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src/cpu/x86/vm/jniTypes_x86.hpp@04d83ba48607 (annotated)

src/cpu/x86/vm/jniTypes_x86.hpp

Thu, 24 May 2018 17:06:56 +0800

author

aoqi

date

Thu, 24 May 2018 17:06:56 +0800

changeset 8604

04d83ba48607

parent 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1998, 2010, 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	#ifndef CPU_X86_VM_JNITYPES_X86_HPP
aoqi@0	26	#define CPU_X86_VM_JNITYPES_X86_HPP
aoqi@0	27
aoqi@0	28	#include "memory/allocation.hpp"
aoqi@0	29	#include "oops/oop.hpp"
aoqi@0	30	#include "prims/jni.h"
aoqi@0	31
aoqi@0	32	// This file holds platform-dependent routines used to write primitive jni
aoqi@0	33	// types to the array of arguments passed into JavaCalls::call
aoqi@0	34
aoqi@0	35	class JNITypes : AllStatic {
aoqi@0	36	// These functions write a java primitive type (in native format)
aoqi@0	37	// to a java stack slot array to be passed as an argument to JavaCalls:calls.
aoqi@0	38	// I.e., they are functionally 'push' operations if they have a 'pos'
aoqi@0	39	// formal parameter. Note that jlong's and jdouble's are written
aoqi@0	40	// _in reverse_ of the order in which they appear in the interpreter
aoqi@0	41	// stack. This is because call stubs (see stubGenerator_sparc.cpp)
aoqi@0	42	// reverse the argument list constructed by JavaCallArguments (see
aoqi@0	43	// javaCalls.hpp).
aoqi@0	44
aoqi@0	45	private:
aoqi@0	46
aoqi@0	47	#ifndef AMD64
aoqi@0	48	// 32bit Helper routines.
aoqi@0	49	static inline void put_int2r(jint *from, intptr_t *to) { *(jint *)(to++) = from[1];
aoqi@0	50	*(jint *)(to ) = from[0]; }
aoqi@0	51	static inline void put_int2r(jint *from, intptr_t *to, int& pos) { put_int2r(from, to + pos); pos += 2; }
aoqi@0	52	#endif // AMD64
aoqi@0	53
aoqi@0	54	public:
aoqi@0	55	// Ints are stored in native format in one JavaCallArgument slot at *to.
aoqi@0	56	static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
aoqi@0	57	static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
aoqi@0	58	static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
aoqi@0	59
aoqi@0	60	#ifdef AMD64
aoqi@0	61	// Longs are stored in native format in one JavaCallArgument slot at
aoqi@0	62	// *(to+1).
aoqi@0	63	static inline void put_long(jlong from, intptr_t *to) {
aoqi@0	64	*(jlong*) (to + 1) = from;
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	static inline void put_long(jlong from, intptr_t *to, int& pos) {
aoqi@0	68	*(jlong*) (to + 1 + pos) = from;
aoqi@0	69	pos += 2;
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	static inline void put_long(jlong *from, intptr_t *to, int& pos) {
aoqi@0	73	*(jlong*) (to + 1 + pos) = *from;
aoqi@0	74	pos += 2;
aoqi@0	75	}
aoqi@0	76	#else
aoqi@0	77	// Longs are stored in big-endian word format in two JavaCallArgument slots at *to.
aoqi@0	78	// The high half is in *to and the low half in *(to+1).
aoqi@0	79	static inline void put_long(jlong from, intptr_t *to) { put_int2r((jint *)&from, to); }
aoqi@0	80	static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, to, pos); }
aoqi@0	81	static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, to, pos); }
aoqi@0	82	#endif // AMD64
aoqi@0	83
aoqi@0	84	// Oops are stored in native format in one JavaCallArgument slot at *to.
aoqi@0	85	static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
aoqi@0	86	static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
aoqi@0	87	static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
aoqi@0	88
aoqi@0	89	// Floats are stored in native format in one JavaCallArgument slot at *to.
aoqi@0	90	static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
aoqi@0	91	static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
aoqi@0	92	static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
aoqi@0	93
aoqi@0	94	#undef _JNI_SLOT_OFFSET
aoqi@0	95	#ifdef AMD64
aoqi@0	96	#define _JNI_SLOT_OFFSET 1
aoqi@0	97	// Doubles are stored in native word format in one JavaCallArgument
aoqi@0	98	// slot at *(to+1).
aoqi@0	99	static inline void put_double(jdouble from, intptr_t *to) {
aoqi@0	100	*(jdouble*) (to + 1) = from;
aoqi@0	101	}
aoqi@0	102
aoqi@0	103	static inline void put_double(jdouble from, intptr_t *to, int& pos) {
aoqi@0	104	*(jdouble*) (to + 1 + pos) = from;
aoqi@0	105	pos += 2;
aoqi@0	106	}
aoqi@0	107
aoqi@0	108	static inline void put_double(jdouble *from, intptr_t *to, int& pos) {
aoqi@0	109	*(jdouble*) (to + 1 + pos) = *from;
aoqi@0	110	pos += 2;
aoqi@0	111	}
aoqi@0	112	#else
aoqi@0	113	#define _JNI_SLOT_OFFSET 0
aoqi@0	114	// Doubles are stored in big-endian word format in two JavaCallArgument slots at *to.
aoqi@0	115	// The high half is in *to and the low half in *(to+1).
aoqi@0	116	static inline void put_double(jdouble from, intptr_t *to) { put_int2r((jint *)&from, to); }
aoqi@0	117	static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, to, pos); }
aoqi@0	118	static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, to, pos); }
aoqi@0	119	#endif // AMD64
aoqi@0	120
aoqi@0	121
aoqi@0	122	// The get_xxx routines, on the other hand, actually _do_ fetch
aoqi@0	123	// java primitive types from the interpreter stack.
aoqi@0	124	// No need to worry about alignment on Intel.
aoqi@0	125	static inline jint get_int (intptr_t *from) { return *(jint *) from; }
aoqi@0	126	static inline jlong get_long (intptr_t *from) { return *(jlong *) (from + _JNI_SLOT_OFFSET); }
aoqi@0	127	static inline oop get_obj (intptr_t *from) { return *(oop *) from; }
aoqi@0	128	static inline jfloat get_float (intptr_t *from) { return *(jfloat *) from; }
aoqi@0	129	static inline jdouble get_double(intptr_t *from) { return *(jdouble *)(from + _JNI_SLOT_OFFSET); }
aoqi@0	130	#undef _JNI_SLOT_OFFSET
aoqi@0	131	};
aoqi@0	132
aoqi@0	133	#endif // CPU_X86_VM_JNITYPES_X86_HPP