1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/x86/vm/jniTypes_x86.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,124 @@
1.4 +/*
1.5 + * Copyright 1998-2003 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// This file holds platform-dependent routines used to write primitive jni
1.29 +// types to the array of arguments passed into JavaCalls::call
1.30 +
1.31 +class JNITypes : AllStatic {
1.32 + // These functions write a java primitive type (in native format)
1.33 + // to a java stack slot array to be passed as an argument to JavaCalls:calls.
1.34 + // I.e., they are functionally 'push' operations if they have a 'pos'
1.35 + // formal parameter. Note that jlong's and jdouble's are written
1.36 + // _in reverse_ of the order in which they appear in the interpreter
1.37 + // stack. This is because call stubs (see stubGenerator_sparc.cpp)
1.38 + // reverse the argument list constructed by JavaCallArguments (see
1.39 + // javaCalls.hpp).
1.40 +
1.41 +private:
1.42 +
1.43 +#ifndef AMD64
1.44 + // 32bit Helper routines.
1.45 + static inline void put_int2r(jint *from, intptr_t *to) { *(jint *)(to++) = from[1];
1.46 + *(jint *)(to ) = from[0]; }
1.47 + static inline void put_int2r(jint *from, intptr_t *to, int& pos) { put_int2r(from, to + pos); pos += 2; }
1.48 +#endif // AMD64
1.49 +
1.50 +public:
1.51 + // Ints are stored in native format in one JavaCallArgument slot at *to.
1.52 + static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
1.53 + static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
1.54 + static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
1.55 +
1.56 +#ifdef AMD64
1.57 + // Longs are stored in native format in one JavaCallArgument slot at
1.58 + // *(to+1).
1.59 + static inline void put_long(jlong from, intptr_t *to) {
1.60 + *(jlong*) (to + 1) = from;
1.61 + }
1.62 +
1.63 + static inline void put_long(jlong from, intptr_t *to, int& pos) {
1.64 + *(jlong*) (to + 1 + pos) = from;
1.65 + pos += 2;
1.66 + }
1.67 +
1.68 + static inline void put_long(jlong *from, intptr_t *to, int& pos) {
1.69 + *(jlong*) (to + 1 + pos) = *from;
1.70 + pos += 2;
1.71 + }
1.72 +#else
1.73 + // Longs are stored in big-endian word format in two JavaCallArgument slots at *to.
1.74 + // The high half is in *to and the low half in *(to+1).
1.75 + static inline void put_long(jlong from, intptr_t *to) { put_int2r((jint *)&from, to); }
1.76 + static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, to, pos); }
1.77 + static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, to, pos); }
1.78 +#endif // AMD64
1.79 +
1.80 + // Oops are stored in native format in one JavaCallArgument slot at *to.
1.81 + static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
1.82 + static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
1.83 + static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
1.84 +
1.85 + // Floats are stored in native format in one JavaCallArgument slot at *to.
1.86 + static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
1.87 + static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
1.88 + static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
1.89 +
1.90 +#undef _JNI_SLOT_OFFSET
1.91 +#ifdef AMD64
1.92 +#define _JNI_SLOT_OFFSET 1
1.93 + // Doubles are stored in native word format in one JavaCallArgument
1.94 + // slot at *(to+1).
1.95 + static inline void put_double(jdouble from, intptr_t *to) {
1.96 + *(jdouble*) (to + 1) = from;
1.97 + }
1.98 +
1.99 + static inline void put_double(jdouble from, intptr_t *to, int& pos) {
1.100 + *(jdouble*) (to + 1 + pos) = from;
1.101 + pos += 2;
1.102 + }
1.103 +
1.104 + static inline void put_double(jdouble *from, intptr_t *to, int& pos) {
1.105 + *(jdouble*) (to + 1 + pos) = *from;
1.106 + pos += 2;
1.107 + }
1.108 +#else
1.109 +#define _JNI_SLOT_OFFSET 0
1.110 + // Doubles are stored in big-endian word format in two JavaCallArgument slots at *to.
1.111 + // The high half is in *to and the low half in *(to+1).
1.112 + static inline void put_double(jdouble from, intptr_t *to) { put_int2r((jint *)&from, to); }
1.113 + static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, to, pos); }
1.114 + static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, to, pos); }
1.115 +#endif // AMD64
1.116 +
1.117 +
1.118 + // The get_xxx routines, on the other hand, actually _do_ fetch
1.119 + // java primitive types from the interpreter stack.
1.120 + // No need to worry about alignment on Intel.
1.121 + static inline jint get_int (intptr_t *from) { return *(jint *) from; }
1.122 + static inline jlong get_long (intptr_t *from) { return *(jlong *) (from + _JNI_SLOT_OFFSET); }
1.123 + static inline oop get_obj (intptr_t *from) { return *(oop *) from; }
1.124 + static inline jfloat get_float (intptr_t *from) { return *(jfloat *) from; }
1.125 + static inline jdouble get_double(intptr_t *from) { return *(jdouble *)(from + _JNI_SLOT_OFFSET); }
1.126 +#undef _JNI_SLOT_OFFSET
1.127 +};
