| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2016 SAP SE. 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. |
| * |
| */ |
| |
| #ifndef CPU_S390_VM_JNITYPES_S390_HPP |
| #define CPU_S390_VM_JNITYPES_S390_HPP |
| |
| // This file holds platform-dependent routines used to write primitive |
| // jni types to the array of arguments passed into JavaCalls::call. |
| |
| #include "memory/allocation.hpp" |
| #include "oops/oop.hpp" |
| #include "prims/jni.h" |
| |
| class JNITypes : AllStatic { |
| // These functions write a java primitive type (in native format) to |
| // a java stack slot array to be passed as an argument to |
| // JavaCalls:calls. I.e., they are functionally 'push' operations |
| // if they have a 'pos' formal parameter. Note that jlongs and |
| // jdoubles are written _in reverse_ of the order in which they |
| // appear in the interpreter stack. This is because call stubs (see |
| // stubGenerator_s390.cpp) reverse the argument list constructed by |
| // JavaCallArguments (see javaCalls.hpp). |
| |
| public: |
| // Ints are stored in native format in one JavaCallArgument slot at *to. |
| static inline void put_int(jint from, intptr_t *to) { |
| *(jint*) to = from; |
| } |
| |
| static inline void put_int(jint from, intptr_t *to, int& pos) { |
| *(jint*) (to + pos++) = from; |
| } |
| |
| static inline void put_int(jint *from, intptr_t *to, int& pos) { |
| *(jint*) (to + pos++) = *from; |
| } |
| |
| // Longs are stored in native format in one JavaCallArgument slot at *(to+1). |
| static inline void put_long(jlong from, intptr_t *to) { |
| *(jlong*) (to + 1) = from; |
| } |
| |
| static inline void put_long(jlong from, intptr_t *to, int& pos) { |
| *(jlong*) (to + 1 + pos) = from; |
| pos += 2; |
| } |
| |
| static inline void put_long(jlong *from, intptr_t *to, int& pos) { |
| *(jlong*) (to + 1 + pos) = *from; |
| pos += 2; |
| } |
| |
| // Oops are stored in native format in one JavaCallArgument slot at *to. |
| static inline void put_obj(oop from, intptr_t *to) { |
| *(oop*) to = from; |
| } |
| |
| static inline void put_obj(oop from, intptr_t *to, int& pos) { |
| *(oop*) (to + pos++) = from; |
| } |
| |
| static inline void put_obj(oop *from, intptr_t *to, int& pos) { |
| *(oop*) (to + pos++) = *from; |
| } |
| |
| // Floats are stored in native format in one JavaCallArgument slot at *to. |
| static inline void put_float(jfloat from, intptr_t *to) { |
| *(jfloat*) to = from; |
| } |
| |
| static inline void put_float(jfloat from, intptr_t *to, int& pos) { |
| *(jfloat*) (to + pos++) = from; |
| } |
| |
| static inline void put_float(jfloat *from, intptr_t *to, int& pos) { |
| *(jfloat*) (to + pos++) = *from; |
| } |
| |
| // Doubles are stored in native word format in one JavaCallArgument |
| // slot at *(to+1). |
| static inline void put_double(jdouble from, intptr_t *to) { |
| *(jdouble*) (to + 1) = from; |
| } |
| |
| static inline void put_double(jdouble from, intptr_t *to, int& pos) { |
| *(jdouble*) (to + 1 + pos) = from; |
| pos += 2; |
| } |
| |
| static inline void put_double(jdouble *from, intptr_t *to, int& pos) { |
| *(jdouble*) (to + 1 + pos) = *from; |
| pos += 2; |
| } |
| |
| // The get_xxx routines, on the other hand, actually _do_ fetch |
| // java primitive types from the interpreter stack. |
| // No need to worry about alignment on z/Architecture. |
| static inline jint get_int(intptr_t *from) { |
| return *(jint*) from; |
| } |
| |
| static inline jlong get_long(intptr_t *from) { |
| return *(jlong*) (from + 1); |
| } |
| |
| static inline oop get_obj(intptr_t *from) { |
| return *(oop*) from; |
| } |
| |
| static inline jfloat get_float(intptr_t *from) { |
| return *(jfloat*) from; |
| } |
| |
| static inline jdouble get_double(intptr_t *from) { |
| return *(jdouble*) (from + 1); |
| } |
| }; |
| |
| #endif // CPU_S390_VM_JNITYPES_S390_HPP |