diff options
Diffstat (limited to 'qemu/roms/ipxe/src/arch/i386/image/elfboot.c')
-rw-r--r-- | qemu/roms/ipxe/src/arch/i386/image/elfboot.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/qemu/roms/ipxe/src/arch/i386/image/elfboot.c b/qemu/roms/ipxe/src/arch/i386/image/elfboot.c deleted file mode 100644 index dc3568929..000000000 --- a/qemu/roms/ipxe/src/arch/i386/image/elfboot.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <errno.h> -#include <elf.h> -#include <ipxe/image.h> -#include <ipxe/elf.h> -#include <ipxe/features.h> -#include <ipxe/init.h> - -/** - * @file - * - * ELF bootable image - * - */ - -FEATURE ( FEATURE_IMAGE, "ELF", DHCP_EB_FEATURE_ELF, 1 ); - -/** - * Execute ELF image - * - * @v image ELF image - * @ret rc Return status code - */ -static int elfboot_exec ( struct image *image ) { - physaddr_t entry; - physaddr_t max; - int rc; - - /* Load the image using core ELF support */ - if ( ( rc = elf_load ( image, &entry, &max ) ) != 0 ) { - DBGC ( image, "ELF %p could not load: %s\n", - image, strerror ( rc ) ); - return rc; - } - - /* An ELF image has no callback interface, so we need to shut - * down before invoking it. - */ - shutdown_boot(); - - /* Jump to OS with flat physical addressing */ - DBGC ( image, "ELF %p starting execution at %lx\n", image, entry ); - __asm__ __volatile__ ( PHYS_CODE ( "pushl %%ebp\n\t" /* gcc bug */ - "call *%%edi\n\t" - "popl %%ebp\n\t" /* gcc bug */ ) - : : "D" ( entry ) - : "eax", "ebx", "ecx", "edx", "esi", "memory" ); - - DBGC ( image, "ELF %p returned\n", image ); - - /* It isn't safe to continue after calling shutdown() */ - while ( 1 ) {} - - return -ECANCELED; /* -EIMPOSSIBLE, anyone? */ -} - -/** - * Check that ELF segment uses flat physical addressing - * - * @v image ELF file - * @v phdr ELF program header - * @v dest Destination address - * @ret rc Return status code - */ -static int elfboot_check_segment ( struct image *image, Elf_Phdr *phdr, - physaddr_t dest ) { - - /* Check that ELF segment uses flat physical addressing */ - if ( phdr->p_vaddr != dest ) { - DBGC ( image, "ELF %p uses virtual addressing (phys %x, " - "virt %x)\n", image, phdr->p_paddr, phdr->p_vaddr ); - return -ENOEXEC; - } - - return 0; -} - -/** - * Probe ELF image - * - * @v image ELF file - * @ret rc Return status code - */ -static int elfboot_probe ( struct image *image ) { - Elf32_Ehdr ehdr; - static const uint8_t e_ident[] = { - [EI_MAG0] = ELFMAG0, - [EI_MAG1] = ELFMAG1, - [EI_MAG2] = ELFMAG2, - [EI_MAG3] = ELFMAG3, - [EI_CLASS] = ELFCLASS32, - [EI_DATA] = ELFDATA2LSB, - [EI_VERSION] = EV_CURRENT, - }; - physaddr_t entry; - physaddr_t max; - int rc; - - /* Read ELF header */ - copy_from_user ( &ehdr, image->data, 0, sizeof ( ehdr ) ); - if ( memcmp ( ehdr.e_ident, e_ident, sizeof ( e_ident ) ) != 0 ) { - DBGC ( image, "Invalid ELF identifier\n" ); - return -ENOEXEC; - } - - /* Check that this image uses flat physical addressing */ - if ( ( rc = elf_segments ( image, &ehdr, elfboot_check_segment, - &entry, &max ) ) != 0 ) { - DBGC ( image, "Unloadable ELF image\n" ); - return rc; - } - - return 0; -} - -/** ELF image type */ -struct image_type elfboot_image_type __image_type ( PROBE_NORMAL ) = { - .name = "ELF", - .probe = elfboot_probe, - .exec = elfboot_exec, -}; |