author | vlivanov |
Wed, 24 Jul 2019 10:50:40 +0300 | |
changeset 57574 | 6a159c6c23cc |
parent 53244 | 9807daeb47c4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2016 SAP SE. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef CPU_S390_JNITYPES_S390_HPP |
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#define CPU_S390_JNITYPES_S390_HPP |
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// This file holds platform-dependent routines used to write primitive |
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// jni types to the array of arguments passed into JavaCalls::call. |
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#include "jni.h" |
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#include "memory/allocation.hpp" |
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#include "oops/oop.hpp" |
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class JNITypes : AllStatic { |
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// These functions write a java primitive type (in native format) to |
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// a java stack slot array to be passed as an argument to |
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// JavaCalls:calls. I.e., they are functionally 'push' operations |
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// if they have a 'pos' formal parameter. Note that jlongs and |
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// jdoubles are written _in reverse_ of the order in which they |
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// appear in the interpreter stack. This is because call stubs (see |
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// stubGenerator_s390.cpp) reverse the argument list constructed by |
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// JavaCallArguments (see javaCalls.hpp). |
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public: |
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// Ints are stored in native format in one JavaCallArgument slot at *to. |
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static inline void put_int(jint from, intptr_t *to) { |
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*(jint*) to = from; |
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} |
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static inline void put_int(jint from, intptr_t *to, int& pos) { |
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*(jint*) (to + pos++) = from; |
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} |
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static inline void put_int(jint *from, intptr_t *to, int& pos) { |
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*(jint*) (to + pos++) = *from; |
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} |
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// Longs are stored in native format in one JavaCallArgument slot at *(to+1). |
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static inline void put_long(jlong from, intptr_t *to) { |
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*(jlong*) (to + 1) = from; |
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} |
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static inline void put_long(jlong from, intptr_t *to, int& pos) { |
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*(jlong*) (to + 1 + pos) = from; |
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pos += 2; |
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} |
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static inline void put_long(jlong *from, intptr_t *to, int& pos) { |
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*(jlong*) (to + 1 + pos) = *from; |
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pos += 2; |
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} |
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// Oops are stored in native format in one JavaCallArgument slot at *to. |
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static inline void put_obj(oop from, intptr_t *to) { |
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*(oop*) to = from; |
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} |
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static inline void put_obj(oop from, intptr_t *to, int& pos) { |
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*(oop*) (to + pos++) = from; |
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} |
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static inline void put_obj(oop *from, intptr_t *to, int& pos) { |
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*(oop*) (to + pos++) = *from; |
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} |
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// Floats are stored in native format in one JavaCallArgument slot at *to. |
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static inline void put_float(jfloat from, intptr_t *to) { |
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*(jfloat*) to = from; |
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} |
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static inline void put_float(jfloat from, intptr_t *to, int& pos) { |
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*(jfloat*) (to + pos++) = from; |
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} |
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static inline void put_float(jfloat *from, intptr_t *to, int& pos) { |
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*(jfloat*) (to + pos++) = *from; |
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} |
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// Doubles are stored in native word format in one JavaCallArgument |
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// slot at *(to+1). |
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static inline void put_double(jdouble from, intptr_t *to) { |
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*(jdouble*) (to + 1) = from; |
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} |
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static inline void put_double(jdouble from, intptr_t *to, int& pos) { |
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*(jdouble*) (to + 1 + pos) = from; |
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pos += 2; |
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} |
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static inline void put_double(jdouble *from, intptr_t *to, int& pos) { |
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*(jdouble*) (to + 1 + pos) = *from; |
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pos += 2; |
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} |
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// The get_xxx routines, on the other hand, actually _do_ fetch |
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// java primitive types from the interpreter stack. |
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// No need to worry about alignment on z/Architecture. |
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static inline jint get_int(intptr_t *from) { |
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return *(jint*) from; |
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} |
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static inline jlong get_long(intptr_t *from) { |
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return *(jlong*) (from + 1); |
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} |
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static inline oop get_obj(intptr_t *from) { |
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return *(oop*) from; |
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} |
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static inline jfloat get_float(intptr_t *from) { |
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return *(jfloat*) from; |
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} |
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static inline jdouble get_double(intptr_t *from) { |
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return *(jdouble*) (from + 1); |
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} |
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}; |
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#endif // CPU_S390_JNITYPES_S390_HPP |