1 /* 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "asm/assembler.hpp" 27 #include "assembler_sparc.inline.hpp" 28 #include "runtime/os.hpp" 29 #include "runtime/threadLocalStorage.hpp" 30 31 #include <sys/trap.h> // For trap numbers 32 #include <v9/sys/psr_compat.h> // For V8 compatibility 33 34 void MacroAssembler::read_ccr_trap(Register ccr_save) { 35 // Execute a trap to get the PSR, mask and shift 36 // to get the condition codes. 37 get_psr_trap(); 38 nop(); 39 set(PSR_ICC, ccr_save); 40 and3(O0, ccr_save, ccr_save); 41 srl(ccr_save, PSR_ICC_SHIFT, ccr_save); 42 } 43 44 void MacroAssembler::write_ccr_trap(Register ccr_save, Register scratch1, Register scratch2) { 45 // Execute a trap to get the PSR, shift back 46 // the condition codes, mask the condition codes 47 // back into and PSR and trap to write back the 48 // PSR. 49 sll(ccr_save, PSR_ICC_SHIFT, scratch2); 50 get_psr_trap(); 51 nop(); 52 set(~PSR_ICC, scratch1); 53 and3(O0, scratch1, O0); 54 or3(O0, scratch2, O0); 55 set_psr_trap(); 56 nop(); 57 } 58 59 void MacroAssembler::flush_windows_trap() { trap(ST_FLUSH_WINDOWS); } 60 void MacroAssembler::clean_windows_trap() { trap(ST_CLEAN_WINDOWS); } 61 void MacroAssembler::get_psr_trap() { trap(ST_GETPSR); } 62 void MacroAssembler::set_psr_trap() { trap(ST_SETPSR); }