10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _SYS_MODEL_H
28 #define _SYS_MODEL_H
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35
36 #if defined(_KERNEL) && !defined(_ASM)
37 #include <sys/debug.h>
38 #endif /* _KERNEL && !_ASM */
39
40 #include <sys/isa_defs.h>
41
42 #if defined(_KERNEL) || defined(_KMEMUSER)
43
44 /*
45 * These bits are used in various places to specify the data model
46 * of the originator (and/or consumer) of data items. See <sys/conf.h>
47 * <sys/file.h>, <sys/stream.h> and <sys/sunddi.h>.
48 *
49 * This state should only be known to the kernel implementation.
50 */
51 #define DATAMODEL_MASK 0x0FF00000
74 */
75 typedef unsigned int model_t;
76
77 #endif /* _ASM */
78
79 #if defined(_KERNEL) && !defined(_ASM)
80 /*
81 * These macros allow two views of the same piece of memory depending
82 * on the originating user-mode program's data model. See the STRUCT_DECL(9F)
83 * man page.
84 */
85 #if defined(_LP64)
86
87 #define STRUCT_HANDLE(struct_type, handle) \
88 struct { \
89 union { \
90 struct struct_type##32 *m32; \
91 struct struct_type *m64; \
92 } ptr; \
93 model_t model; \
94 } handle = { NULL, DATAMODEL_ILP32 }
95
96 #define STRUCT_DECL(struct_type, handle) \
97 struct struct_type __##handle##_buf; \
98 STRUCT_HANDLE(struct_type, handle)
99
100 #define STRUCT_SET_HANDLE(handle, umodel, addr) \
101 (handle).model = (model_t)(umodel) & DATAMODEL_MASK; \
102 ASSERT(((umodel) & DATAMODEL_MASK) != DATAMODEL_NONE); \
103 ((handle).ptr.m64) = (addr)
104
105 #define STRUCT_INIT(handle, umodel) \
106 STRUCT_SET_HANDLE(handle, umodel, &__##handle##_buf)
107
108 #define STRUCT_SIZE(handle) \
109 ((handle).model == DATAMODEL_ILP32 ? \
110 sizeof (*(handle).ptr.m32) : \
111 sizeof (*(handle).ptr.m64))
112
113 /*
114 * In STRUCT_FADDR and STRUCT_FGETP a sleight of hand is employed to make
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10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _SYS_MODEL_H
28 #define _SYS_MODEL_H
29
30
31
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35
36 #if defined(_KERNEL) && !defined(_ASM)
37 #include <sys/debug.h>
38 #endif /* _KERNEL && !_ASM */
39
40 #include <sys/isa_defs.h>
41
42 #if defined(_KERNEL) || defined(_KMEMUSER)
43
44 /*
45 * These bits are used in various places to specify the data model
46 * of the originator (and/or consumer) of data items. See <sys/conf.h>
47 * <sys/file.h>, <sys/stream.h> and <sys/sunddi.h>.
48 *
49 * This state should only be known to the kernel implementation.
50 */
51 #define DATAMODEL_MASK 0x0FF00000
74 */
75 typedef unsigned int model_t;
76
77 #endif /* _ASM */
78
79 #if defined(_KERNEL) && !defined(_ASM)
80 /*
81 * These macros allow two views of the same piece of memory depending
82 * on the originating user-mode program's data model. See the STRUCT_DECL(9F)
83 * man page.
84 */
85 #if defined(_LP64)
86
87 #define STRUCT_HANDLE(struct_type, handle) \
88 struct { \
89 union { \
90 struct struct_type##32 *m32; \
91 struct struct_type *m64; \
92 } ptr; \
93 model_t model; \
94 } handle = { { NULL }, DATAMODEL_ILP32 }
95
96 #define STRUCT_DECL(struct_type, handle) \
97 struct struct_type __##handle##_buf; \
98 STRUCT_HANDLE(struct_type, handle)
99
100 #define STRUCT_SET_HANDLE(handle, umodel, addr) \
101 (handle).model = (model_t)(umodel) & DATAMODEL_MASK; \
102 ASSERT(((umodel) & DATAMODEL_MASK) != DATAMODEL_NONE); \
103 ((handle).ptr.m64) = (addr)
104
105 #define STRUCT_INIT(handle, umodel) \
106 STRUCT_SET_HANDLE(handle, umodel, &__##handle##_buf)
107
108 #define STRUCT_SIZE(handle) \
109 ((handle).model == DATAMODEL_ILP32 ? \
110 sizeof (*(handle).ptr.m32) : \
111 sizeof (*(handle).ptr.m64))
112
113 /*
114 * In STRUCT_FADDR and STRUCT_FGETP a sleight of hand is employed to make
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