1501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown/* 2501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Copyright (C) 2011 The Android Open Source Project 3501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 4501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Licensed under the Apache License, Version 2.0 (the "License"); 5501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * you may not use this file except in compliance with the License. 6501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * You may obtain a copy of the License at 7501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 8501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * http://www.apache.org/licenses/LICENSE-2.0 9501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * 10501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * Unless required by applicable law or agreed to in writing, software 11501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * distributed under the License is distributed on an "AS IS" BASIS, 12501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * See the License for the specific language governing permissions and 14501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown * limitations under the License. 15501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown */ 16501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 17501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#define LOG_TAG "Corkscrew" 18501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown//#define LOG_NDEBUG 0 19501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 20501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <corkscrew/symbol_table.h> 21501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 2271363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes#include <stdbool.h> 23501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <stdlib.h> 2471363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes#include <elf.h> 25501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <fcntl.h> 26501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <string.h> 27501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <sys/stat.h> 28501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <sys/mman.h> 29501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown#include <cutils/log.h> 30501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 3171363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughesstatic bool is_elf(Elf32_Ehdr* e) { 3271363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes return (e->e_ident[EI_MAG0] == ELFMAG0 && 3371363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes e->e_ident[EI_MAG1] == ELFMAG1 && 3471363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes e->e_ident[EI_MAG2] == ELFMAG2 && 3571363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes e->e_ident[EI_MAG3] == ELFMAG3); 3671363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes} 3771363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes 38501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown// Compare function for qsort 39501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownstatic int qcompar(const void *a, const void *b) { 40501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown const symbol_t* asym = (const symbol_t*)a; 41501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown const symbol_t* bsym = (const symbol_t*)b; 42501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (asym->start > bsym->start) return 1; 43501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (asym->start < bsym->start) return -1; 44501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return 0; 45501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 46501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 47501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown// Compare function for bsearch 48501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownstatic int bcompar(const void *key, const void *element) { 49501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown uintptr_t addr = *(const uintptr_t*)key; 50501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown const symbol_t* symbol = (const symbol_t*)element; 51501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (addr < symbol->start) return -1; 52501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (addr >= symbol->end) return 1; 53501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return 0; 54501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 55501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 56501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownsymbol_table_t* load_symbol_table(const char *filename) { 57501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown symbol_table_t* table = NULL; 5819b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown ALOGV("Loading symbol table from '%s'.", filename); 59501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 60501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int fd = open(filename, O_RDONLY); 61501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (fd < 0) { 62501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out; 63501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 64501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 65501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown struct stat sb; 66501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (fstat(fd, &sb)) { 67501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_close; 68501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 69501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 70501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown size_t length = sb.st_size; 71501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown char* base = mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0); 72501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (base == MAP_FAILED) { 73501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_close; 74501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 75501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 76501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Parse the file header 77501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown Elf32_Ehdr *hdr = (Elf32_Ehdr*)base; 7871363a8075e7916c2166cbdd8a0bf5a180ed4d54Elliott Hughes if (!is_elf(hdr)) { 79501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_close; 80501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 81501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown Elf32_Shdr *shdr = (Elf32_Shdr*)(base + hdr->e_shoff); 82501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 83501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Search for the dynamic symbols section 84501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int sym_idx = -1; 85501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int dynsym_idx = -1; 86501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (Elf32_Half i = 0; i < hdr->e_shnum; i++) { 87501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (shdr[i].sh_type == SHT_SYMTAB) { 88501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown sym_idx = i; 89501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 90501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (shdr[i].sh_type == SHT_DYNSYM) { 91501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown dynsym_idx = i; 92501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 93501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 94501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsym_idx == -1 && sym_idx == -1) { 95501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_unmap; 96501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 97501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 98501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table = malloc(sizeof(symbol_table_t)); 99501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if(!table) { 100501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_unmap; 101501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 102501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->num_symbols = 0; 103501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 104501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown Elf32_Sym *dynsyms = NULL; 105501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int dynnumsyms = 0; 106501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown char *dynstr = NULL; 107501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsym_idx != -1) { 108501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown dynsyms = (Elf32_Sym*)(base + shdr[dynsym_idx].sh_offset); 109501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown dynnumsyms = shdr[dynsym_idx].sh_size / shdr[dynsym_idx].sh_entsize; 110501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int dynstr_idx = shdr[dynsym_idx].sh_link; 111501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown dynstr = base + shdr[dynstr_idx].sh_offset; 112501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 113501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 114501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown Elf32_Sym *syms = NULL; 115501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int numsyms = 0; 116501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown char *str = NULL; 117501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (sym_idx != -1) { 118501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown syms = (Elf32_Sym*)(base + shdr[sym_idx].sh_offset); 119501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown numsyms = shdr[sym_idx].sh_size / shdr[sym_idx].sh_entsize; 120501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int str_idx = shdr[sym_idx].sh_link; 121501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown str = base + shdr[str_idx].sh_offset; 122501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 123501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 124501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown int dynsymbol_count = 0; 125501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsym_idx != -1) { 126501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Iterate through the dynamic symbol table, and count how many symbols 127501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // are actually defined 128501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (int i = 0; i < dynnumsyms; i++) { 129501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsyms[i].st_shndx != SHN_UNDEF) { 130501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown dynsymbol_count++; 131501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 132501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 133501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 134501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 135501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown size_t symbol_count = 0; 136501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (sym_idx != -1) { 137501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Iterate through the symbol table, and count how many symbols 138501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // are actually defined 139501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (int i = 0; i < numsyms; i++) { 140501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (syms[i].st_shndx != SHN_UNDEF 141501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && str[syms[i].st_name] 142501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && syms[i].st_value 143501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && syms[i].st_size) { 144501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown symbol_count++; 145501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 146501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 147501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 148501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 149501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Now, create an entry in our symbol table structure for each symbol... 150501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->num_symbols += symbol_count + dynsymbol_count; 151501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols = malloc(table->num_symbols * sizeof(symbol_t)); 152501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (!table->symbols) { 153501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown free(table); 154501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table = NULL; 155501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown goto out_unmap; 156501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 157501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 158501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown size_t symbol_index = 0; 159501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsym_idx != -1) { 160501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // ...and populate them 161501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (int i = 0; i < dynnumsyms; i++) { 162501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (dynsyms[i].st_shndx != SHN_UNDEF) { 163501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].name = strdup(dynstr + dynsyms[i].st_name); 164501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].start = dynsyms[i].st_value; 165501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].end = dynsyms[i].st_value + dynsyms[i].st_size; 16619b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown ALOGV(" [%d] '%s' 0x%08x-0x%08x (DYNAMIC)", 16719b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown symbol_index, table->symbols[symbol_index].name, 16819b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown table->symbols[symbol_index].start, table->symbols[symbol_index].end); 169501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown symbol_index += 1; 170501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 171501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 172501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 173501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 174501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (sym_idx != -1) { 175501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // ...and populate them 176501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (int i = 0; i < numsyms; i++) { 177501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (syms[i].st_shndx != SHN_UNDEF 178501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && str[syms[i].st_name] 179501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && syms[i].st_value 180501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown && syms[i].st_size) { 181501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].name = strdup(str + syms[i].st_name); 182501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].start = syms[i].st_value; 183501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown table->symbols[symbol_index].end = syms[i].st_value + syms[i].st_size; 18419b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown ALOGV(" [%d] '%s' 0x%08x-0x%08x", 18519b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown symbol_index, table->symbols[symbol_index].name, 18619b39f371be5250e7b9e88016be1e5e665367b3fJeff Brown table->symbols[symbol_index].start, table->symbols[symbol_index].end); 187501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown symbol_index += 1; 188501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 189501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 190501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 191501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 192501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown // Sort the symbol table entries, so they can be bsearched later 193501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown qsort(table->symbols, table->num_symbols, sizeof(symbol_t), qcompar); 194501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 195501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownout_unmap: 196501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown munmap(base, length); 197501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 198501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownout_close: 199501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown close(fd); 200501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 201501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownout: 202501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return table; 203501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 204501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 205501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownvoid free_symbol_table(symbol_table_t* table) { 206501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (table) { 207501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown for (size_t i = 0; i < table->num_symbols; i++) { 208501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown free(table->symbols[i].name); 209501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 210501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown free(table->symbols); 211501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown free(table); 212501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown } 213501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 214501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown 215501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brownconst symbol_t* find_symbol(const symbol_table_t* table, uintptr_t addr) { 216501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown if (!table) return NULL; 217501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown return (const symbol_t*)bsearch(&addr, table->symbols, table->num_symbols, 218501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown sizeof(symbol_t), bcompar); 219501edd29b823ce1301d2effdd3a9e4b6e2b20b76Jeff Brown} 220