Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/cpu/zero/vm/jniTypes_zero.hpp
src/cpu/zero/vm/jniTypes_zero.hpp
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| 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 */ | |
| 24 | |
| 25 #ifndef CPU_ZERO_VM_JNITYPES_ZERO_HPP | |
| 26 #define CPU_ZERO_VM_JNITYPES_ZERO_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "oops/oop.hpp" | |
| 30 #include "prims/jni.h" | |
| 31 | |
| 32 // This file holds platform-dependent routines used to write primitive jni | |
| 33 // types to the array of arguments passed into JavaCalls::call | |
| 34 | |
| 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). | |
| 44 | |
| 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; } | |
| 51 | |
| 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; } | |
| 57 | |
| 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 | |
| 70 | |
| 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; } | |
| 75 | |
| 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; } | |
| 80 | |
| 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 | |
| 92 | |
| 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; } | |
| 96 | |
| 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 | |
| 103 | |
| 104 static inline oop get_obj(intptr_t *from) { return *(oop *)from; } | |
| 105 static inline jfloat get_float(intptr_t *from) { return *(jfloat *)from; } | |
| 106 | |
| 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 | |
| 114 | |
| 115 }; | |
| 116 | |
| 117 #endif // CPU_ZERO_VM_JNITYPES_ZERO_HPP |
