diff options
Diffstat (limited to 'tools/jprof/elf.cpp')
-rw-r--r-- | tools/jprof/elf.cpp | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/tools/jprof/elf.cpp b/tools/jprof/elf.cpp deleted file mode 100644 index 1de1d2dcc..000000000 --- a/tools/jprof/elf.cpp +++ /dev/null @@ -1,133 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "leaky.h" - -#ifdef USE_ELF - -#include "leaky.h" -#include <stdio.h> -#include <malloc.h> -#include <libelf/libelf.h> -#include <unistd.h> -#include <fcntl.h> -#include <string.h> - -void leaky::readSymbols(const char *fileName) -{ - int fd = ::open(fileName, O_RDONLY); - if (fd < 0) { - fprintf(stderr, "%s: unable to open \"%s\"\n", applicationName, - fileName); - exit(-1); - } - - elf_version(EV_CURRENT); - Elf *elf = elf_begin(fd, ELF_C_READ, 0); - if (!elf) { - fprintf(stderr, "%s: \"%s\": has no symbol table\n", applicationName, - fileName); - exit(-1); - } - - long alloced = 10000; - Symbol* syms = (Symbol*) malloc(sizeof(Symbol) * 10000); - Symbol* sp = syms; - Symbol* last = syms + alloced; - - // Get each of the relevant sections and add them to the list of - // symbols. - Elf32_Ehdr *ehdr = elf32_getehdr(elf); - if (!ehdr) { - fprintf(stderr, "%s: elf library lossage\n", applicationName); - exit(-1); - } -#if 0 - Elf32_Half ndx = ehdr->e_shstrndx; -#endif - - Elf_Scn *scn = 0; - int strtabndx = -1; - for (int i = 1; (scn = elf_nextscn(elf, scn)) != 0; i++) { - Elf32_Shdr *shdr = elf32_getshdr(scn); -#if 0 - char *name = elf_strptr(elf, ndx, (size_t) shdr->sh_name); - printf("Section %s (%d 0x%x)\n", name ? name : "(null)", - shdr->sh_type, shdr->sh_type); -#endif - if (shdr->sh_type == SHT_STRTAB) { - /* We assume here that string tables preceed symbol tables... */ - strtabndx = i; - continue; - } -#if 0 - if (shdr->sh_type == SHT_DYNAMIC) { - /* Dynamic */ - Elf_Data *data = elf_getdata(scn, 0); - if (!data || !data->d_size) { - printf("No data..."); - continue; - } - - Elf32_Dyn *dyn = (Elf32_Dyn*) data->d_buf; - Elf32_Dyn *lastdyn = - (Elf32_Dyn*) ((char*) data->d_buf + data->d_size); - for (; dyn < lastdyn; dyn++) { - printf("tag=%d value=0x%x\n", dyn->d_tag, dyn->d_un.d_val); - } - } else -#endif - if ((shdr->sh_type == SHT_SYMTAB) || - (shdr->sh_type == SHT_DYNSYM)) { - /* Symbol table */ - Elf_Data *data = elf_getdata(scn, 0); - if (!data || !data->d_size) { - printf("No data..."); - continue; - } - - /* In theory we now have the symbols... */ - Elf32_Sym *esym = (Elf32_Sym*) data->d_buf; - Elf32_Sym *lastsym = - (Elf32_Sym*) ((char*) data->d_buf + data->d_size); - for (; esym < lastsym; esym++) { -#if 0 - char *nm = elf_strptr(elf, strtabndx, (size_t)esym->st_name); - printf("%20s 0x%08x %02x %02x\n", - nm, esym->st_value, ELF32_ST_BIND(esym->st_info), - ELF32_ST_TYPE(esym->st_info)); -#endif - if ((esym->st_value == 0) || - (ELF32_ST_BIND(esym->st_info) == STB_WEAK) || - (ELF32_ST_BIND(esym->st_info) == STB_NUM) || - (ELF32_ST_TYPE(esym->st_info) != STT_FUNC)) { - continue; - } -#if 1 - char *nm = elf_strptr(elf, strtabndx, (size_t)esym->st_name); -#endif - sp->name = nm ? strdup(nm) : "(no name)"; - sp->address = esym->st_value; - sp++; - if (sp >= last) { - long n = alloced + 10000; - syms = (Symbol*) - realloc(syms, (size_t) (sizeof(Symbol) * n)); - last = syms + n; - sp = syms + alloced; - alloced = n; - } - } - } - } - - int interesting = sp - syms; - if (!quiet) { - printf("Total of %d symbols\n", interesting); - } - usefulSymbols = interesting; - externalSymbols = syms; -} - -#endif /* USE_ELF */ |