1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #ifndef _SYS_KOBJ_H
27 #define _SYS_KOBJ_H
28
29 #pragma ident "%Z%%M% %I% %E% SMI"
30
31 #include <sys/modctl.h>
32 #include <sys/elf.h>
33 #include <sys/machelf.h>
34 #include <sys/vmem.h>
35 #include <sys/sdt.h>
36 #include <sys/bootstat.h>
37
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41
42 /*
43 * List of modules maintained by kobj.c
44 */
45 struct module_list {
46 struct module_list *next;
47 struct module *mp;
48 };
49
50 typedef unsigned short symid_t; /* symbol table index */
51 typedef unsigned char *reloc_dest_t;
52
53 typedef void module_mach;
54
55 struct module {
56 int total_allocated;
57
58 Ehdr hdr;
59 char *shdrs;
60 Shdr *symhdr, *strhdr;
61
62 char *depends_on;
63
64 size_t symsize;
65 char *symspace; /* symbols + strings + hashtbl, or NULL */
66 int flags;
67
68 size_t text_size;
69 size_t data_size;
70 char *text;
71 char *data;
72
73 unsigned int symtbl_section;
74 /* pointers into symspace, or NULL */
75 char *symtbl;
76 char *strings;
77
78 unsigned int hashsize;
79 symid_t *buckets;
80 symid_t *chains;
81
82 unsigned int nsyms;
83
84 unsigned int bss_align;
85 size_t bss_size;
86 uintptr_t bss;
87
88 char *filename;
89
90 struct module_list *head, *tail;
91 reloc_dest_t destination;
92 module_mach * machdata;
93 char *ctfdata;
94 size_t ctfsize;
95
96 char *fbt_tab;
97 size_t fbt_size;
98 size_t fbt_nentries;
99 caddr_t textwin;
100 caddr_t textwin_base;
101
102 sdt_probedesc_t *sdt_probes;
103 size_t sdt_nprobes;
104 char *sdt_tab;
105 size_t sdt_size;
106
107 char *sigdata;
108 size_t sigsize;
109 };
110
111 struct kobj_mem {
112 struct kobj_mem *km_next;
113 struct kobj_mem *km_prev;
114 uintptr_t km_addr;
115 size_t km_size;
116 uintptr_t km_alloc_addr;
117 size_t km_alloc_size;
118 };
119
120 struct _buf {
121 intptr_t _fd;
122 char *_ptr;
123 char *_base;
124 char *_name;
125 char *_dbuf;
126 int _size;
127 int _cnt;
128 int _off;
129 int _ln;
130 int _bsize;
131 int _iscmp;
132 int _dsize;
133 };
134
135
136 /*
137 * Statistical info.
138 */
139 typedef struct {
140 int nalloc;
141 int nfree;
142 int nalloc_calls;
143 int nfree_calls;
144 } kobj_stat_t;
145
146 #define kobj_filename(p) ((p)->_name)
147 #define kobj_linenum(p) ((p)->_ln)
148 #define kobj_newline(p) ((p)->_ln++)
149 #define kobj_getc(p) (--(p)->_cnt >= 0 ? ((int)*(p)->_ptr++):kobj_filbuf(p))
150 #define kobj_ungetc(p) (++(p)->_cnt > (p)->_size ? -1 : ((int)*(--(p)->_ptr)))
151 #define kobj_comphdr(p) ((struct comphdr *)(p)->_dbuf)
152
153 /* Offset into buffer */
154 #define B_OFFSET(file, off) (off % (file)->_bsize)
155
156 /* Start of page */
157 #define F_PAGE(file, off) (off - B_OFFSET(file, off))
158
159 #define F_BLKS(file, size) ((size / (file)->_bsize) * (file)->_bsize)
160
161 #if defined(_KERNEL)
162
163 extern int kobj_load_module(struct modctl *, int);
164 extern void kobj_unload_module(struct modctl *);
165 extern uintptr_t kobj_lookup(struct module *, const char *);
166 extern Sym *kobj_lookup_all(struct module *, char *, int);
167 extern int kobj_addrcheck(void *, caddr_t);
168 extern int kobj_module_to_id(void *);
169 extern void kobj_getmodinfo(void *, struct modinfo *);
170 extern int kobj_get_needed(void *, short *, int);
171 extern uintptr_t kobj_getsymvalue(char *, int);
172 extern char *kobj_getsymname(uintptr_t, ulong_t *);
173 extern char *kobj_searchsym(struct module *, uintptr_t, ulong_t *);
174
175 extern int kobj_fstat(intptr_t, struct bootstat *);
176 extern intptr_t kobj_open(char *);
177 extern int kobj_path_exists(char *, int);
178 extern struct _buf *kobj_open_path(char *, int, int);
179 extern int kobj_read(intptr_t, char *, unsigned int, unsigned int);
180 extern void kobj_close(intptr_t);
181 extern void *kobj_alloc(size_t, int);
182 extern void *kobj_zalloc(size_t, int);
183 extern void kobj_free(void *, size_t);
184 extern struct _buf *kobj_open_file(char *);
185 extern void kobj_close_file(struct _buf *);
186 extern int kobj_read_file(struct _buf *, char *, unsigned, unsigned);
187 extern int kobj_get_filesize(struct _buf *, uint64_t *size);
188 extern uintptr_t kobj_getelfsym(char *, void *, int *);
189 extern void kobj_set_ctf(struct module *, caddr_t data, size_t size);
190
191 extern int kobj_filbuf(struct _buf *);
192 extern void kobj_sync(void);
193 #if defined(__i386) || defined(__sparc) || defined(__amd64)
194 extern void kobj_vmem_init(vmem_t **, vmem_t **);
195 #else
196 #error "ISA not supported"
197 #endif
198 extern caddr_t kobj_text_alloc(vmem_t *, size_t);
199 extern caddr_t kobj_texthole_alloc(caddr_t, size_t);
200 extern void kobj_texthole_free(caddr_t, size_t);
201 extern void kobj_stat_get(kobj_stat_t *);
202 extern void kobj_textwin_alloc(struct module *);
203 extern void kobj_textwin_free(struct module *);
204
205 #endif /* defined(_KERNEL) */
206
207 #ifdef __cplusplus
208 }
209 #endif
210
211 #endif /* !_SYS_KOBJ_H */