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comparison src/cpu/sparc/vm/jniTypes_sparc.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
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_sparc.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 };