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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 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_KOBJ_H 28 #define _SYS_KOBJ_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/modctl.h> 33 #include <sys/elf.h> 34 #include <sys/machelf.h> 35 #include <sys/vmem.h> 36 #include <sys/sdt.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 int _size; 126 int _cnt; 127 int _off; 128 int _ln; 129 }; 130 131 132 /* 133 * Statistical info. 134 */ 135 typedef struct { 136 int nalloc; 137 int nfree; 138 int nalloc_calls; 139 int nfree_calls; 140 } kobj_stat_t; 141 142 #define kobj_filename(p) ((p)->_name) 143 #define kobj_linenum(p) ((p)->_ln) 144 #define kobj_newline(p) ((p)->_ln++) 145 #define kobj_getc(p) (--(p)->_cnt >= 0 ? ((int)*(p)->_ptr++):kobj_filbuf(p)) 146 #define kobj_ungetc(p) (++(p)->_cnt > (p)->_size ? -1 : ((int)*(--(p)->_ptr))) 147 148 #define B_OFFSET(f_offset) (f_offset & (MAXBSIZE-1)) /* Offset into buffer */ 149 #define F_PAGE(f_offset) (f_offset & ~(MAXBSIZE-1)) /* Start of page */ 150 151 #if defined(_KERNEL) 152 153 extern int kobj_load_module(struct modctl *, int); 154 extern void kobj_unload_module(struct modctl *); 155 extern uintptr_t kobj_lookup(void *, char *); 156 extern Sym *kobj_lookup_all(struct module *, char *, int); 157 extern int kobj_addrcheck(void *, caddr_t); 158 extern int kobj_module_to_id(void *); 159 extern void kobj_getmodinfo(void *, struct modinfo *); 160 extern int kobj_get_needed(void *, short *, int); 161 extern uintptr_t kobj_getsymvalue(char *, int); 162 extern char *kobj_getsymname(uintptr_t, ulong_t *); 163 extern char *kobj_searchsym(struct module *, uintptr_t, ulong_t *); 164 165 extern intptr_t kobj_open(char *); 166 extern int kobj_path_exists(char *, int); 167 extern struct _buf *kobj_open_path(char *, int, int); 168 extern int kobj_read(intptr_t, char *, unsigned int, unsigned int); 169 extern void kobj_close(intptr_t); 170 extern void *kobj_alloc(size_t, int); 171 extern void *kobj_zalloc(size_t, int); 172 extern void kobj_free(void *, size_t); 173 extern struct _buf *kobj_open_file(char *); 174 extern void kobj_close_file(struct _buf *); 175 extern int kobj_read_file(struct _buf *, char *, unsigned, unsigned); 176 extern uintptr_t kobj_getelfsym(char *, void *, int *); 177 extern void kobj_set_ctf(struct module *, caddr_t data, size_t size); 178 179 extern int kobj_filbuf(struct _buf *); 180 extern void kobj_sync(void); 181 #if defined(__i386) || defined(__sparc) || defined(__amd64) 182 extern void kobj_vmem_init(vmem_t **, vmem_t **); 183 #else 184 #error "ISA not supported" 185 #endif 186 extern caddr_t kobj_text_alloc(vmem_t *, size_t); 187 extern caddr_t kobj_texthole_alloc(caddr_t, size_t); 188 extern void kobj_texthole_free(caddr_t, size_t); 189 extern void kobj_stat_get(kobj_stat_t *); 190 extern void kobj_textwin_alloc(struct module *); 191 extern void kobj_textwin_free(struct module *); 192 193 #endif /* defined(_KERNEL) */ 194 195 #ifdef __cplusplus 196 } 197 #endif 198 199 #endif /* !_SYS_KOBJ_H */ 200