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annotate src/cpu/ppc/vm/jniTypes_ppc.hpp @ 14408:ec28f9c041ff

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8019972: PPC64 (part 9): platform files for interpreter only VM. Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs. Reviewed-by: kvn
author goetz
date Fri, 02 Aug 2013 16:46:45 +0200
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14408
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1 /*
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2 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2012, 2013 SAP AG. All rights reserved.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #ifndef CPU_PPC_VM_JNITYPES_PPC_HPP
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27 #define CPU_PPC_VM_JNITYPES_PPC_HPP
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28
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29 #include "memory/allocation.hpp"
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30 #include "oops/oop.hpp"
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31 #include "prims/jni.h"
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32
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33 // This file holds platform-dependent routines used to write primitive
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34 // jni types to the array of arguments passed into JavaCalls::call.
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35
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36 class JNITypes : AllStatic {
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37 // These functions write a java primitive type (in native format) to
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38 // a java stack slot array to be passed as an argument to
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39 // JavaCalls:calls. I.e., they are functionally 'push' operations
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40 // if they have a 'pos' formal parameter. Note that jlong's and
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41 // jdouble's are written _in reverse_ of the order in which they
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42 // appear in the interpreter stack. This is because call stubs (see
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43 // stubGenerator_sparc.cpp) reverse the argument list constructed by
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44 // JavaCallArguments (see javaCalls.hpp).
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45
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46 private:
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47
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48 #ifndef PPC64
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49 #error "ppc32 support currently not implemented!!!"
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50 #endif // PPC64
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51
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52 public:
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53 // Ints are stored in native format in one JavaCallArgument slot at *to.
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54 static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
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55 static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
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56 static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
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57
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58 // Longs are stored in native format in one JavaCallArgument slot at
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59 // *(to+1).
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60 static inline void put_long(jlong from, intptr_t *to) {
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61 *(jlong*) (to + 1) = from;
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62 }
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63
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64 static inline void put_long(jlong from, intptr_t *to, int& pos) {
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65 *(jlong*) (to + 1 + pos) = from;
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66 pos += 2;
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67 }
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68
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69 static inline void put_long(jlong *from, intptr_t *to, int& pos) {
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70 *(jlong*) (to + 1 + pos) = *from;
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71 pos += 2;
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72 }
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73
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74 // Oops are stored in native format in one JavaCallArgument slot at *to.
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75 static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
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76 static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
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77 static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
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78
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79 // Floats are stored in native format in one JavaCallArgument slot at *to.
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80 static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
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81 static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
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82 static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
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83
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84 // Doubles are stored in native word format in one JavaCallArgument
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85 // slot at *(to+1).
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86 static inline void put_double(jdouble from, intptr_t *to) {
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87 *(jdouble*) (to + 1) = from;
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88 }
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89
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90 static inline void put_double(jdouble from, intptr_t *to, int& pos) {
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91 *(jdouble*) (to + 1 + pos) = from;
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92 pos += 2;
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93 }
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94
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95 static inline void put_double(jdouble *from, intptr_t *to, int& pos) {
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96 *(jdouble*) (to + 1 + pos) = *from;
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97 pos += 2;
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98 }
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99
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100 // The get_xxx routines, on the other hand, actually _do_ fetch
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101 // java primitive types from the interpreter stack.
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102 // No need to worry about alignment on Intel.
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103 static inline jint get_int (intptr_t *from) { return *(jint *) from; }
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104 static inline jlong get_long (intptr_t *from) { return *(jlong *) (from + 1); }
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105 static inline oop get_obj (intptr_t *from) { return *(oop *) from; }
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106 static inline jfloat get_float (intptr_t *from) { return *(jfloat *) from; }
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107 static inline jdouble get_double(intptr_t *from) { return *(jdouble *)(from + 1); }
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108 };
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109
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110 #endif // CPU_PPC_VM_JNITYPES_PPC_HPP