/* * ========== Copyright Header Begin ========================================== * * OpenSPARC T2 Processor File: tso_n1_self_mod11.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_BASE_DATA_ADDR 0x160000 #define MAIN_BASE_TEXT_ADDR 0x150000 #define MAIN_BASE_DATA_ADDR_RA 0x100160000 #define MAIN_BASE_TEXT_ADDR_RA 0x100150000 #define USER_PAGE_CUSTOM_MAP #include "hboot.s" SECTION .MAIN TEXT_VA=0x150000, DATA_VA=0x160000 attr_text { Name = .MAIN, VA=MAIN_BASE_TEXT_ADDR, RA=MAIN_BASE_TEXT_ADDR_RA, PA=ra2pa(MAIN_BASE_TEXT_ADDR_RA,0), part_0_ctx_nonzero_tsb_config_0, TTE_G=0, TTE_Context=PCONTEXT, TTE_V=1, TTE_Size=0, TTE_NFO=0, TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0, TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_EP=1, TTE_P=0, TTE_W=1 } attr_data { Name = .MAIN, VA=MAIN_BASE_DATA_ADDR, RA=MAIN_BASE_DATA_ADDR_RA, PA=ra2pa(MAIN_BASE_DATA_ADDR_RA,0), part_0_ctx_nonzero_tsb_config_0, TTE_G=0, TTE_Context=PCONTEXT, TTE_V=1, TTE_Size=0, TTE_NFO=0, TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0, TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_P=0, TTE_W=1 } .text .global main main: setx label0, %l0,%o0 ! prepare the addresses setx label1, %l0,%o1 setx label2, %l0,%o2 setx label3, %l0,%o3 setx label4, %l0,%o4 setx label5, %l0,%o5 setx label6, %l0,%o6 setx label7, %l0,%o7 setx 0xdeadbeef, %l0, %i1 ! bad data . setx 0x20, %l0, %l2 ! loop counter setx pref_label, %l0,%g1 ! the good instruction ld [%g1], %i0 ! goes to %i0 setx user_data_start, %l0,%g1 or %g0, 0x1, %i2 ! some stores for noise... setx 0x40, %l0, %l3 loop1: st %i2, [%g1] add %i2, 1, %i2 add %g1, 0x40, %g1 ! addr + 0x40 dec %l3 brnz,pt %l3, loop1 nop out_of_loop1: membar #Sync setx user_data_start, %l0,%g1 ba label0a prefetch [%g1], #n_writes pref_label: prefetch [%g1], #n_writes ! The real self-modifying code starts here. !========================================== label0a: st %i0, [%o0] ! store good data to label0 flush %o0 label0: ta T_BAD_TRAP ! st %i0, [%o1] ! store good data to label1 flush %o0 ! add %g1, 0x40, %g1 prefetch [%g1], #n_writes ! prefetches are for noise... label1: ta T_BAD_TRAP ! st %i0, [%o2] ! etc... flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label2: ta T_BAD_TRAP ! st %i0, [%o3] flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label3: ta T_BAD_TRAP ! st %i0, [%o4] ! flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label4: ta T_BAD_TRAP ! st %i0, [%o5] ! flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label5: ta T_BAD_TRAP ! st %i0, [%o6] ! flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label6: ta T_BAD_TRAP ! st %i0, [%o7] flush %o0 ! prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes prefetch [%g1], #n_writes add %g1, 0x40, %g1 label7: ta T_BAD_TRAP ! st %i0, [%o0] flush %o0 ! st %i1, [%o0] ! store bad data to all the labels st %i1, [%o1] st %i1, [%o2] st %i1, [%o3] st %i1, [%o4] st %i1, [%o5] st %i1, [%o6] st %i1, [%o7] dec %l2 ! and loop again. brnz,pt %l2, label0a prefetch [%g1], #n_writes normal_end: ta T_GOOD_TRAP bad_end: ta T_BAD_TRAP user_text_end: /*********************************************************************** Test case data start ***********************************************************************/ .data .align 0x100 user_data_start: .skip 2048 user_data_end: