duke@435: /*
trims@2708:  * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "runtime/stackValueCollection.hpp"
stefank@2314: #ifdef TARGET_ARCH_x86
stefank@2314: # include "jniTypes_x86.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_ARCH_sparc
stefank@2314: # include "jniTypes_sparc.hpp"
stefank@2314: #endif
stefank@2314: #ifdef TARGET_ARCH_zero
stefank@2314: # include "jniTypes_zero.hpp"
stefank@2314: #endif
bobv@2508: #ifdef TARGET_ARCH_arm
bobv@2508: # include "jniTypes_arm.hpp"
bobv@2508: #endif
bobv@2508: #ifdef TARGET_ARCH_ppc
bobv@2508: # include "jniTypes_ppc.hpp"
bobv@2508: #endif
duke@435: 
duke@435: jint StackValueCollection::int_at(int slot) const {
duke@435:   intptr_t val =  at(slot)->get_int();
duke@435:   jint ival = *((jint*) (&val));
duke@435:   return ival;
duke@435: }
duke@435: 
duke@435: jlong StackValueCollection::long_at(int slot) const {
duke@435: #ifdef _LP64
duke@435:   return at(slot+1)->get_int();
duke@435: #else
duke@435:   union {
duke@435:     jlong jl;
duke@435:     jint  array[2];
duke@435:   } value;
duke@435:   // Interpreter stack is reversed in memory:
duke@435:   // low memory location is in higher java local slot.
duke@435:   value.array[0] = at(slot+1)->get_int();
duke@435:   value.array[1] = at(slot  )->get_int();
duke@435:   return value.jl;
duke@435: #endif
duke@435: }
duke@435: 
duke@435: Handle StackValueCollection::obj_at(int slot) const {
duke@435:   return at(slot)->get_obj();
duke@435: }
duke@435: 
duke@435: jfloat StackValueCollection::float_at(int slot) const {
duke@435:   intptr_t res = at(slot)->get_int();
duke@435:   return *((jfloat*) (&res));
duke@435: }
duke@435: 
duke@435: jdouble StackValueCollection::double_at(int slot) const {
duke@435: #ifdef _LP64
duke@435:   intptr_t res = at(slot+1)->get_int();
duke@435:   return *((jdouble*) (&res));
duke@435: #else
duke@435:   union {
duke@435:     jdouble jd;
duke@435:     jint    array[2];
duke@435:   } value;
duke@435:   // Interpreter stack is reversed in memory:
duke@435:   // low memory location is in higher java local slot.
duke@435:   value.array[0] = at(slot+1)->get_int();
duke@435:   value.array[1] = at(slot  )->get_int();
duke@435:   return value.jd;
duke@435: #endif
duke@435: }
duke@435: 
duke@435: void StackValueCollection::set_int_at(int slot, jint value) {
duke@435:   intptr_t val;
duke@435:   *((jint*) (&val)) = value;
duke@435:   at(slot)->set_int(val);
duke@435: }
duke@435: 
duke@435: void StackValueCollection::set_long_at(int slot, jlong value) {
duke@435: #ifdef _LP64
duke@435:   at(slot+1)->set_int(value);
duke@435: #else
duke@435:   union {
duke@435:     jlong jl;
duke@435:     jint  array[2];
duke@435:   } x;
duke@435:   // Interpreter stack is reversed in memory:
duke@435:   // low memory location is in higher java local slot.
duke@435:   x.jl = value;
duke@435:   at(slot+1)->set_int(x.array[0]);
duke@435:   at(slot+0)->set_int(x.array[1]);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: void StackValueCollection::set_obj_at(int slot, Handle value) {
duke@435:   at(slot)->set_obj(value);
duke@435: }
duke@435: 
duke@435: void StackValueCollection::set_float_at(int slot, jfloat value) {
duke@435: #ifdef _LP64
duke@435:   union {
duke@435:     intptr_t jd;
duke@435:     jint    array[2];
duke@435:   } val;
duke@435:   // Interpreter stores 32 bit floats in first half of 64 bit word.
duke@435:   val.array[0] = *(jint*)(&value);
duke@435:   val.array[1] = 0;
duke@435:   at(slot)->set_int(val.jd);
duke@435: #else
duke@435:   at(slot)->set_int(*(jint*)(&value));
duke@435: #endif
duke@435: }
duke@435: 
duke@435: void StackValueCollection::set_double_at(int slot, jdouble value) {
duke@435: #ifdef _LP64
duke@435:   at(slot+1)->set_int(*(intptr_t*)(&value));
duke@435: #else
duke@435:   union {
duke@435:     jdouble jd;
duke@435:     jint    array[2];
duke@435:   } x;
duke@435:   // Interpreter stack is reversed in memory:
duke@435:   // low memory location is in higher java local slot.
duke@435:   x.jd = value;
duke@435:   at(slot+1)->set_int(x.array[0]);
duke@435:   at(slot+0)->set_int(x.array[1]);
duke@435: #endif
duke@435: }
duke@435: 
duke@435: #ifndef PRODUCT
duke@435: void StackValueCollection::print() {
duke@435:   for(int index = 0; index < size(); index++) {
duke@435:     tty->print("\t  %2d ", index);
duke@435:     at(index)->print_on(tty);
duke@435:     if( at(index  )->type() == T_INT &&
duke@435:         index+1 < size() &&
duke@435:         at(index+1)->type() == T_INT ) {
duke@435:       tty->print("  " INT64_FORMAT " (long)", long_at(index));
duke@435:       tty->cr();
duke@435:       tty->print("\t     %.15e (double)", double_at(index));
duke@435:       tty->print("  " PTR64_FORMAT " (longhex)", long_at(index));
duke@435:     }
duke@435:     tty->cr();
duke@435:   }
duke@435: }
duke@435: #endif