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src/share/vm/runtime/stackValueCollection.cpp@f90c822e73f8 (annotated)

src/share/vm/runtime/stackValueCollection.cpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 1

2d8a650513c2

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "runtime/stackValueCollection.hpp"
aoqi@0	27	#ifdef TARGET_ARCH_x86
aoqi@0	28	# include "jniTypes_x86.hpp"
aoqi@0	29	#endif
aoqi@0	30	#ifdef TARGET_ARCH_sparc
aoqi@0	31	# include "jniTypes_sparc.hpp"
aoqi@0	32	#endif
aoqi@0	33	#ifdef TARGET_ARCH_zero
aoqi@0	34	# include "jniTypes_zero.hpp"
aoqi@0	35	#endif
aoqi@0	36	#ifdef TARGET_ARCH_arm
aoqi@0	37	# include "jniTypes_arm.hpp"
aoqi@0	38	#endif
aoqi@0	39	#ifdef TARGET_ARCH_ppc
aoqi@0	40	# include "jniTypes_ppc.hpp"
aoqi@0	41	#endif
aoqi@0	42
aoqi@0	43	PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
aoqi@0	44
aoqi@0	45	jint StackValueCollection::int_at(int slot) const {
aoqi@0	46	intptr_t val = at(slot)->get_int();
aoqi@0	47	jint ival = *((jint*) (&val));
aoqi@0	48	return ival;
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	jlong StackValueCollection::long_at(int slot) const {
aoqi@0	52	#ifdef _LP64
aoqi@0	53	return at(slot+1)->get_int();
aoqi@0	54	#else
aoqi@0	55	union {
aoqi@0	56	jlong jl;
aoqi@0	57	jint array[2];
aoqi@0	58	} value;
aoqi@0	59	// Interpreter stack is reversed in memory:
aoqi@0	60	// low memory location is in higher java local slot.
aoqi@0	61	value.array[0] = at(slot+1)->get_int();
aoqi@0	62	value.array[1] = at(slot )->get_int();
aoqi@0	63	return value.jl;
aoqi@0	64	#endif
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	Handle StackValueCollection::obj_at(int slot) const {
aoqi@0	68	return at(slot)->get_obj();
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	jfloat StackValueCollection::float_at(int slot) const {
aoqi@0	72	intptr_t res = at(slot)->get_int();
aoqi@0	73	return *((jfloat*) (&res));
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	jdouble StackValueCollection::double_at(int slot) const {
aoqi@0	77	#ifdef _LP64
aoqi@0	78	intptr_t res = at(slot+1)->get_int();
aoqi@0	79	return *((jdouble*) (&res));
aoqi@0	80	#else
aoqi@0	81	union {
aoqi@0	82	jdouble jd;
aoqi@0	83	jint array[2];
aoqi@0	84	} value;
aoqi@0	85	// Interpreter stack is reversed in memory:
aoqi@0	86	// low memory location is in higher java local slot.
aoqi@0	87	value.array[0] = at(slot+1)->get_int();
aoqi@0	88	value.array[1] = at(slot )->get_int();
aoqi@0	89	return value.jd;
aoqi@0	90	#endif
aoqi@0	91	}
aoqi@0	92
aoqi@0	93	void StackValueCollection::set_int_at(int slot, jint value) {
aoqi@0	94	intptr_t val;
aoqi@0	95	*((jint*) (&val)) = value;
aoqi@0	96	at(slot)->set_int(val);
aoqi@0	97	}
aoqi@0	98
aoqi@0	99	void StackValueCollection::set_long_at(int slot, jlong value) {
aoqi@0	100	#ifdef _LP64
aoqi@0	101	at(slot+1)->set_int(value);
aoqi@0	102	#else
aoqi@0	103	union {
aoqi@0	104	jlong jl;
aoqi@0	105	jint array[2];
aoqi@0	106	} x;
aoqi@0	107	// Interpreter stack is reversed in memory:
aoqi@0	108	// low memory location is in higher java local slot.
aoqi@0	109	x.jl = value;
aoqi@0	110	at(slot+1)->set_int(x.array[0]);
aoqi@0	111	at(slot+0)->set_int(x.array[1]);
aoqi@0	112	#endif
aoqi@0	113	}
aoqi@0	114
aoqi@0	115	void StackValueCollection::set_obj_at(int slot, Handle value) {
aoqi@0	116	at(slot)->set_obj(value);
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	void StackValueCollection::set_float_at(int slot, jfloat value) {
aoqi@0	120	#ifdef _LP64
aoqi@0	121	union {
aoqi@0	122	intptr_t jd;
aoqi@0	123	jint array[2];
aoqi@0	124	} val;
aoqi@0	125	// Interpreter stores 32 bit floats in first half of 64 bit word.
aoqi@0	126	val.array[0] = *(jint*)(&value);
aoqi@0	127	val.array[1] = 0;
aoqi@0	128	at(slot)->set_int(val.jd);
aoqi@0	129	#else
aoqi@0	130	at(slot)->set_int(*(jint*)(&value));
aoqi@0	131	#endif
aoqi@0	132	}
aoqi@0	133
aoqi@0	134	void StackValueCollection::set_double_at(int slot, jdouble value) {
aoqi@0	135	#ifdef _LP64
aoqi@0	136	at(slot+1)->set_int(*(intptr_t*)(&value));
aoqi@0	137	#else
aoqi@0	138	union {
aoqi@0	139	jdouble jd;
aoqi@0	140	jint array[2];
aoqi@0	141	} x;
aoqi@0	142	// Interpreter stack is reversed in memory:
aoqi@0	143	// low memory location is in higher java local slot.
aoqi@0	144	x.jd = value;
aoqi@0	145	at(slot+1)->set_int(x.array[0]);
aoqi@0	146	at(slot+0)->set_int(x.array[1]);
aoqi@0	147	#endif
aoqi@0	148	}
aoqi@0	149
aoqi@0	150	#ifndef PRODUCT
aoqi@0	151	void StackValueCollection::print() {
aoqi@0	152	for(int index = 0; index < size(); index++) {
aoqi@0	153	tty->print("\t %2d ", index);
aoqi@0	154	at(index)->print_on(tty);
aoqi@0	155	if( at(index )->type() == T_INT &&
aoqi@0	156	index+1 < size() &&
aoqi@0	157	at(index+1)->type() == T_INT ) {
aoqi@0	158	tty->print(" " INT64_FORMAT " (long)", long_at(index));
aoqi@0	159	tty->cr();
aoqi@0	160	tty->print("\t %.15e (double)", double_at(index));
aoqi@0	161	tty->print(" " PTR64_FORMAT " (longhex)", long_at(index));
aoqi@0	162	}
aoqi@0	163	tty->cr();
aoqi@0	164	}
aoqi@0	165	}
aoqi@0	166	#endif