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
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.
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]
23 * Copyright (c) 1997-1999 by Sun Microsystems, Inc.
24 * All rights reserved.
27 #pragma ident "%Z%%M% %I% %E% SMI"
39 #include <sys/types.h>
46 #include <sys/machelf.h>
51 #include <sys/ksyms.h>
53 #include <sys/cpuvar.h>
55 typedef struct syment {
61 static syment_t *symbol_table;
62 static int nsyms, maxsyms;
63 static char maxsymname[64];
67 #define elf_getshdr elf64_getshdr
69 #define elf_getshdr elf32_getshdr
74 add_symbol(char *name, uintptr_t addr, size_t size)
78 if (nsyms >= maxsyms) {
80 symbol_table = realloc(symbol_table, maxsyms * sizeof (*sep));
81 if (symbol_table == NULL) {
82 (void) fprintf(stderr, "can't allocate symbol table\n");
86 sep = &symbol_table[nsyms++];
94 remove_symbol(uintptr_t addr)
97 syment_t *sep = symbol_table;
99 for (i = 0; i < nsyms; i++, sep++)
100 if (sep->addr == addr)
106 fake_up_certain_popular_kernel_symbols(void)
112 if ((kc = kstat_open()) == NULL)
115 for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
116 if (strcmp(ksp->ks_module, "cpu_info") == 0) {
117 if ((name = malloc(20)) == NULL)
120 * For consistency, keep cpu[0] and toss cpu0
121 * or any other such symbols.
123 if (ksp->ks_instance == 0)
124 remove_symbol((uintptr_t)ksp->ks_private);
125 (void) sprintf(name, "cpu[%d]", ksp->ks_instance);
126 add_symbol(name, (uintptr_t)ksp->ks_private,
127 sizeof (struct cpu));
130 (void) kstat_close(kc);
134 fake_up_certain_popular_kernel_symbols(void)
140 /* Good for up to 256 CPUs */
141 for(i=0; i < 256; i++) {
142 if ((name = malloc(20)) == NULL)
144 (void) sprintf(name, "cpu[%d]", i);
145 addr = 0x01000000 + (i << 16);
146 add_symbol(name, addr, sizeof (uintptr_t));
152 symcmp(const void *p1, const void *p2)
154 uintptr_t a1 = ((syment_t *)p1)->addr;
155 uintptr_t a2 = ((syment_t *)p2)->addr;
169 Sym *symtab, *symp, *lastsym;
180 if ((fd = open("/dev/ksyms", O_RDONLY)) == -1)
184 (void) elf_version(EV_CURRENT);
186 elf = elf_begin(fd, ELF_C_READ, NULL);
189 * XXX - libelf needs to be fixed so it will work with
190 * non 'ordinary' files like /dev/ksyms. The following
191 * is a work around for now.
193 if (elf_version(EV_CURRENT) == EV_NONE) {
197 if (ioctl(fd, KIOCGSIZE, &sz) < 0) {
201 if (ioctl(fd, KIOCGADDR, &ksyms) < 0) {
205 if ((elf = elf_memory(ksyms, sz)) == NULL) {
211 for (cnt = 1; (scn = elf_nextscn(elf, scn)) != NULL; cnt++) {
212 Shdr *shdr = elf_getshdr(scn);
213 if (shdr->sh_type == SHT_SYMTAB) {
214 symtab = (Sym *)elf_getdata(scn, NULL)->d_buf;
215 nsyms = shdr->sh_size / shdr->sh_entsize;
216 strindex = shdr->sh_link;
220 for (cnt = 1; (scn = elf_nextscn(elf, scn)) != NULL; cnt++) {
222 strtab = (char *)elf_getdata(scn, NULL)->d_buf;
225 lastsym = symtab + nsyms;
227 for (symp = symtab; symp < lastsym; symp++)
228 if ((uint_t)ELF32_ST_TYPE(symp->st_info) <= STT_FUNC &&
230 add_symbol(symp->st_name + strtab,
231 (uintptr_t)symp->st_value, (size_t)symp->st_size);
233 fake_up_certain_popular_kernel_symbols();
234 (void) sprintf(maxsymname, "0x%lx", ULONG_MAX);
235 add_symbol(maxsymname, ULONG_MAX, 1);
237 qsort(symbol_table, nsyms, sizeof (syment_t), symcmp);
240 * Destroy all duplicate symbols, then sort it again.
242 for (i = 0; i < nsyms - 1; i++)
243 if (symbol_table[i].addr == symbol_table[i + 1].addr)
244 symbol_table[i].addr = 0;
246 qsort(symbol_table, nsyms, sizeof (syment_t), symcmp);
248 while (symbol_table[1].addr == 0) {
252 symbol_table[0].name = "(usermode)";
253 symbol_table[0].addr = 0;
254 symbol_table[0].size = 1;
261 addr_to_sym(uintptr_t addr, uintptr_t *offset, size_t *sizep)
268 while (hi - lo > 1) {
270 if (addr >= symbol_table[mid].addr) {
276 sep = &symbol_table[lo];
277 *offset = addr - sep->addr;
283 sym_to_addr(char *name)
286 syment_t *sep = symbol_table;
288 for (i = 0; i < nsyms; i++) {
289 if (strcmp(name, sep->name) == 0)
300 syment_t *sep = symbol_table;
302 for (i = 0; i < nsyms; i++) {
303 if (strcmp(name, sep->name) == 0)