/* * ========== Copyright Header Begin ========================================== * * OpenSPARC T2 Processor File: kernel_handler.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 ============================================ */ .global kernel_syscall kernel_syscall: ! save globals stx %g1, [%g7+8] stx %g2, [%g7+16] stx %g3, [%g7+24] stx %g4, [%g7+32] stx %g5, [%g7+40] stx %g6, [%g7+48] setx syscall_jmptab, %g1, %g2 sllx %o1, 3, %g1 add %g2, %g1, %g2 ! %g2 = ptr into jump table based on call # ldx [%g2], %g1 jmp %g1 kernel_sysret: ! restore globals ldx [%g7+8], %g1 ldx [%g7+16], %g2 ldx [%g7+24], %g3 ldx [%g7+32], %g4 ldx [%g7+40], %g5 ldx [%g7+48], %g6 ta T_SYSRET nop ! %o2 = size in bytes ! %o3 = alignment in bytes (has to be power of 2) ! %o4 = returned pointer kernel_memalign: setx heapptr, %g1, %g2 ldx [%g2], %g1 ! %g1 = heapptr mov %o3, %g3 sub %g3, 1, %g3 ! alignment mask and %g3, %g1, %g4 brz %g4, align_done not %g3 and %g3, %g1, %g1 add %g1, %o3, %g1 align_done: mov %g1, %o4 add %g1, %o2, %g1 ba kernel_sysret stx %g1, [%g2] kernel_printhex: ba kernel_sysret ! $ EV trig_pc_d(1,expr(@VA(.KERNEL.kernel_printhex), 16, 16)) -> printhex("diagprinthex", %o2) nop kernel_printdec: ba kernel_sysret ! $ EV trig_pc_d(1,expr(@VA(.KERNEL.kernel_printdec), 16, 16)) -> printdec("diagprintdec", %o2) nop .data syscall_jmptab: .xword 0x0000000000000000 .xword kernel_memalign .xword kernel_printhex .xword kernel_printdec heapptr: .xword 0x0000000000000000 .global start_label_list start_label_list: #if defined(USER_PAGE_CUSTOM_MAP) || !defined(USER_TEXT_MT_MAP) .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL .xword USER_START_LABEL, USER_START_LABEL, USER_START_LABEL, USER_START_LABEL #else changequote([, ])dnl foreachbit([i], 64, M4_user_data_mask, [ .xword [main]i ])dnl changequote(`,')dnl' #endif .align 512 user_globals: #ifndef USER_HEAP_SIZE #define USER_HEAP_SIZE 0x2000 #endif #ifndef USER_PAGE_CUSTOM_MAP SECTION .USER_HEAP DATA_VA=USER_HEAP_DATA_VA changequote([, ])dnl forloop([i], 0, 7, [ ifdef([part_]i[_used],[ attr_data { Name = .USER_HEAP, RA = USER_HEAP_DATA_RA, PA = ra2pa2(USER_HEAP_DATA_RA,i), #ifndef USE_N1_TSB_NAMES [part_]i[_ctx_nonzero_tsb_config_0], #else [part_]i[_d_ctx_nonzero_ps0_tsb], #endif TTE_G=1, TTE_Context=0x44, 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=0, TTE_E=0, TTE_P=0, TTE_W=1 } .data .global user_heap_start user_heap_start: .skip (USER_HEAP_SIZE-0x4) .word 0x0 .end ])dnl ])dnl changequote(`,')dnl' #endif