jdk8-mips64-public/hotspot: src/cpu/zero/vm/jniTypes

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tag: jdk8u25-b17

     1 /*

     2  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef CPU_ZERO_VM_JNITYPES_ZERO_HPP

    26 #define CPU_ZERO_VM_JNITYPES_ZERO_HPP

    28 #include "memory/allocation.hpp"

    29 #include "oops/oop.hpp"

    30 #include "prims/jni.h"

    32 // This file holds platform-dependent routines used to write primitive jni

    33 // types to the array of arguments passed into JavaCalls::call

    35 class JNITypes : AllStatic {

    36   // These functions write a java primitive type (in native format)

    37   // to a java stack slot array to be passed as an argument to JavaCalls:calls.

    38   // I.e., they are functionally 'push' operations if they have a 'pos'

    39   // formal parameter.  Note that jlong's and jdouble's are written

    40   // _in reverse_ of the order in which they appear in the interpreter

    41   // stack.  This is because call stubs (see stubGenerator_zero.cpp)

    42   // reverse the argument list constructed by JavaCallArguments (see

    43   // javaCalls.hpp).

    45 private:

    46   // Helper routines.

    47   static inline void    put_int2 (jint *from, jint *to)           { to[0] = from[0]; to[1] = from[1]; }

    48   static inline void    put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }

    49   static inline void    put_int2r(jint *from, jint *to)           { to[0] = from[1]; to[1] = from[0]; }

    50   static inline void    put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }

    52 public:

    53   // Ints are stored in native format in one JavaCallArgument slot at *to.

    54   static inline void    put_int(jint  from, intptr_t *to)               { *(jint *)(to +   0  ) =  from; }

    55   static inline void    put_int(jint  from, intptr_t *to, int& pos)     { *(jint *)(to + pos++) =  from; }

    56   static inline void    put_int(jint *from, intptr_t *to, int& pos)     { *(jint *)(to + pos++) = *from; }

    58 #ifdef _LP64

    59   // Longs are stored in native format in one JavaCallArgument slot at *(to+1).

    60   static inline void    put_long(jlong  from, intptr_t *to)             { *(jlong *)(to + 1 +   0) =  from; }

    61   static inline void    put_long(jlong  from, intptr_t *to, int& pos)   { *(jlong *)(to + 1 + pos) =  from; pos += 2; }

    62   static inline void    put_long(jlong *from, intptr_t *to, int& pos)   { *(jlong *)(to + 1 + pos) = *from; pos += 2; }

    63 #else

    64   // Longs are stored in reversed native word format in two JavaCallArgument slots at *to.

    65   // The high half is in *(to+1) and the low half in *to.

    66   static inline void    put_long(jlong  from, intptr_t *to)            { put_int2r((jint *)&from, (jint *)to); }

    67   static inline void    put_long(jlong  from, intptr_t *to, int& pos)  { put_int2r((jint *)&from, (jint *)to, pos); }

    68   static inline void    put_long(jlong *from, intptr_t *to, int& pos)  { put_int2r((jint *) from, (jint *)to, pos); }

    69 #endif

    71   // Oops are stored in native format in one JavaCallArgument slot at *to.

    72   static inline void    put_obj(oop  from, intptr_t *to)                { *(oop *)(to +   0  ) =  from; }

    73   static inline void    put_obj(oop  from, intptr_t *to, int& pos)      { *(oop *)(to + pos++) =  from; }

    74   static inline void    put_obj(oop *from, intptr_t *to, int& pos)      { *(oop *)(to + pos++) = *from; }

    76   // Floats are stored in native format in one JavaCallArgument slot at *to.

    77   static inline void    put_float(jfloat  from, intptr_t *to)           { *(jfloat *)(to +   0  ) =  from; }

    78   static inline void    put_float(jfloat  from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) =  from; }

    79   static inline void    put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }

    81 #ifdef _LP64

    82   // Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).

    83   static inline void    put_double(jdouble  from, intptr_t *to)           { *(jdouble *)(to + 1 +   0) =  from; }

    84   static inline void    put_double(jdouble  from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) =  from; pos += 2; }

    85   static inline void    put_double(jdouble *from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = *from; pos += 2; }

    86 #else

    87   // Doubles are stored in reversed native word format in two JavaCallArgument slots at *to.

    88   static inline void    put_double(jdouble  from, intptr_t *to)           { put_int2r((jint *)&from, (jint *)to); }

    89   static inline void    put_double(jdouble  from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }

    90   static inline void    put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }

    91 #endif

    93   // The get_xxx routines, on the other hand, actually _do_ fetch

    94   // java primitive types from the interpreter stack.

    95   static inline jint    get_int(intptr_t *from)         { return *(jint *)from; }

    97 #ifdef _LP64

    98   static inline jlong   get_long(intptr_t *from)        { return *(jlong *)from; }

    99 #else

   100   static inline jlong   get_long(intptr_t *from)        { return ((jlong)(*(  signed int *)((jint *)from    )) << 32) |

   101                                                                  ((jlong)(*(unsigned int *)((jint *)from + 1)) <<  0); }

   102 #endif

   104   static inline oop     get_obj(intptr_t *from)         { return *(oop *)from; }

   105   static inline jfloat  get_float(intptr_t *from)       { return *(jfloat *)from; }

   107 #ifdef _LP64

   108   static inline jdouble get_double(intptr_t *from)      { return *(jdouble *)from; }

   109 #else

   110   static inline jdouble get_double(intptr_t *from)      { jlong jl = ((jlong)(*(  signed int *)((jint *)from    )) << 32) |

   111                                                                      ((jlong)(*(unsigned int *)((jint *)from + 1)) <<  0);

   112                                                           return *(jdouble *)&jl; }

   113 #endif

   115 };

   117 #endif // CPU_ZERO_VM_JNITYPES_ZERO_HPP

src/cpu/zero/vm/jniTypes_zero.hpp@f90c822e73f8