1010
|
1 /*
|
|
2 * Copyright 1998-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 // This file holds platform-dependent routines used to write primitive jni
|
|
26 // types to the array of arguments passed into JavaCalls::call
|
|
27
|
|
28 class JNITypes : AllStatic {
|
|
29 // These functions write a java primitive type (in native format)
|
|
30 // to a java stack slot array to be passed as an argument to JavaCalls:calls.
|
|
31 // I.e., they are functionally 'push' operations if they have a 'pos'
|
|
32 // formal parameter. Note that jlong's and jdouble's are written
|
|
33 // _in reverse_ of the order in which they appear in the interpreter
|
|
34 // stack. This is because call stubs (see stubGenerator_zero.cpp)
|
|
35 // reverse the argument list constructed by JavaCallArguments (see
|
|
36 // javaCalls.hpp).
|
|
37
|
|
38 private:
|
|
39 // Helper routines.
|
|
40 static inline void put_int2 (jint *from, jint *to) { to[0] = from[0]; to[1] = from[1]; }
|
|
41 static inline void put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }
|
|
42 static inline void put_int2r(jint *from, jint *to) { to[0] = from[1]; to[1] = from[0]; }
|
|
43 static inline void put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }
|
|
44
|
|
45 public:
|
|
46 // Ints are stored in native format in one JavaCallArgument slot at *to.
|
|
47 static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
|
|
48 static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
|
|
49 static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
|
|
50
|
|
51 #ifdef _LP64
|
|
52 // Longs are stored in native format in one JavaCallArgument slot at *(to+1).
|
|
53 static inline void put_long(jlong from, intptr_t *to) { *(jlong *)(to + 1 + 0) = from; }
|
|
54 static inline void put_long(jlong from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = from; pos += 2; }
|
|
55 static inline void put_long(jlong *from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = *from; pos += 2; }
|
|
56 #else
|
|
57 // Longs are stored in reversed native word format in two JavaCallArgument slots at *to.
|
|
58 // The high half is in *(to+1) and the low half in *to.
|
|
59 static inline void put_long(jlong from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
|
|
60 static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
|
|
61 static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
|
|
62 #endif
|
|
63
|
|
64 // Oops are stored in native format in one JavaCallArgument slot at *to.
|
|
65 static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
|
|
66 static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
|
|
67 static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
|
|
68
|
|
69 // Floats are stored in native format in one JavaCallArgument slot at *to.
|
|
70 static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
|
|
71 static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
|
|
72 static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
|
|
73
|
|
74 #ifdef _LP64
|
|
75 // Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).
|
|
76 static inline void put_double(jdouble from, intptr_t *to) { *(jdouble *)(to + 1 + 0) = from; }
|
|
77 static inline void put_double(jdouble from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = from; pos += 2; }
|
|
78 static inline void put_double(jdouble *from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = *from; pos += 2; }
|
|
79 #else
|
|
80 // Doubles are stored in reversed native word format in two JavaCallArgument slots at *to.
|
|
81 static inline void put_double(jdouble from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
|
|
82 static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
|
|
83 static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
|
|
84 #endif
|
|
85
|
|
86 // The get_xxx routines, on the other hand, actually _do_ fetch
|
|
87 // java primitive types from the interpreter stack.
|
|
88 static inline jint get_int(intptr_t *from) { return *(jint *)from; }
|
|
89
|
|
90 #ifdef _LP64
|
|
91 static inline jlong get_long(intptr_t *from) { return *(jlong *)from; }
|
|
92 #else
|
|
93 static inline jlong get_long(intptr_t *from) { return ((jlong)(*( signed int *)((jint *)from )) << 32) |
|
|
94 ((jlong)(*(unsigned int *)((jint *)from + 1)) << 0); }
|
|
95 #endif
|
|
96
|
|
97 static inline oop get_obj(intptr_t *from) { return *(oop *)from; }
|
|
98 static inline jfloat get_float(intptr_t *from) { return *(jfloat *)from; }
|
|
99
|
|
100 #ifdef _LP64
|
|
101 static inline jdouble get_double(intptr_t *from) { return *(jdouble *)from; }
|
|
102 #else
|
|
103 static inline jdouble get_double(intptr_t *from) { jlong jl = ((jlong)(*( signed int *)((jint *)from )) << 32) |
|
|
104 ((jlong)(*(unsigned int *)((jint *)from + 1)) << 0);
|
|
105 return *(jdouble *)&jl; }
|
|
106 #endif
|
|
107
|
|
108 };
|