/* * ========== Copyright Header Begin ========================================== * * OpenSPARC T2 Processor File: lsu_hang_cwp.s * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved * 4150 Network Circle, Santa Clara, California 95054, U.S.A. * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * For the avoidance of doubt, and except that if any non-GPL license * choice is available it will apply instead, Sun elects to use only * the General Public License version 2 (GPLv2) at this time for any * software where a choice of GPL license versions is made * available with the language indicating that GPLv2 or any later version * may be used, or where a choice of which version of the GPL is applied is * otherwise unspecified. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * * ========== Copyright Header End ============================================ */ #define MAIN_PAGE_HV_ALSO #include "hboot.s" #ifndef THREADS #define THREADS 8 #endif #ifndef LOOPS #define LOOPS 30 #endif !SIMS+ARGS: -vcs_run_args=+min_ccx_gnt_delay=500 !SIMS+ARGS: -vcs_run_args=+max_ccx_gnt_delay=1000 ! Variable usage ! %o0, %o1 used in ldd ! %o2 is location of TID number - local_counter ! incremented each loop to next line ! %o3 is thread specific scratch memory location ! %o5 is static counter ! %o7 is loop count ! %l1 is my TID ! Algorithm : ! ! for (loop count) { ! until ([%o2] == mytid) {st %o1, [%o3], ld [%o3]} ! increment [%o5] ! increment [%o2] ! until ([%o5]==max_thread) {} ! increment %o2 ! reset [%o2] ! } ! .global main main: /* test begin */ ta T_CHANGE_HPRIV ldxa [%g0]0x63, %l1 ! my TID mov LOOPS, %o7 setx static_counter, %o0, %o5 setx thread_scratch, %o0, %o3 sllx %l1, 6, %o6 add %o3, %o6, %o3 ! Offset by 2xTID setx local_counter , %o0, %o2 cmp %l1, THREADS-1 be lone_star nop main_loop: ldd [%o2], %o0 wait_for_tid_match: st %o1, [%o3] ld [%o3], %o4 cmp %l1, %o0 bne,a wait_for_tid_match ldd [%o2], %o0 cmp %l1, %o4 bne,a wait_for_tid_match ldd [%o2], %o0 add %l1, 1, %l2 st %l2, [%o5] ! Set [%o5] = tid add %l1, 1, %l3 std %l2, [%o2] ! Set [%o2] = tid ld [%o5], %o6 wait_for_tid_match2: cmp %o6, THREADS-1 bne,a wait_for_tid_match2 ld [%o5], %o6 add %o2, 0x80, %o2 dec %o7 brnz %o7, main_loop nop nop ta T_GOOD_TRAP nop nop lone_star: mov (LOOPS *5), %g7 lone_loop: wrpr 1, %cwp rdpr %cwp, %g1 wrpr 2, %cwp rdpr %cwp, %g1 wrpr 3, %cwp rdpr %cwp, %g1 wrpr 4, %cwp rdpr %cwp, %g1 wrpr 5, %cwp rdpr %cwp, %g1 wrpr 6, %cwp rdpr %cwp, %g1 wrpr 7, %cwp rdpr %cwp, %g1 wrpr 1, %cwp rdpr %cwp, %g1 wrpr 2, %cwp rdpr %cwp, %g1 wrpr 3, %cwp rdpr %cwp, %g1 wrpr 4, %cwp rdpr %cwp, %g1 wrpr 5, %cwp rdpr %cwp, %g1 wrpr 6, %cwp rdpr %cwp, %g1 wrpr 7, %cwp rdpr %cwp, %g1 wrpr 1, %cwp rdpr %cwp, %g1 wrpr 2, %cwp rdpr %cwp, %g1 wrpr 3, %cwp rdpr %cwp, %g1 wrpr 4, %cwp rdpr %cwp, %g1 wrpr 5, %cwp rdpr %cwp, %g1 wrpr 6, %cwp rdpr %cwp, %g1 wrpr 7, %cwp rdpr %cwp, %g1 wrpr 1, %cwp rdpr %cwp, %g1 wrpr 2, %cwp rdpr %cwp, %g1 wrpr 3, %cwp rdpr %cwp, %g1 wrpr 4, %cwp rdpr %cwp, %g1 wrpr 5, %cwp rdpr %cwp, %g1 wrpr 6, %cwp rdpr %cwp, %g1 wrpr 7, %cwp rdpr %cwp, %g1 dec %g7 brnz %g7, lone_loop nop nop ta T_GOOD_TRAP .data static_counter: .xword 0 .xword 0 thread_scratch: .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 local_counter: .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0 .xword 0 0