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 * Copyright 2017 RackTop Systems. 26 */ 27 /* 28 * Copyright (c) 2017 Joyent, Inc. 29 */ 30 31 #ifndef _SYS_KOBJ_H 32 #define _SYS_KOBJ_H 33 34 #include <sys/modctl.h> 35 #include <sys/elf.h> 36 #include <sys/machelf.h> 37 #include <sys/vmem.h> 38 #include <sys/sdt.h> 39 #include <sys/bootstat.h> 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 /* 46 * List of modules maintained by kobj.c 47 */ 48 struct module_list { 49 struct module_list *next; 50 struct module *mp; 51 }; 52 53 typedef struct hotinline_desc { 54 char *hid_symname; /* symbol name */ 55 uintptr_t hid_instr_offset; /* offset of call in text */ 56 struct hotinline_desc *hid_next; /* next hotinline */ 57 } hotinline_desc_t; 58 59 typedef unsigned short symid_t; /* symbol table index */ 60 typedef unsigned char *reloc_dest_t; 61 62 typedef void module_mach; 63 64 struct module { 65 int total_allocated; 66 67 Ehdr hdr; 68 char *shdrs; 69 Shdr *symhdr, *strhdr; 70 71 char *depends_on; 72 73 size_t symsize; 74 char *symspace; /* symbols + strings + hashtbl, or NULL */ 75 int flags; 76 77 size_t text_size; 78 size_t data_size; 79 char *text; 80 char *data; 81 82 unsigned int symtbl_section; 83 /* pointers into symspace, or NULL */ 84 char *symtbl; 85 char *strings; 86 87 unsigned int hashsize; 88 symid_t *buckets; 89 symid_t *chains; 90 91 unsigned int nsyms; 92 93 unsigned int bss_align; 94 size_t bss_size; 95 uintptr_t bss; 96 97 char *filename; 98 99 struct module_list *head, *tail; 100 reloc_dest_t destination; 101 module_mach * machdata; 102 char *ctfdata; 103 size_t ctfsize; 104 105 char *fbt_tab; 106 size_t fbt_size; 107 size_t fbt_nentries; 108 caddr_t textwin; 109 caddr_t textwin_base; 110 111 hotinline_desc_t *hi_calls; 112 113 sdt_probedesc_t *sdt_probes; 114 size_t sdt_nprobes; 115 char *sdt_tab; 116 size_t sdt_size; 117 118 char *sigdata; 119 size_t sigsize; 120 }; 121 122 struct kobj_mem { 123 struct kobj_mem *km_next; 124 struct kobj_mem *km_prev; 125 uintptr_t km_addr; 126 size_t km_size; 127 uintptr_t km_alloc_addr; 128 size_t km_alloc_size; 129 }; 130 131 struct _buf { 132 intptr_t _fd; 133 char *_ptr; 134 char *_base; 135 char *_name; 136 char *_dbuf; 137 int _size; 138 int _cnt; 139 int _off; 140 int _ln; 141 int _bsize; 142 int _iscmp; 143 int _dsize; 144 }; 145 146 147 /* 148 * Statistical info. 149 */ 150 typedef struct { 151 int nalloc; 152 int nfree; 153 int nalloc_calls; 154 int nfree_calls; 155 } kobj_stat_t; 156 157 #define kobj_filename(p) ((p)->_name) 158 #define kobj_linenum(p) ((p)->_ln) 159 #define kobj_newline(p) ((p)->_ln++) 160 #define kobj_getc(p) (--(p)->_cnt >= 0 ? ((int)*(p)->_ptr++):kobj_filbuf(p)) 161 #define kobj_ungetc(p) (++(p)->_cnt > (p)->_size ? -1 : ((int)*(--(p)->_ptr))) 162 #define kobj_comphdr(p) ((struct comphdr *)(p)->_dbuf) 163 164 /* Offset into buffer */ 165 #define B_OFFSET(file, off) (off % (file)->_bsize) 166 167 /* Start of page */ 168 #define F_PAGE(file, off) (off - B_OFFSET(file, off)) 169 170 #define F_BLKS(file, size) ((size / (file)->_bsize) * (file)->_bsize) 171 172 #if defined(_KERNEL) || defined(_FAKE_KERNEL) 173 174 extern int kobj_load_module(struct modctl *, int); 175 extern void kobj_unload_module(struct modctl *); 176 extern uintptr_t kobj_lookup(struct module *, const char *); 177 extern Sym *kobj_lookup_all(struct module *, char *, int); 178 extern int kobj_addrcheck(void *, caddr_t); 179 extern int kobj_module_to_id(void *); 180 extern void kobj_getmodinfo(void *, struct modinfo *); 181 extern int kobj_get_needed(void *, short *, int); 182 extern uintptr_t kobj_getsymvalue(char *, int); 183 extern char *kobj_getsymname(uintptr_t, ulong_t *); 184 extern char *kobj_searchsym(struct module *, uintptr_t, ulong_t *); 185 186 extern int kobj_fstat(intptr_t, struct bootstat *); 187 extern intptr_t kobj_open(char *); 188 extern int kobj_path_exists(char *, int); 189 extern struct _buf *kobj_open_path(char *, int, int); 190 extern int kobj_read(intptr_t, char *, unsigned int, unsigned int); 191 extern void kobj_close(intptr_t); 192 extern void *kobj_alloc(size_t, int); 193 extern void *kobj_zalloc(size_t, int); 194 extern void kobj_free(void *, size_t); 195 extern struct _buf *kobj_open_file(char *); 196 extern void kobj_close_file(struct _buf *); 197 extern int kobj_read_file(struct _buf *, char *, unsigned, unsigned); 198 extern int kobj_get_filesize(struct _buf *, uint64_t *size); 199 extern uintptr_t kobj_getelfsym(char *, void *, int *); 200 extern void kobj_set_ctf(struct module *, caddr_t data, size_t size); 201 extern void do_hotinlines(struct module *); 202 203 extern int kobj_filbuf(struct _buf *); 204 extern void kobj_sync(void); 205 #if defined(__i386) || defined(__sparc) || defined(__amd64) 206 extern void kobj_vmem_init(vmem_t **, vmem_t **); 207 #else 208 #error "ISA not supported" 209 #endif 210 extern caddr_t kobj_text_alloc(vmem_t *, size_t); 211 extern caddr_t kobj_texthole_alloc(caddr_t, size_t); 212 extern void kobj_texthole_free(caddr_t, size_t); 213 extern void kobj_stat_get(kobj_stat_t *); 214 extern void kobj_textwin_alloc(struct module *); 215 extern void kobj_textwin_free(struct module *); 216 217 #endif /* defined(_KERNEL) || defined(_FAKE_KERNEL) */ 218 219 #ifdef __cplusplus 220 } 221 #endif 222 223 #endif /* !_SYS_KOBJ_H */ 224