diff options
Diffstat (limited to 'qemu/roms/SLOF/lib/libelf/elf.c')
| -rw-r--r-- | qemu/roms/SLOF/lib/libelf/elf.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/qemu/roms/SLOF/lib/libelf/elf.c b/qemu/roms/SLOF/lib/libelf/elf.c deleted file mode 100644 index db2d2abc9..000000000 --- a/qemu/roms/SLOF/lib/libelf/elf.c +++ /dev/null @@ -1,190 +0,0 @@ -/****************************************************************************** - * Copyright (c) 2004, 2011 IBM Corporation - * All rights reserved. - * This program and the accompanying materials - * are made available under the terms of the BSD License - * which accompanies this distribution, and is available at - * http://www.opensource.org/licenses/bsd-license.php - * - * Contributors: - * IBM Corporation - initial implementation - *****************************************************************************/ - -/* - * ELF loader - */ - -#include <string.h> -#include <cache.h> -#include <libelf.h> -#include <byteorder.h> - -/** - * elf_check_file tests if the file at file_addr is - * a correct endian, ELF PPC executable - * @param file_addr pointer to the start of the ELF file - * @return the class (1 for 32 bit, 2 for 64 bit) - * -1 if it is not an ELF file - * -2 if it has the wrong endianness - * -3 if it is not an ELF executable - * -4 if it is not for PPC - */ -static int -elf_check_file(unsigned long *file_addr) -{ - struct ehdr *ehdr = (struct ehdr *) file_addr; - uint8_t native_endian; - - /* check if it is an ELF image at all */ - if (cpu_to_be32(ehdr->ei_ident) != 0x7f454c46) - return -1; - -#ifdef __BIG_ENDIAN__ - native_endian = ELFDATA2MSB; -#else - native_endian = ELFDATA2LSB; -#endif - - if (native_endian != ehdr->ei_data) { - switch (ehdr->ei_class) { - case 1: - elf_byteswap_header32(file_addr); - break; - case 2: - elf_byteswap_header64(file_addr); - break; - } - } - - /* check if it is an ELF executable ... and also - * allow DYN files, since this is specified by ePAPR */ - if (ehdr->e_type != ET_EXEC && ehdr->e_type != ET_DYN) - return -3; - - /* check if it is a PPC ELF executable */ - if (ehdr->e_machine != 0x14 && ehdr->e_machine != 0x15) - return -4; - - return ehdr->ei_class; -} - -/** - * load_elf_file tries to load the ELF file specified in file_addr - * - * it first checks if the file is a PPC ELF executable and then loads - * the segments depending if it is a 64bit or 32 bit ELF file - * - * @param file_addr pointer to the start of the elf file - * @param entry pointer where the ELF loader will store - * the entry point - * @param pre_load handler that is called before copying a segment - * @param post_load handler that is called after copying a segment - * @return 1 for a 32 bit file - * 2 for a 64 bit BE file - * 3 for a 64 bit LE ABIv1 file - * 4 for a 64 bit LE ABIv2 file - * 5 for a 32 bit LE ABIv1 file - * anything else means an error during load - */ -int -elf_load_file(void *file_addr, unsigned long *entry, - int (*pre_load)(void*, long), - void (*post_load)(void*, long)) -{ - int type = elf_check_file(file_addr); - struct ehdr *ehdr = (struct ehdr *) file_addr; - - switch (type) { - case 1: - *entry = elf_load_segments32(file_addr, 0, pre_load, post_load); - if (ehdr->ei_data != ELFDATA2MSB) { - type = 5; /* LE32 ABIv1 */ - } - break; - case 2: - *entry = elf_load_segments64(file_addr, 0, pre_load, post_load); - if (ehdr->ei_data != ELFDATA2MSB) { - uint32_t flags = elf_get_eflags_64(file_addr); - if ((flags & 0x3) == 2) - type = 4; /* LE64 ABIv2 */ - else - type = 3; /* LE64 ABIv1 */ - } - break; - } - if (*entry == 0) - type = 0; - - return type; -} - - -/** - * load_elf_file_to_addr loads an ELF file to given address. - * This is useful for 64-bit vmlinux images that use the virtual entry - * point address in their headers, and thereby need a special treatment. - * - * @param file_addr pointer to the start of the elf file - * @param entry pointer where the ELF loader will store - * the entry point - * @param pre_load handler that is called before copying a segment - * @param post_load handler that is called after copying a segment - * @return 1 for a 32 bit file - * 2 for a 64 bit file - * anything else means an error during load - */ -int -elf_load_file_to_addr(void *file_addr, void *addr, unsigned long *entry, - int (*pre_load)(void*, long), - void (*post_load)(void*, long)) -{ - int type; - long offset; - - type = elf_check_file(file_addr); - - switch (type) { - case 1: - /* Parse 32-bit image */ - offset = (long)addr - elf_get_base_addr32(file_addr); - *entry = elf_load_segments32(file_addr, offset, pre_load, - post_load) + offset; - // TODO: elf_relocate32(...) - break; - case 2: - /* Parse 64-bit image */ - offset = (long)addr - elf_get_base_addr64(file_addr); - *entry = elf_load_segments64(file_addr, offset, pre_load, - post_load) + offset; - elf_relocate64(file_addr, offset); - break; - } - - return type; -} - - -/** - * Get the base load address of the ELF image - * @return The base address or -1 for error - */ -long -elf_get_base_addr(void *file_addr) -{ - int type; - - type = elf_check_file(file_addr); - - switch (type) { - case 1: - /* Return 32-bit image base address */ - return elf_get_base_addr32(file_addr); - break; - case 2: - /* Return 64-bit image base address */ - return elf_get_base_addr64(file_addr); - break; - } - - return -1; -} |