstate3(
4423       .in0  (dnrtry_pstate[`PSTATE_TRUE_WIDTH-3:1]),   
4424           .in1  (wsr_data_pstate_g[`PSTATE_TRUE_WIDTH-3:1]),
4425           .in2  (ntrap_pstate3[`PSTATE_TRUE_WIDTH-3:1]),
4426       .sel0 (tlu_pstate_din_sel3[0]),                 
4427       // modified for bug 2584
4428           // .sel1 (tlu_pstate_din_sel3[1]),
4429           .sel1 (tlu_pstate_wsr_sel3),
4430           .sel2 (tlu_pstate_nt_sel3),
4431       .dout (restore_pstate3[`PSTATE_TRUE_WIDTH-3:1])
4432);
4433//
4434`ifdef FPGA_SYN_CLK_DFF
4435dffe_s #(`PSTATE_TRUE_WIDTH) pstate3_1 (
4436    .din (restore_pstate3[`PSTATE_TRUE_WIDTH-1:0]),
4437        .q   (true_pstate3[`PSTATE_TRUE_WIDTH-1:0]),
4438    .en (~(tlu_update_pstate_l_w2[3])), .clk(clk),
4439    .se  (se),       
4440    .si  (),         
4441    .so  ()
4442);
4443`else
4444dff_s #(`PSTATE_TRUE_WIDTH) pstate3_1 (
4445    .din (restore_pstate3[`PSTATE_TRUE_WIDTH-1:0]),
4446        .q   (true_pstate3[`PSTATE_TRUE_WIDTH-1:0]),
4447    .clk (pstate3_clk),
4448    .se  (se),       
4449    .si  (),         
4450    .so  ()
4451);
4452`endif
4453//
4454`ifdef FPGA_SYN_CLK_DFF
4455dffe_s #(`PSTATE_TRUE_WIDTH-1) pstate3_1 (
4456    .din ({restore_pstate3[`PSTATE_TRUE_WIDTH-1:3],
4457           restore_pstate3[1:0]}),
4458    .q   ({true_pstate3[`PSTATE_TRUE_WIDTH-1:3],
4459           true_pstate3[1:0]}),
4460    .en (~(tlu_update_pstate_l_w2[3])), .clk(clk),
4461    .se  (se),       
4462    .si  (),         
4463    .so  ()
4464);
4465`else
4466dff_s #(`PSTATE_TRUE_WIDTH-1) pstate3_1 (
4467    .din ({restore_pstate3[`PSTATE_TRUE_WIDTH-1:3],
4468           restore_pstate3[1:0]}),
4469    .q   ({true_pstate3[`PSTATE_TRUE_WIDTH-1:3],
4470           true_pstate3[1:0]}),
4471    .clk (pstate3_clk),
4472    .se  (se),       
4473    .si  (),         
4474    .so  ()
4475);
4476`endif
4477//
4478dffe_s dffe_pstate3_priv (
4479    .din (restore_pstate3[`PSTATE_PRIV]),
4480    .q   (true_pstate3[`PSTATE_PRIV]),
4481    .en  (pstate_priv_update_g[3]),
4482    .clk (clk),
4483    .se  (se),       
4484    .si  (),         
4485    .so  ()
4486);
4487//
4488// modified for hypervisor support
4489assign restore_pstate3[11:10] = 2'b0;
4490assign restore_pstate3[0]     = 1'b0;
4491//
4492// modified to reflect the physical implementation
4493assign hpstate_dnrtry_priv_w2[3] =
4494           (true_hpstate3[`HPSTATE_ENB])?
4495            tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV] :
4496            dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV];
4497*/
4498mux2ds mx_hpstate_dnrtry_priv_w2_3 (
4499       .in0  (tsa_dnrtry_hpstate_w2[`HPSTATE_PRIV]),
4500           .in1  (dnrtry_pstate_w2[`WSR_PSTATE_VR_PRIV]),
4501       .sel0 (true_hpstate3[`HPSTATE_ENB]),     
4502           .sel1 (~true_hpstate3[`HPSTATE_ENB]),
4503       .dout (hpstate_dnrtry_priv_w2[3])
4504); 
4505//
4506assign dnrtry_hpstate3_w2[`TLU_HPSTATE_WIDTH-1:0] = 
4507       {tsa_dnrtry_hpstate_w2[`TSA_HTSTATE_WIDTH-1],
4508        true_hpstate3[`HPSTATE_ENB], 
4509        tsa_dnrtry_hpstate_w2[`HPSTATE_RED],
4510        hpstate_dnrtry_priv_w2[3],
4511        tsa_dnrtry_hpstate_w2[`HPSTATE_TLZ]};
4512//
4513// constructing the hpstate for hyper-privileged traps
4514//
4515assign hntrap_hpstate3_w2[`TLU_HPSTATE_WIDTH-1:0] = 
4516       {hpstate_ibe_set[3], 
4517        hpstate_enb_set[3], 
4518        hpstate_redmode,  // Redmode bit
4519        hpstate_priv_set, // hyper-privileged bit
4520        hpstate_tlz_set[3]}; // TLZ interrupt bit
4521
4522assign tlu_hpstate_hnt_sel3 = 
4523       ~(tlu_hpstate_din_sel3[0] | tlu_hpstate_wsr_sel3);
4524//
4525assign tlu_hpstate_wsr_sel3 = 
4526           tlu_hpstate_din_sel3[1] | 
4527           (~true_hpstate3[`HPSTATE_ENB] & tlu_pstate_din_sel3[1]);
4528
4529mux3ds #(`TLU_HPSTATE_WIDTH) mux_restore_hpstate3 (
4530       .in0  (dnrtry_hpstate3_w2[`TLU_HPSTATE_WIDTH-1:0]),
4531           .in1  (wsr_data_hpstate_w2[`TLU_HPSTATE_WIDTH-1:0]),
4532           .in2  (hntrap_hpstate3_w2[`TLU_HPSTATE_WIDTH-1:0]),
4533       .sel0 (tlu_hpstate_din_sel3[0]),                 
4534           .sel1 (tlu_hpstate_wsr_sel3),
4535           .sel2 (tlu_hpstate_hnt_sel3),
4536       .dout (restore_hpstate3[`TLU_HPSTATE_WIDTH-1:0])
4537);
4538//
4539// need to initialize hpstate.enb = 0
4540// need to initialize hpstate.ibe = 0
4541// modified due to the addition of hpstate.ibe
4542`ifdef FPGA_SYN_CLK_DFF
4543dffre_s #(2) dffr_true_hpst3_enb_ibe (
4544    .din (restore_hpstate3[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]), 
4545        .q   (true_hpstate3[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4546    .rst (local_rst),
4547    .en (~(tlu_update_hpstate_l_w2[3])), .clk(clk),
4548    .se  (se),       
4549    .si  (),         
4550    .so  ()
4551);
4552`else
4553dffr_s #(2) dffr_true_hpst3_enb_ibe (
4554    .din (restore_hpstate3[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]), 
4555        .q   (true_hpstate3[`TLU_HPSTATE_WIDTH-1:`TLU_HPSTATE_WIDTH-2]),
4556    .rst (local_rst),
4557    .clk (hpstate3_clk),
4558    .se  (se),       
4559    .si  (),         
4560    .so  ()
4561);
4562`endif
4563//
4564//
4565`ifdef FPGA_SYN_CLK_DFF
4566dffe_s #(2) dff_true_hpstate3 (
4567    .din ({restore_hpstate3[`HPSTATE_RED], 
4568           restore_hpstate3[`HPSTATE_TLZ]}),
4569    .q   ({true_hpstate3[`HPSTATE_RED], 
4570           true_hpstate3[`HPSTATE_TLZ]}),
4571    .en (~(tlu_update_hpstate_l_w2[3])), .clk(clk),
4572    .se  (se),       
4573    .si  (),         
4574    .so  ()
4575);
4576`else
4577dff_s #(2) dff_true_hpstate3 (
4578    .din ({restore_hpstate3[`HPSTATE_RED], 
4579           restore_hpstate3[`HPSTATE_TLZ]}),
4580    .q   ({true_hpstate3[`HPSTATE_RED], 
4581           true_hpstate3[`HPSTATE_TLZ]}),
4582    .clk (hpstate3_clk),
4583    .se  (se),       
4584    .si  (),         
4585    .so  ()
4586);
4587`endif
4588//
4589dffe_s dffe_hpstate3_priv (
4590    .din (restore_hpstate3[`HPSTATE_PRIV]), 
4591    .q   (true_hpstate3[`HPSTATE_PRIV]), 
4592    .en  (hpstate_priv_update_w2[3]),
4593    .clk (clk),
4594    .se  (se),       
4595    .si  (),         
4596    .so  ()
4597);
4598
4599assign tlu_ifu_pstate_pef[3]   = true_pstate3[`PSTATE_PEF];
4600assign tlu_lsu_pstate_cle[3]   = true_pstate3[`PSTATE_CLE];
4601assign tlu_lsu_pstate_priv[3]  = true_pstate3[`PSTATE_PRIV];
4602assign tlu_int_pstate_ie[3]    = true_pstate3[`PSTATE_IE];
4603assign local_pstate_ie[3]      = true_pstate3[`PSTATE_IE];
4604// assign tlu_pstate_cle[3]        = true_pstate3[`PSTATE_CLE];
4605assign tlu_pstate_tle[3]           = true_pstate3[`PSTATE_TLE];
4606// assign tlu_pstate_priv[3]       = true_pstate3[`PSTATE_PRIV];
4607assign local_pstate_priv[3]    = true_pstate3[`PSTATE_PRIV];
4608assign tlu_pstate_am[3]            = true_pstate3[`PSTATE_AM];
4609// assign tlu_pstate3_mmodel[1:0] = true_pstate3[`PSTATE_MM_HI:`PSTATE_MM_LO];
4610//
4611// modified for hypervisor support
4612// assign       tlu_int_redmode[3]      = true_pstate3[`PSTATE_RED];
4613assign tlu_int_redmode[3] = true_hpstate3[`HPSTATE_RED];
4614assign tlu_lsu_redmode[3] = true_hpstate3[`HPSTATE_RED];
4615//
4616// hypervisor privilege indicator
4617assign tlu_hpstate_priv[3]   = true_hpstate3[`HPSTATE_PRIV];
4618assign local_hpstate_priv[3] = true_hpstate3[`HPSTATE_PRIV];
4619assign tcl_hpstate_priv[3]   = true_hpstate3[`HPSTATE_PRIV];
4620//
4621// hypervisor lite mode selector
4622assign tlu_hpstate_enb[3]   = true_hpstate3[`HPSTATE_ENB];
4623assign local_hpstate_enb[3] = true_hpstate3[`HPSTATE_ENB];
4624assign tcl_hpstate_enb[3]   = true_hpstate3[`HPSTATE_ENB];
4625
4626// hypervisor tlz indicator
4627assign tlu_hpstate_tlz[3] = true_hpstate3[`HPSTATE_TLZ];
4628
4629// hypervisor instruction breakpt enable
4630assign tlu_hpstate_ibe[3] = true_hpstate3[`HPSTATE_IBE];
4631
4632`endif // !`ifdef FPGA_SYN_1THREAD
4633   
4634// Mux to choose the pstate register to read base on thread
4635wire [`PSTATE_TRUE_WIDTH-1:0] pstate_rdata;
4636wire [`RDSR_HPSTATE_WIDTH-1:0] hpstate_rdata;
4637
4638`ifdef FPGA_SYN_1THREAD
4639   assign       pstate_rdata[`PSTATE_TRUE_WIDTH-1:0] = true_pstate0[`PSTATE_TRUE_WIDTH-1:0];
4640   assign       true_hpstate[`TLU_HPSTATE_WIDTH-1:0] = true_hpstate0[`TLU_HPSTATE_WIDTH-1:0];
4641`else
4642   
4643mux4ds #(12) pstate_mx_sel (
4644       .in0  (true_pstate0[`PSTATE_TRUE_WIDTH-1:0]),
4645       .in1  (true_pstate1[`PSTATE_TRUE_WIDTH-1:0]),
4646       .in2  (true_pstate2[`PSTATE_TRUE_WIDTH-1:0]),
4647       .in3  (true_pstate3[`PSTATE_TRUE_WIDTH-1:0]),
4648       .sel0 (tlu_thrd_rsel_e[0]),
4649       .sel1 (tlu_thrd_rsel_e[1]),
4650       .sel2 (tlu_thrd_rsel_e[2]),
4651       .sel3 (tlu_thrd_rsel_e[3]),
4652       .dout (pstate_rdata[`PSTATE_TRUE_WIDTH-1:0])
4653); 
4654//
4655// added for hypervisor support
4656// mux to choose the pstate register to read base on thread
4657
4658mux4ds #(`TLU_HPSTATE_WIDTH) hpstate_mx_sel (
4659       .in0  (true_hpstate0[`TLU_HPSTATE_WIDTH-1:0]),
4660       .in1  (true_hpstate1[`TLU_HPSTATE_WIDTH-1:0]),
4661       .in2  (true_hpstate2[`TLU_HPSTATE_WIDTH-1:0]),
4662       .in3  (true_hpstate3[`TLU_HPSTATE_WIDTH-1:0]),
4663       .sel0 (tlu_thrd_rsel_e[0]),
4664       .sel1 (tlu_thrd_rsel_e[1]),
4665       .sel2 (tlu_thrd_rsel_e[2]),
4666       .sel3 (tlu_thrd_rsel_e[3]),
4667       .dout (true_hpstate[`TLU_HPSTATE_WIDTH-1:0])
4668);
4669`endif // !`ifdef FPGA_SYN_1THREAD
4670   
4671//
4672// assigned the stored hpstate bits to the ASR positions
4673//
4674assign hpstate_rdata[`WSR_HPSTATE_ENB]  = true_hpstate[`HPSTATE_ENB]; 
4675assign hpstate_rdata[`WSR_HPSTATE_IBE]  = true_hpstate[`HPSTATE_IBE]; 
4676assign hpstate_rdata[`WSR_HPSTATE_RED]  = true_hpstate[`HPSTATE_RED]; 
4677assign hpstate_rdata[`WSR_HPSTATE_PRIV] = true_hpstate[`HPSTATE_PRIV]; 
4678assign hpstate_rdata[`WSR_HPSTATE_TLZ]  = true_hpstate[`HPSTATE_TLZ]; 
4679//
4680// grounding the reserved bits
4681// modified due to the addition of hpstate.ibe
4682// assign hpstate_rdata[`WSR_HPSTATE_ENB-1 :`WSR_HPSTATE_RED+1]  = 5'h00;
4683assign hpstate_rdata[`WSR_HPSTATE_IBE-1 :`WSR_HPSTATE_RED+1]  = 4'h0; 
4684assign hpstate_rdata[`WSR_HPSTATE_RED-1 :`WSR_HPSTATE_PRIV+1] = 2'b00; 
4685assign hpstate_rdata[`WSR_HPSTATE_PRIV-1:`WSR_HPSTATE_TLZ+1]  = 1'b0; 
4686//
4687// constructing data for htstate
4688//
4689wire [`RDSR_HPSTATE_WIDTH-1:0] htstate_rdata;
4690
4691// assign htstate_rdata[`WSR_HPSTATE_RED]  = tsa_rdata[`TLU_HTSTATE_HI];
4692// assign htstate_rdata[`WSR_HPSTATE_PRIV] = tsa_rdata[`TLU_HTSTATE_HI-1];
4693/* modified due to logic redistribution
4694assign htstate_rdata[`WSR_HPSTATE_IBE]  = tsa_rdata[`TLU_HTSTATE_HI];
4695assign htstate_rdata[`WSR_HPSTATE_RED]  = tsa_rdata[`TLU_HTSTATE_HI-1];
4696assign htstate_rdata[`WSR_HPSTATE_PRIV] = tsa_rdata[`TLU_HTSTATE_HI-2];
4697assign htstate_rdata[`WSR_HPSTATE_TLZ]  = tsa_rdata[`TLU_HTSTATE_LO];
4698*/
4699assign htstate_rdata[`WSR_HPSTATE_IBE]  = tsa_rdata[`TLU_RD_HTSTATE_HI]; 
4700assign htstate_rdata[`WSR_HPSTATE_RED]  = tsa_rdata[`TLU_RD_HTSTATE_HI-1]; 
4701assign htstate_rdata[`WSR_HPSTATE_PRIV] = tsa_rdata[`TLU_RD_HTSTATE_HI-2]; 
4702assign htstate_rdata[`WSR_HPSTATE_TLZ]  = tsa_rdata[`TLU_RD_HTSTATE_LO]; 
4703//
4704// grounding the reserved bits
4705// modified due to addition of hpstate.ibe
4706// assign htstate_rdata[`RDSR_HPSTATE_WIDTH-1 :`WSR_HPSTATE_RED+1] = 6'h00;
4707assign htstate_rdata[`RDSR_HPSTATE_WIDTH-1] = 1'b0; 
4708assign htstate_rdata[`WSR_HPSTATE_IBE-1 :`WSR_HPSTATE_RED+1]  = 4'h0; 
4709assign htstate_rdata[`WSR_HPSTATE_RED-1 :`WSR_HPSTATE_PRIV+1] = 2'b00; 
4710assign htstate_rdata[`WSR_HPSTATE_PRIV-1:`WSR_HPSTATE_TLZ+1]  = 1'b0; 
4711
4712//=========================================================================================
4713//      RDPR - This section has been recoded due to timing
4714//=========================================================================================
4715
4716// mux data width - 2b
4717`ifdef FPGA_SYN_1THREAD
4718   assign global_rdata[`TSA_GLOBAL_WIDTH-1:0] = tlu_gl_lvl0[`TSA_GLOBAL_WIDTH-1:0];
4719   assign hintp_rdata = tlu_hintp[0];
4720`else
4721   
4722                         
4723mux4ds #(`TSA_GLOBAL_WIDTH) mux_global_rdata (
4724       .in0  (tlu_gl_lvl0[`TSA_GLOBAL_WIDTH-1:0]),
4725       .in1  (tlu_gl_lvl1[`TSA_GLOBAL_WIDTH-1:0]),
4726       .in2  (tlu_gl_lvl2[`TSA_GLOBAL_WIDTH-1:0]),
4727       .in3  (tlu_gl_lvl3[`TSA_GLOBAL_WIDTH-1:0]),
4728       .sel0 (tlu_thrd_rsel_e[0]),
4729       .sel1 (tlu_thrd_rsel_e[1]),
4730       .sel2 (tlu_thrd_rsel_e[2]),
4731       .sel3 (tlu_thrd_rsel_e[3]),
4732       .dout (global_rdata[`TSA_GLOBAL_WIDTH-1:0])
4733);
4734//
4735// htickcmp interrupt enable
4736//
4737mux4ds #(1) mux_hintp_rdata (
4738        .in0    (tlu_hintp[0]),
4739        .in1    (tlu_hintp[1]),
4740        .in2    (tlu_hintp[2]),
4741        .in3    (tlu_hintp[3]),
4742        .sel0   (tlu_thrd_rsel_e[0]),
4743        .sel1   (tlu_thrd_rsel_e[1]),
4744        .sel2   (tlu_thrd_rsel_e[2]),
4745        .sel3   (tlu_thrd_rsel_e[3]),
4746        .dout   (hintp_rdata)
4747);
4748`endif // !`ifdef FPGA_SYN_1THREAD
4749   
4750//
4751// tstate.gl - 2b
4752assign tstate_rdata[`WSR_TSTATE_GL_HI:`WSR_TSTATE_GL_LO] = 
4753       tsa_rdata[`TLU_GL_HI:`TLU_GL_LO];
4754//
4755// tstate.ccr - 8b
4756assign tstate_rdata[`WSR_TSTATE_CCR_HI:`WSR_TSTATE_CCR_LO] = 
4757       tsa_rdata[`TLU_CCR_HI:`TLU_CCR_LO];
4758//
4759// tstate.asi - 8b
4760assign tstate_rdata[`WSR_TSTATE_ASI_HI:`WSR_TSTATE_ASI_LO] = 
4761       tsa_rdata[`TLU_ASI_HI:`TLU_ASI_LO];
4762//
4763// tstate.pstate(valid range 2) - 2b
4764assign tstate_rdata[`WSR_TSTATE_PS2_HI:`WSR_TSTATE_PS2_LO] = 
4765       tsa_rdata[`TSA_PSTATE_VRANGE2_HI:`TSA_PSTATE_VRANGE2_LO];
4766//
4767// added for to please lint
4768assign tstate_dummy_zero[1:0] = 
4769       tsa_rdata[`TSA_PSTATE_VRANGE2_LO-1:`TSA_PSTATE_VRANGE1_HI+1] & 2'b0; 
4770//
4771// tstate.pstate(valid range 1) - 4b
4772assign tstate_rdata[`WSR_TSTATE_PS1_HI:`WSR_TSTATE_PS1_LO] = 
4773       tsa_rdata[`TSA_PSTATE_VRANGE1_HI:`TSA_PSTATE_VRANGE1_LO];
4774//
4775// tstate.cwp - 3b
4776assign tstate_rdata[`WSR_TSTATE_CWP_HI:`WSR_TSTATE_CWP_LO] = 
4777       tsa_rdata[`TLU_CWP_HI:`TLU_CWP_LO];
4778//
4779// reserved bits with ASR - assign to  1'b0
4780assign tstate_rdata[`RDSR_TSTATE_WIDTH-1:`WSR_TSTATE_GL_HI+1] = 
4781       6'h00; 
4782assign tstate_rdata[`WSR_TSTATE_ASI_LO-1:`WSR_TSTATE_PS2_HI+1] = 
4783       6'h00; 
4784assign tstate_rdata[`WSR_TSTATE_PS2_LO-1:`WSR_TSTATE_PS1_HI+1] = 
4785       {1'b0, tstate_dummy_zero[1:0]}; 
4786assign tstate_rdata[`WSR_TSTATE_PS1_LO-1:`WSR_TSTATE_CWP_HI+1] = 
4787       6'h00; 
4788//
4789//============================================================================
4790// new rdpr mux coding due to timing changes
4791//============================================================================
4792//
4793// added for bug 2332
4794assign rdpr_mx1_onehot_sel = 
4795           ~(|tlu_rdpr_mx1_sel[3:1]);
4796// mux1- 64b
4797mux4ds #(`TLU_ASR_DATA_WIDTH) rdpr_mx1(
4798        .in0({tlu_tick_npt,true_tick[60:0], 2'b0}),
4799        .in1(tickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0]),
4800        .in2(stickcmp_rdata[`TLU_ASR_DATA_WIDTH-1:0]),
4801        .in3({tlu_htickcmp_intdis,htickcmp_rdata[`TLU_ASR_DATA_WIDTH-2:0]}),
4802        .sel0(rdpr_mx1_onehot_sel),
4803        .sel1(tlu_rdpr_mx1_sel[1]),
4804        .sel2(tlu_rdpr_mx1_sel[2]),
4805        .sel3(tlu_rdpr_mx1_sel[3]),
4806        .dout(tlu_rdpr_mx1_out[`TLU_ASR_DATA_WIDTH-1:0])
4807);
4808//
4809//
4810// added for bug 2332
4811assign rdpr_mx2_onehot_sel = 
4812           ~(|tlu_rdpr_mx2_sel[3:1]); 
4813//
4814// mux2 - 4b
4815mux4ds #(4) rdpr_mx2(
4816        .in0({2'b0,global_rdata[`TSA_GLOBAL_WIDTH-1:0]}),
4817        .in1({3'b0,hintp_rdata}),
4818        .in2({1'b0,tlu_trp_lvl[2:0]}),
4819        .in3(tlu_pil[3:0]),
4820        .sel0(rdpr_mx2_onehot_sel),
4821        .sel1(tlu_rdpr_mx2_sel[1]),
4822        .sel2(tlu_rdpr_mx2_sel[2]),
4823        .sel3(tlu_rdpr_mx2_sel[3]),
4824        .dout(tlu_rdpr_mx2_out[3:0])
4825);
4826//
4827// added for bug 2332
4828assign rdpr_mx3_onehot_sel = 
4829           ~(|tlu_rdpr_mx3_sel[2:1]);
4830//
4831// mux3 - 17b
4832mux3ds #(`SFTINT_WIDTH) rdpr_mx3(
4833        .in0(sftint_rdata[`SFTINT_WIDTH-1:0]),
4834        .in1({5'b0,pstate_rdata[`PSTATE_TRUE_WIDTH-1:0]}),
4835        .in2({5'b0,hpstate_rdata[`RDSR_HPSTATE_WIDTH-1:0]}),
4836        .sel0(rdpr_mx3_onehot_sel),
4837        .sel1(tlu_rdpr_mx3_sel[1]),
4838        .sel2(tlu_rdpr_mx3_sel[2]),
4839        .dout(tlu_rdpr_mx3_out[`SFTINT_WIDTH-1:0])
4840);
4841//
4842// added for bug 2332
4843assign rdpr_mx4_onehot_sel = 
4844           ~(|tlu_rdpr_mx4_sel[2:1]);
4845//
4846// mux4 - 48b
4847mux3ds #(`RDSR_TSTATE_WIDTH) rdpr_mx4(
4848        .in0({tsa_rdata[`TLU_RD_PC_HI:`TLU_RD_PC_LO],2'b00}),
4849        .in1({tsa_rdata[`TLU_RD_NPC_HI:`TLU_NPC_LO],2'b00}),
4850        // .in0({tsa_rdata[`TLU_PC_HI-1:`TLU_PC_LO],2'b00}),
4851        // .in1({tsa_rdata[`TLU_NPC_HI-1:`TLU_NPC_LO],2'b00}),
4852    .in2(tstate_rdata[`RDSR_TSTATE_WIDTH-1:0]),
4853        .sel0(rdpr_mx4_onehot_sel),
4854        .sel1(tlu_rdpr_mx4_sel[1]), 
4855        .sel2(tlu_rdpr_mx4_sel[2]), 
4856        .dout(tlu_rdpr_mx4_out[`RDSR_TSTATE_WIDTH-1:0])
4857);
4858//
4859// added for bug 2332
4860assign rdpr_mx5_onehot_sel = 
4861           ~(|tlu_rdpr_mx5_sel[3:1]);
4862//
4863// mux5 - 64b
4864mux4ds #(`TLU_ASR_DATA_WIDTH) rdpr_mx5(
4865        .in0({{16{tba_rdata[`TLU_TBA_WIDTH-1]}},
4866           tba_rdata[`TLU_TBA_WIDTH-1:0],15'h0000}),
4867        .in1({{16{htba_rdata[`TLU_HTBA_WIDTH-1]}},
4868           htba_rdata[`TLU_HTBA_WIDTH-1:0],14'h0000}),
4869        .in2(tlu_rdpr_mx1_out[`TLU_ASR_DATA_WIDTH-1:0]),
4870        .in3(tlu_pib_rsr_data_e[`TLU_ASR_DATA_WIDTH-1:0]),
4871        .sel0(rdpr_mx5_onehot_sel),
4872        .sel1(tlu_rdpr_mx5_sel[1]),
4873        .sel2(tlu_rdpr_mx5_sel[2]),
4874        .sel3(tlu_rdpr_mx5_sel[3]),
4875        .dout(tlu_rdpr_mx5_out[`TLU_ASR_DATA_WIDTH-1:0])
4876);
4877//
4878// added for bug 2332
4879assign rdpr_mx6_onehot_sel = 
4880           ~(|tlu_rdpr_mx6_sel[2:0]);
4881//
4882// mux6 - 12b
4883mux4ds #(`SFTINT_WIDTH) rdpr_mx6(
4884        .in0({8'b0,tsa_rdata[8:0]}),  // ttype
4885        .in1({5'b0,htstate_rdata[`RDSR_HPSTATE_WIDTH-1:0]}),
4886        .in2({13'b0,tlu_rdpr_mx2_out[3:0]}),
4887        .in3({tlu_rdpr_mx3_out[`SFTINT_WIDTH-1:0]}),
4888        .sel0(rdpr_mx6_onehot_sel),
4889        .sel1(tlu_rdpr_mx6_sel[0]),
4890        .sel2(tlu_rdpr_mx6_sel[1]),
4891        .sel3(tlu_rdpr_mx6_sel[2]),
4892        .dout(tlu_rdpr_mx6_out[`SFTINT_WIDTH-1:0])
4893);
4894//
4895// mux7- 64b
4896mux4ds #(`TLU_ASR_DATA_WIDTH) rdpr_mx7(
4897        .in0({{16{tlu_rdpr_mx4_out[`RDSR_TSTATE_WIDTH-1]}}, 
4898           tlu_rdpr_mx4_out[`RDSR_TSTATE_WIDTH-1:0]}),
4899        .in1(tlu_rdpr_mx5_out[`TLU_ASR_DATA_WIDTH-1:0]),
4900        .in2({47'b0,tlu_rdpr_mx6_out[`SFTINT_WIDTH-1:0]}),
4901        .in3({56'b0,lsu_tlu_rsr_data_e[7:0]}),
4902        .sel0(tlu_rdpr_mx7_sel[0]),
4903        .sel1(tlu_rdpr_mx7_sel[1]),
4904        .sel2(tlu_rdpr_mx7_sel[2]),
4905        .sel3(tlu_rdpr_mx7_sel[3]),
4906        .dout(tlu_rdpr_mx7_out[`TLU_ASR_DATA_WIDTH-1:0])
4907);
4908/*
4909mux4ds #(`TLU_ASR_DATA_WIDTH) rdpr_mx7(
4910        .in0({{16{tlu_rdpr_mx4_out[`RDSR_TSTATE_WIDTH-1]}},
4911           tlu_rdpr_mx4_out[`RDSR_TSTATE_WIDTH-1:0]}),
4912        .in1(tlu_rdpr_mx5_out[`TLU_ASR_DATA_WIDTH-1:0]),
4913        .in2({47'b0,tlu_rdpr_mx6_out[`SFTINT_WIDTH-1:0]}),
4914        .in3({56'b0,lsu_tlu_rsr_data_e[7:0]}),
4915        .sel0(tlu_rdpr_mx7_sel[0]),
4916        .sel1(tlu_rdpr_mx7_sel[1]),
4917        .sel2(tlu_rdpr_mx7_sel[2]),
4918        .sel3(tlu_rdpr_mx7_sel[3]),
4919        .dout(tlu_rdpr_mx7_out[`TLU_ASR_DATA_WIDTH-1:0])
4920);
4921*/
4922//
4923// drive rsr data to exu
4924assign tlu_exu_rsr_data_e[`TLU_ASR_DATA_WIDTH-1:0] = 
4925           tlu_rdpr_mx7_out[`TLU_ASR_DATA_WIDTH-1:0];
4926//
4927// added for timing
4928dff_s #(`TLU_ASR_DATA_WIDTH) dff_tlu_exu_rsr_data_m (
4929    .din (tlu_exu_rsr_data_e[`TLU_ASR_DATA_WIDTH-1:0]),
4930    .q   (tlu_exu_rsr_data_m[`TLU_ASR_DATA_WIDTH-1:0]),
4931    .clk (clk),
4932    .se  (se),       
4933    .si  (),         
4934    .so  ()
4935);
4936
4937endmodule
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