/*

 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "asm/assembler.hpp"

#include "assembler_sparc.inline.hpp"

#include "runtime/os.hpp"

#include "runtime/threadLocalStorage.hpp"

#include <sys/trap.h>          // For trap numbers

#include <v9/sys/psr_compat.h> // For V8 compatibility

void MacroAssembler::read_ccr_trap(Register ccr_save) {

  // Execute a trap to get the PSR, mask and shift

  // to get the condition codes.

  get_psr_trap();

  nop();

  set(PSR_ICC, ccr_save);

  and3(O0, ccr_save, ccr_save);

  srl(ccr_save, PSR_ICC_SHIFT, ccr_save);

}

void MacroAssembler::write_ccr_trap(Register ccr_save, Register scratch1, Register scratch2) {

  // Execute a trap to get the PSR, shift back

  // the condition codes, mask the condition codes

  // back into and PSR and trap to write back the

  // PSR.

  sll(ccr_save, PSR_ICC_SHIFT, scratch2);

  get_psr_trap();

  nop();

  set(~PSR_ICC, scratch1);

  and3(O0, scratch1, O0);

  or3(O0, scratch2, O0);

  set_psr_trap();

  nop();

}

void MacroAssembler::flush_windows_trap() { trap(ST_FLUSH_WINDOWS); }

void MacroAssembler::clean_windows_trap() { trap(ST_CLEAN_WINDOWS); }

void MacroAssembler::get_psr_trap()       { trap(ST_GETPSR); }

void MacroAssembler::set_psr_trap()       { trap(ST_SETPSR); }