aboutsummaryrefslogtreecommitdiff
path: root/sys/cddl/contrib/opensolaris/uts/common/sys/ctf_api.h
blob: b810f07eabf27eab525ea55e5db8a8fde54178ea (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * This header file defines the interfaces available from the CTF debugger
 * library, libctf, and an equivalent kernel module.  This API can be used by
 * a debugger to operate on data in the Compact ANSI-C Type Format (CTF).
 * This is NOT a public interface, although it may eventually become one in
 * the fullness of time after we gain more experience with the interfaces.
 *
 * In the meantime, be aware that any program linked with this API in this
 * release of Solaris is almost guaranteed to break in the next release.
 *
 * In short, do not user this header file or the CTF routines for any purpose.
 */

#ifndef	_CTF_API_H
#define	_CTF_API_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <sys/types.h>
#include <sys/param.h>
#include <sys/elf.h>
#include <sys/ctf.h>

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * Clients can open one or more CTF containers and obtain a pointer to an
 * opaque ctf_file_t.  Types are identified by an opaque ctf_id_t token.
 * These opaque definitions allow libctf to evolve without breaking clients.
 */
typedef struct ctf_file ctf_file_t;
typedef long ctf_id_t;

/*
 * If the debugger needs to provide the CTF library with a set of raw buffers
 * for use as the CTF data, symbol table, and string table, it can do so by
 * filling in ctf_sect_t structures and passing them to ctf_bufopen():
 */
typedef struct ctf_sect {
	const char *cts_name;	/* section name (if any) */
	ulong_t cts_type;	/* section type (ELF SHT_... value) */
	ulong_t cts_flags;	/* section flags (ELF SHF_... value) */
#if defined(sun)
	const void *cts_data;	/* pointer to section data */
#else
	void *cts_data;		/* pointer to section data */
#endif
	size_t cts_size;	/* size of data in bytes */
	size_t cts_entsize;	/* size of each section entry (symtab only) */
	off64_t cts_offset;	/* file offset of this section (if any) */
} ctf_sect_t;

/*
 * Encoding information for integers, floating-point values, and certain other
 * intrinsics can be obtained by calling ctf_type_encoding(), below.  The flags
 * field will contain values appropriate for the type defined in <sys/ctf.h>.
 */
typedef struct ctf_encoding {
	uint_t cte_format;	/* data format (CTF_INT_* or CTF_FP_* flags) */
	uint_t cte_offset;	/* offset of value in bits */
	uint_t cte_bits;	/* size of storage in bits */
} ctf_encoding_t;

typedef struct ctf_membinfo {
	ctf_id_t ctm_type;	/* type of struct or union member */
	ulong_t ctm_offset;	/* offset of member in bits */
} ctf_membinfo_t;

typedef struct ctf_arinfo {
	ctf_id_t ctr_contents;	/* type of array contents */
	ctf_id_t ctr_index;	/* type of array index */
	uint_t ctr_nelems;	/* number of elements */
} ctf_arinfo_t;

typedef struct ctf_funcinfo {
	ctf_id_t ctc_return;	/* function return type */
	uint_t ctc_argc;	/* number of typed arguments to function */
	uint_t ctc_flags;	/* function attributes (see below) */
} ctf_funcinfo_t;

typedef struct ctf_lblinfo {
	ctf_id_t ctb_typeidx;	/* last type associated with the label */
} ctf_lblinfo_t;

#define	CTF_FUNC_VARARG	0x1	/* function arguments end with varargs */

/*
 * Functions that return integer status or a ctf_id_t use the following value
 * to indicate failure.  ctf_errno() can be used to obtain an error code.
 */
#define	CTF_ERR	(-1L)

/*
 * The CTF data model is inferred to be the caller's data model or the data
 * model of the given object, unless ctf_setmodel() is explicitly called.
 */
#define	CTF_MODEL_ILP32	1	/* object data model is ILP32 */
#define	CTF_MODEL_LP64	2	/* object data model is LP64 */
#ifdef _LP64
#define	CTF_MODEL_NATIVE	CTF_MODEL_LP64
#else
#define	CTF_MODEL_NATIVE	CTF_MODEL_ILP32
#endif

/*
 * Dynamic CTF containers can be created using ctf_create().  The ctf_add_*
 * routines can be used to add new definitions to the dynamic container.
 * New types are labeled as root or non-root to determine whether they are
 * visible at the top-level program scope when subsequently doing a lookup.
 */
#define	CTF_ADD_NONROOT	0	/* type only visible in nested scope */
#define	CTF_ADD_ROOT	1	/* type visible at top-level scope */

/*
 * These typedefs are used to define the signature for callback functions
 * that can be used with the iteration and visit functions below:
 */
typedef int ctf_visit_f(const char *, ctf_id_t, ulong_t, int, void *);
typedef int ctf_member_f(const char *, ctf_id_t, ulong_t, void *);
typedef int ctf_enum_f(const char *, int, void *);
typedef int ctf_type_f(ctf_id_t, void *);
typedef int ctf_label_f(const char *, const ctf_lblinfo_t *, void *);

extern ctf_file_t *ctf_bufopen(const ctf_sect_t *, const ctf_sect_t *,
    const ctf_sect_t *, int *);
extern ctf_file_t *ctf_fdopen(int, int *);
extern ctf_file_t *ctf_open(const char *, int *);
extern ctf_file_t *ctf_create(int *);
extern void ctf_close(ctf_file_t *);

extern ctf_file_t *ctf_parent_file(ctf_file_t *);
extern const char *ctf_parent_name(ctf_file_t *);

extern int ctf_import(ctf_file_t *, ctf_file_t *);
extern int ctf_setmodel(ctf_file_t *, int);
extern int ctf_getmodel(ctf_file_t *);

extern void ctf_setspecific(ctf_file_t *, void *);
extern void *ctf_getspecific(ctf_file_t *);

extern int ctf_errno(ctf_file_t *);
extern const char *ctf_errmsg(int);
extern int ctf_version(int);

extern int ctf_func_info(ctf_file_t *, ulong_t, ctf_funcinfo_t *);
extern int ctf_func_args(ctf_file_t *, ulong_t, uint_t, ctf_id_t *);

extern ctf_id_t ctf_lookup_by_name(ctf_file_t *, const char *);
extern ctf_id_t ctf_lookup_by_symbol(ctf_file_t *, ulong_t);

extern ctf_id_t ctf_type_resolve(ctf_file_t *, ctf_id_t);
extern ssize_t ctf_type_lname(ctf_file_t *, ctf_id_t, char *, size_t);
extern char *ctf_type_name(ctf_file_t *, ctf_id_t, char *, size_t);
extern ssize_t ctf_type_size(ctf_file_t *, ctf_id_t);
extern ssize_t ctf_type_align(ctf_file_t *, ctf_id_t);
extern int ctf_type_kind(ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_type_reference(ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_type_pointer(ctf_file_t *, ctf_id_t);
extern int ctf_type_encoding(ctf_file_t *, ctf_id_t, ctf_encoding_t *);
extern int ctf_type_visit(ctf_file_t *, ctf_id_t, ctf_visit_f *, void *);
extern int ctf_type_cmp(ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);
extern int ctf_type_compat(ctf_file_t *, ctf_id_t, ctf_file_t *, ctf_id_t);

extern int ctf_member_info(ctf_file_t *, ctf_id_t, const char *,
    ctf_membinfo_t *);
extern int ctf_array_info(ctf_file_t *, ctf_id_t, ctf_arinfo_t *);

extern const char *ctf_enum_name(ctf_file_t *, ctf_id_t, int);
extern int ctf_enum_value(ctf_file_t *, ctf_id_t, const char *, int *);

extern const char *ctf_label_topmost(ctf_file_t *);
extern int ctf_label_info(ctf_file_t *, const char *, ctf_lblinfo_t *);

extern int ctf_member_iter(ctf_file_t *, ctf_id_t, ctf_member_f *, void *);
extern int ctf_enum_iter(ctf_file_t *, ctf_id_t, ctf_enum_f *, void *);
extern int ctf_type_iter(ctf_file_t *, ctf_type_f *, void *);
extern int ctf_label_iter(ctf_file_t *, ctf_label_f *, void *);

extern ctf_id_t ctf_add_array(ctf_file_t *, uint_t, const ctf_arinfo_t *);
extern ctf_id_t ctf_add_const(ctf_file_t *, uint_t, ctf_id_t);
extern ctf_id_t ctf_add_enum(ctf_file_t *, uint_t, const char *);
extern ctf_id_t ctf_add_float(ctf_file_t *, uint_t,
    const char *, const ctf_encoding_t *);
extern ctf_id_t ctf_add_forward(ctf_file_t *, uint_t, const char *, uint_t);
extern ctf_id_t ctf_add_function(ctf_file_t *, uint_t,
    const ctf_funcinfo_t *, const ctf_id_t *);
extern ctf_id_t ctf_add_integer(ctf_file_t *, uint_t,
    const char *, const ctf_encoding_t *);
extern ctf_id_t ctf_add_pointer(ctf_file_t *, uint_t, ctf_id_t);
extern ctf_id_t ctf_add_type(ctf_file_t *, ctf_file_t *, ctf_id_t);
extern ctf_id_t ctf_add_typedef(ctf_file_t *, uint_t, const char *, ctf_id_t);
extern ctf_id_t ctf_add_restrict(ctf_file_t *, uint_t, ctf_id_t);
extern ctf_id_t ctf_add_struct(ctf_file_t *, uint_t, const char *);
extern ctf_id_t ctf_add_union(ctf_file_t *, uint_t, const char *);
extern ctf_id_t ctf_add_volatile(ctf_file_t *, uint_t, ctf_id_t);

extern int ctf_add_enumerator(ctf_file_t *, ctf_id_t, const char *, int);
extern int ctf_add_member(ctf_file_t *, ctf_id_t, const char *, ctf_id_t);

extern int ctf_set_array(ctf_file_t *, ctf_id_t, const ctf_arinfo_t *);

extern int ctf_update(ctf_file_t *);
extern int ctf_discard(ctf_file_t *);
extern int ctf_write(ctf_file_t *, int);

#ifdef _KERNEL

struct module;
extern ctf_file_t *ctf_modopen(struct module *, int *);

#endif

#ifdef	__cplusplus
}
#endif

#endif	/* _CTF_API_H */