diff options
Diffstat (limited to 'nuttx/binfmt/elf.c')
-rw-r--r-- | nuttx/binfmt/elf.c | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/nuttx/binfmt/elf.c b/nuttx/binfmt/elf.c deleted file mode 100644 index 9dc59fbdd..000000000 --- a/nuttx/binfmt/elf.c +++ /dev/null @@ -1,323 +0,0 @@ -/**************************************************************************** - * binfmt/elf.c - * - * Copyright (C) 2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <stdint.h> -#include <string.h> -#include <elf32.h> -#include <debug.h> -#include <errno.h> - -#include <arpa/inet.h> -#include <nuttx/binfmt/binfmt.h> -#include <nuttx/binfmt/elf.h> - -#ifdef CONFIG_ELF - -/**************************************************************************** - * Pre-processor Definitions - ****************************************************************************/ - -/* CONFIG_DEBUG, CONFIG_DEBUG_VERBOSE, and CONFIG_DEBUG_BINFMT have to be - * defined or CONFIG_ELF_DUMPBUFFER does nothing. - */ - -#if !defined(CONFIG_DEBUG_VERBOSE) || !defined (CONFIG_DEBUG_BINFMT) -# undef CONFIG_ELF_DUMPBUFFER -#endif - -#ifndef CONFIG_ELF_STACKSIZE -# define CONFIG_ELF_STACKSIZE 2048 -#endif - -#ifdef CONFIG_ELF_DUMPBUFFER -# define elf_dumpbuffer(m,b,n) bvdbgdumpbuffer(m,b,n) -#else -# define elf_dumpbuffer(m,b,n) -#endif - -#ifndef MIN -# define MIN(a,b) (a < b ? a : b) -#endif - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -static int elf_loadbinary(FAR struct binary_s *binp); -#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT) -static void elf_dumploadinfo(FAR struct elf_loadinfo_s *loadinfo); -#endif - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -static struct binfmt_s g_elfbinfmt = -{ - NULL, /* next */ - elf_loadbinary, /* load */ -}; - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: elf_dumploadinfo - ****************************************************************************/ - -#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_BINFMT) -static void elf_dumploadinfo(FAR struct elf_loadinfo_s *loadinfo) -{ - int i; - - bdbg("LOAD_INFO:\n"); - bdbg(" elfalloc: %08lx\n", (long)loadinfo->elfalloc); - bdbg(" elfsize: %ld\n", (long)loadinfo->elfsize); - bdbg(" filelen: %ld\n", (long)loadinfo->filelen); -#ifdef CONFIG_BINFMT_CONSTRUCTORS - bdbg(" ctoralloc: %08lx\n", (long)loadinfo->ctoralloc); - bdbg(" ctors: %08lx\n", (long)loadinfo->ctors); - bdbg(" nctors: %d\n", loadinfo->nctors); - bdbg(" dtoralloc: %08lx\n", (long)loadinfo->dtoralloc); - bdbg(" dtors: %08lx\n", (long)loadinfo->dtors); - bdbg(" ndtors: %d\n", loadinfo->ndtors); -#endif - bdbg(" filfd: %d\n", loadinfo->filfd); - bdbg(" symtabidx: %d\n", loadinfo->symtabidx); - bdbg(" strtabidx: %d\n", loadinfo->strtabidx); - - bdbg("ELF Header:\n"); - bdbg(" e_ident: %02x %02x %02x %02x\n", - loadinfo->ehdr.e_ident[0], loadinfo->ehdr.e_ident[1], - loadinfo->ehdr.e_ident[2], loadinfo->ehdr.e_ident[3]); - bdbg(" e_type: %04x\n", loadinfo->ehdr.e_type); - bdbg(" e_machine: %04x\n", loadinfo->ehdr.e_machine); - bdbg(" e_version: %08x\n", loadinfo->ehdr.e_version); - bdbg(" e_entry: %08lx\n", (long)loadinfo->ehdr.e_entry); - bdbg(" e_phoff: %d\n", loadinfo->ehdr.e_phoff); - bdbg(" e_shoff: %d\n", loadinfo->ehdr.e_shoff); - bdbg(" e_flags: %08x\n" , loadinfo->ehdr.e_flags); - bdbg(" e_ehsize: %d\n", loadinfo->ehdr.e_ehsize); - bdbg(" e_phentsize: %d\n", loadinfo->ehdr.e_phentsize); - bdbg(" e_phnum: %d\n", loadinfo->ehdr.e_phnum); - bdbg(" e_shentsize: %d\n", loadinfo->ehdr.e_shentsize); - bdbg(" e_shnum: %d\n", loadinfo->ehdr.e_shnum); - bdbg(" e_shstrndx: %d\n", loadinfo->ehdr.e_shstrndx); - - if (loadinfo->shdr && loadinfo->ehdr.e_shnum > 0) - { - for (i = 0; i < loadinfo->ehdr.e_shnum; i++) - { - FAR Elf32_Shdr *shdr = &loadinfo->shdr[i]; - bdbg("Sections %d:\n", i); - bdbg(" sh_name: %08x\n", shdr->sh_name); - bdbg(" sh_type: %08x\n", shdr->sh_type); - bdbg(" sh_flags: %08x\n", shdr->sh_flags); - bdbg(" sh_addr: %08x\n", shdr->sh_addr); - bdbg(" sh_offset: %d\n", shdr->sh_offset); - bdbg(" sh_size: %d\n", shdr->sh_size); - bdbg(" sh_link: %d\n", shdr->sh_link); - bdbg(" sh_info: %d\n", shdr->sh_info); - bdbg(" sh_addralign: %d\n", shdr->sh_addralign); - bdbg(" sh_entsize: %d\n", shdr->sh_entsize); - } - } -} -#else -# define elf_dumploadinfo(i) -#endif - -/**************************************************************************** - * Name: elf_loadbinary - * - * Description: - * Verify that the file is an ELF binary and, if so, load the ELF - * binary into memory - * - ****************************************************************************/ - -static int elf_loadbinary(struct binary_s *binp) -{ - struct elf_loadinfo_s loadinfo; /* Contains globals for libelf */ - int ret; - - bvdbg("Loading file: %s\n", binp->filename); - - /* Initialize the ELF library to load the program binary. */ - - ret = elf_init(binp->filename, &loadinfo); - elf_dumploadinfo(&loadinfo); - if (ret != 0) - { - bdbg("Failed to initialize for load of ELF program: %d\n", ret); - goto errout; - } - - /* Load the program binary */ - - ret = elf_load(&loadinfo); - elf_dumploadinfo(&loadinfo); - if (ret != 0) - { - bdbg("Failed to load ELF program binary: %d\n", ret); - goto errout_with_init; - } - - /* Bind the program to the exported symbol table */ - - ret = elf_bind(&loadinfo, binp->exports, binp->nexports); - if (ret != 0) - { - bdbg("Failed to bind symbols program binary: %d\n", ret); - goto errout_with_load; - } - - /* Return the load information */ - - binp->entrypt = (main_t)(loadinfo.elfalloc + loadinfo.ehdr.e_entry); - binp->stacksize = CONFIG_ELF_STACKSIZE; - - /* Add the ELF allocation to the alloc[] only if there is no address - * enironment. If there is an address environment, it will automatically - * be freed when the function exits - * - * REVISIT: If the module is loaded then unloaded, wouldn't this cause - * a memory leak? - */ - -#ifdef CONFIG_ADDRENV -# warning "REVISIT" -#else - binp->alloc[0] = (FAR void *)loadinfo.elfalloc; -#endif - -#ifdef CONFIG_BINFMT_CONSTRUCTORS - /* Save information about constructors. NOTE: desctructors are not - * yet supported. - */ - - binp->alloc[1] = loadinfo.ctoralloc; - binp->ctors = loadinfo.ctors; - binp->nctors = loadinfo.nctors; - - binp->alloc[2] = loadinfo.dtoralloc; - binp->dtors = loadinfo.dtors; - binp->ndtors = loadinfo.ndtors; -#endif - -#ifdef CONFIG_ADDRENV - /* Save the address environment. This will be needed when the module is - * executed for the up_addrenv_assign() call. - */ - - binp->addrenv = loadinfo.addrenv; -#endif - - elf_dumpbuffer("Entry code", (FAR const uint8_t*)binp->entrypt, - MIN(loadinfo.allocsize - loadinfo.ehdr.e_entry, 512)); - - elf_uninit(&loadinfo); - return OK; - -errout_with_load: - elf_unload(&loadinfo); -errout_with_init: - elf_uninit(&loadinfo); -errout: - return ret; -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: elf_initialize - * - * Description: - * ELF support is built unconditionally. However, it order to - * use this binary format, this function must be called during system - * format in order to register the ELF binary format. - * - * Returned Value: - * This is a NuttX internal function so it follows the convention that - * 0 (OK) is returned on success and a negated errno is returned on - * failure. - * - ****************************************************************************/ - -int elf_initialize(void) -{ - int ret; - - /* Register ourselves as a binfmt loader */ - - bvdbg("Registering ELF\n"); - - ret = register_binfmt(&g_elfbinfmt); - if (ret != 0) - { - bdbg("Failed to register binfmt: %d\n", ret); - } - - return ret; -} - -/**************************************************************************** - * Name: elf_uninitialize - * - * Description: - * Unregister the ELF binary loader - * - * Returned Value: - * None - * - ****************************************************************************/ - -void elf_uninitialize(void) -{ - unregister_binfmt(&g_elfbinfmt); -} - -#endif /* CONFIG_ELF */ - |