/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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
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*/
#ifndef CPU_ZERO_VM_JNITYPES_ZERO_HPP
#define CPU_ZERO_VM_JNITYPES_ZERO_HPP
#include "memory/allocation.hpp"
// This file holds platform-dependent routines used to write primitive jni
// types to the array of arguments passed into JavaCalls::call
// 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 jlong's and jdouble's are written
// _in reverse_ of the order in which they appear in the interpreter
// stack. This is because call stubs (see stubGenerator_zero.cpp)
// reverse the argument list constructed by JavaCallArguments (see
// javaCalls.hpp).
private:
// Helper routines.
static inline void put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }
static inline void put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }
public:
// Ints are stored in native format in one JavaCallArgument slot at *to.
#ifdef _LP64
// Longs are stored in native format in one JavaCallArgument slot at *(to+1).
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; }
#else
// Longs are stored in reversed native word format in two JavaCallArgument slots at *to.
// The high half is in *(to+1) and the low half in *to.
static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
#endif
// Oops are stored in native format in one JavaCallArgument slot at *to.
// Floats are stored in native format in one JavaCallArgument slot at *to.
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; }
#ifdef _LP64
// Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).
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; }
#else
// Doubles are stored in reversed native word format in two JavaCallArgument slots at *to.
static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
#endif
// The get_xxx routines, on the other hand, actually _do_ fetch
// java primitive types from the interpreter stack.
#ifdef _LP64
#else
static inline jlong get_long(intptr_t *from) { return ((jlong)(*( signed int *)((jint *)from )) << 32) |
#endif
#ifdef _LP64
#else
static inline jdouble get_double(intptr_t *from) { jlong jl = ((jlong)(*( signed int *)((jint *)from )) << 32) |
#endif
};
#endif // CPU_ZERO_VM_JNITYPES_ZERO_HPP