1 /* 2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_S390_JNITYPES_S390_HPP 27 #define CPU_S390_JNITYPES_S390_HPP 28 29 // This file holds platform-dependent routines used to write primitive 30 // jni types to the array of arguments passed into JavaCalls::call. 31 32 #include "jni.h" 33 #include "memory/allocation.hpp" 34 #include "oops/oop.hpp" 35 36 class JNITypes : AllStatic { 37 // These functions write a java primitive type (in native format) to 38 // a java stack slot array to be passed as an argument to 39 // JavaCalls:calls. I.e., they are functionally 'push' operations 40 // if they have a 'pos' formal parameter. Note that jlongs and 41 // jdoubles are written _in reverse_ of the order in which they 42 // appear in the interpreter stack. This is because call stubs (see 43 // stubGenerator_s390.cpp) reverse the argument list constructed by 44 // JavaCallArguments (see javaCalls.hpp). 45 46 public: 47 // Ints are stored in native format in one JavaCallArgument slot at *to. put_int(jint from,intptr_t * to)48 static inline void put_int(jint from, intptr_t *to) { 49 *(jint*) to = from; 50 } 51 put_int(jint from,intptr_t * to,int & pos)52 static inline void put_int(jint from, intptr_t *to, int& pos) { 53 *(jint*) (to + pos++) = from; 54 } 55 put_int(jint * from,intptr_t * to,int & pos)56 static inline void put_int(jint *from, intptr_t *to, int& pos) { 57 *(jint*) (to + pos++) = *from; 58 } 59 60 // Longs are stored in native format in one JavaCallArgument slot at *(to+1). put_long(jlong from,intptr_t * to)61 static inline void put_long(jlong from, intptr_t *to) { 62 *(jlong*) (to + 1) = from; 63 } 64 put_long(jlong from,intptr_t * to,int & pos)65 static inline void put_long(jlong from, intptr_t *to, int& pos) { 66 *(jlong*) (to + 1 + pos) = from; 67 pos += 2; 68 } 69 put_long(jlong * from,intptr_t * to,int & pos)70 static inline void put_long(jlong *from, intptr_t *to, int& pos) { 71 *(jlong*) (to + 1 + pos) = *from; 72 pos += 2; 73 } 74 75 // Oops are stored in native format in one JavaCallArgument slot at *to. put_obj(const Handle & from_handle,intptr_t * to,int & pos)76 static inline void put_obj(const Handle& from_handle, intptr_t *to, int& pos) { 77 *(to + pos++) = (intptr_t)from_handle.raw_value(); 78 } 79 put_obj(jobject from_handle,intptr_t * to,int & pos)80 static inline void put_obj(jobject from_handle, intptr_t *to, int& pos) { 81 *(to + pos++) = (intptr_t)from_handle; 82 } 83 84 // Floats are stored in native format in one JavaCallArgument slot at *to. put_float(jfloat from,intptr_t * to)85 static inline void put_float(jfloat from, intptr_t *to) { 86 *(jfloat*) to = from; 87 } 88 put_float(jfloat from,intptr_t * to,int & pos)89 static inline void put_float(jfloat from, intptr_t *to, int& pos) { 90 *(jfloat*) (to + pos++) = from; 91 } 92 put_float(jfloat * from,intptr_t * to,int & pos)93 static inline void put_float(jfloat *from, intptr_t *to, int& pos) { 94 *(jfloat*) (to + pos++) = *from; 95 } 96 97 // Doubles are stored in native word format in one JavaCallArgument 98 // slot at *(to+1). put_double(jdouble from,intptr_t * to)99 static inline void put_double(jdouble from, intptr_t *to) { 100 *(jdouble*) (to + 1) = from; 101 } 102 put_double(jdouble from,intptr_t * to,int & pos)103 static inline void put_double(jdouble from, intptr_t *to, int& pos) { 104 *(jdouble*) (to + 1 + pos) = from; 105 pos += 2; 106 } 107 put_double(jdouble * from,intptr_t * to,int & pos)108 static inline void put_double(jdouble *from, intptr_t *to, int& pos) { 109 *(jdouble*) (to + 1 + pos) = *from; 110 pos += 2; 111 } 112 113 // The get_xxx routines, on the other hand, actually _do_ fetch 114 // java primitive types from the interpreter stack. 115 // No need to worry about alignment on z/Architecture. get_int(intptr_t * from)116 static inline jint get_int(intptr_t *from) { 117 return *(jint*) from; 118 } 119 get_long(intptr_t * from)120 static inline jlong get_long(intptr_t *from) { 121 return *(jlong*) (from + 1); 122 } 123 get_obj(intptr_t * from)124 static inline oop get_obj(intptr_t *from) { 125 return *(oop*) from; 126 } 127 get_float(intptr_t * from)128 static inline jfloat get_float(intptr_t *from) { 129 return *(jfloat*) from; 130 } 131 get_double(intptr_t * from)132 static inline jdouble get_double(intptr_t *from) { 133 return *(jdouble*) (from + 1); 134 } 135 }; 136 137 #endif // CPU_S390_JNITYPES_S390_HPP 138